ENCORE ACQUISITION CO
S-1/A, EX-1, 2000-12-15
CRUDE PETROLEUM & NATURAL GAS
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<PAGE>   1
Draft of December 12, 2000


                                                                      EXHIBIT 1





                                    FORM OF
                           ENCORE ACQUISITION COMPANY

                                  COMMON STOCK

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

                             UNDERWRITING AGREEMENT

                                                                      , 2000

Goldman, Sachs & Co.,
Credit Suisse First Boston Corporation,
Dain Rauscher Incorporated, and
Petrie Parkman & Co., Inc.

   As representatives of the several Underwriters
     named in Schedule I hereto,

c/o Goldman, Sachs & Co.
1000 Louisiana Street
Suite 550
Houston, Texas 77002

Ladies and Gentlemen:

         Encore Acquisition Company, a Delaware corporation (the "Company"),
proposes, subject to the terms and conditions stated herein, to issue and sell
to the Underwriters named in Schedule I hereto (the "Underwriters") an aggregate
of __________ shares (the "Firm Shares") and, at the election of the
Underwriters, up to __________ additional shares (the "Optional Shares") of
Common Stock ("Stock") of the Company (the Firm Shares and the Optional Shares
that the Underwriters elect to purchase pursuant to Section 2 hereof being
collectively called the "Shares").

         1. The Company represents and warrants to, and agrees with, each of the
Underwriters that:

                  (a) A registration statement on Form S-1 (File No. 333-47540)
         (the "Initial Registration Statement") in respect of the Shares has
         been filed with the Securities and Exchange Commission (the
         "Commission"); the Initial Registration Statement and any
         post-effective amendment thereto, each in the form heretofore delivered
         to you, and, excluding exhibits, to you for each of the other
         Underwriters, have been declared effective by the Commission in such
         form; other than a registration statement, if any, increasing the size
         of the offering (a "Rule 462(b) Registration Statement"), filed
         pursuant to Rule 462(b) under the Securities Act of 1933, as amended
         (the "Act"), which became effective upon filing, no other document with
         respect to the Initial Registration Statement has heretofore been filed
         with the


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Draft of December 12, 2000


         Commission; and no stop order suspending the effectiveness of the
         Initial Registration Statement, any post-effective amendment thereto or
         the Rule 462(b) Registration Statement, if any, has been issued and no
         proceeding for that purpose has been initiated or threatened by the
         Commission (any preliminary prospectus included in the Initial
         Registration Statement or filed with the Commission pursuant to Rule
         424(a) of the rules and regulations of the Commission under the Act is
         hereinafter called a "Preliminary Prospectus"; the various parts of the
         Initial Registration Statement and the Rule 462(b) Registration
         Statement, if any, including all exhibits thereto and including the
         information contained in the form of final prospectus filed with the
         Commission pursuant to Rule 424(b) under the Act in accordance with
         Section 6(a) hereof and deemed by virtue of Rule 430A under the Act to
         be part of the Initial Registration Statement at the time it was
         declared effective, each as amended at the time such part of the
         Initial Registration Statement became effective or such part of the
         Rule 462(b) Registration Statement, if any, became or hereafter becomes
         effective, are hereinafter collectively called the "Registration
         Statement"; and such final prospectus, in the form first filed pursuant
         to Rule 424(b) under the Act, is hereinafter called the "Prospectus";

                  (b) No order preventing or suspending the use of any
         Preliminary Prospectus has been issued by the Commission, and each
         Preliminary Prospectus, at the time of filing thereof, conformed in all
         material respects to the requirements of the Act and the rules and
         regulations of the Commission thereunder, and did not contain an untrue
         statement of a material fact or omit to state a material fact required
         to be stated therein or necessary to make the statements therein, in
         the light of the circumstances under which they were made, not
         misleading; provided, however, that this representation and warranty
         shall not apply to any statements or omissions made in reliance upon
         and in conformity with information furnished in writing to the Company
         by an Underwriter through Goldman, Sachs & Co. expressly for use
         therein;

                  (c) The Registration Statement conforms, and the Prospectus
         and any further amendments or supplements to the Registration Statement
         or the Prospectus will conform, in all material respects to the
         requirements of the Act and the rules and regulations of the Commission
         thereunder and do not and will not, as of the applicable effective date
         as to the Registration Statement and any amendment thereto, and as of
         the applicable filing date as to the Prospectus and any amendment or
         supplement thereto, contain an untrue statement of a material fact or
         omit to state a material fact required to be stated therein or
         necessary to make the statements therein not misleading; provided,
         however, that this representation and warranty shall not apply to any
         statements or omissions made in reliance upon and in conformity with
         information furnished in writing to the Company by an Underwriter
         through Goldman, Sachs & Co. expressly for use therein;

                  (d) Neither the Company nor any of its subsidiaries has
         sustained since the date of the latest audited financial statements
         included in the Prospectus any material loss or interference with its
         business from fire, explosion, flood or other calamity, whether or not
         covered by insurance, or from any labor dispute or court or
         governmental action, order or decree, otherwise than as set forth or
         contemplated in the Prospectus; and, since the respective dates as of
         which


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Draft of December 12, 2000


         information is given in the Registration Statement and the Prospectus,
         there has not been any change in the capital stock or long-term debt of
         the Company or any of its subsidiaries or any material adverse change,
         or any development involving a prospective material adverse change, in
         or affecting the general affairs, management, financial position,
         stockholders' equity or results of operations of the Company and its
         subsidiaries, otherwise than as set forth or contemplated in the
         Prospectus;

                  (e) The information used or provided by the Company as the
         basis on which the reserve estimates and related information included
         in the Registration Statement and the Prospectus was prepared by the
         Company, Miller & Lentz, Ltd., independent natural gas and oil
         engineers, or any other person, is true and correct in all material
         respects.

                  (f) Except as described in the Prospectus, the Company and its
         subsidiaries have (i) good and indefeasible title to all their
         interests in natural gas and oil properties, and the care taken by the
         Company and its subsidiaries with respect to acquiring such properties
         was consistent with standard industry practices in the areas where the
         Company operates for acquiring leases and interest therein to develop,
         exploit and produce hydrocarbons, and (ii) good and marketable title in
         fee simple to all other real property and good and marketable title to
         all personal property owned by them, in each case free and clear of all
         liens, encumbrances and defects except such as are described in the
         Prospectus or such as do not materially affect the value of such
         property and do not interfere with the use made and proposed to be made
         of such property by the Company and its subsidiaries; and any real
         property and buildings held under lease by the Company and its
         subsidiaries are held by them under valid, subsisting and enforceable
         leases with such exceptions as are not material and do not interfere
         with the use made and proposed to be made of such property and
         buildings by the Company and its subsidiaries;

                  (g) The Company has been duly incorporated and is validly
         existing as a corporation in good standing under the laws of the State
         of Delaware, with power and authority (corporate and other) to own its
         properties and conduct its business as described in the Prospectus, and
         has been duly qualified as a foreign corporation for the transaction of
         business and is in good standing under the laws of each other
         jurisdiction in which it owns or leases properties or conducts any
         business so as to require such qualification, or is subject to no
         material liability or disability by reason of the failure to be so
         qualified in any such jurisdiction; and each subsidiary of the Company
         has been duly organized or formed and is validly existing in good
         standing under the laws of its jurisdiction of formation;

                  (h) The Company has an authorized capitalization as set forth
         in the Prospectus, and all of the issued shares of capital stock of the
         Company have been duly and validly authorized and issued, are fully
         paid and non-assessable and conform to the description of the Stock
         contained in the Prospectus; and all of the issued shares of capital
         stock or limited partnership interests of each subsidiary of the
         Company have been duly and validly authorized and issued,


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Draft of December 12, 2000


         are fully paid and non-assessable and (except for directors' qualifying
         shares) are owned directly or indirectly by the Company, free and clear
         of all liens, encumbrances, equities or claims;

                  (i) The unissued Shares to be issued and sold by the Company
         to the Underwriters hereunder have been duly and validly authorized
         and, when issued and delivered against payment therefor as provided
         herein, will be duly and validly issued and fully paid and
         non-assessable and will conform to the description of the Stock
         contained in the Prospectus;

                  (j) The issue and sale of the Shares by the Company and the
         compliance by the Company with all of the provisions of this Agreement
         and the consummation of the transactions herein contemplated will not
         conflict with or result in a breach or violation of any of the terms or
         provisions of, or constitute a default under, any indenture, mortgage,
         deed of trust, loan agreement or other agreement or instrument to which
         the Company or any of its subsidiaries is a party or by which the
         Company or any of its subsidiaries is bound or to which any of the
         property or assets of the Company or any of its subsidiaries is
         subject, nor will such action result in any violation of the provisions
         of the Certificate of Incorporation or By-laws of the Company or any
         statute or any order, rule or regulation of any court or governmental
         agency or body having jurisdiction over the Company or any of its
         subsidiaries or any of their properties; and no consent, approval,
         authorization, order, registration or qualification of or with any such
         court or governmental agency or body is required for the issue and sale
         of the Shares or the consummation by the Company of the transactions
         contemplated by this Agreement, except the registration under the Act
         of the Shares and such consents, approvals, authorizations,
         registrations or qualifications as may be required under state
         securities or Blue Sky laws in connection with the purchase and
         distribution of the Shares by the Underwriters;

                  (k) Neither the Company nor any of its subsidiaries is in
         violation of its Certificate of Incorporation or By-laws or in default
         in the performance or observance of any material obligation, agreement,
         covenant or condition contained in any indenture, mortgage, deed of
         trust, loan agreement, lease or other agreement or instrument to which
         it is a party or by which it or any of its properties may be bound;

                  (l) The statements set forth in the Prospectus under the
         caption "Description of Capital Stock", insofar as they purport to
         constitute a summary of the terms of the Stock and the statements under
         the caption "Underwriting", insofar as they purport to describe the
         provisions of the laws and documents referred to therein, fairly and
         accurately summarize and describe such matters in all material
         respects;

                  (m) Other than as set forth in the Prospectus, there are no
         legal or governmental proceedings pending to which the Company or any
         of its subsidiaries is a party or of which any property of the Company
         or any of its subsidiaries is the subject which, if determined
         adversely to the Company or any of its subsidiaries, would individually
         or in the aggregate have a material adverse effect on the current or
         future consolidated financial position, stockholders' equity or results
         of operations of the Company and its subsidiaries; and, to the best of
         the Company's



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Draft of December 12, 2000



         knowledge, no such proceedings are threatened or contemplated by
         governmental authorities or threatened by others;

                  (n) Neither the Company nor any of its subsidiaries is in
         violation of any law, ordinance, governmental rule or regulation or
         court decree to which it may be subject which violation could
         reasonably be expected to, individually or in the aggregate with all
         such violations, have a material adverse effect on the current or
         future consolidated financial position, stockholders' equity or results
         of operations of the Company and its subsidiaries.

                  (o) Each of the Company and its subsidiaries owns or
         possesses, and is operating in compliance with, all approvals,
         licenses, permits, certificates, franchises, easements, consents,
         orders and other governmental authorizations and rights necessary to
         own or lease its properties and conduct its business (collectively,
         "Approvals"), except such Approvals as to which the failure to own,
         possess or operate in compliance with would not, individually or in the
         aggregate, result in a material adverse effect on the current or future
         consolidated financial position, stockholders' equity or results of
         operations of the Company and its subsidiaries ("Material Approvals");
         all such Material Approvals are valid and in full force and effect; and
         the Company has no reason to believe that any governmental agency or
         body is considering limiting, suspending or revoking any such Material
         Approval.

                  (p) From the date as of which information is given in the
         Prospectus through the date hereof, and except as may otherwise be
         disclosed in the Prospectus, neither the Company nor any of its
         subsidiaries has (i) issued, granted, repurchased, reclassified or
         exchanged any of their respective securities (other than in respect of
         intercompany transactions or pursuant to employee stock options, or the
         Company's incentive stock plan), (ii) entered into any material
         transaction not in the ordinary course of business or (iii) entered
         into any material transaction with an affiliate of the Company, other
         than a subsidiary; and the Company has not declared or paid any
         dividend on its capital stock.

                  (q) There has been no storage, disposal, generation,
         transportation, handling or treatment of hazardous substances or
         hazardous wastes by the Company or any of its subsidiaries (or to the
         knowledge of the Company, any of its predecessors in interest) at, upon
         or from any of the property now or previously owned or leased by the
         Company or any of its subsidiaries in violation of any applicable law,
         ordinance, rule, regulation, order, judgment, decree or permit or which
         would require remedial action under any applicable law, ordinance,
         rule, regulation, order, judgment, decree or permit, except for any
         violation or remedial action which would not, individually or in the
         aggregate with all such violations and remedial actions, result in a
         material adverse effect on the current or future consolidated financial
         position, stockholders' equity or results of operations of the Company
         and its subsidiaries; there has been no material spill, discharge,
         leak, emission, injection, escape, dumping or release of any kind onto
         such property or into the environment surrounding such property of any
         hazardous wastes or hazardous substances due to or caused by the
         Company or any of its subsidiaries, except for any such spill,
         discharge, leak, emission, injection, escape, dumping or release which
         would not,



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Draft of December 12, 2000



         individually or in the aggregate with all such spills, discharges,
         leaks, emissions, injections, escapes, dumpings and releases result in
         a material adverse effect on the current or future consolidated
         financial position, stockholders' equity or results of operations of
         the Company and its subsidiaries; none of the facilities of the Company
         or any of its subsidiaries is a solid waste facility for purposes of
         any applicable environmental law; and the terms "hazardous substances"
         and "hazardous wastes" shall have the meanings specified in any
         applicable local, state and federal laws or regulations with respect to
         environmental protection.

                  (r) The Company is not and, after giving effect to the
         offering and sale of the Shares, will not be an "investment company",
         as such term is defined in the Investment Company Act of 1940, as
         amended (the "Investment Company Act");

                  (s) Neither the Company nor any of its affiliates does
         business with the government of Cuba or with any person or affiliate
         located in Cuba within the meaning of Section 517.075, Florida
         Statutes;

                  (t) Arthur Andersen LLP, who have certified certain financial
         statements of the Company and its subsidiaries, are independent public
         accountants as required by the Act and the rules and regulations of the
         Commission thereunder.

         2. Subject to the terms and conditions herein set forth, (a) the
Company agrees to issue and sell to each of the Underwriters, and each of the
Underwriters agrees, severally and not jointly, to purchase from the Company, at
a purchase price per share of $__________, the number of Firm Shares set forth
opposite the name of such Underwriter in Schedule I hereto and (b) in the event
and to the extent that the Underwriters shall exercise the election to purchase
Optional Shares as provided below, the Company agrees to issue and sell to each
of the Underwriters, and each of the Underwriters agrees, severally and not
jointly, to purchase from the Company, at the purchase price per share set forth
in clause (a) of this Section 2, that portion of the number of Optional Shares
as to which such election shall have been exercised (to be adjusted by you so as
to eliminate fractional shares) determined by multiplying such number of
Optional Shares by a fraction, the numerator of which is the maximum number of
Optional Shares which such Underwriter is entitled to purchase as set forth
opposite the name of such Underwriter in Schedule I hereto and the denominator
of which is the maximum number of Optional Shares that all of the Underwriters
are entitled to purchase hereunder.

                  The Company hereby grants to the Underwriters the right to
purchase at their election up to __________ Optional Shares, at the purchase
price per share set forth in the paragraph above, for the sole purpose of
covering sales of shares in excess of the number of Firm Shares. Any such
election to purchase Optional Shares may be exercised only by written notice
from you to the Company, given within a period of 30 calendar days after the
date of this Agreement, setting forth the aggregate number of Optional Shares to
be purchased and the date on which such Optional Shares are to be delivered, as
determined by you but in no event earlier than the First Time of Delivery (as
defined in Section 4 hereof) or, unless you and the Company otherwise agree in
writing, earlier than two or later than ten business days after the date of such
notice.



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Draft of December 12, 2000


         3. Upon the authorization by you of the release of the Firm Shares, the
several Underwriters propose to offer the Firm Shares for sale upon the terms
and conditions set forth in the Prospectus.


         4.       (a) The Shares to be purchased by each Underwriter hereunder,
         in definitive form, and in such authorized denominations and registered
         in such names as Goldman, Sachs & Co. may request upon at least
         forty-eight hours' prior notice to the Company shall be delivered by or
         on behalf of the Company to Goldman, Sachs & Co., for the account of
         such Underwriter, against payment by or on behalf of such Underwriter
         of the purchase price therefor by wire transfer of Federal (same-day)
         funds to the account specified by the Company to Goldman, Sachs & Co.
         at least forty-eight hours in advance. The Company will cause the
         certificates representing the Shares to be made available for checking
         and packaging at least twenty-four hours prior to the Time of Delivery
         (as defined below) with respect thereto at the office of Goldman, Sachs
         & Co., 85 Broad Street, New York, New York 10004 (the "Designated
         Office"). The time and date of such delivery and payment shall be, with
         respect to the Firm Shares, 9:30 a.m., New York City time, on
         __________, 2000 or such other time and date as Goldman, Sachs & Co.
         and the Company may agree upon in writing, and, with respect to the
         Optional Shares, 9:30 a.m., New York time, on the date specified by
         Goldman, Sachs & Co. in the written notice given by Goldman, Sachs &
         Co. of the Underwriters' election to purchase such Optional Shares, or
         such other time and date as Goldman, Sachs & Co. and the Company may
         agree upon in writing. Such time and date for delivery of the Firm
         Shares is herein called the "First Time of Delivery", such time and
         date for delivery of the Optional Shares, if not the First Time of
         Delivery, is herein called the "Second Time of Delivery", and each such
         time and date for delivery is herein called a "Time of Delivery".


                  (b) The documents to be delivered at each Time of Delivery by
         or on behalf of the parties hereto pursuant to Section 7 hereof,
         including the cross receipt for the Shares and any additional documents
         requested by the Underwriters pursuant to Section 8(l) hereof, will be
         delivered at the offices of [BAKER BOTTS L.L.P., ONE SHELL PLAZA, 910
         LOUISIANA STREET, HOUSTON, TEXAS 77002] (the "Closing Location"), and
         the Shares will be delivered at the Designated Office, all at such Time
         of Delivery. A meeting will be held at the Closing Location at ______
         p.m., New York City time, on the New York Business Day next preceding
         such Time of Delivery, at which meeting the final drafts of the
         documents to be delivered pursuant to the preceding sentence will be
         available for review by the parties hereto. For the purposes of this
         Section 5, "New York Business Day" shall mean each Monday, Tuesday,
         Wednesday, Thursday and Friday which is not a day on which banking
         institutions in New York are generally authorized or obligated by law
         or executive order to close.

         5. The Company agrees with each of the Underwriters:

                  (a) To prepare the Prospectus in a form approved by you and to
         file such Prospectus pursuant to Rule 424(b) under the Act not later
         than the Commission's close of business on the second business day
         following the execution and delivery of this Agreement, or, if
         applicable,

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Draft of December 12, 2000


         such earlier time as may be required by Rule 430A(a)(3) under the Act;
         to make no further amendment or any supplement to the Registration
         Statement or Prospectus which shall be disapproved by you promptly
         after reasonable notice thereof; to advise you, promptly after it
         receives notice thereof, of the time when any amendment to the
         Registration Statement has been filed or becomes effective or any
         supplement to the Prospectus or any amended Prospectus has been filed
         and to furnish you with copies thereof; to advise you, promptly after
         it receives notice thereof, of the issuance by the Commission of any
         stop order or of any order preventing or suspending the use of any
         Preliminary Prospectus or Prospectus, of the suspension of the
         qualification of the Shares for offering or sale in any jurisdiction,
         of the initiation or threatening of any proceeding for any such
         purpose, or of any request by the Commission for the amending or
         supplementing of the Registration Statement or Prospectus or for
         additional information; and, in the event of the issuance of any stop
         order or of any order preventing or suspending the use of any
         Preliminary Prospectus or Prospectus or suspending any such
         qualification, promptly to use its best efforts to obtain the
         withdrawal of such order;

                  (b) Promptly from time to time to take such action as you may
         reasonably request to qualify the Shares for offering and sale under
         the securities laws of such jurisdictions as you may request and to
         comply with such laws so as to permit the continuance of sales and
         dealings therein in such jurisdictions for as long as may be necessary
         to complete the distribution of the Shares, provided that in connection
         therewith the Company shall not be required to qualify as a foreign
         corporation, to become subject to general taxation or to file a general
         consent to service of process in any jurisdiction;

                  (c) Prior to 10:00 a.m., New York City time, on the New York
         Business Day next succeeding the date of this Agreement and from time
         to time, to furnish the Underwriters with written and electronic copies
         of the Prospectus in New York City in such quantities as you may
         reasonably request, and, if the delivery of a prospectus is required at
         any time prior to the expiration of nine months after the time of issue
         of the Prospectus in connection with the offering or sale of the Shares
         and if at such time any event shall have occurred as a result of which
         the Prospectus as then amended or supplemented would include an untrue
         statement of a material fact or omit to state any material fact
         necessary in order to make the statements therein, in the light of the
         circumstances under which they were made when such Prospectus is
         delivered, not misleading, or, if for any other reason it shall be
         necessary during such period to amend or supplement the Prospectus in
         order to comply with the Act, to notify you and upon your request to
         prepare and furnish without charge to each Underwriter and to any
         dealer in securities as many written and electronic copies as you may
         from time to time reasonably request of an amended Prospectus or a
         supplement to the Prospectus which will correct such statement or
         omission or effect such compliance, and in case any Underwriter is
         required to deliver a prospectus in connection with sales of any of the
         Shares at any time nine months or more after the time of issue of the
         Prospectus, upon your request but at the expense of such Underwriter,
         to prepare and deliver to such Underwriter as many written and
         electronic copies as you may request of an amended or supplemented
         Prospectus complying with Section 10(a)(3) of the Act;


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Draft of December 12, 2000


                  (d) To make generally available to its securityholders as soon
         as practicable, but in any event not later than eighteen months after
         the effective date of the Registration Statement (as defined in Rule
         158(c) under the Act), an earnings statement of the Company and its
         subsidiaries (which need not be audited) complying with Section 11(a)
         of the Act and the rules and regulations thereunder (including, at the
         option of the Company, Rule 158);

                  (e) During the period beginning from the date hereof and
         continuing to and including the date 180 days after the date of the
         Prospectus, not to offer, sell, contract to sell or otherwise dispose
         of, except as provided hereunder any securities of the Company that are
         substantially similar to the Shares, including but not limited to any
         securities that are convertible into or exchangeable for, or that
         represent the right to receive, Stock or any such substantially similar
         securities (other than pursuant to employee stock option or incentive
         stock plans existing on, or upon the conversion or exchange of
         convertible or exchangeable securities outstanding as of, the date of
         this Agreement), without the prior written consent of Goldman Sachs &
         Co.

                  (f) To furnish to its stockholders as soon as practicable
         after the end of each fiscal year an annual report (including a balance
         sheet and statements of income, stockholders' equity and cash flows of
         the Company and its consolidated subsidiaries certified by independent
         public accountants) and, as soon as practicable after the end of each
         of the first three quarters of each fiscal year (beginning with the
         fiscal quarter ending after the effective date of the Registration
         Statement), to make available to its stockholders consolidated summary
         financial information of the Company and its subsidiaries for such
         quarter in reasonable detail;

                  (g) During a period of five years from the effective date of
         the Registration Statement, to furnish to you copies of all reports or
         other communications (financial or other) furnished to stockholders,
         and to deliver to you (i) as soon as they are available, copies of any
         reports and financial statements furnished to or filed with the
         Commission or any national securities exchange on which any class of
         securities of the Company is listed; and (ii) such additional
         information concerning the business and financial condition of the
         Company as you may from time to time reasonably request (such financial
         statements to be on a consolidated basis to the extent the accounts of
         the Company and its subsidiaries are consolidated in reports furnished
         to its stockholders generally or to the Commission);

                  (h) To use the net proceeds received by it from the sale of
         the Shares pursuant to this Agreement in the manner specified in the
         Prospectus under the caption "Use of Proceeds";

                  (i) To use its best efforts to list, subject to notice of
         issuance, the Shares on the New York Stock Exchange (the "Exchange");

                  (j) To file with the Commission such information on Form 10-Q
         or Form 10-K as may be required by Rule 463 under the Act;

                  (k) If the Company elects to rely upon Rule 462(b), the
         Company shall file a Rule 462(b) Registration Statement with the
         Commission in compliance with Rule 462(b) by 10:00

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Draft of December 12, 2000


         p.m., Washington, D.C. time, on the date of this Agreement, and the
         Company shall at the time of filing either pay to the Commission the
         filing fee for the Rule 462(b) Registration Statement or give
         irrevocable instructions for the payment of such fee pursuant to Rule
         111(b) under the Act; and

                  (l) Upon request of any Underwriter, to furnish, or cause to
         be furnished, to such Underwriter an electronic version of the
         Company's trademarks, servicemarks and corporate logo for use on the
         website, if any, operated by such Underwriter for the purpose of
         facilitating the on-line offering of the Shares (the "License");
         provided, however, that the License shall be used solely for the
         purpose described above, is granted without any fee and may not be
         assigned or transferred.

         6. The Company covenants and agrees with the several Underwriters that
the Company will pay or cause to be paid the following: (i) the fees,
disbursements and expenses of the Company's counsel and accountants in
connection with the registration of the Shares under the Act and all other
expenses in connection with the preparation, printing and filing of the
Registration Statement, any Preliminary Prospectus and the Prospectus and
amendments and supplements thereto and the mailing and delivering of copies
thereof to the Underwriters and dealers; (ii) the cost of printing or producing
any Agreement among Underwriters, this Agreement, the Blue Sky Memorandum,
closing documents (including any compilations thereof) and any other documents
in connection with the offering, purchase, sale and delivery of the Shares;
(iii) all expenses in connection with the qualification of the Shares for
offering and sale under state securities laws as provided in Section 6(b)
hereof, including the fees and disbursements of counsel for the Underwriters in
connection with such qualification and in connection with the Blue Sky survey;
(iv) all fees and expenses in connection with listing the Shares on the New York
Stock Exchange; (v) the filing fees incident to, and the fees and disbursements
of counsel for the Underwriters in connection with, securing any required review
by the National Association of Securities Dealers, Inc. of the terms of the sale
of the Shares; (vi) the cost of preparing stock certificates; (vii) the cost and
charges of any transfer agent or registrar; and (viii) all other costs and
expenses incident to the performance of its obligations hereunder which are not
otherwise specifically provided for in this Section. It is understood, however,
that, except as provided in this Section, and Sections 8 and 11 hereof, the
Underwriters will pay all of their own costs and expenses, including the fees of
their counsel, stock transfer taxes on resale of any of the Shares by them, and
any advertising expenses connected with any offers they may make.

         7. The obligations of the Underwriters hereunder, as to the Shares to
be delivered at each Time of Delivery, shall be subject, in their discretion, to
the condition that all representations and warranties and other statements of
the Company herein are, at and as of such Time of Delivery, true and correct,
the condition that the Company shall have performed all of its obligations
hereunder theretofore to be performed, and the following additional conditions:

                  (a) The Prospectus shall have been filed with the Commission
         pursuant to Rule 424(b) within the applicable time period prescribed
         for such filing by the rules and regulations under the Act and in
         accordance with Section 6(a) hereof; if the Company has elected to rely


                                       10
<PAGE>   11

Draft of December 12, 2000


         upon Rule 462(b), the Rule 462(b) Registration Statement shall have
         become effective by 10:00 p.m., Washington, D.C. time, on the date of
         this Agreement; no stop order suspending the effectiveness of the
         Registration Statement or any part thereof shall have been issued and
         no proceeding for that purpose shall have been initiated or threatened
         by the Commission; and all requests for additional information on the
         part of the Commission shall have been complied with to your reasonable
         satisfaction;

                  (b) Baker Botts L.L.P., counsel for the Underwriters, shall
         have furnished to you such written opinion or opinions dated such Time
         of Delivery, with respect to the matters covered in paragraphs (i),
         (ii), (vii), (xi), (xiii) and the final unnumbered paragraph of
         subsection (c) below as well as such other related matters as you may
         reasonably request, and such counsel shall have received such papers
         and information as they may reasonably request to enable them to pass
         upon such matters;

                  (c) Kelly, Hart & Hallman P.C., counsel for the Company, shall
         have furnished to you their written opinion dated such Time of
         Delivery, in form and substance satisfactory to you, to the effect
         that:

                           (i) The Company has been duly incorporated, validly
                  exists and is in good standing under the laws of the State of
                  Delaware, with corporate power and authority to own its
                  properties and conduct its business as described in the
                  Prospectus;

                           (ii) The Company has an authorized capitalization as
                  set forth in the Prospectus, and all of the issued shares of
                  capital stock of the Company (including the Shares being
                  delivered at such Time of Delivery) have been duly and validly
                  authorized and issued and are fully paid and non-assessable;
                  and the Shares conform to the description of the Stock
                  contained in the Prospectus;

                           (iii) The Company is qualified as a foreign
                  corporation for the transaction of business and is in good
                  standing under the laws of the State of Texas and such other
                  states as are set forth in such opinion, and such counsel has
                  no knowledge that the nature of the properties of the Company
                  or the conduct of its business requires qualification in other
                  jurisdictions, except jurisdictions in which the Company is
                  subject to no material liability or disability by reason of
                  failure to be so qualified in any such jurisdiction;

                           (iv) Each subsidiary of the Company that is a
                  corporation has been duly incorporated, validly exists and is
                  in good standing under the laws of its jurisdiction of
                  incorporation; and all of the issued shares of capital stock
                  of each such subsidiary have been duly and validly authorized
                  and issued, are fully paid and non-assessable, and are owned
                  of record by the Company, directly or through one or more
                  subsidiaries, and such counsel has no knowledge (except as set
                  forth in the Prospectus) of any adverse claim (within the
                  meaning of Article 8 of the Uniform Commercial Code) thereto;


                                       11
<PAGE>   12

Draft of December 12, 2000


                           (v) Each subsidiary of the Company that is a limited
                  partnership exists as a limited partnership under the laws of
                  the State of Texas; all of the outstanding partnership
                  interests have been duly authorized, are fully paid without
                  the requirement of additional consideration, are validly
                  issued and entitle the holders thereof to the benefits of the
                  respective limited partnership agreements relating thereto and
                  are owned of record by the Company directly or through one or
                  more subsidiaries and such counsel has no knowledge (except as
                  set forth in the Prospectus) of any perfected liens,
                  encumbrances, equities or claims thereto by any other person;

                           (vi) Such counsel has no knowledge, other than as set
                  forth in the Prospectus, of any pending threatened or
                  contemplated legal or governmental proceedings to which the
                  Company or any of its subsidiaries is a party or of which any
                  property of the Company or any of its subsidiaries is the
                  subject which, if determined adversely to the Company or any
                  of its subsidiaries, would individually or in the aggregate
                  have a material adverse effect on the current or future
                  consolidated financial position, stockholders' equity or
                  results of operations of the Company and its subsidiaries;

                           (vii) This Agreement has been duly authorized,
                  executed and delivered by the Company;

                           (viii) The issue and sale of the Shares being
                  delivered at such Time of Delivery by the Company and the
                  compliance by the Company with all of the provisions of this
                  Agreement and the consummation of the transactions herein
                  contemplated will not conflict with or result in a breach or
                  violation of any of the terms or provisions of, or constitute
                  a default under, any indenture, mortgage, deed of trust, loan
                  agreement or other agreement or instrument known to such
                  counsel to which the Company or any of its subsidiaries is a
                  party or by which the Company or any of its subsidiaries is
                  bound or to which any of the property or assets of the Company
                  or any of its subsidiaries is subject, nor will such action
                  result in any violation of the provisions of the Certificate
                  of Incorporation or By-laws of the Company or any statute or
                  any order, rule or regulation known to such counsel of any
                  court or governmental agency or body having jurisdiction over
                  the Company or any of its subsidiaries or any of their
                  properties;

                           (ix) No consent, approval, authorization, order,
                  registration or qualification of or with any such court or
                  governmental agency or body is required for the issue and sale
                  of the Shares or the consummation by the Company of the
                  transactions contemplated by this Agreement, except the
                  registration under the Act of the Shares, and such consents,
                  approvals, authorizations, registrations or qualifications as
                  may be required under state securities or Blue Sky laws in
                  connection with the purchase and distribution of the Shares by
                  the Underwriters;


                                       12
<PAGE>   13

Draft of December 12, 2000


                           (x) Such counsel has no knowledge that the Company or
                  any of its subsidiaries is in violation of its Certificate of
                  Incorporation or By-laws or in default in the performance or
                  observance of any material obligation, agreement, covenant or
                  condition contained in any indenture, mortgage, deed of trust,
                  loan agreement, lease or other agreement or instrument to
                  which it is a party or by which it or any of its properties
                  may be bound;

                           (xi) The statements set forth in the Prospectus under
                  the caption "Description of Capital Stock", insofar as they
                  purport to constitute a summary of the terms of the Stock and
                  under the caption "Underwriting", insofar as they purport to
                  describe the provisions of the laws and documents referred to
                  therein, are correct in all material respects;

                           (xii) The Company is not an "investment company", as
                  such term is defined in the Investment Company Act; and (xiii)
                  The Registration Statement and the Prospectus and any further
                  amendments and supplements thereto made by the Company prior
                  to such Time of Delivery (other than the financial statements,
                  notes thereto and related schedules therein, and the
                  information that is extracted from the reports of Miller and
                  Lents, Ltd. pertaining to oil and natural gas reserves that is
                  included therein, as to which such counsel need express no
                  opinion) comply as to form in all material respects with the
                  requirements of the Act and the rules and regulations
                  thereunder.

                              In addition to the opinions set forth above, such
                  opinion also shall include a statement to the effect that
                  although such counsel does not assume any responsibility for
                  the accuracy, completeness or fairness of the statements
                  contained in the Registration Statement or the Prospectus,
                  except for those referred to in the opinion in subsection (xi)
                  of this Section 8(c), nothing has come to their attention that
                  would cause them to believe that, as of its effective date,
                  the Registration Statement or any further amendment thereto
                  made by the Company prior to such Time of Delivery (other than
                  the financial statements, notes thereto and related schedules
                  therein, and the information that is extracted from the
                  reports of Miller and Lents, Ltd. pertaining to oil and
                  natural gas reserves that is included therein, as to which
                  such counsel need express no opinion) contained an untrue
                  statement of a material fact or omitted to state a material
                  fact required to be stated therein or necessary to make the
                  statements therein not misleading or that, as of its date, the
                  Prospectus or any further amendment or supplement thereto made
                  by the Company prior to such Time of Delivery (other than the
                  financial statements, notes thereto and related schedules
                  therein, and the information that is extracted from the
                  reports of Miller and Lents, Ltd. pertaining to oil and
                  natural gas reserves that is included therein, as to which
                  such counsel need express no opinion) contained an untrue
                  statement of a material fact or omitted to state a material
                  fact necessary to make the statements therein, in the light of
                  the circumstances under which


                                       13
<PAGE>   14

Draft of December 12, 2000


                  they were made, not misleading, or that, as of such Time of
                  Delivery, either the Registration Statement or the Prospectus
                  or any further amendment or supplement thereto made by the
                  Company prior to such Time of Delivery (other than the
                  financial statements, notes thereto and related schedules
                  therein, and the information that is extracted from the
                  reports of Miller and Lents, Ltd. pertaining to oil and
                  natural gas reserves that is included therein, as to which
                  such counsel need express no opinion) contains an untrue
                  statement of a material fact or omits to state a material fact
                  necessary to make the statements therein, in the light of the
                  circumstances under which they were made, not misleading; and
                  they do not know of any amendment to the Registration
                  Statement required to be filed or of any contracts or other
                  documents of a character required to be filed as an exhibit to
                  the Registration Statement or required to be described in the
                  Registration Statement or the Prospectus which are not filed
                  or described as required;

                  (d) On the date of the Prospectus at a time prior to the
         execution of this Agreement, at 9:30 a.m., New York City time, on the
         effective date of any post-effective amendment to the Registration
         Statement filed subsequent to the date of this Agreement and also at
         each Time of Delivery, Arthur Andersen LLP shall have furnished to you
         a letter or letters, dated the respective dates of delivery thereof, in
         form and substance satisfactory to you, to the effect set forth in
         Annex I hereto (the executed copy of the letter delivered prior to the
         execution of this Agreement is attached as Annex I(a) hereto and a
         draft of the form of letter to be delivered on the effective date of
         any post-effective amendment to the Registration Statement and as of
         each Time of Delivery is attached as Annex I(b) hereto);

                  (e) The Company shall have furnished to the Representatives a
         letter of Miller & Lentz, Ltd., addressed to the Representatives and
         dated each Time of Delivery confirming that they are independent
         petroleum engineering firm with respect to the Company, and confirming
         in all material respects their review of the Company's oil and gas
         reserves as described in the Prospectus.

                  (f) (i) Neither the Company nor any of its subsidiaries shall
         have sustained since the date of the latest audited financial
         statements included in the Prospectus any loss or interference with its
         business from fire, explosion, flood or other calamity, whether or not
         covered by insurance, or from any labor dispute or court or
         governmental action, order or decree, otherwise than as set forth or
         contemplated in the Prospectus, and (ii) since the respective dates as
         of which information is given in the Prospectus there shall not have
         been any change in the capital stock or long-term debt of the Company
         or any of its subsidiaries or any change, or any development involving
         a prospective change, in or affecting the general affairs, management,
         financial position, stockholders' equity or results of operations of
         the Company and its subsidiaries, otherwise than as set forth or
         contemplated in the Prospectus, the effect of which, in any such case
         described in clause (i) or (ii), is in the judgment of the
         Representatives so material and adverse as to make it impracticable or
         inadvisable to proceed with the public


                                       14
<PAGE>   15

Draft of December 12, 2000


         offering or the delivery of the Shares being delivered at such Time of
         Delivery on the terms and in the manner contemplated in the Prospectus;

                  (g) The Company shall have filed an Amended and Restated
         Certificate of Incorporation that recapitalizes the Company as
         described in the Prospectus;

                  (h) On or after the date hereof there shall not have occurred
         any of the following: (i) a suspension or material limitation in
         trading in securities generally on the New York Stock Exchange; (ii) a
         suspension or material limitation in trading in the Company's
         securities on the New York Stock Exchange; (iii) a general moratorium
         on commercial banking activities declared by either Federal or New York
         or Texas authorities; or (iv) the outbreak or escalation of hostilities
         involving the United States or the declaration by the United States of
         a national emergency or war, if the effect of any such event specified
         in this clause (iv) in the judgment of the Representatives makes it
         impracticable or inadvisable to proceed with the public offering or the
         delivery of the Shares being delivered at such Time of Delivery on the
         terms and in the manner contemplated in the Prospectus;

                  (i) The Shares to be sold at such Time of Delivery shall have
         been duly listed, subject to notice of issuance, on the Exchange;

                  (j) The Company shall have obtained and delivered to the
         Underwriters executed copies of an agreement from [list appropriate
         stockholders of the Company], substantially to the effect set forth in
         Subsection 6(e) hereof in form and substance satisfactory to you;

                  (k) The Company shall have complied with the provisions of
         Section 6(c) hereof with respect to the furnishing of prospectuses on
         the New York Business Day next succeeding the date of this Agreement;
         and

                  (l) The Company shall have furnished or caused to be furnished
         to you at such Time of Delivery certificates of officers of the Company
         satisfactory to you as to the accuracy of the representations and
         warranties of the Company herein at and as of such Time of Delivery, as
         to the performance by the Company of all of its obligations hereunder
         to be performed at or prior to such Time of Delivery, as to the matters
         set forth in subsections (a) and (e) of this Section and as to such
         other matters as you may reasonably request.

         8.       (a) The Company will indemnify and hold harmless each
         Underwriter against any losses, claims, damages or liabilities, joint
         or several, to which such Underwriter may become subject, under the Act
         or otherwise, insofar as such losses, claims, damages or liabilities
         (or actions in respect thereof) arise out of or are based upon an
         untrue statement or alleged untrue statement of a material fact
         contained in any Preliminary Prospectus, the Registration Statement or
         the Prospectus, or any amendment or supplement thereto, or arise out of
         or are based upon the omission or alleged omission to state therein a
         material fact required to be stated therein or necessary to make the
         statements therein not misleading, and will reimburse each Underwriter
         for any legal or other expenses reasonably incurred by such Underwriter
         in connection with

                                       15
<PAGE>   16

Draft of December 12, 2000



         investigating or defending any such action or claim as such expenses
         are incurred; provided, however, that the Company shall not be liable
         in any such case to the extent that any such loss, claim, damage or
         liability arises out of or is based upon an untrue statement or alleged
         untrue statement or omission or alleged omission made in any
         Preliminary Prospectus, the Registration Statement or the Prospectus or
         any such amendment or supplement in reliance upon and in conformity
         with written information furnished to the Company by any Underwriter
         through Goldman, Sachs & Co. expressly for use therein.

                  (b) Each Underwriter will indemnify and hold harmless the
         Company against any losses, claims, damages or liabilities to which the
         Company may become subject, under the Act or otherwise, insofar as such
         losses, claims, damages or liabilities (or actions in respect thereof)
         arise out of or are based upon an untrue statement or alleged untrue
         statement of a material fact contained in any Preliminary Prospectus,
         the Registration Statement or the Prospectus, or any amendment or
         supplement thereto, or arise out of or are based upon the omission or
         alleged omission to state therein a material fact required to be stated
         therein or necessary to make the statements therein not misleading, in
         each case to the extent, but only to the extent, that such untrue
         statement or alleged untrue statement or omission or alleged omission
         was made in any Preliminary Prospectus, the Registration Statement or
         the Prospectus or any such amendment or supplement in reliance upon and
         in conformity with written information furnished to the Company by such
         Underwriter through Goldman, Sachs & Co. expressly for use therein; and
         will reimburse the Company for any legal or other expenses reasonably
         incurred by the Company in connection with investigating or defending
         any such action or claim as such expenses are incurred.

                  (c) Promptly after receipt by an indemnified party under
         subsection (a) or (b) above of notice of the commencement of any
         action, such indemnified party shall, if a claim in respect thereof is
         to be made against the indemnifying party under such subsection, notify
         the indemnifying party in writing of the commencement thereof; but the
         omission so to notify the indemnifying party shall not relieve it from
         any liability which it may have to any indemnified party otherwise than
         under such subsection. In case any such action shall be brought against
         any indemnified party and it shall notify the indemnifying party of the
         commencement thereof, the indemnifying party shall be entitled to
         participate therein and, to the extent that it shall wish, jointly with
         any other indemnifying party similarly notified, to assume the defense
         thereof, with counsel satisfactory to such indemnified party (who shall
         not, except with the consent of the indemnified party, be counsel to
         the indemnifying party), and, after notice from the indemnifying party
         to such indemnified party of its election so to assume the defense
         thereof, the indemnifying party shall not be liable to such indemnified
         party under such subsection for any legal expenses of other counsel or
         any other expenses, in each case subsequently incurred by such
         indemnified party, in connection with the defense thereof other than
         reasonable costs of investigation. No indemnifying party shall, without
         the written consent of the indemnified party, effect the settlement or
         compromise of, or consent to the entry of any judgment with respect to,
         any pending or threatened action or claim in respect of which
         indemnification or contribution may be sought hereunder (whether or not
         the indemnified party is an actual or potential party to such

                                       16

<PAGE>   17

Draft of December 12, 2000


         action or claim) unless such settlement, compromise or judgment (i)
         includes an unconditional release of the indemnified party from all
         liability arising out of such action or claim and (ii) does not include
         a statement as to or an admission of fault, culpability or a failure to
         act, by or on behalf of any indemnified party.

                  (d) If the indemnification provided for in this Section 8 is
         unavailable to or insufficient to hold harmless an indemnified party
         under subsection (a) or (b) above in respect of any losses, claims,
         damages or liabilities (or actions in respect thereof) referred to
         therein, then each indemnifying party shall contribute to the amount
         paid or payable by such indemnified party as a result of such losses,
         claims, damages or liabilities (or actions in respect thereof) in such
         proportion as is appropriate to reflect the relative benefits received
         by the Company on the one hand and the Underwriters on the other from
         the offering of the Shares. If, however, the allocation provided by the
         immediately preceding sentence is not permitted by applicable law or if
         the indemnified party failed to give the notice required under
         subsection (c) above, then each indemnifying party shall contribute to
         such amount paid or payable by such indemnified party in such
         proportion as is appropriate to reflect not only such relative benefits
         but also the relative fault of the Company on the one hand and the
         Underwriters on the other in connection with the statements or
         omissions which resulted in such losses, claims, damages or liabilities
         (or actions in respect thereof), as well as any other relevant
         equitable considerations. The relative benefits received by the Company
         on the one hand and the Underwriters on the other shall be deemed to be
         in the same proportion as the total net proceeds from the offering
         (before deducting expenses) received by the Company bear to the total
         underwriting discounts and commissions received by the Underwriters, in
         each case as set forth in the table on the cover page of the
         Prospectus. The relative fault shall be determined by reference to,
         among other things, whether the untrue or alleged untrue statement of a
         material fact or the omission or alleged omission to state a material
         fact relates to information supplied by the Company on the one hand or
         the Underwriters on the other and the parties' relative intent,
         knowledge, access to information and opportunity to correct or prevent
         such statement or omission. The Company and the Underwriters agree that
         it would not be just and equitable if contributions pursuant to this
         subsection (d) were determined by pro rata allocation (even if the
         Underwriters were treated as one entity for such purpose) or by any
         other method of allocation which does not take account of the equitable
         considerations referred to above in this subsection (d). The amount
         paid or payable by an indemnified party as a result of the losses,
         claims, damages or liabilities (or actions in respect thereof) referred
         to above in this subsection (d) shall be deemed to include any legal or
         other expenses reasonably incurred by such indemnified party in
         connection with investigating or defending any such action or claim.
         Notwithstanding the provisions of this subsection (d), no Underwriter
         shall be required to contribute any amount in excess of the amount by
         which the total price at which the Shares underwritten by it and
         distributed to the public were offered to the public exceeds the amount
         of any damages which such Underwriter has otherwise been required to
         pay by reason of such untrue or alleged untrue statement or omission or
         alleged omission. No person guilty of fraudulent misrepresentation
         (within the meaning of Section 11(f) of the Act) shall be entitled to
         contribution from any person who was not guilty of such


                                       17
<PAGE>   18

Draft of December 12, 2000


         fraudulent misrepresentation. The Underwriters' obligations in this
         subsection (d) to contribute are several in proportion to their
         respective underwriting obligations and not joint.

                  (e) The obligations of the Company under this Section 8 shall
         be in addition to any liability which the Company may otherwise have
         and shall extend, upon the same terms and conditions, to each person,
         if any, who controls any Underwriter within the meaning of the Act; and
         the obligations of the Underwriters under this Section 8 shall be in
         addition to any liability which the respective Underwriters may
         otherwise have and shall extend, upon the same terms and conditions, to
         each officer and director of the Company (including any person who,
         with his or her consent, is named in the Registration Statement as
         about to become a director of the Company) and to each person, if any,
         who controls the Company within the meaning of the Act.

         9.       (a) If any Underwriter shall default in its obligation to
         purchase the Shares which it has agreed to purchase hereunder at a Time
         of Delivery, you may in your discretion arrange for you or another
         party or other parties to purchase such Shares on the terms contained
         herein. If within thirty-six hours after such default by any
         Underwriter you do not arrange for the purchase of such Shares, then
         the Company shall be entitled to a further period of thirty-six hours
         within which to procure another party or other parties satisfactory to
         you to purchase such Shares on such terms. In the event that, within
         the respective prescribed periods, you notify the Company that you have
         so arranged for the purchase of such Shares, or the Company notifies
         you that it has so arranged for the purchase of such Shares, you or the
         Company shall have the right to postpone such Time of Delivery for a
         period of not more than seven days, in order to effect whatever changes
         may thereby be made necessary in the Registration Statement or the
         Prospectus, or in any other documents or arrangements, and the Company
         agrees to file promptly any amendments to the Registration Statement or
         the Prospectus which in your opinion may thereby be made necessary. The
         term "Underwriter" as used in this Agreement shall include any person
         substituted under this Section with like effect as if such person had
         originally been a party to this Agreement with respect to such Shares.

                  (b) If, after giving effect to any arrangements for the
         purchase of the Shares of a defaulting Underwriter or Underwriters by
         you and the Company as provided in subsection (a) above, the aggregate
         number of such Shares which remains unpurchased does not exceed
         one-eleventh of the aggregate number of all the Shares to be purchased
         at such Time of Delivery, then the Company shall have the right to
         require each non-defaulting Underwriter to purchase the number of
         shares which such Underwriter agreed to purchase hereunder at such Time
         of Delivery and, in addition, to require each non-defaulting
         Underwriter to purchase its pro rata share (based on the number of
         Shares which such Underwriter agreed to purchase hereunder) of the
         Shares of such defaulting Underwriter or Underwriters for which such
         arrangements have not been made; but nothing herein shall relieve a
         defaulting Underwriter from liability for its default.

                  (c) If, after giving effect to any arrangements for the
         purchase of the Shares of a defaulting Underwriter or Underwriters by
         you and the Company as provided in subsection (a)


                                       18
<PAGE>   19

Draft of December 12, 2000


         above, the aggregate number of such Shares which remains unpurchased
         exceeds one-eleventh of the aggregate number of all the Shares to be
         purchased at such Time of Delivery, or if the Company shall not
         exercise the right described in subsection (c) above to require
         non-defaulting Underwriters to purchase Shares of a defaulting
         Underwriter or Underwriters, then this Agreement (or, with respect to
         the Second Time of Delivery, the obligations of the Underwriters to
         purchase and of the Company to sell the Optional Shares) shall
         thereupon terminate, without liability on the part of any
         non-defaulting Underwriter or the Company, except for the expenses to
         be borne by the Company and the Underwriters as provided in Section 6
         hereof and the indemnity and contribution agreements in Section 8
         hereof; but nothing herein shall relieve a defaulting Underwriter from
         liability for its default.

         10.    The respective indemnities, agreements, representations,
warranties and other statements of the Company and the several Underwriters, as
set forth in this Agreement or made by or on behalf of them, respectively,
pursuant to this Agreement, shall remain in full force and effect, regardless of
any investigation (or any statement as to the results thereof) made by or on
behalf of any Underwriter or any controlling person of any Underwriter, or the
Company, or any officer or director or controlling person of the Company, and
shall survive delivery of and payment for the Shares.

         11.   If this Agreement shall be terminated pursuant to Section 9
hereof, the Company shall not then be under any liability to any Underwriter
except as provided in Sections 6 and 8 hereof; but, if for any other reason, any
Shares are not delivered by or on behalf of the Company as provided herein, the
Company will reimburse the Underwriters through you for all out-of-pocket
expenses approved in writing by you, including fees and disbursements of
counsel, reasonably incurred by the Underwriters in making preparations for the
purchase, sale and delivery of the Shares not so delivered, but the Company
shall then be under no further liability to any Underwriter except as provided
in Sections 6 and 8 hereof.

         12.   In all dealings hereunder, you shall act on behalf of each of the
Underwriters, and the parties hereto shall be entitled to act and rely upon any
statement, request, notice or agreement on behalf of any Underwriter made or
given by you jointly or by Goldman, Sachs & Co. on behalf of you as the
representatives.

               All statements, requests, notices and agreements hereunder shall
be in writing, and if to the Underwriters shall be delivered or sent by mail,
telex or facsimile transmission to you as the representatives in care of
Goldman, Sachs & Co. at 32 Old Slip, 21st Floor, New York, New York 10005,
Attention: Registration Department; and if to the Company shall be delivered or
sent by mail to the address of the Company set forth in the Registration
Statement, Attention: Secretary; provided, however, that any notice to an
Underwriter pursuant to Section 9(c) hereof shall be delivered or sent by mail,
telex or facsimile transmission to such Underwriter at its address set forth in
its Underwriters' Questionnaire, or telex constituting such Questionnaire, which
address will be supplied to the Company by you upon request. Any such
statements, requests, notices or agreements shall take effect upon receipt
thereof.

                                       19
<PAGE>   20

Draft of December 12, 2000


         13.   This Agreement shall be binding upon, and inure solely to the
benefit of, the Underwriters, the Company and, to the extent provided in
Sections 8 and 10 hereof, the officers and directors of the Company and each
person who controls the Company or any Underwriter, and their respective heirs,
executors, administrators, successors and assigns, and no other person shall
acquire or have any right under or by virtue of this Agreement. No purchaser of
any of the Shares from any Underwriter shall be deemed a successor or assign by
reason merely of such purchase.

         14.   Time shall be of the essence of this Agreement. As used herein,
the term "business day" shall mean any day when the Commission's office in
Washington, D.C. is open for business.

         15.   This Agreement shall be governed by and construed in accordance
with the laws of the State of New York.

         16.   This Agreement may be executed by any one or more of the parties
hereto in any number of counterparts, each of which shall be deemed to be an
original, but all such counterparts shall together constitute one and the same
instrument.

               If the foregoing is in accordance with your understanding, please
sign and return to us ten counterparts hereof, and upon the acceptance hereof by
you, on behalf of each of the Underwriters, this letter and such acceptance
hereof shall constitute a binding agreement between each of the Underwriters and
the Company. It is understood that your acceptance of this letter on behalf of
each of the Underwriters is pursuant to the authority set forth in an Agreement
among Underwriters, the form of which shall be submitted to the Company for
examination upon request, but without warranty on your part as to the authority
of the signers thereof.


                                       Very truly yours,

                                       Encore Acquisition Company


                                       By:
                                          -------------------------------------
                                          Name:
                                          Title:


Accepted as of the date hereof:


Goldman, Sachs & Co.,
Credit Suisse First Boston Corporation,
Dain Rauscher Incorporated, and
Petrie Parkman & Co., Inc.

                                       20
<PAGE>   21

Draft of December 12, 2000


By:
   --------------------------------------
Goldman, Sachs & Co.

    On behalf of each of the Underwriters







                                       21

<PAGE>   22

Draft of December 12, 2000



                                   SCHEDULE I


<TABLE>
<CAPTION>
                                                                                  NUMBER OF OPTIONAL
                                                                                     SHARES TO BE
                                                          TOTAL NUMBER OF            PURCHASED IF
                                                            FIRM SHARES             MAXIMUM OPTION
                  UNDERWRITER                             TO BE PURCHASED              EXERCISED
                  -----------                             ---------------              ---------
<S>                                                       <C>                    <C>
Goldman, Sachs & Co............................
Credit Suisse First Boston Corporation.........
Dain Rauscher Incorporated.....................
Petrie Parkman & Co., Inc......................







                                                         -----------------        ----------------------
       Total...................................
                                                         =================        ======================
</TABLE>




                                       22
<PAGE>   23

Draft of December 12, 2000






                                                                       ANNEX I

                 [FORM OF ANNEX I DESCRIPTION OF COMFORT LETTER
                    FOR REGISTRATION STATEMENTS ON FORM S-1]


         Pursuant to Section 8(d) of the Underwriting Agreement, the accountants
shall furnish letters to the Underwriters to the effect that:


                  (i) They are independent certified public accountants with
         respect to the Company and its subsidiaries within the meaning of the
         Act and the applicable published rules and regulations thereunder;


                  (ii) In their opinion, the financial statements and any
         supplementary financial information and schedules (and, if applicable,
         financial forecasts and/or pro forma financial information) examined by
         them and included in the Prospectus or the Registration Statement
         comply as to form in all material respects with the applicable
         accounting requirements of the Act and the related published rules and
         regulations thereunder; and, if applicable, they have made a review in
         accordance with standards established by the American Institute of
         Certified Public Accountants of the unaudited consolidated interim
         financial statements, selected financial data, pro forma financial
         information, financial forecasts and/or condensed financial statements
         derived from audited financial statements of the Company for the
         periods specified in such letter, as indicated in their reports
         thereon, copies of which have been separately furnished to the
         representatives of the Underwriters (the "Representatives");

                  (iii) They have made a review in accordance with standards
         established by the American Institute of Certified Public Accountants
         of the unaudited condensed consolidated statements of income,
         consolidated balance sheets and consolidated statements of cash flows
         included in the Prospectus as indicated in their reports thereon copies
         of which have been separately furnished to the Representatives and on
         the basis of specified procedures including inquiries of officials of
         the Company who have responsibility for financial and accounting
         matters regarding whether the unaudited condensed consolidated
         financial statements referred to in paragraph (vi)(A)(i) below comply
         as to form in all material respects with the applicable accounting
         requirements of the Act and the related published rules and
         regulations, nothing came to their attention that causes them to
         believe that the unaudited condensed consolidated financial statements
         do not comply as to form in all material respects with the applicable
         accounting requirements of the Act and the related published rules and
         regulations;

                  (iv) The unaudited selected financial information with respect
         to the consolidated results of operations and financial position of the
         Company for the two most recent fiscal years included in the Prospectus
         agrees with the corresponding amounts (after restatements where
         applicable) in the audited consolidated financial statements for such
         two fiscal years;


<PAGE>   24

Draft of December 12, 2000



                  (v) They have compared the information in the Prospectus under
         selected captions with the disclosure requirements of Regulation S-K
         and on the basis of limited procedures specified in such letter nothing
         came to their attention as a result of the foregoing procedures that
         caused them to believe that this information does not conform in all
         material respects with the disclosure requirements of Items 301, 302,
         402 and 503(d), respectively, of Regulation S-K;

                  (vi) On the basis of limited procedures, not constituting an
         examination in accordance with generally accepted auditing standards,
         consisting of a reading of the unaudited financial statements and other
         information referred to below, a reading of the latest available
         interim financial statements of the Company and its subsidiaries,
         inspection of the minute books of the Company and its subsidiaries
         since the date of the latest audited financial statements included in
         the Prospectus, inquiries of officials of the Company and its
         subsidiaries responsible for financial and accounting matters and such
         other inquiries and procedures as may be specified in such letter,
         nothing came to their attention that caused them to believe that:

                           (A) (i) the unaudited consolidated statements of
                  income, consolidated balance sheets and consolidated
                  statements of cash flows included in the Prospectus do not
                  comply as to form in all material respects with the applicable
                  accounting requirements of the Act and the related published
                  rules and regulations, or (ii) any material modifications
                  should be made to the unaudited condensed consolidated
                  statements of income, consolidated balance sheets and
                  consolidated statements of cash flows included in the
                  Prospectus for them to be in conformity with generally
                  accepted accounting principles;

                           (B) any other unaudited income statement data and
                  balance sheet items included in the Prospectus do not agree
                  with the corresponding items in the unaudited consolidated
                  financial statements from which such data and items were
                  derived, and any such unaudited data and items were not
                  determined on a basis substantially consistent with the basis
                  for the corresponding amounts in the audited consolidated
                  financial statements included in the Prospectus;

                           (C) the unaudited financial statements which were not
                  included in the Prospectus but from which were derived any
                  unaudited condensed financial statements referred to in clause
                  (A) and any unaudited income statement data and balance sheet
                  items included in the Prospectus and referred to in clause (B)
                  were not determined on a basis substantially consistent with
                  the basis for the audited consolidated financial statements
                  included in the Prospectus;

                           (D) any unaudited pro forma consolidated condensed
                  financial statements included in the Prospectus do not comply
                  as to form in all material respects with the applicable
                  accounting requirements of the Act and the published rules and


<PAGE>   25

Draft of December 12, 2000



                  regulations thereunder or the pro forma adjustments have not
                  been properly applied to the historical amounts in the
                  compilation of those statements;

                           (E) as of a specified date not more than five days
                  prior to the date of such letter, there have been any changes
                  in the consolidated capital stock (other than issuances of
                  capital stock upon exercise of options and stock appreciation
                  rights, upon earn-outs of performance shares and upon
                  conversions of convertible securities, in each case which were
                  outstanding on the date of the latest financial statements
                  included in the Prospectus) or any increase in the
                  consolidated long-term debt of the Company and its
                  subsidiaries, or any decreases in consolidated net current
                  assets or stockholders' equity or other items specified by the
                  Representatives, or any increases in any items specified by
                  the Representatives, in each case as compared with amounts
                  shown in the latest balance sheet included in the Prospectus,
                  except in each case for changes, increases or decreases which
                  the Prospectus discloses have occurred or may occur or which
                  are described in such letter; and

                           (F) for the period from the date of the latest
                  financial statements included in the Prospectus to the
                  specified date referred to in clause (E) there were any
                  decreases in consolidated net revenues or operating profit or
                  the total or per share amounts of consolidated net income or
                  other items specified by the Representatives, or any increases
                  in any items specified by the Representatives, in each case as
                  compared with the comparable period of the preceding year and
                  with any other period of corresponding length specified by the
                  Representatives, except in each case for decreases or
                  increases which the Prospectus discloses have occurred or may
                  occur or which are described in such letter; and


                  (vii) In addition to the examination referred to in their
         report(s) included in the Prospectus and the limited procedures,
         inspection of minute books, inquiries and other procedures referred to
         in paragraphs (iii) and (vi) above, they have carried out certain
         specified procedures, not constituting an examination in accordance
         with generally accepted auditing standards, with respect to certain
         amounts, percentages and financial information specified by the
         Representatives, which are derived from the general accounting records
         of the Company and its subsidiaries, which appear in the Prospectus, or
         in Part II of, or in exhibits and schedules to, the Registration
         Statement specified by the Representatives, and have compared certain
         of such amounts, percentages and financial information with the
         accounting records of the Company and its subsidiaries and have found
         them to be in agreement


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