SEAGULL ENERGY CORP
8-K, 1997-09-18
NATURAL GAS TRANSMISISON & DISTRIBUTION
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                           Seagull Energy Corporation

                                                                              

                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D. C. 20549



                                    FORM 8-K


                                 CURRENT REPORT



                     Pursuant to section 13 or 15(d) of the
                         Securities Exchange Act of 1934



      Date of Report (Date of earliest event reported) September 11, 1997



                           Seagull Energy Corporation
              (Exact name of registrant as specified in its charter)

Texas                                 1-8094                    74-1764876
(State or other jurisdiction of   (Commission File            (I.R.S. Employer
incorporation or organization)        Number)                Identification No.)

               1001 Fannin, Suite 1700, Houston, Texas 77002-6714
               (Address of principal executive offices) (Zip code)

                                 (713) 951-4700
              (Registrant's telephone number, including area code)

      None (Former name, former address and former fiscal year, if changed
                               since last report)



<PAGE>



Item 5.    Other Events.

         On September 11, 1997, Seagull Energy Corporation,  a Texas corporation
("Seagull" or the  "Company"),entered  into a Share Sale Agreement with Rio Alto
Exploration Ltd. ("Rio Alto")  regarding the sale of Seagull's  Canadian oil and
gas  subsidiary,  Seagull Energy Canada Ltd.  ("Seagull  Canada").  The economic
effective  date for the  disposition  is July 1,  1997 (the  "Effective  Date").
Subject to receiving various regulatory  approvals,  Seagull and Rio Alto expect
to close the transaction no later than the fourth quarter of 1997.

         Based on current  exchange  rates and subject to final  purchase  price
adjustments,  which are expected to be minor and  positive,  Seagull  expects to
realize no less than U.S. $182 million.  Initially  Seagull will apply the sales
proceeds to repay existing  long-term debt,  including all of its Canadian debt.
Seagull expects to realize an after-tax gain of  approximately  $13 million,  or
approximately  21 cents per share,  in the quarter in which the  transaction  is
closed.

         The Company's  operations in Canada consist of oil and gas  exploration
and production  activities through interests in a small number of fields located
in Alberta,  Canada.  As of December 31, 1996, the Company's  holdings in Canada
totaled  42,682  thousand  barrels of oil  equivalents  representing  17% of the
Company's reserves.  

         Pro forma  financial  information  is included  in Exhibit  99.1 and is
incorporated herein by reference.  The pro forma financial  information includes
(i) unaudited pro forma  statements of operations  for the six months ended June
30,  1997 and the year  ended  December  31,  1996 as though the sale of Seagull
Canada occurred on January 1, 1996 and (ii) an unaudited pro forma balance sheet
as of June 30,  1997 as though the sale of Seagull  Canada  occurred on June 30,
1997.

         The  descriptions  of the agreement  pursuant to which Seagull sold its
Canadian oil and gas  operations  set forth above are  qualified by reference to
the Share  Sale  Agreement  which is filed as  Exhibit  2.1 and is  incorporated
herein by reference.

Forward Looking Statements

         This document includes forward looking statements within the meaning of
Section 27A of the  Securities  Act of 1933, as amended,  and Section 21E of the
Securities Exchange Act of 1934, as amended.  Although Seagull believes that its
expectations  are based upon  reasonable  assumptions,  it can give no assurance
that its goals will be  achieved.  Important  factors  that could  cause  actual
results  to differ  materially  from  those in the  forward  looking  statements
include the  resolution  of various  litigation  matters,  the  satisfaction  of
certain  closing  conditions  relating  to the  sale of the  Company's  Canadian
properties,  political  developments  in foreign  countries,  federal  and state
regulatory  developments,  the timing and extent of changes in commodity prices,
the timing and extent of success in

<PAGE>

discovering,  developing  and  producing or  acquiring  oil and gas reserves and
conditions of the capital and equity markets  during the periods  covered by the
forward looking statements.

Item 7.  Financial Statements and Exhibits

 (c)     Exhibits.

         2.1 Share  Sale  Agreement,  dated as of  September  11,  1997,  by and
between Seagull Energy Canada Holding Company, Seagll Energy Corporation and Rio
Alto Exploration Ltd.

         99.1 Unaudited pro forma condensed financial information


                                   SIGNATURES

         Pursuant to the  requirements  of the Securities  Exchange Act of 1934,
the  registrant  has duly  caused  this report to be signed on its behalf by the
undersigned thereunto duly authorized.

Date:    September 18, 1997

                                         SEAGULL ENERGY CORPORATION




                                         By:      /s/ William L. Transier
                                                  William L. Transier
                                                  Senior Vice President and 
                                                  Chief Financial Officer
                                                  (Principal Financial Officer)


<PAGE>





                                  Exhibit Index

<TABLE>
<CAPTION>

<S>            <C>                                                                                    <C>   
                                                                                                      Page
2.1            Share Sale  Agreement,  dated as of September  11, 1997,  by and between  Seagull
               Energy  Canada  Holding  Company,   Seagull  Energy   Corporation  and  Rio  Alto
               Exploration Ltd.

99.1           Unaudited pro forma condensed financial information



</TABLE>
  



                                   Exhibit 2.1





                              SHARE SALE AGREEMENT


                                     Between


                 SEAGULL ENERGY CANADA HOLDING COMPANY as Vendor


                                       and


                        745910 ALBERTA LTD. as Purchaser


                                       and

                           SEAGULL ENERGY CORPORATION

                                       and

                            RIO ALTO EXPLORATION LTD.




                           in respect of the shares of

                           SEAGULL ENERGY CANADA LTD.


                               September 11, 1997

<PAGE>
                                TABLE OF CONTENTS
                                    ARTICLE 1
                                 INTERPRETATION
<TABLE>


<S>               <C>                                                                                    <C>   

         1.1      Definitions                                                                             6
         1.2      Headings, meaning of "hereof", and Article and Schedule References                      15
         1.3      Single and Plural and Gender                                                            15
         1.4      Currency                                                                                15
         1.5      Knowledge                                                                               15
         1.6      Schedules                                                                               15
         1.7      Conflicts                                                                               16
         1.8      Statute References                                                                      16

                                                                           ARTICLE 2
                                                                       PURCHASE AND SALE

         2.1      Purchase and Sale Purchase Price                                                        16
         2.2      Purchase Price                                                                          16
         2.3      Deposit                                                                                 17
         2.4      Payment at Closing                                                                      18

                                                                           ARTICLE 3
                                                           REPRESENTATIONS, WARRANTIES AND COVENANTS

         3.1      Regarding the Vendor and Seagull Corporation                                            18
         3.2      Regarding the Corporation                                                               19
         3.3      Regarding the Assets                                                                    21
         3.4      Negation                                                                                23
         3.5      Purchaser's Representations, Warranties and Covenants                                   23

                                                                           ARTICLE 4
                                                                 TAX INDEMNITIES AND COVENANTS

         4.1      Tax Indemnities                                                                         24
         4.2      Withholding Tax                                                                         26
         4.3      Prior Period Tax Returns                                                                27

                                                                           ARTICLE 5
                                                                         INTERIM PERIOD

         5.1      Operations Generally                                                                    27
         5.2      Negative Covenants of the Corporation                                                   28
         5.3      Insurance                                                                               28
         5.4      Due Diligence                                                                           29
         5.5      Bank Debt                                                                               29
         5.6      Required Approvals                                                                      29
         5.7      CNQ Offer                                                                               29
         5.8      Discharges                                                                              29
</TABLE>

<PAGE>


                                TABLE OF CONTENTS
                                    ARTICLE 6
                                   CONDITIONS
<TABLE>

<S>               <C>                                                                                     <C>  

         6.1      Conditions for the Benefit of the Purchaser                                             29
         6.2      Conditions for the Benefit of the Vendor                                                31
         6.3      Efforts to Satisfy Conditions                                                           32
         6.4      Competition Act Approval                                                                32


                                                                           ARTICLE 7
                                                                            CLOSING

         7.1      Closing                                                                                 32
         7.2      Deliveries by the Vendor at Closing                                                     32
         7.3      Deliveries by the Purchaser at Closing                                                  33

                                                                           ARTICLE 8
                                                                    ENVIRONMENTAL INDEMNITY

         8.1      Indemnity                                                                               33

                                                                           ARTICLE 9
                                                                      GENERAL INDEMNITIES

         9.1      Vendor's Indemnity                                                                      33
         9.2      Purchaser's Indemnity                                                                   34
         9.3      Limitations on Vendor's Indemnity                                                       34
         9.4      Limitations on Purchaser's Indemnity                                                    34

                                                                          ARTICLE 10
                                                                           EMPLOYEES

         10.1     Offers of Employment                                                                    35
         10.2     Severance Obligations                                                                   35
         10.3     Retention Bonuses                                                                       35
         10.4     Recognition of Service                                                                  36

                                                                          ARTICLE 11
                                                                         ARBITRATION

         11.1     Arbitration                                                                             36

                                                                          ARTICLE 12
                                                                          GUARANTEES

         12.1     Seagull Corporation Guarantee                                                           37
         12.2     Rio Alto Guarantee                                                                      37



                                                                          ARTICLE 13
                                                                           SURVIVAL

         13.1     Survival                                                                                37
                                                                          ARTICLE 14
                                                                           GENERAL

         14.1     Further Assurances                                                                      37
         14.2     Time of the Essence                                                                     38
         14.3     Corporation                                                                             38
</TABLE>
<PAGE>


<TABLE>

<S>               <C>                                                                                     <C>
         14.4     Expenses                                                                                38
         14.5     Public Announcements                                                                    38
         14.6     Benefit of the Agreement                                                                38
         14.7     Entire Agreement                                                                        38
         14.8     Amendments and Waiver                                                                   38
         14.9     Assignment                                                                              39
         14.10    Notices                                                                                 39
         14.11    Change of Corporation's Name                                                            39
         14.12    Governing Law                                                                           40
         14.13    No Duplication of Adjustments                                                           40
         14.14    Attornment                                                                              40
         14.15    Counterpart Execution                                                                   40

</TABLE>

<PAGE>

                              SHARE SALE AGREEMENT


         THIS AGREEMENT made this 11th day of September, 1997;


B E T W E E N:


         SEAGULL ENERGY CANADA HOLDING  COMPANY,  a body corporate  incorporated
under the laws of the State of Wyoming (hereinafter referred to as the "Vendor")

         OF THE FIRST PART

                                     - and -

         745910  ALBERTA LTD., a body corporate  incorporated  under the laws of
the Province of Alberta (hereinafter referred to as the "Purchaser")

         OF THE SECOND PART

                                     - and -

         SEAGULL ENERGY  CORPORATION,  a body corporate  incorporated  under the
laws of the State of Texas (hereinafter referred to as "Seagull Corporation")

         OF THE THIRD PART
                                     - and -

         RIO ALTO EXPLORATION LTD., a body corporate incorporated under the laws
of the laws of the Province of Alberta (hereinafter referred to as "Rio Alto")

         OF THE FOURTH PART

         WHEREAS  the  Vendor  is the  registered  and  beneficial  owner of the
Shares;

         AND WHEREAS the Purchaser is a wholly owned  subsidiary of Rio Alto and
Rio Alto has agreed to guarantee the  obligations of the Vendor  hereunder;  AND
WHEREAS the Vendor desires to sell the Shares to the Purchaser and the Purchaser
desires to  purchase  the Shares  upon and  subject to the terms and  conditions
hereinafter set forth;

         AND  WHEREAS  the  Vendor  is a  wholly  owned  subsidiary  of  Seagull
Corporation  and Seagull  Corporation has agreed to guarantee the obligations of
the Vendor hereunder;


         NOW THEREFORE THIS AGREEMENT  WITNESSES  that in  consideration  of the
premises and the covenants and  agreements  herein  contained the parties hereto
agree as follows:


                                    ARTICLE 1
                                 INTERPRETATION

1.1      Definitions

         In this Agreement,  unless  otherwise  stated or the context  otherwise
requires:

         (a)  "Affiliate"  has the same meaning as in the Business  Corporations
Act (Alberta);

         (b) "Agreement" means this share sale agreement and all amendments that
may be made hereto by written agreement between the Vendor and the
                  Purchaser;

         (c)  "Applicable  Law" means,  in  relation to any Person,  property or
circumstance:

               (i)  common  law,  equity  and  statutes  (including  regulations
          enacted thereunder);

               (ii) judgments and orders of courts of competent jurisdiction;

               (iii) regulations and orders issued by governmental agencies and
authorities; and

         (iv) the terms and conditions of permits,  licenses,  authorizations or
approvals issued by governmental agencies or authorities;

         which are applicable to such Person, property or circumstance;

         (d)  "Assets"   mean  any  and  all  assets,   properties   and  rights
beneficially owned by the Corporation,  whether vested or contingent,  including
the Oil and Gas Assets and working capital;

         (e) "Bank Debt" means all  indebtedness of the Corporation  pursuant to
the Existing Credit Facilities;

         (f) "Bank Debt Adjustment" means:

               (i) the  outstanding  amount  of the Bank  Debt at the  Effective
          Date; plus

               (ii) the amount booked by the Corporation in accordance with GAAP
          as  interest  in respect of the Bank Debt for the period  between  the
          Effective Date and the Closing Date; minus

               (iii) the amount  advanced  by the Vendor to the  Corporation  to
          repay the Bank Debt pursuant to Section 5.5;

         (g)  "Base Price" has the meaning indicated in paragraph 2.2(a)(i);

         (h)  "Business  Day"  means a day  other  than a  Saturday,  Sunday  or
statutory holiday in Calgary, Alberta or Houston, Texas;

         (i) "Canadian Tax Act" means the Income Tax Act R.S.C.  1985, c. 1 (5th
Supplement) as amended;

         (j) "Claim" means any claim, demand, lawsuit,  proceeding,  arbitration
or governmental investigation;

         (k) "Closing"  means the closing of the sale of the Shares and the Note
by the Vendor to the Purchaser pursuant hereto;

         (l) "Closing Date" means:

               (i) if the  Appropriate  Withholding  Tax Certificate is received
          prior to October 1, 1997,  the fourth day following the "Closing Date"
          as  defined  in the CNQ  Offer,  provided  that  if such  day is not a
          Business  Day,  the  Closing  Date  shall  be the  next  Business  Day
          thereafter; and

               (ii) if the Appropriate  Withholding Tax Certificate has not been
          received  prior to October 1, 1997,  the later of October 1, 1997, and
          the date  determined in  accordance  with  paragraph  (i)  immediately
          above;  provided  that,  for purposes of the  foregoing,  "Appropriate
          Withholding  Tax  Certificate"  means a  Certificate  (as  defined  in
          subsection  4.2(a))  which  has a  Certificate  Limit (as  defined  in
          subsection  4.2(a)) which is not less than the portion of the Purchase
          Price which is allocated to the Shares in accordance  with  subsection
          2.2 (c);

         (m) "CNQ"  means  Canadian  Natural  Resources,  a general  partnership
formed pursuant to the laws of Alberta;

         (n) "CNQ Offer"  means (i) the offer to purchase  dated  September  11,
1997 made by CNQ to the  Corporation  whereby CNQ has offered to acquire certain
of the Assets from the Corporation in exchange for Class A Units of CNQ (ii) the
Offer  Acceptance  Agreement  dated the date hereof  among the  Vendor,  Seagull
Corporation,  Seagull Canada,  CNQ and Canadian  Natural  Resources  Limited and
(iii) all amendments thereof and documents and agreements related thereto;
         (o) "Competition Act Approval" means that:

               (i) the Director of  Investigation  of Research (the  "Director")
          appointed  under the  Competition  Act  (Canada)  shall have issued an
          advance ruling certificate  pursuant to Section 102 of the Competition
          Act  (Canada)  in respect of the  transaction  contemplated  hereby on
          terms and conditions satisfactory to the Parties acting reasonably; or


                                       
<PAGE>

               (ii) the  applicable  waiting  period  under  Section  123 of the
          Competition  Act  (Canada)  shall have  expired  without the  Director
          having advised the Parties that he intends to apply to the Competition
          Tribunal  for  an  order  under  Section  92 or  Section  100  of  the
          Competition Act (Canada) in respect of the transaction contemplated by
          this Agreement; or

               (iii) the Director  shall have advised the Purchaser that it does
          not intend at the current  time to apply to the  Competition  Tribunal
          for an order  under  Section 92 of the  Competition  Act  (Canada)  in
          respect of the transaction contemplated by this Agreement;

         (p)  "Confidentiality  Agreement" means the  Confidentiality  Agreement
dated August 5, 1997 between Nesbitt Burns Inc. (as agent for the  Corporation),
and the Purchaser and the  Non-Compete  Agreement  dated August 14, 1997 between
the Corporation and the Purchaser;

         (q)  "Corporation"  means Seagull  Energy Canada Ltd., a body corporate
incorporated pursuant to the laws of Alberta;

         (r) "Deposit"  and "Deposit  Interest"  have the meanings  specified in
Section 2.3;

         (s) "Effective Date" means July 1, 1997;

         (t) "Employee" means any of the Corporation's current employees;

         (u)  "Employee  Plan"  means any  employee  benefit  plan,  program  or
arrangement  sponsored,  maintained  or  contributed  to by  the  Vendor  or the
Corporation or their Affiliates for the benefit of the Corporation's  employees,
including, without limitation, bonus; pension; savings; profit sharing; deferred
compensation;   supplemental  retirement  income;  stock  option  and  hospital,
medical,  dental,  disability,  automobile,  life and accident  issuance  plans,
excluding  the  Employee   Retention   Agreements  and  the  Employee  Severance
Agreements;

         (v) "Employee Retention Bonuses" means the retention bonuses payable to
the Employees pursuant to the Employee Retention Agreements;

         (w) "Employee  Retention  Agreements" means the letter agreements dated
June 12, 1997 between the  Corporation  and each Employee  pursuant to which the
Corporation has agreed to pay a retention  bonus, in certain  circumstances,  to
each Employee;

         (x) "Employee  Severance Payment" means a Severance Payment, as defined
in an Employee Severance Agreement;

         (y) "Employee  Severance  Agreement" means the letter  agreements dated
June 12, 1997  between the  Corporation  and each of its  employees  pursuant to
which  the  Corporation  has  agreed  to pay a  severance  payment,  in  certain
circumstances, to each Employee;

         (z)  "Encumbrance"  means a Security  Interest,  an  option,  a farmout
agreement  under which earning has not occurred,  a royalty,  a right of a third
party to reduce or alter an interest of the  Corporation  on the  occurrence  of
payout or in other circumstances, a penalty or forfeiture arising as a result of
an election by the  Corporation or any of its  predecessors in interest prior to
or after the date hereof not to participate in a drilling or other operation and
any other adverse claim or other encumbrance in favour of a third party to which
the Corporation's interest in an Asset is subject;

         (aa)  "Engineering  Report"  means  the  report of  Sproule  Associates
Limited in respect of certain oil and gas properties of the Corporation which is
dated July 14, 1997 and is comprised of 8 volumes;

         (bb)     "Environmental Damage" means:

               (i) contamination,  pollution or other damage to the environment;
          or

               (ii) damage caused by the presence, release, spill or emission of
          any  substance  (including  any form of  energy),  including,  without
          limitation, corrosion or deterioration of structures or other property
          and death or  injury  to human  beings,  plants  or  animals;  and for
          purposes  hereof,  the environment  includes air, soil,  ground water,
          surface water, aquifers and plant and animal life;

         (cc)  "Environmental  and Reclamation  Liabilities"  means  liabilities
(whether  under  Applicable  Law, by contract or  otherwise)  to (i) pay amounts
(including  compensation for damages) on account of Environmental  Damage,  (ii)
cleanup,  remediate or prevent Environmental Damage or Environmental Problems or
(iii) abandon any well, remove any equipment or structure or reclaim the surface
site thereof;

         (dd) "Existing Credit Facilities" means (i) the Cdn.  $5,000,000 Credit
Facility  dated  October 24, 1994 between the  Corporation  and the Bank of Nova
Scotia  and (ii) the U.S.  $100,000,000  Credit  Facility  dated  June 17,  1997
between  the  Corporation,  a group of Banks  and the  Chase  Manhattan  Bank of
Canada, as Administrative Agent;

         (ee) "Financial Statements" means:

               (i) the audited  financial  statements of the Corporation for the
          12 month period ended December 31, 1996; and

               (ii) the audited interim financial  statements of the Corporation
          for the six months ended June 30, 1997;  which are attached  hereto as
          Schedule A;

         (ff)  "First  Conditions  Satisfaction  Time"  means the time at which,
pursuant to the terms of the CNQ Offer,  the closing of the sale to CNQ pursuant
thereto is scheduled to close;

         (gg) "GAAP" means  generally  accepted  accounting  principles  used in
Canada from time to time;

         (hh) "Gas and Oil Sales  Contracts"  means  contracts  for the sale and
purchase of Petroleum Substances;

         (ii) "Interim Period" means the period from the date hereof to the Time
of Closing;

         (jj)  "Komex  Report"  means  the  report of Komex  International  Ltd.
respecting environmental matters related to certain of the Corporation's Oil and
Gas Assets dated August, 1997;

         (kk) "Lands"  means the lands  described in Schedule E, subject to such
limitations as to geological formations and substances as may appear in Schedule
E;

         (ll)  "Leases"  means the  petroleum and natural gas leases and similar
instruments  listed in  Schedule  E by virtue of which  the  holder  thereof  is
entitled to drill for, and produce,  save and market  Petroleum  Substances from
the Lands;

         (mm)  "Losses"  means,  in  respect of a Party and in  relation  to any
matter, all losses, costs and damages which such Party suffers,  sustains,  pays
or incurs in connection with such matter or circumstance and includes reasonable
costs of legal counsel (on a full  indemnity  basis) and other  consultants  and
reasonable costs of investigating and defending Claims arising from such matter,
regardless  of whether  such Claims are  sustained  but does not include loss of
future profits;

         (nn) "Material Adverse Effect" means, with respect to any matter, that:

               (i) such  matter has  resulted  in or is  reasonably  expected to
          result in:

                    (A) payments by the Corporation;

                    (B) Losses to the Corporation; or

                    (C) a  reduction  in the value of the Assets;  which,  after
               taking into account the effect on the Corporation's Taxes of such
               payment,  Losses or  reduction  in value and the  proceeds of any
               insurance  available to the Corporation in respect thereof, is in
               excess of $25,000,000.00; or

                    (ii) has or is reasonably expected to have a material effect
               on the transactions contemplated by this Agreement;

         (oo)  "Miscellaneous  Interests" means all of the Corporation's  right,
title, estate and interest in and to all property,  assets and rights associated
with the  Petroleum  and  Natural  Gas Rights or the  Tangibles  (other than the
Petroleum and Natural Gas Rights and the Tangibles  themselves)  including,  but
not in limitation of the generality of the foregoing, the entire interest of the
Corporation in:

                    (i) the Title and Operating Documents;

                    (ii) all subsisting rights to enter upon, use and occupy the
               surface of any of the Lands,  any lands with which the Lands have
               been pooled or unitized or any lands on which the  Tangibles  are
               located;

                    (iii) all wells used or useful for the purpose of production
               of  Petroleum  Substances  from the Lands or lands with which the
               Lands have been pooled or  unitized,  including  water  injection
               wells; and

                    (iv) all land, technical, operating, production, geological,
               geophysical,  seismic,  engineering,   reservoir,  marketing  and
               production  data  and  information  related  to the  Oil  and Gas
               Assets;

         (pp) "Note" means a non-interest bearing, demand promissory note issued
by the  Corporation  to the Vendor in respect of loans made by the Vendor to the
Corporation during the Interim Period to repay the Bank Debt pursuant to Section
5.5;

         (qq) "Office Leases" means the  Corporation's  real property leases for
its Calgary, Brooks and Edson, Alberta offices, which are listed in Schedule H;

         (rr) "Oil and Gas Assets"  means the  Petroleum and Natural Gas Rights,
the Tangibles and the Miscellaneous Interests;

         (ss) "Parties" means the Vendor,  Seagull Corporation and the Purchaser
and their respective successors and permitted assigns hereunder and
                  "Party" means one of them;

         (tt) "Permitted Encumbrances" means:

                    (i) liens for taxes,  assessments  or  governmental  charges
               which are not due or delinquent or the validity of which is being
               diligently   contested  in  good  faith  by  the  Vendor  or  the
               Corporation;

                    (ii) liens  incurred  or created in the  ordinary  course of
               business  as  security  in  favour  of any  other  Person  who is
               conducting the  development or operation of the property to which
               such liens  relate for the  Corporation's  share of the costs and
               expenses of such  development  or operation  which are not due or
               delinquent;

                    (iii)  mechanics',   builders'  or  materialmen's  liens  in
               respect of services  rendered or goods supplied for which payment
               is not due;

                    (iv) easements,  rights of way,  servitudes or other similar
               rights in land (including,  without limitation, rights of way and
               servitudes for railways;  sewers;  drains; gas and oil pipelines;
               gas and  water  mains;  and  electric  light,  power,  telephone,
               telegraph  and  cable  television  conduits,   poles,  wires  and
               cables);

                    (v) the right reserved to or vested in any  municipality  or
               governmental or other public authority by the terms of any lease,
               licence,   franchise,   grant  or  permit  or  by  any  statutory
               provision, to terminate any such lease, license, franchise, grant
               or permit or to require  annual or other  periodic  payments as a
               condition of the continuance thereof;

                    (vi)  governmental   requirements  of  general  application,
               including,  without limitation, those respecting production rates
               or other operational matters;

                    (vii) the Encumbrances described in Schedule E;

                    (viii)   the   reservations,   limitations,   provisos   and
               conditions  in any  original  grants from the Crown of any of the
               Lands or interests therein and statutory exceptions to title;

                    (ix) the terms  and  conditions  of the Title and  Operating
               Documents; and

                    (x) the  terms and  conditions  of the CNQ  Offer,  if it is
               accepted;

         (uu)  "Person"  means  any  individual,  body  corporate,   partnership
(limited or general), trust, trustee, executor or similar official, governmental
agency or authority or other entity;

         (vv)  "Petroleum and Natural Gas Rights" means the undivided  interests
attributed to the Corporation in Schedule E in:

                    (i)  rights   (whether  fee  simple   interests,   leasehold
               interests or other interests) to drill for and produce,  save and
               market Petroleum Substances from the Lands;

                    (ii) royalties,  net profits interests and similar interests
               entitling  the  holder  thereof  to  a  share  of  the  Petroleum
               Substances  produced from the Lands or to a payment calculated by
               reference to the quantity of such  production,  the proceeds from
               the sale thereof or the profits therefrom; and

                    (iii) rights to acquire the foregoing;

         (ww) "Petroleum  Substances"  means petroleum,  natural gas and related
hydrocarbons (except coal) and all other substances (including sulphur and
                  sulphur compounds) produced in association therewith;

         (xx) "Place of Closing"  means the  offices of Bennett  Jones  Verchere
located at 4500, 855 - 2nd Street S.W.,Calgary, Alberta;

         (yy) "Prime Rate" means the annual rate of interest announced from time
to time by the Bank of Nova  Scotia  as a  reference  rate  then in  effect  for
determining interest rates on Canadian dollar commercial loans in Canada;

         (zz)  "Prior  Period  Taxes"  means all Taxes  paid or  payable  by the
Corporation  pursuant to the Canadian Tax Act and the income tax  legislation of
the  Provinces  of Canada  for  periods  ending on or before the Time of Closing
(including  the taxation  year which,  pursuant to the Canadian Tax Act, will be
deemed  to  have  ended  as a  result  of  the  acquisition  of  control  of the
Corporation  which  results  from  the  sale  of the  Shares  pursuant  hereto),
including  any  obligation  to  withhold  or remit  Taxes on behalf of any other
Person,  provided  that  Taxes  shall be  determined  without  reference  to any
amendments to any of such legislation announced after the Time of Closing;

         (aaa)  "Purchase  Price"  means  the  purchase  price  payable  by  the
Purchaser to the Vendor for the Shares and the Note  pursuant  hereto as set out
in
                  Section 2.2;

         (bbb) "Required  Approvals"  means the  Competition  Act Approval,  the
Seagull  Corporation Bank Consent and all other approvals and  authorizations of
the sale of the Shares and the Note  pursuant  hereto  required  to be  obtained
pursuant to Applicable Law which, if not obtained,  will have a Material Adverse
Effect;

         (ccc)  "Seagull  Corporation  Bank  Consent"  means the  consent to the
transactions  contemplated  by this  Agreement and the CNQ Offer  required to be
obtained pursuant to the Seagull Corporation Credit Facility;

         (ddd)  "Seagull   Corporation  Credit  Facility"  means  (i)  the  U.S.
$450,000,000.00 credit facility dated June 17, 1997 between Seagull Corporation,
a group of banks and the Chase Manhattan Bank, as Administrative  Agent and (ii)
the Existing Credit Facilities;

         (eee) "Security Interest" means any pledge,  lien, charge,  conditional
sale, title retention agreement, mortgage, assignment by way of security or
                  other security interest;

         (fff)  "Shares"  means all of the  issued  and  outstanding  common and
preferred shares of the Corporation;

         (ggg) "Take or Pay  Obligations"  means  obligations of the Corporation
under or in  respect  of  contracts  for the  sale of  production  of  Petroleum
Substances  arising  as a result of  payments  made by or on behalf of the buyer
thereunder  in advance  of taking  delivery  of  Petroleum  Substances  pursuant
thereto or payments  made by or on behalf of the buyer  thereunder in lieu of or
as  compensation  for the buyer not taking  deliveries  of Petroleum  Substances
pursuant thereto;

         (hhh) "Tangibles" means all of the Corporation's  right,  title, estate
and  interest in and to all  equipment  and  facilities  used or held for use in
respect  of  the  production,  gathering,  dehydration,  processing,  treatment,
measurement, storage or transportation of Petroleum Substances from the Lands or
lands pooled or unitized therewith,  including,  without limitation,  wellheads,
pumps,  pumpjacks,  dehydrators,   separators,  meters,  generators,  flowlines,
gathering lines, batteries, tanks, pipelines, compressors and plants;

         (iii) "Tax  Indemnity"  means the  indemnity by the Vendor in favour of
the  Corporation and the Purchaser in respect of Prior Period Taxes provided for
in subsection 4.1(a);

         (jjj) "Tax Pools" consists of cumulative  Canadian oil and gas property
expense ("COGPE"),  cumulative Canadian development expense ("CDE"),  cumulative
Canadian exploration expense ("CEE") and undepreciated  capital cost ("UCC"), in
each case, as defined in the Canadian Tax Act;

         (kkk)  "Tax  Returns"  includes  all  returns,  reports,   declaration,
elections,  filings,  information returns and statements required to be filed by
the corporation in respect of Taxes;

         (lll) "Taxes" means all taxes,  duties,  fees,  premiums,  assessments,
levies and other charges of any kind  whatsoever  imposed by any taxing or other
governmental  authority or agency,  together  with all interest and penalties in
respect  thereof,  but does not include  royalties and similar  payments payable
pursuant to or in respect of the Leases;

         (mmm) "Time of  Closing"  means 10:30 a.m.  local  Calgary  time on the
Closing Date;

         (nnn)  "Title and  Operating  Documents"  means (i) the Leases (ii) all
agreements  relating to the  ownership  or  operation  of the Oil and Gas Assets
entered into in the normal course of business,  including,  without  limitation,
operating procedures; unit agreements and unit operating agreements;  agreements
for the  construction,  ownership  and operation of gas plants,  pipelines,  gas
gathering  systems  and  similar   facilities;   pooling   agreements,   royalty
agreements, farmin agreements,  farmout agreements and participation agreements;
agreements  respecting the gathering,  measurement,  processing,  compression or
transportation  of  Petroleum  Substances;  Gas and Oil  Sales  Contracts;  well
operating contracts; and surface leases, pipeline easements, road use agreements
and other  contracts  granting the right to use the surface of lands;  and (iii)
all  permits,   licenses  and  approvals   issued  or  granted  by  governmental
authorities  pertaining to the ownership or operation of the Oil and Gas Assets;
and

         (ooo) "Title Opinion" means the title opinions in respect of certain of
the  Petroleum  and Natural Gas Rights  dated July 28, 1997  delivered by Howard
Mackie to the Corporation.



1.2 Headings, meaning of "hereof", and Article and Schedule References

         The headings of Articles,  Sections,  and subsections in this Agreement
are for  convenience of reference only and shall not affect the  construction or
interpretation  of  this  Agreement.  The  terms  "this  Agreement",   "hereof",
"hereunder" and similar  expressions refer to this Agreement in its entirety and
include any  agreement  supplemental  hereto.  Unless  something  in the subject
matter or context is  inconsistent  therewith,  references  herein to  Articles,
Sections,  subsections and paragraphs are to Articles, Sections, subsections and
paragraphs of this Agreement and  references  herein to Schedules are references
to Schedules to this Agreement.

1.3      Single and Plural and Gender

         In this  Agreement  words  importing  the  singular  number  only shall
include the plural and vice versa and words  importing  one gender shall include
the other genders.

1.4      Currency

         Unless specifically otherwise stated, all references to currency herein
are to lawful money of Canada.

1.5      Knowledge

         In this  Agreement,  references to the Vendor's  knowledge or awareness
and similar  references mean the actual  knowledge of the officers and employees
of  the  Vendor,   Seagull   Corporation  and  the  Corporation   whose  primary
responsibilities  relate to the matter in question after a reasonable  review of
the Corporation's files and records, but without any further inquiry.

1.6      Schedules

         The following are the Schedules to this Agreement:

          Schedule                                   Title

         Schedule A                 -       Financial Statements
         Schedule B                 -       Form of Officer's Certificate
         Schedule C                 -       Claims
         Schedule D                 -       Oil and Gas Sales Contracts
         Schedule E                 -       Lands
         Schedule F                 -       Bank Accounts
         Schedule G                 -       Employee Plans
         Schedule H                 -       Office Leases
         Schedule I                 -       List of Employee Severance Payments

         Schedule E is  contained  in binders  labeled  "Schedule E to the Share
Sale Agreement dated  September 11 among Seagull Energy Canada Holding  Company,
745910 Alberta Ltd. and Seagull Energy Corporation - Land Schedule".  Schedule G
is contained in a binder labeled  "Schedule G to the Share Sale Agreement  dated
September 11, 1997 among Seagull Energy Canada Holding  Company,  745910 Alberta
Ltd. and Seagull Energy Corporation - Employee Plans". The labels on Schedules E
and G have been  initialed by the Parties.  The  remainder of the  Schedules are
attached hereto. The Schedules form part of this Agreement.


1.7      Conflicts

         Where any provision of any Schedule to this  Agreement  conflicts or is
at variance with any provision in the body of this  Agreement,  the latter shall
prevail.

1.8      Statute References

         A reference in this  Agreement to a statute shall be a reference to the
statute and the regulations made pursuant thereto as amended or superseded, from
time to time, either before or after the date hereof, unless otherwise stated or
the context otherwise requires.


                                    ARTICLE 2
                                PURCHASE AND SALE

2.1      Purchase and Sale Purchase Price

         The Vendor shall sell to the Purchaser and the Purchaser shall purchase
from the Vendor all of the Shares and the Note, in  accordance  with and subject
to the terms and conditions of this  Agreement.  Ownership of the Shares and the
Note will pass to the Purchaser at the Time of Closing.

2.2      Purchase Price

         (a) If the Bank Debt  Adjustment  is a positive  amount,  the  Purchase
Price shall be:

                    (i) Two Hundred  Fifty One  Million  Five  Hundred  Thousand
               Dollars $251,500,000.00 (the "Base Price"); minus

                    (ii) the Bank Debt Adjustment; plus

                    (iii)  simple  interest  at the Prime Rate on the Base Price
               from the Effective Date to the Closing Date.

         (b) If the Bank Debt  Adjustment  is a negative  amount,  the  Purchase
Price shall be:

                    (i) the Base Price; plus

                    (ii) an  amount  equal to the  amount by which the Bank Debt
               Adjustment is less than zero; plus

                    (iii)  simple  interest  at the Prime Rate on the Base Price
               from the Effective Date to the Closing Date.

         (c) The Parties agree that the portions of the Purchase Price which are
payable for the Shares and the Note, respectively, are:

                    (i) the Note - the principal amount thereof; and

                    (ii) the  Shares - the  balance  of the  Purchase  Price 2.3
               Deposit

         (a) At the  time of  execution  and  delivery  of this  Agreement,  the
Purchaser  shall pay Twelve Million Five Hundred  Seventy Five Thousand  Dollars
($12,575,000.00)  (herein  called  the  "Deposit")  to Bennett  Jones  Verchere,
Barristers and Solicitors (the "Escrow  Agent"),  to be held by the Escrow Agent
in an  interest-bearing  solicitor's  trust  account to be applied in accordance
with the following terms:

                    (i)  if  Closing  occurs,  the  Deposit  together  with  the
               interest  actually  earned thereon while held by the Escrow Agent
               (the "Deposit Interest") shall be paid by the Escrow Agent to the
               Vendor at the Time of  Closing  in  partial  satisfaction  of the
               Purchaser's obligation to pay the Purchase Price;

                    (ii) if  Closing  does not  occur  due to a  breach  of this
               Agreement by the  Purchaser,  the Vendor shall be entitled to the
               Deposit and Deposit Interest,  and the Escrow Agent shall pay the
               Deposit  and  Deposit  Interest  to the  Vendor on the  scheduled
               Closing Date. The Deposit and Deposit Interest shall thereupon be
               forfeited to the Vendor on account of the damages suffered by the
               Vendor as a  consequence  of such breach.  The Parties agree that
               such amount constitutes their genuine pre-estimate of the minimum
               damages  which will be  suffered  by the Vendor by virtue of such
               breach.  The  forfeiture  of the Deposit and Deposit  Interest as
               provided herein shall not limit the rights and remedies available
               to the  Vendor  as a  result  a breach  by the  Purchaser  of its
               obligations  hereunder and the Vendor shall be entitled to pursue
               such rights and remedies,  notwithstanding  the forfeiture of the
               Deposit  and  the  Deposit  Interest  to  the  Vendor,  including
               recovering  the Losses in excess of the  Deposit  and the Deposit
               Interest suffered by the Vendor due to a breach of this Agreement
               by the Purchaser; and

                    (iii)  if   Closing   does  not  occur  for  any  reason  or
               circumstance  other than that described in paragraph  2.3(a)(ii),
               the  Purchaser  shall be  entitled  to the  Deposit  and  Deposit
               Interest and the Escrow Agent shall on the scheduled Closing Date
               pay the Deposit and Deposit Interest to the Purchaser.

                    The Purchaser  acknowledges that Bennett Jones Verchere acts
               as legal counsel to the Vendor in connection with this Agreement.
               The  Purchaser  agrees that  notwithstanding  that Bennett  Jones
               Verchere is the Escrow  Agent,  Bennett Jones  Verchere  shall be
               entitled to continue to act on behalf of the Vendor in respect of
               any matter arising in relation to this  Agreement,  including any
               dispute  regarding  the  disposition  of the  Deposit  or Deposit
               Interest.

         (b) If the Escrow  Agent is  notified  by either  Party,  or  otherwise
becomes aware that there is a dispute between the Parties regarding  entitlement
to all or part of the Deposit and Deposit Interest, the Escrow Agent may, in its
sole discretion, interplead the matter and thereupon pay the Deposit and Deposit
Interest  (or  that  portion  thereof  as to  which  there  is a  dispute  as to
entitlement) into the court of law in which the matter has been interpleaded.


2.4      Payment at Closing

         The Purchase Price shall be paid to the Vendor at Closing as follows:

         (a) the Deposit plus the Deposit  Interest  shall be paid to the Vendor
at Closing by the Escrow Agent in accordance with Section 2.3; and

         (b) the  Purchaser  shall  pay to the  Vendor  an  amount  equal to the
Purchase  Price less the Deposit and the Deposit  Interest by wire  transferring
such amount to a bank account at a branch in Canada of a Canadian chartered bank
specified  by the  Vendor by a  written  notice  to the  Purchaser  prior to the
Closing Date.

Not later than two (2) days prior to the Closing Date,  the Vendor shall deliver
a statement  setting forth an itemized  calculation of the amounts to be paid to
the Purchaser by the Vendor and the Escrow Agent at Closing in  accordance  with
this Section 2.4.


                                    ARTICLE 3
                    REPRESENTATIONS, WARRANTIES AND COVENANTS

3.1      Regarding the Vendor and Seagull Corporation

         The  Vendor  and  Seagull  Corporation  represent  and  warrant  to the
Purchaser that:

         (a)  Incorporation:  the  Vendor is duly  incorporated,  organized  and
subsisting   under  the  laws  of  Wyoming  and  Seagull   Corporation  is  duly
incorporated, organized and subsisting under the laws of Texas;

         (b)  Corporate  Authority:  the Vendor  and  Seagull  Corporation  have
corporate  power and  authority  to enter into and deliver  this  Agreement  and
transfer beneficial ownership of the Shares to the Purchaser pursuant hereto;

         (c) Title to the Shares:  the Vendor is the  registered  and beneficial
owner of the  Shares and at the Time of  Closing  will have good and  marketable
title to the Note, in each case, free and clear of all Encumbrances and there is
no contract,  option or any other right  binding upon the Vendor or which at any
time in the future may become binding upon the Vendor to sell, transfer, assign,
pledge,  charge,  mortgage or in any other way dispose of or encumber any of the
Shares or the Note other than pursuant to this Agreement;

         (d) Due Authorization  and no Violations:  provided the Competition Act
Approval is  obtained,  the  execution  and delivery of this  Agreement  and the
completion of the transactions  contemplated hereby have been duly authorized by
all necessary corporate action on the part of the Vendor and Seagull Corporation
and do not and will not:

                    (i) violate or result in a breach or default of, require any
               consent  under,  be in conflict  with,  accelerate  or permit the
               acceleration  of  the  performance  of,  result  in the  loss  or
               termination  of or give a third  party a right to  terminate  any
               material   agreement,   licence,   permit,   franchise  or  other
               instrument  to  which  the  Vendor,  Seagull  Corporation  or the
               Corporation  is a party or of which any of them is bound or which
               relate to any of the Assets;

                    (ii)  violate or  conflict  with any  Applicable  Law or the
               articles  of  incorporation,  by-laws or  similar  constitutional
               documents of the Vendor,  Seagull Corporation or the Corporation;
               or

                    (iii)  give  rise to any  rights of first  refusal  or other
               preemptive, preferential or similar rights to purchase any of the
               Shares or the Assets  created  by,  through or under the  Vendor,
               Seagull  Corporation or the Corporation or of which the Vendor is
               aware;

         (e) No Claims Affecting the Sale of the Shares:  neither the Vendor nor
Seagull Corporation has received notice of any Claim and the Vendor is not aware
of any  Claim,  actual or  threatened,  which  affects  or could  reasonably  be
expected to affect the  consummation  of the  transactions  contemplated by this
Agreement;

         (f) No Finder's Fees:  none of the Vendor,  Seagull  Corporation or the
Corporation  has incurred any obligation or liability,  contingent or otherwise,
for broker's or finder's fees in respect of the transactions contemplated hereby
for  which  the  Purchaser  or the  Corporation  shall  have any  obligation  or
liability; and

         (g) Due  Execution  and  Enforceability:  this  Agreement has been duly
executed  and  delivered  by the Vendor and  Seagull  Corporation  and,  if duly
executed  and  delivered  by  the  Purchaser,   constitutes  valid  and  binding
obligations of the Vendor and Seagull Corporation enforceable against the Vendor
and Seagull  Corporation  in accordance  with its terms,  subject to bankruptcy,
insolvency,  preference,  reorganization,  moratorium  and  other  similar  laws
affecting  creditors'  right generally and the discretion of courts with respect
to equitable and discretionary remedies and defenses.

3.2      Regarding the Corporation

         The  Vendor  and  Seagull  Corporation  represent  and  warrant  to the
Purchaser that:

         (a) Incorporation:  the Corporation is a corporation duly incorporated,
organized and subsisting  under the laws of Alberta with the corporate  power to
own the  Assets  and to  carry on its  business  as now  conducted  by it and is
registered  to carry on business in the Provinces of Alberta,  British  Columbia
and Saskatchewan;

         (b) Share Capital:  the authorized capital of the Corporation  consists
of an unlimited number of Class A, B and C common shares,  and 102,000 preferred
shares of which one Class A common share and 102,000 preferred shares are issued
and  outstanding  all of which are  registered in the name of the Vendor and are
fully paid and non-assessable;

         (c) No Issuance of Shares: there is no contract,  option or other right
binding  on or  which  at any  time in the  future  may  become  binding  on the
Corporation to (i) transfer the Shares,  (ii) allot or issue any of the unissued
shares of the  Corporation or (iii) create any additional  class of shares; 

         (d)  Conduct of  Business:  since  June 30,  1997 the  business  of the
Corporation  has been carried on in the ordinary  course and since that date the
Corporation  has  not  disposed  of  any  of  the  Oil  and  Gas  Assets  except
dispositions which would be permitted by Section 5.2 if they occurred during the
Interim Period;

         (e) Financial  Statements:  the Financial Statements fairly disclose in
all respects that are material the  financial  position of the  Corporation  and
since  June 30,  1997  there  have  been no  changes  in the  business,  assets,
operations,  working capital,  or financial  condition of the Corporation  other
than in the normal course of business,  which has had a Material Adverse Effect,
provided  that no  representation  or warranty is given with respect to: (i) any
change which affects the  exploration for or the production or sale of Petroleum
Substances  generally,   including,  without  limitation,   prices  payable  for
Petroleum Substances,  taxation or government  regulation;  or (ii) reserves for
Environmental and Reclamation Liabilities;

         (f) Dividends:  since June 30, 1997, the Corporation has not,  directly
or  indirectly,  declared  or paid  dividends  or  declared  or made  any  other
distribution  on  any of its  outstanding  shares  and  there  are no  dividends
declared and unpaid or due to be paid and no arrears with respect to the Shares;

         (g) Indemnities and Guarantees: except for indemnities of operators and
similar  obligations  arising in the ordinary course of business under the Title
and Operating Documents, the Corporation has not guaranteed,  endorsed,  assumed
or indemnified,  contingently  or otherwise,  the obligations or indebtedness of
any Person;

         (h) Judgements and Claims:  there are no judgments  unsatisfied against
the  Corporation or any consent  decrees or injunctions to which the Corporation
is subject and there are no Claims in  existence,  or, to the  knowledge  of the
Vendor,  threatened against the Corporation or with respect to any of the Assets
which has had or can  reasonably be expected to have a Material  Adverse  Effect
other than as set forth in Schedule C;

         (i) Subsidiaries: the Corporation does not have any subsidiaries;

         (j)  Investments:  the  Corporation is not a party to any agreements of
any nature to acquire any shares of any corporation or to acquire, capitalize or
invest in any business;

         (k) Non-arm's Length Debt: no director,  former director,  officer,  or
employee of the  Corporation or any Person not dealing at "arm's length" (within
the  meaning of the  Canadian  Tax Act) with any such  Person is indebted to the
Corporation nor is the Corporation indebted to any such Person;

         (l) Taxes: the Corporation has (i) filed all Tax Returns required to be
filed  by  it  prior  to  the  date  hereof,  (ii)  paid  all  Taxes  (including
installments)  due and payable by it prior to the date hereof and (iii) withheld
and remitted to the appropriate governmental authorities all amounts required to
be withheld by it in respect of the Tax liability of any other  Person,  and, to
the Vendor's  knowledge,  there are no Claims  threatened or pending against the
Corporation in respect of Taxes. 

         (m) Tax Pools:  as at the Time of Closing  (after  giving effect to the
Corporation's  claims in respect of its  taxation  year  which,  pursuant to the
Canadian Tax Act, will be deemed to have ended as a result of the acquisition of
control of the  Corporation  which results from the sale of the Shares  pursuant
hereto) the aggregate amount of the Corporation's Tax Pools will not be not less
than $ 85 Million less the reductions in the Tax Pools that are  attributable to
the  transactions  that occur  pursuant  to the CNQ Offer and  between  the date
hereof and the Time of Closing, the Corporation will not do anything (other than
the  transactions  contemplated by this Agreement and the CNQ Offer) which would
result in such Tax Pools  being  restricted  in a manner  which  prevents  their
reasonable utilization;

         (n) Tax  Year:  the  Corporation's  taxation  year (as  defined  in the
Canadian Tax Act) ends on December 31;

         (o)  Employees:  except  the  Employee  Severance  Agreements  and  the
Employee Retention Bonus Agreements:

                         (i)  the  Corporation  is not a  party  to any  written
                    employment  contracts,  collective  bargaining agreements or
                    employee association agreements;

                         (ii) the  Corporation  has not conducted and is not now
                    conducting  any  negotiations   with  any  labour  union  or
                    employee association;

                         (iii) the  Corporation  has no agreements,  policies or
                    understandings  with its employees with respect to increases
                    in their compensation; and

                         (iv)  the  Corporation  has  complied  with  all of its
                    obligations in respect of unemployment  insurance  payments,
                    Canada  Pension  Plan  payments,   income  tax   withholding
                    payments and Worker's Compensation payments;

         (p) Employee Plans: all Employee Plans are listed in Schedule G; and:

                         (i)  the  Corporation  has  paid  or  provided  for all
                    liabilities  for wages,  vacation  pay,  salaries,  bonuses,
                    pensions and all other amounts  payable under Employee Plans
                    prior to the date hereof; and

                         (ii) each of the Employee  Plans  complies with and has
                    been  administered in substantial  compliance with the terms
                    thereof and Applicable Law; and

         (q) Real Property Leases: the Corporation is not a party to or bound by
any real property  leases  except the Office Leases and leases  comprised in the
Title and Operating Documents.

3.3      Regarding the Assets

         The  Vendor  and  Seagull  Corporation  represent  and  warrant  to the
Purchaser that:

         (a) Title:  the Vendor and Seagull  Corporation do not warrant title to
the Assets but do represent and warrant that the Oil and Gas Assets are free and
clear of all  Encumbrances  created by, through or under the  Corporation or its
current Affiliates, other than Permitted Encumbrances,  provided that, except as
expressly set forth in this  subsection,  the Vendor and Seagull  Corporation do
not make any representation or warranty with respect to the Corporation's  title
to any of the Assets;

         (b)  Take or  Pay:  the  Corporation  does  not  have  any  Take or Pay
Obligations and is not bound by any gas balancing agreements;

         (c) Environmental and Reclamation  Liabilities:  except as set forth in
the Komex Report or in Schedule C, the  Corporation  has not received  notice of
any Claim by any third party of any  Environmental  and Reclamation  Liabilities
nor, to the knowledge of Vendor,  are there any  threatened or pending Claims of
Environmental and Reclamation Liabilities and, except obligations arising in the
ordinary  course  of  business  in  respect  of the  abandonment  of  wells  and
facilities when they cease to be useful and the reclamation of the surface sites
thereof;

         (d) Bank Accounts:  all bank accounts maintained by the Corporation are
listed in Schedule F;

         (e) Books and Records: the books of account and other financial records
of the Corporation  reflect fairly and accurately the financial  transactions of
the  Corporation  and are  maintained  in a prudent  business  manner on a basis
consistent with previous practices of the Corporation;

         (f)  Gas  and  Oil  Sales  Contracts:  set  forth  in  Schedule  D is a
description of all Gas and Oil Sales Contracts having a term of more than ninety
(90) days which are not terminable without penalty on notice of ninety (90) days
or less;

         (g) Insurance: since the Effective Date, the Corporation has maintained
insurance in  accordance  with normal  Canadian oil and gas industry  practices,
provided that the Vendor and Seagull  Corporation  shall have no  obligations to
maintain or cause the  Corporation  to maintain any insurance  after the Closing
Date;

         (h)  Disclosure  to  Howard  Mackie:  to  the  Vendor's  knowledge,  in
connection  with the  preparation of the Title  Opinion,  the  Corporation  made
available  to  Howard  Mackie  all of the  material  files  and  records  in the
possession  or  control of the  Corporation  which  were  relevant  to the Title
Opinion; and

         (i)  Disclosure to Sproule:  to the Vendor's  knowledge,  in connection
with the preparation of the Engineering  Report,  the Corporation made available
to Sproule  Associates  Limited all material  information  in the  possession or
control of the Corporation which was relevant to the Engineering Report or which
Sproule  Associates  Limited requested in connection  therewith,  provided that,
except as  expressly  set  forth in this  subsection,  the  Vendor  and  Seagull
Corporation  do not make any  representation  or  warranty  with  respect to the
Engineering Report.


3.4      Negation

         (a) The  Vendor  and  Seagull  Corporation  make no  representation  or
warranty  except as and to the extent set forth in Sections  3.1,  3.2, and 3.3.
Except  for  such  representations  and  warranties,   the  Vendor  and  Seagull
Corporation  shall  not be  liable  (whether  in  contract  or in tort)  for any
covenant, representation,  warranty, opinion, advise or statement which may have
been  made  in  any  document  or  instrument   relative  hereto,  or  otherwise
communicated to the Purchaser in any manner including,  without limitation,  any
information  or opinion  which may have been  provided to the  Purchaser  or its
employees,  agents,  legal  counsel  or other  representatives,  whether  by the
Vendor,  Seagull Corporation or the Corporation or their Affiliates,  employees,
agents, legal counsel or other representatives or otherwise.  Purchaser confirms
that it has only relied upon the  representations  and  warranties  contained in
Sections  3.1,  3.2  and  3.3  and  not on  any  covenants,  representations  or
warranties outside this Agreement.  Purchaser  acknowledges and confirms that it
has performed its own due diligence and,  except for such reliance,  has relied,
and will  continue to rely,  upon its own  engineering,  other  evaluations  and
projections  as the same relate to the  Corporation or the Assets and on its own
inspection of all other physical property and assets which comprise the Assets.

         (b) The Purchaser  acknowledges that the Vendor and Seagull Corporation
shall have no liability or responsibility to the Purchaser or the Corporation in
respect  of any of the  representations,  warranties  or  covenants  made by the
Corporation in or pursuant to the CNQ Offer.

3.5      Purchaser's Representations, Warranties and Covenants

         The  Purchaser  and Rio Alto  represent  and  warrant to the Vendor and
Seagull Corporation that:

         (a)  Incorporation:  each  of  the  Purchaser  and  Rio  Alto  is  duly
incorporated,  organized and subsisting  under the laws of its  jurisdiction  of
incorporation and is duly registered in those jurisdictions where the conduct of
its business so requires;

         (b)  Corporate  Authority:  each  of the  Purchaser  and Rio  Alto  has
corporate  power and  authority to enter into and deliver this  Agreement and to
complete the transactions contemplated hereby;

         (c) Financial Capability: the Purchaser has sufficient cash on hand and
financial  commitments  to complete the sale and purchase of Shares and the Note
herein contemplated;

         (d) No Finder's  Fees:  neither the Purchaser nor Rio Alto has incurred
any obligation or liability,  contingent or otherwise,  for broker's or finder's
fees in respect of the  transactions  contemplated  hereby for which the Vendor,
Seagull  Corporation  or any of its  Affiliates  shall  have any  obligation  or
liability;

         (e)  Purchaser  acting as Principal:  the  Purchaser is purchasing  the
Shares pursuant hereto as principal;

         (f) Due Execution and Enforceability:  this Agreement has been executed
and  delivered by each of the  Purchaser  and Rio Alto and, if duly executed and
delivered by the Vendor and Seagull Corporation, constitutes the Purchaser's and
Rio Alto's  valid and binding  obligation  enforceable  in  accordance  with its
terms, subject to bankruptcy, insolvency, preference,  organization,  moratorium
and other similar laws affecting  creditors' rights generally and the discretion
of courts with respect to equitable and discretionary remedies and defenses; and

         (g) Due Authorization  and no Violations:  provided the Competition Act
Approval is  obtained,  the  execution  and delivery of this  Agreement  and the
completion of the transactions  contemplated hereby have been duly authorized by
all necessary  corporate action on the part of the Purchaser and Rio Alto and do
not and will not violate or conflict with any  Applicable Law or the articles of
incorporation,  by-laws or similar constitutional  documents of the Purchaser or
Rio Alto; and

         (h)  Investment  Canada Act: the purchase of the Shares and the Note by
the  Purchaser  pursuant  hereto is not  reviewable  pursuant  to Part IV of the
Investment Canada Act. 

                                    ARTICLE 4
                         TAX INDEMNITIES AND COVENANTS

4.1      Tax Indemnities

         (a)  Notwithstanding  anything  to the  contrary  expressed  herein but
subject to subsection 4.1 (c) and Section 9.1,  after Closing,  the Vendor shall
(i) be liable to and  indemnify  the  Corporation  (which  in this  Section  4.1
includes  the  Corporation's  successors  and  assigns)  in respect of all Prior
Period Taxes which have not been paid prior to the Effective  Date excluding any
Prior Period Taxes which are  otherwise  adjusted  for  hereunder  and any Prior
Period Taxes which would not have arisen if the transactions contemplated by the
CNQ Offer had not been  undertaken ( "Indemnified  Prior Period Taxes") and (ii)
indemnify  the  Corporation  from and  against  all  Losses  which it suffers in
respect of the breach of the representation and warranty contained in subsection
3.2(m).

         (b) The  Purchaser  shall  give  prompt  written  notice to the  Vendor
whenever  it  becomes  aware  that a Claim has been or may be made for which the
Vendor may be liable  pursuant to subsection  4.1(a).  The Vendor shall have the
right at its own  expense and  employing  counsel of its own choice to have full
carriage and control of the contestation of any such Claim, provided that if the
Claim does not relate  solely to matters to which the  indemnity  in  subsection
4.1(a) may apply, the Purchaser shall, at its own expense and employing  counsel
of its own choice,  have full  carriage and control of the  contestation  of the
portion of the Claim relating to matters to which the indemnity does not relate;
and further  provided that neither the Purchaser nor the Corporation  will agree
to any  compromise  or  settlement of any Claim to which the indemnity may apply
without  the  consent of the  Vendor.  If the  Purchaser  does not  consent to a
settlement of a Claim to which the indemnity in this clause may apply  following
a request  from the Vendor to do so, the  obligation  of the Vendor to indemnify
the  Purchaser  for the Claim  shall be limited  to the  amount of the  proposed
settlement of the Claim and the Vendor shall forthwith  transfer carriage of the
contestation  of the Claim to the Purchaser or its nominee.  The Purchaser,  the
Corporation and the Vendor shall cooperate with each other in any defense of any
such  Claims  and shall  keep each  other  reasonably  informed  of the  conduct
thereof.

         (c) The  indemnities  in  Section  4.1 shall  apply in respect of Taxes
assessed  within the period during which Taxes may be assessed under  Applicable
Law on  the  assumption  that  no  waiver  is  filed  pursuant  to  subparagraph
152(4)(a)(ii) of the Canadian Tax Act or similar provisions of provincial income
tax  legislation  unless such  waiver is filed with the  written  consent of the
Vendor. which may be withheld for any reason whatsoever.

         (d) If the  Corporation  is finally  determined by any relevant  taxing
authority to have Tax Pools,  in the  aggregate,  at the Time of Closing  (after
giving effect to the Corporation's claims in respect of the taxation year which,
pursuant to the  Canadian  Tax Act,  will be deemed to have ended as a result of
the acquisition of control of the Corporation which results from the sale of the
Shares pursuant hereto) less than represented in subsection  3.2(m),  the amount
of the indemnity to which the Purchaser shall be entitled  pursuant hereto shall
be limited to an amount equal to twenty cents ($0.20)  multiplied by each dollar
that such Tax Pools in the aggregate are less than the amount so represented.

         (e) The Purchaser agrees to pay to the Vendor any refund of Indemnified
Prior Period  Taxes,  together  with any interest  received with respect to such
refund,  (whether by payment,  credit,  offset or otherwise)  received after the
Effective  Date by the Purchaser or the  Corporation,  promptly after receipt of
payment of the refund or notice from the relevant governmental authority of such
credit,  offset or other  refund  mechanism,  as the case may be, less any Taxes
payable by the Corporation on any interest  received with respect to such refund
or an amount equal to twenty cents ($0.20) on each dollar of Tax Pools which are
utilized to reduce or eliminate  the Taxes  payable by the  Corporation  on such
interest. Notwithstanding the foregoing, the Purchaser is not required to pay to
the Vendor  any refund of Prior  Period  Taxes  which  arises as a result of the
carryback of losses of the Corporation  which are  attributable to any outlay or
expenditure incurred by the Corporation subsequent to the Closing Date.

         (f) The  Parties  covenant  that they will not  request an audit by any
taxation  authority which may result in an assessment to which the Tax Indemnity
may apply  other  than any audit  which may be  required  to obtain a  clearance
certificate on a wind-up, dissolution or discontinuance of the Corporation.

         (g) The Parties  undertake to inform each other of any audit  inquiries
with  respect to issues to which the Tax  Indemnity  may apply and to  cooperate
with each other in making any  representations  prior to any assessment to which
those indemnities may apply.

         (h) Any reference in this Agreement to the Canadian Tax Act shall refer
to the effect of the  Canadian  Tax Act, as it is in force at the  Closing  Date
together with any amendments  which are publicly  announced prior to the Closing
Date and all  representations,  warranties  or  indemnities  hereunder  shall be
construed  as if the  Canadian  Tax Act were  not  subsequently  amended  except
pursuant to such publicly announced amendments.


4.2      Withholding Tax

         (a)      In this Section 4.2:

                         (i) "Certificate" means the certificate, if any, issued
                    pursuant  to  section  116(4)  of the  Canadian  Tax  Act in
                    respect  of the  sale  of the  Shares  pursuant  hereto,  as
                    amended prior to the Remittance Date;

                         (ii)  "Certificate  Limit" means the certificate  limit
                    (as that term is used in section  116(4) of the Canadian Tax
                    Act) set forth in the  Certificate,  provided  that  until a
                    Certificate is delivered to the Purchaser,  the  Certificate
                    Limit shall be deemed to be zero;

                         (iii)  "Remittance  Date" means the second Business Day
                    prior to the thirtieth day following the end of the calendar
                    month in which the Closing occurs;

                         (iv)  "Withholding  Amount" means an amount equal to 33
                    1/3% of the  amount  (if any) by which  the  portion  of the
                    Purchase   Price   payable   for  the  Shares   exceeds  the
                    Certificate Limit; and

                         (v)  "Escrow  Amount"  means a portion of the  Purchase
                    Price  equal to 33 1/3% of the  amount (if any) by which the
                    portion of the Purchase Price payable for the Shares exceeds
                    the  Certificate  Limit based upon the  Certificate (if any)
                    provided to the Purchaser at or prior to Closing.

         (b) The  Escrow  Amount  shall be paid to  Bennett  Jones  Verchere  at
Closing.  Bennett Jones  Verchere shall deposit the Escrow Amount in an interest
bearing trust account and shall disburse the Escrow Amount as follows:

                         (i) on the  Remittance  Date,  Bennett  Jones  Verchere
                    shall  remit  the  Withholding  Amount  to the  Minister  of
                    National  Revenue  in  accordance  with  section  116 of the
                    Canadian Tax Act; and

                         (ii) if a  Certificate  is furnished  to Bennett  Jones
                    Verchere after the Closing and prior to the Remittance Date,
                    Bennett Jones  Verchere shall promptly pay to the Vendor the
                    amount by which the Escrow  Amount  exceeds the  Withholding
                    Amount (calculated on the basis of such Certificate).

         Except as provided in this subsection, the Purchaser shall not withhold
any portion of the Purchase  Price on account of its  obligations  under section
116 of the Canadian Tax Act.

         (c) Interest actually earned on the Escrow Amount while held by Bennett
Jones Verchere will be paid by Bennett Jones Verchere as follows:

                         (i) 15% (or any greater or lesser  percentage  that may
                    be required at the applicable  time pursuant to the Canadian
                    Tax  Act  or a tax  treaty)  to  the  Minister  of  National
                    Revenue; and 

                         (ii) the balance to the  Vendor. 

                         Vendor will,  on the  Remittance  Date,  cause  Bennett
                    Jones  Verchere to provide the Vendor and the Purchaser with
                    proof  that the  Escrow  Amount  and the  interest  actually
                    earned  thereon  while held by Bennett  Jones  Verchere have
                    been  disbursed by it in accordance  with the  provisions of
                    this Section 4.2.

4.3      Prior Period Tax Returns

         (a) The  Vendor  shall  prepare,  execute  and file all Tax  Returns in
respect of Prior Period Taxes required under  Applicable Law on behalf of and in
the name of the Corporation and at the Vendor's cost. The Vendor shall cooperate
with the  Purchaser  in order to have such Tax  Returns  prepared  in draft form
sixty  (60) days  prior to the  filing  deadline.  Prior to filing  any such Tax
Returns,  the Vendor shall  provide  copies of such Tax Returns to the Purchaser
for its review and comment.

         (b) The Purchaser  shall not,  without the prior written consent of the
Vendor,  cause or allow the  Corporation to originate the  recalculation  and/or
refiling of any Tax Return filed by the Vendor or the  Corporation in respect of
Prior Period Taxes.

         (c) At Closing,  the Purchaser  shall provide to the Vendor  letters of
authorization   empowering  the  Assistant  Vice   President,   Tax  of  Seagull
Corporation  to deal with  Canadian  taxation  authorities  with  respect to any
matter relating to Prior Period Taxes.


                                    ARTICLE 5
                                 INTERIM PERIOD

5.1      Operations Generally

         During the Interim  Period,  the Vendor shall cause the  Corporation to
conduct its business in substantially  the same manner as it currently  conducts
its business.  Without  limiting the generality of the foregoing,  the Purchaser
agrees that, so long as the Corporation  determines to do so consistent with its
past  practices,  during  the  Interim  Period  the  Corporation  may  initiate,
participate in and commit to the drilling, completion,  equipping and abandoning
of  wells;  the  construction,  installation,  decommissioning  and  removal  of
equipment  and  facilities  and the  acquisition  of interests in petroleum  and
natural  gas leases and  similar  instruments.  Notwithstanding  the  foregoing,
without the prior  approval  of the  Purchaser,  which will not be  unreasonably
withheld or delayed,  except as contemplated  by the CNQ Offer,  the Corporation
will not during the Interim Period :

         (a) commit to make an acquisition of an interest or interests in one or
more  petroleum  and  natural  gas leases or  similar  instruments  (whether  by
purchase,  farmin or at a crown sale) if the Corporation reasonably expects that
the consideration payable pursuant to such acquisition will exceed $100,000;

         (b) amend or terminate  any contract if such  amendment or  termination
could reasonably be expected to have a Material  Adverse Effect,  provided that,
solely  for  purposes  of this  paragraph,  the  figure  "25,000,000.00"  in the
definition of Material Adverse Effect shall be deemed to be "500,000.00"; or

         (c) enter into any new employment contract or employee benefit program.

5.2      Negative Covenants of the Corporation

         During  the  Interim  Period,  except  as  otherwise   contemplated  or
permitted by this Agreement  (including  Section 5.1), the Corporation shall not
without  the  prior  written  consent  of  the  Purchaser  (which  will  not  be
unreasonably withheld or delayed).

         (a) sell,  transfer  or dispose  of, or grant an  Encumbrance  on or in
respect  of,  the  whole or any  part of the  Assets,  except  the  creation  of
Permitted  Encumbrances and the sale of Petroleum  Substances  produced from the
Lands or lands pooled or unitized therewith in the ordinary course;

         (b)  enter  into any  transaction  not in the  ordinary  course  of its
business;

         (c) borrow money or incur any indebtedness for money except  borrowings
pursuant to Existing Credit Facilities or Section 5.5;

         (d) make loans or advances,  excluding loans and advances in accordance
with the terms of operating agreements to which the Corporation is a party or by
which it is bound and excluding routine advances to employees of the Corporation
for expenses incurred in the ordinary course;

         (e) issue, sell or agree to issue or sell any shares, rights,  options,
warrants or other securities of the Corporation;

         (f) purchase,  cancel,  retire,  redeem or otherwise acquire any of the
Shares;

         (g) change, amend or modify the Corporation's Articles of Incorporation
or by-laws;

         (h) declare,  set aside, make or pay any dividend or other distribution
in respect of any securities issued by the Corporation;

         (i) alter any of the Employee  Plans,  except as required by Applicable
Law; or

         (j) increase the salaries,  benefits or other  compensation  payable to
any of its directors, officers or employees;

5.3      Insurance

         During the Interim Period,  the Corporation shall maintain insurance in
accordance with normal Canadian oil and gas industry  practices.  The Vendor and
Seagull  Corporation  shall  have  no  obligations  to  maintain  or  cause  the
Corporation to maintain any insurance after the Closing Date.

5.4      Due Diligence

         The  Corporation  shall permit the  Purchaser and its legal counsel and
authorized  representatives  to have access to all of the  Corporation's  books,
records and files  during the Interim  Period for  purposes  of  performing  due
diligence with respect to the Corporation and its assets and affairs, other than
to the extent that such access would result in a breach of any obligation of the
Corporation  to  keep  any  information  confidential.  The  provisions  of  the
Confidentiality  Agreement  shall  continue to be applicable to any  information
made available by the Corporation pursuant to the provisions of this Agreement.

5.5      Bank Debt

         The Vendor covenants to the Purchaser that at the Time of Closing,  the
Bank Debt shall be nil. The Vendor may loan the money to the  Corporation  which
the  Corporation  requires  to reduce the Bank Debt to nil,  which loan shall be
evidenced by the Note.

5.6      Required Approvals

         The Parties  shall use all  reasonable  efforts to obtain the  Required
Approvals  prior to the Time of Closing.  The Vendor  shall be  responsible  for
seeking the  Competition Act Approval and the Purchaser shall be responsible for
seeking the  Investment  Canada Act Approval and each of them shall provide such
information  and  cooperation as the other may reasonably  request in connection
therewith.




5.7      CNQ Offer

         Notwithstanding   anything  to  the  contrary   contained  herein,  the
Corporation may complete the sale of certain of its assets to CNQ that is
contemplated by the CNQ Offer.

5.8      Discharges

         Prior  to the  Closing,  the  Vendor  covenants  to use all  reasonable
commercial  efforts  (which  does not  include  the  payment  of  monies  to the
encumbrance  holder) to obtain  specific  registrable  discharges of all adverse
security interests (other that Permitted  Encumbrances)  identified in the Title
Opinion, the costs of registration to be for the account of Seagull Corporation.
After Closing,  the costs of registration of such  instruments of discharge will
be shared equally between Seagull Corporation and the Purchaser.

                                    ARTICLE 6
                                   CONDITIONS

6.1      Conditions for the Benefit of the Purchaser

         (a) The sale by the Vendor and the  purchase  by the  Purchaser  of the
Shares and the Note pursuant hereto is subject to the following conditions which
are for the exclusive  benefit of the  Purchaser: 

                         (i) the  representations  and  warranties of the Vendor
                    set  forth in  Sections  3.1,  3.2 and 3.3 shall be true and
                    correct in all  material  respects  at the First  Conditions
                    Satisfaction  Time with the same force and effect as if made
                    at and as of such time;

                         (ii) in all  material  respects,  the Vendor shall have
                    performed or complied with all  covenants in this  Agreement
                    to be performed  or complied  with by the Vendor at or prior
                    to the First Conditions Satisfaction Time pursuant hereto;

                         (iii) no changes shall have  occurred  between the date
                    hereof and the First Conditions Satisfaction Time which have
                    had or are  reasonably  expected to have a Material  Adverse
                    Effect except matters (including,  without  limitation,  the
                    prices  payable  for  Petroleum  Substances,   taxation  and
                    government regulation) which are generally applicable to the
                    oil and gas industry;

                         (iv) all Required Approvals shall have been obtained on
                    terms  acceptable  to the Vendor  acting  reasonably,  at or
                    prior to the First Conditions Satisfaction Time;

                         (v) the  Corporation  shall have accepted the CNQ Offer
                    and shall have  performed or complied  with, in all material
                    respects,  all  covenants  in the CNQ Offer  required  to be
                    performed or complied with by the Corporation at or prior to
                    the First Conditions Satisfaction Time pursuant thereto; and

                         (vi) on or  before  the First  Conditions  Satisfaction
                    Time,  the Vendor shall have  delivered to the Purchaser "no
                    interest"  letters  accompanied by an undertaking to provide
                    registrable  instruments  of  discharge  within a reasonable
                    time  after  the  Closing  Date  for  all  adverse  security
                    interests  identified  in the Title  Opinion  to the  extent
                    required  by  Purchaser's  lender  except  those  for  which
                    Seagull Corporation  provides an indemnity to the Purchaser,
                    the costs of registration of such discharges  incurred prior
                    to Closing to be borne by Seagull Energy Corporation and the
                    costs  incurred  after  Closing to be shared  equally by the
                    Purchaser and Seagull Corporation.

         (b) The sale by the Vendor and the  purchase  by the  Purchaser  of the
Shares  and the Note is subject to the  following  conditions  which are for the
exclusive benefit of the Purchaser:

                         (i) between the First Conditions  Satisfaction Time and
                    the Time of Closing the Vendor and Seagull Corporation shall
                    not have done anything which has caused the  representations
                    and  warranties  of the Vendor and Seagull  Corporation  set
                    forth  in  Sections  3.1,  3.2 and  3.3  not to be true  and
                    correct in all material respects at the Time of Closing with
                    the same force and effect as if made at and as of such time;

                         (ii) in all  material  respects,  the Vendor shall have
                    performed or complied with all  covenants in this  Agreement
                    to be performed or complied  with by the Vendor  between the
                    First Conditions  Satisfaction  Time and the Time of Closing
                    pursuant hereto; and

                         (iii) at Closing,  the Vendor shall have  delivered all
                    items which it is  required  to deliver  pursuant to Section
                    7.2.

         (c) If any of the  conditions  set forth in  subsection  6.1(a) are not
satisfied at the First  Conditions  Closing Time, the Purchaser may, at or prior
to the First Conditions  Satisfaction Time, but not after that time, at its sole
option:

                         (i) rescind this Agreement by notice to the Vendor,  in
                    which  event  the  Purchaser  shall  be  released  from  all
                    obligations hereunder; or

                         (ii) waive such  condition  in whole or in part without
                    prejudice   to  any  of  its   rights   in  the   event   of
                    non-performance of any other term,  covenant or condition in
                    whole or in part  without  limiting any other right that the
                    Purchaser may have.

         (d) If any of the  conditions  set forth in  subsection  6.1(b) are not
satisfied at the Time of Closing,  the Purchaser may, at or prior to the Time of
Closing, but not after that time, at its sole option:

                         (i) rescind this Agreement by notice to the Vendor,  in
                    which  event  the  Purchaser  shall  be  released  from  all
                    obligations hereunder; or

                         (ii) waive such  condition  in whole or in part without
                    prejudice   to  any  of  its   rights   in  the   event   of
                    non-performance of any other term,  covenant or condition in
                    whole or in part  without  limiting any other right that the
                    Purchaser may have.

6.2      Conditions for the Benefit of the Vendor

         (a) The sale by the Vendor and the  purchase  by the  Purchaser  of the
Shares  and the Note is subject to the  following  conditions  which are for the
exclusive benefit of the Vendor:

                         (i) the representations and warranties of the Purchaser
                    set forth in  Section  3.5 shall be true and  correct in all
                    material respects at the Time of Closing with the same force
                    and effect as if made at and as of such time;

                         (ii) in all material respects, the Purchaser shall have
                    performed or complied  with all of the terms,  covenants and
                    conditions  of this  Agreement  to be  performed or complied
                    with by the  Purchaser  at or prior  to the Time of  Closing
                    pursuant hereto;

                         (iii) at Closing,  the Purchaser  shall have  delivered
                    all items it is required to deliver pursuant to Section 7.3;
                    and

                         (iv) all Required Approvals shall have been obtained on
                    terms acceptable to the Purchaser,  acting reasonably, at or
                    prior to the Time of Closing.

         (b) If any of the  conditions  set forth in  subsection  6.2(a) are not
satisfied,  the Vendor  may, at or before the Time of Closing but not after that
time, in its sole option:

                         (i) rescind this  Agreement by notice to the Purchaser,
                    in which  event the  Vendor  shall,  except as  provided  in
                    Section  2.3(a)(iii),   be  released  from  all  obligations
                    hereunder; or

                         (ii) waive such  condition  in whole or in part without
                    prejudice   to  any  of  its   rights   in  the   event   of
                    non-performance of any other term,  covenant or condition in
                    whole or in part  without  limiting any other right that the
                    Vendor may have.

6.3      Efforts to Satisfy Conditions

         Each Party shall use all reasonable efforts to cause the conditions set
forth in  Section  6.1 and 6.2 which are  within  its  reasonable  control to be
satisfied.  Each Party shall provide such  information  and  cooperation  to the
other Party as it may reasonably  request in connection with the satisfaction of
such conditions.

6.4      Competition Act Approval

         The  obligations  of the  Parties to  complete  the  purchase  and sale
contemplated  hereby is subject to the  Competition  Act  Approval  having  been
obtained on or before  October 31, 1997.  and if such condition is not satisfied
the Parties  shall be released from their  obligations  to complete the purchase
and sale contemplated hereby.

                                    ARTICLE 7
                                     CLOSING

7.1      Closing

         The Closing shall occur at the Place of Closing at the Time of Closing.

7.2      Deliveries by the Vendor at Closing

         At  Closing, the Vendor shall deliver to the Purchaser:

         (a) the certificates representing the Shares duly endorsed for transfer
by the Vendor,  new share  certificates  issued in the name of the  Purchaser in
respect of the Shares and the Note endorsed to the Purchaser;

         (b) the minute book,  corporate  seal and all corporate  records of the
Corporation;

         (c)  certificate of an officer or director of the Vendor in the form of
Schedule B;

         (d) resignations of all directors and officers of the Corporation;  

         (e) a letter from Howard Mackie  confirming that the Purchaser can rely
on the Title Opinion in connection  with its purchase of the Shares and the Note
pursuant hereto as if it was addressed to the Purchaser; and

         (f) written evidence  establishing  that the outstanding  amount of the
Bank Debt is nil.

7.3      Deliveries by the Purchaser at Closing

         At Closing,  the Purchaser shall:

         (a) pay the Purchase Price to the Vendor, subject to Section 4.2; and

         (b) deliver a certificate of an officer or director of the Purchaser in
the form of Schedule B.


                                    ARTICLE 8
                             ENVIRONMENTAL INDEMNITY

8.1      Indemnity

         The  Purchaser  and Rio Alto shall and shall cause the  Corporation  to
indemnify and save harmless the Vendor, Seagull Corporation and their directors,
officers,  employees,  agents and Affiliates from and against all  Environmental
Liabilities  and all Losses  which  they may  suffer,  sustain,  pay or incur in
respect thereof, whether arising or relating to events occurring prior to, on or
after the Closing Date. The indemnifications contained in this Section 8.1 shall
not limit,  in any way,  the rights and remedies of the  Purchaser  hereunder in
respect of the representation and warranty contained in subsection 3.3(c);


                                    ARTICLE 9
                               GENERAL INDEMNITIES


9.1      Vendor's Indemnity

         Subject  to Section  9.3,  the Vendor  and  Seagull  Corporation  shall
indemnify  and  save  harmless  the  Purchaser  and  its  directors,   officers,
employees,  agents and  Affiliates  from and against  all Losses  which they may
suffer,  sustain,  pay or incur as a consequence of a breach of a representation
and  warranty  contained in Section 3.1, 3.2 or 3.3 or a breach by the Vendor or
Seagull  Corporation  of any of the  covenants  made by them in this  Agreement,
provided  that the Vendor and Seagull  Corporation  shall only be  obligated  to
indemnify  and save them harmless the  Purchaser  and its  directors,  officers,
employees,  agents and Affiliates in respect of  Environmental  and  Reclamation
Liabilities  to the extent of Losses  suffered,  sustained,  paid or incurred by
them as a result of a breach of the  representation  and  warranty  contained in
subsection 3.3(f).





9.2      Purchaser's Indemnity

         The Purchaser and Rio Alto shall indemnify and save harmless the Vendor
and Seagull  Corporation and their directors,  officers,  employees,  agents and
Affiliates from and against all Losses which they suffer,  sustain, pay or incur
as a consequence of:

         (a) a breach of a representation  or warranty  contained in Section 3.5
or a breach by the Purchaser of a covenant made by it in this Agreement; or

         (b) subject to the Vendor's and Seagull  Corporation's  obligations  in
respect of the  indemnity  contained in Section 9.1 and the Tax  Indemnity,  any
matter or  circumstance  relating  to the  Corporation  or to the  Assets or the
operation thereof which occurs before, on or after the Time of Closing.

9.3      Limitations on Vendor's Indemnity

         (a) No Claim against the Vendor or Seagull  Corporation in respect of a
breach of any representation, warranty or covenant made by the Vendor or Seagull
Corporation  in  this  Agreement,  other  than a  Claim  in  respect  of the Tax
Indemnity,  shall be made or be  enforceable,  whether by legal  proceedings  or
otherwise,  unless written notice of such Claim is given by the Purchaser to the
Vendor or Seagull Corporation within twelve (12) months from the Closing Date.

         (b)  Notwithstanding  anything to the contrary  contained  herein,  the
Vendor and Seagull  Corporation shall only be liable to compensate the Purchaser
and its  directors,  officers,  employees,  agents and  Affiliates on account of
breaches  by  the  Vendor  and\or   Seagull   Corporation   of  the   covenants,
representations and warranties made by them in this Agreement (including the Tax
Indemnity) to the extent that the aggregate  Losses  suffered by them in respect
of all breaches by the Vendor and Seagull  Corporation of such  representations,
warranties and covenants exceeds 1% of the Purchase Price, provided that, solely
for  purposes of this  subsection,  Sections  3.1, 3.2 and 3.3 shall be read and
interpreted as if there were no references therein to "Material Adverse Effect".

         (c)  The  maximum  cumulative  liability  of  the  Vendor  and  Seagull
Corporation  in respect  of  breaches  of the  representations,  warranties  and
covenants  made  by  the  Vendor  and  Seagull  Corporation  in  this  Agreement
(including the Tax Indemnity) shall not exceed 62.64% of the Purchase Price.

         (d) Notwithstanding any other provision of this Agreement,  Purchaser's
sole remedy for breach of Vendor's warranties or misrepresentation  contained in
subsection 3.2(m) is limited to the Tax Indemnity.

9.4      Limitations on Purchaser's Indemnity

         (a) No Claim  against  the  Purchaser  in  respect  of a breach  of any
representation or warranty made by the Purchaser in Section 3.5 shall be made or
be enforceable whether by legal proceedings or otherwise,  unless written notice
of such  Claim is given by the Vendor or Seagull  Corporation  to the  Purchaser
within twelve (12) months from the Closing Date.

         (b)  Notwithstanding  anything to the contrary  contained  herein,  the
Purchaser shall only be liable to compensate the Vendor and Seagull  Corporation
and their directors,  officers,  employees,  agents and Affiliates on account of
breaches of the representations,  warranties and covenants made the Purchaser in
this  Agreement to the extent that the aggregate  Losses  suffered by by them in
respect  of all  breaches  of such  representations,  warranties  and  covenants
exceeds 1% of the Purchase Price.

                                   ARTICLE 10
                                   EMPLOYEES

10.1     Offers of Employment

         The Purchaser  confirms to the Vendor and Seagull  Corporation that the
Purchaser  and CNQ will  consider  offering  employment  to all of the Employees
other than the current  president of the  Corporation  and  anticipate  offering
employment to most of such Employees.

10.2     Severance Obligations

         (a) Except as otherwise  provided in  subsection  10.2(c) in respect of
the current president of the Corporation, the Purchaser shall be responsible for
all  obligations  arising in respect of the termination of the employment of any
Employee  following the Closing and will  indemnify and save harmless the Vendor
and Seagull Corporation from all Losses which they may suffer,  sustain,  pay or
incur in respect of the termination of the employment of any Employee  following
the Closing

         (b)  Without  limiting  the  generality  of  subsection  10.2(a),   the
Purchaser  agrees  that if the  Closing  occurs,  the  Purchaser  will cause the
Corporation to honour the Employee Severance Agreements.

         (c) Notwithstanding subsection 10.2(a), the Vendor shall be responsible
for all  obligations  arising in respect of the termination of the employment of
the current president of the Corporation (determined on the basis of the current
terms of his employment by the corporation) if his employment by the Corporation
is  terminated  within 3 months of Closing and will  indemnify and save harmless
the  Purchaser  and the  Corporation  from all  Losses  which  they may  suffer,
sustain,  pay or incur in respect of such  termination  of  employment.  Without
limiting the  generality  of the  foregoing,  the Vendor shall  reimburse to the
Corporation the amount of the Employee Severance Payment paid by the Corporation
to its current  President if his  employment  by the  Corporation  is terminated
within  three (3)  months of the  Closing  Date  within 30 days of  receipt of a
written  request  for  such  reimbursement   containing  reasonable  particulars
thereof.

10.3     Retention Bonuses

         The  Corporation  shall  pay  the  Employee  Retention  Bonuses  to the
Employees  in  accordance   with  the  provisions  of  the  Employee   Retention
Agreements. At Closing, the Vendor shall reimburse to the Corporation the amount
of the  Retention  Bonuses paid to the  Employees at or prior to Closing.  After
Closing,  the  Vendor  will  reimburse  to the  Corporation  the  amount  of any
Retention Bonus paid by the Corporation  after Closing within 30 days of receipt
of a written request for such reimbursement  containing  reasonable  particulars
thereof.

10.4     Recognition of Service

         The Purchaser  covenants  that the Purchaser and all  Affiliates of the
Purchaser  will  recognize  the period of service which an Employee has had with
the  Corporation  for  all  purposes  of such  Employee's  employment  with  the
Corporation, the Purchaser and such Affiliates following Closing.

                                   ARTICLE 11
                                   ARBITRATION

11.1     Arbitration

         (a) Unless otherwise  specifically provided for herein any disagreement
between the parties shall be submitted to arbitration in accordance with
                  this Article.
         (b) Any controversy submitted to arbitration hereunder shall be subject
to the following principles:

                         (i) Upon  written  demand of the  Vendor or  Purchaser,
                    representatives  of the  Purchaser and the Vendor shall meet
                    and  attempt  to  appoint  a  single  arbitrator.   If  such
                    representatives  are unable to agree on a single  arbitrator
                    then upon  written  demand by the Vendor each shall,  within
                    ten (10) days of such demand, name an arbitrator and the two
                    (2) arbitrators so named shall promptly  thereafter choose a
                    third.  If either the Vendor or the Purchaser  shall fail to
                    name an  arbitrator  within ten (10) days from such  demand,
                    then the arbitrator for that party shall be appointed by any
                    Justice of the Court of Queen's Bench of Alberta. If the two
                    (2)  arbitrators  shall fail within ten (10) days from their
                    appointment to agree upon and appoint the third  arbitrator,
                    then such third arbitrator shall be appointed by any Justice
                    of the Court of Queen's Bench of Alberta.

                         (ii) The  arbitrator  or  arbitrators  selected  to act
                    hereunder  shall be qualified by education,  experience  and
                    training to pass upon the particular question in dispute.

                         (iii) The arbitrator or arbitrators chosen as aforesaid
                    shall proceed immediately to hear and determine the question
                    or  questions  in  dispute.   The  decision  of  the  single
                    arbitrator  shall be made within  forty-five (45) days after
                    his or her appointment,  subject to any reasonable delay due
                    to  unforeseen  circumstances.  Where  there  are  three (3)
                    arbitrators,  the decision of the arbitrators, or a majority
                    of them, shall be made within forty-five (45) days after the
                    appointment  of  the  third   arbitrator,   subject  to  any
                    reasonable  delay due to  unforeseen  circumstances.  If the
                    single arbitrator or the arbitrators, or a majority of them,
                    fail to make a decision within the period herein prescribed,
                    then either party may elect to have a new single  arbitrator
                    or arbitrators chosen in the manner herein prescribed, as if
                    none had previously been selected.

                         (iv)  The  decision  of the  single  arbitrator  or the
                    decision of the arbitrators, or a majority of them, shall be
                    drawn up in writing and signed by the single  arbitrator  or
                    by the  arbitrators,  or a  majority  of them,  and shall be
                    final and binding upon the parties hereto.

                         (v) The  liability  between the parties  hereto for the
                    payment  of the  compensation  and  expenses  of the  single
                    arbitrator  or the  arbitrators  shall be  determined by the
                    arbitrator or arbitrators, as the case may be.

                         (vi)  Arbitration  pursuant hereto shall be governed in
                    all respects not addressed  herein by the  provisions of the
                    Arbitration  Act  (Alberta)  and   regulations   thereunder.
                    ARTICLE 12 GUARANTEES


12.1     Seagull Corporation Guarantee

         Seagull Corporation hereby unconditionally guarantees the due, complete
and punctual  performance of all the Vendor's  obligations and liabilities under
this Agreement.

12.2     Rio Alto Guarantee
 
         Rio  Alto  hereby  unconditionally  guarantees  the due,  complete  and
punctual  performance of all the Purchaser's  obligations and liabilities  under
this Agreement.


                                   ARTICLE 13
                                    SURVIVAL

13.1     Survival

         Subject to the  limitations and provisions set forth in this Agreement,
notwithstanding  the  occurrence  of Closing and the items  delivered at Closing
pursuant  hereto,  the  representations,  warranties,  covenants and indemnities
contained in this  Agreement  shall  survive the Closing and the delivery of the
items  delivered  at Closing  pursuant  hereto for the benefit of the Parties in
accordance  with terms  hereof.  If any document  executed at or after  Closing,
pursuant  hereto is  inconsistent  with the  provisions of this  Agreement,  the
provisions  of this  Agreement  shall prevail  unless the Parties  expressly and
explicitly agree to the contrary.

                                   ARTICLE 14
                                     GENERAL

14.1     Further Assurances

         Each of the Vendor and the  Purchaser  shall from time to time  execute
and deliver  all such  further  documents  and  instruments  and do all acts and
things  as the other  party  may,  either  before  or after  the  Closing  Date,
reasonably  require to effectively  carry out or better  evidence or perfect the
full intent and meaning of this Agreement.

14.2     Time of the Essence

         Time shall be of the essence of this Agreement.

14.3     Corporation

         The Vendor shall cause the Corporation to do all of the things which it
is  stated  in this  Agreement  that  the  Corporation  shall  do at or prior to
Closing.  The Purchaser shall cause the Corporation to do all things which it is
stated in this Agreement that the Corporation shall do following Closing.

14.4     Expenses

         Each of the Vendor and Purchaser shall pay their  respective  legal and
accounting  costs and  expenses  incurred in  connection  with the  preparation,
execution  and delivery of this  Agreement  and all  documents  and  instruments
executed  pursuant  hereto  and any other  costs  and  expenses  whatsoever  and
howsoever incurred.

14.5     Public Announcements

         No  public  announcement  or  press  release  concerning  the  sale and
purchase of the Shares shall be made by the Vendor or the Purchaser  without the
prior  written  consent  and joint  approval  of the Vendor  and the  Purchaser;
provided that nothing  contained  herein shall prevent  either party at any time
furnishing any information to any governmental agency or regulatory authority or
to the public if required by applicable law. 14.6 Benefit of the Agreement

14.6      Benefit of Agreement 

         This  Agreement  shall enure to the benefit of and be binding  upon the
respective heirs, executors, administrators, successors and permitted assigns of
the parties  hereto.  No Person other than the Parties and their  successors and
permitted assigns shall be entitled to any rights or benefits hereunder.

14.7     Entire Agreement

         This Agreement and the Confidentiality  Agreement constitute the entire
agreement  between the parties  hereto with respect to the subject matter hereof
and cancels and supersedes any prior  understandings  and agreements (other than
the Confidentiality  Agreement) between the parties hereto with respect thereto,
including without limitation,  any letter agreements between the Purchaser,  the
Vendor  and/or  the  Corporation.  Following  Closing,  the  Purchaser  shall be
released from all obligations under the  Confidentiality  Agreement,  other than
obligations  in  respect  of acts  or  omissions  by the  Purchaser  and/or  its
representatives prior to Closing.

14.8     Amendments and Waiver

         No  modification  of or amendment to this  Agreement  shall be valid or
binding  unless set forth in writing  and duly  executed  by both of the parties
hereto and no waiver of any breach of any term or provisions  of this  Agreement
shall be  effective  or binding  unless  made in writing and signed by the party
purporting to give the same and, unless otherwise provided,  shall be limited to
the specific breach waived.

14.9     Assignment

         This  Agreement  may not be  assigned  by the  Vendor or the  Purchaser
without the written consent of the other party.


14.10    Notices

         Any demand,  notice or other  communication  to be given in  connection
with this  Agreement  shall be given in writing  and shall be given by  personal
delivery,  by  registered  mail or by facsimile  addressed  to the  recipient as
follows:

 
         To the Vendor or Seagull Corporation:

         Seagull Energy Corporation
         1001 Fannin Street, Suite 1700
         Houston, Texas 77002

         Attention:        Chief Counsel
         Fax:              (713) 210-2194
         To the Purchaser or Rio Alto:

         Rio Alto Exploration Ltd.
         2500, 205-5th Avenue S.W.
         Calgary, Alberta T2P 2V7
 
         Attention:        President
         Fax:               (403) 261-7628

         or to such other  address,  individual  or  facsimile  number as may be
designated by notice given by either party to the other.  Any demand,  notice or
other  communication  given by personal delivery shall be conclusively deemed to
have  been  given  on the day of  actual  delivery  thereof  and,  if  given  by
registered  mail,  on the  day of  actual  receipt  thereof  and,  if  given  by
facsimile, on the day of transmittal thereof if given during the normal business
hours of the recipient and on the Business Day during which such normal business
hours next occur if not given  during such hours on any day. If the party giving
any demand,  notice or other  communication knows or ought reasonably to know of
any difficulties with the postal system which might affect the delivery of mail,
any such demand,  notice or other communication shall not be mailed but shall be
given by personal delivery or by facsimile.  Notwithstanding the foregoing,  any
notice  delivered  pursuant to subsection  5.4(b),  subsection  6.1(c) or (d) or
subsection  6.2(b) will be delivered by delivery or by facsimile  during  normal
business hours.

14.11    Change of Corporation's Name

         Within three (3) months following  Closing,  the Purchaser shall change
the name of the Corporation to eliminate the word "Seagull" therefrom.  Promptly
following  such  name  change  but in any case  not  later  than six (6)  months
following  Closing,  the Purchaser  shall change all signs on the  Corporation's
property to remove the word "Seagull" therefrom. Except for the matters referred
to in the preceding provisions of this Section,  following the Closing,  neither
the  Corporation  nor the  Purchaser  shall  use or have  right  to use the word
"Seagull".


14.12    Governing Law

         This  Agreement  shall be governed by and construed in accordance  with
the laws of the Province of Alberta and the laws of Canada applicable therein.

14.13    No Duplication of Adjustments

         The parties agree that the liability and adjustment  provisions  herein
shall be interpreted  such that there shall be no duplication of payment made by
a party in respect of any adjustment or liability. 14.14 Attornment

         For the purpose of all legal proceedings this Agreement shall be deemed
to have been performed in the Province of Alberta and the courts of the Province
of Alberta shall have  jurisdiction  to entertain any action  arising under this
Agreement.  The Vendor and the Purchaser each hereby attorn to the  jurisdiction
of the courts of the Province of Alberta.

14.15    Counterpart Execution

         This Agreement may be executed in as many counterparts as are necessary
and all executed counterparts together shall constitute one agreement.

         IN WITNESS WHEREOF the parties have executed this Agreement.


SEAGULL ENERGY CORPORATION                        745910 ALBERTA LTD.

Per: _________________________                    Per: ________________________


Per: _________________________                    Per: ________________________


SEAGULL ENERGY CANADA
HOLDING COMPANY

Per: _________________________

Per: _________________________


RIO ALTO EXPLORATION LTD.

Per: _________________________

Per: _________________________







                                  Exhibit 99.1



               UNAUDITED PRO FORMA CONDENSED FINANCIAL INFORMATION


         On September 11, 1997, Seagull Energy Corporation,  a Texas corporation
("Seagull" or the "Company"),  entered into a Share Sale Agreement with Rio Alto
Exploration Ltd. ("Rio Alto")  regarding the sale of Seagull's  Canadian oil and
gas subsidiary, Seagull Energy Canada Ltd. ("Seagull Canada"). The unaudited pro
forma condensed  statements of operations for the six months ended June 30, 1997
and the year ended  December 31, 1996 give effect to the sale of Seagull  Canada
as if the  disposition  had occurred on January 1, 1996. The unaudited pro forma
condensed  balance sheet as of June 30, 1997 gives effect to the sale of Seagull
Canada as if the disposition had occurred on June 30, 1997.

         The  unaudited  pro  forma  information   presented  is  based  on  the
historical  consolidated  financial  statements of Seagull and should be read in
conjunction  with such  financial  statements  and the  related  notes  thereto.
Certain  reclassifications  have been made to 1996 information to conform to the
presentation  used in 1997. The unaudited pro forma  information  presented does
not purport to be indicative of actual  results,  as if the disposition had been
in effect on the dates or for the periods indicated, or of future results.


<PAGE>
          
                                      SEAGULL ENERGY CORPORATION
                                               PRO FORMA
                                        STATEMENT OF OPERATIONS
                            (Amounts in Thousands Except Per Share Amounts)

<TABLE>
<CAPTION>


                                                                Six Months Ended June 30, 1997
                                            -----------------------------------------------------------------------
                                                                Seagull          Pro Forma
                                               Seagull          Canada          Adjustments            Pro Forma
                                            -------------   ---------------  ------------------     ---------------
                                                                  (A)
<S>                                         <C>              <C>              <C>                   <C>
 Revenues:                                                        
   Oil and gas operations                    $  230,410      $    18,384                             $   212,026
   Alaska transmission and distribution          51,343                -                                  51,343
                                            -------------   ---------------  ------------------     ---------------
                                                281,753           18,384                     -           263,369
                                            -------------   ---------------  ------------------     ---------------

 Costs of Operations:
   Alaska transmission and distribution 
     cost of gas sold                            23,966                -                                  23,966
   Operations and maintenance                    83,876            5,887                                  77,989
   Exploration charges                           16,299            1,469                                  14,830
   Depreciation, depletion and amortization      87,772            7,595                                  80,177
   General and administrative                     5,423                -                                   5,423
                                            -------------   ---------------  ------------------     ---------------
                                                217,336           14,951                    -            202,385
                                            -------------   ---------------  ------------------     ---------------

 Operating Profit (Loss)                         64,417            3,433                    -             60,984
 Other (Income) Expense:
   Interest expense                              19,995            1,360            (3,125)     (B)       15,510
   (Gain) loss on sales of property, 
      plant and equipment, net                      118              (15)                                    133
   Interest income and other                     (1,031)              (6)                                 (1,025)
                                            -------------   ---------------  ------------------     ---------------

 Income Before Income Taxes                      45,335            2,094             3,125                46,366
                                            -------------   ---------------  ------------------     ---------------
                                                                                                                             
 Income Tax Expense                              25,460            1,332             1,094      (C)       25,222
                                            -------------   ---------------  ------------------     ---------------


 Net Income                                  $   19,875     $        762     $       2,031          $     21,144 
                                            =============   ===============  ==================     ===============

 Earnings Per Share                          $     0.31                                             $       0.33
                                            =============                                           ===============

 Weighted Average Number of Common
      Shares Outstanding                         64,028                                                   64,028
                                            =============                                           ===============


</TABLE>


                                     
         See  accompanying  notes to unaudited pro forma condensed  statement of
operations.
<PAGE>

                                      SEAGULL ENERGY CORPORATION
                                               PRO FORMA
                                         STATEMENT OF OPERATIONS
                             (Amounts in Thousands Except Per Share Amounts)

                                              
<TABLE>
<CAPTION>


                                                                Year Ended December 31, 1996
                                           -----------------------------------------------------------------------
                                                              Seagull          Pro Forma
                                              Seagull         Canada          Adjustments             Pro Forma
                                           -------------  ---------------  ------------------      ---------------
                                                                (A)
<S>                                         <C>           <C>               <C>                     <C>
 Revenues:
     Oil and gas operations                 $   419,595   $       33,816                           $      385,779
     Alaska transmission and distribution        97,616                -                                   97,616
                                           -------------  ---------------  ------------------      ---------------
                                                517,211           33,816                   -              483,395
                                           -------------  ---------------  ------------------      ---------------

 Costs of Operations:
     Alaska transmission and distribution 
         cost of gas sold                        42,600                -                                   42,600
     Operations and maintenance                 147,294           14,147                                  133,147
     Exploration charges                         50,772            4,295                                   46,477
     Depreciation, depletion and
        amortization                            155,669           16,856                                  138,813
     General and administrative                  17,433                -                                   17,433
                                           -------------  ---------------  ------------------      ---------------
                                                413,768           35,298                   -              378,470
                                           -------------  ---------------  ------------------      ---------------

 Operating Profit (Loss)                        103,443           (1,482)                  -              104,925
 Other (Income) Expense:
     Merger expense                               9,982                -                                    9,982
     Interest expense                            44,842            4,191             (6,170)  (B)          34,481
     (Gain) loss on sales of property,
         plant and equipment, net                (1,088)            (501)                                    (587)
     Interest income and other                   (5,149)            (350)                                  (4,799)
                                           -------------  ---------------  ------------------      ---------------
                                                 48,587            3,340             (6,170)               39,077
                                           -------------  ---------------  ------------------      ---------------

 Income (Loss) Before Income Taxes               54,856           (4,822)             6,170                65,848
                                                                                    
 Income Tax Expense                              25,895            1,375              2,160  (C)           26,680
                                           -------------  ---------------  ------------------      ---------------


 Net Income (Loss)                          $    28,961    $      (6,197)  $          4,010        $       39,168
                                           =============  ===============  ==================      ===============

 Earnings Per Share                         $     0.45                                             $         0.61
                                           =============                                           ===============

 Weighted Average Number of Common
     Shares Outstanding                         64,073                                                     64,073
                                           =============                                           ===============



                 See accompanying notes to unaudited pro forma condensed statement of operations.



</TABLE>


<PAGE>

                          NOTES TO UNAUDITED PRO FORMA
                       CONDENSED STATEMENTS OF OPERATIONS


         The Company expects to close the transaction no later than early in the
fourth  quarter 1997.  These pro forma  financial  statements do not include any
purchase price adjustments to be determined upon closing, which are not expected
to be material to the financial information presented herein.

(A) To remove the results of operations of Seagull Canada.

(B) To reduce  interest  expense to give effect to the use of net proceeds  from
the  disposition to reduce amounts  outstanding  under U.S. and Canadian  credit
facilities.

(C) To adjust  U.S.  federal  incomes  taxes for the  impact of the  adjustments
described in Note (B) above.  This amount does not include the tax benefits that
are  expected  to be realized  upon  closing of the sale of  approximately  $4.0
million.


<PAGE>

                                          SEAGULL ENERGY CORPORATION
                                                   PRO FORMA
                                            CONDENSED BALANCE SHEET
                                             (Amounts in Thousands)
<TABLE>
<CAPTION>


                                                                         June 30, 1997
                                                   ------------------------------------------------------------
                                                                     Seagull         Pro Forma
                                                      Seagull        Canada         Adjustments     Pro Forma
                                                   -------------  -------------   --------------  -------------
                                                                      (A)
<S>                                                <C>            <C>             <C>             <C>
 Assets
     Current Assets:
        Cash and cash equivalents                   $   29,465    $         38              -      $    29,427
        Accounts receivable, net                       149,346           4,565                         144,781
        Inventories                                     13,638             638                          13,000
        Prepaid expenses and other                      15,271             360                          14,911
                                                   -------------  -------------   ------------      -----------
           Total Current Assets                        207,720           5,601              -          202,119

     Property, Plant and Equipment - at cost 
       (successful efforts method for oil and
        gas properties)                              2,177,335         248,189                       1,929,146
     Accumulated Depreciation, Depletion and 
        Amortization                                   890,298          57,166                         833,132
                                                   -------------   ------------   ------------      -----------
                                                     1,287,037         191,023              -        1,096,014
     Other Assets                                       43,011             456                          42,555
                                                   -------------   ------------   ------------      -----------                
    Total Assets                                    $1,537,768     $   197,080    $         -       $1,340,688
                                                   =============   ============   ============      ===========


 Liabilities and Shareholders' Equity
     Current Liabilities:
        Accounts and note payable                   $  158,140     $    4,346                       $  153,794
        Accrued expenses                                45,028            877                           44,151
        Current maturities of long-term debt             7,247              -               -            7,247
                                                   -------------   ------------   ------------      -----------
           Total Current Liabilities                   210,415          5,223                          205,192

     Long-Term Debt                                    588,752         64,436        (113,064)(B)      411,252
     Other Noncurrent Liabilities                       60,348            103                           60,245
     Deferred Income Taxes                              42,154         23,589          (4,000)(C)       14,565

     Redeemable Bearer Shares                           15,837              -                           15,837

     Shareholders' Equity                              620,262        103,729         117,064 (D)      633,597

     Commitments and Contingencies                           -                                               -
                                                   -------------   -----------    ------------      -----------

     Total Liabilities and Shareholders' Equity     $1,537,768     $  197,080     $         -       $1,340,688
                                                   =============   ===========    ============      ===========

                                                                                                                            
                      See accompanying notes to unaudited pro forma condensed balance sheet.



</TABLE>

<PAGE>

                          NOTES TO UNAUDITED PRO FORMA
                             CONDENSED BALANCE SHEET

         The Company expects to close the transaction no later than early in the
fourth  quarter 1997.  These pro forma  financial  statements do not include any
purchase price adjustments to be determined upon closing, which are not expected
to be material to the financial information presented herein.

(A) To remove  the  assets,  liabilities  and  shareholders'  equity of  Seagull
Canada.

(B) To reflect  estimated  use of net proceeds at June 30, 1997 to repay all the
long-term  debt of Seagull  Canada  ($64.4  million) and the remainder to reduce
Seagull's long-term debt ($113.1 million).

(C) To record the estimated income tax benefit of $4 million associated with the
sale of Seagull Canada.

(D) To (i) record  the gain on sale of Seagull  Canada,  including  the  related
income tax benefit,  as if the  disposition  had occurred on June 30, 1997,  and
(ii) reflect shareholders' equity of Seagull Canada as of June 30, 1997.




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