AMENDMENT TO
                            STOCK OPTION AGREEMENT(S)



         WHEREAS,  SEAGULL  ENERGY  CORPORATION  (the  "Company") has previously
adopted the SEAGULL  ENERGY  CORPORATION  1981 STOCK  OPTION  PLAN,  the SEAGULL
ENERGY  CORPORATION  1981 STOCK  OPTION  PLAN  (RESTATED),  the  SEAGULL  ENERGY
CORPORATION  1983 STOCK OPTION PLAN, the SEAGULL ENERGY  CORPORATION  1983 STOCK
OPTION PLAN (RESTATED),  the SEAGULL ENERGY  CORPORATION 1986 STOCK OPTION PLAN,
the SEAGULL ENERGY  CORPORATION 1986 STOCK OPTION PLAN  (RESTATED),  the SEAGULL
ENERGY  CORPORATION 1990 STOCK OPTION PLAN, the SEAGULL ENERGY  CORPORATION 1993
STOCK OPTION PLAN and the SEAGULL  ENERGY  CORPORATION  1995 OMNIBUS  STOCK PLAN
(collectively, the "Option Plans"); and

         WHEREAS, certain nonstatutory stock options and incentive stock options
(collectively,  "Options")  have  heretofore  been  granted to the  optionee,  a
full-time  active employee of the Company (the  "Employee"),  that are currently
outstanding  under the Option  Plans,  each of such Options  being listed on the
schedule attached hereto and evidenced by a Nonstatutory  Stock Option Agreement
or an Incentive Stock Option Agreement (collectively, the "Agreements"); and

         WHEREAS, the Employee's employment with the Company has been terminated
in connection with the consummation of the merger  contemplated by the Agreement
and  Plan  of  Merger  by and  among  Seagull  Energy  Corporation,  GNR  Merger
Corporation and Global Natural Resources Inc. dated as of July 22, 1996, and the
Company desires to amend the Agreements in certain respects;

         NOW, THEREFORE,  the Agreements shall be amended as follows,  effective
as of _______________ (Employee's employment termination date):

         1.       The  vesting schedule contained  in  the  Agreements  shall be
waived and all Options outstanding under such Agreements shall be exercisable in
full.

         2.       Notwithstanding  any  provision  in   the  Agreements  to  the
contrary, all Options shall  continue to be  exercisable  by the  Employee,  his
estate or the person  who  acquires   such  Options  by  will  or  the  laws  of
descent  and distribution,  at any time on or before  the  first  anniversary of
Employee's employment termination date.

         3.       As amended hereby, the  Agreements  are specifically  ratified
and reaffirmed.







         IN WITNESS  WHEREOF,  the Company has caused this  amendment to be duly
executed by one of its officers thereunto duly authorized,  and the Employee has
executed this amendment, effective as of ________________ (Employee's employment
termination date).

                                                      SEAGULL ENERGY CORPORATION



                                                      By _______________________




                                                      --------------------------
                                                      Employee