Exhibit 4.2








                               FIFTH AMENDMENT TO
                                CREDIT AGREEMENT




                                     between






                     GOODRICH PETROLEUM COMPANY OF LOUISIANA
                             GPC, INC. OF LOUISIANA




                                       and





                                  COMPASS BANK




                                 Effective as of
                                October 16, 1997





                       FIFTH AMENDMENT TO CREDIT AGREEMENT
                       -----------------------------------

                  This FOURTH AMENDMENT TO CREDIT  AGREEMENT (this  "Amendment")
is made and  entered  into  effective  as of October  16,  1997,  by and between
GOODRICH PETROLEUM COMPANY OF LOUISIANA ("GPCL"), a Nevada corporation, formerly
known as American  National  Petroleum  Company,  successor by merger to Patrick
Petroleum  Corporation  of  Michigan,  a  Michigan  corporation,  GPC,  INC.  OF
LOUISIANA  ("GPC"),  a  Nevada  corporation,   (collectively,  the  "Borrower"),
GOODRICH  PETROLEUM  CORPORATION,  a  Delaware  corporation,  ("Goodrich"),  and
COMPASS BANK, a Texas state chartered banking corporation (the "Lender").

                              W I T N E S S E T H :
                              - - - - - - - - - -  

                  WHEREAS,  GPCL,  GPC, the Lender,  and Goodrich are parties to
the Credit  Agreement  dated August 16, 1995,  as amended by First  Amendment to
Credit Agreement dated as of December 15, 1995, and Letter Amendment dated March
26, 1996, and Second Amendment to Credit Agreement dated as of June 1, 1996, and
Letter  Amendment  dated  November  12,  1996,  and as further  amended by Third
Amendment  to Credit  Agreement  dated as of January  31,  1997,  and as further
amended by Fourth  Amendment to Credit  Agreement  dated as of June 1, 1997, (as
amended,  the "Agreement"),  pursuant to which the Lender has extended credit to
GPCL and  Goodrich  has  guaranteed  the  payment  and  performance  of  certain
indebtedness and other obligations of GPCL and GPC to the Lender; and

                  WHEREAS,  the  parties  hereto  desire  to amend the Agreement
as hereinafter set forth;

                  NOW,  THEREFORE,  in consideration of the mutual covenants and
agreements  contained in the Agreement and this  Amendment,  the parties  hereto
agree as follows:

                                    ARTICLE I

                         DEFINITIONS AND INTERPRETATION
                         ------------------------------

                  1.1 Terms  Defined  Above.  As used herein,  each of the terms
"Agreement,"  "Amendment,"  "Borrower," "GPC",  "GPCL," "Goodrich," and "Lender"
shall have the meaning assigned to such term hereinabove.

                  1.2 Terms  Defined in  Agreement.  As used  herein,  each term
defined  in the  Agreement  shall  have  the  meaning  assigned  thereto  in the
Agreement, unless expressly provided herein to the contrary.

                  1.3 References.  References  in this  Amendment to Article or
Section  numbers  shall be to Articles  and Sections of this  Amendment,  unless
expressly  stated to the  contrary.  References  in this  Amendment to "hereby,"
"herein," "hereinafter," "hereinabove," "hereinbelow," "hereof," and "hereunder"



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shall  be to this  Amendment  in its  entirety  and not  only to the  particular
Article or Section in which such reference appears.

                  1.4 Articles and Sections.  This  Amendment,  for  convenience
only, has been divided into Articles and Sections and it is understood  that the
rights,  powers,  privileges,  duties,  and other legal relations of the parties
hereto shall be determined from this Amendment as an entirety and without regard
to such  division  into  Articles and  Sections  and without  regard to headings
prefixed to such Articles and Sections.

                  1.5  Number  and  Gender.   Whenever  the  context   requires,
reference  herein made to the single  number shall be  understood to include the
plural and  likewise  the plural shall be  understood  to include the  singular.
Words  denoting sex shall be construed to include the masculine,  feminine,  and
neuter,  when such construction is appropriate,  and specific  enumeration shall
not exclude the general,  but shall be construed as  cumulative.  Definitions of
terms  defined in the  singular and plural  shall be equally  applicable  to the
plural or singular, as the case may be.


                                   ARTICLE II

                             AMENDMENTS TO AGREEMENT
                             -----------------------

                  The Agreement is hereby amended as follows:

                  2.1      Amendment of Section 1.2.   Section 1.2 of the 
                           ------------------------- 
Agreement is hereby amended as follows:
                     
                           The  following  definition  is  amended  to  read  as
follows:

                  "Applicable Margin" shall mean as to each Floating  
                  -------------------
                  Rate Loan,  zero percent (0%), and as to each LIBO 
                  Rate Loan, the following:

                     Borrowing Base                      LIBO Rate Loan
                      Utilization                       Applicable Margin
                    --------------                      -----------------
                  1)  greater than 75%                   two percent (2%)
                        of Borrowing Base

                  2)  less than or equal to 75%          one and three-fourths
                         and greater than 50% of           percent (1 3/4%)
                         Borrowing Base

                  3)  less than or equal to              one and one-half
                          50% of Borrowing Base            percent (1 1/2%)


                                       2




                           The Borrowing Base Utilization and the  corresponding
                  LIBO  Rate  shall  be set at each  quarter  end  for the  next
                  quarter.  Borrower  will furnish to Lender a Form of Borrowing
                  Base  Utilization,  which is  attached  as Exhibit VII to this
                  Amendment,  which shall  stipulate the Borrowing Base level at
                  the end of such  quarter.  Such  form  shall be  furnished  to
                  Lender within five (5) days of the end of such quarter."

                           "Borrowing Base Utilization" shall mean the aggregate
                           ---------------------------
                  principal   amount  of  Loans   outstanding   hereunder  as  a
                  percentage of the Borrowing Base."

                  2.2      Amendment of Section  2.7(a).  The first  sentence of
                           ----------------------------
 Section 2.7(a) of the Agreement is hereby amended to read as follows:

                  (a)  "Effective  October 16, 1997, the Borrowing Base shall be
                  $19,000,000 until the next Borrowing Base review.

                  2.3      Amendment  of Section  2.12.  Section  2.12 of the  
                           ---------------------------
Agreement is amended by amending the first sentence to read as follows:

                  "To compensate the Lender for maintaining funds available, the
                  Borrower  shall pay to the Lender a commitment  fee calculated
                  on the basis of a year of 365 or 366 days, as the case may be,
                  and actual days elapsed (including the first day but excluding
                  the last day),  on the average  daily amount of the  Available
                  Commitment as follows:

                   Borrowing Base                   
                    Utilization                        Commitment Fee
                   --------------                      --------------

                  1)  greater than 75%              one-half percent(1/2%)
                        of Borrowing Base

                  2)  less than or equal to         three-eighths percent(3/8%)
                         50% of Borrowing Base

         The Borrowing Base  Utilization  and the  corresponding  Commitment Fee
shall be set at each quarter end for the next quarter.



                                       3




                                   ARTICLE III

                                   CONDITIONS
                                   ----------

                  The  obligation  of the  Lender  to  amend  the  Agreement  as
provided  herein is  subject  to the  fulfillment  of the  following  conditions
precedent:

                  3.1 Receipt of  Documents  and Other  Items.  The Lender shall
                      ---------------------------------------
have received,  reviewed,  and approved the following documents and other items,
appropriately  executed when necessary and in form and substance satisfactory to
the Lender:

                  (a) multiple  counterparts  of this  Amendment  executed by 
         the Borrower and Goodrich, as requested by the Lender; and

                  (b) such  other  agreements,  documents,  items,  instruments,
         opinions,  certificates,  waivers,  consents and evidence as the Lender
         may reasonably request.

                  3.2 Accuracy  of   Representations   and   Warranties.   The
                      -------------------------------------------------
representations  and warranties  contained in Article IV of the Agreement and in
any other Loan  Document  shall be true and  correct,  except as affected by the
transactions contemplated in the Agreement and this Amendment.

                  3.3 Matters  Satisfactory  to  Lender.  All  matters  incident
                      ---------------------------------
to the consummation of the transactions contemplated hereby shall be 
satisfactory to the Lender.


                                   ARTICLE IV

                         REPRESENTATIONS AND WARRANTIES
                         ------------------------------

                  Each of the Borrower and Goodrich hereby  expressly  re-makes,
in favor of the Lender, all of the  representations  and warranties set forth in
Article IV of the Agreement and set forth in any other Loan Document to which it
is a party,  and  represents  and  warrants  that all such  representations  and
warranties  remain true and unbreached,  except as affected by the  transactions
contemplated in the Agreement and this Amendment.


                                    ARTICLE V

                                  RATIFICATION
                                  ------------

                  Each of the  parties  hereto does hereby  adopt,  ratify,  and
confirm the  Agreement and the other Loan  Documents to which it is a party,  in
all things in accordance  with the terms and provisions  thereof,  as amended by
this Amendment and the documents executed in connection herewith.



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                                   ARTICLE VI

                                  MISCELLANEOUS
                                  -------------

                  6.1 Scope  of  Amendment.  The  scope  of this  Amendment  is
expressly  limited to the matters  addressed herein and this Amendment shall not
operate as a waiver of any past, present, or future breach, Default, or Event of
Default under the Agreement, except to the extent, if any, that any such breach,
Default, or Event of Default is remedied by the effect of this Amendment.

                  6.2 Agreement as Amended.  All  references to the Agreement in
any  document   heretofore  or  hereafter   executed  in  connection   with  the
transactions  contemplated  in the  Agreement  shall be  deemed  to refer to the
Agreement as amended by this Amendment.

                  6.3 Parties in  Interest.  All  provisions  of this  Amendment
shall be  binding  upon and shall  inure to the  benefit  of the  Borrower,  the
Lender, Goodrich, and their respective successors and permitted assigns.

                  6.4 Rights of Third Parties. All provisions herein are imposed
solely  and  exclusively  for  the  benefit  of the  parties  hereto  and  their
respective successors and permitted assigns. No other Person shall have standing
to require  satisfaction  of such  provisions in accordance with their terms and
any or all of such  provisions  may be freely  waived in whole or in part by the
Lender at any time if in its sole discretion it deems it advisable to do so.

                  6.5 Entire  Agreement.  THIS AMENDMENT CONSTITUTES THE ENTIRE
AGREEMENT  AMONG THE  PARTIES  HERETO  WITH  RESPECT TO THE  SUBJECT  HEREOF AND
SUPERSEDES  ANY PRIOR  AGREEMENT,  WHETHER  WRITTEN OR ORAL,  AMONG SUCH PARTIES
REGARDING THE SUBJECT HEREOF.  FURTHERMORE IN THIS REGARD,  THIS AMENDMENT,  THE
AGREEMENT,  AND THE OTHER PARTIES LOAN DOCUMENTS  REPRESENT,  COLLECTIVELY,  THE
FINAL  AGREEMENT  AMONG  THE  PARTIES  THERETO  AND MAY NOT BE  CONTRADICTED  BY
EVIDENCE  OF  PRIOR,  CONTEMPORANEOUS  OR  SUBSEQUENT  ORAL  AGREEMENTS  OF SUCH
PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS AMONG SUCH PARTIES.

                  6.6 Governing  Law. THIS AMENDMENT AND ALL ISSUES  ARISING IN
CONNECTION HEREWITH AND THE TRANSACTIONS  CONTEMPLATED HEREBY SHALL BE CONSTRUED
IN ACCORDANCE WITH AND GOVERNED BY THE LAWS OF THE STATE OF TEXAS WITHOUT GIVING
EFFECT TO PRINCIPLES THEREOF RELATING TO CONFLICTS OF LAW.

                  6.7 Jurisdiction  and Venue.  ALL ACTIONS OR PROCEEDINGS WITH
RESPECT TO, ARISING  DIRECTLY OR INDIRECTLY IN CONNECTION  WITH, OUT OF, RELATED
TO OR FROM THIS  AMENDMENT,  THE  AGREEMENT,  OR ANY OTHER LOAN  DOCUMENT MAY BE
LITIGATED,  AT THE SOLE DISCRETION AND ELECTION OF THE LENDER,  IN COURTS HAVING
SITUS IN HOUSTON, HARRIS COUNTY, TEXAS. EACH OF THE BORROWER AND GOODRICH HEREBY
SUBMITS TO THE  JURISDICTION  OF ANY LOCAL,  STATE,  OR FEDERAL COURT LOCATED IN



                                       5




HOUSTON,  HARRIS  COUNTY,  TEXAS,  AND  HEREBY  WAIVES ANY RIGHTS IT MAY HAVE TO
TRANSFER OR CHANGE THE  JURISDICTION OR VENUE OF ANY LITIGATION  BROUGHT AGAINST
IT BY THE LENDER IN ACCORDANCE WITH THIS SECTION.

                  6.8 Waiver  of Rights to Jury  Trial.  EACH OF THE  BORROWER,
GOODRICH,   AND  THE  LENDER  HEREBY  KNOWINGLY,   VOLUNTARILY,   INTENTIONALLY,
IRREVOCABLY,  AND  UNCONDITIONALLY  WAIVES  ALL  RIGHTS  TO TRIAL BY JURY IN ANY
ACTION, SUIT, PROCEEDING,  COUNTERCLAIM,  OR OTHER LITIGATION THAT RELATES TO OR
ARISES OUT OF THIS AMENDMENT,  THE AGREEMENT,  OR ANY OTHER LOAN DOCUMENT OR THE
ACTS OR  OMISSIONS  OF THE  LENDER  IN THE  ENFORCEMENT  OF ANY OF THE  TERMS OR
PROVISIONS  OF THIS  AMENDMENT,  THE  AGREEMENT,  OR ANY OTHER LOAN  DOCUMENT OR
OTHERWISE  WITH RESPECT  THERETO.  THE PROVISIONS OF THIS SECTION ARE A MATERIAL
INDUCEMENT FOR THE LENDER ENTERING INTO THIS AMENDMENT.

                  IN WITNESS  WHEREOF,  this  Amendment  is  executed  effective
as of the date first  hereinabove written.

                                    BORROWER:

                                    GOODRICH PETROLEUM COMPANY OF LOUISIANA


                                    By: /s/ Walter G. Goodrich
                                        -------------------------------
                                           Walter G. Goodrich
                                           President

                                    GPC, INC. OF LOUISIANA


                                    By: /s/ Walter G. Goodrich
                                        -------------------------------
                                           Walter G. Goodrich
                                           President


                                       6






                                    GUARANTOR:

                                    GOODRICH PETROLEUM CORPORATION


                                    By: /s/ Walter G. Goodrich
                                        -------------------------------
                                           Walter G. Goodrich
                                           President



                                    LENDER:

                                    COMPASS BANK



                                    By: /s/ Allison Hammer
                                        -------------------------------
                                            Allison Hammer
                                            Vice-President




















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                                   EXHIBIT VII


                      [FORM OF BORROWING BASE UTILIZATION]


Compass Bank
24 Greenway Plaza, 14th Floor
Houston, Texas  77046
Attention:  Energy Lending

         Re:      Credit Agreement dated as of August 16, 1995, as
                  Amended by and between the parties as set forth in the
                  Fifth Amendment to Credit Agreement
                  -----------------------------------

Ladies and Gentlemen:

         Pursuant  to  applicable  requirements  of the  Credit  Agreement,  the
undersigned, as Responsible Officers of the Borrowers and the Guarantors, hereby
certify  to you the  following  information  as true and  correct as of the date
hereof or for the period indicated, as the case may be:

         To  the  best  knowledge  of  the   undersigned,   the  Borrowing  Base
Utilization  as described in the  definition  of the  Applicable  Margin for the
quarter ending  _________________,  19__, was as follows, and the LIBO Rate Loan
Applicable Margin for the following quarter is as follows:

                    Borrowing Base                          LIBO Rate
                  Utilization Margin                     Loan Applicable
                  ------------------                     ---------------

                  [1)  greater than 75%                  two percent (2%)
                           of Borrowing Base]

                  [2)  less than or equal to 75%         one and three-fourths
                           and greater than 50% of         percent (1 3/4%)
                           Borrowing Base]

                  [3)  less than or equal to             one and one-half
                           50% of Borrowing Base           percent (1 1/2%)]

         To  the  best  knowledge  of  the   undersigned,   the  Borrowing  Base
Utilization   as   described   in   Section   2.12   for  the   quarter   ending
_________________,  19__,  was as follows and the Commitment Fee as described in
Section 2.12 for the following quarter is as follows:
                                       I-i



                                       8




                    Borrowing Base
                    Utilization Margin                  Commitment Fee
                    ------------------                  --------------

                  [1)  greater than 50%              one-half percent (1/2%)
                           of Borrowing Base]

                  [2)  less than or equal to         three-eighths percent(3/8%)
                           50% of Borrowing Base]

         Each  capitalized  term  used but not  defined  herein  shall  have the
meaning assigned to such term in the Credit Agreement.

                                      GOODRICH PETROLEUM COMPANY OF LOUISIANA


                                      By: _____________________________________
                                      Printed Name: ___________________________
                                      Title: __________________________________


                                      GPC, INC. OF LOUISIANA


                                      By: _____________________________________
                                      Printed Name: ___________________________
                                      Title: __________________________________
















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