Filed Pursuant to Rule 424(B)(3)
                                                      Registration No. 333-59426


PROSPECTUS

                            POGO PRODUCING COMPANY

                                 $200,000,000

                               Offer to Exchange
              8 1/4% Series B Senior Subordinated Notes Due 2011
    for All Outstanding 8 1/4% Series A Senior Subordinated Notes Due 2011

The new notes

 .    will be freely tradeable and otherwise substantially identical to the
     outstanding notes

 .    will accrue interest from April 10, 2001 at the rate of 8 1/4% per annum,
     payable semi-annually in arrears on each April 15 and October 15, beginning
     October 15, 2001

 .    will be unsecured and will rank equally with the outstanding notes and our
     other unsecured senior subordinated indebtedness

 .    will not be listed on any securities exchange or on any automated dealer
     quotation system

The exchange offer

 .    expires at 5:00 p.m., New York City time, on June 1, 2001, unless
extended


 .    is not conditioned upon any minimum aggregate principal amount of
     outstanding notes being tendered

In addition, you should note that

 .    all outstanding notes that are validly tendered and not validly withdrawn
     will be exchanged for an equal principal amount of new notes that are
     registered under the Securities Act of 1933

 .    tenders of outstanding notes may be withdrawn any time prior to the
     expiration of the exchange offer

 .    the exchange of outstanding notes for new notes in the exchange offer will
     not be a taxable event for U.S. federal income tax purposes

You should consider carefully the risk factors beginning on page 12 of this
prospectus before participating in the exchange offer.

Neither the Securities and Exchange Commission nor any state securities
commission has approved or disapproved of the new notes or determined if this
prospectus is truthful or complete. Any representation to the contrary is a
criminal offense.

                  The date of this Prospectus is May 2, 2001.



                               TABLE OF CONTENTS


                                                                                                                    
About This Prospectus.............................................................................................      3
Forward-Looking Statements........................................................................................      3
Where You Can Find More Information...............................................................................      4
Prospectus Summary................................................................................................      5
Risk Factors......................................................................................................     12
Private Placement.................................................................................................     22
Use of Proceeds...................................................................................................     22
Ratio of Earnings to Fixed Charges................................................................................     22
Capitalization....................................................................................................     23
The Exchange Offer................................................................................................     24
Description of the Notes..........................................................................................     33
Outstanding Notes Registration Rights Agreement...................................................................     74
Book Entry; Delivery and Form.....................................................................................     75
Certain Federal Income Tax Consequences...........................................................................     77
Plan of Distribution..............................................................................................     77
Transfer Restrictions on Outstanding Notes........................................................................     78
Legal Matters.....................................................................................................     78
Experts...........................................................................................................     78
Independent Petroleum Engineers...................................................................................     79


                                       2



                             About This Prospectus

     This prospectus is part of a registration statement we filed with the
Securities and Exchange Commission. We are submitting this prospectus to holders
of outstanding notes so that they can consider exchanging their outstanding
notes for new notes. You should rely only on the information contained or
incorporated by reference in this prospectus. We have not authorized any person
to provide you with additional or different information. We are not making an
offer of these securities in any jurisdiction where the offer is not permitted.
You should assume that the information in this prospectus is accurate only as of
the date on the front cover of this prospectus and that any information that we
have incorporated by reference is accurate only as of the date of the document
incorporated by reference.

                          Forward-Looking Statements

     Certain of the statements contained or incorporated by reference in this
prospectus are forward-looking statements within the meaning of Section 27A of
the Securities Act of 1933, as amended, and Section 21E of the Securities
Exchange Act of 1934, as amended. If a statement is not a statement of
historical fact then it is a forward-looking statement. You can identify a
forward-looking statement by our use of the words "anticipate," "estimate,"
"expect," "may," "believe," "objective," "projection," "forecast," "goal," and
similar expressions. These forward-looking statements include our statements
regarding the timing of future events, the anticipated future operations of Pogo
Producing Company ("Pogo" or "the Company") and our subsidiaries and Pogo's
anticipated future financial position and cash requirements. Although we believe
that the expectations reflected in our forward-looking statements are
reasonable, we do not know whether our expectations will prove correct. We
disclose the important factors that could cause Pogo's actual results to differ
materially from our expectations in cautionary statements made in this
prospectus and in other filings by Pogo with the Securities and Exchange
Commission. All subsequent written and oral forward-looking statements
attributable to Pogo or persons acting on our behalf are expressly qualified in
their entirety by these cautionary statements. Pogo's actual results could
differ materially from those anticipated in these forward-looking statements as
a result of the risk factors set forth below and other factors set forth in or
incorporated by reference in this prospectus. These factors include:

     .   the cyclical nature of the oil and natural gas industries
     .   our ability to successfully and profitably find and produce oil and gas
     .   expenses related to results of the recent merger of NORIC Corporation
         into Pogo, including the integration of its subsidiary, North Central
         Oil Corporation, into Pogo's operations
     .   uncertainties associated with the United States and worldwide economies
     .   current and potential governmental regulatory actions in countries
         where Pogo owns an interest
     .   substantial competition from larger companies
     .   Pogo's ability to implement cost reductions
     .   operating interruptions (including leaks, explosions, fires, mechanical
         failure, unscheduled downtime, transportation interruptions, and spills
         and releases and other environmental risks)
     .   fluctuations in foreign currency exchange rates in areas of the world
         where Pogo owns an interest, particularly Southeast Asia, and
     .   covenant restrictions in Pogo's indebtedness.

Many of those factors are beyond Pogo's ability to control or predict. We
caution you not to put undue reliance on forward-looking statements or to
project any future results based on such statements or on present or prior
earnings levels.

     All subsequent written and oral forward-looking statements attributable to
Pogo and persons acting on our behalf are qualified in their entirety by the
cautionary statements contained in this section and elsewhere in this
prospectus.

                                       3


                      Where You Can Find More Information

     We file annual, quarterly and special reports, proxy statements and other
information with the Securities and Exchange Commission (the "SEC"). Our SEC
filings are available to the public over the Internet at the SEC's web site at
http://www.sec.gov. You may also read and copy any document we file with the SEC
at its public reference facilities at 450 Fifth Street, N.W., Washington, D.C.
20549. You can also obtain copies of the documents at prescribed rates by
writing to the Public Reference Section of the SEC at 450 Fifth Street, N.W.,
Washington, D.C. 20549. Please call the SEC at 1-800-SEC-0330 for further
information on the operation of the public reference facilities. You can also
obtain information about us at the offices of the New York Stock Exchange, 20
Broad Street, New York, New York 10005.

     We "incorporate by reference" into this prospectus the information we file
with the SEC, which means that we can disclose important information to you by
referring you to those documents. The information we incorporate by reference is
considered to be part of this prospectus, unless we update or supersede that
information by the information contained in this prospectus or information we
file subsequently that is incorporated by reference into this prospectus. We are
incorporating by reference into this prospectus the following documents that we
have filed with the SEC, and our future filings with the SEC under Sections
13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934 until the
offering of the new notes is completed:

     .   Our annual report on Form 10-K for the year ended December 31, 2000
         (the "Annual Report")
     .   Our current report on Form 8-K filed on March 26, 2001
     .   Our definitive proxy statement filed on April 2, 2001
     .   Our current report on Form 8-K filed on April 6, 2001
     .   Our current report on Form 8-K filed on April 25, 2001

     You should rely only on the information incorporated by reference or set
forth in this prospectus. We have not authorized anyone else to provide you with
different information. You should not assume that the information in this
prospectus is accurate as of any date other than the date on the front of this
prospectus.

This prospectus is part of a registration statement we have filed with the SEC
relating to the new notes. As permitted by SEC rules, this prospectus does not
contain all of the information included in the registration statement and the
accompanying exhibits and schedules we file with the SEC. You should read the
registration statement and the exhibits and schedules for more information about
us and the new notes. The registration statement, exhibits and schedules are
also available at the SEC's Public Reference Room or through its Internet site.

     You may request a copy of these filings at no cost by writing to or
telephoning us at the following address:

               Pogo Producing Company
               Investor Relations
               5 Greenway Plaza, Suite 2700
               Houston, Texas 77046-0504
               Telephone:  (713) 297-5000
               Facsimile:  (713) 297-5100

                                       4


                              Prospectus Summary

     This summary highlights selected information from this prospectus to help
you understand the terms of this exchange offer and the new notes. It likely
does not contain all the information that is important to you or that you should
consider in making a decision to exchange your outstanding notes for new notes.
To understand all of the terms of this exchange offer and the new notes and to
attain a more complete understanding of our business and financial situation,
you should carefully read this entire prospectus and the information we have
incorporated by reference herein. The terms "the Company", "we", "our", "ours"
and "us" as used in this prospectus refer to "Pogo Producing Company" and its
subsidiaries and predecessors as a combined entity.

     You should carefully consider the information set forth under the heading
"Risk Factors." This prospectus contains certain forward-looking statements
which involve risks and uncertainties. Our actual results may differ
significantly from the results discussed in the forward-looking statements. See
"Forward-Looking Statements."

     The term "outstanding notes" refers to the 8 1/4% Series A Senior
Subordinated Notes due 2011 that were issued April 10, 2001. The term "new
notes" refers to the 8 1/4% Series B Senior Subordinated Notes due 2011 issuable
in the exchange offer. The term "notes" refers to the outstanding notes and the
new notes collectively.

                         About Pogo Producing Company

     Pogo Producing Company is an independent oil and gas exploration and
production company based in Houston, Texas. Incorporated in 1970, we have, in
recent years, established a record of increasing our proven hydrocarbon
reserves, principally through exploration, exploitation and development of our
properties and the selective acquisition of additional interests in producing
properties in which we already have an interest. Through a portfolio of domestic
and international properties, we concentrate our efforts on a mix of both
offshore and onshore opportunities which provide a balanced exposure to oil and
natural gas production. In recent years, we have concentrated our efforts in
selected areas where we believe that our expertise, competitive acreage
position, or ability to quickly take advantage of new opportunities offer the
possibility of relatively high rates of return. Domestically, we have an
extensive Gulf of Mexico reserve and acreage position and we are also active in
the Permian Basin of Southeast New Mexico and West Texas and in other areas of
Texas and Louisiana. Internationally, through our subsidiary Thaipo Limited, we
own an interest in the Block B8/32 concession license in the Gulf of Thailand.
We also own interests in Canada, Hungary, and in the United Kingdom and Danish
sectors of the North Sea. On March 14, 2001, we acquired North Central Oil
Corporation for cash and stock through a merger of its parent company, NORIC
Corporation, with and into Pogo. North Central's properties are concentrated in
four core areas: South Texas, the Rocky Mountains, South Louisiana and the Texas
Gulf Coast.

     You should consider carefully the information under the caption "Risk
Factors."

     Our principal executive offices are located at the following address:

                    Pogo Producing Company
                    5 Greenway Plaza, Suite 2700
                    Houston, Texas 77046
                    (713) 297-5000 (telephone)
                    (713) 297-5100 (facsimile)

     Additional information concerning Pogo and our subsidiaries, including
North Central, is included in our reports and other documents incorporated by
reference in this prospectus. See "Where You Can Find More Information."

                                       5


                          Summary of the Exchange Offer

     On April 10, 2001, we completed the private offering of the outstanding
notes. We received proceeds, before deducting the discount to the initial
purchaser, of $200,000,000 from the sale of the outstanding notes.

     We entered into a registration rights agreement with the initial purchaser
in the private offering in which we agreed to deliver to you this prospectus and
to complete the exchange offer within 180 days after the date we issued the
outstanding notes. In the exchange offer, you are entitled to exchange your
outstanding notes for new notes that are registered with the SEC but otherwise
contain substantially identical terms.

     You should read the discussion under the headings "--Summary of the Terms
of the New Notes" beginning on page 9 and "Description of the Notes" beginning
on page 33 for further information regarding the new notes. After this exchange
offer expires, you will no longer be entitled to any exchange or registration
rights for your outstanding notes.

     We summarize the terms of the exchange offer below. You should read the
discussion under the headings "The Exchange Offer" beginning on page 24 for
further information regarding the exchange offer and resale of the new notes.

The Exchange Offer......................    We are offering to exchange up to
                                            $200 million aggregate principal
                                            amount of new notes for up to $200
                                            million aggregate principal amount
                                            of the outstanding notes.
                                            Outstanding notes may be exchanged
                                            only in integral multiples of
                                            $1,000.

                                            Outstanding notes that are not
                                            tendered for exchange will continue
                                            to be subject to transfer
                                            restrictions and will not have
                                            registration rights. Therefore, the
                                            market for secondary resales of
                                            outstanding notes that are not
                                            tendered for exchange is likely to
                                            be minimal.

Expiration Date.........................    The Exchange Offer will expire at
                                            5:00 p.m., New York City time, on
                                            June 1, 2001, or such later date
                                            and time to which we extend it.

Withdrawal of Tenders...................    You may withdraw your tender of
                                            outstanding notes at any time prior
                                            to the expiration date, unless
                                            previously accepted for exchange. We
                                            will return to you, without charge,
                                            promptly after the expiration or
                                            termination of the exchange offer
                                            any outstanding notes that you
                                            tendered but that were not accepted
                                            for exchange.

Conditions to the Exchange Offer........    We will not be required to accept
                                            outstanding notes for exchange if
                                            the exchange offer would be unlawful
                                            or would violate any interpretation
                                            of the staff of the SEC. The
                                            exchange offer is not conditioned
                                            upon any minimum aggregate principal
                                            amount of outstanding notes being
                                            tendered. Please read the section
                                            "The Exchange Offer--Conditions to
                                            the Exchange Offer" beginning on
                                            page 26 for more information
                                            regarding the conditions to the
                                            exchange offer.

Procedures for Tendering
  Outstanding Notes....................     If your outstanding notes are held
                                            through The Depository Trust Company
                                            and you wish to participate in the
                                            exchange offer, you may do so
                                            through the automated tender offer
                                            program of The Depository Trust
                                            Company. If you tender under this
                                            program, you will agree to be bound
                                            by the letter of transmittal that we
                                            are providing with this prospectus
                                            as though you had signed the letter
                                            of transmittal. By signing or
                                            agreeing to be bound by the letter
                                            of transmittal, you will represent
                                            to us that, among other things:

                                       6


                                               .   any new notes that you
                                                   receive will be acquired in
                                                   the ordinary course of your
                                                   business

                                               .   you have no arrangement or
                                                   understanding with any person
                                                   or entity to participate in
                                                   the distribution of the new
                                                   notes

                                                .  if you are not a broker-
                                                   dealer, you are not engaged
                                                   in and do not intend to
                                                   engage in the distribution of
                                                   the new notes


                                                .  if you are a broker-dealer
                                                   that will receive new notes
                                                   for your own account in
                                                   exchange for outstanding
                                                   notes that were acquired as a
                                                   result of market-making or
                                                   other trading activities, you
                                                   will deliver a prospectus, as
                                                   required by law, in
                                                   connection with any resale of
                                                   such new notes


                                                .  you are not our "affiliate,"
                                                   as defined in Rule 405 of the
                                                   Securities Act of 1933, or,
                                                   if you are our affiliate, you
                                                   will comply with any
                                                   applicable registration and
                                                   prospectus delivery
                                                   requirements of the
                                                   Securities Act of 1933
Special Procedures for
  Beneficial Owners....................     If you own a beneficial interest in
                                            outstanding notes that are
                                            registered in the name of a broker,
                                            dealer, commercial bank, trust
                                            company or other nominee, and you
                                            wish to tender the outstanding notes
                                            in the exchange offer, you should
                                            contact the registered holder
                                            promptly and instruct the registered
                                            holder to tender on your behalf.

Guaranteed Delivery Procedures..........    If you wish to tender your
                                            outstanding notes and cannot comply,
                                            prior to the expiration date, with
                                            the applicable procedures under the
                                            automated tender program of The
                                            Depository Trust Company, you must
                                            tender your outstanding notes
                                            according to the guaranteed delivery
                                            procedures described in "The
                                            Exchange Offer--Guaranteed Delivery
                                            Procedures" beginning on page 30.

Certain U.S. Federal Income
  Tax Considerations....................    The exchange of outstanding notes
                                            for new notes in the exchange offer
                                            will not be a taxable event for U.S.
                                            federal income tax purposes. Please
                                            read "Certain Federal Income Tax
                                            Consequences" beginning on page 77.

Use of Proceeds.........................    We will not receive any cash
                                            proceeds from the issuance of new
                                            notes.

                                       7


                              The Exchange Agent

     We have appointed Wells Fargo Bank Minnesota, National Association as
exchange agent for the exchange offer. You should direct questions and requests
for assistance, requests for additional copies of this prospectus or of the
letter of transmittal and requests for the notice of guaranteed delivery to the
exchange agent addressed as follows:



           For Delivery by Mail, Overnight Delivery Only or by Hand:

               Wells Fargo Bank Minnesota, National Association
                           Corporate Trust Services
                          213 Court Street, Suite 902
                             Middletown, CT 06457
                       Attention: Mr. Robert L. Reynolds


         For Facsimile Transmission (for eligible institutions only):

                                (860) 704-6219

                              To Confirm Receipt:

                                (860) 704-6216

                                       8


                       Summary of Terms of the New Notes

     The new notes will be freely tradeable and otherwise substantially
identical to the outstanding notes. The new notes will not have registration
rights or provisions for additional interest. The new notes will evidence the
same debt as the outstanding notes, and the outstanding notes are and the new
notes will be governed by the same indenture. The outstanding notes and the new
notes will vote together as a single separate class under the indenture.


Notes Offered..........................   $200,000,000 aggregate principal
                                          amount of 8 1/4% Series B Senior
                                          Subordinated Notes due 2011.


Maturity Date..........................   April 15, 2011.


Interest Payment Dates.................   Interest on the new notes will be
                                          payable semi-annually in arrears on
                                          April 15 and October 15 of each year,
                                          commencing October 15, 2001.


Optional Redemption....................   We may redeem any or all of the new
                                          notes at any time on or after April
                                          15, 2004. We will pay a redemption
                                          price equal to the principal amount of
                                          the notes we redeem plus a make-whole
                                          premium, which is described under
                                          "Description of the Notes--Redemption;
                                          Optional Redemption" on page 34. We
                                          will also pay accrued and unpaid
                                          interest.

Possible Subsidiary
Guarantees.............................   None of our subsidiaries will
                                          guarantee the new notes initially. If
                                          our existing or future restricted
                                          subsidiaries guarantee any of our
                                          other indebtedness, however, they will
                                          be required by the indenture governing
                                          the new notes to jointly and severally
                                          guarantee the new notes on a senior
                                          subordinated basis. We do not intend
                                          to cause any subsidiary to take any
                                          action that would require it to
                                          guarantee the new notes. Any
                                          subsidiary guarantees of the new notes
                                          that may be issued will be limited to
                                          the extent of any payment that would
                                          not constitute a fraudulent transfer
                                          or conveyance under federal or state
                                          law. See "Risk Factors-- Any
                                          subsidiary guarantees of the notes may
                                          be subordinated or avoided by a court"
                                          on page 21 and "Description of the
                                          Notes--Possible Subsidiary Guarantees
                                          of the Notes" beginning on page 36.

Change of Control......................   Upon certain change of control events,
                                          each holder of notes may require us to
                                          purchase all or a portion of its notes
                                          at a purchase price equal to 101% of
                                          the principal amount of those notes,
                                          together with accrued and unpaid
                                          interest, if any, to the date of
                                          purchase. See "Description of the
                                          Notes-- Certain Covenants; Change of
                                          Control" beginning on page 42.

                                       9


Ranking................................   The new notes will be our general
                                          unsecured senior subordinated
                                          obligations. They will be subordinated
                                          in right of payment to all our
                                          existing and future Senior
                                          Indebtedness. The new notes will rank
                                          equally with all our existing and
                                          future senior subordinated
                                          indebtedness and senior in right of
                                          payment to all our existing and future
                                          Subordinated Indebtedness. After
                                          application of the proceeds from the
                                          sale of our outstanding notes, on
                                          April 10, 2001, we had $141,000,000
                                          principal amount of outstanding senior
                                          indebtedness, $250,000,000 of
                                          indebtedness that would be of equal
                                          rank with the new notes and
                                          $265,000,000 of indebtedness and
                                          preferred securities of a subsidiary
                                          trust that would be subordinated in
                                          right of payment to the new notes. The
                                          terms "Senior Indebtedness" and
                                          "Subordinated Indebtedness" are
                                          defined with respect to the notes in
                                          "Description of the Notes-- Certain
                                          Definitions" which begins on page 53.
                                          Subject to limitations in the
                                          indenture governing the notes, we and
                                          our subsidiaries may incur additional
                                          indebtedness. See "Capitalization" on
                                          page 23 and "Description of the Notes
                                          -Subordination" which begins on page
                                          34.


Certain Covenants......................   The indenture governing the
                                          outstanding notes and the new notes
                                          contains covenants that, among other
                                          things, limit our ability, and the
                                          ability of our restricted subsidiaries
                                          to:

                                               .   incur additional indebtedness
                                               .   make certain investments
                                               .   pay dividends on, redeem or
                                                   repurchase our capital stock
                                               .   issue and sell our restricted
                                                   subsidiaries' capital stock
                                               .   engage in transactions with
                                                   affiliates
                                               .   create certain liens
                                               .   dispose of asset sales
                                                   proceeds
                                               .   guarantee indebtedness
                                               .   incur senior subordinated
                                                   indebtedness that does not
                                                   rank equal to the notes
                                               .   merge, consolidate and sell
                                                   assets

                                                   These covenants have various
                                                   exceptions and
                                                   qualifications, which are
                                                   described under "Description
                                                   of the Notes-- Certain
                                                   Covenants" which begins on
                                                   page 37.

Suspension of Covenants................   If the notes become rated investment
                                          grade in the future, then many of the
                                          foregoing covenants will be suspended
                                          for as long as investment grade
                                          ratings are maintained. See
                                          "Description of the Notes - Certain
                                          Covenants; Suspension of Certain
                                          Covenants When Notes are Rated
                                          Investment Grade" on page 46.


Right under Registration
Rights Agreement.......................   If we fail to complete the exchange
                                          offer as required by the registration
                                          rights agreement, we will be obligated
                                          to pay additional interest to holders
                                          of the outstanding notes.

                                          Please read "Outstanding Notes
                                          Registration Rights Agreement"
                                          beginning on page 74 for more
                                          information regarding your rights as a
                                          holder of outstanding notes.


                                      10


--------------------------------------------------------------------------------


     Absence of a Public Market
     for the Notes........................   The new notes will be a new issue
                                             of securities for which there is
                                             currently no market. Although the
                                             initial purchaser of the
                                             outstanding notes has informed us
                                             that it currently intends to make a
                                             market in the new notes issued in
                                             the exchange offer, it is not
                                             obligated to do so. Any such market
                                             making may be discontinued at any
                                             time without notice. Accordingly,
                                             we cannot assure you as to the
                                             development or liquidity of any
                                             market for the notes.


     Risk Factors.........................   You should consider carefully the
                                             risks described in "Risk Factors,"
                                             beginning on page 12.

--------------------------------------------------------------------------------

                                       11


                                 Risk Factors

     Your investment in the notes involves risks. You should carefully consider
the following Risk Factors before deciding whether this investment is suitable
for you.

Natural gas and oil prices fluctuate widely, and low prices could have a
material adverse impact on our business.

     Our revenues, profitability and future growth depend substantially on
prevailing prices for natural gas and oil. Oil and natural gas market prices
have historically been seasonal, cyclical and volatile. The average prices that
we currently receive for our production are higher than their historic average.
A future drop in oil and gas prices, such as the decline that occurred in 1998,
could have a material adverse effect on our cash flow and profitability. A
sustained period of low prices could have a material adverse effect on our
operations and financial condition. This could also result in a reduction in
funds available under our bank credit agreement. Lower prices may also reduce
the amount of natural gas and oil that we can economically produce.

     Among the factors that can cause oil and gas price fluctuation are:

     .    the level of consumer product demand;

     .    weather conditions;

     .    domestic and foreign governmental regulations;

     .    the price and availability of alternative fuels;

     .    political conditions in natural gas and oil producing regions;

     .    the domestic and foreign supply of natural gas and oil;

     .    the price of foreign imports; and

     .    overall economic conditions.

The natural gas and oil business involves many operating risks that can cause
substantial losses or hinder marketing efforts.

     Numerous risks affect our drilling activities, including the risk of
drilling non-productive wells or dry holes. The cost of drilling, completing and
operating wells and of installing production facilities and pipelines is often
uncertain. Also, our drilling operations could diminish or cease because of any
of the following:

     .    title problems;

     .    weather conditions;

     .    fires;

     .    explosions;

     .    blow-outs and surface cratering;

     .    uncontrollable flows of underground natural gas, oil and formation
          water;

     .    natural disasters;

     .    pipe or cement failures;

                                       12


     .    casing collapses;

     .    embedded oilfield drilling and service tools;

     .    abnormally pressured formations;

     .    environmental hazards such as natural gas leaks, oil spills, pipeline
          ruptures and discharges of toxic gases;

     .    noncompliance with governmental requirements; or

     .    shortages or delays in the delivery or availability of equipment or
          fabrication yards.


     Offshore operations are also subject to a variety of operating risks
peculiar to the marine environment, such as capsizing, collisions and damage or
loss from hurricanes or other adverse weather conditions. These conditions can
cause substantial damage to facilities and interrupt production. As a result, we
could incur substantial liabilities that could reduce or eliminate the funds
available for exploration, development or leasehold acquisitions, or result in
loss of equipment and properties.

     Moreover, effective marketing of our natural gas production depends on a
number of factors, such as the following:

     .    existing market supply of and demand for natural gas;

     .    the proximity of our reserves to pipelines;

     .    the available capacity of such pipelines; and

     .    government regulations.

     The marketing of oil and gas production similarly depends on the
availability of pipelines and other transportation, processing and refining
facilities, and the existence of adequate markets. As a result, even if
hydrocarbons are discovered in commercial quantities, a substantial period of
time may elapse before commercial production commences. If pipeline facilities
in an area are insufficient, we may have to wait for the construction or
expansion of pipeline capacity before we can market production from that area.

We may not be able to obtain sufficient drilling equipment and experienced
personnel to conduct our operations.

     The recent increase in drilling activity throughout the world has increased
the demand for drilling rigs, drilling vessels, supply boats and personnel
experienced in the oil and gas industry in general, and the offshore oil and gas
industry in particular. Recently we have experienced difficulty and delays in
consistently obtaining services and equipment from vendors, obtaining drilling
rigs and other equipment at favorable rates, and scheduling equipment
fabrication at factories and fabrication yards. In addition, the costs of such
services, equipment and personnel have recently risen significantly. No
assurance can be given that such services, equipment and personnel will be
available in a timely manner, or that operational costs will not increase
significantly.

Our foreign operations subject us to additional risks.

     Our ownership and operations in Thailand, Hungary, the North Sea, Canada,
and any other foreign areas where we do business are subject to the various
risks inherent in foreign operations. These risks may include the following:

     .    currency restrictions and exchange rate fluctuations;

     .    loss of revenue, property and equipment due to expropriation,
          nationalization, war, insurrection and other political risks;

                                       13


     .    risks of increases in taxes and governmental royalties, renegotiation
          of contracts with governmental entities, and quasi-governmental
          agencies;

     .    changes in laws and policies governing operations of foreign-based
          companies; and

     .    other uncertainties arising out of foreign government sovereignty, and
          inability to fund foreign operations from the United States.

United States laws and policies on foreign trade, taxation and investment may
also adversely affect international operations. In addition, if a dispute arises
from foreign operations, foreign courts may have exclusive jurisdiction over the
dispute, or we may not be able to subject foreign persons to the jurisdiction of
United States courts. We seek to manage these risks by concentrating our
international operations in areas where we believe that the existing government
is stable and favorably disposed towards United States oil and gas companies.

Our recent acquisition of North Central Oil Corporation may not be successful.

     In March 2001, we completed the acquisition of North Central Oil
Corporation through the merger of its parent company, NORIC Corporation, with
and into Pogo. In connection with the merger, Pogo paid former shareholders of
NORIC Corporation (the parent company of North Central) $344,710,000 in cash and
issued them 12,615,816 shares of Pogo common stock. We also repaid all
$78,600,000 of North Central's bank debt. At April 10, 2001, following
application of the net proceeds from the sale of the outstanding notes, we had
$141,000,000 in bank debt. As set forth below, the acquisition may have the
following negative effects on Pogo: a decline in share price resulting from the
issuance of shares in the merger; unexpected difficulties in integrating the
operations of North Central; and a substantial potential tax liability in
connection with the acquisition.

     Effect of new shares issued. As a result of the acquisition, the number of
outstanding Pogo common shares increased by approximately 31%. The effect of
this increase may be additional volatility in the market price of Pogo common
stock, or a decline in the price regardless of the financial performance of
Pogo. In addition, beginning on September 15, 2001, the former NORIC
stockholders will have the right to sell the shares of Pogo common stock that
they acquired in the merger, subject to the terms of a registration rights
agreement. Heavy selling of Pogo shares by the former NORIC stockholders, or the
anticipation that heavy selling may occur, could depress the market price of
Pogo common stock.

     Difficulties in integrating the operations of North Central. Until March
14, 2001, North Central and Pogo operated separately. Pogo's management team
does not have experience with North Central's operations. Pogo may not be able
to integrate the operations of North Central without a loss of key employees,
agents, joint venturers, customers or suppliers, a loss of revenues, an increase
in operating or other costs or other difficulties. In addition, Pogo may not be
able to realize any of the operating efficiencies, synergies or other benefits
expected from the merger. Any costs or delays incurred in connection with
integrating the operations of North Central could have an adverse effect on
Pogo's business, results of operations or financial condition. The combined
company may experience the difficulties associated with being a larger entity,
including increased difficulties of coordination, difficulties relating to
increased size and scale, difficulties in accessing the capital markets to
obtain permanent financing. In addition, Pogo lacks recent experience in
exploring for oil and gas in the Rocky Mountain region.

     We could face a substantial tax liability from the merger. We received a
legal opinion, based on representations from the companies about the
consideration paid, that neither Pogo nor NORIC will recognize taxable gain or
loss as a result of the merger. However, this opinion will not be binding on the
Internal Revenue Service or on a court and either of them could reach a contrary
conclusion, resulting in taxable gain to NORIC and a substantial tax liability
for us.

We cannot control the activities on properties we do not operate; operators of
those properties may act in ways that are not in our best interests.

     Other companies operate a significant percentage of the oil and gas
properties in which we have an interest. As a result, we have limited influence
over operations on some of those properties or their associated costs. Our
limited influence on non-operated properties could result in the following:

                                       14


     .    the operator may initiate exploration or development projects on a
          different schedule than we prefer;

     .    the operator may propose to drill more wells or build more facilities
          on a project than we have funds for, which may mean that we cannot
          participate in those projects or share in a substantial share of the
          revenues from those projects; and

     .    if the operator refuses to initiate an exploration or development
          project, we may not be able to pursue the project.

Any of these events could significantly affect our anticipated exploration and
development activities and the economic value of those properties to us.

If our partners have liquidity and cash flow problems, we may have difficulty
financing and developing our projects.

     If oil and gas prices were to decline significantly, some of our partners,
particularly the smaller ones, may undergo liquidity and cash flow problems.
These problems may lead to their attempting to delay or slow down the pace of
drilling or project development to a point that we believe is detrimental to the
project. In most cases, we have the ability to influence the pace of capital
expenditures and field development through our joint operating agreements. In
addition, some partners may be unwilling or unable to pay their share of the
costs of projects as they become due. At worst, a partner may declare bankruptcy
and refuse or be unable to pay its share of the costs of a project. We could
then be required to pay that partner's share of the project costs.

Maintaining reserves and revenues in the future depends on successful
exploration and development.

     We must continually acquire or explore for and develop new oil and natural
gas reserves to replace those produced and sold. Our hydrocarbon reserves and
revenues will decline if we are not successful in our drilling, acquisition or
exploration activities. Although we have historically maintained our reserves
base primarily through successful exploration and development operations, we
cannot assure you that our future efforts will be similarly successful.

Our offshore and onshore operations are subject to casualty risks against which
we cannot fully insure.

     Our operations are subject to inherent casualty risks such as blowouts,
fires, explosions and marine hazards. If any such event occurred, we could be
subject to substantial financial losses due to personal injury, property damage,
environmental discharge, or suspension of operations. Because we are a
relatively small oil and gas company, the impact on us of one of these events
could be significant. Although we purchase customary insurance, we are not fully
insured against all risks incident to our business. For some risks, we may not
obtain insurance if we believe the cost of available insurance is excessive
relative to the risks presented. In addition, pollution and environmental risks
generally are not fully insurable. If a significant accident or other event
occurs and is not fully covered by insurance, it could adversely affect our
operations.

We have substantial capital requirements.

     We require substantial capital to replace our reserves and generate
sufficient cash flow to meet our financial obligations. If we cannot generate
sufficient cash flow from operations or raise funds externally in the amounts
and at the times needed, we may not be able to replace our reserves or meet our
financial obligations. Our ongoing capital requirements consist primarily of the
following items:

     .    funding our 2001 capital and exploration budget;

     .    other allocations for acquisition, development, production,
          exploration and abandonment of oil and gas reserves; and

     .    future dividend payments.

                                       15


Our 2001 capital and exploration budget as established by our board of directors
is currently $275 million (excluding purchased reserves and interest
capitalized) and does not reflect any increase relating to the acquisition of
North Central properties.

     We plan to finance anticipated ongoing expenses and capital requirements
with funds generated from the following sources:

     .    available cash and cash investments;

     .    cash provided by operating activities;

     .    funds available under our new bank credit agreement entered into in
          connection with the NORIC merger;

     .    our uncommitted bank line of credit and banker's acceptances;

     .    capital we believe we can raise through debt and equity offerings; and

     .    asset sales.

     We believe the funds provided by these sources will be sufficient to meet
the remainder of our 2001 cash requirements. However, the uncertainties and
risks associated with future performance and revenues, as described in these
Risk Factors, will ultimately determine our liquidity and ability to meet our
anticipated capital requirements.

We may not be able to profitably market and sell all of the production from our
concession in Thailand.

     We may not be able to successfully and profitably process, transport and
market all the oil and gas we find and produce on our concession in the Gulf of
Thailand. Currently, the only buyer for the natural gas we produce is the
Petroleum Authority of Thailand, which maintains a monopoly over gas
transmission and distribution in Thailand. Our current gas contract with the
Petroleum Authority limits us to delivering approximately 145 million cubic feet
of gas per day. Due to an abundance of natural gas under contract to the
Petroleum Authority, the Petroleum Authority has generally not taken
significantly more than its contractual minimum. In addition, because much of
the oil we produce from our Thailand concession is associated with natural gas,
limits on natural gas production could also limit our ability to produce oil
from our Thailand concession.

Our gas sales agreement in Thailand requires us to sell a portion of our
Thailand production at a reduced price if we do not meet our minimum delivery
requirements.

     We are currently receiving the full contract price on our current
production in Thailand. However, if we and our partners fail to deliver the
minimum quantities under the gas sales agreement, the Petroleum Authority has
the right to reduce the purchase price on an equivalent amount of subsequent
deliveries to 75% of the contract price.

Economic conditions in Southeast Asia can hurt our cash flow.

     During 1997 and 1998, Southeast Asia in general, and the Kingdom of
Thailand in particular, experienced severe economic difficulties. These problems
included sharply reduced economic activity, illiquidity, highly volatile foreign
currency exchange rates and unstable stock markets. Although Southeast Asian
markets have recovered somewhat, they remain below their recent historic highs.
Economic difficulties in Thailand and the volatility of the Thai Baht,
Thailand's currency, against the U.S. dollar will continue to have a material
impact on our Thailand operations and the prices we receive for our oil and gas
production there.

You should not place undue reliance on our reserve data because they are
estimates.

     No one can measure underground accumulations of oil and gas in an exact
way. Projecting future production rates and the timing of development
expenditures is also an uncertain process. Accuracy of reserve estimates depends
on the quality of available data and on economic, engineering and geological
interpretation and judgment. As a result, our reserve estimates often differ
from the quantities of oil and gas we ultimately recover. To estimate
economically recoverable reserves, we make various assumptions regarding future
oil and gas prices, production

                                       16


levels, and operating and development costs that may prove incorrect. Any
significant variance from those assumptions could greatly affect our estimates
of economically recoverable reserves and future net revenues.

     You should not assume that the present value of future net cash flows from
our proved reserves included or incorporated by reference in this prospectus is
the current value of our estimated natural gas and oil reserves. In accordance
with Securities and Exchange Commission requirements, we base the estimated
discounted future net cash flows from our proved reserves on prices and costs on
the date of the estimate. Actual future prices and costs may differ materially
from those used in the net present value estimate.

We face significant competition, and we are smaller than many of our
competitors.

     The oil and gas industry is highly competitive. We compete with major and
independent natural gas and oil companies for property acquisitions. We also
compete for the equipment and labor required to operate and development
properties. Many of our competitors have substantially greater financial and
other resources than we do. As a result, those competitors may be better able to
withstand sustained periods of unsuccessful drilling. In addition, larger
competitors may be able to absorb the burden of any changes in federal, state
and local laws and regulations more easily than we can, which would adversely
affect our competitive position. These competitors may be able to pay more for
exploratory prospects and productive natural gas and oil properties and may be
able to define, evaluate, bid for and purchase a greater number of properties
and prospects than we can. Our ability to explore for natural gas and oil
prospects and to acquire additional properties in the future will depend on our
ability to conduct operations, to evaluate and select suitable properties and
transactions in this highly competitive environment. Moreover, the oil and gas
industry itself competes with other industries in supplying the energy and fuel
needs of industrial, commercial and other consumers. Increased competition
causing oversupply or depressed prices could greatly affect our operational
revenues.

Our competitors may use superior technology.

     Our industry is subject to rapid and significant advancements in
technology, including the introduction of new products and services using new
technologies. As our competitors use or develop new technologies, we may be
placed at a competitive disadvantage, and competitive pressures may force us to
implement new technologies at a substantial cost. In addition, our competitors
may have greater financial, technical and personnel resources that allow them to
enjoy technological advantages and may in the future allow them to implement new
technologies before we can. We cannot be certain that we will be able to
implement technologies on a timely basis or at a cost that is acceptable to us.
One or more of the technologies that we currently use or that we may implement
in the future may become obsolete, and we may be adversely affected. For
example, marine seismic acquisition technology has been characterized by rapid
technological advancements in recent years and further significant technological
developments could substantially impair our 3-D seismic data's value.

We are subject to legal limitations that may adversely affect the cost, manner
or feasibility of doing business.

     We and our subsidiaries are subject to various foreign and domestic laws
and regulations on taxation, exploration and development, and environmental and
safety matters in countries where we own or operate properties. Many laws and
regulations require drilling permits and govern the spacing of wells, the
prevention of waste, rates of production and other matters. These statutes and
regulations, and any others that are passed by the jurisdictions where we have
production could limit the total number of wells, drilled or the total allowable
production from successful wells, which could limit revenues.

We are subject to various environmental liabilities.

     We could incur liability to governments or third parties for any unlawful
discharge of oil, gas or other pollutants into the air, soil or water, including
responsibility for remedial costs. We could potentially discharge oil or natural
gas into the environment in any of the following ways:

     .    from a well or drilling equipment at a drill site;

     .    leakage from storage tanks, pipelines or other gathering and
          transportation facilities;

                                       17


     .    damage to oil or natural gas wells resulting from accidents during
          normal operations; and

     .    blowouts, cratering or explosions.

Environmental discharges may move through soil to water supplies or adjoining
properties, giving rise to additional liabilities. Some laws and regulations
could impose liability for failure to notify the proper authorities of a
discharge and other failures to comply with those laws. Environmental laws may
also affect our costs to acquire properties. We do not believe that our
environmental risks are materially different from those of comparable companies
in the oil and gas industry. However, we cannot assure you that environmental
laws will not, in the future, result in decreased production, substantially
increased operational costs or other adverse effects to our combined operations
and financial condition. Pollution and similar environmental risks generally are
not fully insurable.

Hedging transactions may not completely mitigate declines in oil and gas prices.

     We cannot predict future oil and gas prices with certainty. To reduce our
exposure to price fluctuations, at times we enter into contracts to hedge
against future market price changes on a portion of our production.
Historically, we have not entered into hedging transactions exceeding 50 percent
of our total oil and gas production on an energy equivalent basis for any given
period. As of December 31, 2000, we had purchased options to sell 70 million
cubic feet of natural gas production per day for the period from April 2001
through December 2002. These contracts give us the right, but not the
obligation, to sell natural gas at a sales price of $4.25 per Mcf for the period
from April 2001 through March 2002 and $4.00 per Mcf for the period from April
2002 through December 2002. These contracts are designed to guarantee us a
minimum "floor" price for the contracted volumes of production without limiting
our participation in price increases during the covered period.

The notes are subordinate to our senior debt and are structurally subordinate to
our subsidiaries' obligations.

     The notes will be senior subordinated obligations. Accordingly, the notes
will be subordinated to all of our existing and future senior indebtedness,
including indebtedness under our bank credit agreement. We expect to incur
additional senior indebtedness from time to time in the future under our bank
credit agreement or otherwise. The indenture governing the notes will limit, but
not prohibit, the incurrence of any other indebtedness by us or our
subsidiaries, including senior indebtedness. The terms "senior indebtedness" and
"indebtedness" are defined in the "Description of the Notes -- Certain
Definitions" section of this prospectus.

     After application of the proceeds from the sale of our outstanding notes,
on April 10, 2001, we had $141,000,000 principal amount of outstanding senior
indebtedness. Upon any distribution of assets, liquidation, dissolution,
reorganization or any similar proceeding by or relating to us, the holders of
our senior indebtedness would be entitled to receive payment in full before the
holders of the notes would be entitled to receive any payment. The terms and
conditions of the subordination provisions pertinent to the notes are described
in more detail in "Description of the Notes -- Subordination."

     The notes will also be effectively subordinated to claims of creditors of
our subsidiaries (other than us) that are not guarantors of the notes, including
lessors, trade creditors, taxing authorities, creditors holding guarantees and
tort claimants. In the event of a liquidation, reorganization or similar
proceeding relating to a subsidiary that is not a guarantor of the notes, these
persons generally will have priority as to the assets of that subsidiary over
our claims and equity interest and, thereby indirectly, holders of our
indebtedness, including the notes. Initially, none of our subsidiaries will
guarantee the notes. However, under certain circumstances, our payment
obligations under the notes may in the future be required to be jointly and
severally guaranteed by our existing or future subsidiaries. See "Description of
the Notes -- Possible Subsidiary Guarantees of the Notes."

The notes are unsecured.

     In addition to being subordinate to all of our senior indebtedness, the
notes will not be secured by any of our assets. Under certain circumstances, our
obligations under our bank credit agreement may become secured by some of our
oil and gas properties. If the bank obligations become secured, and then we
become insolvent, are liquidated, or payment under our bank credit agreement is
accelerated, the lenders under our bank credit agreement would be entitled to
exercise the remedies available to a secured lender under applicable law. Under
these circumstances our bank lenders would have a secured claim on some of our
assets before the holders of these notes. Because the notes

                                       18


are unsecured, there could be no assets remaining for the holders of the notes
or any remaining assets could be insufficient to pay off the notes.

Our subsidiaries have obligations.

     At December 31, 2000, our subsidiaries (principally Thaipo Ltd. ("Thaipo")
B8/32 Partners Ltd. ("B8/32 Partners") and Arch Petroleum Inc.) had total
combined assets of $559,000,000 (exclusive of net receivables to us) and
liabilities of $84,000,000 (exclusive of net payables to us). In addition, at
December 31, 2000, North Central had total assets of $372,000,000 and
liabilities of $199,200,000 (which included $169,900,000 of long-term debt and
deferred compensation payables, all of which were either satisfied at, or prior
to, the merger or became intercompany payables to Pogo). Both the combined
assets and liabilities are exclusive of assets and liabilities associated with
transactions treated as operating leases in our consolidated financial
statements. Among other obligations, Thaipo has guaranteed its pro rata portion
of obligations under an eleven and a half year bareboat charter of a Floating
Production, Storage and Offloading system used for development of the Tantawan
production area. The portion of the obligations under the bareboat charter
guaranteed by Thaipo is currently estimated at $11,122,000 per year for the
first ten years. Thaipo and B8/32 Partners have also entered into a ten year
bareboat charter of a Floating Storage and Offloading system for the Benchamas
Field at an estimated annual cost of approximately $3,946,000, commencing on May
15, 1999. The documents governing such obligations state that we have no
liability for those obligations. In addition, our subsidiaries may incur other
liabilities in the future.

     The indenture governing the notes will limit our and our subsidiaries'
ability to incur additional indebtedness and liens and to enter into agreements
that would restrict the ability of our subsidiaries to make distributions, loans
or other payments to us. That indenture will also impose limits on our ability
to transfer assets to unrestricted subsidiaries or acquire unrestricted
subsidiaries. However, these limitations are subject to various qualifications.
Subject to certain limitations, we and our subsidiaries may incur secured
indebtedness. For additional details of these provisions and the applicable
qualifications, see "Description of the Notes -- Subordination" and " --Certain
Covenants."

Pogo may be considered highly leveraged.

     Assuming the NORIC merger had been completed on December 31, 2000, on a pro
forma basis without giving effect to the offering of the outstanding notes, our
long-term debt and the preferred securities obligations of a Pogo subsidiary
(excluding the current portion) would have totaled $923,613,000 and
shareholders' equity would have been $722,616,000. After issuing the outstanding
notes and applying the net proceeds, on April 10, 2001, our long-term debt was
$706,000,000. We believe that our cash flow from operations, together with funds
available under our bank credit agreement after it is paid down with the net
proceeds we receive from these notes, and other anticipated sources of
liquidity, including additional debt and equity securities that we may offer in
the future and proceeds from asset sales, will be adequate to meet our
anticipated requirements for working capital, capital expenditures, interest
payments and scheduled principal payments. However, our ability to meet our debt
service obligations will be dependent upon our future performance. Our future
performance, in turn, will be subject to general economic conditions and to
financial, business and other factors affecting our operations, many of which
are beyond our control.

The covenant restrictions in the notes and in our other debt restrict our
operations and finances.

     We and our subsidiaries will be subject to significant operating and
financial restrictions contained in the instruments governing the notes and our
other indebtedness. Such restrictions will affect, and in many respects
significantly limit or prohibit, among other things, our ability to:

     .    incur additional indebtedness;

     .    make certain investments;

     .    pay dividends on, redeem or repurchase our capital stock;

     .    issue and sell our restricted subsidiaries' capital stock;

                                       19


     .    engage in transactions with affiliates;

     .    create certain liens;

     .    dispose of asset sales proceeds;

     .    guarantee indebtedness;

     .    incur senior subordinated indebtedness that does not rank equal to the
          notes; or

     .    merge, consolidate and sell assets.

     In addition, our bank credit agreement requires us to maintain certain
financial ratios. These restrictions could also limit our ability to obtain
financing in the future, make needed capital expenditures, withstand a future
downturn in our business or the economy in general or conduct necessary
corporate activities. If we or our subsidiaries fail to comply with these
restrictions, we may be in default under the terms of such indebtedness, even if
we are otherwise able to meet our debt service obligations. In the event of a
default, the holders of such indebtedness could elect to declare all such
indebtedness, together with accrued interest, to be due and payable and a
significant portion of our other indebtedness (including the notes) may become
immediately due and payable. We cannot assure you that we would be able to make
such payments or borrow sufficient funds from alternative sources to make such
payments. Even if we were to obtain additional financing, such financing may be
on terms unfavorable to us.

We may not have enough funds to repurchase the notes upon a change of control.

     Should there be a change of control of Pogo, each holder of the notes will
have the right to require us, subject to certain conditions, to repurchase all
or any part of that holder's notes at a price equal to 101% of the principal of
those notes, plus accrued and unpaid interest, if any, to the date of
repurchase. See "Description of the Notes - Certain Covenants; Change of
Control." Existing senior indebtedness under our bank credit agreement and
certain other of our indebtedness include, and future indebtedness may include,
change of control provisions. Under those provisions, should a specified change
of control event occur, we would be required to repurchase, or the lender could
demand the repayment of, that indebtedness. We would be required to make that
repurchase or repayment of senior indebtedness before repurchasing the notes (or
then outstanding indebtedness ranking equally with the notes that contains
similar change of control provisions). The term "Change of Control" with respect
to the notes is defined in the "Description of the Notes -- Certain Definitions"
section of this prospectus.

     We cannot assure you that we will have sufficient funds available or could
obtain the financing necessary to repurchase the notes and any other outstanding
indebtedness that rank equally with or senior to the notes tendered by holders
of those obligations following a change of control. If a change of control
occurred and we did not have the funds or financing available to pay for the
notes and any other indebtedness ranking equally with, or senior to, the notes
that are tendered for repurchase, an event of default would be triggered under
the indenture governing the notes and under such other outstanding indebtedness.
Each of these defaults could have a material adverse consequence for us and the
holders of the notes.

     In addition, we have three other series of notes outstanding that contain
change of control provisions that are similar to the change of control
provisions contained in the notes. Consequently, an event triggering a change of
control repurchase obligation under the notes may also trigger a change of
control repurchase obligation under those other series of notes.

     Also, the definition of change of control includes a phrase relating to the
sale or other disposition of the our properties and assets "substantially as an
entirety." Although there is a developing body of case law interpreting phrases
such as "substantially as an entirety," there is no precise established
definition of such phrases under applicable law. Accordingly, the ability of a
holder of the notes to require us to repurchase its notes as a result of our
sale or other disposition of less than all our properties and assets on a
consolidated basis to another person or related group of persons may be
uncertain. See "Description of the Notes -- Certain Covenants; Change of
Control."

                                       20


Any subsidiary guarantees of the notes may be subordinated or avoided by a
court.

     None of our subsidiaries will guarantee the notes initially. If our
existing or future restricted subsidiaries guarantee any of our other
indebtedness, they will be required by the terms of the indenture governing the
notes to jointly and severally guarantee the notes on a senior subordinated
basis. We do not intend to cause any of our subsidiaries to take any action that
would require it to issue a guarantee of the notes. Various applicable
fraudulent conveyance laws have been enacted for the protection of creditors. A
court may use those laws to subordinate or avoid any guarantee of the notes
issued by any of our subsidiaries. It is also possible that under certain
circumstances a court could hold that the direct obligations of a subsidiary
guaranteeing the notes could be superior to the obligations under that
guarantee.

     A court could avoid or subordinate the guarantee of the notes by any of our
subsidiaries in favor of that subsidiary's other debts or liabilities to the
extent that the court determined either of the following were true at the time
the subsidiary issued the guarantee:

     .    that subsidiary incurred the guarantee with the intent to hinder,
          delay or defraud any of its present or future creditors or that such
          subsidiary contemplated insolvency with a design to favor one or more
          creditors to the total or partial exclusion of others; or

     .    that subsidiary did not receive fair consideration or reasonably
          equivalent value for issuing the guarantee and, at the time it issued
          the guarantee, that subsidiary:

          --   was insolvent or rendered insolvent by reason of the issuance of
               the guarantee,

          --   was engaged or about to engage in a business or transaction for
               which the remaining assets of that subsidiary constituted
               unreasonably small capital, or

          --   intended to incur, or believed that it would incur, debts beyond
               its ability to pay such debts as they matured.

Among other things, a legal challenge of a subsidiary's guarantee of the notes
on fraudulent conveyance grounds may focus on the benefits, if any, realized by
that subsidiary as a result of our issuance of the notes. To the extent a
subsidiary's guarantee of the notes is avoided as a result of fraudulent
conveyance or held unenforceable for any other reason, the note holders would
cease to have any claim in respect of that guarantee and would be creditors
solely of ours.

There is no trading market for the notes and there may never be one.

     The new notes will be new securities for which currently there is no
trading market. We do not currently intend to apply for listing of the new notes
issued in the exchange offer on any securities exchange or stock market. All of
the notes will be eligible for trading in The Portal(SM) Market. Although the
initial purchaser of the notes has informed us that it currently intends to make
a market in the notes and any notes issued in the exchange offer, it is not
obligated to do so. Any such market making may be discontinued at any time
without notice. The liquidity of any market for any new notes issued in the
exchange offer will depend on the number of holders of those notes, the interest
of securities dealers in making a market in those securities and other factors.
Accordingly, we cannot assure you as to the development or liquidity of any
market for the new notes. Historically, the market for noninvestment grade debt
has been subject to disruptions that have caused substantial volatility in the
prices of securities similar to the notes. We cannot assure you that the market,
if any, for the notes will be free from similar disruptions. Any such
disruptions may adversely affect the note holders.

                                       21


                               Private Placement

     On April 10, 2001, the Company issued $200,000,000 principal amount of the
outstanding notes to the initial purchaser of those notes (the "Initial
Purchaser") in a private transaction not registered under the Securities Act of
1933, as amended (the "Securities Act"), in reliance upon Section 4(2) of the
Securities Act. The Initial Purchaser then offered and resold the outstanding
notes to qualified institutional buyers at an initial price to such purchasers
of 100% of the principal amount of those notes.



                                Use of Proceeds

     The Company will not receive any cash proceeds from the issuance of the new
notes. In consideration for issuing the new notes, the Company will receive in
exchange a like principal amount of outstanding notes. The outstanding notes
surrendered in exchange for the new notes will be retired and canceled and
cannot be reissued. Accordingly, issuance of the new notes will not result in
any change in the Company's capitalization.



                      Ratio of Earnings to Fixed Charges

     The following table sets forth Pogo's consolidated ratio of earnings to
fixed charges for the periods shown.




                                                                                   Year Ended December 31,
                                                                          ----------------------------------------
                                                                          1996     1997     1998     1999     2000
                                                                          ----     ----     ----     ----     ----
                                                                                               
Ratio of earnings to fixed charges (1)..........................          4.6x     3.2x     N/A      1.3x     4.0x
Supplemental pro forma ratio of earnings to fixed charges (2)...           --       --       --       --      2.8x


----------

(1)  The ratio of earnings to fixed charges was computed by dividing earnings by
     fixed charges. For this purpose, earnings are defined as income before
     income taxes plus fixed charges excluding capitalized interest. Fixed
     charges consist of interest expense, the estimated interest component of
     rent expense and minority interest. For the year ended December 31, 1998,
     earnings were insufficient to cover fixed charges by $80,230,000.

(2)  The supplemental pro forma ratio of earnings to fixed charges is calculated
     in accordance with SEC guidelines and gives effect to the merger of NORIC
     Corporation with and into Pogo and the debt issued by Pogo pursuant to the
     related credit facilities on the basis set forth in the unaudited pro forma
     condensed consolidated statement of income for the year ended December 31,
     2000 contained in our current report on Form 8-K filed on March 26, 2001,
     as if such transaction had occurred on January 1, 2000. See "Where You Can
     Find More Information."

                                       22


                                Capitalization

     The following table sets forth the unaudited consolidated debt and
capitalization of Pogo and our subsidiaries at December 31, 2000. The table has
also been adjusted to reflect the issuance of the outstanding notes assuming the
offering had occurred on December 31, 2000. On March 14, 2001, we completed the
acquisition of North Central Oil Corporation through the merger of its parent
company, NORIC Corporation, with and into Pogo. In connection with the merger,
Pogo paid former shareholders of NORIC Corporation $344,710,000 in cash and
issued them 12,615,816 shares of Pogo common stock. Pogo also repaid all
$78,600,000 of North Central's bank debt. At April 10, 2001, following
application of the net proceeds from the sale of the outstanding notes, we had
$141,000,000 in bank debt. This table should be read in conjunction with the
consolidated financial statements and related notes thereto included in our
Annual Report and incorporated by reference in this prospectus. See "Where You
Can Find More Information."



                                                                                         December 31, 2000
                                                                                    ---------------------------
                                                                                       Actual       As Adjusted
                                                                                     -----------    -----------
                                                                                           (In thousands)
                                                                                              
               Long-Term Debt, Including Current Portion:
                   Credit Agreement indebtedness..................................   $        --    $        --
                   Uncommitted credit line with bank..............................            --             --
                   8 1/4% Senior Subordinated Notes, due 2011, offered hereby.....            --        200,000
                   10 3/8% Senior Subordinated Notes, due 2009....................       150,000        150,000
                   8 3/4% Senior Subordinated Notes, due 2007.....................       100,000        100,000
                   5 1/2% Convertible subordinated notes, due 2006................       115,000        115,000
                                                                                     -----------    -----------
                        Total long-term debt......................................       365,000        565,000
                                                                                     -----------    -----------
                Minority Interests:
                   Company-obligated manditorily redeemable convertible
                      preferred securities of a subsidiary trust, net of
                      unamortized
                      issue expenses..............................................       144,913        144,913

               Shareholders' Equity:
                   Preferred stock, $1 par value; 2,000,000 shares authorized;
                      no shares
                      issued and outstanding......................................            --             --
                   Common Stock, $1 par value; 100,000,000 shares authorized;
                      40,659,591 shares issued and outstanding....................        40,660         40,660
                   Additional capital.............................................       298,885        298,885
                   Retained earnings..............................................        20,112         20,112
                   Accumulated other comprehensive loss...........................        (1,062)        (1,062)
                   Treasury stock (15,575), at cost...............................          (324)          (324)
                                                                                     -----------    -----------
                        Total shareholders' equity................................       358,271        358,271
                                                                                     -----------    -----------

               Total Capitalization...............................................   $   868,184    $ 1,068,184
                                                                                     ===========    ===========


                                       23


                              The Exchange Offer

Purpose and Effect of the Exchange Offer

     We entered into a registration rights agreement with the initial purchaser
of the outstanding notes in which we agreed to file a registration statement
relating to an offer to exchange the outstanding notes for new notes. We also
agreed to use its reasonable best efforts to complete that offer within 180 days
after April 10, 2001. We are offering the new notes under this prospectus to
satisfy our obligations under the registration rights agreement.

     Under limited circumstances, we will use our reasonable best efforts to
cause the SEC to declare effective a shelf registration statement with respect
to the resale of the outstanding notes and keep the shelf registration statement
effective for up to two years after the effective date of the shelf registration
statement. These circumstances include:

     .    if any changes in law or applicable interpretations by the staff of
          the SEC do not permit us to effect the exchange offer as contemplated
          by the registration rights agreement

     .    if the exchange offer is not consummated within 180 days after April
          10, 2001

     .    in certain circumstances, at the request of the initial purchaser of
          the outstanding notes.

     If we fail to comply with deadlines for registering the issuance of the new
notes and completion of the exchange offer, we will be required to pay
additional interest to holders of the outstanding notes. Please read the section
captioned "Outstanding Notes Registration Rights Agreement" for more details
regarding the registration rights agreement.

     To exchange an outstanding note for transferable new notes in the exchange
offer, the holder of that outstanding note will be required to make the
following representations:

     .    any new note the holder receives will be acquired in the ordinary
          course of its business

     .    the holder has no arrangement with any person to participate in the
          distribution of the new notes

     .    if the holder is not a broker-dealer, that holder is not engaged in
          and does not intend to engage in the distribution of the new notes

     .    if the holder is a broker-dealer that will receive new notes for its
          own account in exchange for outstanding notes that were acquired as a
          result of market-making activities, that holder will deliver a
          prospectus, as required by law, in connection with any resale of such
          new notes

     .    the holder is not the Company's "affiliate," as defined in Rule 405 of
          the Securities Act, nor a broker-dealer tendering outstanding notes
          acquired directly from the Company for its own account

Resale of New Notes

     Based on interpretations of the SEC staff in no action letters issued to
third parties, we believe that each new note issued under the exchange offer may
be offered for resale, resold and otherwise transferred by the holder of that
new note without compliance with the registration and prospectus delivery
provisions of the Securities Act if:

     .    the holder is not the Company's "affiliate" within the meaning of Rule
          405 under the Securities Act

     .    such new note is acquired in the ordinary course of the holder's
          business

     .    the holder does not intend to participate in the distribution of new
          notes

     If a holder of outstanding notes tenders in the exchange offer with the
intention of participating in any manner in a distribution of the new notes,
that holder

                                       24


     .    cannot rely on such interpretations by the SEC staff

     .    must comply with the registration and prospectus delivery requirements
          of the Securities Act in connection with a secondary resale
          transaction.

     Unless an exemption from registration is otherwise available, any security
holder intending to distribute new notes should be covered by an effective
registration statement under the Securities Act containing the selling
securityholder's information required by Item 507 of Regulation S-K under the
Securities Act. This prospectus may be used for an offer to resell, resale or
other retransfer of new notes only as specifically described in this prospectus.
Only broker-dealers that acquired the outstanding notes as a result of
market-making activities or other trading activities may participate in the
exchange offer. Please read the section captioned "Plan of Distribution" for
more details regarding the transfer of new notes.

Terms of the Exchange Offer

     Upon the terms and subject to the conditions described in this prospectus
and in the letter of transmittal, we will accept for exchange any outstanding
notes properly tendered and not withdrawn prior to the expiration date. We will
issue $1,000 principal amount of new notes in exchange for each $1,000 principal
amount of outstanding notes surrendered under the exchange offer. Outstanding
notes may be tendered only in integral multiples of $1,000.

     The exchange offer is not conditioned upon any minimum aggregate principal
amount of outstanding notes being tendered for exchange.

     As of the date of this prospectus, $200 million aggregate principal amount
of the outstanding notes are outstanding. This prospectus and the letter of
transmittal are being sent to all registered holders of outstanding notes. There
will be no fixed record date for determining registered holders of outstanding
notes entitled to participate in the exchange offer.

     We intend to conduct the exchange offer in accordance with the provisions
of the registration rights agreement, the applicable requirements of the
Securities Act and the Securities Exchange Act of 1934 and the rules and
regulations of the SEC. Outstanding notes that are not tendered for exchange in
the exchange offer will remain outstanding and continue to accrue interest and
will be entitled to the rights and benefits such holders have under the
indenture relating to the notes and the registration rights agreement.

     We will be deemed to have accepted for exchange properly tendered
outstanding notes when we have given oral or written notice of the acceptance to
the exchange agent and complied with the applicable provisions of the
registration rights agreement. The exchange agent will act as agent for the
tendering holders for the purposes of receiving the new notes from the Company.

     Holders tendering outstanding notes in the exchange offer will not be
required to pay brokerage commissions or fees or, subject to the instructions in
the letter of transmittal, transfer taxes with respect to the exchange of
outstanding notes. We will pay all charges and expenses, other than certain
applicable taxes described below, in connection with the exchange offer. It is
important for noteholders to read the section labeled "--Fees and Expenses" for
more details regarding fees and expenses incurred in the exchange offer.

     We will return any outstanding notes that we do not accept for exchange for
any reason without expense to the tendering holder as promptly as practicable
after the expiration or termination of the exchange offer.

Expiration Date

     The exchange offer will expire at 5:00 p.m., New York City time on
June 1, 2001, unless in our sole discretion, we extend the deadline.

                                       25


Extensions, Delay in Acceptance, Termination or Amendment

     We expressly reserve the right, at any time or at various times, to extend
the period of time during which the exchange offer is open. During any such
extensions, all outstanding notes previously tendered will remain subject to the
exchange offer, and we may accept them for exchange.

     In order to extend the exchange offer, we will notify the exchange agent
orally or in writing of any extension. We will also make a public announcement
of the extension no later than 9:00 a.m., New York City time, on the next
business day after the previously scheduled expiration date.

     If any of the conditions described below under "--Conditions to the
Exchange Offer" have not been satisfied, we reserve the right, in our sole
discretion, to delay accepting for exchange any outstanding notes or to extend
the exchange offer or to terminate the exchange offer by giving oral or written
notice of such delay, extension or termination to the exchange agent. Subject to
the terms of the registration rights agreement, we also reserve the right to
amend the terms of the exchange offer in any manner.

     Any such delay in acceptance, extension, termination or amendment will be
followed as promptly as practicable by oral or written notice thereof to the
registered holders of outstanding notes. If we amend the exchange offer in a
manner that we determine to constitute a material change, we will promptly
disclose such amendment by means of a prospectus supplement. The supplement will
be distributed to the registered holders of the outstanding notes. Depending
upon the significance of the amendment and the manner of disclosure to the
registered holders, we will extend the exchange offer if the exchange offer
would otherwise expire during such period.

     Without limiting the manner in which we may choose to make public
announcements of any delay in acceptance, extension, termination or amendment of
the exchange offer, we will have no obligation to publish, advertise, or
otherwise communicate any such public announcement, other than by making a
timely release to the Dow Jones News Service.

Conditions to the Exchange Offer

     Despite any other term of the exchange offer, we will not be required to
accept for exchange, or exchange any new notes for, any outstanding notes, and
we may terminate the exchange offer as provided in this prospectus before
accepting any outstanding notes for exchange, if in our reasonable judgment the
exchange offer, or the making of any exchange by a holder of outstanding notes,
would violate applicable law or any applicable interpretation of the staff of
the SEC.

     In addition, we will not be obligated to accept for exchange the
outstanding notes of any holder that has not made to us (1) the representations
described under "--Purpose and Effect of the Exchange Offer," "--Procedures for
Tendering" and "Plan of Distribution" and (2) such other representations as may
be reasonably necessary under applicable SEC rules, regulations or
interpretations to make available to us an appropriate form for registration of
the new notes under the Securities Act.

     We expressly reserve the right to amend or terminate the exchange offer,
and to reject for exchange any outstanding notes not previously accepted for
exchange, upon the occurrence of any of the conditions to the exchange offer
specified above. We will give oral or written notice of any extension,
amendment, non-acceptance or termination to the holders of the outstanding notes
as promptly as practicable.

     These conditions are for our sole benefit and we may assert them or waive
them in whole or in part at any time or at various times in our sole discretion.
If we fail at any time to exercise any of these rights, this failure will not
mean that we have waived our rights. Each such right will be deemed an ongoing
right that we may assert at any time or at various times.

     In addition, we will not accept for exchange any outstanding notes
tendered, and will not issue new notes in exchange for any such outstanding
notes, if at such time any stop order has been threatened or is in effect with
respect to the registration statement of which this prospectus constitutes a
part or the qualification of the indenture relating to the notes under the Trust
Indenture Act of 1939.

                                       26


Procedures for Tendering

How to Tender Generally

     Only a holder of outstanding notes may tender such outstanding notes in the
exchange offer. To tender in the exchange offer, a holder must:

     .    complete, sign and date the letter of transmittal, or a facsimile of
          the letter of transmittal; have the signature on the letter of
          transmittal guaranteed if the letter of transmittal so requires; and
          mail or deliver such letter of transmittal or facsimile to the
          exchange agent prior to the expiration date

     .    comply with the automated tender offer program procedures of The
          Depository Trust Company, or DTC, described below

     In addition, either:

     .    the exchange agent must receive outstanding notes along with the
          letter of transmittal

     .    the exchange agent must receive, prior to the expiration date, a
          timely confirmation of book-entry transfer of such outstanding notes
          into the exchange agent's account at DTC according to the procedure
          for book-entry transfer described below or a properly transmitted
          agent's message, or

     .    the holder must comply with the guaranteed delivery procedures
          described below

     To be tendered effectively, the exchange agent must receive physical
delivery of the letter of transmittal and other required documents at its
address provided above under "Prospectus Summary--The Exchange Agent" prior to
the expiration date.

     The tender by a holder that is not withdrawn prior to the expiration date
will constitute an agreement between the holder and the Company in accordance
with the terms and subject to the conditions described in this prospectus and in
the letter of transmittal.

     The method of delivery of outstanding notes, the letter of transmittal and
all other required documents to the exchange agent is at the holder's election
and risk. Rather than mail these items, we recommend that holders use an
overnight or hand delivery service. In all cases, holders should allow
sufficient time to assure delivery to the exchange agent before the expiration
date. Holders should not send the letter of transmittal or outstanding notes to
the Company. Holders may request their brokers, dealers, commercial banks, trust
companies or other nominees to effect the above transactions for you.

How to Tender--Beneficial Owners

     Beneficial owners of outstanding notes that are registered in the name of a
broker, dealer, commercial bank, trust company or other nominee wishing to
tender those notes should contact the registered holder promptly and instruct it
to tender on the beneficial owner's behalf. Beneficial owners who wish to tender
on their own behalf must, prior to completing and executing the letter of
transmittal and delivering their outstanding notes, either:

     .    make appropriate arrangements to register ownership of the outstanding
          notes in their name, or

     .    obtain a properly completed bond power from the registered holder of
          outstanding notes

     The transfer of registered ownership may take considerable time and may not
be completed prior to the expiration date.

Signatures and Signature Guarantees

     Holders of outstanding notes must have signatures on a letter of
transmittal or a notice of withdrawal described below guaranteed by a member
firm of a registered national securities exchange or of the National Association
of

                                       27


Securities Dealers, Inc., a commercial bank or trust company having an office or
correspondent in the United States, or an "eligible guarantor institution"
within the meaning of Rule 17Ad-15 under the Securities Exchange Act of 1934,
that is a member of one of the recognized signature guarantee programs
identified in the letter of transmittal, unless the outstanding notes are
tendered:

     .    by a registered holder who has not completed the box entitled "Special
          Issuance Instructions" or "Special Delivery Instructions" on the
          letter of transmittal and the new notes are being issued directly to
          the registered holder of the outstanding notes tendered in the
          exchange for those new notes; or

     .    for the account of a member firm of a registered national securities
          exchange or of the National Association of Securities Dealers, Inc., a
          commercial bank or trust company having an office or correspondent in
          the United States, or an eligible guarantor institution.

When Endorsements or Bond Powers are Needed

     If the letter of transmittal is signed by a person other than the
registered holder of any outstanding notes, the outstanding notes must be
endorsed or accompanied by a properly completed bond power. The bond power must
be signed by the registered holder as the registered holder's name appears on
the outstanding notes and a member firm of a registered national securities
exchange or of the National Association of Securities Dealers, Inc., a
commercial bank or trust company having an office or correspondent in the United
States, or an eligible guarantor institution must guarantee the signature on the
bond power.

     If the letter of transmittal or any outstanding notes or bond powers are
signed by trustees, executors, administrators, guardians, attorneys-in-fact,
officers of corporations or other acting in a fiduciary or representative
capacity, those persons should so indicate when signing. Unless waived by the
Company, they should also submit evidence satisfactory to us of their authority
to deliver the letter of transmittal.

Tendering Through DTC's Automated Tender Offer Program

     The exchange agent and DTC have confirmed that any financial institution
that is a participant in DTC's system may use DTC's automated tender offer
program to tender. Participants in the program may, instead of physically
completing and signing the letter of transmittal and delivering it to the
exchange agent, transmit their acceptance of the exchange offer electronically.
They may do so by causing DTC to transfer the outstanding notes to the exchange
agent in accordance with its procedures for transfer. DTC will then send an
agent's message to the exchange agent.

     The term "agent's message" means a message transmitted by DTC, received by
the exchange agent and forming part of the book-entry confirmation, to the
effect that:

     .    DTC has received an express acknowledgment from a participant in its
          automated tender offer program that is tendering outstanding notes
          that are the subject of such book-entry confirmation;

     .    such participant has received and agrees to be bound by the terms of
          the letter of transmittal or, in the case of an agent's message
          relating to guaranteed delivery, that such participant has received
          and agrees to be bound by the applicable notice of guaranteed
          delivery; and

     .    the agreement may be enforced against such participant.

Determinations Under the Exchange Offer

     We will determine in our sole discretion all questions as to the validity,
form, eligibility, time of receipt, acceptance of tendered outstanding notes and
withdrawal of tendered outstanding notes. Our determination will be final and
binding. We reserve the absolute right to reject any outstanding notes not
properly tendered or any outstanding notes our acceptance of which would, in the
opinion of our counsel, be unlawful. We also reserve the right to waive any
defects, irregularities or conditions of tender as to particular outstanding
notes. Our interpretation of the terms and conditions of the exchange offer,
including the instructions in the letter of transmittal, will be final and
binding on all parties. Unless waived, any defects or irregularities in
connection with tenders of outstanding notes must be cured within such time as
we shall determine. Neither the Company, the exchange agent nor any other

                                       28


person will be under any duty to give notification of defects or irregularities
with respect to tenders of outstanding notes, and they will incur no liability
for failure to give such notification. Tenders of outstanding notes will not be
deemed made until such defects or irregularities have been cured or waived. Any
outstanding notes received by the exchange agent that are not properly tendered
and as to which the defects or irregularities have not been cured or waived will
be returned to the tendering holder, unless otherwise provided in the letter of
transmittal, as soon as practicable following the expiration date.

When the Company Will Issue New Notes

     In all cases, we will issue new notes for outstanding notes that we have
accepted for exchange under the exchange offer only after the exchange agent
timely receives:

     .    outstanding notes or a timely book-entry confirmation of such
          outstanding notes into the exchange agent's account at DTC; and

     .    a properly completed and duly executed letter of transmittal and all
          other required documents or a properly transmitted agent's message.

Return of Outstanding Notes Not Accepted or Exchanged

     If we do not accept any tendered outstanding notes for exchange for any
reason described in the terms and conditions of the exchange offer or if
outstanding notes are submitted for a greater principal amount than the holder
desires to exchange, the unaccepted or non-exchanged outstanding notes will be
returned without expense to their tendering holder. In the case of outstanding
notes tendered by book-entry transfer into the exchange agent's account at DTC
according to the procedures described below, such non-exchanged outstanding
notes will be credited to an account maintained with DTC. These actions will
occur as promptly as practicable after the expiration or termination of the
exchange offer.

Representations to the Company

     Each holder, by signing or agreeing to be bound by the letter of
transmittal, will represent to the Company that, among other things:

     .    any new notes that the holder receives will be acquired in the
          ordinary course of its business

     .    that holder has no arrangement or understanding with any person or
          entity to participate in the distribution of the new notes

     .    if the holder is not a broker-dealer, that the holder is not engaged
          in and does not intend to engage in the distribution of the new notes

     .    if the holder is a broker-dealer that will receive new notes for its
          own account in exchange for outstanding notes that were acquired as a
          result of market-making activities, that the holder will deliver a
          prospectus, as required by law, in connection with any resale of such
          new notes

     .    that holder is not the Company's "affiliate," as defined in Rule 405
          of the Securities Act, or, if the holder is an affiliate of the
          Company, that holder will comply with any applicable registration and
          prospectus delivery requirements of the Securities Act.

Book-Entry Transfer

     The exchange agent will make a request to establish an account with respect
to the outstanding notes at DTC for purposes of the exchange offer promptly
after the date of this prospectus. Any financial institution participating in
DTC's system may make book-entry delivery of outstanding notes by causing DTC to
transfer such outstanding notes into the exchange agent's account at DTC in
accordance with DTC's procedures for transfer. Holders of outstanding notes who
are unable to deliver confirmation of the book-entry tender of their outstanding
notes into the exchange agent's account at DTC or all other documents required
by the letter of transmittal to the exchange agent on or prior

                                       29


to the expiration date must tender their outstanding notes according to the
guaranteed delivery procedures described below.

Guaranteed Delivery Procedures

     Any holder wishing to tender its outstanding notes but whose outstanding
notes are not immediately available or who cannot deliver its outstanding notes,
the letter of transmittal or any other required documents to the exchange agent
or comply with the applicable procedures under DTC's automated tender offer
program prior to the expiration date may tender if:

     .    the tender is made through a member firm of a registered national
          securities exchange or of the National Association of Securities
          Dealers, Inc., a commercial bank or trust company having an office or
          correspondent in the United States, or an eligible guarantor
          institution;

     .    prior to the expiration date, the exchange agent receives from such
          member firm of a registered national securities exchange or of the
          National Association of Securities Dealers, Inc., commercial bank or
          trust company having an office or correspondent in the United States,
          or eligible guarantor institution either a properly completed and duly
          executed notice of guaranteed delivery by facsimile transmission, mail
          or hand delivery or a properly transmitted agent's message and notice
          of guaranteed delivery:

          .    setting forth the holder's name and address, the registered
               number(s) of the holder's outstanding notes and the principal
               amount of outstanding notes tendered

          .    stating that the tender is being made thereby

          .    guaranteeing that, within five business days after the expiration
               date, the letter of transmittal or facsimile thereof, together
               with the outstanding notes or a book-entry confirmation, and any
               other documents required by the letter of transmittal will be
               deposited by the eligible guarantor institution with the exchange
               agent; and

     .    the exchange agent receives such properly completed and executed
          letter of transmittal or facsimile thereof, as well as all tendered
          outstanding notes in proper form for transfer or a book-entry
          confirmation, and all other documents required by the letter of
          transmittal, within five business days after the expiration date.

     Upon request to the exchange agent, a notice of guaranteed delivery will be
sent to a holder if it wishes to tender its outstanding notes according to the
guaranteed delivery procedures described above.

Withdrawal of Tenders

     Except as otherwise provided in this prospectus, any holder may withdraw
its tender at any time prior to 5:00 p.m., New York City time, on the expiration
date (unless previously accepted for exchange).

     For a withdrawal to be effective:

     .    the exchange agent must receive a written notice of withdrawal at one
          of the addresses listed above under "Prospectus Summary--The Exchange
          Agent" or

     .    the withdrawing holder must comply with the appropriate procedures of
          DTC's automated tender offer program system.

     Any notice of withdrawal must:

     .    specify the name of the person who tendered the outstanding notes to
          be withdrawn (the "Depositor")

     .    identify the outstanding notes to be withdrawn, including the
          registration number or numbers and the principal amount of such
          outstanding notes

                                       30


     .    be signed by the Depositor in the same manner as the original
          signature on the letter of transmittal used to deposit those
          outstanding notes (or be accompanied by documents of transfer
          sufficient to permit the trustee for the outstanding notes to register
          the transfer into the name of the Depositor withdrawing the tender)

     .    specify the name in which such outstanding notes are to be registered,
          if different from that of the Depositor

     If outstanding notes have been tendered under the procedure for book-entry
transfer described above, any notice of withdrawal must specify the name and
number of the account at DTC to be credited with the withdrawn outstanding notes
and otherwise comply with the procedures of DTC.

     We will determine all questions as to the validity, form, eligibility and
time of receipt of notice of withdrawal, and our determination shall be final
and binding on all parties. We will deem any outstanding notes so withdrawn not
to have been validly tendered for exchange for purposes of the exchange offer.

     Any outstanding notes that have been tendered for exchange but that are not
exchanged for any reason will be returned to their holder without cost to the
holder or, in the case of outstanding notes tendered by book-entry transfer into
the exchange agent's account at DTC according to the procedures described above,
such outstanding notes will be credited to an account maintained with DTC for
the outstanding notes. This return or crediting will take place as soon as
practicable after withdrawal, rejection of tender or termination of the exchange
offer. Holders may retender properly withdrawn outstanding notes by following
one of the procedures described under "--Procedures for Tendering" above at any
time on or prior to the expiration date.

Fees and Expenses

     We will bear the expenses of soliciting tenders. The principal solicitation
is being made by mail; however, we may make additional solicitation by
facsimile, telephone or in person by our officers and regular employees and
those of our affiliates.

     We have not retained any dealer-manager in connection with the exchange
offer and will not make any payments to broker-dealers or others soliciting
acceptances of the exchange offer. We will, however, pay the exchange agent
reasonable and customary fees for its services and reimburse it for its related
reasonable out-of-pocket expenses. We may also pay brokerage houses and other
custodians, nominees and fiduciaries the reasonable out-of-pocket expenses
incurred by them in forwarding copies of this prospectus, letters of transmittal
and related documents to the beneficial owners of the outstanding notes and in
handling or forwarding tenders for exchange.

     We will pay the cash expenses to be incurred in connection with the
exchange offer. They include:

     .    SEC registration fees

     .    fees and expenses of the exchange agent and trustee

     .    accounting and legal fees and printing costs

     .    related fees and expenses.

Transfer Taxes

     We will pay all transfer taxes, if any, applicable to the exchange of
outstanding notes under the exchange offer. The tendering holder, however, will
be required to pay any transfer taxes, whether imposed on the registered holder
or any other person, if:

     .    certificates representing outstanding notes for principal amounts not
          tendered or accepted for exchange are to be delivered to, or are to be
          issued in the name of, any person other than the registered holder of
          outstanding notes tendered

     .    tendered outstanding notes are registered in the name of any person
          other than the person signing the letter of transmittal

                                       31


     .    a transfer tax is imposed for any reason other than the exchange of
          outstanding notes under the exchange offer.

If satisfactory evidence of payment of any transfer taxes payable by a note
holder is not submitted with the letter of transmittal, the amount of such
transfer taxes will be billed directly to that tendering holder.

Consequences of Failure to Exchange

     Holders who do not exchange their outstanding notes for new notes under the
exchange offer will remain subject to the existing restrictions on transfer of
the outstanding notes.

     In general, such a holder may not offer or sell the outstanding notes
unless they are registered under the Securities Act, or if the offer or sale is
exempt from registration under the Securities Act and applicable state
securities laws. Except as required by the registration rights agreement, we do
not intend to register resales of the outstanding notes under the Securities
Act. Based on interpretations of the SEC staff, holders may offer for resale,
resell or otherwise transfer new notes issued in the exchange offer without
compliance with the registration and prospectus delivery provisions of the
Securities Act, if (1) they are not the Company's "affiliate" within the meaning
of Rule 405 under the Securities Act, (2) they acquired the new notes in the
ordinary course of their business and (3) they have no arrangement or
understanding with respect to the distribution of the new notes to be acquired
in the exchange offer. If a holder tenders in the exchange offer for the purpose
of participating in a distribution of the new notes, it:

     .    cannot rely on the applicable interpretations of the SEC

     .    must comply with the registration and prospectus delivery requirements
          of the Securities Act in connection with a secondary resale
          transaction.

Accounting Treatment

     No gain or loss for accounting purposes will be recognized by the Company
upon the consummation of the exchange offer. The expenses of the exchange offer
will be amortized by us over the term of the new notes under generally accepted
accounting principles.

Other

     Participation in the exchange offer is voluntary, and holders of
outstanding notes should carefully consider whether to accept. Those holders are
urged to consult their financial and tax advisors in making their own decision
on what action to take.

     We may in the future seek to acquire untendered outstanding notes in open
market or privately negotiated transactions, through subsequent exchange offers
or otherwise. We have no present plans to acquire any outstanding notes that are
not tendered in the exchange offer or to file a registration statement to permit
resales of any untendered outstanding notes.

                                       32


                           Description of the Notes

     The new notes will be issued, and the outstanding notes were issued,
pursuant to an indenture (the "Indenture") between the Company, as issuer, and
Wells Fargo Bank Minnesota, National Association, as trustee (the "Trustee").
The terms of the notes include those stated in the Indenture and those made part
of the Indenture by the Trust Indenture Act of 1939, as amended (the "Trust
Indenture Act"). The definitions of certain capitalized terms used in the
following summary are set forth below under "-- Certain Definitions."

     The following description is a summary of the material provisions of the
Indenture. It does not restate that agreement in its entirety. The Company urges
Holders to read the Indenture because it, and not this description, defines the
rights of Holders of these notes. The Company has filed the Indenture as an
exhibit to the registration statement which includes this Prospectus.

     If the exchange offer contemplated by this prospectus (the "Exchange
Offer") is consummated, Holders of outstanding notes who do not exchange those
notes for new notes in the Exchange Offer will vote together with Holders of new
notes for all relevant purposes under the Indenture. In that regard, the
Indenture requires that certain actions by the Holders thereunder, including
acceleration following an Event of Default, must be taken, and certain rights
must be exercised, by specified minimum percentages of the aggregate principal
amount of the outstanding securities issued under the Indenture. In determining
whether Holders of the requisite percentage in principal amount have given any
notice, consent or waiver or taken any other action permitted under the
Indenture, any outstanding notes that remain outstanding after the Exchange
Offer will be aggregated with the new notes, and the Holders of such outstanding
notes and the new notes will vote together as a single series for all such
purposes. Accordingly, all references herein to specified percentages in
aggregate principal amount of the notes outstanding shall be deemed to mean, at
any time after the Exchange Offer is consummated, such percentages in aggregate
principal amount of the outstanding notes and the new notes then outstanding.

Brief Description of the Notes

     The notes:

     .    are unsecured obligations of the Company;

     .    are limited to $200,000,000 aggregate principal amount;

     .    are subordinated in right of payment to all existing and future Senior
          Indebtedness of the Company;

     .    are senior in right of payment to all existing and future Subordinated
          Indebtedness of the Company; and

     .    rank equally with all Pari Passu Indebtedness.

     The new notes will be issued, and the outstanding notes were issued, only
in registered form, without coupons, in denominations of $1,000 and integral
multiples thereof. Principal of, premium, if any, on and interest on the notes
is payable, and the notes are transferable, at the office or agency of the
Company in the City of New York maintained for such purposes, which initially
will be the corporate trust office or agency of the Trustee maintained at New
York, New York. In addition, interest may be paid, at the option of the Company,
by check mailed to the registered Holders of the notes at their respective
addresses as shown on the Note Register or, upon application to the Trustee by
any Holder of an aggregate principal amount of notes in excess of $1,000,000 not
later than the applicable Regular Record Date, by transfer to an account (such
transfer to be made only to a Holder of an aggregate principal amount of notes
in excess of $1,000,000) maintained by such Holder with a bank in New York City.
No transfer will be made to any such account unless the Trustee has received
written wire instructions not less than 15 days prior to the relevant payment
date. No service charge will be made for any transfer, exchange or redemption of
notes, but the Company or the Trustee may require payment of a sum sufficient to
cover any tax or other governmental charge that may be payable in connection
therewith. For a discussion of the circumstances in which the interest rate on
the outstanding notes may be temporarily increased, see "Outstanding Notes
Registration Rights Agreement."

     Any outstanding notes that remain outstanding after the completion of the
Exchange Offer, together with the new notes issued in connection with the
Exchange Offer, will be treated as a single class of securities under the
Indenture.

                                       33


Maturity, Interest and Principal Payments

     The notes will mature on April 15, 2011. Interest on the notes will accrue
at the rate of 8 1/4% per annum and will be payable semiannually on April 15 and
October 15 of each year (each an "Interest Payment Date"), commencing October
15, 2001, to the Person in whose name the note is registered in the Note
Register at the close of business on the April 1, or October 1 next preceding
such interest payment date. Interest will be computed on the basis of a 360-day
year comprised of twelve 30-day months.

Redemption

Optional Redemption.

     The notes will be redeemable at the option of the Company, in whole or in
part, at any time on or after April 15, 2006, at the redemption prices
(expressed as percentages of principal amount) set forth below, plus accrued and
unpaid interest, if any, to the redemption date, subject to the right of Holders
of record on the relevant record date to receive interest due on an interest
payment date that is on or prior to the redemption date, if redeemed during the
12-month period beginning on April 15 of the years indicated below:



                                                                                                          Redemption
            Year                                                                                             Price
            ----                                                                                          ----------
                                                                                                       
            2006.................................................................................          104.125%
            2007.................................................................................          102.750%
            2008.................................................................................          101.375%
            2009 and thereafter..................................................................          100.000%


Selection and Notice.

     In the event that less than all of the notes are to be redeemed at any
time, selection of such notes, or any portion thereof that is an integral
multiple of $1,000, for redemption will be made by the Trustee from the notes
outstanding not previously called for redemption, or otherwise purchased by the
Company, on a pro rata basis, by lot or by such method as the Trustee shall deem
fair and appropriate; provided, however, that no note with a principal amount of
$1,000 or less shall be redeemed in part. Notice of redemption shall be mailed
by first-class mail at least 30 but not more than 60 days before the redemption
date to each Holder of notes to be redeemed at its registered address. If any
note is to be redeemed in part only, the notice of redemption that relates to
such note shall state the portion of the principal amount thereof to be
redeemed. Another note in a principal amount equal to the unredeemed portion
thereof will be issued in the name of the Holder thereof upon cancellation of
the original note. On and after the redemption date, interest will cease to
accrue on the notes or portions thereof called for redemption and accepted for
payment.

Offers to Purchase.

     As described below:

(1)  upon the occurrence of a Change of Control, the Company is obligated to
     make an offer to purchase all of the notes then outstanding at a purchase
     price equal to 101% of the principal amount thereof, together with accrued
     and unpaid interest, if any, to the date of purchase and

(2)  upon the occurrence of an Asset Sale, the Company may be obligated to make
     offers to purchase notes with a portion of the Net Cash Proceeds of such
     Asset Sale at a purchase price equal to 100% of the principal amount
     thereof, together with accrued and unpaid interest, if any, to the date of
     purchase.

     See "-- Certain Covenants; Change of Control" and "-- Limitation on
Disposition of Proceeds of Asset Sales."

Subordination

     Payments of and distributions on or with respect to the Note Obligations
are subordinated, to the extent set forth in the Indenture, in right of payment
to the prior payment in full in cash or Cash Equivalents of all existing and
future Senior Indebtedness, which includes, without limitation, all Credit
Agreement Obligations of the Company. The

                                       34


notes rank prior in right of payment only to other Indebtedness of the Company
which is, by its terms, subordinated in right of payment to the notes. In
addition, the Note Obligations are effectively subordinated to all creditors of
the Company's Subsidiaries, including trade creditors. See "Risk Factors -- The
right to receive payments on the notes is junior to our senior debt; The notes
are structurally subordinated to obligations of our subsidiaries."

     In the event of:

(1)  any insolvency or bankruptcy case or proceeding, or any receivership,
     liquidation, reorganization or other similar case or proceeding in
     connection therewith, relating to the Company (or its creditors, as such)
     or its properties and assets, or

(2)  any liquidation, dissolution or other winding-up of the Company, whether
     voluntary or involuntary, or

(3)  any assignment for the benefit of creditors or other marshaling of assets
     or liabilities of the Company

all Senior Indebtedness of the Company must be paid in full in cash or Cash
Equivalents before any direct or indirect payment or distribution, whether in
cash, property or securities (excluding certain permitted equity and
subordinated debt securities referred to in the Indenture as "Permitted Junior
Securities"), is made on account of the Note Obligations. In the event that,
notwithstanding the foregoing, the Trustee or the Holder of any note receives
any payment or distribution of properties or assets of the Company of any kind
or character, whether in cash, property or securities, by set-off or otherwise,
in respect of Note Obligations before all Senior Indebtedness is paid or
provided for in full in cash or Cash Equivalents, then the Trustee or the
Holders of notes receiving any such payment or distribution, other than a
payment or distribution in the form of Permitted Junior Securities, will be
required to pay or deliver such payment or distribution forthwith to the trustee
in bankruptcy, receiver, liquidating trustee, custodian, assignee, agent or
other person making payment or distribution of assets of the Company for
application to the payment of all Senior Indebtedness remaining unpaid, to the
extent necessary to pay all Senior Indebtedness in full.

     During the continuance of any default in the payment when due, whether at
Stated Maturity, upon scheduled repayment, upon acceleration or otherwise, of
principal of or premium, if any, or interest on, or of unreimbursed amounts
under drawn letters of credit or fees relating to letters of credit
constituting, any Designated Senior Indebtedness (a "Payment Default"), no
direct or indirect payment or distribution by or on behalf of the Company of any
kind or character shall be made on account of the Note Obligations or any
obligation under any Subsidiary Guarantee unless and until such default has been
cured or waived or has ceased to exist or such Designated Senior Indebtedness
shall have been discharged or paid in full in cash or Cash Equivalents.

     In addition, during the continuance of any default other than a Payment
Default with respect to any Designated Senior Indebtedness pursuant to which the
maturity thereof may then be accelerated (a "Non-payment Default"), after
receipt by the Trustee from the holders, or their representative, of such
Designated Senior Indebtedness of a written notice of such Non-payment Default,
no payment or distribution of any kind or character may be made by the Company
on account of the Note Obligations for the period specified below (the "Payment
Blockage Period").

     The Payment Blockage Period shall commence upon the receipt of notice of a
Non-payment Default by the Trustee from the holders (or their representative) of
Designated Senior Indebtedness stating that such notice is a payment blockage
notice pursuant to the Indenture and shall end on the earliest to occur of the
following events:

(1)  179 days shall have elapsed since the receipt by the Trustee of such
     notice;

(2)  the date, as set forth in a written notice to the Company or the Trustee
     from the holders, or their representative, of the Designated Senior
     Indebtedness initiating such Payment Blockage Period, on which such default
     is cured or waived or ceases to exist (provided, that no other Payment
     Default or Non- payment Default has occurred or is then continuing after
     giving effect to such cure or waiver);

(3)  the date on which such Designated Senior Indebtedness is discharged or paid
     in full in cash or Cash Equivalents; and

(4)  the date, as set forth in a written notice to the Company or the Trustee
     from the holders, or their representative, of the Designated Senior
     Indebtedness initiating such Payment Blockage Period, on which such Payment
     Blockage

                                       35


     Period shall have been terminated by written notice to the Company or the
     Trustee from the holders, or their representative, of Designated Senior
     Indebtedness initiating such Payment Blockage Period, after which the
     Company, subject to the subordination provisions set forth above and the
     existence of another Payment Default, shall promptly resume making any and
     all required payments in respect of the notes, including any missed
     payments.

     Only one Payment Blockage Period with respect to the notes may be commenced
within any 360 consecutive day period. No Non-payment Default with respect to
Designated Senior Indebtedness that existed or was continuing on the date of the
commencement of any Payment Blockage Period with respect to the Designated
Senior Indebtedness initiating such Payment Blockage Period will be, or can be,
made the basis for the commencement of a second Payment Blockage Period, whether
or not within a period of 360 consecutive days, unless such default has been
cured or waived for a period of not less than 90 consecutive days (it being
acknowledged that any subsequent action, or any breach of any financial covenant
for a period commencing after the date of commencement of such Payment Blockage
Period, that, in either case, would give rise to a Non-payment Default pursuant
to any provision under which a Non-payment Default previously existed or was
continuing shall constitute a new Non-payment Default for this purpose;
provided, however, that, in the case of a breach of a particular financial
covenant, the Company shall have been in compliance for at least one full 90
consecutive day period commencing after the date of commencement of such Payment
Blockage Period). In no event will a Payment Blockage Period extend beyond 179
days from the date of the receipt by the Trustee of the notice, and there must
be a 181 consecutive day period in any 360-day period during which no Payment
Blockage Period is in effect. In the event that, notwithstanding the foregoing,
the Company makes any payment or distribution to the Trustee or the Holder of
any note prohibited by the subordination provision of the Indenture, then such
payment or distribution will be required to be paid over and delivered forthwith
to the holders, or their representative, of Designated Senior Indebtedness.

     If the Company fails to make any payment on the notes when due or within
any applicable grace period, whether or not on account of the payment blockage
provisions referred to above, such failure will constitute an Event of Default
under the Indenture and will enable the Holders of the notes to accelerate the
maturity thereof. See "-- Events of Default."

     By reason of such subordination, in the event of liquidation, receivership,
reorganization or insolvency, creditors of the Company who are holders of Senior
Indebtedness may recover more, ratably, than the Holders of the notes, and funds
which would be otherwise payable to the Holders of the notes will be paid to the
holders of the Senior Indebtedness to the extent necessary to pay the Senior
Indebtedness in full, and the Company may be unable to meet its obligations in
full with respect to the notes.

     As of April 10, 2001, after giving effect to the sale of the outstanding
notes and the application of the net proceeds therefrom, the aggregate amount of
outstanding Senior Indebtedness was $141 million. Although the Indenture
contains limitations on the amount of additional Indebtedness that the Company
and the Restricted Subsidiaries may incur, the amounts of such Indebtedness
could be substantial and, in any case, such Indebtedness may be Senior
Indebtedness or Indebtedness of Subsidiaries to which the notes are
subordinated. The Indenture prohibits the incurrence by the Company of
Indebtedness that is contractually subordinated in right of payment to any
Senior Indebtedness of the Company and senior in right of payment to the notes.
Currently, the aggregate amount of outstanding Indebtedness of the Company that
is:

(1)  contractually subordinated in right of payment to the notes is $265,000,000
     and

(2)  pari passu in right of payment with the notes is $250,000,000.

Possible Subsidiary Guarantees of the Notes

     If the Company's existing or future Restricted Subsidiaries guarantee any
other Indebtedness of the Company, they will be required by the terms of the
Indenture to jointly and severally guarantee the notes on a senior subordinated
basis. See "-- Certain Covenants; Limitations on Non-Guarantor Restricted
Subsidiaries." At the date hereof, no Subsidiary of the Company has an
outstanding guarantee of any Indebtedness of the Company, and the

                                       36


Company does not intend to cause any Subsidiary to guarantee any such
Indebtedness in the future, thus requiring it to issue a Subsidiary Guarantee.

     Any Subsidiary that issues a Subsidiary Guarantee is herein called a
Subsidiary Guarantor. Each Subsidiary Guarantor will guarantee, jointly and
severally, to each Holder of Notes and the Trustee, the full and prompt
performance of the Company's obligations under the Indenture and the notes,
including the payment of principal of (or premium, if any, on) and interest on
the notes pursuant to its Subsidiary Guarantee. The Subsidiary Guarantees will
be subordinated to Guarantor Senior Indebtedness of the Subsidiary Guarantors to
the same extent and in the same manner as the notes are subordinated to Senior
Indebtedness.

     The obligations of each Subsidiary Guarantor will be limited to the maximum
amount as will, after giving effect to all other contingent and fixed
liabilities, including, but not limited to, Guarantor Senior Indebtedness, of
such Subsidiary Guarantor and after giving effect to any collections from or
payments made by or on behalf of any other Subsidiary Guarantor in respect of
the obligations of such other Subsidiary Guarantor under its Subsidiary
Guarantee or pursuant to its contribution obligations under the Indenture,
result in the obligations of such Subsidiary Guarantor under the Subsidiary
Guarantee not constituting a fraudulent conveyance or fraudulent transfer under
federal or state law. Each Subsidiary Guarantor that makes a payment or
distribution under a Subsidiary Guarantee shall be entitled to a contribution
from each other Subsidiary Guarantor, if any, in a pro rata amount based on the
Adjusted Net Assets (as defined in the Indenture) of each Subsidiary Guarantor.

     Each Subsidiary Guarantor may consolidate with or merge into or sell,
assign, convey, transfer, lease or otherwise dispose of its properties and
assets substantially as an entirety (or any portion thereof) to the Company or
another Subsidiary Guarantor without limitation, except to the extent any such
transaction is subject to the covenants described below under the caption "--
Merger, Consolidation and Sale of Assets." Each Subsidiary Guarantor may
consolidate with or merge into or sell, assign, convey, transfer, lease or
otherwise dispose of its properties and assets substantially as an entirety in
one transaction or series of related transactions to a Person other than the
Company or another Subsidiary Guarantor, whether or not affiliated with the
Subsidiary Guarantor; provided, that:

(1)  in the case of a merger or consolidation, if the surviving Person is not
     the Subsidiary Guarantor, such surviving Person or, in the case of a sale,
     assignment, conveyance, transfer, lease or other disposition, the
     transferee Person agrees to assume such Subsidiary Guarantor's Subsidiary
     Guarantee and all its obligations pursuant to the Indenture, except to the
     extent that the following paragraph would result in the release of such
     Subsidiary Guarantee and

(2)  such transaction does not:

     (a) violate any of the covenants described below under the caption "--
         Certain Covenants" or in the Indenture or

     (b) result in a Default or Event of Default immediately thereafter.

     The Subsidiary Guarantee of any Restricted Subsidiary may be released upon
the terms and subject to the conditions described under paragraph (2) of the
caption "-- Certain Covenants -- Limitation on Non-Guarantor Restricted
Subsidiaries." Each Subsidiary Guarantor that is designated as an Unrestricted
Subsidiary in accordance with the Indenture shall be released from its
Subsidiary Guarantee and related obligations set forth in the Indenture for so
long as it remains an Unrestricted Subsidiary.

Certain Covenants

     The Indenture contains, among others, the covenants described below. Many
of the covenants will be suspended if an Investment Grade Rating is achieved, as
described below under "--Suspension of Certain Covenants When Notes are Rated
Investment Grade."

Limitation on Indebtedness.

     Neither the Company nor any Restricted Subsidiary will create, incur,
issue, assume, guarantee or in any manner become directly or indirectly liable
for the payment of (collectively "incur") any Indebtedness, including any

                                       37


Acquired Indebtedness, other than Permitted Indebtedness and Permitted
Subsidiary Indebtedness, as the case may be; provided, however, that the Company
and its Restricted Subsidiaries that are Subsidiary Guarantors may incur
additional Indebtedness if:

(1)  the Company's Consolidated Fixed Charge Coverage Ratio for the four full
     fiscal quarters immediately preceding the incurrence of such Indebtedness
     (and for which financial statements are available), taken as one period (at
     the time of such incurrence, after giving pro forma effect to: (a) the
     incurrence of such Indebtedness and, if applicable, the application of the
     net proceeds therefrom as if such Indebtedness had been incurred and the
     application of such proceeds had occurred at the beginning of such
     four-quarter period; (b) the incurrence, repayment or retirement of any
     other Indebtedness, including Permitted Indebtedness and Permitted
     Subsidiary Indebtedness, by the Company or its Restricted Subsidiaries
     since the first day of such four-quarter period (including any other
     Indebtedness to be incurred concurrent with the incurrence of such
     Indebtedness) as if such Indebtedness had been incurred, repaid or retired
     at the beginning of such four-quarter period; and (c) notwithstanding
     clause (4) of the definition of Consolidated Net Income, the acquisition
     (whether by purchase, merger or otherwise) or disposition (whether by sale,
     merger or otherwise) of any Person acquired or disposed of by the Company
     or its Restricted Subsidiaries, as the case may be, since the first day of
     such four-quarter period, as if such acquisition or disposition had
     occurred at the beginning of such four-quarter period), would have been
     equal to at least 2.5 to 1.0 and

(2)  no Default or Event of Default would occur or be continuing.

Limitation on Restricted Payments.

     (1)  The Company will not, and will not permit any Restricted Subsidiary
to, directly or indirectly, take any of the following actions (unless such
action constitutes a Permitted Investment):

              (a) declare or pay any dividend on, or make any distribution to
         holders of, any shares of the Company's Capital Stock (other than
         dividends or distributions payable solely in shares of Qualified
         Capital Stock of the Company, options, warrants or other rights to
         purchase Qualified Capital Stock of the Company);

              (b) purchase, redeem or otherwise acquire or retire for value any
         Capital Stock of the Company or any Affiliate thereof (other than any
         Wholly Owned Restricted Subsidiary of the Company) or any options,
         warrants or other rights to acquire such Capital Stock; provided,
         however, that the Company may make any payment of the applicable
         redemption price in connection with a Qualified Redemption Transaction;

              (c) make any principal payment on or repurchase, redeem, defease
         or otherwise acquire or retire for value, prior to any scheduled
         principal payment, scheduled sinking fund payment or maturity, any Pari
         Passu Indebtedness or Subordinated Indebtedness, except in any case out
         of a Pari Passu Offer or a Net Proceeds Deficiency (each as defined in
         "-- Limitation on Disposition of Proceeds of Asset Sales") pursuant to
         the provisions of the Indenture described under the caption "--
         Limitation on Disposition of Proceeds of Asset Sales" and except upon a
         Change of Control or similar event required by the indenture or other
         agreement or instrument pursuant to which such Pari Passu Indebtedness
         or Subordinated Indebtedness was issued, provided the Company is then
         obligated to make a Change of Control Offer in compliance with the
         covenant described below under "-- Change of Control;" provided,
         however, that the Company may make any payment of the applicable
         redemption price in connection with a Qualified Redemption Transaction;

              (d) declare or pay any dividend on, or make any distribution to
         the holders of, any shares of Capital Stock of any Restricted
         Subsidiary of the Company (other than to the Company or any of its
         Wholly Owned Restricted Subsidiaries) or purchase, redeem or otherwise
         acquire or retire for value any Capital Stock of any Restricted
         Subsidiary (other than a Wholly Owned Restricted Subsidiary) or any
         options, warrants or other rights to acquire any such Capital Stock
         (other than with respect to any such Capital Stock held by the Company
         or any Wholly Owned Restricted Subsidiary of the Company);

              (e) make any Investment; or

                                       38


              (f) in connection with the acquisition of any property or asset by
         the Company or its Restricted Subsidiaries after the date of the
         Indenture, which property or asset would secure or be subject to any
         Production Payment obligations of the Company or its Restricted
         Subsidiaries, make any investment (of cash, property or other assets)
         in such property or asset so acquired in addition to the amount of
         Indebtedness, including Production Payment obligations, incurred by the
         Company or its Restricted Subsidiaries in connection with such
         acquisition;

(such payments or other actions described in, but not excluded from, clauses (a)
through (f) are collectively referred to as "Restricted Payments"), unless at
the time of and after giving effect to the proposed Restricted Payment (with the
amount of any such Restricted Payment, if other than cash, being the amount
determined by the Board of Directors, whose determination shall be conclusive
and evidenced by a resolution), (i) no Default or Event of Default shall have
occurred and be continuing, (ii) the Company could incur $1.00 of additional
Indebtedness (other than Permitted Indebtedness) in accordance with the covenant
described above under the caption "-- Limitation on Indebtedness" and (iii) the
aggregate amount of all Restricted Payments declared or made after the date of
the Indenture shall not exceed the sum (without duplication) of the following:

              (A) 50% of the aggregate Consolidated Net Income of the Company
         accrued on a cumulative basis during the period beginning April 1, 2001
         and ending on the last day of the Company's last fiscal quarter ending
         prior to the date of such proposed Restricted Payment (or, if such
         aggregate cumulative Consolidated Net Income shall be a loss, minus
         100% of such loss), plus

              (B) the aggregate net cash proceeds received after the date of the
         Indenture by the Company as capital contributions to the Company (other
         than from any Restricted Subsidiary), plus

              (C) the aggregate net cash proceeds received after the date of the
         Indenture by the Company from the issuance or sale (other than to any
         of its Restricted Subsidiaries) of shares of Qualified Capital Stock of
         the Company or any options, warrants or rights to purchase such shares
         of Qualified Capital Stock of the Company, plus

              (D) the aggregate net cash proceeds received after the date of the
         Indenture by the Company (other than from any of its Restricted
         Subsidiaries) upon the exercise of any options, warrants or rights to
         purchase shares of Qualified Capital Stock of the Company, plus

              (E) the aggregate net cash proceeds received after the date of the
         Indenture by the Company from the issuance or sale (other than to any
         of its Restricted Subsidiaries) of debt securities (including
         Redeemable Capital Stock) that have been converted into or exchanged
         for Qualified Capital Stock of the Company to the extent such debt
         securities were originally sold for cash, plus

              (F) to the extent not reflected in Consolidated Net Income, the
         aggregate net cash proceeds received after the date of the Indenture by
         the Company from an Asset Sale involving assets originally acquired
         through the issuance or sale (other than to any of its Restricted
         Subsidiaries) of Qualified Capital Stock or debt securities (including
         Redeemable Capital Stock) that have been converted into or exchanged
         for Qualified Capital Stock of the Company, plus

              (G) an amount equal to the aggregate liquidation preference of the
         Company's 6 1/2% Cumulative Quarterly Income Convertible Preferred
         Securities, Series A, upon the conversion or exchange of such
         securities for Qualified Capital Stock of the Company, plus

              (H) to the extent not otherwise included in the Company's
         Consolidated Net Income, the net reduction in Investments in Affiliates
         and Unrestricted Subsidiaries resulting from the payments of interest
         on Indebtedness, dividends, repayments of loans or advances, or other
         transfers of assets, in each case to the Company or a Restricted
         Subsidiary after the date of the Indenture from any Affiliate or
         Unrestricted Subsidiary or from the redesignation of an Unrestricted
         Subsidiary as a Restricted Subsidiary (valued in each case as provided
         in the definition of "Investment"), not to exceed in the case of any
         Affiliate or Unrestricted Subsidiary the total amount of Investments
         (other than Permitted Investments) in such Affiliate or Unrestricted
         Subsidiary made by the Company and its Restricted Subsidiaries in such
         Affiliate or Unrestricted Subsidiary after the date of the Indenture,
         plus

                                       39


              (I) $25,000,000.

     (2)  Notwithstanding paragraph (1) above, the Company and its Restricted
Subsidiaries may take the following actions so long as (in the case of clauses
(b), (c) and (d) below) no Default or Event of Default shall have occurred and
be continuing:

              (a) the payment of any dividend within 60 days after the date of
         declaration thereof, if at such declaration date such declaration
         complied with the provisions of paragraph (1) above (and such payment
         shall be deemed to have been paid on such date of declaration for
         purposes of any calculation required by the provisions of paragraph (1)
         above);

              (b) the repurchase, redemption or other acquisition or retirement
         of any shares of any class of Capital Stock of the Company or any
         Restricted Subsidiary, in exchange for, or out of the aggregate net
         cash proceeds of, a substantially concurrent issue and sale (other than
         to a Restricted Subsidiary) of shares of Qualified Capital Stock of the
         Company;

              (c) the purchase, redemption, repayment, defeasance or other
         acquisition or retirement for value of any Subordinated Indebtedness
         (other than Redeemable Capital Stock) in exchange for or out of the
         aggregate net cash proceeds of a substantially concurrent issue and
         sale (other than to a Restricted Subsidiary) of shares of Qualified
         Capital Stock of the Company;

              (d) the purchase, redemption, repayment, defeasance or other
         acquisition or retirement for value of Subordinated Indebtedness (other
         than Redeemable Capital Stock) in exchange for, or out of the aggregate
         net cash proceeds of, a substantially concurrent incurrence (other than
         to a Restricted Subsidiary) of Subordinated Indebtedness of the Company
         so long as (i) the principal amount of such new Indebtedness does not
         exceed the principal amount (or, if such Subordinated Indebtedness
         being refinanced provides for an amount less than the principal amount
         thereof to be due and payable upon a declaration of acceleration
         thereof, such lesser amount as of the date of determination) of the
         Subordinated Indebtedness being so purchased, redeemed, repaid,
         defeased, acquired or retired, plus the amount of any premium required
         to be paid in connection with such refinancing pursuant to the terms of
         the Subordinated Indebtedness refinanced or the amount of any premium
         reasonably determined by the Company as necessary to accomplish such
         refinancing, plus the amount of fees and expenses of the Company
         incurred in connection with such refinancing, (ii) such new
         Subordinated Indebtedness is subordinated to the notes at least to the
         same extent as such Subordinated Indebtedness so purchased, redeemed,
         repaid, defeased, acquired or retired, (iii) such new Subordinated
         Indebtedness has an Average Life to Stated Maturity that is longer than
         the Average Life to Stated Maturity of the notes and such new
         Subordinated Indebtedness has a Stated Maturity for its final scheduled
         principal payment that is at least 91 days later than the Stated
         Maturity for the final scheduled principal payment of the notes; and

              (e) repurchases, acquisitions or retirements of shares of
         Qualified Capital Stock of the Company deemed to occur upon the
         exercise of stock options or similar rights issued under employee
         benefit plans of the Company if such shares represent all or a portion
         of the exercise price or are surrendered in connection with satisfying
         any Federal income tax obligation or are repurchased or acquired to
         fulfill obligations of the Company or any Restricted Subsidiary under
         employee compensation or other benefit arrangements entered into or
         provided for in the ordinary course of business.

     The actions described in clauses (a), (b) and (c) of this paragraph (2)
shall be Restricted Payments that shall be permitted to be taken in accordance
with this paragraph (2) but shall reduce the amount that would otherwise be
available for Restricted Payments under clause (c) of paragraph (1) (provided,
that any dividend paid pursuant to clause (a) of this paragraph (2) shall reduce
the amount that would otherwise be available under clause (c) of paragraph (1)
when declared, but not also when subsequently paid pursuant to such clause (a)),
and the actions described in clauses (d) and (e) of this paragraph (2) shall be
Restricted Payments that shall be permitted to be taken in accordance with this
paragraph and shall not reduce the amount that would otherwise be available for
Restricted Payments under clause (c) of paragraph (1).

                                       40


     (3)   In computing Consolidated Net Income of the Company under paragraph
           (1) above:

              (a) the Company shall use audited financial statements for the
         portions of the relevant period for which audited financial statements
         are available on the date of determination and unaudited financial
         statements and other current financial data based on the books and
         records of the Company for the remaining portion of such period and

              (b) the Company shall be permitted to rely in good faith on the
         financial statements and other financial data derived from the books
         and records of the Company that are available on the date of
         determination.

If the Company makes a Restricted Payment which, at the time of the making of
such Restricted Payment, would in the good faith determination of the Company be
permitted under the requirements of the Indenture, such Restricted Payment shall
be deemed to have been made in compliance with the Indenture notwithstanding any
subsequent adjustments made in good faith to the Company's financial statements
affecting Consolidated Net Income of the Company for any period.

Limitation on Issuances and Sales of Restricted Subsidiary Capital Stock.

     The Company:
(1)  will not permit any Restricted Subsidiary to issue any Preferred Stock
     (other than to the Company or a Wholly Owned Restricted Subsidiary) and

(2)  will not permit any Person (other than the Company and/or one or more
     Wholly Owned Restricted Subsidiaries) to own any Capital Stock of any
     Restricted Subsidiary;

provided, however, that this covenant shall not prohibit:

(1)  the issuance and sale of all, but not less than all, of the issued and
     outstanding Capital Stock of any Restricted Subsidiary owned by the Company
     or any of its Restricted Subsidiaries in compliance with the other
     provisions of the Indenture,

(2)  the ownership by directors of directors' qualifying shares or by other
     Persons of other shares to the extent mandated by applicable law,

(3)  the ownership by any Person of Capital Stock of a Restricted Subsidiary
     that was owned by a Person at the time such Restricted Subsidiary became a
     Restricted Subsidiary or acquired by a Person in connection with the
     formation of the Restricted Subsidiary (including, in each case, any
     Capital Stock issued as a result of a stock split, a dividend of shares of
     Capital Stock to holders of such Capital Stock, a recapitalization
     affecting such Capital Stock or similar event) and

(4)  the ownership by any Person of Capital Stock of any Foreign Subsidiary so
     long as none of the Capital Stock of that Subsidiary has been issued in a
     public offering.

Limitation on Transactions with Affiliates.

     The Company will not, and will not permit any Restricted Subsidiary to,
directly or indirectly, enter into any transaction or series of related
transactions (including, without limitation, the sale, purchase, exchange or
lease of assets, property or the rendering of any services) with, or for the
benefit of, any Affiliate of the Company other than a Restricted Subsidiary or
B8/32 Partners (each, other than a Restricted Subsidiary and B8/32 Partners,
being an "Interested Person"), unless:

(1)  such transaction or series of transactions is on terms that are no less
     favorable to the Company or such Restricted Subsidiary, as the case may be,
     than those that would be available in a comparable arm's length transaction
     with unrelated third parties who are not Interested Persons, or, in the
     event no comparable transaction with an unrelated third party who is not an
     Interested Person is available, on terms that are fair from a financial
     point of view to the Company or such Restricted Subsidiary, as the case may
     be,

                                       41


(2)  with respect to any one transaction or series of related transactions
     involving aggregate payments in excess of $15,000,000, the Company delivers
     an Officers' Certificate to the Trustee certifying that such transaction or
     series of transactions complies with clause (1) above and such transaction
     or series of transactions has been approved by the Board of Directors and

(3)  with respect to any one transaction or series of related transactions
     involving aggregate payments in excess of $30,000,000, the Officers'
     Certificate referred to in clause (2) above also includes a certification
     that such transaction or series of transactions has been approved by a
     majority of the Disinterested Directors (either of the full Board of
     Directors or, in the case of action by a committee thereof, of such
     committee) or, in the event there are no such Disinterested Directors, that
     the Company has obtained a written opinion from an independent nationally
     recognized investment banking firm or appraisal firm, in either case
     specializing or having a specialty in the type and subject matter of the
     transaction or series of related transactions at issue, which opinion shall
     be to the effect set forth in clause (1) above;

provided, however, that this covenant will not restrict the Company from:

(1)  paying reasonable and customary regular compensation and fees to directors
     of the Company who are not employees of the Company or any Restricted
     Subsidiary,

(2)  paying dividends on, or making distributions with respect to, shares of
     Capital Stock of the Company on a pro rata basis to the extent permitted by
     the covenant described above under the caption "-- Limitation on Restricted
     Payments,"

(3)  making Restricted Payments that are permitted by the provisions of the
     Indenture described above under the caption "-- Limitation on Restricted
     Payments,"

(4)  making loans or advances to officers, directors and employees of the
     Company or any Restricted Subsidiary in the ordinary course of business and
     consistent with customary practices in the Oil and Gas Business in an
     aggregate amount not to exceed $1,000,000 outstanding at any one time,

(5)  making any indemnification or similar payment to any director or officer
     (a) in accordance with the corporate charter or bylaws of the Company or
     any Restricted Subsidiary, (b) under any agreement or (c) under applicable
     law and

(6)  fulfilling obligations of the Company or any Restricted Subsidiary under
     employee compensation and other benefit arrangements entered into or
     provided for in the ordinary course of business.

Limitation on Liens.

     The Company will not, and will not permit any Restricted Subsidiary to,
directly or indirectly, create, incur, assume, affirm or suffer to exist or
become effective any Lien of any kind, except for Permitted Liens, on or with
respect to any of its property or assets (including any intercompany notes),
whether owned at the date of the Indenture or thereafter acquired, or any
income, profits or proceeds therefrom, or assign or otherwise convey any right
to receive income thereon, unless:

(1)  in the case of any Lien securing Subordinated Indebtedness, the notes are
     secured by a Lien on such property, assets or proceeds that is senior in
     priority to such Lien and

(2)  in the case of any other Lien, the notes are directly secured equally and
     ratably with the obligation or liability secured by such Lien.

The incurrence of additional secured Indebtedness by the Company or any
Restricted Subsidiary is subject to further limitations on the incurrence of
Indebtedness as described above under the caption "-- Limitation on
Indebtedness."

                                       42


Change of Control.

     Upon the occurrence of a Change of Control, the Company shall be obligated
to make an offer to purchase all of the notes then outstanding (a "Change of
Control Offer"), and shall purchase, on a business day (the "Change of Control
Purchase Date") not more than 75 nor less than 30 days following the Change of
Control, all of the notes then outstanding that are validly tendered pursuant to
such Change of Control Offer at a purchase price (the "Change of Control
Purchase Price") equal to 101% of the principal amount thereof, plus accrued and
unpaid interest, if any, to the Change of Control Purchase Date. The Change of
Control Offer is required to remain open for at least 20 Business Days and until
the close of business on the Change of Control Purchase Date.

     In order to effect such Change of Control Offer, the Company shall, not
later than the 30th day after the Change of Control, mail to each Holder of a
note a notice of the Change of Control Offer, which notice shall govern the
terms of the Change of Control Offer and shall state, among other things, the
procedures that Holders of the notes must follow to accept the Change of Control
Offer.

     If a Change of Control Offer is made, there can be no assurance that the
Company will have available funds sufficient to pay the Change of Control
Purchase Price for all of the notes delivered by Holders of the notes seeking to
accept the Change of Control Offer. If on a Change of Control Purchase Date the
Company does not have available funds sufficient to pay the Change of Control
Purchase Price or is prohibited from purchasing the notes, an Event of Default
will occur under the Indenture.

     Moreover, the definition of Change of Control includes a phrase relating to
the sale or other disposition of the Company's properties and assets
"substantially as an entirety." Although there is a developing body of case law
interpreting phrases such as "substantially as an entirety," there is no precise
established definition of such phrases under applicable law. Accordingly, the
ability of a Holder of the notes to require the Company to repurchase such notes
as a result of a sale or other disposition of less than all of the properties
and assets of the Company on a consolidated basis to another Person or related
group of Persons may be uncertain.

     The Company will not be required to make a Change of Control Offer upon a
Change of Control if a third party makes the Change of Control Offer at the same
purchase price, at the same times and otherwise in substantial compliance with
the requirements applicable to a Change of Control Offer made by the Company and
purchases all notes validly tendered and not withdrawn under such Change of
Control Offer.

     The Company intends to comply with Rule 14e-1 under the Exchange Act and
any other securities laws and regulations thereunder, if applicable, in the
event that a Change of Control occurs and the Company is required to purchase
notes as described above. The existence of a Holder's right to require, subject
to certain conditions, the Company to repurchase its notes upon a Change of
Control may deter a third party from acquiring the Company in a transaction that
constitutes, or results in, a Change of Control.

Limitation on Disposition of Proceeds of Asset Sales.

     (1) The Company will not, and will not permit any Restricted Subsidiary to,
engage in any Asset Sale unless (a) the Company or such Restricted Subsidiary,
as the case may be, receives consideration at the time of such Asset Sale at
least equal to the fair market value of the assets and properties sold or
otherwise disposed of pursuant to the Asset Sale (as determined by the Board of
Directors, whose determination shall be conclusive and evidenced by a
resolution) and (b) at least 75% of the consideration received by the Company or
the Restricted Subsidiary, as the case may be, in respect of such Asset Sale
consists of cash, Cash Equivalents and/or the assumption by the purchaser of
liabilities of the Company (other than liabilities of the Company that are by
their terms subordinated to the notes) or any Restricted Subsidiary as a result
of which the Company and its remaining Restricted Subsidiaries are no longer
liable.

     (2) If the Company or any Restricted Subsidiary engages in an Asset Sale,
the Company may either: (a) apply the Net Cash Proceeds thereof to reduce Senior
Indebtedness, to reduce Guarantor Senior Indebtedness or to reduce Indebtedness
of any Restricted Subsidiary incurred pursuant to clause (13) of the definition
of Permitted Subsidiary Indebtedness, provided, if any such Senior Indebtedness,
Guarantor Senior Indebtedness or Permitted Subsidiary Indebtedness has been
incurred under any revolving credit facility, that the related commitment to
lend or the amount available to be reborrowed under such facility is also
reduced, or (b) invest all or any part of the Net Cash Proceeds

                                       43


thereof, within 365 days after such Asset Sale, in properties and assets which
replace the properties and assets that were the subject of the Asset Sale or in
properties and assets that will be used in the business of the Company or its
Restricted Subsidiaries, as the case may be ("Replacement Assets"). The amount
of such Net Cash Proceeds not applied or invested as provided in this paragraph
constitutes "Excess Proceeds."

     (3)  When the aggregate amount of Excess Proceeds equals or exceeds
$20,000,000, the Company shall make an offer to purchase, from all Holders of
the notes and any then outstanding Pari Passu Indebtedness required to be
repurchased or repaid on a permanent basis in connection with an Asset Sale, an
aggregate principal amount of notes and any then outstanding Pari Passu
Indebtedness equal to such Excess Proceeds as follows:

              (a)  (i) the Company shall make an offer to purchase (a "Net
          Proceeds Offer") from all Holders of the notes in accordance with the
          procedures set forth in the Indenture the maximum principal amount
          (expressed as a multiple of $1,000) of notes that may be purchased out
          of an amount (the "Payment Amount") equal to the product of such
          Excess Proceeds, multiplied by a fraction, the numerator of which is
          the outstanding principal amount of the notes and the denominator of
          which is the sum of the outstanding principal amount of the notes and
          such Pari Passu Indebtedness, if any (subject to proration in the
          event such amount is less than the aggregate Offered Price (as defined
          below) of all notes tendered), and (ii) to the extent required by such
          Pari Passu Indebtedness and provided there is a permanent reduction in
          the principal amount of such Pari Passu Indebtedness, the Company
          shall make an offer to purchase Pari Passu Indebtedness (a "Pari Passu
          Offer") in an amount (the "Pari Passu Indebtedness Amount") equal to
          the excess of the Excess Proceeds over the Payment Amount.

              (b)  The offer price for the notes shall be payable in cash in an
          amount equal to 100% of the principal amount of the notes tendered
          pursuant to a Net Proceeds Offer, plus accrued and unpaid interest, if
          any, to the date such Net Proceeds Offer is consummated (the "Offered
          Price"), in accordance with the procedures set forth in the Indenture.
          To the extent that the aggregate Offered Price of the notes tendered
          pursuant to a Net Proceeds Offer is less than the Payment Amount
          relating thereto or the aggregate amount of the Pari Passu
          Indebtedness that is purchased or repaid pursuant to the Pari Passu
          Offer is less than the Pari Passu Indebtedness Amount (such shortfall
          constituting a "Net Proceeds Deficiency"), the Company may use such
          Net Proceeds Deficiency for general corporate purposes, subject to the
          limitations described above under the caption "-- Limitation on
          Restricted Payments."

              (c)  If the aggregate Offered Price of notes validly tendered and
          not withdrawn by Holders thereof exceeds the Payment Amount, notes to
          be purchased will be selected on a pro rata basis. Upon completion of
          such Net Proceeds Offer and Pari Passu Offer, the amount of Excess
          Proceeds shall be reset to zero.

The Company intends to comply with Rule 14e-1 under the Exchange Act, and any
other securities laws and regulations thereunder, if applicable, in the event
that an Asset Sale occurs and the Company is required to purchase notes as
described above.

     The Credit Agreement may prohibit the Company from purchasing any notes
from Excess Proceeds. Any future credit agreements or other agreements relating
to Senior Indebtedness to which the Company becomes a party may contain similar
restrictions. In the event a Net Proceeds Offer occurs at a time when the
Company is prohibited by the terms of any Senior Indebtedness from purchasing
the notes, the Company could seek the consent of the holders of such Senior
Indebtedness to the purchase or could attempt to refinance such Senior
Indebtedness. If the Company does not obtain such a consent or repay such Senior
Indebtedness, the Company may remain prohibited from purchasing the notes. In
such case, the Company's failure to purchase tendered notes would constitute an
Event of Default under the Indenture which would, in turn, constitute a default
under the Credit Agreement and possibly a default under other agreements
relating to Senior Indebtedness. In such circumstances, the subordination
provisions in the Indenture would likely restrict payments to the Holders of the
notes.

Limitation on Non-Guarantor Restricted Subsidiaries.

     (1)  The Company will not permit any Restricted Subsidiary that is not a
Subsidiary Guarantor to guarantee the payment of any Indebtedness of the Company
unless (a)(i) such Restricted Subsidiary simultaneously executes and delivers a
supplemental indenture to the Indenture providing for a Subsidiary Guarantee of
the notes by such Restricted Subsidiary which Subsidiary Guarantee will be
subordinated to Guarantor Senior Indebtedness (but no

                                       44


other Indebtedness) to the same extent that the notes are subordinated to Senior
Indebtedness and (ii), with respect to any guarantee of Subordinated
Indebtedness by a Restricted Subsidiary, any such guarantee shall be
subordinated to such Restricted Subsidiary's Subsidiary Guarantee at least to
the same extent as such Subordinated Indebtedness is subordinated to the notes;
(b) such Restricted Subsidiary waives, and agrees not in any manner whatsoever
to claim or take the benefit or advantage of, any rights of reimbursement,
indemnity or subrogation or any other rights against the Company or any other
Restricted Subsidiary as a result of any payment by such Restricted Subsidiary
under its Subsidiary Guarantee until such time as the obligations guaranteed
thereby are paid in full; and (c) such Restricted Subsidiary shall deliver to
the Trustee an Opinion of Counsel to the effect that such Subsidiary Guarantee
has been duly executed and authorized and constitutes a valid, binding and
enforceable obligation of such Restricted Subsidiary, except insofar as
enforcement thereof (i) may be limited by bankruptcy, insolvency or similar laws
(including, without limitation, all laws relating to fraudulent transfers and
fraudulent conveyances), (ii) is subject to general principles of equity and
(iii) any implied covenant of good faith or fair dealing.

     (2)  Notwithstanding the foregoing and the other provisions of the
Indenture, each Subsidiary Guarantee shall provide by its terms that it shall be
automatically and unconditionally released and discharged upon (a) (i) any sale,
exchange or transfer of all the Capital Stock in the applicable Subsidiary
Guarantor owned by the Company and any Restricted Subsidiary or (ii) any sale,
assignment, conveyance, transfer, lease or other disposition of the properties
and assets of such Subsidiary Guarantor substantially as an entirety, in each
case, in a single transaction or series of related transactions to any Person
that is not a Restricted Subsidiary (provided, that such transaction or series
of transactions is not prohibited by the Indenture), (b) the merger or
consolidation of such Subsidiary Guarantor with or into the Company or a
Restricted Subsidiary (provided, that, in the case of a merger into or
consolidation with a Restricted Subsidiary that is not then a Subsidiary
Guarantor, the surviving Restricted Subsidiary assumes the Subsidiary Guarantee
and that transaction or series of transactions is not prohibited by the
Indenture) or (c) the release or discharge of all guarantees by such Subsidiary
Guarantor of Indebtedness other than the Note Obligations, except a discharge or
release by or as a result of the payment of such Indebtedness by such Subsidiary
Guarantor pursuant to its Subsidiary Guarantee.

Limitation on Dividends and Other Payment Restrictions Affecting Restricted
Subsidiaries.

     The Company will not, and will not permit any Restricted Subsidiary to,
directly or indirectly, create or otherwise cause or suffer to exist or become
effective any consensual encumbrance or restriction of any kind on the ability
of any Restricted Subsidiary to:

(1)  pay dividends, in cash or otherwise, or make any other distributions on or
     in respect of its Capital Stock to the Company or any Restricted
     Subsidiary,

(2)  pay any Indebtedness owed to the Company or any Restricted Subsidiary,

(3)  make an Investment in the Company or any Restricted Subsidiary or

(4)  transfer any of its properties or assets to the Company or any Restricted
     Subsidiary;

except for such encumbrances or restrictions:

(a)  pursuant to any agreement in effect or entered into on the date of the
     Indenture,

(b)  pursuant to any agreement or other instrument of a Person acquired by the
     Company or any Restricted Subsidiary in existence at the time of such
     acquisition (but not created in contemplation thereof), which encumbrance
     or restriction is not applicable to any other Person, or the properties or
     assets of any other Person, other than the Person, or the property or
     assets of the Person, so acquired,

(c)  by reason of customary non-assignment or preferential purchase right
     provisions in leases, licenses and agreements entered into in the ordinary
     course of business,

(d)  pursuant to capital leases and purchase money obligations for property
     leased or acquired in the ordinary course of business that impose
     restrictions of the nature described in clause (4) above on the property so
     leased or acquired,

                                       45


(e)  pursuant to any merger agreements, stock purchase agreements, asset sale
     agreements and similar agreements limiting the transfer of properties and
     assets pending consummation of the subject transaction,

(f)  pursuant to Permitted Liens which are customary limitations on the transfer
     of collateral,

(g)  pursuant to applicable law,

(h)  pursuant to agreements among holders of Capital Stock of any Restricted
     Subsidiary of the Company requiring distributions in respect of such
     Capital Stock to be made pro rata based on the percentage of ownership in
     and/or contribution to such Restricted Subsidiary,

(i)  pursuant to typical cash management plans that provide for an orderly
     repatriation of funds designed to optimize after-tax cash flow and agreed
     to by all shareholders of a Foreign Subsidiary or

(j)  existing under any agreement that extends, renews, refinances or replaces
     the agreements containing the restrictions in the preceding clauses (a) and
     (b), provided, that the terms and conditions of any such restrictions are
     not materially less favorable to the Holders of the notes than those under
     or pursuant to the agreement evidencing the Indebtedness so extended,
     renewed, refinanced or replaced.

Limitation on Other Senior Subordinated Indebtedness.

     The Company will not incur, directly or indirectly, any Indebtedness which
is expressly subordinate or junior in right of payment in any respect to Senior
Indebtedness unless such Indebtedness ranks pari passu in right of payment with
the notes, or is expressly subordinated in right of payment to the notes.

Reports.

     The Company (and the Subsidiary Guarantors, if applicable) must file on a
timely basis with the SEC, to the extent such filings are accepted by the SEC
and whether or not the Company has a class of securities registered under the
Exchange Act, the annual reports, quarterly reports and other documents (in each
case without exhibits) that the Company would be required to file if it were
subject to Section 13 or 15(d) of the Exchange Act. The Company is (and any
future Subsidiary Guarantors will be) also required:

(1)  to file with the Trustee, and provide to each Holder of notes, without cost
     to such Holder, copies of such reports and documents within 15 days after
     the date on which the Company files such reports and documents with the SEC
     or the date on which the Company (and the Subsidiary Guarantors, if
     applicable) would be required to file such reports and documents if the
     Company (and the Subsidiary Guarantors, if applicable) were so required and

(2)  if filing such reports and documents with the SEC is not accepted by the
     SEC or is prohibited under the Exchange Act, to furnish at the Company's
     cost copies of such reports and documents to any Holder of notes promptly
     upon written request.

The Company is obligated to make available, upon request, to any Holder of notes
or prospective purchaser the information required by Rule 144A(d)(4) under the
Securities Act, during any period in which the Company is not subject to Section
13 or 15(d) of the Exchange Act and for so long as the transfer of any note is
restricted under the Securities Act.

Future Designation of Restricted and Unrestricted Subsidiaries.

     The preceding covenants, including calculation of financial ratios and the
determination of limitations on the incurrence of Indebtedness and Liens, may be
affected by the designation by the Company of any existing or future Subsidiary
of the Company as an Unrestricted Subsidiary. Generally, a Restricted Subsidiary
includes any Subsidiary of the Company, whether existing on or after the date of
the Indenture, unless the Subsidiary of the Company is designated as an
Unrestricted Subsidiary pursuant to the terms of the Indenture. The definition
of "Unrestricted Subsidiary" set forth below under the caption "-- Certain
Definitions" describes the circumstances under which a Subsidiary of the Company
may be designated as an Unrestricted Subsidiary by the Board of Directors.

Suspension of Certain Covenants When Notes are Rated Investment Grade.

     During any period that the Notes are rated Investment Grade, on notice by
the Company to the Trustee the covenants described above under the captions
"----Limitation on Indebtedness," "----Limitation on Restricted Payments,"
"----Limitation on Issuances and Sales of Restricted Subsidiary Capital Stock,"
"----Limitation on

                                       46


     Transactions with Affiliates," "----Limitation on Disposition of Proceeds
of Asset Sales," "----Limitation on Non-Guarantor Restricted Subsidiaries" and
"----Limitation on Dividends and Other Payment Restrictions Affecting Restricted
Subsidiaries" will be suspended and will not, during that period, apply to the
Company and its Restricted Subsidiaries. As a result, during any such period the
Notes will lose the full covenant protection initially provided under the
Indenture. No action taken or inaction during any period when the covenants are
suspended that complies with the then applicable covenants will constitute a
Default or an Event of Default should the suspended covenants be subsequently
reinstated.

Consolidation, Merger, Etc.

     The Company will not, in any single transaction or series of related
transactions, consolidate or merge with or into any other Person, or sell,
assign, convey, transfer, lease or otherwise dispose of the properties and
assets of the Company and its Restricted Subsidiaries substantially as an
entirety on a consolidated basis to any Person, and the Company will not permit
any Restricted Subsidiary to enter into any transaction or series of related
transactions if such transaction or series of transactions would result in a
sale, assignment, conveyance, transfer, lease or other disposition of the
properties and assets of the Company and its Restricted Subsidiaries
substantially as an entirety on a consolidated basis to any Person, unless at
the time and after giving effect thereto:

(1)  either (a) if the transaction or series of related transactions is a merger
     or consolidation, the Company shall be the surviving Person of such merger
     or consolidation, or (b) the Person, if other than the Company, formed by
     such consolidation or into which the Company or such Restricted Subsidiary
     is merged or to which the properties and assets of the Company or such
     Restricted Subsidiary, as the case may be, are sold, assigned, conveyed,
     transferred, leased or otherwise disposed of (any such surviving Person or
     transferee Person being the "Surviving Entity") shall be a corporation
     organized and existing under the laws of the United States of America, any
     state thereof or the District of Columbia and shall, in either case,
     expressly assume by a supplemental indenture to the Indenture executed and
     delivered to the Trustee, in form satisfactory to the Trustee, all the
     obligations of the Company under the notes and the Indenture, and, in each
     case, the Indenture shall remain in full force and effect;

(2)  immediately before and immediately after giving effect to such transaction
     or series of transactions on a pro forma basis (and treating any
     Indebtedness not previously an obligation of Company or any of its
     Restricted Subsidiaries in connection with or as a result of such
     transaction or series of transactions as having been incurred at the time
     of such transaction or series of transactions), no Default or Event of
     Default shall have occurred and be continuing;

(3)  except in the case of the consolidation or merger of any Restricted
     Subsidiary with or into the Company, immediately after giving effect to
     such transaction or series of transactions on a pro forma basis, the
     Consolidated Net Worth of the Company (or the Surviving Entity if the
     Company is not the continuing obligor under the Indenture) is at least
     equal to the Consolidated Net Worth of the Company immediately before such
     transaction or series of transactions;

(4)  except in the case of the consolidation or merger of (a) any Restricted
     Subsidiary with or into the Company or any Wholly Owned Restricted
     Subsidiary or (b) the Company with or into any Person that has no
     Indebtedness outstanding, immediately before and immediately after giving
     effect to such transaction or series of transactions on a pro forma basis
     (on the assumption that the transaction or series of transactions occurred
     on the first day of the period of four fiscal quarters ending immediately
     prior to the consummation of such transaction or series of transactions,
     with the appropriate adjustments with respect to such transaction or series
     transactions being included in such pro forma calculation), the Company, or
     the Surviving Entity if the Company is not the continuing obligor under the
     Indenture, could incur $1.00 of additional Indebtedness, other than
     Permitted Indebtedness, pursuant to the covenant described above under the
     caption "-- Limitation on Indebtedness;"

                                       47


(5)  each Subsidiary Guarantor, unless it is the other party to the transactions
     or series of transactions described above, shall have by supplemental
     indenture to the Indenture confirmed that its Subsidiary Guarantee shall
     apply to such Person's obligations under the Indenture and the notes; and

(6)  if any of the properties or assets of the Company or any Restricted
     Subsidiary would upon such transaction or series of transactions become
     subject to any Lien, other than a Permitted Lien, the creation and
     imposition of such Lien shall have been in compliance with the covenant
     described above under the caption "-- Limitation on Liens."

     In connection with any consolidation, merger, transfer, lease or other
disposition contemplated hereby, the Company shall deliver, or cause to be
delivered, to the Trustee, in form and substance reasonably satisfactory to the
Trustee, an Officers' Certificate stating that such consolidation, merger,
transfer, lease or other disposition and the supplemental indenture in respect
thereto comply with the requirements under the Indenture and an Opinion of
Counsel stating that the requirements of clause (1) of the preceding paragraph
have been complied with. Upon any such consolidation or merger or any such sale,
assignment, transfer, lease or other disposition substantially as an entirety on
a consolidated basis of the properties and assets of the Company in accordance
with the foregoing in which the Company is not the continuing Person, the
Surviving Entity shall succeed to, and be substituted for, and may exercise
every right and power of, the Company under the Indenture with the same effect
as if the Surviving Entity had been named as the Company therein, and thereafter
the Company, except in the case of a lease, will be discharged from all
obligations and covenants under the Indenture and the notes.

Events of Default

     The following are "Events of Default" under the Indenture:

     (1) default in the payment of the principal of or premium, if any, on any
of the notes, whether such payment is due at maturity, upon redemption, upon
repurchase pursuant to a Change of Control Offer or a Net Proceeds Offer, upon
acceleration or otherwise; or

     (2) default in the payment of any installment of interest on any of the
notes, when it becomes due and payable, and the continuance of such default for
a period of 30 days; or

     (3) default in the performance or breach of the provisions of the
"Consolidation, Merger, Etc." section of the Indenture, the failure to make or
consummate a Change of Control Offer in accordance with the provisions of the
Indenture described under the caption "-- Change of Control" or the failure to
make or consummate a Net Proceeds Offer in accordance with the provisions of the
Indenture described under the caption "-- Limitation on Disposition of Proceeds
of Asset Sales;" or

     (4) the Company or any Subsidiary Guarantor shall fail to perform or
observe any other term, covenant or agreement contained in the notes, any
Subsidiary Guarantee or the Indenture (other than a default specified in (1),
(2) or (3) above) for a period of 45 days after written notice of such failure
requiring the Company to remedy the same shall have been given (a) to the
Company by the Trustee or (b) to the Company and the Trustee by the holders of
at least 25% in aggregate principal amount of the notes then outstanding; or

     (5) the occurrence and continuation beyond any applicable grace period of
any default in the payment of the principal of (or premium, if any, on) or
interest on any Indebtedness of the Company (other than the notes or any
Non-Recourse Indebtedness) or any Restricted Subsidiary for money borrowed when
due, or any other default causing acceleration of any Indebtedness (other than
Non-Recourse Indebtedness) of the Company or any Restricted Subsidiary for money
borrowed, provided that the aggregate principal amount of such Indebtedness
shall exceed $20,000,000; provided further, that if any such default is cured or
waived or any such acceleration rescinded, or such Indebtedness is repaid,
within a period of 10 days from the continuation of such default beyond the
applicable grace period or the occurrence of such acceleration, as the case may
be, such Event of Default under the Indenture and any consequential acceleration
of the notes shall be automatically rescinded, so long as such rescission does
not conflict with any judgment or decree; or

     (6) the commencement of proceedings, or the taking of any enforcement
action, including by way of set-off, by any holder of at least $20,000,000 in
aggregate principal amount of Indebtedness, other than Non-Recourse

                                       48


Indebtedness, of the Company or any Restricted Subsidiary, after a default under
such Indebtedness, to retain in satisfaction of such Indebtedness or to collect
or seize, dispose of or apply in satisfaction of such Indebtedness, property or
assets of the Company or any Restricted Subsidiary having a fair market value
(as determined by the Board of Directors) in excess of $20,000,000 individually
or in the aggregate, provided, that if any such proceedings or actions are
terminated or rescinded, or such Indebtedness is repaid, such Event of Default
under the Indenture and any consequential acceleration of the notes shall be
automatically rescinded, so long as (a) such rescission does not conflict with
any judgment or decree and (b) the holder of such Indebtedness shall not have
applied any such property or assets in satisfaction of such Indebtedness; or

     (7)  any Subsidiary Guarantee shall for any reason cease to be, or be
asserted by the Company or any Subsidiary Guarantor, as applicable, not to be,
in full force and effect, enforceable in accordance with its terms (except
pursuant to the release of any such Subsidiary Guarantee in accordance with the
Indenture); or

     (8)  final judgments or orders rendered against the Company or any Material
Restricted Subsidiary that are unsatisfied and that require the payment in
money, either individually or in an aggregate amount, that is more than
$20,000,000 over the coverage under applicable insurance policies and either (a)
commencement by any creditor of an enforcement proceeding upon such judgment
(other than a judgment that is stayed by reason of pending appeal or otherwise)
or (b) the occurrence of a 60-day period during which a stay of such judgment or
order, by reason of pending appeal or otherwise, was not in effect; or

     (9)  the entry of a decree or order by a court having jurisdiction in the
premises (a) for relief in respect of the Company or any Material Restricted
Subsidiary in an involuntary case or proceeding under any applicable federal or
state bankruptcy, insolvency, reorganization or other similar law or (b)
adjudging the Company or any Material Restricted Subsidiary bankrupt or
insolvent, or approving a petition seeking reorganization, arrangement,
adjustment or composition of the Company or a Material Restricted Subsidiary
under any applicable federal or state law, or appointing under any such law a
custodian, receiver, liquidator, assignee, trustee, sequestrator or other
similar official of the Company or any Material Restricted Subsidiary or of a
substantial part of their consolidated assets, or ordering the winding up or
liquidation of their affairs, and the continuance of any such decree or order
for relief or any such other decree or order unstayed and in effect for a period
of 60 consecutive days; or

     (10) the commencement by the Company or any Material Restricted Subsidiary
of a voluntary case or proceeding under any applicable federal or state
bankruptcy, insolvency, reorganization or other similar law or any other case or
proceeding to be adjudicated bankrupt or insolvent, or the consent by the
Company or any Material Restricted Subsidiary to the entry of a decree or order
for relief in respect thereof in an involuntary case or proceeding under any
applicable federal or state bankruptcy, insolvency, reorganization or other
similar law or to the commencement of any bankruptcy or insolvency case or
proceeding against it, or the filing by the Company or any Material Restricted
Subsidiary of a petition or consent seeking reorganization or relief under any
applicable federal or state law, or the consent by it under any such law to the
filing of any such petition or to the appointment of or taking possession by a
custodian, receiver, liquidator, assignee, trustee or sequestrator (or other
similar official) of any of the Company or any Material Restricted Subsidiary or
of any substantial part of their consolidated assets, or the making by it of an
assignment for the benefit of creditors under any such law.

     If an Event of Default (other than as specified in clause (9) or (10)
above) shall occur and be continuing, the Trustee, by written notice to the
Company, or the holders of at least 25% in aggregate principal amount of the
notes then outstanding, by notice to the Trustee and the Company, may declare
the principal of, premium, if any, and accrued interest on all of the notes then
outstanding due and payable immediately, upon which declaration all amounts
payable in respect of the notes shall be immediately due and payable. If an
Event of Default specified in clause (9) or (10) above occurs and is continuing,
then the principal of, premium, if any, and accrued interest on all of the notes
then outstanding shall ipso facto become and be immediately due and payable
without any declaration, notice or other act on the part of the Trustee or any
Holder of notes.

     After a declaration of acceleration under the Indenture, but before a
judgment or decree for payment of the money due has been obtained by the
Trustee, the Holders of a majority in aggregate principal amount of the notes
then outstanding, by written notice to the Company and the Trustee, may rescind
such declaration if:

(1)  the Company or any Subsidiary Guarantor has paid or deposited with the
Trustee a sum sufficient to pay:

                                       49


     (a)  all sums paid or advanced by the Trustee under the Indenture and the
          reasonable compensation, expenses, disbursements and advances of the
          Trustee, its agents and counsel,

     (b)  all overdue interest on all notes then outstanding,

     (c)  the unpaid principal of and premium, if any, on any notes which have
          become due otherwise than by such declaration of acceleration,
          including any securities required to have been purchased pursuant to a
          Change of Control Offer or a Net Proceeds Offer, as applicable, and
          interest thereon at the rate borne by the notes, and

     (d)  to the extent that payment of such interest is lawful, interest upon
          overdue interest and overdue principal at the rate borne by the notes
          which has become due otherwise than by such declaration of
          acceleration;

(2)  the rescission would not conflict with any judgment or decree of a court of
     competent jurisdiction; and

(3)  all Events of Default, other than the nonpayment of principal of, premium,
     if any, and interest on the notes that has become due solely by such
     declaration of acceleration, have been cured or waived.

     The Holders of not less than a majority in aggregate principal amount of
the notes then outstanding may on behalf of the Holders of all the notes waive
any past defaults under the Indenture, except a default in the payment of the
principal of (or premium, if any, on) or interest on any note or a default in
respect of a covenant or provision which under the Indenture cannot be modified
or amended without the consent of the Holder of each note then outstanding
affected thereby.

     No Holder of any of the notes has any right to institute any proceeding
with respect to the Indenture or any remedy thereunder, unless such Holder has
previously given written notice to the Trustee of a continuing Event of Default,
the Holders of at least 25% in aggregate principal amount of the notes then
outstanding have made written request, and offered reasonable indemnity, to the
Trustee to institute such proceeding as Trustee under the notes and the
Indenture, the Trustee has failed to institute such proceeding within 60 days
after receipt of such notice and offer of indemnity and the Trustee, within such
60-day period, has not received directions inconsistent with such written
request by Holders of a majority in aggregate principal amount of the notes then
outstanding. Such limitations do not apply, however, to a suit instituted by a
Holder of a note for the enforcement of the payment of the principal of,
premium, if any, or interest on such note on or after the respective due dates
expressed in such note.

     During the existence of an Event of Default, the Trustee is required to
exercise such of the rights and powers vested in it under the Indenture, and use
the same degree of care and skill in its exercise, as a prudent person would
exercise or use under the circumstances in the conduct of such person's own
affairs. Subject to the provisions of the Indenture relating to the duties of
the Trustee, the Trustee under the Indenture is not under any obligation to
exercise any of its rights or powers under the Indenture at the request or
direction of any Holders of the notes unless such Holders shall have offered to
the Trustee reasonable security or indemnity. Subject to certain provisions in
the Indenture relating to the rights of the Trustee, the Holders of a majority
in aggregate principal amount of the notes then outstanding have the right to
direct the time, method and place of conducting any proceeding for any remedy
available to the Trustee, or exercising any trust or power conferred on the
Trustee under the Indenture.

     If a Default or an Event of Default occurs and is known to the Trustee, the
Trustee shall mail to each Holder of notes notice of the Default or Event of
Default within 60 days after the occurrence thereof in the manner and to the
extent provided in Section 313(c) of the Trust Indenture Act. Except in the case
of a Default or an Event of Default in payment of principal of, premium, if any,
or interest on any notes, the Trustee may withhold the notice to the Holders of
such notes if and so long as the board of directors, the executive committee, or
a trust committee of directors and/or responsible officers of the Trustee in
good faith determine that the withholding of such notice is in the interest of
the Holders of the notes.

     The Company is required to furnish to the Trustee annual and quarterly
statements as to the performance by the Company of its obligations under the
Indenture and as to any default in such performance. The Company is also
required to notify the Trustee within ten days after any Default.

                                       50


Legal Defeasance or Covenant Defeasance of Indenture

     The Company may, at its option and at any time, terminate the obligations
of the Company and the Subsidiary Guarantors with respect to the notes then
outstanding ("legal defeasance"). Such legal defeasance means that the Company
and the Subsidiary Guarantors shall be deemed to have paid and discharged the
entire Indebtedness represented by the notes then outstanding, except for:

(1)  the rights of Holders of notes then outstanding to receive payment in
     respect of the principal of, premium, if any, on and interest on such notes
     when such payments are due,

(2)  the Company's obligations to issue temporary notes, register the transfer
     or exchange of any notes, replace mutilated, destroyed, lost or stolen
     notes and maintain an office or agency for payments in respect of the
     notes,

(3)  the rights, powers, trusts, duties and immunities of the Trustee, and

(4)  the defeasance provisions of the Indenture.

In addition, the Company may, at its option and at any time, elect to terminate
the obligations of the Company and any Subsidiary Guarantor with respect to
certain covenants that are set forth in the Indenture, some of which are
described above under the caption "-- Certain Covenants," and any omission to
comply with such obligations shall not constitute a Default or an Event of
Default with respect to the notes ("covenant defeasance").

     In order to exercise either legal defeasance or covenant defeasance:

(1)  the Company or any Subsidiary Guarantor must irrevocably deposit, with the
     Trustee, in trust, for the benefit of the holders of the notes, cash in
     United States dollars, U.S. Government Obligations (as defined in the
     Indenture), or a combination thereof, in such amounts as will be
     sufficient, in the opinion of a nationally recognized firm of independent
     public accountants, to pay the principal of, premium, if any, on and
     interest on the notes then outstanding to redemption or maturity;

(2)  the Company shall have delivered to the Trustee an Opinion of Counsel to
     the effect that the Holders of the notes then outstanding will not
     recognize income, gain or loss for federal income tax purposes as a result
     of such legal defeasance or covenant defeasance and will be subject to
     federal income tax on the same amounts, in the same manner and at the same
     times as would have been the case if such legal defeasance or covenant
     defeasance had not occurred (in the case of legal defeasance, such opinion
     must refer to and be based upon a published ruling of the Internal Revenue
     Service or a change in applicable federal income tax laws);

(3)  no Default or Event of Default shall have occurred and be continuing on the
     date of such deposit;

(4)  such legal defeasance or covenant defeasance shall not cause the Trustee to
     have a conflicting interest under the Indenture or the Trust Indenture Act
     with respect to any securities of the Company or any Subsidiary Guarantor;

(5)  such legal defeasance or covenant defeasance shall not result in a breach
     or violation of, or constitute a default under, any material agreement or
     instrument to which the Company or any Subsidiary Guarantor is a party or
     by which it is bound; and

(6)  the Company shall have delivered to the Trustee an Officers' Certificate
     and an Opinion of Counsel satisfactory to the Trustee, which, taken
     together, state that all conditions precedent under the Indenture to either
     legal defeasance or covenant defeasance, as the case may be, have been
     complied with and that no violations under agreements governing any other
     outstanding Indebtedness would result therefrom.

Satisfaction and Discharge

     The Indenture will be discharged and will cease to be of further effect
(except as to surviving rights or registration of transfer or exchange of the
notes, as expressly provided for in the Indenture) as to all notes then
outstanding when:

                                       51


(1)  either (a) all the notes theretofore authenticated and delivered (except
     lost, stolen or destroyed notes which have been replaced or paid and notes
     for whose payment money has theretofore been deposited in trust or
     segregated and held in trust by the Company and thereafter repaid to the
     Company or discharged from such trust) have been delivered to the Trustee
     for cancellation or (b) all notes not theretofore delivered to the Trustee
     for cancellation have become due and payable or will become due and payable
     at their Stated Maturity within one year, or are to be called for
     redemption within one year under arrangements satisfactory to the Trustee
     for the serving of notice of redemption by the Trustee in the name, and at
     the expense, of the Company, and the Company has irrevocably deposited or
     caused to be deposited with the Trustee funds in an amount sufficient to
     pay and discharge the entire indebtedness on the notes not theretofore
     delivered to the Trustee for cancellation, for principal of (and premium,
     if any, on) and interest on the notes to the date of deposit (in the case
     of notes which have become due and payable) or to the Stated Maturity or
     Redemption Date, as the case may be, together with instructions from the
     Company irrevocably directing the Trustee to apply such funds to the
     payment thereof at maturity or redemption, as the case may be;

(2)  the Company has paid all other sums payable under the Indenture by the
     Company; and

(3)  the Company has delivered to the Trustee an Officers' Certificate and an
     Opinion of Counsel satisfactory to the Trustee, which, taken together,
     state that all conditions precedent under the Indenture relating to the
     satisfaction and discharge of the Indenture have been complied with and
     that no violations under agreements governing any other outstanding
     Indebtedness would result therefrom.

Amendments

     From time to time, the Company and the Trustee may, without the consent of
the Holders of the notes, modify, amend or supplement the Indenture or the notes
for certain specified purposes, including, among other things, curing
ambiguities, defects or inconsistencies, qualifying, or maintaining the
qualification of, the Indenture under the Trust Indenture Act, provided that
such change does not adversely affect the rights of any Holder of the notes.
Other modifications and amendments of the Indenture or the notes may be made by
the Company, the Subsidiary Guarantors and the Trustee with the consent of the
Holders of not less than a majority of the aggregate principal amount of the
notes then outstanding; provided, however, that no such modification or
amendment may, without the consent of the Holder of each note then outstanding
affected thereby:

(1)  change the Stated Maturity of the principal of, or any installment of
     interest on any note,

(2)  reduce the principal amount of (or the premium, if any, on) or interest on
     any note,

(3)  change the place, coin or currency of payment of principal of (or the
     premium, if any, on) or interest on, any note,

(4)  impair the right to institute suit for the enforcement of any payment on or
     with respect to any note,

(5)  reduce the above-stated percentage of aggregate principal amount of notes
     then outstanding necessary to modify or amend the Indenture,

(6)  reduce the percentage of aggregate principal amount of notes then
     outstanding necessary for waiver of compliance with certain provisions of
     the Indenture or for waiver of certain defaults under the Indenture,

(7)  modify or amend any provisions of the Indenture relating to the
     modification and amendment of the Indenture or relating to the waiver of
     past defaults or covenants, except as otherwise specified,

(8)  modify or amend any provision of the Indenture relating to Subsidiary
     Guarantees in a manner adverse to the Holders or

(9)  modify or amend the obligation of the Company to make and consummate a
     Change of Control Offer in the event of a Change of Control or to make and
     consummate the Net Proceeds Offer with respect to any Asset Sale or modify
     any of the provisions or definitions with respect thereto.

                                       52


The Trustee

     Prior to a Default, the Trustee shall not be liable except for the
performance of such duties as are specifically set out in the Indenture. If an
Event of Default has occurred and is continuing, the Trustee will exercise such
rights and powers vested in it under the Indenture, and use the same degree of
care and skill in its exercise, as a prudent person would exercise or use under
the circumstances in the conduct of such person's own affairs.

     The Indenture and the Trust Indenture Act contain limitations on the rights
of the Trustee thereunder, should it become a creditor of the Company, to obtain
payment of claims in certain cases or to realize on certain property received by
it in respect of any such claims, as security or otherwise. The Trustee is
permitted to engage in other transactions; provided, however, that if it
acquires any conflicting interest (as defined in the Trust Indenture Act) after
a default has occurred and is continuing it must eliminate such conflict or
resign.

Governing Law

     The Indenture, the notes and the Subsidiary Guarantees provide that they
will be governed by the laws of the State of New York.

Certain Definitions

     "Acquired Indebtedness" means Indebtedness of a Person:

(1)  assumed in connection with an Asset Acquisition from such Person,

(2)  outstanding at the time such Person becomes a Subsidiary of any other
     Person (other than any Indebtedness incurred in connection with, or in
     contemplation of, such Asset Acquisition or such Person becoming such a
     Subsidiary) or

(3)  any renewals, extensions, substitutions, refinancings or replacements
     (each, for purposes of this clause, a "refinancing") by the Company of any
     Indebtedness described in clause (1) or (2) of this definition, including
     any successive refinancings, so long as

     (a) any such new Indebtedness shall be in a principal amount that does not
         exceed the principal amount (or, if such Indebtedness being refinanced
         provides for an amount less than the principal amount thereof to be due
         and payable upon a declaration of acceleration thereof, such lesser
         amount as of the date of determination) so refinanced plus the amount
         of any premium required to be paid in connection with such refinancing
         pursuant to the terms of the Indebtedness refinanced or the amount of
         any premium reasonably determined by the Company as necessary to
         accomplish such refinancing, plus the amount of expenses of the Company
         incurred in connection with such refinancing,

     (b) in the case of any refinancing of Subordinated Indebtedness, such new
         Indebtedness is made subordinate to the notes at least to the same
         extent as the Indebtedness being refinanced and

     (c) such new Indebtedness has an Average Life longer than the Average Life
         of the notes and a final Stated Maturity later than the final Stated
         Maturity of the notes.

     "Adjusted Consolidated Net Tangible Assets" means, without duplication, as
of the date of determination:

(1)  the sum of:

     (a) discounted future net revenues from proved oil and gas reserves of the
         Company and its Restricted Subsidiaries calculated in accordance with
         SEC guidelines before any state or federal income taxes, as audited by
         a nationally recognized firm of independent petroleum engineers in a
         reserve report prepared as of the end of the Company's most recently
         completed fiscal year, as increased by, as of the date of
         determination, the estimated discounted future net revenues from (i)
         estimated proved oil and gas reserves acquired since the date of such
         year-end reserve report, and (ii) estimated oil and gas reserves
         attributable to upward revisions of estimates of proved oil and gas
         reserves since the date of such year-end reserve report

                                       53


         due to exploration, development or exploitation activities, in each
         case calculated in accordance with SEC guidelines (using the prices
         utilized in such year-end reserve report), and decreased by, as of the
         date of determination, the estimated discounted future net revenues
         from (iii) estimated proved oil and gas reserves produced or disposed
         of since the date of such year-end reserve report and (iv) estimated
         oil and gas reserves attributable to downward revisions of estimates of
         proved oil and gas reserves since the date of such year-end reserve
         report due to changes in geological conditions or other factors which
         would, in accordance with standard industry practice, cause such
         revisions, in each case calculated in accordance with SEC guidelines
         (using the prices utilized in such year-end reserve report); provided,
         that in the case of each of the determinations made pursuant to clauses
         (i) through (iv), such increases and decreases shall be as estimated by
         the Company's petroleum engineers, except that in the event there is a
         Material Change as a result of such acquisitions, dispositions or
         revisions, then the discounted future net revenues used for purposes of
         this clause (1) (a) shall be confirmed in writing by a nationally
         recognized firm of independent petroleum engineers,

     (b) the capitalized costs that are attributable to oil and gas properties
         of the Company and its Restricted Subsidiaries to which no proved oil
         and gas reserves are attributable, based on the Company's books and
         records as of a date no earlier than the date of the Company's latest
         annual or quarterly financial statements,

     (c) the Net Working Capital on a date no earlier than the date of the
         Company's latest annual or quarterly financial statements and

     (d) the greater of (i) the net book value on a date no earlier than the
         date of the Company's latest annual or quarterly financial statements
         or (ii) the appraised value, as estimated by independent appraisers, of
         other tangible assets (including, without duplication, Investments in
         unconsolidated Restricted Subsidiaries) of the Company and its
         Restricted Subsidiaries, as of the date no earlier than the date of the
         Company's latest audited financial statements,

(2)  minus the sum of

     (a) minority interests (other than a minority interest in a Subsidiary that
         is a business trust or similar entity formed for the primary purpose of
         issuing preferred securities the proceeds of which are loaned to the
         Company or a Restricted Subsidiary),

     (b) any net gas balancing liabilities of the Company and its Restricted
         Subsidiaries reflected in the Company's latest audited financial
         statements,

     (c) to the extent included in (1) (a) above, the discounted future net
         revenues, calculated in accordance with SEC guidelines (using the
         prices utilized in the Company's most recent year-end reserve report),
         attributable to reserves which are required to be delivered to third
         parties to fully satisfy the obligations of the Company and its
         Restricted Subsidiaries with respect to Volumetric Production Payments
         on the schedules specified with respect thereto and

     (d) the discounted future net revenues, calculated in accordance with SEC
         guidelines (using the prices utilized in the most recent year-end
         reserve report), attributable to reserves subject to Dollar-Denominated
         Production Payments which, based on the estimates of production and
         price assumptions included in determining the discounted future net
         revenues specified in (1) (a) above, would be necessary to fully
         satisfy the payment obligations of the Company and its Restricted
         Subsidiaries with respect to Dollar-Denominated Production Payments on
         the schedules specified with respect thereto.

If the Company changes its method of accounting from the successful efforts
method to the full cost method or a similar method of accounting, "Adjusted
Consolidated Net Tangible Assets" will continue to be calculated as if the
Company were still using the successful efforts method of accounting.

     "Affiliate" means, with respect to any specified Person, any other Person
directly or indirectly controlling or controlled by or under direct or indirect
common control with such specified Person. For the purposes of this definition,
"control," when used with respect to any Person, means the power to direct the
management and policies of such Person, directly or indirectly, whether through
the ownership of voting securities, by contract or otherwise;

                                       54


and the terms "controlling" and "controlled" have meanings correlative to the
foregoing. For purposes of this definition, beneficial ownership of 10% or more
of the voting common equity (on a fully diluted basis) or options or warrants to
purchase such equity (but only if exercisable at the date of determination or
within 60 days thereof) of a Person shall be deemed to constitute control of
such Person. No Person shall be deemed an Affiliate of an oil and gas royalty
trust solely by virtue of ownership of units of beneficial interest in such
trust.

     "Asset Acquisition" means:

(1)  an Investment by the Company or any Restricted Subsidiary in any other
     Person pursuant to which such Person shall become a Restricted Subsidiary
     or any Restricted Subsidiary shall be merged with or into the Company or
     any Restricted Subsidiary or

(2)  the acquisition by the Company or any Restricted Subsidiary of the
     properties and assets of any Person which constitute all or substantially
     all of the properties and assets of such Person or any division or line of
     business of such Person.

     "Asset Sale" means any sale, issuance, conveyance, transfer, lease or other
disposition to any Person other than the Company or any of its Restricted
Subsidiaries (including by means of a Sale/Leaseback Transaction or by way of
merger or consolidation) (collectively, for purposes of this definition, a
"transfer"), directly or indirectly, in one or a series of related transactions,
of:

(1)  any Capital Stock of any Restricted Subsidiary held by the Company or any
     Restricted Subsidiary;

(2)  the properties and assets of any division or line of business of the
     Company or any of its Restricted Subsidiaries substantially as an entirety;
     or

(3)  any other properties or assets of the Company or any of its Restricted
     Subsidiaries other than the sale, transfer or disposition in the ordinary
     course of business of Cash Equivalents, inventory, Hedging Obligations and
     other financial instruments, accounts receivable, hydrocarbons or other
     mineral products.

For the purposes of this definition, the term "Asset Sale" shall not include:

(1)  any transfer of properties or assets that is governed by, and made in
     accordance with, the provisions described under the caption "--
     Consolidation, Merger, etc."

(2)  any transfer of properties or assets to any Person, if permitted under the
     provisions described under the caption "-- Limitation on Restricted
     Payments;"

(3)  any trade or exchange of properties and assets used in the Oil and Gas
     Business of the Company or any Restricted Subsidiary or shares of Capital
     Stock in any Person in the Oil and Gas Business owned by the Company or any
     Restricted Subsidiary for properties and assets used in the Oil and Gas
     Business of any Person or shares of Capital Stock in any Person owned or
     held by another Person, provided, that:

     (a) the fair market value of the properties, assets and shares traded or
         exchanged by the Company or such Restricted Subsidiary (including any
         cash or Cash Equivalents, not to exceed 15% of such fair market value,
         to be delivered by the Company or such Restricted Subsidiary) is
         reasonably equivalent to the fair market value of the properties,
         assets and shares of Capital Stock (together with any cash or Cash
         Equivalents, not to exceed 15% of such fair market value) to be
         received by the Company or such Restricted Subsidiary as determined in
         good faith by (i) any officer of the Company if such fair market value
         is less than $20,000,000 and (ii) the Board of Directors of the Company
         as certified by a certified resolution delivered to the Trustee if such
         fair market value is equal to or in excess of $20,000,000; provided,
         that if such fair market value is equal to or in excess of $40,000,000
         the Company shall deliver a written appraisal by a nationally
         recognized investment banking firm or appraisal firm, in each case
         specializing or having a specialty in oil and gas properties, and

     (b) such exchange is approved by a majority of the Disinterested Directors;
         or

                                       55


(4)  any transfer of properties or assets in a single transaction or series of
     related transactions having a fair market value of less than $20,000,000.

     "Attributable Indebtedness" means, with respect to any particular lease
under which any Person is at the time liable and at any date as of which the
amount thereof is to be determined, the present value of the total net amount of
rent required to be paid by such Person under the lease during the primary term
thereof, without giving effect to any renewals at the option of the lessee,
discounted from the respective due dates thereof to such date of determination
at the rate of interest per annum implicit in the terms of the lease. As used in
the preceding sentence, the "net amount of rent" under any lease for any such
period shall mean the sum of rental and other payments required to be paid with
respect to such period by the lessee thereunder, excluding any amounts required
to be paid by such lessee on account of maintenance and repairs, insurance,
taxes, assessments, water rates or similar charges. In the case of any lease
which is terminable by the lessee upon payment of a penalty, such net amount of
rent shall also include the amount of such penalty, but no rent shall be
considered as required to be paid under such lease subsequent to the first date
upon which it may be so terminated.

     "Average Life" means, with respect to any Indebtedness, as at any date of
determination, the quotient obtained by dividing:

(1)  the sum of the products of (a) the number of years (and any portion
     thereof) from the date of determination to the date or dates of each
     successive scheduled principal payment (including, without limitation, any
     sinking fund or mandatory redemption payment requirements) of such
     Indebtedness multiplied by (b) the amount of each such principal payment by

(2)  the sum of all such principal payments.

     "B8/32 Partners" means B8/32 Partners, Ltd., a corporation organized under
the laws of the Kingdom of Thailand, approximately 46% of the Capital Stock in
which is held by the Company on the date of the Indenture.

     "Board of Directors" means:

(1)  with respect to the Company, either the board of directors of the Company
     or any properly constituted committee thereof that is (a) authorized to
     take the action in question and (b) comprised of members, a majority of
     whom are not officers or employees of the Company or any Subsidiary of the
     Company, and

(2)  with respect to any Restricted Subsidiary, the board of directors of that
     Restricted Subsidiary or any properly constituted committee thereof that is
     authorized to take the action in question.

     "Capital Stock" means, with respect to any Person, any and all shares,
interests, participations, rights in or other equivalents in the equity
interests (however designated) in such Person, and any rights (other than debt
securities convertible into an equity interest), warrants or options exercisable
for, exchangeable for or convertible into such an equity interest in such
Person.

     "Capitalized Lease Obligation" means any obligation to pay rent or other
amounts under a lease of, or other agreement conveying the right to use, any
property (whether real, personal or mixed) that is required to be classified and
accounted for as a capital lease obligation under GAAP, and, for the purpose of
the Indenture, the amount of such obligation at any date shall be the
capitalized amount thereof at such date, determined in accordance with GAAP.

     "Cash Equivalents" means:

(1)  any evidence of Indebtedness with a maturity of 365 days or less issued or
     directly and fully guaranteed or insured by the United States of America or
     any agency or instrumentality thereof (provided, that the full faith and
     credit of the United States of America is pledged in support thereof),

(2)  demand and time deposits and certificates of deposit or acceptances with a
     maturity of 365 days or less of any financial institution that is a member
     of the Federal Reserve System having combined capital and surplus and
     undivided profits of not less than $100,000,000 or any commercial bank
     organized under the laws of any country

                                       56


     other than the United States of America that is a member of the
     Organization for Economic Cooperation and Development ("OECD") and has
     total assets in excess of $100,000,000,

(3)  commercial paper with a maturity of 365 days or less issued by a Person
     that is not an Affiliate of the Company and is organized under the laws of
     any state of the United States of America or the District of Columbia and
     rated at least A-1 by S&P or at least P-1 by Moody's (or, if at any time
     neither S&P nor Moody's shall be rating such obligations, then from such
     other rating service as may be acceptable to the Trustee),

(4)  repurchase obligations with a term of not more than seven days for
     underlying securities of the types described in clause (1) above entered
     into with any commercial bank meeting the specifications of clause (2)
     above,

(5)  overnight bank deposits and bankers' acceptances at any commercial bank
     meeting the qualifications specified in clause (2) above, and

(6)  investments in money market mutual or similar funds which have assets in
     excess of $500,000,000.

     "Change of Control" means the occurrence of any of the following events:

(1)  the Company's properties and assets are sold or otherwise disposed of
     substantially as an entirety on a consolidated basis to any Person or
     related group of Persons in any one transaction or a series of related
     transactions;

(2)  there shall be consummated any consolidation or merger of the Company (a)
     in which the Company is not the continuing or surviving Person (other than
     a consolidation or merger with a wholly owned Subsidiary of the Company in
     which all shares of Common Stock outstanding immediately prior to the
     effectiveness thereof are changed into or exchanged for the same number of
     shares of Common Stock of such Subsidiary) or (b) pursuant to which the
     Common Stock would be converted into cash, securities or other property, in
     each case, other than a consolidation or merger of the Company in which the
     holders of the Common Stock immediately prior to the consolidation or
     merger have, directly or indirectly, at least a majority of the Common
     Stock of the continuing or surviving Person immediately after such
     consolidation or merger; or

(3)  any Person or any Persons acting together which would constitute a "group"
     for purposes of Section 13(d)(3) of the Exchange Act (other than the
     Company, any Subsidiary of the Company, any employee stock purchase plan,
     stock option plan or other stock incentive plan or program, retirement plan
     or automatic dividend reinvestment plan or any substantially similar plan
     of the Company or any Subsidiary of the Company or any Person holding
     securities of the Company for or pursuant to the terms of any such employee
     benefit plan), together with any Affiliates thereof, shall acquire
     beneficial ownership (as defined in Rule 13d-3 under the Exchange Act) of
     at least 50% of the Voting Stock of the Company.

     "Common Stock" of any Person means Capital Stock of such Person that does
not rank prior, as to the payment of dividends or as to the distribution of
assets upon any voluntary or involuntary liquidation, dissolution or winding up
of such Person, to shares of Capital Stock of any other class of such Person.

     "Consolidated Fixed Charge Coverage Ratio" means, for any period, the ratio
of:

(1)  the sum of Consolidated Net Income, Consolidated Interest Expense,
     Consolidated Income Tax Expense and Consolidated Non-cash Charges deducted
     in computing Consolidated Net Income, in each case, for such period, of the
     Company and its Restricted Subsidiaries on a consolidated basis, all
     determined in accordance with GAAP, decreased (to the extent included in
     determining Consolidated Net Income) by the sum of

     (a) the amount of deferred revenues that are amortized during such period
         and are attributable to reserves that are subject to Volumetric
         Production Payments and

     (b) amounts recorded in accordance with GAAP as repayments of principal and
         interest pursuant to Dollar-Denominated Production Payments, to

(2)  the sum of such Consolidated Interest Expense for such period; provided,
     that:

                                       57


     (a) in making such computation, the Consolidated Interest Expense
         attributable to interest on any Indebtedness required to be computed on
         a pro forma basis in accordance with clause (1) of the covenant
         described under the caption "-- Limitation on Indebtedness" and bearing
         a floating interest rate shall be computed as if the rate in effect on
         the date of computation had been the applicable rate for the entire
         period,

     (b) in making such computation, the Consolidated Interest Expense
         attributable to interest on any Indebtedness under a revolving credit
         facility required to be computed on a pro forma basis in accordance
         with clause (1) of the covenant described under the caption "--
         Limitation on Indebtedness" shall be computed based upon the average
         daily balance of such Indebtedness during the applicable period,
         provided, that such average daily balance shall be reduced by the
         amount of any repayment of Indebtedness under a revolving credit
         facility during the applicable period, which repayment permanently
         reduced the commitments or amounts available to be reborrowed under
         such facility,

     (c) notwithstanding clauses (a) and (b) of this proviso, interest on
         Indebtedness determined on a fluctuating basis, to the extent such
         interest is covered by agreements relating to Interest Rate Protection
         Obligations, shall be deemed to have accrued at the rate per annum
         resulting after giving effect to the operation of such agreements and

     (d) in making such calculation, Consolidated Interest Expense shall exclude
         interest attributable to Dollar-Denominated Production Payments.

     "Consolidated Income Tax Expense" means, for any period, the provision for
federal, state, local and foreign income taxes of the Company and its Restricted
Subsidiaries for such period as determined on a consolidated basis in accordance
with GAAP.

     "Consolidated Interest Expense" means, for any period, without duplication,
the sum of:

(1)  the interest expense of the Company and its Restricted Subsidiaries for
     such period as determined on a consolidated basis in accordance with GAAP,
     including, without limitation:

     (a) any amortization of debt discount,

     (b) the net cost under Interest Rate Protection Obligations (including any
         amortization of discounts),

     (c) the interest portion of any deferred payment obligation,

     (d) all commissions, discounts and other fees and charges owed with respect
         to letters of credit and bankers' acceptance financing and

     (e) all accrued interest, in each case to the extent attributable to such
         period,

(2)  to the extent any Indebtedness of any Person (other than the Company or a
     Restricted Subsidiary) is guaranteed by the Company or any Restricted
     Subsidiary, the aggregate amount of interest paid or accrued by such other
     Person during such period attributable to any such Indebtedness, in each
     case to the extent attributable to that period,

(3)  the aggregate amount of the interest component of Capitalized Lease
     Obligations paid, accrued and/or scheduled to be paid or accrued by the
     Company and its Restricted Subsidiaries during such period as determined on
     a consolidated basis in accordance with GAAP and

(4)  the aggregate amount of dividends paid or accrued on Redeemable Capital
     Stock or Preferred Stock of the Company and its Restricted Subsidiaries, to
     the extent such Redeemable Capital Stock or Preferred Stock is owned by
     Persons other than Restricted Subsidiaries.

     "Consolidated Net Income" means, for any period, the consolidated net
income (or loss) of the Company and its Restricted Subsidiaries for such period
as determined in accordance with GAAP, adjusted by excluding:

                                       58


(1)  net after-tax extraordinary gains or losses (less all fees and expenses
     relating thereto),

(2)  net after-tax gains or losses (less all fees and expenses relating thereto)
     attributable to Asset Sales,

(3)  the net income (or net loss) of any Person (other than the Company or any
     of its Restricted Subsidiaries), in which the Company or any of its
     Restricted Subsidiaries has an ownership interest, except to the extent of
     the amount of dividends, interest on indebtedness or other distributions
     actually paid to the Company or its Restricted Subsidiaries in cash by such
     other Person during such period (regardless of whether such cash dividends,
     interest on indebtedness or other distributions is attributable to net
     income (or net loss) of such Person during such period or during any prior
     period),

(4)  net income (or net loss) of any Person combined with the Company or any of
     its Restricted Subsidiaries on a "pooling of interests" basis attributable
     to any period prior to the date of combination,

(5)  the net income of any Restricted Subsidiary to the extent that the
     declaration or payment of dividends or similar distributions by that
     Restricted Subsidiary is not at the date of determination permitted,
     directly or indirectly, by operation of the terms of its charter or any
     agreement, instrument, judgment, decree, order, statute, rule or
     governmental regulation applicable to that Restricted Subsidiary or its
     stockholders,

(6)  income resulting from transfers of assets received by the Company or any
     Restricted Subsidiary from an Unrestricted Subsidiary,

(7)  any write-downs of non-current assets (provided, however, that any ceiling
     limitation write-downs under SEC guidelines shall be treated as capitalized
     costs, as if such write-downs had not occurred),

(8)  unrealized losses under derivative instruments included in the
     determination of Consolidated Net Income, including, without limitation,
     those resulting from the application of FAS 133,

(9)  the cumulative effect of a change in accounting principles and

(10) charges to consolidated net income resulting from variable based equity
compensation arrangements.

     "Consolidated Net Worth" means, at any date, the consolidated stockholders'
equity of the Company less the amount of such stockholders' equity attributable
to Redeemable Capital Stock or treasury stock of the Company and its Restricted
Subsidiaries, as determined in accordance with GAAP.

     "Consolidated Non-cash Charges" means, for any period, the aggregate
depreciation, depletion, amortization, impairment and other non-cash expenses of
the Company and its Restricted Subsidiaries reducing Consolidated Net Income for
such period, determined on a consolidated basis in accordance with GAAP
(excluding any such non-cash charge which requires an accrual of or reserve for
cash charges for any future period).

     "Credit Agreement" means the Credit Agreement dated as of March 8, 2001,
among the Company as the borrower, certain commercial lending institutions, Bank
of Montreal, acting through its Chicago, Illinois branch as the administrative
agent, Toronto Dominion (Texas), Inc., as syndication agent, BNP Paribas, as
documentation agent, and Bank of America, N.A. and Fleet National Bank, as
managing agents, including any notes, swing-line notes, letters of credit,
pledge agreements and other documents executed in connection therewith, as such
agreement has been and may be amended, modified, supplemented, extended,
restated, replaced (including replacement after the termination of such
agreement), restructured, increased, renewed or refinanced from time to time in
one or more credit agreements, loan agreements, instruments or similar
agreements, whether or not with the same lenders or agents, as such may be
further amended, modified, supplemented, extended, restated, replaced (including
replacement after the termination of such agreement), restructured, increased,
renewed or refinanced from time to time.

     "Credit Agreement Obligations" means all monetary obligations of every
nature of the Company or a Restricted Subsidiary, including without limitation,
obligations to pay principal and interest, reimbursement obligations under
letters of credit, fees, expenses and indemnities, from time to time owed to the
lenders or any agent under or in respect of the Credit Agreement.

                                       59


     "Default" means any event, act or condition that is, or after notice or
passage of time or both would be, an Event of Default.

     "Designated Senior Indebtedness" means:

(1)  all Senior Indebtedness constituting Credit Agreement Obligations and

(2)  any other Senior Indebtedness which (a) at the time of incurrence equals or
     exceeds $50,000,000 in aggregate principal amount and (b) is specifically
     designated by the Company in the instrument evidencing such Senior
     Indebtedness as "Designated Senior Indebtedness" for purpose of the
     Indenture.

     "Disinterested Director" means, with respect to any transaction or series
of transactions in respect of which the Board of Directors is required to
deliver its resolution under the Indenture, a member of the Board of Directors
who does not have any material direct or indirect financial interest (other than
an interest arising solely from the beneficial ownership of Capital Stock of the
Company) in or with respect to such transaction or series of transactions.

     "Dollar-Denominated Production Payments" means production payment
obligations recorded as liabilities in accordance with GAAP, together with all
undertakings and obligations in connection therewith.

     "Event of Default" has the meaning set forth above under the caption
"Events of Default."

     "Foreign Asset Sale" means an Asset Sale by a Foreign Subsidiary or an
Asset Sale by the Company or any of its Restricted Subsidiaries of any asset
located outside the United States of America.

     "Foreign Subsidiary" means:

(1)  any Restricted Subsidiary engaged in the Oil and Gas Business having the
     majority of its operations outside the United States of America,
     irrespective of its jurisdiction of organization, and

(2)  any other Restricted Subsidiary whose assets (excluding any cash and Cash
     Equivalents) consist exclusively of Capital Stock or Indebtedness of one or
     more Restricted Subsidiaries described in clause (1) of this definition.

     "GAAP" means generally accepted accounting principles, consistently
applied, that are set forth in the opinions and pronouncements of the Accounting
Principles Board of the American Institute of Certified Public Accountants and
statements and pronouncements finally approved or adopted by the Financial
Accounting Standards Board or in such other statements by such other entity as
may be approved by a significant segment of the accounting profession of the
United States of America, which are applicable or in full force and effect as of
the date of the Indenture.

     "guarantee" by any Person means any obligation, contingent or otherwise, of
such Person guaranteeing or having the economic effect of guaranteeing any
Indebtedness of any other Person (the "primary obligor") in any manner, whether
directly or indirectly, and including, without limitation, any Lien on the
assets of such Person securing obligations of the primary obligor and any
obligation of such Person:

(1)  to purchase or pay (or advance or supply funds for the purchase or payment
     of) such Indebtedness or to purchase (or to advance or supply funds for the
     purchase or payment of) any security for the payment of such Indebtedness,

(2)  to purchase property, securities or services for the purpose of assuring
     the holder of such Indebtedness of the payment of such Indebtedness, or

(3)  to maintain working capital, equity capital or other financial statement
     condition or liquidity of the primary obligor so as to enable the primary
     obligor to pay such Indebtedness; provided, however, that a guarantee by
     any Person shall not include (i) endorsements by such Person for collection
     or deposit, in either case, in the ordinary course of business or (ii) a
     contractual commitment by one Person to invest in another Person for so
     long as such Investment is reasonably expected to constitute a Permitted
     Investment.

When used as a verb, "guarantee" shall have a corresponding meaning.

                                       60


     "Guarantor Senior Indebtedness" means all Indebtedness of a Subsidiary
Guarantor created, incurred, assumed or guaranteed by such Subsidiary Guarantor
(and all renewals, substitutions, refinancings or replacements thereof)
(including the principal of, interest on and fees, premiums, expenses (including
costs of collection), indemnities and other amounts payable in connection with
such Indebtedness) (and including, in the case of the Credit Agreement, interest
accruing after the filing of a petition by or against such Subsidiary Guarantor
under any bankruptcy law, in accordance with and at the rate, including any
default rate, specified with respect to such Indebtedness, whether or not a
claim for such interest is allowed as a claim after such filing in any
proceeding under such bankruptcy law), unless the instrument governing such
Indebtedness expressly provides that such Indebtedness is not senior in right of
payment to its Subsidiary Guarantee. Notwithstanding the foregoing, Guarantor
Senior Indebtedness of a Subsidiary Guarantor will not include:

(1)  Indebtedness of such Subsidiary Guarantor evidenced by its Subsidiary
     Guarantee,

(2)  Indebtedness of such Subsidiary Guarantor that is expressly subordinated or
     junior in right of payment to any Guarantor Senior Indebtedness of such
     Subsidiary Guarantor or its Subsidiary Guarantee,

(3)  Indebtedness which, when incurred and without respect to any election under
     Section 1111(b) of Title 11 United States Code, is by its terms without
     recourse to such Subsidiary Guarantor or Non-Recourse Indebtedness,

(4)  any repurchase, redemption or other obligation in respect of Redeemable
     Capital Stock of such Subsidiary Guarantor,

(5)  to the extent it might constitute Indebtedness, any liability for federal,
     state, local or other taxes owed or owing by such Subsidiary Guarantor,

(6)  Indebtedness of such Subsidiary Guarantor to the Company or any of the
     Company's other Subsidiaries or any other Affiliate of the Company or any
     of such Affiliate's Subsidiaries and

(7)  that portion of any Indebtedness of such Subsidiary Guarantor which at the
     time of issuance is issued in violation of the Indenture (but, as to any
     such Indebtedness, no such violation shall be deemed to exist for purposes
     of this clause (7) if the holder(s) of such Indebtedness or their
     representative or such Subsidiary Guarantor shall have furnished to the
     Trustee an Opinion of Counsel, addressed to the Trustee (which counsel may,
     as to matters of fact, rely upon a certificate of such Subsidiary
     Guarantor) to the effect that the incurrence of such Indebtedness does not
     violate the provisions of such Indenture);

provided, that the foregoing exclusions shall not affect the priorities of any
Indebtedness arising solely by operation of law in any case or proceeding or
similar event described in clause (1), (2) or (3) of the second paragraph under
the caption "-- Subordination."

     "Hedging Obligations" means obligations of any Person arising out of
hedging transactions entered into in the ordinary course of business, including,
without limitation, swaps, options, forward sales and futures contracts entered
into in connection with interest rates, currencies and energy-related
commodities.

     "Holder" means a Person in whose name a note is registered in the Note
Register.

     "Indebtedness" means, with respect to any Person, without duplication:

(1)  all liabilities of such Person for borrowed money or for the deferred
     purchase price of property or services, excluding any trade accounts
     payable and other accrued current liabilities incurred in the ordinary
     course of business, but including, without limitation, all obligations,
     contingent or otherwise, of such Person in connection with any letters of
     credit or bankers' acceptance and in connection with any agreement to
     purchase, redeem, exchange, convert or otherwise acquire for value any
     Capital Stock of such Person, or any warrants, rights or options to acquire
     such Capital Stock, now or hereafter outstanding, if, and to the extent,
     any of the foregoing would appear as a liability upon a balance sheet of
     such Person prepared in accordance with GAAP,

                                       61


(2)  all obligations of such Person evidenced by bonds, notes, debentures or
     other similar instruments, if, and to the extent, any of the foregoing
     would appear as a liability upon a balance sheet of such Person prepared in
     accordance with GAAP,

(3)  all Indebtedness of such Person created or arising under any conditional
     sale or other title retention agreement with respect to property acquired
     by such Person (even if the rights and remedies of the seller or lender
     under such agreement in the event of default are limited to repossession or
     sale of such property), but excluding trade accounts payable arising in the
     ordinary course of business,

(4)  all Capitalized Lease Obligations of such Person,

(5)  the Attributable Indebtedness (in excess of any related Capitalized Lease
     Obligations) related to any Sale/Leaseback Transaction of such Person,

(6)  all Indebtedness referred to in the preceding clauses of other Persons and
     all dividends of other Persons, the payment of which is secured by (or for
     which the holder of such Indebtedness has an existing right, contingent or
     otherwise, to be secured by) any Lien upon property (including, without
     limitation, accounts and contract rights) owned by such Person, even though
     such Person has not assumed or become liable for the payment of such
     Indebtedness (the amount of such obligation being deemed to be the lesser
     of the value of such property or asset or the amount of the obligation so
     secured),

(7)  all guarantees by such Person of Indebtedness referred to in this
     definition (including, with respect to any Production Payment, any
     warranties, promises or other assurances of production or payment by such
     Person with respect to such Production Payment but excluding other
     contractual obligations of such Person with respect to such Production
     Payment),

(8)  all Redeemable Capital Stock of such Person valued at the greater of its
     voluntary or involuntary maximum fixed repurchase price plus accrued
     dividends,

(9)  all obligations of such Person under or in respect of currency exchange
     contracts and Interest Rate Protection Obligations and

(10) any amendment, supplement, modification, deferral, renewal, extension or
     refunding of any liability of such Person of the types referred to in
     clauses (1) through (9) above.

For purposes hereof, the "maximum fixed repurchase price" of any Redeemable
Capital Stock which does not have a fixed repurchase price shall be calculated
in accordance with the terms of such Redeemable Capital Stock as if such
Redeemable Capital Stock were purchased on any date on which Indebtedness shall
be required to be determined pursuant to the Indenture, and if such price is
based upon, or measured by, the fair market value of such Redeemable Capital
Stock, such fair market value shall be determined in good faith by the board of
directors of the issuer of such Redeemable Capital Stock, provided, however,
that if such Redeemable Capital Stock is not at the date of determination
permitted or required to be repurchased, the "maximum fixed repurchase price"
shall be the book value of such Redeemable Capital Stock. Subject to clause (7)
of the first sentence of this definition, neither Dollar-Denominated Production
Payments nor Volumetric Production Payments shall be deemed to be Indebtedness.

     "Interest Rate Protection Obligations" means the obligations of any Person
pursuant to any arrangement with any other Person whereby, directly or
indirectly, such Person is entitled to receive from time to time periodic
payments calculated by applying either a floating or a fixed rate of interest on
a stated notional amount in exchange for periodic payments made by such Person
calculated by applying a fixed or a floating rate of interest on the same
notional amount and includes, without limitation, interest rate swaps, caps,
floors, collars and similar agreements or arrangements designed to protect
against or manage such Person's and any of its Subsidiaries' exposure to
fluctuations in interest rates.

     "Investment" means, with respect to any Person, any direct or indirect
advance, loan, guarantee of Indebtedness or other extension of credit or capital
contribution to (by means of any transfer of cash or other property or assets to
others or any payment for property, assets or services for the account or use of
others), or any purchase or acquisition by such Person of any Capital Stock,
bonds, notes, debentures or other securities (including derivatives) or
evidences

                                       62


of Indebtedness issued by, any other Person. In addition, the fair market value
of the net assets of any Restricted Subsidiary at the time that such Restricted
Subsidiary is designated an Unrestricted Subsidiary shall be deemed to be an
"Investment" made by the Company in such Unrestricted Subsidiary at such time.
"Investments" shall exclude:

(1)  extensions of trade credit on commercially reasonable terms in accordance
     with normal trade practices and

(2)  Interest Rate Protection Obligations entered into in the ordinary course of
     business or as required by any Permitted Indebtedness, Permitted Subsidiary
     Indebtedness or any Indebtedness incurred in compliance with the covenant
     described above under the caption "-- Limitation on Indebtedness," but only
     to the extent that the notional principal amount of such Interest Rate
     Protection Obligations does not exceed 105% of the principal amount of such
     Indebtedness to which such Interest Rate Protection Obligations relate and

(3)  bonds, notes, debentures or other securities received in compliance with
     the covenant described under the caption "-- Limitation on Disposition of
     Proceeds of Asset Sales" and

(4)  guarantees of performance or other obligations (other than Indebtedness)
     arising in the ordinary course in the Oil and Gas Business including,
     without limitation, obligations under oil and gas exploration, development,
     joint operating, and related agreements and licenses or concessions related
     to the Oil and Gas Business.

     "Investment Grade" means a rating of BBB- or higher by S&P and Baa3 or
higher by Moody's or the equivalent of such ratings by S&P and Moody's.

     "Lien" means any mortgage, charge, pledge, lien (statutory or other),
security interest, hypothecation, assignment for security, claim, or preference
or priority or other encumbrance or similar agreement or preferential
arrangement of any kind or nature whatsoever (including, without limitation, any
agreement to give or grant a Lien or any lease, conditional sale or other title
retention agreement having substantially the same economic effect as any of the
foregoing) upon or with respect to any property of any kind; provided, however,
"Lien" shall not include rights created in a third Person in connection with the
creation by the Company or a Subsidiary of a Production Payment. A Person shall
be deemed to own subject to a Lien any property which such Person has acquired
or holds subject to the interest of a vendor or lessor under any conditional
sale agreement, capital lease or other title retention agreement.

     "Material Change" means an increase or decrease (excluding changes that
result solely from changes in prices) of more than 50% during a fiscal quarter
in the estimated discounted future net cash flows from proved oil and gas
reserves of the Company and its Restricted Subsidiaries, calculated in
accordance with clause (1) (a) of the definition of Adjusted Consolidated Net
Tangible Assets; provided, however, that the following will be excluded from the
calculation of Material Change:

the estimated discounted future net cash flows from:

(1)  any acquisitions during the quarter of oil and gas reserves that have been
     audited by a nationally recognized firm of independent petroleum engineers
     and

(2)  any disposition of properties held at the beginning of such quarter that
     have been disposed of as provided in the covenant described under the
     caption "-- Limitation on Disposition of Proceeds of Asset Sales."

     "Material Restricted Subsidiary" means, at any particular time:

(1)  any Subsidiary Guarantor and

(2)  any other Restricted Subsidiary that, together with its Subsidiaries:

     (a) accounted for more than 10% of the consolidated revenues of the Company
         and its Restricted Subsidiaries for the most recently completed fiscal
         year of the Company or

     (b) was the owner of more than 10% of the consolidated assets of the
         Company and its Restricted Subsidiaries at the end of such fiscal year,
         all as shown in the case of (a) and (b) on the consolidated financial
         statements of the Company and its Restricted Subsidiaries for such
         fiscal year.

                                       63


     "Maturity" means, with respect to any note, the date on which any principal
of such note becomes due and payable as provided therein or in the Indenture,
whether at the Stated Maturity with respect to such principal or by declaration
of acceleration, call for redemption or purchase or otherwise.

     "Moody's" means Moody's Investors Service, Inc. and its successors.

     "Net Cash Proceeds" means, with respect to any Asset Sale, the proceeds
thereof received by the Company or any Restricted Subsidiary in the form of cash
or Cash Equivalents (including payments in respect of deferred payment
obligations when received in the form of cash or Cash Equivalents (except to the
extent that such obligations are financed or sold with recourse to the Company
or any Restricted Subsidiary)), net of:

(1)  brokerage commissions and other fees and expenses (including fees and
     expenses of engineers, legal counsel, accountants and investment banks)
     related to such Asset Sale,

(2)  provisions for all taxes payable as a result of such Asset Sale,

(3)  amounts required to be paid (a) to any minority interest holder or other
     Person (other than the Company or any Restricted Subsidiary) owning a
     beneficial interest in the assets subject to the Asset Sale or (b) in
     respect of any Indebtedness (other than Indebtedness under the Credit
     Agreement) secured by a Lien on any of the properties or assets that were
     the subject of such Asset Sale and

(4)  appropriate amounts to be provided by the Company or any Restricted
     Subsidiary, as the case may be, as a reserve required in accordance with
     GAAP consistently applied against any liabilities associated with such
     Asset Sale and retained by the Company or any Restricted Subsidiary, as the
     case may be, after such Asset Sale, including, without limitation, pension
     and other post-employment benefit liabilities, liabilities related to
     environmental matters and liabilities under any indemnification obligations
     associated with such Asset Sale, all as reflected in an Officers'
     Certificate delivered to the Trustee; provided, however, that any amounts
     remaining after adjustments, revaluations or liquidations of such reserves
     shall constitute Net Cash Proceeds.

     Notwithstanding the foregoing, to the extent that any or all of the Net
Cash Proceeds of any Foreign Asset Sale is prohibited or delayed from being
repatriated to the United States of America pursuant to applicable local law
despite reasonable effort by the Company or such Restricted Subsidiary to
exclude or release those funds from such restrictions, the portion of such Net
Cash Proceeds so affected shall be deemed excluded from Net Cash Proceeds so
long as the applicable local law does not permit repatriation to the United
States of America. Once repatriation of those funds is permitted under the
applicable local law, those funds shall then constitute Net Cash Proceeds and be
subject to the provisions of the Indenture described under "----Limitation on
Disposition of Proceeds of Asset Sales" as if the subject Foreign Asset Sale had
occurred on the date that such repatriation became permissible under applicable
local law. Furthermore, to the extent that the Board of Directors of the Company
determines, in good faith, that repatriation of any or all of the Net Cash
Proceeds of any Foreign Asset Sale would have a material adverse tax consequence
to the Company, the funds so affected shall be excluded from Net Cash Proceeds
until such time as the Board of Directors shall determine that such material
adverse tax consequences no longer exist, whereupon those funds shall then
constitute Net Cash Proceeds and be subject to the provisions of the Indenture
described under "----Limitation on Disposition of Proceeds of Asset Sales" as if
the subject Foreign Asset Sale had occurred on the date that the Board of
Directors makes the determination that such tax consequences no longer exist.

     "Net Working Capital" means:

(1)  all current assets of the Company and its Restricted Subsidiaries, minus

(2)  all current liabilities of the Company and its Restricted Subsidiaries,
     except current liabilities included in Indebtedness, in each case as set
     forth in financial statements of the Company prepared in accordance with
     GAAP.

     "Non-Recourse Indebtedness" means Indebtedness or that portion of
Indebtedness of the Company or a Restricted Subsidiary incurred in connection
with the acquisition by the Company or a Restricted Subsidiary of any property
or assets and as to which:

                                       64


(1)  the holders of such Indebtedness agree that they will look solely to the
     property or assets so acquired and securing such Indebtedness for payment
     on or in respect of such Indebtedness and

(2)  no default with respect to such Indebtedness would permit (after notice or
     passage of time or both), according to the terms of any other Indebtedness
     of the Company or a Restricted Subsidiary, any holder of such other
     Indebtedness to declare a default under such other Indebtedness or cause
     the payment of such other Indebtedness to be accelerated or payable prior
     to its stated maturity.

     "Note Obligations" means any principal of, premium, if any, and interest
on, and any other amounts (including, without limitation, any payment
obligations with respect to the notes as a result of any Asset Sale, Change of
Control or redemption) owing in respect of, the notes payable pursuant to the
terms of the notes or the Indenture or upon acceleration of the notes.

     "Note Register" means the register maintained by or for the Company in
which the Company shall provide for the registration of the notes and of
transfer of the notes.

     "Officers' Certificate" means a certificate delivered to the Trustee signed
by the Chairman, the President, a Vice President or the Chief Financial Officer,
and by the Treasurer, an Assistant Treasurer, the Secretary or an Assistant
Secretary of the Company.

     "Oil and Gas Business" means:

(1)  the acquisition, exploration, exploitation, development, operation and
     disposition of interests in oil, gas and other hydrocarbon properties,

(2)  the gathering, marketing, treating, processing, storage, refining, selling
     and transporting of any production from such interests or properties,

(3)  any business relating to or arising from exploration for or exploitation,
     development, production, treatment, processing, storage, refining,
     transportation or marketing of oil, gas and other minerals and products
     produced in association therewith,

(4)  any other related energy business, including power generation and
     electrical transmission business in a jurisdiction outside North America
     where fuel required by such business is supplied, directly or indirectly,
     from hydrocarbons produced substantially from properties in which the
     Company or its Restricted Subsidiaries, directly or indirectly,
     participates, and

(5)  any activity necessary, appropriate or incidental to the activities
     described in the preceding clauses (1) through (4) of this definition.

     "Opinion of Counsel" means a written opinion of legal counsel for the
Company (or any Subsidiary Guarantor, if applicable) including an employee of
the Company (or any Subsidiary Guarantor, if applicable), who is reasonably
acceptable to the Trustee.

     "Pari Passu Indebtedness" means:

(1)  the Company's 10 3/8% Senior Subordinated Notes due 2009 issued under the
     Indenture dated as of January 15, 1999 between the Company and State Street
     Bank and Trust Company,

(2)  the Company's 8 3/4% Senior Subordinated Notes due 2007 issued under the
     Indenture dated as of May 15, 1997 between the Company and Fleet National
     Bank (now State Street Bank and Trust Company), as Trustee, and

(3)  any other Indebtedness of the Company that is pari passu in right of
     payment to the notes.

     "Permitted Indebtedness" means any of the following:

                                       65


     (1)  Indebtedness of the Company under one or more bank credit or revolving
credit facilities in an aggregate principal amount at any one time outstanding
not to exceed:

            (a) the greater of: (i) $515,000,000 and (ii) an amount equal to the
       sum of (A) $400,000,000 and (B) 10% of Adjusted Consolidated Net Tangible
       Assets determined as of the date of the most recent quarterly
       consolidated financial statements of the Company and its Restricted
       Subsidiaries, less

            (b) the amount of Net Cash Proceeds applied to reduce Indebtedness
       pursuant to the covenant of the Indenture described under the caption "--
       Limitation on Disposition of Proceeds of Asset Sales" (together with
       interest and fees under such facilities, the "Maximum Credit Amount,"
       with the Maximum Credit Amount being an aggregate maximum amount for the
       Company and all Guarantor Subsidiaries, pursuant to clause (1) of the
       definition of "Permitted Subsidiary Indebtedness"), and any renewals,
       amendments, extensions, supplements, modifications, deferrals,
       refinancings or replacements (each, for purposes of this clause, a
       "refinancing") thereof by the Company, including any successive
       refinancings thereof by the Company, so long as the aggregate principal
       amount of any such new Indebtedness, together with the aggregate
       principal amount of all other Indebtedness outstanding pursuant to this
       clause (1) (and clause (1) of the definition of "Permitted Subsidiary
       Indebtedness"), shall not at any one time exceed the Maximum Credit
       Amount;

     (2)  Indebtedness of the Company under the notes;

     (3)  Indebtedness of the Company outstanding on the date of the Indenture
(and not repaid or defeased with the proceeds of the Company's sale of the
outstanding notes);

     (4)  obligations of the Company pursuant to Interest Rate Protection
Obligations, but only to the extent the notional principal amount of such
obligations does not exceed 105% of the aggregate principal amount of the
Indebtedness covered by such Interest Rate Protection Obligations; obligations
under currency exchange contracts entered into in the ordinary course of
business; and Hedging Obligations;

     (5)  Indebtedness of the Company to any Restricted Subsidiaries or B8/32
Partners and guarantees by the Company of Permitted Subsidiary Indebtedness;

     (6)  in-kind obligations relating to net oil or gas balancing positions
arising in the ordinary course of business and consistent with past practice;

     (7)  Indebtedness in respect of bid, performance or surety bonds issued or
other reimbursement obligations for the account of the Company in the ordinary
course of business, including guarantees and letters of credit supporting such
Indebtedness in respect of bid, performance, surety bonds or other reimbursement
obligations (in each case other than for an obligation for money borrowed);

     (8)  Non-Recourse Indebtedness;

     (9)  Indebtedness incurred in respect of any letters of credit in the
ordinary course of business of the Company or reimbursement obligations in
respect thereof;

     (10) any renewals, extensions, substitutions, refinancings or replacements
(each, for purposes of this clause, a "refinancing") by the Company of any
Indebtedness of the Company described in clauses (2) or (3) above, including any
successive refinancings by the Company, so long as (a) any such new Indebtedness
shall be in a principal amount that does not exceed the principal amount (or, if
such Indebtedness being refinanced provides for an amount less than the
principal amount thereof to be due and payable upon a declaration of
acceleration thereof, such lesser amount as of the date of determination) so
refinanced plus the amount of any premium required to be paid in connection with
such refinancing pursuant to the terms of the Indebtedness refinanced or the
amount of any premium reasonably determined by the Company as necessary to
accomplish such refinancing, plus the amount of expenses of the Company incurred
in connection with such refinancing, and (b) in the case of any refinancing of
Subordinated Indebtedness, such new Indebtedness is made subordinate to the
notes at least to the same extent as the Indebtedness being refinanced and (c)
such new Indebtedness has an Average Life equal to or longer than the Average
Life of the

                                       66


Indebtedness being refinanced and a final Stated Maturity equal to or later than
the final Stated Maturity of the Indebtedness being refinanced;

     (11) other Indebtedness of the Company in an aggregate principal amount not
in excess of $40,000,000 at any one time outstanding.

     "Permitted Investments" means any of the following:

     (1)  Investments in Cash Equivalents;

     (2)  Investments in the Company or any of its Restricted Subsidiaries or
B8/32 Partners;

     (3)  Investments by the Company or any of its Restricted Subsidiaries in
another Person, if as a result of such Investment (a) such other Person becomes
a Restricted Subsidiary of the Company or (b) such other Person is merged or
consolidated with or into, or transfers or conveys all or substantially all of
its properties and assets to, the Company or a Restricted Subsidiary;

     (4)  entry into operating agreements, partnership agreements, joint
ventures, working interests, royalty interests, mineral leases, processing
agreements, farm-out agreements, contracts for the sale, transportation or
exchange of oil and natural gas, unitization agreements, pooling arrangements,
area of mutual interest agreements, development agreements, joint ownership
arrangements and other similar or customary agreements, transactions,
properties, interests and arrangements, whether or not any such Investment
involves or results in the creation of a legal entity, and Investments and
expenditures in connection therewith or pursuant thereto, in each case made or
entered into in the ordinary course of the Company or its Restricted
Subsidiaries' Oil and Gas Business;

     (5)  entry into any arrangement pursuant to which the Company or any of its
Restricted Subsidiaries may incur Hedging Obligations; and

     (6)  other Investments having an aggregate fair market value (measured on
the date each such Investment was made without giving effect to subsequent
changes in value), when taken together with all other Investments made pursuant
to this clause (6) that are at the time outstanding (net of repayments,
dividends and distributions received with respect to such Investments), not to
exceed $50,000,000 at any one time outstanding.

     "Permitted Liens" means the following types of Liens:

     (1)  Liens existing as of the date the notes are first issued;

     (2)  Liens securing the notes;

     (3)  Liens in favor of the Company or a Subsidiary Guarantor;

     (4)  Liens securing Senior Indebtedness or Guarantor Senior Indebtedness;

     (5)  Liens for taxes, assessments and governmental charges or claims either
(a) not delinquent or (b) contested in good faith by appropriate proceedings and
as to which the Company or its Restricted Subsidiaries shall have set aside on
its books such reserves as may be required pursuant to GAAP;

     (6)  statutory Liens of landlords and Liens of carriers, warehousemen,
mechanics, suppliers, materialmen, repairmen and other Liens imposed by law
incurred in the ordinary course of business for sums not delinquent or being
contested in good faith, if such reserve or other appropriate provision, if any,
as shall be required by GAAP shall have been made in respect thereof;

     (7)  Liens incurred and deposits made in the ordinary course of business in
connection with workers' compensation, unemployment insurance and other types of
social security, and Liens incurred and deposits made to secure the payment or
performance of tenders, statutory or regulatory obligations, surety and appeal
bonds, bids, leases, government contracts and leases, trade contracts (other
than to secure an obligation for borrowed money), performance and return of
money bonds and other similar obligations (exclusive of obligations for the
payment of

                                       67


borrowed money but including lessee and operator obligations under statutes,
governmental regulations or instruments related to the ownership, exploration
and production of oil, gas and minerals on state, federal or foreign lands or
waters);

     (8)  pre-judgment Liens and judgment Liens not giving rise to an Event of
Default so long as any appropriate legal proceedings which may have been duly
initiated for the review of such judgment shall not have been finally terminated
or the period within which such proceeding may be initiated shall not have
expired;

     (9)  any interest or title of a lessor under any Capitalized Lease
Obligation or operating lease;

     (10) Liens resulting from the deposit of funds or evidences of Indebtedness
in trust for the purpose of defeasing Indebtedness of the Company or any of the
Subsidiaries; customary Liens for the fees, costs and expenses of trustees and
escrow agents pursuant to the indenture, escrow agreement or other similar
agreement establishing such trust or escrow arrangement; and Liens pursuant to
merger agreements, stock purchase agreements, asset sale agreements and similar
agreements (a) limiting the transfer of properties and assets pending
consummation of the subject transaction or (b) in respect of earnest money
deposits, good faith deposits, purchase price adjustment escrows or similar
deposits or escrow arrangements made or established thereunder;

     (11) Liens securing any Hedging Obligations of the Company or any
Restricted Subsidiary;

     (12) Liens upon specific items of inventory or other goods and proceeds of
any Person securing such Person's obligations in respect of bankers' acceptances
issued or created for the account of such Person to facilitate the purchase,
shipment or storage of such inventory or other goods;

     (13) Liens securing reimbursement obligations with respect to commercial
letters of credit which encumber documents and other property relating to such
letters of credit and products and proceeds thereof;

     (14) Liens encumbering property or assets under construction arising from
progress or partial payments by a customer of the Company or its Restricted
Subsidiaries relating to such property or assets and Liens to secure
Indebtedness used to finance all or a part of the construction of property or
assets used by the Company or any of its Restricted Subsidiaries in the Oil and
Gas Business, provided, that such Liens do not extend to any other property or
assets owned by the Company or its Restricted Subsidiaries;

     (15) Liens encumbering deposits made to secure obligations arising from
statutory, regulatory, contractual or warranty requirements of the Company or
any of its Restricted Subsidiaries, including rights of offset and set-off;

     (16) Liens securing Interest Rate Protection Obligations which Interest
Rate Protection Obligations relate to Indebtedness that is secured by Liens
otherwise permitted under this Indenture;

     (17) Liens on, or related to, properties or assets to secure all or part of
the costs incurred in the ordinary course of business for the exploration,
drilling, development or operation thereof;

     (18) Liens on pipeline or pipeline facilities which arise out of operation
of law;

     (19) Liens arising under operating agreements, partnership agreements,
joint ventures, working interests, royalty interests, mineral leases, processing
agreements, farm-out agreements, contracts for the sale, transportation or
exchange of oil and natural gas, unitization agreements, pooling arrangements,
area of mutual interest agreements, development agreements, joint ownership
arrangements and other similar or customary agreements, transactions,
properties, interests and arrangements, whether or not any of same involves or
results in the creation of a legal entity, in each case entered into in the
ordinary course of the Company or its Restricted Subsidiaries' Oil and Gas
Business;

     (20) Liens reserved in oil and gas mineral leases for bonus or rental
payments and for compliance with the terms of such leases;

     (21) Liens constituting survey exceptions, encumbrances, easements, or
reservations of, or rights to others for, rights-of-way, zoning restrictions and
other similar charges and encumbrances as to the use of real properties, and
minor defects of title which, in the case of any of the foregoing, were not
incurred or created to secure the payment of

                                       68


borrowed money or the deferred purchase price of property, assets or services,
and in the aggregate do not interfere in any material respect with the ordinary
conduct of the business of the Company or its Restricted Subsidiaries;

     (22) rights reserved to or vested in any municipality or governmental,
statutory or public authority by the terms of any right, power, franchise,
grant, license or permit, or by any provision of law, to terminate such right,
power, franchise, grant, license or permit or to purchase, condemn, expropriate
or recapture or to designate a purchaser of any of the property of such Person;
rights reserved to or vested in any municipality or governmental, statutory or
public authority to control or regulate any property of such Person, or to use
such property in a manner which does not materially impair the use of such
property for the purposes for which it is held by such Person; any obligation or
duties affecting the property of such Person to any municipality or
governmental, statutory or public authority with respect to any franchise,
grant, license or permit;

     (23) Liens securing Non-Recourse Indebtedness; provided, however, that the
related Non-Recourse Indebtedness shall not be secured by any property or assets
of the Company or any Restricted Subsidiary other than the property and assets
acquired by the Company with the proceeds of such Non-Recourse Indebtedness; and

     (24) Liens securing Acquired Indebtedness; provided, however, that any such
lien extends only to the properties or assets that were subject to such Lien
prior to the related acquisition by the Company or such Restricted Subsidiary
and was not created, incurred or assumed in contemplation of such transaction.

Notwithstanding anything in clauses (1) through (24) of this definition, the
term "Permitted Liens" does not include any Liens resulting from the creation,
incurrence, issuance, assumption or guarantee of any Production Payments other
than Production Payments that are created, incurred, issued, assumed or
guaranteed in connection with the financing of, and within 30 days after, the
acquisition of the properties or assets that are subject thereto.

     "Permitted Subsidiary Indebtedness" means any of the following:

     (1)  Indebtedness of any Guarantor Subsidiary under one or more bank credit
or revolving credit facilities (and "refinancings" thereof) in an amount at any
one time outstanding not to exceed the Maximum Credit Amount (in the aggregate
for all Guarantor Subsidiaries and the Company, pursuant to clause (1) of the
definition of "Permitted Indebtedness");

     (2)  Indebtedness of any Restricted Subsidiary outstanding on the date of
the Indenture;

     (3)  obligations of any Restricted Subsidiary pursuant to Interest Rate
Protection Obligations, but only to the extent the notional principal amount of
such obligations does not exceed 105% of the aggregate principal amount of the
Indebtedness covered by such Interest Rate Protection Obligations; and Hedging
Obligations of any Restricted Subsidiary;

     (4)  the Subsidiary Guarantees (and any assumption of the obligations
guaranteed thereby);

     (5)  Indebtedness of any Restricted Subsidiary relating to guarantees by
such Restricted Subsidiary of Permitted Indebtedness;

     (6)  in-kind obligations relating to net oil or gas balancing positions
arising in the ordinary course of business and consistent with past practice;

     (7)  Indebtedness in respect of bid, performance or surety bonds or other
reimbursement obligations issued for the account of any Restricted Subsidiary in
the ordinary course of business, including guarantees and letters of credit
supporting such Indebtedness in respect of bid, performance, surety bonds or
other reimbursement obligations (in each case other than for an obligation for
money borrowed);

     (8)  Indebtedness of any Restricted Subsidiary to any other Restricted
Subsidiary, to B8/32 Partners or to the Company;

                                       69


     (9)  Indebtedness relating to guarantees by any Restricted Subsidiary
permitted to be incurred pursuant to paragraph (a) of the provisions of the
Indenture described under the caption "-- Limitation on Non-Guarantor Restricted
Subsidiaries";

     (10) Indebtedness incurred in respect of letters of credit in the ordinary
course of business of any Restricted Subsidiary or reimbursement obligation in
respect thereof;

     (11) Non-Recourse Indebtedness;

     (12) any renewals, extensions, substitutions, refinancings or replacements
(each, for purposes of this clause, a "refinancing") by any Restricted
Subsidiary of any Indebtedness of such Restricted Subsidiary including any
successive refinancings by such Restricted Subsidiary, so long as (a) any such
new Indebtedness shall be in a principal amount that does not exceed the
principal amount (or, if such Indebtedness being refinanced provides for an
amount less than the principal amount thereof to be due and payable upon a
declaration of acceleration thereof, such lesser amount as of the date of
determination) so refinanced plus the amount of any premium required to be paid
in connection with such refinancing pursuant to the terms of the Indebtedness
refinanced or the amount of any premium reasonably determined by such Restricted
Subsidiary as necessary to accomplish such refinancing, plus the amount of
expenses of such Subsidiary incurred in connection with such refinancing and (b)
such new Indebtedness has an Average Life equal to or longer than the Average
Life of the Indebtedness being refinanced and a final Stated Maturity equal to
or later than the final Stated Maturity of the Indebtedness being refinanced;
and

     (13) other Indebtedness incurred by one or more Restricted Subsidiaries
that are not Guarantor Subsidiaries in an aggregate principal amount not to
exceed $50,000,000 at any time outstanding.

     "Person" means any individual, corporation, limited liability company,
partnership, joint venture, association, joint stock company, trust,
unincorporated organization or government or any agency or political subdivision
thereof.

     "Preferred Stock" means, with respect to any Person, any and all shares,
interests, participations or other equivalents (however designated) of such
Person's preferred or preference stock, whether now outstanding or issued after
the date of the Indenture, including, without limitation, all classes and series
of preferred or preference stock of such Person.

     "Production Payments" means, collectively, Dollar-Denominated Production
Payments and Volumetric Production Payments.

     "Public Market" exists at any time with respect to the Qualified Capital
Stock of the Company if such Qualified Capital Stock of the Company is then:

(1)  registered with the SEC pursuant to Section 12(b) or 12(g) of the Exchange
Act and

(2)  traded either on a national securities exchange or on the NASDAQ Stock
Market.

     "Qualified Capital Stock" of any Person means any and all Capital Stock of
such Person other than Redeemable Capital Stock.

     "Qualified Redemption Transaction" means a call for redemption of any
Capital Stock or Subordinated Indebtedness (including any Subordinated
Indebtedness accounted for as a minority interest of the Company that is held by
a Subsidiary that is a business trust or similar entity formed for the primary
purpose of issuing preferred securities the proceeds of which are loaned to the
Company or a Restricted Subsidiary) that by its terms is convertible into Common
Stock of the Company if on the date of notice of such call for redemption:

(1)  a Public Market exists in the shares of Common Stock of the Company and

(2)  the average closing price on the Public Market for shares of Common Stock
     of the Company for the twenty trading days immediately preceding the date
     of such notice exceeds 120% of the conversion price per share (determined
     by reference to the redemption price) of Common Stock of the Company
     issuable upon conversion of the Capital Stock or Subordinated Indebtedness
     called for redemption.

                                       70


     "Redeemable Capital Stock" means any class or series of Capital Stock that,
either by its terms, by the terms of any security into which it is convertible
or exchangeable or by contract or otherwise, is, or upon the happening of an
event or passage of time would be, required to be redeemed prior to 91 days
after the final Stated Maturity of the notes or is redeemable at the option of
the holder thereof at any time prior to 91 days after such final Stated
Maturity, or is convertible into or exchangeable for debt securities at any time
prior to 91 days after such final Stated Maturity.

     "Regular Record Date" for the interest payable on any Interest Payment Date
means April 1 or October 1 (whether or not a business day, as the case may be)
next preceding each such Interest Payment Date.

     "Restricted Subsidiary" means any Subsidiary of the Company, whether
existing on or after the date of the Indenture, unless such Subsidiary of the
Company is an Unrestricted Subsidiary or is designated as an Unrestricted
Subsidiary pursuant to the terms of the Indenture.

     "S&P" means Standard and Poor's Ratings Services, a division of The McGraw-
Hill Companies, Inc., and its successors.

     "Sale/Leaseback Transaction" means, with respect to any Person, any direct
or indirect arrangement pursuant to which properties or assets are sold or
transferred by such Person or a Subsidiary of such Person and are thereafter
leased back from the purchaser or transferee thereof by such Person or one of
its Subsidiaries other than:

(1)  a transaction whereby property or assets are sold or transferred by the
     Company or any of its Restricted Subsidiaries to any Affiliate of the
     Company or pursuant to any Permitted Investment constituting a joint
     ownership arrangement, which property or assets are leased back, directly
     or indirectly, to the Company, any Affiliate of the Company or to the
     constituent parties to any such joint venture arrangement,

(2)  temporary leases for a term, including renewals at the option of the
     lessee, of not more than five years and

(3)  leases between the Company and a Restricted Subsidiary or between
     Restricted Subsidiaries.

     "Senior Indebtedness" means the principal of, premium, if any, and interest
on any Indebtedness of the Company (including, in the case of the Credit
Agreement, interest accruing after the filing of a petition by or against the
Company under any bankruptcy law, in accordance with and at the rate, including
any default rate, specified with respect to such indebtedness, whether or not a
claim for such interest is allowed as a claim after such filing in any
proceeding under such bankruptcy law), whether outstanding on the date of the
Indenture or thereafter created, incurred or assumed, unless, in the case of any
particular Indebtedness, the instrument creating or evidencing the same or
pursuant to which the same is outstanding expressly provides that such
Indebtedness shall not be senior in right of payment to the notes.
Notwithstanding the foregoing, "Senior Indebtedness" shall not include:

(1)  Indebtedness evidenced by the notes,

(2)  Indebtedness that is expressly subordinate or junior in right of payment to
     any Senior Indebtedness of the Company,

(3)  Indebtedness which, when incurred and without respect to any election under
     Section 1111(b) of Title 11 United States Code, is by its terms without
     recourse to the Company or which is Non-Recourse Indebtedness,

(4)  any repurchase, redemption or other obligation in respect of Redeemable
     Capital Stock of the Company,

(5)  to the extent it might constitute Indebtedness, any liability for federal,
     state, local or other taxes owed or owing by the Company,

(6)  Indebtedness of the Company to a Subsidiary of the Company or any other
     Affiliate of the Company or any of such Affiliate's Subsidiaries and

(7)  that portion of any Indebtedness of the Company which at the time of
     issuance is issued in violation of the Indenture (but, as to any such
     Indebtedness, no such violation shall be deemed to exist for purposes of
     this clause (7) if the holder(s) of such Indebtedness or their
     representative or the Company shall have furnished to the

                                       71


     Trustee an Opinion of Counsel addressed to the Trustee (which counsel may,
     as to matters of fact, rely upon a certificate of the Company) to the
     effect that the incurrence of such Indebtedness does not violate the
     provisions of such Indenture);

provided, that the preceding exclusions shall not affect the priorities of any
Indebtedness arising solely by operation of law in any case or proceeding or
similar event described in clause (1), (2) or (3) of the second paragraph under
the caption "-- Subordination."

     "Stated Maturity" means, when used with respect to any note or any
installment of interest thereon, the date specified in such note as the fixed
date on which the principal of such note or such installment of interest is due
and payable, and, when used with respect to any other Indebtedness or any
installment of interest thereon, means the date specified in the instrument
evidencing or governing such Indebtedness as the fixed date on which the
principal of such Indebtedness or such installment of interest is due and
payable.

     "Subordinated Indebtedness" means:

(1)  Company's 6 1/2% Junior Subordinated Debentures due 2029 issued under the
     Indenture dated as of June 1, 1999, between the Company and Wilmington
     Trust Company, as Trustee,

(2)  the Company's 5 1/2% Convertible Subordinated Notes due 2006 issued under
     the Indenture dated as of June 15, 1996, between the Company and Fleet
     National Bank (now State Street Bank and Trust Company), as Trustee and

(3)  other Indebtedness of the Company which, by its terms, is subordinated in
     right of payment to the notes.

     "Subsidiary" means, with respect to any Person, a corporation, partnership,
limited liability company, association or other business entity a majority of
whose Voting Stock is at the time, directly or indirectly owned by such Person,
by one or more Subsidiaries of such Person or by such Person and one or more
Subsidiaries thereof. For purposes of the foregoing definition, an arrangement
by which a Person who owns an interest in an oil and gas property is subject to
a joint operating agreement, processing agreement, net profits, interest,
overriding royalty interest, farmout agreement, development agreement, area of
mutual interest agreement, joint bidding agreement, unitization agreement,
pooling arrangement or other similar agreement or arrangement shall not, in and
of itself, be considered a Subsidiary.

     "Subsidiary Guarantee" means any guarantee of the notes by any Restricted
Subsidiary in accordance with the provisions set forth in the covenant described
under the caption "-- Limitation on Non-Guarantor Restricted Subsidiaries."

     "Subsidiary Guarantor" means each of the Company's Restricted Subsidiaries
that becomes a guarantor of the notes in compliance with the provisions
described under the caption "-- Limitation on Non-Guarantor Restricted
Subsidiaries" or otherwise executes a supplemental indenture in which such
Subsidiary agrees to be bound by the terms of the Indenture and to guarantee the
payment of the notes pursuant to the provisions described under the caption "--
Possible Subsidiary Guarantees of the Notes."

     "Unrestricted Subsidiary" means:

(1)  Pogo Trust I, a Delaware business trust, and any other Subsidiary of the
     Company that at the time of determination will similarly be designated an
     Unrestricted Subsidiary by the Board of Directors of the Company as
     provided below and

(2)  any Subsidiary of an Unrestricted Subsidiary. The Board of Directors of the
     Company may designate any Subsidiary of the Company as an Unrestricted
     Subsidiary so long as:

     (a) neither the Company nor any Restricted Subsidiary is directly or
         indirectly liable pursuant to the terms of any Indebtedness of such
         Subsidiary;

                                       72


     (b) no default with respect to any Indebtedness of such Subsidiary would
         permit (upon notice, lapse of time or otherwise) any holder of any
         other Indebtedness of the Company or any Restricted Subsidiary to
         declare a default on such other Indebtedness or cause the payment
         thereof to be accelerated or payable prior to its stated maturity;

     (c) neither the Company nor any Restricted Subsidiary has made an
         Investment in such Subsidiary unless such Investment was made pursuant
         to, and in accordance with, the covenant described under the caption
         "-- Limitation on Restricted Payments" (other than Investments of the
         type described in clause (4) of the definition of "Permitted
         Investments"); and

     (d) such designation shall not result in the creation or imposition of any
         Lien on any of the Properties of the Company or any Restricted
         Subsidiary (other than any Permitted Lien or any Lien the creation or
         imposition of which shall have been in compliance with the covenant
         described under the caption "-- Limitation on Liens");

provided, however, that with respect to clause (a) of this sentence, the Company
or a Restricted Subsidiary may be liable for Indebtedness of an Unrestricted
Subsidiary if:

(i)  such liability constituted a Permitted Investment or a Restricted Payment
     permitted by the provisions of the Indenture described under the caption
     "-- Limitation on Restricted Payments," in each case at the time of
     incurrence, or

(ii) the liability would be a Permitted Investment at the time of designation of
     such Subsidiary as an Unrestricted Subsidiary.

Any such designation by the Board of Directors shall be evidenced to the Trustee
by filing a resolution with the Trustee giving effect to such designation. For
the avoidance of doubt, it is understood that Pogo Trust I referred to above, at
the time of its designation as an Unrestricted Subsidiary, satisfied the
foregoing conditions as would any substantially similar Subsidiaries of the
Company formed to engage in similar activities as Pogo Trust I.

     The Board of Directors may designate any Unrestricted Subsidiary as a
Restricted Subsidiary if, immediately after giving effect to such designation:

(1)  no Default or Event of Default shall have occurred and be continuing,

(2)  the Company could incur $1.00 of additional Indebtedness (other than
     Permitted Indebtedness) under the first paragraph of the covenant described
     above under the caption "-- Limitation on Indebtedness" and

(3)  if any of the Properties of the Company or any of its Restricted
     Subsidiaries would upon such designation become subject to any Lien (other
     than a Permitted Lien), the creation or imposition of such Lien shall have
     been in compliance with the covenant described under the caption "--
     Limitations on Liens."

     "Volumetric Production Payments" means production payment obligations
recorded as deferred revenue in accordance with GAAP, together with all
undertakings and obligations in connection therewith.

     "Voting Stock" means any class or classes of Capital Stock pursuant to
which the holders thereof have the general voting power under ordinary
circumstances to vote in the election of the directors, managers or trustees of
any Person (irrespective of whether or not, at the time, Capital Stock of any
other class or classes shall have, or might have, voting power by reason of the
happening of any contingency).

     "Wholly Owned Restricted Subsidiary" means any Restricted Subsidiary to the
extent:

(1)  all of the Capital Stock in such Restricted Subsidiary, other than any
     directors qualifying shares or other shares whose ownership by other
     Persons is mandated by applicable law, is owned directly or indirectly by
     the Company or

                                       73


(2)  such Restricted Subsidiary is organized in a foreign jurisdiction and is
     required by the applicable laws and regulations of such foreign
     jurisdiction to be partially owned by the government of such foreign
     jurisdiction or individual or corporate citizens in order for such
     Restricted Subsidiary to transact business in such foreign jurisdiction,
     provided, that the Company, directly or indirectly, owns the remaining
     Capital Stock or ownership interest in such Restricted Subsidiary and, by
     contract or otherwise, controls the management and business of such
     Restricted Subsidiary and derives the economic benefits of ownership of
     such Restricted Subsidiary to substantially the same extent as if such
     Restricted Subsidiary were a wholly owned Subsidiary.

                Outstanding Notes Registration Rights Agreement

     In connection with the sale of the outstanding notes, we entered into a
registration rights agreement. Under that agreement, we agreed to use our
reasonable best efforts to:

     .    file a registration statement with the SEC with respect to an offer to
          exchange the outstanding notes for new notes having substantially
          identical terms as the outstanding notes (except that the new notes
          will not contain terms with respect to transfer restrictions or
          interest rate increases)

     .    cause that registration statement to be declared effective under the
          Securities Act within 135 days of the date of original issuance of the
          outstanding notes

     .    keep that registration statement effective until the closing of the
          exchange offer

     .    cause the exchange offer to be consummated within 180 days following
          the original issuance of the outstanding notes

     Promptly after the exchange offer registration statement has been declared
effective, we will offer the outstanding notes in exchange for surrender of the
new notes.

     Under the following circumstances, we will file with the SEC a shelf
registration statement to cover resales of the outstanding notes by those
holders who provide required information in connection with the shelf
registration statement:

     .    if any changes in law or the applicable interpretations of the staff
          of the SEC do not permit us to effect the exchange offer as
          contemplated by the registration rights agreement

     .    if for any reason the exchange offer registration statement is not
          declared effective within 135 days after the date of original issuance
          of the outstanding notes

     .    if the exchange offer is not consummated within 180 days after the
          date of original issuance of the outstanding notes

     .    in certain circumstances, at the request of the initial purchaser of
          outstanding notes

     A "Registration Default" will occur if, among other things:

     .    the exchange offer registration statement is not declared effective on
          or prior to the 135th day following the date of original issuance of
          the outstanding notes

     .    the exchange offer is not consummated or a shelf registration
          statement with respect to the notes is not declared effective on or
          prior to the 180th day following the date of original issuance of the
          outstanding notes

     .    we file the exchange offer registration statement or shelf
          registration statement and the SEC declares it effective, but
          afterward we withdraw it, or it becomes subject to an effective stop
          order suspending the effectiveness of such registration statement
          (except as specifically permitted in the registration rights
          agreement) without being succeeded immediately by an additional
          registration statement filed and declared effective

                                       74


     .    we effect a suspension of offers and sales under the shelf
          registration statement for more than 60 days, whether or not
          consecutive, within any period of 12 consecutive months

     If any Registration Default occurs, we will be obligated to pay additional
interest to each holder of outstanding notes at a rate equal to 0.50% per annum.
This rate will continue until all registration defaults have been cured (and, if
applicable, the suspension of offers and sales of notes under the shelf
registration statement ceases).

     Holders who desire to tender their outstanding notes will be required to
make to the Company the representations described under "The Exchange Offer --
Purpose and Effect of the Exchange Offer" and "-- Procedures for Tendering" in
order to participate in the exchange offer. In addition, we may require holders
to deliver information to be used in connection with the shelf registration
statement in order to have their notes included in the shelf registration
statement and benefit from the provisions regarding additional interest
described in the preceding paragraphs. A holder who sells outstanding notes
under the shelf registration statement generally will be required to be named as
a selling securityholder in the related prospectus and to deliver a prospectus
to purchasers. Such a holder will also be subject to the civil liability
provisions under the Securities Act in connection with such sales and will be
bound by the provisions of the registration rights agreement that are applicable
to such holder, including indemnification obligations.

     The description of the registration rights agreement contained in this
section is a summary only. For more information, you may review the provisions
of the registration rights agreement that the Company filed with the SEC as an
exhibit to the registration statement of which this prospectus is a part.

                         Book Entry; Delivery and Form

     The new notes will initially be represented by one or more permanent global
notes in definitive, fully registered book-entry form (the "Global Securities")
that will be registered in the name of Cede & Co., as nominee of DTC. The Global
Securities will be deposited on behalf of the acquirors of the new notes
represented thereby with a custodian for DTC for credit to the respective
accounts of the acquirors or to such other accounts as they may direct at DTC.
See "The Exchange Offer -- Book-Entry Transfer."

The Global Securities

     We expect that under procedures established by DTC

     .    upon deposit of the Global Securities with DTC or its custodian, DTC
          will credit on its internal system portions of the Global Securities
          that shall be comprised of the corresponding respective amounts of the
          Global Securities to the respective accounts of persons who have
          accounts with such depositary

     .    ownership of the notes will be shown on, and the transfer of ownership
          thereof will be effected only through, records maintained by DTC or
          its nominee, with respect to interests of persons who have accounts
          with DTC ("participants"), and the records of participants, with
          respect to interests of persons other than participants.

     So long as DTC or its nominee is the registered owner or holder of any of
the notes, DTC or such nominee will be considered the sole owner or holder of
such notes represented by the Global Securities for all purposes under the
Indenture and under the notes represented thereby. No beneficial owner of an
interest in the Global Securities will be able to transfer such interest except
in accordance with the applicable procedures of DTC in addition to those
provided for under the indenture.

     Payments on the notes represented by the Global Securities will be made to
DTC or its nominee, as the case may be, as the registered owner thereof. None of
the Company, the trustee or any paying agent under the Indenture will have any
responsibility or liability for any aspect of the records relating to or
payments made on account of beneficial ownership interests in the Global
Securities or for maintaining, supervising or reviewing any records relating to
such beneficial ownership interest.

     We expect that DTC or its nominee, upon receipt of any payment on the notes
represented by the Global Securities, will credit participants' accounts with
payments in amounts proportionate to their respective beneficial interests in
the Global Securities as shown in the records of DTC or its nominee. We also
expect that payments by

                                       75


participants to owners of beneficial interests in the Global Securities held
through such participants will be governed by standing instructions and
customary practice as is now the case with securities held for the accounts of
customers registered in the names of nominees for such customers. Such payment
will be the responsibility of such participants.

     Transfers between participants in DTC will be effected in accordance with
DTC rules and will be settled in immediately available funds. If a holder
requires physical delivery of a certificated security for any reason, including
to sell notes to persons in states that require physical delivery of such
security or to pledge such securities, such holder must transfer its interest in
the Global Securities in accordance with the normal procedures of DTC and the
procedures in the indenture.

     DTC has advised us that DTC will take any action permitted to be taken by a
holder of notes, including the presentation of notes for exchange as described
below, only at the direction of one or more participants to whose account the
DTC interests in the Global Securities are credited and only in respect of the
aggregate principal amount as to which such participant or participants has or
have given such direction. However, if there is an event of default under the
Indenture, DTC will exchange the Global Securities for certificated securities
that it will distribute to its participants.

     DTC has advised us as follows:

     .    DTC is a limited-purpose company organized under the New York Banking
          Law, a "banking organization" within the meaning of the New York
          Banking Law, a member of the Federal Reserve System, a "clearing
          corporation" within the meaning of the New York Uniform Commercial
          Code and a "clearing agency" registered under the provisions of
          Section 17A of the Securities Exchange Act of 1934

     .    DTC holds securities that its participants deposit with DTC and
          facilitates the settlement among participants of securities
          transactions, such as transfers and pledges, in deposited securities
          through electronic computerized book-entry changes in participants'
          accounts, thereby eliminating the need for physical movement of
          securities certificates

     .    Direct participants include securities brokers and dealers, banks,
          trust companies, clearing corporations and other organizations

     .    DTC is owned by a number of its participants and by the New York Stock
          Exchange, Inc., the American Stock Exchange, Inc. and the National
          Association of Securities Dealers, Inc.

     .    Access to the DTC system is also available to others such as
          securities brokers and dealers, banks and trust companies that clear
          through or maintain a custodial relationship with a direct
          participant, either directly or indirectly

     .    The rules applicable to DTC and its participants are on file with the
          SEC

     Although DTC is expected to follow these procedures in order to facilitate
transfers of interests in the Global Securities among participants of DTC, it is
under no obligation to perform such procedures, and such procedures may be
discontinued at any time. Neither the Company nor the trustee will have any
responsibility for the performance by DTC or its direct or indirect participants
on their respective obligations under the rules and procedures governing their
operations.

Certificated Securities

     Interests in the Global Securities will be exchanged for certificated
securities if:

     .    DTC or any successor depositary (the "Depositary") notifies us that
          it is unwilling or unable to continue as depositary for the Global
          Securities, or DTC ceases to be a "clearing agency" registered under
          the Securities Exchange Act of 1934, and a successor depositary is not
          appointed by us within 90 days

     .    we determine not to have the notes represented by Global Securities

                                       76


Upon the occurrence of either of the events described in the preceding sentence,
we will cause the appropriate certificated securities to be delivered.

     Neither the Company nor the trustee will be liable for any delay by the
Depositary or its nominee in identifying the beneficial owners of the related
notes. Each such person may conclusively rely on, and will be protected in
relying on, instructions from such Depositary or nominee for all purposes,
including the registration and delivery, and the respective principal amounts,
of the notes to be issued.

                    Certain Federal Income Tax Consequences

     The following discussion is based on the current provisions of the Internal
Revenue Code of 1986, as amended (the "Code"), applicable Treasury regulations,
judicial authority and administrative rulings and practice. There can be no
assurance that the Internal Revenue Service (the "Service") will not take a
contrary view, and no ruling from the Service has been or will be sought.
Legislative, judicial or administrative changes or interpretations may be
forthcoming that could alter or modify the statements and conditions set forth
herein. Any such changes or interpretations may or may not be retroactive and
could affect the tax consequences to holders. Certain holders (including
insurance companies, tax-exempt organizations, financial institutions,
broker-dealers, foreign corporations and persons who are not citizens or
residents of the United States) may be subject to special rules not discussed
below. We recommend that each holder consult such holder's own tax advisor as to
the particular tax consequences of exchanging such holder's outstanding notes
for new notes, including the applicability and effect of any state, local or
foreign tax laws.

     We believe that the exchange of outstanding notes for new notes pursuant to
the exchange offer will not be treated as an "exchange" for federal income tax
purposes because the new notes will not be considered to differ materially in
kind or extent from the outstanding notes. Rather, the new notes received by a
holder will be treated as a continuation of the outstanding notes in the hands
of such holder. As a result, there will be no federal income tax consequences to
holders exchanging outstanding notes for new notes pursuant to the exchange
offer.

                             Plan of Distribution

     Based on interpretations by the staff of the SEC in no action letters
issued to third parties, we believe that any holder may transfer new notes
issued under the exchange offer in exchange for the outstanding notes if:

     .    the holder acquires the new notes in the ordinary course of its
          business

     .    the holder is not engaged in, and does not intend to engage in, and
          has no arrangement or understanding with any person to participate in,
          a distribution of such new notes

     Broker-dealers receiving new notes in the exchange offer will be subject to
a prospectus delivery requirement with respect to resales of the new notes.

     We believe that a holder may not transfer new notes issued under the
exchange offer in exchange for the outstanding notes if that holder is:

     .    an "affiliate" of the Company within the meaning of Rule 405 under the
          Securities Act

     .    a broker-dealer that acquired outstanding notes directly from the
          Company

     .    a broker-dealer that acquired outstanding notes as a result of market-
          making or other trading activities without compliance with the
          registration and prospectus delivery provisions of the Securities Act

     To date, the staff of the SEC has taken the position that participating
broker-dealers may fulfill their prospectus delivery requirements with respect
to transactions involving an exchange of securities such as this exchange offer,
other than a resale of an unsold allotment from the original sale of the
outstanding notes, with the prospectus contained in the exchange offer
registration statement. In the registration rights agreement, we have agreed to
permit participating broker-dealers to use this prospectus in connection with
the resale of new notes. We have agreed that, for a period of up to 180 days
after the expiration of the exchange offer, we will make this prospectus, and
any
                                       77


amendment or supplement to this prospectus, available to any broker-dealer that
requests such documents in the letter of transmittal.

     If a holder wishes to exchange its outstanding notes for new notes in the
exchange offer, the holder will be required to make representations to us as
described in "The Exchange Offer -- Purpose and Effect of the Exchange Offer"
and "-- Procedures for Tendering -- Representations to the Company" of this
prospectus and in the letter of transmittal. In addition, if a broker-dealer
receives new notes for its own account in exchange for outstanding notes that
were acquired by it as a result of market-making activities or other trading
activities, it will be required to acknowledge that it will deliver a prospectus
in connection with any resale by it of such new notes.

     We will not receive any proceeds from any sale of new notes by
broker-dealers. Broker-dealers who receive new notes for their own account in
the exchange offer may sell them from time to time in one or more transactions
in the over-the-counter market:

     .    in negotiated transactions

     .    through the writing of options on the new notes or a combination of
          such methods of resale

     .    at market prices prevailing at the time of resale

     .    at prices related to such prevailing market prices or negotiated
          prices

Any resale may be made directly to purchasers or to or through brokers or
dealers who may receive compensation in the form of commissions or concessions
from any broker-dealer or the purchasers of any new notes. Any broker-dealer
that resells new notes it received for its own account in the exchange offer and
any broker or dealer that participates in a distribution of such new notes may
be deemed to be an "underwriter" within the meaning of the Securities Act. Any
profit on any resale of new notes and any commissions or concessions received by
any such persons may be deemed to be underwriting compensation under the
Securities Act. The letter of transmittal states that by acknowledging that it
will deliver and by delivering a prospectus, a broker-dealer will not be deemed
to admit that it is an "underwriter" within the meaning of the Securities Act.

     We have agreed to pay all expenses incidental to the exchange offer other
than commissions and concessions of any brokers or dealers. We will indemnify
holders of the outstanding notes, including any broker-dealers, against certain
liabilities, including liabilities under the Securities Act, as provided in the
registration rights agreement.

                  Transfer Restrictions on Outstanding Notes

     The outstanding notes were not registered under the Securities Act. Those
outstanding notes may not be offered or sold in the United States or to, or for
the account or benefit of, U.S. persons except in accordance with an exemption
from the Securities Act registration requirements. Accordingly, the outstanding
notes were offered and sold only in the United States to "qualified
institutional buyers" under Rule 144A under the Securities Act in a private sale
exempt from the registration requirements of the Securities Act.

                                  Legal Matters

     Certain matters in connection with the offering will be passed upon for the
Company by Gerald A. Morton, Vice President-Law and Corporate Secretary of the
Company. Mr. Morton owns approximately 4,896 shares of the Company's Common
Stock directly and through the Company's tax advantaged savings plan and options
to purchase an aggregate of 53,000 shares of the Company's common stock, which
are or become exercisable in periodic installments through August 1, 2003.

                                    Experts

     The audited consolidated financial statements for each of Pogo Producing
Company and North Central Oil Corporation, incorporated by reference in this
Registration Statement to the extent and for the periods referred to in their
reports, have been audited by Arthur Andersen LLP, independent public
accountants, as indicated in their reports with respect thereto, and are
included herein in reliance upon the authority of said firm as experts in
accounting and auditing in giving said reports.

                                       78


                         Independent Petroleum Engineers

     The estimates of Pogo Producing Company's oil and gas reserves set forth in
the Annual Report, and the related estimates set forth therein of discounted
present values of estimated future net revenues therefrom, are extracted from
the report of Ryder Scott Company, L.P. and incorporated by reference herein.
The estimates of North Central Oil Corporation's oil and gas reserves, and the
related estimates of discounted present values of estimated future net reserves
therefrom, are extracted from the report of Miller & Lents, Ltd. prepared for
North Central Oil Corporation and are incorporated by reference herein to the
information contained in our current report on Form 8-K filed on March 26, 2001.

                                       79


--------------------------------------------------------------------------------

     You should rely only on the information contained or incorporated by
reference in this prospectus. We have not authorized anyone to provide you with
different information.

     We are not offering the exchange notes in any jurisdiction where the offer
is not permitted.

     We do not claim the accuracy of the information in this prospectus as of
any date other than the date stated on the cover.

                                 $200,000,000

                            POGO PRODUCING COMPANY

                               Offer to Exchange

              8 1/4% Series B Senior Subordinated Notes due 2011

                                      for

              8 1/4% Series A Senior Subordinated Notes due 2011


                                  ----------
                                  PROSPECTUS
                                  ----------












                                  May 2, 2001

--------------------------------------------------------------------------------