Exhibit 10.18


               AMENDMENT NO. 1, dated as of April 25, 2002 (this "Amendment No.
          1" or this "Amendment"), in respect of the SHORT-TERM REVOLVING CREDIT
          AGREEMENT, dated as of February 25, 1998, as amended and restated as
          of December 7, 2001 (the "Credit Agreement"), among BURLINGTON
          RESOURCES INC., a Delaware corporation (the "Borrower"), the financial
          institutions (the "Lenders") listed on the signature pages thereof,
          JPMorgan Chase Bank, as administrative agent (the "Administrative
          Agent") and as auction administrative agent, Citibank, N.A. and Fleet
          National Bank, as co-syndication agents, and Bank of America, N.A. and
          Toronto Dominion (Texas), Inc., as co-documentation agents.

     The Borrower has advised the Administrative Agent and the Lenders that it
desires to amend the Credit Agreement to eliminate any inconsistency between (i)
the requirements of Section 5.03(b)(ii) thereof with respect to the form, scope
and substance of the auditor's "negative assurance" letter referred to therein
and (ii) SAS 62 and other applicable accounting rules and guidelines in effect
from time to time, and has requested in connection therewith that the Credit
Agreement be amended as set forth in Section 1 below, and the parties hereto are
willing so to amend the Credit Agreement. Each capitalized term used but not
defined herein and defined in the Credit Agreement has the meaning assigned
thereto in the Credit Agreement.

     In consideration of the premises and the agreements and provisions herein
contained, the parties hereto hereby agree, on the terms and subject to the
conditions set forth herein, as follows:

     SECTION 1. Amendment and Waiver. (a) Upon the effectiveness of this
Amendment No. 1 as provided in Section 3 below, clause (ii) of Section 5.03(b)
of the Credit Agreement shall be amended to read in its entirety as follows:

          (ii) a letter from such accountants stating that in making the
          investigations necessary for such report they obtained no knowledge,
          except as specifically stated therein, of any Event of Default which
          is continuing hereunder or of any event not theretofore remedied which
          with notice or lapse of time or both would constitute such an Event of
          Default (which letter may be limited in form, scope and substance to
          the extent required by applicable accounting rules or guidelines in
          effect from time to time);

     (b) The Lenders hereby waive any Default that may exist or have existed at
or prior to the date of effectiveness hereof by reason of the delivery to the
Lenders of a letter referred to in Section 5.03(b)(ii) of the Credit Agreement
that was consistent with the requirements of Section 5.03(b)(ii) except for the
fact that such letter was limited in form, scope or substance in order to comply
with SAS 62 and any other applicable accounting rules and guidelines.


<PAGE>
                                      -2-


     SECTION 2. Representations and Warranties. The Borrower represents and
warrants as of the effective date of this Amendment to each of the Lenders that:

          (a) Immediately before and immediately after giving effect to this
     Amendment, the representations and warranties set forth in the Credit
     Agreement are true and correct in all material respects with the same
     effect as if made on the effective date hereof, except to the extent such
     representations and warranties expressly relate to an earlier date or
     period.

          (b) Immediately before and immediately after giving effect to this
     Amendment, no Event of Default or Default has occurred and is continuing
     that would not be cured by effectiveness of this Amendment No 1.

     SECTION 3. Conditions to Effectiveness. This Amendment No. 1 and the
amendment and waiver contained herein shall become effective as of the date
hereof when the Administrative Agent shall have received counterparts of this
Amendment No. 1 that, when taken together, bear the signatures of the Borrower,
the Administrative Agent, and the Majority Lenders.

     SECTION 4. Agreement. Except as specifically stated herein, the provisions
of the Credit Agreement are and shall remain in full force and effect. As used
therein, the terms "Credit Agreement", "herein", "hereunder", "hereinafter",
"hereto", "hereof" and words of similar import shall, unless the context
otherwise requires, refer to the Credit Agreement as amended hereby.

     SECTION 5. Applicable Law. THIS AMENDMENT SHALL BE GOVERNED BY, AND
CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.

     SECTION 6. Counterparts. This Amendment may be executed in two or more
counterparts, each of which shall constitute an original but all of which when
taken together shall constitute but one contract.

     SECTION 7. Expenses. The Borrower agrees to reimburse the Administrative
Agent for all out-of-pocket expenses incurred by it in connection with this
Amendment, including the reasonable fees, charges and disbursements of Cravath,
Swaine & Moore, counsel for the Administrative Agent.



<PAGE>




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


                       BURLINGTON RESOURCES INC.



                       By:    /s/ Daniel D. Hawk
                              --------------------------------------------------
                              Name:  Daniel D. Hawk
                              Title:  Vice President and Treasurer



                       JPMORGAN CHASE BANK, individually
                       and as Administrative Agent and Auction
                       Administrative Agent



                       By:    /s/ Russell A. Johnson
                              --------------------------------------------------
                              Name:  Russell A. Johnson
                              Title:  Vice President



                       CITIBANK, N.A., individually and as Co-Syndication Agent



                       By:    /s/ Amy K. Pincu
                              --------------------------------------------------
                              Name:  Amy K. Pincu
                              Title:  Attorney-In-Fact



                       FLEET NATIONAL BANK, individually
                       and as Co-Syndication Agent



                       By:    /s/ Allison I. Rossi
                              --------------------------------------------------
                              Name:  Allison I. Rossi
                              Title:  Vice President




<PAGE>


                       BANK OF AMERICA, N.A., individually
                       and as Co-Documentation Agent



                       By:    /s/ Richard L. Stein
                              --------------------------------------------------
                              Name:  Richard L. Stein
                              Title:  Principal



                       TORONTO DOMINION (TEXAS), INC.,
                       individually and as Co-Documentation Agent



                       By:    /s/ Ann S. Slanis
                              --------------------------------------------------
                              Name:  Ann S. Slanis
                              Title:  Vice President



                       THE BANK OF NOVA SCOTIA



                       By:    /s/ M. D. Smith
                              --------------------------------------------------
                              Name:  M. D. Smith
                              Title:  Agent, Operations



                       THE BANK OF TOKYO-MITSUBISHI, LTD.



                       By:    /s/ Kelton Glasscock
                              --------------------------------------------------
                              Name:  Kelton Glasscock
                              Title:  Vice President & Manager


<PAGE>


                       BNP PARIBAS



                       By:    /s/ Douglas R. Liftman
                              --------------------------------------------------
                              Name:  Douglas R. Liftman
                              Title:  Managing Director


                       By:    /s/ Betsy Jocher
                              --------------------------------------------------
                              Name:  Betsy Jocher
                              Title:  Vice President



                       MELLON BANK, N.A.



                       By:    /s/ Roger E. Howard
                              --------------------------------------------------
                              Name:  Roger E. Howard
                              Title:  Vice President



                       THE ROYAL BANK OF SCOTLAND PLC



                       By:    /s/ Scott Barton
                              --------------------------------------------------
                              Name:  Scott Barton
                              Title:  Senior Vice President



                       WACHOVIA BANK, N.A.



                       By:    /s/ Philip Trinder
                              --------------------------------------------------
                              Name:  Philip Trinder
                              Title:  Vice President



<PAGE>


                       ABN AMRO BANK



                       By:    /s/ Frank R. Russo, Jr.
                              --------------------------------------------------
                              Name:  Frank R. Russo, Jr.
                              Title:  Group Vice President


                       By:    /s/ Jeffery G. White
                              --------------------------------------------------
                              Name:  Jeffery G. White
                              Title:  Vice President



                       ROYAL BANK OF CANADA



                       By:    /s/ Lorne Gartner
                              --------------------------------------------------
                              Name:  Lorne Gartner
                              Title:  Vice President



                       BANK ONE, N.A. (MAIN OFFICE, CHICAGO)



                       By:    /s/ Ronald L. Dierker
                              --------------------------------------------------
                              Name:  Ronald L. Dierker
                              Title:  Director, Capital Markets



                       BARCLAYS BANK PLC



                       By:    /s/ Nicholas A. Bell
                              --------------------------------------------------
                              Name:  Nicholas A. Bell
                              Title:  Director


<PAGE>



                       THE NORTHERN TRUST COMPANY



                       By:    /s/ Ashish S. Bhagwat
                              --------------------------------------------------
                              Name:  Ashish S. Bhagwat
                              Title:  Vice President



                       MIZUHO CORPORATE BANK, LTD.



                       By:    /s/ Hirofumi Sugano
                              --------------------------------------------------
                              Name:  Hirofumi Sugano
                              Title:  Senior Vice President