Document:

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                              STANDSTILL AGREEMENT

     This Standstill Agreement (the "Agreement") is dated as of April 1, 2000
between Patina Oil & Gas Corporation, a Delaware corporation (the "Company"),
and Southwestern Eagle L.L.C. (the "Stockholder").

     WHEREAS, the Stockholder owns approximately 11.1% of the outstanding shares
of Common Stock (as defined herein), and the Stockholder desires to purchase
more shares of Voting Securities (as defined herein) of the Company from time to
time; and

     WHEREAS, the Company is willing, under the terms and conditions set forth
herein, not to take any actions to prevent the Stockholder from purchasing
additional shares of Voting Securities of the Company as long as a certain level
of ownership is not exceeded by the Stockholder and its Affiliates (as defined
herein).

     NOW, THEREFORE, in consideration of the premises and the mutual
representations, warranties, covenants and undertakings contained herein, and
for other good and valuable consideration, the receipt and sufficiency of which
are hereby acknowledged, the parties hereto agree as follows:

                                    ARTICLE 1

                                   DEFINITIONS

     SECTION 1.1 Definitions. (a) The following terms, as used herein, have the
following meanings:

     "Affiliate" means, with respect to any specified Person, any other Person
which, directly or indirectly, controls, is controlled by or is 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,
and the terms "affiliated," "controlling," and "controlled" have meanings
correlative to the foregoing.

     "Agreed Percentage" means 19.9%.

     "beneficial owner" has the meaning set forth in Rule 13d-3 under the
Exchange Act, and derivative terms such as "beneficially own" shall be given
corresponding meanings.

     "Board of Directors" means the Board of Directors of the Company.
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     "Change of Control" means the occurrence of any of the following events:
(a) any Person or Group is or becomes the beneficial owner (as defined herein,
except that a Person shall be deemed to have "beneficial ownership" of all
securities that such Person has the right to acquire, whether such right is
exercisable immediately or only after the passage of time), directly or
indirectly, of Voting Securities representing a Voting Percentage of more than
50%; (b) the Company adopts a plan of liquidation or sells, assigns, conveys,
transfers, leases or otherwise disposes of all or substantially all of its
assets to any Person; (c) the Company consolidates with, or merges with or into,
another Person, or any Person consolidates with, or merges with or into, the
Company, other than any such transaction in which, immediately after such
transaction, the beneficial owners (as defined herein, except that a Person
shall be deemed to have "beneficial ownership" of all securities that such
Person has the right to acquire, whether such right is exercisable immediately
or only after the passage of time) of Voting Securities of the Company
immediately prior to the transaction are the beneficial owners (as defined
herein, except that a Person shall be deemed to have "beneficial ownership" of
all securities that such Person has the right to acquire, whether such right is
exercisable immediately or only after the passage of time), directly or
indirectly, of Voting Securities of the surviving or transferee corporation, as
applicable, representing a Voting Percentage of more than 50%; or (d) during any
consecutive two-year period, individuals who at the beginning of such period
constituted the Board of Directors (together with any new directors whose
election by the Board of Directors or whose nomination for election by the
stockholders of the Corporation was approved by a vote of a majority of the
directors then still in office who were either directors at the beginning of
such period or whose election or nomination for election was previously so
approved) cease for any reason to constitute a majority of the Board of
Directors then in office.

     "Common Stock" means shares of common stock, $.01 par value, of the
Company.

     "Convertible Securities" means any securities convertible into or
exchangeable or exercisable for Common Stock.

     "Convertible Voting Securities" means Convertible Securities and any other
securities convertible into or exchangeable or exercisable for Voting Securities
other than Common Stock.

     "Current Shares" has the meaning set forth in Section 3.5.

     "DGCL" has the meaning set forth in Section 2.5.

     "Exchange Act" means the Securities Exchange Act of 1934, as amended, and
the rules and regulations promulgated thereunder.

     "Group" means a group within the meaning of Section 13(d)(3) of the
Exchange Act.

     "HSR Act" has the meaning set forth in Section 2.3.

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     "Offer" has the meaning set forth in Section 4.3(c).

     "Permitted Transferee" has the meaning set forth in Section 4.1.

     "Person" means an individual, corporation, partnership, limited liability
company, association, trust and any other entity or organization, including a
government or political subdivision or any agency or instrumentality thereof.

     "Restricted Securities" means (i) Common Stock, (ii) any other Voting
Securities or (iii) Convertible Voting Securities.

     "Section 4.3(c) Event" has the meaning set forth in Section 4.3(c).

     "Securities Act" means the Securities Act of 1933, as amended, and the
rules and regulations promulgated thereunder.

     "Standstill Period" means the period beginning on the date of this
Agreement and ending on the earlier of (i) the date of a Change of Control, (ii)
the fourth anniversary of the date of this Agreement, or (iii) the occurrence of
a Section 4.3(c) Event.

     "Stockholder Directors" has the meaning set forth in Section 4.2.

     "Subsidiary" means, with respect to any Person, any corporation or other
entity (and any predecessor thereof) of which the securities or other ownership
interests having ordinary voting power to elect a majority of the board of
directors or other persons performing similar functions are directly or
indirectly owned by such Person.

     "Total Voting Power" means the aggregate number of votes that holders of
Voting Securities would be entitled to cast in respect of Voting Securities.

     "Voting Percentage" means, with respect to any Person, the percentage of
the Total Voting Power beneficially owned by such Person.

     "Voting Securities" means securities of the Company having the power to
vote generally for the election of directors of the Company and shall include,
without limitation, the Common Stock and 8.5% Convertible Pay-in-Kind Preferred
Stock. "Voting Securities" as used with respect to any other Person means the
capital stock or other equity interests of any class or kind having the power to
vote generally for the election of directors or other members of the governing
body of such Person.

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     (b)  The following definitional provisions shall apply to this Agreement:

          (i)   The words "hereof," "herein," and "hereunder" and words of
                similar import, when used in this Agreement, shall refer to this
                Agreement as a whole and not to any particular provision of this
                Agreement.

          (ii)  The terms defined in the singular shall have a comparable
                meaning when used in the plural, and vice versa.

          (iii) Reference herein to a specific Section shall refer to a Section
                of this Agreement, unless the express context otherwise
                requires.

          (iv)  Wherever the word "include," "includes," or "including" is used
                in this Agreement, it shall be deemed to be followed by the
                words "without limitation."

                                   ARTICLE 2
                  REPRESENTATIONS AND WARRANTIES OF THE COMPANY

     The Company represents and warrants to the Stockholder that:

     SECTION 2.1 Corporate Existence and Power. The Company is a corporation
duly incorporated, validly existing and in good standing under the laws of the
State of Delaware and has all corporate powers required to carry on its business
as now conducted.

     SECTION 2.2 Corporate Authorization; Binding Agreement. The execution,
delivery and performance of this Agreement by the Company is within the
Company's corporate powers and has been duly authorized by all necessary
corporate action on the part of the Company. This Agreement constitutes a legal
and binding agreement of the Company, enforceable against the Company in
accordance with its terms, except (a) as such enforcement is limited by
bankruptcy, insolvency and other similar laws affecting the enforcement of
creditors' rights generally and (b) for limitations imposed by general
principles of equity.

     SECTION 2.3 Compliance. The execution, delivery and performance of this
Agreement by the Company requires no action by or in respect of, or filing with,
any governmental or non-governmental body, agency, official or authority other
than (a) compliance with any applicable requirements of the Exchange Act, (b)
compliance with the applicable requirements of the Hart-Scott-Rodino Antitrust
Improvements Act of 1976, as amended (the "HSR Act"), and (c) other filings,
notifications and consents that are immaterial to the consummation of the
transactions contemplated hereby.

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     SECTION 2.4 Non-contravention. Assuming compliance with the matters
referred to in Section 2.3, the execution, delivery and performance of this
Agreement by the Company do not and will not (a) violate the certificate of
incorporation or bylaws of the Company, (b) violate any applicable law, rule,
regulation, judgment, injunction, order or decree binding upon the Company,
other than violations that would be immaterial to the Company or the
Stockholder, or (c) constitute a default under any agreement or other instrument
binding upon the Company.

     SECTION 2.5 State Takeover Statutes. The Board of Directors of the Company,
at a meeting duly called (or for which notice was duly waived by all directors
of the Company) and held on April 11, 2000, has approved the acquisition by the
Stockholder of up to the Agreed Percentage of Voting Securities of the Company
subject to the terms of this Agreement, and such approval by the Board of
Directors constitutes approval of the transactions contemplated by this
Agreement pursuant to which the stockholder may become an interested stockholder
under the provisions of Section 203 of the Delaware General Corporation Law (the
"DGCL"), and constitutes all actions necessary to ensure that the restrictions
contained in Section 203 of the DGCL will not apply to Stockholder in connection
with or as a result of such transactions. To the Company's knowledge, no other
state takeover statute is applicable to the transactions contemplated by this
Agreement.

     SECTION 2.6 Capitalization. As of the date of this Agreement, the
authorized capital stock of the Company consists of (i) 100,000,000 shares of
Common Stock, of which 16,283,120 shares are issued and outstanding; and (ii)
5,000,000 shares of preferred stock of which 2,000,000 shares are designated as
8.5% Convertible Pay-in-Kind Preferred Stock (the "Convertible Preferred
Stock"), of which 1,818,511 shares are issued and outstanding. The Convertible
Preferred Stock is convertible at the option of the holder thereof into
4,785,594 shares of Common Stock. All of the presently outstanding shares of
capital stock of the Company have been duly and validly authorized and issued
and are fully paid and non-assessable. The relative rights, preferences and
restrictions relating to the Common Stock and the Convertible Preferred Stock
are set forth in the Company's Certificate of Incorporation, as amended, and the
Certificate of Designation for the Convertible Preferred Stock, as amended and
corrected. In addition, the Company has outstanding 2,919,451 of its $12.50
Warrants exercisable for the purchase of 2,919,451 shares of the Common Stock,
such shares of Common Stock being reserved by the Company for exercise of the
$12.50 Warrants.

                                    ARTICLE 3
               REPRESENTATIONS AND WARRANTIES OF THE STOCKHOLDER

     The Stockholder represents and warrants to the Company that:

     SECTION 3.1 Existence and Power. The Stockholder is a limited liability
company duly organized, validly existing and in good standing under the laws of
its jurisdiction of organization.

     SECTION 3.2 Authorization. The execution, delivery and performance of this
Agreement

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by the Stockholder are within the Stockholder's powers and have been duly
authorized by all necessary action on the part of the Stockholder. This
Agreement constitutes a legal, valid and binding agreement of the Stockholder,
enforceable against the Stockholder in accordance with its terms, except (a) as
such enforcement is limited by bankruptcy, insolvency and other similar laws
effecting the enforcement of creditors' rights generally and (b) for limitations
imposed by general principles of equity.

     SECTION 3.3 Compliance. The execution, delivery and performance of this
Agreement by the Stockholder requires no action by or in respect of, or filing
with, any governmental or non-governmental body, agency or official or any other
Person other than (a) compliance with any applicable requirements of the
Exchange Act, (b) compliance with the applicable requirements of the HSR Act,
and (c) other filings or notifications that are immaterial to the consummation
of the transactions contemplated hereby.

     SECTION 3.4 Non-contravention. Assuming compliance with the matters
referred to in Section 3.3, the execution, delivery and performance of this
Agreement by the Stockholder does not and will not (a) violate the internal
governance documents of the Stockholder, (b) violate any applicable law, rule,
regulation, judgment, injunction, order or decree binding upon the Stockholder,
except for any such violations which would be immaterial to the Company or the
Stockholder, or (c) constitute a default under any agreement or other instrument
binding upon the Stockholder.

     SECTION 3.5 Current Ownership. The Stockholder is the record and beneficial
owner of 1,775,900 shares of Common Stock (the "Current Shares"). Except for the
Current Shares, neither the Stockholder nor any of its Affiliates beneficially
owns Restricted Securities.

                                   ARTICLE 4
                          COVENANTS OF THE STOCKHOLDER

     The Stockholder agrees that:

     SECTION 4.1 Sale or Transfer of Restricted Securities. During the
Standstill Period, the Stockholder will not, and will not permit its Affiliates
to, directly or indirectly, sell, pledge, encumber or otherwise transfer, or
agree to sell, pledge, encumber or otherwise transfer, any Restricted
Securities; provided that the Stockholder and its Affiliates may sell, pledge,
encumber or otherwise transfer Restricted Securities (a) in an amount (whether
in one or more transactions) that would not exceed twice the amount permitted to
be sold by affiliates (within the meaning of Rule 144) of the Company under
paragraph (e)(1) of Rule 144 in effect as of the date of this Agreement;
provided that this clause (a) may be utilized by the Stockholder and its
Affiliates only if the Stockholder and its Affiliates in good faith have no
reason to believe that any transferee of such Restricted Securities would not be
a Permitted Transferee, (b) to a commercial bank or other financial institution
in connection with a bona fide financing transaction by the Stockholder;

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provided that such bank or other financial institution agrees to comply with the
transfer, voting and other restrictions set forth in this Agreement with respect
to such stock, and (c) to Permitted Transferees. A "Permitted Transferee" is a
Person who, after giving effect to such sale, pledge, encumbrance or transfer,
would, together with its Affiliates and with any members of a Group in which
such Person or any of its Affiliates is a member, beneficially own Restricted
Securities representing less than 5% of the Total Voting Power and less than 5%
of the aggregate number of outstanding shares of Common Stock (assuming, in each
case, the conversion, exercise or exchange of all Convertible Voting Securities
beneficially owned by such Person, its Affiliates and such Group members,
whether or not such Convertible Voting Securities are convertible, exercisable
or exchangeable within 60 days, and otherwise making all beneficial ownership
calculations consistent with Rule 13d-3 of the Exchange Act).

     SECTION 4.2 Acquisition of Voting Securities. Subject to the restrictions
set forth herein, the Stockholder may acquire additional Voting Securities of
the Company and the Company will not take any action to prevent such acquisition
or otherwise limit or restrict the Stockholder's rights with respect thereto.
During the Standstill Period, and notwithstanding anything in this Agreement to
the contrary, without the prior written consent of the Board of Directors
specifically expressed in a resolution adopted by a majority of the directors of
the Company who are not Affiliates of the Stockholder or members of a Group in
which the Stockholder or any of its Affiliates is a member ("Stockholder
Directors"), the Stockholder will not, and will not permit its Affiliates to,
purchase or otherwise acquire, directly or indirectly, or agree or offer to
purchase or otherwise acquire, any Restricted Securities if, as a result
thereof, the Stockholder, together with its Affiliates and with any members of a
Group in which the Stockholder or any of its Affiliates is a member, would, in
the aggregate, beneficially own Voting Securities representing more than the
Agreed Percentage of the Total Voting Power (assuming the conversion, exercise
or exchange of all Convertible Voting Securities beneficially owned by the
Stockholder, its Affiliates and such Group members and making all beneficial
ownership calculations consistent with Rule 13d-3 of the Exchange Act).

     SECTION 4.3 Standstill. (a) During the Standstill Period, the Stockholder
agrees that, without the prior written consent of the Board of Directors
specifically expressed in a resolution adopted by a majority of the directors of
the Company who are not Stockholder Directors, the Stockholder will not and will
not permit its Affiliates to:

          (i)  initiate or propose any matter for a vote of the stockholders of
     the Company or "solicit," or become a "participant," directly or
     indirectly, in any "solicitation" of proxies (as such terms are defined
     under the Exchange Act) from any holder of Voting Securities in connection
     with any vote or other action on any matter or agree or announce its
     intention to vote with any Person undertaking a "solicitation" or seek to
     advise, encourage or influence any Person with respect to the voting of any
     Voting Security;

          (ii) seek, solicit, propose (in a manner that is intended to require,
     or would reasonably be expected to require, public disclosure) or make any
     statement with respect to, or otherwise participate in or support, any
     merger, consolidation, business combination,

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     tender or exchange offer, sale or purchase of assets, sale or purchase of
     securities (except as and to the extent specifically permitted by this
     Section 4.3), dissolution, liquidation, restructuring, recapitalization or
     similar transactions of or involving the Company or any of its
     Subsidiaries;

          (iii) form, join or in any way participate in a Group with respect to
     any Restricted Securities;

          (iv) grant any "proxies" (as defined under the Exchange Act) with
     respect to any Voting Securities to any Person (except as recommended by
     the Board of Directors of the Company) or deposit any Voting Securities or
     Convertible Voting Securities in a voting trust or enter into any other
     arrangement or agreement with respect to the voting thereof except as set
     forth in Section 4.4;

          (v)  otherwise act, alone or in concert with others, to control or
     seek to control or influence or seek to influence the management, Board of
     Directors or policies of the Company, except that engaging in private
     meetings with management of the Company in regard to the day-to-day
     operations and the ordinary course of business of the Company shall not be
     prohibited hereby;

          (vi) seek, alone or in concert with others, representation on the
     Board of Directors or seek the removal of any member of the Board of
     Directors or a change in the size or composition of the Board of Directors;

          (vii) make any publicly disclosed proposal or enter into any
     discussion regarding any of the foregoing;

          (viii) make any proposal, statement or inquiry, or disclose any
     intention, plan or arrangement (whether written or oral), inconsistent with
     the foregoing, or make or disclose any request to amend, waive or terminate
     any provision of this Article 4;

          (ix) have any discussions or communications with, or enter into any
     arrangements, understandings or agreements (whether written or oral) with,
     or advise, finance, assist or encourage, any other Person in connection
     with any of the foregoing; or

          (x)  take any action challenging the validity or enforceability of any
     provisions of this Article IV.

     (b)  Nothing contained in this Section shall be deemed in any way to
prohibit or limit any transactions in the ordinary course of business between
the Company and its Subsidiaries, on the one hand, and the Stockholder and its
Affiliates, on the other hand.

     (c)  The Standstill Period shall terminate (i) if any person shall commence
and not

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withdraw a bona fide unsolicited tender or exchange offer that if successful
would result in a Change of Control (an "Offer"), unless within 10 business days
after the commencement of such Offer, the Company shall have publicly
recommended that the Offer not be accepted, (ii) upon the commencement of any
transaction that is a "Rule 13e-3 transaction," as such term is defined in Rule
13e-3(a)(3) promulgated under the Exchange Act or (iii) upon the commencement of
any transaction by any holder of 5% or more of the Total Voting Power, the
consummation of which would result in the de-registration of the Company's
Common Stock under the Exchange Act. The termination of the Standstill Period
pursuant to this Section 4.3(c) is referred to herein as a "Section 4.3(c)
Event."

     SECTION 4.4 Presentation of Matters to the Board of Directors.
Notwithstanding anything to the contrary in this Agreement, whenever pursuant to
the terms hereof the Stockholder is permitted to take any action with the prior
consent of the Board of Directors, the Stockholder shall be entitled to present
the matter to, and discuss the matter with, the Board of Directors prior to
receiving such consent without being deemed to have violated any of the
restrictions set forth in this Agreement.

     SECTION 4.5 Voting Arrangements. During the Standstill Period, the
Stockholder shall vote and cause to be voted all Voting Securities owned by the
Stockholder or any Affiliate of the Stockholder on all matters, other than
nominees to the Board of Directors whose nominations are made by the Board of
Directors, submitted to the holders of Voting Securities in accordance with the
recommendations of the Company's Board of Directors. The Stockholder shall cause
all Voting Securities owned by the Stockholder or any Affiliate of the
Stockholder to be represented, in person or by proxy, at all meetings of holders
of Voting Securities of which the Stockholder has actual notice, so that such
Voting Securities may be counted for the purpose of determining the presence of
a quorum at such meetings.

     SECTION 4.6 Suspension of Obligations. If at any time during the Standstill
Period the Stockholder and its Affiliates, in compliance with this Agreement, no
longer beneficially own 5% or more of the outstanding Restricted Securities,
then notwithstanding any provision in this Agreement to the contrary, during the
period beginning on the date of such occurrence and ending on the date on which
the Stockholder and its Affiliates again beneficially own 5% or more of the
outstanding Restricted Securities, the Stockholder shall not be required to
comply with the covenants and agreements set forth in Article 4 of this
Agreement.

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                                   ARTICLE 5
                                  MISCELLANEOUS

     SECTION 5.1 Notices. All notices, requests and other communications to any
party hereunder shall be in writing and shall be deemed duly given, effective
(a) three business days later, if sent by registered or certified mail, return
receipt requested, postage prepaid, (b) when sent by telecopier or fax, provided
that the telecopy or fax is promptly confirmed by telephone confirmation
thereof, (c) when served, if delivered personally to the intended recipient, and
(d) one business day later, if sent by overnight delivery via a national courier
service, and in each case, addressed,

     if to the Stockholder, to:

                  Southwestern Eagle L.L.C.
                  1675 Larimer Street, Suite 820
                  Denver, Colorado 80202
                  Attention: James W. Williams, Jr.
                  Fax:

     with a copy to:

                  M. Walker Baus
                  LeCorgne, Livaudais & Baus
                  Suite 210
                  203 Carondelet Street
                  New Orleans, Louisiana 70130
                  Fax: (504) 523-5884

     if to the Company, to:

                  Patina Oil & Gas Corporation
                  380 Madison Avenue
                  11th Floor
                  New York, New York 10017
                  Attn: Thomas J. Edelman
                  Fax: (212) 888-6877

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     with a copy to:

                  Patina Oil & Gas Corporation
                  1625 Broadway, Suite 2000
                  Denver, Colorado 80202
                  Attn: Jay W. Decker
                  Fax: (303) 389-3680

Any party may change the address to which notices or other communications
hereunder are to be delivered by giving the other party notice in the manner
herein set forth.

     SECTION 5.2 Amendments and Waivers. Any provision of this Agreement may be
amended or waived if, but only if, such amendment or waiver is in writing and is
signed, in the case of an amendment, by each party to this Agreement, or in the
case of a waiver, by the party against whom the waiver is to be effective. No
failure or delay by any party in exercising any right, power or privilege
hereunder shall operate as a waiver thereof nor shall any single or partial
exercise thereof preclude any other or further exercise thereof or the exercise
of any other right, power or privilege. The rights and remedies herein provided
shall be cumulative.

     SECTION 5.3 Expenses. All costs and expenses incurred in connection with
this Agreement shall be paid by the party incurring such cost or expense.

     SECTION 5.4 Assignment. The rights and obligations of the parties hereunder
cannot be assigned or delegated.

     SECTION 5.5 Governing Law. This Agreement shall be governed by and
construed in accordance with the law of the State of Delaware, without regard to
the conflicts of law rules of such state.

     SECTION 5.6 Counterparts; Third Party Beneficiaries. This Agreement may be
signed in any number of counterparts, each of which shall be an original, with
the same effect as if the signatures thereto and hereto were upon the same
instrument. This Agreement shall become effective when each party hereto shall
have received a counterpart hereof signed by the other party hereto. No
provision of this Agreement is intended to confer upon any Person other than the
parties hereto any rights or remedies hereunder.

     SECTION 5.7 Entire Agreement. This Agreement constitutes the entire
agreement between the parties with respect to the subject matter of this
Agreement and supersedes all prior agreements and understandings, both oral and
written, between the parties with respect to the subject matter of this
Agreement.

     SECTION 5.8 Captions. The captions herein are included for convenience of
reference only and shall be ignored in the construction or interpretation
hereof.

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     SECTION 5.9 Severability. Except as otherwise provided in the last sentence
of this Section 5.9, the provisions of this Agreement shall be deemed severable
and the invalidity or unenforceability of any provision shall not affect the
validity or enforceability of the other provisions hereof. Except as otherwise
provided in the last sentence of this Section 5.9, if any provision of this
Agreement, or the application thereof to any Person or any circumstance, is
invalid or unenforceable, (a) a suitable and equitable provision shall be
substituted therefor in order to carry out, so far as may be valid and
enforceable, the intent and purpose of such invalid or unenforceable provision
and (b) the remainder of this Agreement and the application of such provision to
other Persons or circumstances shall not be affected by such invalidity or
unenforceability, nor shall not be affected by such invalidity or
unenforceability, nor shall such invalidity or unenforceability affect the
validity or enforceability of such provision, or the application thereof, in any
other jurisdiction. Notwithstanding anything in this Section 5.9 to the
contrary, if any provision of Article 4 is determined by any court of competent
jurisdiction to be invalid or unenforceable, the provisions of Section 2.5 shall
be automatically void ab initio and shall have no force or effect.

     SECTION 5.10 Specific Performance. The parties hereto agree that the remedy
at law for any breach of this Agreement will be inadequate and that any party by
whom this Agreement is enforceable shall be entitled to specific performance in
addition to any other appropriate relief or remedy. Such party may, in its sole
discretion, apply to any court of competent jurisdiction for specific
performance or injunctive or such other relief as such court may deem just and
proper in order to enforce this Agreement or prevent any violation hereof and,
to the extent permitted by applicable law, each party waives any objection to
the imposition of such relief.

     SECTION 5.11 Legends. (a) The Stockholder agrees that all Restricted
Securities that are beneficially owned now or in the future during the
Standstill Period by the Stockholder or any of its Affiliates (including without
limitation the Current Shares) shall be in certificated form. The Stockholder
shall promptly deliver all certificates representing such Restricted Securities
to the Company so that the Company may place the following legend on such
certificates:

          "The securities represented hereby are subject to certain restrictions
          under the terms of a Standstill Agreement dated as of April 1, 2000,
          as amended from time to time, between Patina Oil & Gas Corporation and
          Southwestern Eagle L.L.C. and may not be offered, sold, transferred or
          otherwise disposed of except in accordance with the terms of such
          Standstill Agreement."

     (b)  The Company agrees that, at the request of the Stockholder, it will
remove the above legend from all certificates at the time after which the
restrictions under this Agreement are no longer applicable. If the Stockholder
transfers any Restricted Securities in accordance with this Agreement, the
Company will issue to such transferee a certificate representing such
transferred Restricted Securities without the legend contemplated above.

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     IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed by their respective authorized officers as of the day and year
first above written.

                                       PATINA OIL & GAS CORPORATION

                                       By: /s/ Thomas J. Edelman
                                          -----------------------------------
                                           Name:  Thomas J. Edelman
                                           Title: Chief Executive Officer

                                       SOUTHWESTERN EAGLE L.L.C.

                                       By: /s/ James W. Williams, Jr.
                                          -----------------------------------
                                           Name:  James W. Williams, Jr.
                                           Title: President

                                       13<PAGE>

                                                                    Exhibit 10.1

                                 CVS CORPORATION

                           EXECUTIVE RETENTION PROGRAM

1. PURPOSE. The purpose of the CVS Executive Retention Program (the "Program")
is to induce selected executives to remain with CVS Corporation ("CVS") by means
of special awards to be granted one-half in shares of CVS stock and one-half in
cash.

2. ADMINISTRATION. The Program shall be administered by the Compensation
Committee (the "Committee") of the Board of Directors (the "Board") of CVS. The
Committee shall have full and final authority to provide award agreements and
rules and regulations for the administration of the Program, construe and
interpret the provisions of the Program and award agreement, and to make all
other declaration and decisions as the Committee may deem necessary or valuable
for the administration of the Plan.

3. ELIGIBILITY. Executives employed by CVS who are selected by the Committee
shall be eligible to receive an award under this Program.

4. AWARDS. The Committee shall determine the persons (a "Participant") to whom
awards shall be made, the size of each Participant's award and the terms and
conditions relating to such award, including, but not limited to, vesting
requirements and the effect of the death of the Participant.

         Except as otherwise determined by the Committee, as soon as practicable
after an award has vested the cash part of each award shall be paid and the CVS
stock part shall be settled by the issuance of new share certificates reflecting
the absence of any forfeiture provisions, provided, however, that if the
Participant is not employed by CVS of an affiliated entity on the date of such
payment the entire award shall be forfeited, including any shares previously
issued at the time of grant. Upon the occurrence of a change in control of CVS,
as defined in the CVS Corporation 1997 Incentive Compensation Plan (a "Change in
Control"), all awards shall be immediately 100% vested and nonforfeitable and
shall be paidout as soon as possible.

5.       MISCELLANEOUS

         (a) COMPLIANCE WITH LEGAL AND OTHER REQUIREMENTS. CVS may, to the
extent deemed necessary or advisable by the Committee, postpone the issuance or
delivery of CVS stock or payment of other benefits under any award until
completion of such registration or qualification of such stock or other required
action under any federal or state law, rule or regulation, listing or other
required action with respect to any stock exchange or automated quotation system
upon which such stock are listed or quoted, or compliance with any other
obligation or CVS, as the Committee may consider appropriate, and may require
any Participant to make such representations, furnish such information and
comply with or be subject to such other conditions as it may consider
appropriate in connection with the issuance or delivery of stock or payment of
other benefits in compliance with applicable laws, rules, and regulations,
listing requirements, or other obligations. The foregoing notwithstanding, in
connection with a Change in Control, CVS shall take or cause to be taken no
action, and shall undertake or permit to arise no legal or contractual
obligation, that results or would result in any postponement of the issuance or
delivery of stock or payment of benefits under any award or the imposition of
any other conditions on such issuance, delivery or payment, to the extent that
such postponement or other condition would represent a greater burden on a
Participant than existed on the 90th day preceding the Change in Control.

         (b) LIMITS ON TRANSFERABILITY; BENEFICIARIES. No award or other right
or interest of a Participant under the Program shall be pledged, hypothecated or
otherwise encumbered or subject to any lien, obligation or liability of such
Participant to any party (other than CVS or a subsidiary), or assigned or
transferred by such Participant otherwise than by will or the laws of descent
and distribution or to a beneficiary upon the death of a Participant, and such
awards or rights that may be exercisable shall be exercised during the lifetime
of the Participant only by

<PAGE>

the Participant or his or her guardian or legal representative. A beneficiary,
or other person claiming any rights under the Program from or through any
Participant shall be subject to all terms and conditions of the Program and any
award agreement applicable to such Participant, except as otherwise determined
by the Committee, and to any additional terms and conditions deemed necessary or
appropriate by the Committee.

         (c) ADJUSTMENTS. In the event that any dividend or other distribution
(whether in the form of cash, stock, or other property), recapitalization,
forward or reverse split, reorganization, merger, consolidation, spin-off,
combination, repurchase, share exchange, liquidation, dissolution or other
similar corporate transaction or event affects the stock such that an adjustment
is determined by the Committee to be appropriate under the Program, then the
Committee shall, in such manner as it may deem equitable, adjust the number and
kind of shares of stock subject to or deliverable in respect of outstanding
Awards.

         (d) TAXES. CVS and any subsidiary is authorized to withhold from any
award granted, any payment relating to an award under the Plan, including from a
distribution or stock, or any payroll or other payment to a Participant, amounts
of withholding and other taxes due or potentially payable in connection with any
transaction involving an award, and to take such other action as the Committee
may deem advisable to enable CVS and Participants to satisfy obligations for the
payment of withholding or receive stock or other property and to make cash
payments in respect thereof in satisfaction of a Participant's tax obligations,
either on a mandatory or elective basis is the discretion of the Committee.

         (e) CHANGES TO THE PLAN AND AWARDS. The Board may amend, alter, suspend
discontinue or terminate the Program or the Committee's authority to grant
awards under the Program without the consent of Participants, except that
without the consent of an affected Participant, no such Board action may
materially and adversely affect the rights of such Participant under any
previously granted and outstanding award. The Committee may waive any conditions
or rights under, or amend, alter, suspend, discontinue or terminate any award
theretofore granted and any award agreement relating thereto, except as
otherwise provided in the Program, provided that, without the consent of an
affected Participant, no such Committee action may materially and adversely
affect the rights of such Participant under such award.

         (f) LIMITATION ON RIGHTS CONFERRED UNDER PROGRAM. Neither the Program
nor any action taken hereunder shall be construed as (i) giving any person or
Participant the right to continue as a Participant or in the employ or service
of CVS or a subsidiary, (ii) interfering in any way with the right of CVS or a
subsidiary to terminate any Participant's employment of service at any time,
(iii) giving a Participant any claim to be granted any award under the Program
or to be treated uniformly with other Participants and employees, or (iv)
conferring on a Participant any of the rights of a shareholder of CVS and until
the Participant is duly issued or transferred shares of stock in accordance with
the terms of an award.

     (g) UNFUNDED STATUS OF AWARDS; CREATION OF TRUSTS. The Program intended to
constitute an "unfunded" plan for incentive and deferred compensation. With
respect to any payments not yet made to a Participant or obligation to deliver
stock pursuant to an award, nothing contained in any award shall give any such
Participant any rights that are greater than those of a general creditor of CVS,
provided that the Committee may authorize the creation of trusts and deposit
therein cash, stock, other awards or other property, or make other arrangements
to meet CVS' obligations under the Program. Such trusts or other arrangements
shall be consistent with the "unfunded" status of the Program unless the
Committee otherwise determines with the consent of each affected Participant.

     (h) Any shares of stock to be issued in connection with an award may, in
the discretion of the Committee, be issued pursuant to the CVS Corporation 1997
Incentive Compensation Plan.

     (i) GOVERNING LAW. The validity, construction and effect of the Program,
any rules and regulations under the Program, and any award agreement shall be
determined in accordance with the Delaware General Corporation Law, without
giving effect to principles of conflicts of laws, and applicable federal law.

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