TEJAS GAS CORP
8-K/A, 1996-02-01
NATURAL GAS TRANSMISSION
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                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D. C. 20549





                                   FORM 8-K/A

                           AMENDMENT NO. 1 TO 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).....November 1, 1995

                              TEJAS GAS CORPORATION
             (Exact name of registrant as specified in its charter)




        DELAWARE                     0-17389              76-0263364
(State or other jurisdiction       (Commission          (I.R.S. Employer
     of incorporation)             File Number)       Identification Number)


     1301 MCKINNEY, SUITE 700
          HOUSTON, TEXAS                                     77010
 (Address of principal executive offices)                  (Zip Code)


       Registrant's telephone number, including area code: (713) 658-0509


================================================================================


<PAGE>



Item 7.   Financial Statements and Exhibits [Explanatory Note].

     The  Registrant's  Current  Report  on Form 8-K dated  November  2, 1995 is
hereby amended to include the physical re-filing of Exhibit 10.3.

ITEM 7.   FINANCIAL STATEMENTS AND EXHIBITS.

          (c) Exhibits

              *10.1      Gas  Sale  and  Purchase  Contract  Between  Tejas  Gas
                         Corporation,  as Seller,  and Coral  Energy  Resources,
                         L.P., as Buyer, dated November 1, 1995

              *10.2      Gas Sale and  Purchase  Contract  Between  Acadian  Gas
                         Corporation,  as Seller,  and Coral  Energy  Resources,
                         L.P., as Buyer, dated November 1, 1995

              *10.3     Limited    Partnership   Agreement   of   Coral   Energy
                         Resources, L.P., dated September 1, 1995




- ----------------------

*    Certain portions omitted pursuant to a confidential treatment request filed
     separately with the Securities and Exchange Commission.


<PAGE>



                                   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.



                                   TEJAS GAS CORPORATION
                                   (Registrant)



Date: January  31, 1996             By: /S/ JAMES W. WHALEN
                                      --------------------
                                       James W. Whalen
                                       Executive Vice President and
                                       Chief Financial Officer



<PAGE>


                                  EXHIBIT INDEX


EXHIBIT NO.                        DESCRIPTION

  10.3              Limited Partnership Agreement of Coral Energy Resources,
                    L.P. dated September 1, 1995




                        LIMITED PARTNERSHIP AGREEMENT OF
                          CORAL ENERGY RESOURCES, L.P.


                         (DATED AS OF SEPTEMBER 1, 1995)






THE INTERESTS  DESCRIBED IN THIS  AGREEMENT HAVE NOT BEEN  REGISTERED  UNDER THE
SECURITIES ACT OF 1933, AS AMENDED,  OR ANY STATE  SECURITIES LAWS (THE "ACTS").
SUCH  INTERESTS ARE BEING OFFERED AND SOLD FOR INVESTMENT AND MAY NOT BE SOLD OR
OFFERED FOR SALE IN THE ABSENCE OF AN EFFECTIVE  REGISTRATION STATEMENT FOR SUCH
INTERESTS UNDER THE ACTS OR AN EXEMPTION THEREFROM UNDER THE ACTS.



<PAGE>



                                TABLE OF CONTENTS


ARTICLE I.................................................................  1
         DEFINITIONS......................................................  1
         1.1      DEFINITIONS.............................................  1
         1.2      OTHER DEFINED TERMS..................................... 12
         1.3      CONSTRUCTION............................................ 12
         1.4      REFERENCES.............................................. 12

ARTICLE II................................................................ 12
         FORMATION, NAME, PURPOSES AND OFFICES............................ 12
         2.1      ORGANIZATION............................................ 12
         2.2      PARTNERSHIP NAME........................................ 12
         2.3      PURPOSES................................................ 12
         2.4      REGISTERED OFFICE; PRINCIPAL OFFICE..................... 13
         2.5      TERM.................................................... 13
         2.6      FILINGS................................................. 13
         2.7      INDEPENDENT ACTIVITIES.................................. 13
         2.8      POWERS.................................................. 13

ARTICLE III............................................................... 14
         PARTNERS' CAPITAL CONTRIBUTIONS AND SHIFTS IN EQUITY SHARES...... 14
         3.1      CAPITAL CONTRIBUTIONS................................... 14
         3.2      CAPITAL CONTRIBUTIONS OF THE PARTNERS................... 14
         3.3      TRUE-UP OF VALUE OF ECONOMIC INTERESTS CONTRIBUTED...... 14
         3.4      ADDITIONAL FUNDING...................................... 16
         3.5      CAPITAL ACCOUNTS........................................ 17
         3.6      1998 EQUITY SHIFT....................................... 20
         3.7      1999 EQUITY SHIFT....................................... 22
        [3.8     intentionally left blank.]............................... 24
         3.9      PARTNERSHIP PREFERRED RETURN DETERMINATION PROMPTED BY
                  UNANTICIPATED CHANGE IN VOLUME.......................... 25
         3.10     OTHER MATTERS........................................... 27

ARTICLE IV................................................................ 27
         DISTRIBUTIONS.................................................... 27
         4.1      DISTRIBUTIONS........................................... 27
         4.2      TAX DISTRIBUTIONS....................................... 28

ARTICLE V................................................................. 28
         ALLOCATIONS...................................................... 28
         5.1      ALLOCATIONS OF PROFITS.................................. 28
         5.2      ALLOCATIONS OF LOSSES................................... 28
         5.3      SPECIAL ALLOCATIONS..................................... 29
         5.4      CURATIVE ALLOCATIONS.................................... 31
         5.5      OTHER ALLOCATION RULES.................................. 31

<PAGE>

         5.6      ALLOCATIONS FOR TAX PURPOSES............................ 32

ARTICLE VI................................................................ 33
         MANAGEMENT OF THE PARTNERSHIP.................................... 33
         6.1      BOARD................................................... 33
         6.2      OFFICERS................................................ 37
         6.3      POWERS RESERVED TO GENERAL PARTNERS..................... 38
         6.4      RESOLUTION OF DEADLOCK.................................. 39
         6.5      DUTIES, RIGHTS AND OBLIGATIONS OF PARTNERS.............. 40
         6.6      INDEMNIFICATION OF THE GENERAL PARTNER.................. 41
         6.7      PARTNERSHIP ACCOUNTS.................................... 41
         6.8      APPROVAL BY LIMITED PARTNERS............................ 42
         6.9      RELIANCE BY THIRD PARTIES............................... 42
         6.10     TRANSACTIONS WITH PARTNERS.............................. 42

ARTICLE VII............................................................... 42
         BOOKS AND RECORDS................................................ 42
         7.1      BOOKS AND RECORDS; PERIODIC REPORTING................... 42
         7.2      RIGHT TO INSPECTION..................................... 43
         7.3      TAX MATTERS PARTNER..................................... 43
         7.4      TAX ELECTIONS........................................... 44

ARTICLE VIII.............................................................. 45
         TRANSFER; ADMISSION AND WITHDRAWAL OF PARTNERS................... 45
         8.1      RESTRICTIONS ON TRANSFER................................ 45
         8.2      TRANSFER TO AFFILIATE OR TRANSFER WITH CONSENT.......... 45
         8.3      "FIRST LOOK" TRANSFERS AFTER EXIT DATE.................. 45
         8.4      "LAST LOOK" TRANSFERS AFTER EXIT DATE................... 46
         8.5      PARTNERSHIP INTEREST RETIREMENT OPTION.................. 47
         8.6      ADMISSION OF NEW LIMITED PARTNERS....................... 48
         8.7      CHANGE OF CONTROL....................................... 49
         8.8      WITHDRAWAL OF A PARTNER................................. 50
         8.9      SUBSTITUTE PARTNERS..................................... 51
         8.10     EFFECT OF DISPOSITION................................... 51
         8.11     EFFECT OF NONCOMPLIANCE................................. 51
         8.12     EFFECT ON SUPPLY AGREEMENTS............................. 51
ARTICLE IX................................................................ 52
         DISSOLUTION OF PARTNERSHIP....................................... 52
         9.1      DISSOLUTION EVENTS...................................... 52
         9.2      RECONSTITUTION OF THE PARTNERSHIP....................... 53

ARTICLE X................................................................. 54
         LIQUIDATION OF THE PARTNERSHIP................................... 54
         10.1     LIQUIDATION............................................. 54
         10.2     COMPLIANCE WITH TIMING REQUIREMENTS OF REGULATIONS...... 55
         10.3     DEEMED DISTRIBUTION AND RECONSTITUTION.................. 55
         10.4     RIGHTS OF LIMITED PARTNERS.............................. 55


<PAGE>

CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)


ARTICLE XI................................................................ 56
         REPRESENTATIONS OF LIMITED PARTNERS; INDEMNIFICATION............. 56
         11.1     REPRESENTATIONS OF LIMITED PARTNERS..................... 56
         11.2     INDEMNIFICATION......................................... 57
         11.3     NET WORTH MAINTENANCE................................... 57

ARTICLE XII............................................................... 57
         MISCELLANEOUS.................................................... 57
         12.1     *                        ............................... 57
         12.2     ADDITIONAL DOCUMENTS AND ACTS........................... 57
         12.3     GOVERNING LAW........................................... 58
         12.4     SEVERABILITY............................................ 58
         12.5     BINDING EFFECT.......................................... 58
         12.6     AGREEMENT RESTRICTED TO PARTNERS........................ 58
         12.7     COUNTERPARTS............................................ 58
         12.8     POWER OF ATTORNEY; AMENDMENTS........................... 58
         12.9     NOTICES................................................. 59
         12.10    BINDING ARBITRATION..................................... 60
         12.11    CONFIDENTIAL INFORMATION................................ 61
         12.12    WAIVER OF CONSEQUENTIAL AND PUNITIVE DAMAGES............ 62
         12.13    CONFLICTS WITH INITIAL AGREEMENTS....................... 62


EXHIBITS

         A -      Capital Contributions

         B -      Initial Agreements

         C -      Shell LP1 Economic Interest Contributions

         D -      Tejas LP1 Economic Interest Contributions

         E -      Projected Sales Margins of Shell LP1 Economic Interest
                  Contributions

         F -      Projected Sales Volumes of Tejas LP1 Economic Interest
                  Contributions

         G -      Initial Business Plan




<PAGE>


THE INTERESTS  DESCRIBED IN THIS  AGREEMENT HAVE NOT BEEN  REGISTERED  UNDER THE
SECURITIES ACT OF 1933, AS AMENDED,  OR ANY STATE  SECURITIES LAWS (THE "ACTS").
SUCH  INTERESTS ARE BEING OFFERED AND SOLD FOR INVESTMENT AND MAY NOT BE SOLD OR
OFFERED FOR SALE IN THE ABSENCE OF AN EFFECTIVE  REGISTRATION STATEMENT FOR SUCH
INTERESTS UNDER THE ACTS OR AN EXEMPTION THEREFROM UNDER THE ACTS.

                        LIMITED PARTNERSHIP AGREEMENT OF
                          CORAL ENERGY RESOURCES, L.P.


     THIS LIMITED PARTNERSHIP AGREEMENT ("AGREEMENT") of Coral Energy Resources,
L.P.  (the  "PARTNERSHIP"),  shall be  effective  as of  September  1, 1995 (the
"EFFECTIVE  DATE"),  by and  among  Shell  Gas  Marketing  Company,  a  Delaware
corporation ("Shell GP"), and Tejas Alliance GP Company, a Delaware  corporation
("Tejas GP"), each as a general partner of the Partnership, Shell Gas Investment
Company,  a Delaware  corporation  ("Shell  LP2") and Tejas  Alliance  Resources
Company,  a Delaware  corporation  ("Tejas LP2"), as limited  partners,  and the
additional limited partners identified on the signature pages to this Agreement.

         WHEREAS,  effective  November  1, 1995,  Shell Gas Trading  Company,  a
Delaware corporation ("SGTC"), Shell Offshore Inc. ("SOI") and Shell Western E&P
Inc. ("SWEPI"),  as limited partners hereunder  (collectively referred to herein
as  "Shell  LP1"  until  such  time  as SOI and  SWEPI  transfer  their  limited
partnership  Interests  to their  indirect  successor  SGTC  (thereafter,  alone
referred to herein as "Shell LP1")), shall make the contributions identified for
them on  EXHIBIT  A  hereto,  and  thereafter  SOI and  SWEPI  shall  indirectly
contribute their limited partnership Interests to SGTC;

         WHEREAS, the direct and indirect  subsidiaries of Tejas Gas Corporation
identified on the signature  pages to this Agreement  (collectively  referred to
herein as "Tejas LP1" until such time as they transfer their limited partnership
Interests to their indirect  successor Tejas Alliance Energy Company, a Delaware
corporation  (thereafter,  referred to herein as "Tejas  LP1")),  shall make the
contributions  identified  for them on EXHIBIT A hereto,  and  thereafter  shall
contribute  their limited  partnership  Interests to said Tejas Alliance  Energy
Company; and

         WHEREAS,  references to Shell GP, Tejas GP, Shell LP1, Shell LP2, Tejas
LP1, and Tejas LP2 herein shall also refer to any successor to their  respective
Interests (as herein defined);

         NOW, THEREFORE, the undersigned parties agree as follows:


                                    ARTICLE I

                                   DEFINITIONS

     1.1  DEFINITIONS.  In addition to the defined  terms set forth  above,  the
following  capitalized terms shall have the following meanings when used in this
Agreement:


                                       1
<PAGE>

CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)


               (a) "* CREDIT  RATING"  means a credit  rating of * or above from
          Standard & Poor's or * or above from Moody's Investor Service.

               (b) "ACCOUNTANTS" means the independent  accounting firm retained
          by the Board to audit the financial statements of the Partnership.

               (c) "ACT" means the Delaware Revised Uniform Limited  Partnership
          Act, Title 6, Chapter 17 of the Delaware Code, as amended from time to
          time (or any corresponding provisions of succeeding law).

               (d)   "ADDITIONAL   CAPITAL   CONTRIBUTION"   means  any  Capital
          Contribution   by  a   Partner   other   than  its   initial   Capital
          Contributions.

               (e)  "ADDITIONAL  PARTNERS"  means any Partner  acquiring a newly
          created Interest after the date hereof.

               (f) "ADJUSTED CAPITAL ACCOUNT" means, with respect to any Limited
          Partner,  the balance in such Limited  Partner's Capital Account as of
          the end of the  relevant  Fiscal  Year,  after  giving  effect  to the
          following adjustments:

                    (i) Credit to such Capital  Account the maximum amount which
               such Limited Partner could then be obligated to restore  pursuant
               to any  provision of this  Agreement or is deemed to be obligated
               to restore  pursuant  to the  penultimate  sentences  of Sections
               1.704-2(g)(1) and 1.704-2(i)(5) of the Regulations;

                    (ii) Debit to such  Capital  Account the items  described in
               Sections  1.704-1(b)(2)(ii)(d)(4),  1.704-1(b)(2)(ii)(d)(5),  and
               1.704-1(b)(2)(ii)(d)(6) of the Regulations.

         The  foregoing  definition of Adjusted  Capital  Account is intended to
         comply  with the  provisions  of  Section  1.704-1(b)(2)(ii)(d)  of the
         Regulations  and  shall  be  interpreted  consistently  therewith.  The
         Adjusted  Capital  Account in respect of an interest  held by a Limited
         Partner shall be the amount which such Adjusted  Capital  Account would
         be if such  interest in the  Partnership  was the only  interest in the
         Partnership held by a Limited Partner.

               (g) "ADJUSTED CAPITAL ACCOUNT DEFICIT" means, with respect to any
          Partner,  the  deficit  balance,  if any, in such  Partner's  Adjusted
          Capital Account.

               (h) "ADJUSTED  PROPERTY" means any property the Carrying Value of
          which has been adjusted pursuant to SECTION 3.5(d) OR 3.5(e).  Once an
          Adjusted Property is deemed  distributed by, and recontributed to, the
          Partnership for federal income tax purposes upon a termination thereof
          pursuant to Section 708 of the Code,  such property  shall  thereafter
          constitute a  Contributed  Property  until the Carrying  Value of such
          property  is  subsequently  adjusted  pursuant  to  SECTION  3.5(d) OR
          3.5(e).


                                       2

<PAGE>

CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)


               (i)  "AFFILIATE"  means,  with respect to any Person,  any Person
          controlling,  controlled by or under common  control with such Person,
          with the concept of control in such  context  meaning the  possession,
          directly  or  indirectly,  of the power to direct the  management  and
          policies  of  another,   whether   through  the  ownership  of  voting
          securities, by contract or otherwise.

               (j) "AGREED  VALUE" of any  Contributed  Property  means the fair
          market value of such  property or other  consideration  at the time of
          contribution as determined by the Board using such  reasonable  method
          of valuation as it may adopt. The Board shall, in its sole discretion,
          use such method as it deems reasonable and appropriate to allocate the
          aggregate  Agreed Value of Contributed  Properties  contributed to the
          Partnership in a single or integrated  transaction among each separate
          property  on a basis  proportional  to the fair  market  value of each
          Contributed Property.

               (k)  "BOARD"  has the  meaning  ascribed  to such term in SECTION
          6.1(a).

               (l)  "BOOK-TAX  DISPARITY"  means  with  respect  to any  item of
          Contributed  Property  or  Adjusted  Property,   as  of  the  Date  of
          Determination,  the  difference  between  the  Carrying  Value of such
          Contributed  Property  or Adjusted  Property  and the  adjusted  basis
          thereof for federal  income tax  purposes as of such date. A Partner's
          share  of  the  Partnership's  Book-Tax  Disparities  in  all  of  its
          Contributed  Property and Adjusted  Property  will be reflected by the
          difference   between  such  Partner's   Capital   Account  balance  as
          maintained  pursuant  to SECTION 3.5 and the  hypothetical  balance of
          such Partner's  Capital Account  computed as if it had been maintained
          strictly in accordance with federal income tax accounting principles.

               (m)  "BREAK-UP  VALUE"  means the cash plus fair market  value of
          contracts and other assets (net of any liabilities and net of any debt
          encumbering  such  assets)  that would be received  by the  Requesting
          Partner Group from a liquidation of the Partnership in accordance with
          ARTICLE X, following a dissolution in accordance with ARTICLE IX.

               (n) "BUSINESS  DAYS" means any days upon which national banks are
          open for business in the city of Houston, Texas.

               (o)   "BUSINESS   PLAN"  means  a  document   setting  forth  the
          Partnership's  strategy,  profit  plan,  marketing  and trading  plan,
          financing and  capitalization  plan, capital  expenditures  budget and
          expense budget, as approved by the Board. The initial Business Plan is
          attached as EXHIBIT G.

               (p) "CAPITAL  ACCOUNT" means the Capital  Account  maintained for
          each Partner pursuant to SECTION 3.5.

               (q) "CAPITAL  CHARGE" means an amount  computed on the applicable
          outstanding  balance,  from time to time,  at the rate of * per annum,
          pretax.

               (r) "CAPITAL  CONTRIBUTIONS"  means, with respect to any Partner,
          the amount of money,  in cash, and the initial Net Agreed Value of any
          property  (other  than  money)


                                      3
<PAGE>


          contributed  to the  Partnership  with  respect to the interest in the
          Partnership held by such Partner.  Loans to the Partnership  shall not
          be considered Capital Contributions or included in the Capital Account
          of any Partner. The principal amount of a promissory note which is not
          readily  traded  on an  established  securities  market  and  which is
          contributed to the  Partnership by the maker of the note (or a Partner
          related  to the  maker of the  note  within  the  meaning  of  Section
          1.704-1(b)(2)(ii)(c)  of the Regulations) shall not be included in the
          Capital Account of any Partner until the  Partnership  makes a taxable
          disposition  of the  note  or  until  (and  to the  extent)  principal
          payments  are  made  on the  note,  all  in  accordance  with  Section
          1.704-1(b)(2)(iv)(d)(2) of the Regulations.

               (s)  "CARRYING  VALUE"  means (i) with  respect to a  Contributed
          Property,  the Agreed  Value of such  property  reduced (but not below
          zero) by all depreciation,  amortization and cost recovery  deductions
          charged  to  the  Partners'   Capital  Accounts  in  respect  of  such
          Contributed  Property and (ii) with  respect to any other  Partnership
          property,  the adjusted  basis of such property for federal income tax
          purposes,  all as of the Date of Determination.  The Carrying Value of
          any property  shall be adjusted from time to time in  accordance  with
          SECTIONS 3.5(d) AND 3.5(e) and to reflect changes,  additions or other
          adjustments to the Carrying Value for dispositions and acquisitions of
          Partnership properties, as approved by the General Partners.

               (t) "CASH CONTRIBUTION EQUIVALENT" means the amount of additional
          cash equity that would be required by the  Partnership  to achieve the
          same objective, were the credit support not to be provided.

               (u) "CEO" has the meaning ascribed to such term in SECTION 6.2.

               (v) "CERTIFICATE" means the Certificate of Limited Partnership of
          the  Partnership  filed in the  Office  of the  Secretary  of State of
          Delaware.

               (w) "CODE" means the Internal Revenue Code of 1986, as amended.

               (x) "COMMITTED VOLUMES" means volumes of natural gas required for
          the Partnership's  performance of delivery obligations under gas sales
          and purchase contracts in effect at the time.

               (y)  "CONTINUING  DIRECTORS"  means those members of the board of
          directors of the Affected  Shareholder  who are not affiliated with or
          were not  nominated by a New Control Group and who were members of the
          board of directors  prior to the time such New Control Group  acquired
          control of the Affected Shareholder.

               (z) "CONTRIBUTED PROPERTY" means each property or other asset, in
          such form as may be permitted by the Act, but  excluding  cash or cash
          equivalents,  contributed to the Partnership (or deemed contributed to
          the Partnership) on termination and reconstitution thereof pursuant to
          Section  708 of the Code.  Once the  Carrying  Value of a  Contributed
          Property is  adjusted  pursuant  to SECTION  3.5(d) AND  3.5(e),  such
          property shall no longer constitute a Contributed Property,  but shall
          be deemed an Adjusted Property. 


                                       4
<PAGE>

CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)

               (aa)  "CURATIVE  ALLOCATION"  means any  allocation of an item of
          income, gain, deduction,  loss or credit pursuant to the provisions of
          SECTION 5.4.

               (ab) "DATE OF DETERMINATION"  means, as the case may be, the date
          upon which there is a Capital  Contribution of money or other property
          to the Partnership as consideration for an Interest,  a liquidation of
          the  Partnership,  or a  distribution  of money or other property to a
          retiring or continuing  Partner as consideration  for the reduction of
          the Interest of the Partner in the Partnership.

               (ac) "DEADLOCK" has the meaning  ascribed to such term in SECTION
          6.4(a).

               (ad)  "DEBIT OF  RETURN"  means a  reduction  in the  Partnership
          Percentages,  distributions and/or income allocations of a Responsible
          Partner or  Responsible  Partners,  as determined  in accordance  with
          SECTION 3.9.

               (ae) "EARNINGS  THRESHOLD" has the meaning  ascribed to such term
          in SECTION 3.6(a) or 3.7(a), as the case may be.

               (af)  "EFFECTIVE  DATE" has the meaning  ascribed to such term in
          the initial paragraph hereof.

               (ag)  "EFFECTIVE  TAX  RATE"  means  the sum of (i)  the  current
          maximum  marginal  federal  income  tax  corporate  rate  and  (ii) * 
          (stipulated state and local income tax rate) multiplied by 1 minus the
          tax rate in clause (i).

               (ah) "FAIR  MARKET  VALUE"  means  appraised  value  taking  into
          account the effect of the  termination of the Initial  Agreements,  if
          terminated,  on a going  concern  basis and  applying  no  discount or
          premium for  minority or majority  interest.  The  appraisal  shall be
          conducted by Morgan Stanley & Co.  Incorporated  (or if Morgan Stanley
          has a conflict or declines to conduct the  appraisal for a market fee,
          then Merrill  Lynch & Co.), or such other  investment  banking firm as
          the General Partners may agree.

               (ai) "FISCAL  YEAR" means the period  commencing on the Effective
          Date or any subsequent January 1 and ending on the earlier to occur of
          (A) the next  December  31 or (B) the date on which all  assets of the
          Partnership  are   distributed   pursuant  to  SECTION  10.1  and  the
          Certificate has been cancelled pursuant to the Act.

               (aj)  "INDEPENDENT  EVALUATOR"  has the meaning  ascribed to such
          term in SECTION 3.9.

               (ak) "GENERAL  PARTNERS" means Shell GP, Tejas GP, and each other
          general partner admitted as a Partner in the Partnership.

               (al) "INITIAL  AGREEMENTS"  means those  agreements  set forth on
          EXHIBIT B, which are to be executed contemporaneously herewith.

               (am)   "INTEREST"   means  the  interest  of  a  Partner  in  the
          Partnership.


                                       5
<PAGE>


               (an)  "INTEREST  RATE"  means the prime  lending  rate  quoted by
          Citibank,  N.A., to its best  customers for loans having a maturity of
          90 days or less, plus 300 basis points.

               (ao) "LIMITED PARTNERS" means Shell LP1, Shell LP2, Tejas LP1 and
          Tejas LP2 and each other Person who becomes a limited partner pursuant
          to the terms of this Agreement.

               (ap) "MINIMUM NET WORTH" means 10% of the  Partnership's  Capital
          Contributions described in Section 4.03(1) of Rev. Proc. 92-88, 1992-2
          C.B. 496, as amended or otherwise modified.

               (aq) "NET AGREED VALUE" means, (a) in the case of any Contributed
          Property, the Agreed Value of such property reduced by any liabilities
          either assumed by the Partnership  upon such  contribution or to which
          such property is subject when contributed,  and (b) in the case of any
          property   distributed   to  a  Partner   by  the   Partnership,   the
          Partnership's Carrying Value of such property (as adjusted pursuant to
          SECTION 3.5(e) at the time such property is  distributed),  reduced by
          any indebtedness either assumed by such Partner upon such distribution
          or to which such property is subject at the time of  distribution,  in
          either case, as determined under Section 752 of the Code.

               (ar) "NEW CONTROL  GROUP" means any single person or group (other
          than Frederic C.  Hamilton,  Charles C. Gates,  Jay A.  Precourt,  and
          Charles  R.  Crisp,  as to Tejas  Parent,  and  members  of the  Royal
          Dutch/Shell Group of Companies, as to Shell Parent) within the meaning
          of Rule 13d-5 of the  Securities  Exchange  Act of 1934,  as  amended,
          including,  without limitation, any such Person or group that acquires
          such  status  as a  result  of a  purchase  in  foreclosure  or from a
          bankruptcy or reorganization under Chapter 11 of the Bankruptcy Code.

               (as)  "NIAT"  means NIBT,  minus the amount of tax  distributions
          pursuant to SECTION 4.2 in respect of such NIBT.

               (at) "NIBT"  means net income,  before  federal and state  income
          taxes,  of the  Partnership  determined in accordance  with  generally
          accepted accounting principles as applied to the Partnership.

               (au)  "NONRECOURSE  DEDUCTIONS" has the meaning  ascribed to such
          term in Section 1.704-2(b)(1) of the Regulations.

               (av)  "NONRECOURSE  LIABILITY"  has the meaning  ascribed to such
          term in Section 1.704-2(b)(3) of the Regulations.

               (aw) "NON-U.S. SHELL AFFILIATE" means, subject to (c) below, N.V.
          Koninklijke   Nederlandsche  Petroleum  Maatschappij,   a  Netherlands
          company, The "Shell" Transport and Trading Company, p.l.c., an English
          company,  and any company  directly or indirectly  affiliated to these
          two  companies  or  either  of  them,  and  for the  purposes  of this
          definition a particular  company is:


                                       6
<PAGE>


                    (a) "Directly  affiliated"  to a company or companies if the
               latter holds/hold stock representing  fifty-percent (50%) or more
               of the votes exercisable at a general meeting (or its equivalent)
               of the particular company, and

                    (b) "Indirectly  affiliated" to a company or companies ("the
               parent  company or  companies")  if a series of companies  can be
               specified,  beginning  with the parent  company or companies  and
               ending with a particular company, so related that each company of
               the series,  except the parent company or companies,  is directly
               affiliated to one or more companies earlier in the series.

                    (c) This definition of Non-U.S.  Shell  Affiliates shall not
               include  Shell  Parent  or any  company  directly  or  indirectly
               affiliated  to Shell Parent where Shell Parent is taken to be the
               parent company described in (b) above.

               (ax) "OFFICERS" has the meaning  ascribed to such term in SECTION
          6.2(a).

               (ay) "OPTION  INTEREST"  means the Interest  consisting of 16-2/3
          percentage  points of the Partnership  Percentage of the Shell Partner
          Group or such  lesser  number  of  percentage  points  equal to 16-2/3
          multiplied  by the result of 1 minus the  Partnership  Percentages  of
          Additional  Partners.  The Option  Interest  shall  initially  include
          0.16-2/3 percentage points of the Partnership  Percentage of the Shell
          GP and 16.50 percentage points of the Partnership  Percentage of Shell
          LP2  and  Shell  LP1  (in  such   proportion  as  Shell  Parent  shall
          designate),  in each case subject to reduction pursuant to the formula
          in the preceding sentence.

               (az)  "PARTNER  GROUP" means two or more Partners each of whom is
          an Affiliate of each of the others.

               (ba) "PARTNER  NONRECOURSE DEBT" has the meaning ascribed to such
          term in Section 1.704-2(b)(4) of the Regulations.

               (bb) "PARTNER  NONRECOURSE  DEBT MINIMUM GAIN" means that amount,
          with  respect  to  each  Partner   Nonrecourse   Debt,  equal  to  the
          Partnership Minimum Gain that would result if such Partner Nonrecourse
          Debt were treated as a Nonrecourse Liability, determined in accordance
          with the principles of Section 1.704-2(i)(3) of the Regulations.

               (bc) "PARTNER NONRECOURSE  DEDUCTIONS" means any and all items of
          loss, deduction or expenditure (including any expenditure described in
          Sections  705(a)(2)(B)  of the  Code)  that,  in  accordance  with the
          principles of Sections 1.704-2(i)(1)  and (2) of the Regulations,  are
          attributable to a Partner Nonrecourse Debt.

               (bd)  "PARTNERS"  means  the  General  Partners  and the  Limited
          Partners, where no distinction is required by the context in which the
          term is used herein. "Partner" means any one of the Partners.

               (be) "PARTNERSHIP"  means the limited partnership created by this
          Agreement.


                                       7
<PAGE>


               (bf) "PARTNERSHIP ACCOUNTS" has the meaning ascribed to such term
          in SECTION 6.7.

               (bg)  "PARTNERSHIP  PERCENTAGE"  means  the  percentage  share of
          certain  items of  profit  and loss as from  time to time  established
          pursuant to the terms hereof. The initial  Partnership  Percentages of
          the Partners are set forth on EXHIBIT A.

               (bh) "PARTNERSHIP  MINIMUM GAIN" has the meaning ascribed to such
          term in Sections 1.704-2(b)(2) and (d) of the Regulations.

               (bi) "PERCENTAGE  RESET DATE" means January 1, 1998,  except that
          if SECTION 3.7 is made applicable pursuant to SECTION 3.6(c), then the
          Percentage Reset Date shall be January 1, 1999.

               (bj) "PERSON"  means any  individual,  partnership,  corporation,
          limited liability company, trust, or other entity.

               (bk)  "PHYSICAL  CONTRACT"  means any  contract  for the physical
          delivery of energy (including,  without limitation, energy in the form
          of  natural  gas,  natural  gas  liquids  or  electricity)   that  the
          Partnership  reasonably  expects  to  perform  by actual  delivery  of
          product to the counter-party.

               (bl)  "PREFERRED  RETURN" means an amount  payable from NIBT to a
          Responsible  Partner  or  Responsible   Partners,   as  determined  in
          accordance  with SECTION  3.9.  Preferred  Returns  shall be paid PARI
          PASSU with distributions to the Partners unless otherwise specified by
          the Board.

               (bm)  "PRE-RESET  CLOSING DATE RETAINED  EARNINGS  AMOUNT" means,
          with respect to each Partner, the excess of (i) the Partner's share of
          NIBT  (based on its  Partnership  Percentage)  for the period from the
          inception of the Partnership  through the Reset Closing Date over (ii)
          the sum of (A) the  distributions  to such Partner pursuant to SECTION
          4.2 to the extent they relate to such period and (B) all distributions
          to such Partner pursuant to SECTION 4.1.

               (bn) "PROPERTY OR PROPERTY" means all real and personal  property
          acquired by the Partnership and any  improvements  thereto,  and shall
          include both tangible and intangible property.

               (bo) "PURCHASED  INTEREST" has the meaning  ascribed to such term
          in SECTION 3.6(b), 3.6(d), 3.7(b), or 3.7(c), as the case may be.

               (bp) "QUALIFIED  FINANCIAL  INSTITUTIONS" means banks,  insurance
          companies,  investment companies,  mutual funds, investment banks, and
          other recognized financial institutions.

               (bq)  "RECAPTURE   INCOME"  means  any  gain  recognized  by  the
          Partnership  (computed  without regard to any  adjustment  required by
          Section 734 or 743 of the Code)


                                       8
<PAGE>


          upon the  disposition  of any  property  or asset of the  Partnership,
          which gain is  characterized  as ordinary income because it represents
          the  recapture  of  deductions  previously  taken with respect to such
          property or assets.

               (br) "REDETERMINATION  OPTION INTEREST" means that portion of the
          Option Interest of the Shell Partner Group that is subject to purchase
          pursuant to SECTION 3.6(d) or 3.7(c), as the case may be.

               (bs) "REGULATIONS"  means the Income Tax Regulations  promulgated
          under the Code,  as amended  (including  corresponding  provisions  of
          succeeding regulations).

               (bt)  "RESET  CLOSING  DATE"  means  the date on which  the Tejas
          Partner  Group  acquires its  Purchased  Interest or subject  Interest
          under SECTIONS 3.6 OR 3.7, or if there is no such  acquisition,  means
          December 31, 1999.

               (bu) "RESIDUAL GAIN" or "RESIDUAL LOSS" means any item of gain or
          loss, as the case may be, of the  Partnership  recognized  for federal
          income  tax  purposes  resulting  from  a  sale,   exchange  or  other
          disposition  of a Contributed  Property or Adjusted  Property,  to the
          extent  such  item of  gain  is not  allocated  pursuant  to  SECTIONS
          5.6(b)(i)(A) OR 5.6(b)(ii)(A), to eliminate Book-Tax Disparities.

               (bv) "RESPONDENT" means (i) Tejas LP2 where Shell LP1, Shell LP2,
          or a successor to either of their  Interests  is the Selling  Partner,
          (ii) Shell LP2 where Tejas LP1,  Tejas LP2 or a successor to either of
          their Interests is the Selling Partner,  (iii) Tejas GP where Shell GP
          or a successor to its Interest is the Selling  Partner,  (iv) Shell GP
          where Tejas GP or a successor to its Interest is the Selling  Partner,
          (v) Shell LP2 and Tejas LP2 in proportion to the aggregate Partnership
          Percentages of their Partner Group where any other Limited  Partner is
          the Selling  Partner,  and (vi) Shell GP and Tejas GP in proportion to
          their  Partnership  Percentages where any other General Partner is the
          Selling Partner.

               (bw) "RESPONSE" has the meaning  ascribed to such term in SECTION
          8.3(a).

               (bx) "RESPONSIBLE PARTNER" means (i) in the case of additional or
          reduced  volumes  from or  attributable  to any  member  of the  Shell
          Partner  Group,  the one or more Partners from among the Shell Partner
          Group  designated  by  the  Shell  Parent  and  (ii)  in the  case  of
          additional or reduced  volumes from or  attributable  to any member of
          the Tejas Partner Group, the one or more Partners from among the Tejas
          Partner Group designated by the Tejas Parent; provided, that the Shell
          Parent  and the  Tejas  Parent,  as the case may be,  shall  designate
          Partner(s)  having  sufficient  Partnership  Percentages  to more than
          offset any Debit of Return.

               (by) "RESPONSIBLE PARTNER GROUP" means the Shell Partner Group or
          the  Tejas  Partner  Group,  as the case may be,  that is  responsible
          (directly  or  indirectly  through  Affiliates)  for any  increased or
          reduced volumes as described in SECTION 3.9.


                                       9
<PAGE>

CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)


               (bz) "RETAINED  EARNINGS" for any Fiscal Year means the excess of
          NIBT for such Fiscal Year over the distributions  with respect to such
          Fiscal Year.

               (ca)  "SALES  MARGIN"  has the  meaning  ascribed to such term in
          SECTION 3.3(b).

               (cb)  "SELLING  PARTNER"  means the  Partner  defined  as such in
          SECTION 8.3 or 8.4, as the case may be.

               (cc)  "SHAREHOLDER"  has the  meaning  ascribed  to such  term in
          SECTION 8.7.

               (cd)  *

               (ce)  "SHELL  DEFERRED  RETAINED  EARNINGS  AMOUNT"  means,  with
          respect to each Partner that sells a Purchased Interest, the excess of
          (A) that portion of the  Partner's  Pre-Reset  Closing  Date  Retained
          Earnings Amount that is  attributable  to the Purchased  Interest over
          (B) all  distributions to such Partner  thereafter  pursuant to clause
          (ii)(A) of SECTION 4.1.

               (cf)  "SHELL  DEFERRED   DISTRIBUTION  AMOUNT"  means  an  amount
          calculated as of the Reset  Closing  Date,  equal to the excess of (i)
          Shell Partner Group's  Pre-Reset Closing Date Retained Earnings Amount
          on such date over (ii) the  product of (A) the Tejas  Partner  Group's
          Pre-Reset Closing Date Retained Earnings Amount on such date times (B)
          the ratio of the new aggregate  Partnership  Percentages  of the Shell
          Partner  Group  immediately  after the Reset  Closing  Date to the new
          aggregate  Partnership  Percentages of the Tejas Partner Group at such
          time.

               (cg) "SHELL  MAXIMUM"  means a  Partnership  Percentage  equal to
          66-2/3rds  percentage  points  multiplied by the result of 1 minus the
          Partnership Percentage of Additional Partners.

               (ch) "SHELL MINIMUM" means a Partnership  Percentage  equal to 50
          percentage  points multiplied by the result of 1 minus the Partnership
          Percentage of Additional Partners.

               (ci)  "SHELL   PARENT"  means  Shell  Oil  Company,   a  Delaware
          corporation.

               (cj) "SHELL PARTNER  GROUP" means the Shell Parent  together with
          Affiliates of the Shell Parent (other than Non-U.S. Shell Affiliates).

               (ck) "SHELL SUPPLY AGREEMENT" means each and all of those certain
          Gas Sale and Purchase Contracts between Shell Parent and/or any of its
          Affiliates,  as  sellers,  and the  Partnership,  as buyer,  listed as
          Initial Agreements, and any and all renewals, extensions,  amendments,
          and  successors  thereto  and any  marketing  or sales  administration
          agreement  providing  for the economic  benefit of certain gas volumes
          that,  due to  restrictions,  cannot be otherwise  included in a Shell
          Supply Agreement.


                                       10
<PAGE>


               (cl) "SHELL TRUE-UP AMOUNT" has the meaning ascribed to such term
          in SECTION 3.3(b).

               (cm)  "SUBSIDIARY IN THE PARTNERSHIP LINE OF OWNERSHIP" means any
          Affiliate of the Shareholder  which is a Partner in the Partnership or
          is in a direct  ownership  chain between the Shareholder and a Partner
          in the Partnership.

               (cn)  "TAX  AMOUNT"  means  for any  Fiscal  Year or any  portion
          thereof,  the taxable income of the Partnership for the Fiscal Year or
          any portion thereof  (determined under Section 703(a) of the Code with
          items of income,  loss, or deduction under Section 703(a)(1)  included
          in the determination) multiplied by the Effective Tax Rate.

               (co) "TAX DISTRIBUTION" means a distribution  pursuant to SECTION
          4.2.

               (cp) "TAX MATTERS  PARTNER" has the meaning ascribed to such term
          in SECTION 7.3.

               (cq) "TEJAS MAXIMUM" means a Partnership  Percentage  equal to 50
          percentage  points multiplied by the result of 1 minus the Partnership
          Percentage of Additional Partners.

               (cr) "TEJAS  MINIMUM"  means a  Partnership  Percentage  equal to
          33.33  percentage  points  multiplied  by the  result  of 1 minus  the
          Partnership Percentage of Additional Partners.

               (cs)  "TEJAS  PARENT"  means  Tejas Gas  Corporation,  a Delaware
          corporation.

               (ct) "TEJAS PARTNER  GROUP" means the Tejas Parent  together with
          Affiliates of Tejas Parent.

               (cu) "TEJAS SUPPLY AGREEMENT" means each and all of those certain
          Gas Sale and Purchase Contracts between Tejas Parent and/or any of its
          Affiliates,  as  sellers,  and the  Partnership,  as buyer,  listed as
          Initial Agreements, and any and all renewals, extensions,  amendments,
          and successors thereto.

               (cv) "TEJAS TRUE-UP AMOUNT" has the meaning ascribed to such term
          in SECTION 3.3(d).

               (cw) "THIRD PARTY" means any Person other than the Partnership, a
          Partner or an Affiliate of a Partner.

               (cx) "TRANSFER" has the meaning  ascribed to such term in SECTION
          8.1.

               (cy)  "UNREALIZED  GAIN"  attributable to any item of Partnership
          property means, as of any Date of  Determination,  the excess, if any,
          of (a) the fair  market  value of such  property  as of such  date (as
          determined  under  SECTIONS  3.5(d) AND 3.5(e))  over (b) the


                                       11
<PAGE>


          Carrying  Value  of  such  property  as of  such  date  (prior  to any
          adjustment  to be made  pursuant to  SECTIONS  3.5(d) AND 3.5(e) as of
          such date).

               (cz)  "UNREALIZED  LOSS"  attributable to any item of Partnership
          property means, as of any Date of  Determination,  the excess, if any,
          of (a) the Carrying  Value of such  property as of such date (prior to
          any  adjustment to be made pursuant to SECTIONS  3.5(d) AND 3.5(e)) as
          of such date) over (b) the fair  market  value of such  property as of
          such date (as determined under SECTIONS 3.5(d) AND 3.5(e)).

               (da) "U.S." means United States of America.

     1.2 OTHER DEFINED TERMS. Other capitalized terms used in this Agreement and
not defined in SECTION 1.1 shall have the  meanings  indicated  throughout  this
Agreement.

     1.3 CONSTRUCTION. The words "HEREOF," "HEREIN" and "HEREUNDER" and words of
similar  import,  when used in this Agreement shall refer to this Agreement as a
whole  and not to any  particular  provision  of this  Agreement.  Whenever  the
context  requires,  the  gender of all  words  used  herein  shall  include  the
masculine,  feminine and neuter,  and the number of all words shall  include the
singular and plural.

     1.4 REFERENCES. Unless otherwise specified, references in this Agreement to
"SECTIONS,"  "SUBSECTIONS" or "ARTICLES"  refer to the sections,  subsections or
articles in this Agreement.


                                   ARTICLE II

                      FORMATION, NAME, PURPOSES AND OFFICES

     2.1  ORGANIZATION.  The Partners hereby confirm and ratify the organization
and  formation  of the  Partnership  as a limited  partnership  pursuant  to the
provisions  of the Act for the  purposes set forth in SECTION 2.3 below and upon
the terms and conditions set forth in this Agreement.

     2.2  PARTNERSHIP  NAME. The name of the  Partnership  shall be Coral Energy
Resources,  L.P., and all business of the Partnership shall be conducted in such
name or such other name as the Board shall select by unanimous vote.

     2.3  PURPOSES.  The  purposes and nature of the business to be conducted by
the Partnership  shall be the following:  to engage in the buying and selling of
natural gas; to engage in the natural gas derivatives business,  including basis
trading,  futures trading, and the writing of swaps, collars,  options, or other
derivatives  instruments;  the arranging of natural gas transportation and other
related  natural gas  services;  and the  financing  of natural gas  development
projects  and natural  gas  end-use  projects.  The  Partnership  will engage in
activities, similar to above, in electricity and natural gas liquids. All of the
foregoing may be pursued  throughout the United States,  Canada, and Mexico. The
Partnership  may do anything  necessary or  appropriate  to the  foregoing.


                                       12
<PAGE>

CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)



     2.4 REGISTERED  OFFICE;  PRINCIPAL  OFFICE.  The  registered  office of the
Partnership  in the State of Delaware is Corporation  Trust Center,  1209 Orange
Street,  Wilmington,  Delaware 19801,  and the name of the registered  agent for
service of process is The  Corporation  Trust Company.  The Board may change the
registered  office of the  Partnership  to any other  place  within the State of
Delaware  upon  10  days'  written  notice  to  the  Limited  Partners  and  the
preparation and filing of an amendment of the Certificate of Limited Partnership
of the Partnership  reflecting such change, if required.  The principal business
office of the  Partnership  shall be  located  at 909  Fannin  St.,  Suite  700,
Houston,  Texas 77010.  The Partnership may maintain other offices at such other
locations as the Board shall determine from time to time.

     2.5 TERM.  The term of the  Partnership  will  commence  on the filing of a
Certificate of Limited Partnership in the State of Delaware,  and shall continue
until the  earlier  of (i) * ; or (ii) the  winding  up and  liquidation  of the
Partnership  and its business  following an event of dissolution as described in
SECTION  9.1.  By mutual agreement  of the  General  Partners,  the  term of the
Partnership may be extended annually for consecutive one-year terms,  commencing
*.

     2.6 FILINGS.

          (a) The CEO shall take any and all  actions  reasonably  necessary  to
     perfect and maintain the status of the Partnership as a limited partnership
     under  the  laws  of  the  State  of  Delaware  and  any  other  states  or
     jurisdictions in which the Partnership engages in business and otherwise to
     qualify the  Partnership  to engage in business in all such  jurisdictions.
     Subject  to  SECTION  9.1(e),  the  Board  shall  cause  amendments  to the
     Certificate  to be filed  whenever  required  by the Act and/or  such other
     laws.  Such  amendments  may be  executed  by the  Board on  behalf  of the
     Partnership and the Partners.

          (b) Upon the dissolution of the Partnership,  the Board shall promptly
     execute and cause to be filed a certificate of  cancellation  in accordance
     with the Act and other filings  required under the laws of any other states
     or jurisdictions in which the Partnership conducts business.

          (c) The CEO  shall  promptly  deliver  copies of all  filings  made on
     behalf of the Partnership in accordance with this Section to the Partners.

     2.7 INDEPENDENT ACTIVITIES. Except to the extent provided in SECTION 3.9 or
in any other contract or agreement between the Partnership and any Partner, each
Partner and its Affiliates  (including,  for the avoidance of doubt, in the case
of the Shell Partner Group, the Non-U.S. Shell Affiliates) shall be permitted to
engage in any business activity, including any activity that is competitive with
the  Partnership,  without  offering any such  opportunity to the Partnership or
accounting therefor to the Partnership or the other Partners.

     2.8 POWERS.  The Partnership  shall be empowered to do any and all acts and
things necessary,  appropriate,  proper, advisable,  incidental to or convenient
for the furtherance and accomplishment of the purposes and business described in
this ARTICLE II and for the protection and benefit of the Partnership.


                                       13
<PAGE>


                                   ARTICLE III

           PARTNERS' CAPITAL CONTRIBUTIONS AND SHIFTS IN EQUITY SHARES

     3.1 CAPITAL CONTRIBUTIONS. Each Partner hereby commits to contribute to the
Partnership the Capital  Contributions  described herein. Except as set forth in
this  ARTICLE III,  the  Partners  shall not be required to make any  Additional
Capital  Contribution  to the  Partnership.  Except  as  expressly  contemplated
hereby, the obligations of a Partner to make the Capital Contributions described
herein  shall not be  affected  by the  transfer  of all or part of a  Partner's
Interest.

     3.2 CAPITAL CONTRIBUTIONS OF THE PARTNERS.

          (a)  Effective  November  1, 1995,  each  Partner  shall make  initial
     Capital Contributions as follows:

               (i)  Shell GP,  Tejas GP,  Shell  LP2,  and Tejas LP2 shall  each
          contribute, in cash, the respective amount set forth on EXHIBIT A.

               (ii) Shell LP1 shall  contribute  the economic  interest in those
          natural gas  contracts  as set forth on EXHIBIT C hereto,  which shall
          have a Net Agreed Value equal to the amount set forth for Shell LP1 on
          EXHIBIT A subject to SECTION 3.3 below.

               (iii) Tejas LP1 shall contribute the economic  interests in those
          natural gas contracts set forth on EXHIBIT D hereto,  which shall have
          a Net  Agreed  Value  equal to the  amount  set forth for Tejas LP1 on
          EXHIBIT A, subject to SECTION 3.3 below.

          (b) If any Partner  fails to make its  required  contributions  to the
     Partnership  pursuant to paragraph (a) above or it fails (or its Affiliates
     fail) to execute  and  deliver  the Shell  Supply  Agreement  and the Tejas
     Supply  Agreement,  then this  Agreement  and all  agreements  of even date
     herewith relative to the transactions  herein  contemplated may be enforced
     by any other Partner.

     3.3 TRUE-UP OF VALUE OF ECONOMIC INTERESTS CONTRIBUTED.

          (a) Within 30 days after the end of each calendar year ending prior to
     January 1, 2005,  Shell LP1 shall pay to the  Partnership the Shell True-up
     Amount as  determined  pursuant  to SECTION  3.3(b) and  subject to SECTION
     3.3(e).  Such  payment  shall  not  be  treated  as an  Additional  Capital
     Contribution  hereunder  as it is intended  to replace a  shortfall  of the
     actual  value of the assets set forth on EXHIBIT C from the Agreed Value of
     such assets.  The  Carrying  Value of such assets shall be decreased by the
     amount  of any such  payment,  but the  balance  of the  Partner's  Capital
     Account will not be adjusted.

          (b) The "Shell  True-up  Amount"  for any  calendar  year shall be the
     deficiency,  if any,  represented by the result  obtained by subtracting as
     follows: (i) the actual


                                       14
<PAGE>

CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)


          aggregate Sales Margins  received by the Partnership  during such year
          with respect to the contracts  identified on EXHIBIT C, minus (ii) the
          projected  aggregate  Sales  Margins  during such year with respect to
          such  contracts,  set forth on  EXHIBIT  E. As used  herein,  the term
          "Sales  Margins"  means  (i)  the  proceeds  of  sale  derived  by the
          Partnership from the sale of natural gas, minus (ii) the Partnership's
          cost of sales for such natural gas,  including the purchase price paid
          for such  gas,  together  with  costs of  transportation  borne by the
          Partnership  with respect to such gas, but excluding any hedging costs
          associated  with such gas for hedges put into place  after the date of
          this Agreement;  provided that, in computing  "Sales Margins" it shall
          not be necessary to track actual gas molecules  delivered,  but rather
          "Sales  Margins"  shall be  computed  based upon supply from the Shell
          Supply  Agreement that is deemed to be matched with sales to customers
          under the contracts on EXHIBIT E.

          (c) Within 30 days after the end of each calendar year ending prior to
     January 1, 2005,  Tejas LP1 shall pay to the  Partnership the Tejas True-up
     Amount as  determined  pursuant  to SECTION  3.3(d) and  subject to SECTION
     3.3(e).  Such  payment  shall  not  be  treated  as an  Additional  Capital
     Contribution  hereunder  as it is intended  to replace a  shortfall  of the
     actual  value of the assets set forth on EXHIBIT D from the Agreed Value of
     such assets.  The  Carrying  Value of such assets shall be decreased by the
     amount  of any such  payment,  but the  balance  of the  Partner's  Capital
     Account will not be adjusted.

          (d) The "Tejas  True-up  Amount"  for any  calendar  year shall be the
     deficiency,  if any,  represented by the result  obtained by subtracting as
     follows:  (i) * times the actual  aggregate  volumes  sold during such year
     with respect to the  contracts  identified on EXHIBIT D, minus (ii) * times
     the aggregate  volumes of natural gas projected to be sold during such year
     under such contracts as set forth on EXHIBIT F.

          (e) In the event that the Shell  True-up  Amount or the Tejas  True-up
     Amount is a  positive  number as  calculated  for any  calendar  year,  the
     positive balance shall be carried over to the next succeeding calendar year
     to reduce the amount of the Shell True-up  Amount or Tejas True-up  Amount,
     as the case may be, otherwise due for such succeeding calendar year. To the
     extent  that  the  positive  balance  for any  calendar  year is not  fully
     utilized  to offset  true-up  amounts due in the next  succeeding  calendar
     year, then the remaining  unutilized  positive  balance will not be carried
     forward,  but  instead  will be  remitted to Shell LP1 or Tejas LP1, as the
     case may be. Each Partner agrees to treat such positive amount for any year
     as a retained  income  interest  in the  relevant  contracts  and to report
     directly  income  equal to such  positive  number  for any  year.  Any such
     remittance  will not be  treated  as a  distribution  with  respect  to the
     Interest of the  Partner,  or of Retained  Earnings or capital and will not
     directly  affect the Capital  Account of any Partner,  as it is intended to
     correct an excess of the actual value of the assets  described on EXHIBIT C
     or EXHIBIT D, as the case may be, over the Agreed Value of such assets.

          (f) In the event that a Shell True-up  Amount or Tejas True-Up  Amount
     remains  outstanding  and  unpaid  by a  Partner  at  any  time,  then  the
     Partnership  shall have a right of set-off against any amounts from time to
     time distributable to such Partner.


                                       15
<PAGE>

CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)

     Such right shall be in addition to any other rights that may be  available,
     at law or in equity, to the Partnership.

     3.4 ADDITIONAL FUNDING.

          (a) The Board has  directed  the  Officers to  determine  the economic
     costs and benefits  that may be derived from  achieving an * Credit  Rating
     for the Partnership.  The Officers will make a recommendation  to the Board
     regarding whether the Partnership  should seek an * Credit Rating,  and the
     Board, by unanimous vote, shall determine  whether it wishes to obtain an *
     Credit Rating and, if so, whether loans,  Additional Capital Contributions,
     or other sources of funds will be required in order to achieve such rating.

          (b) In  the  event  that  the  Board,  in its  discretion  and  acting
     unanimously,  determines  that  additional  capital  or credit  support  is
     required by the  Partnership  from the Partners (for  example,  to attain a
     desired  credit  rating),  it will be funded  through a combination  of the
     following  mechanisms at the option of the Board: (i) through cash or other
     direct  equity   contributions   from  all  Partners   according  to  their
     Partnership  Percentages,  or (ii) through  revolving credit  facilities or
     other credit  support from Third Parties (such as banks),  or (iii) through
     revolving  credit  facilities or other credit  support from the Partners or
     their  Affiliates.  In the event  that such  funding is made in the form of
     revolving  credit  facilities  or other  committed  credit  support  from a
     Partner,  then the Partner shall be compensated  for such  commitment on an
     annual  basis  for  the  duration  of  that  support  by the  payment  of a
     commitment  fee. The annual  commitment  fee will either be a  commercially
     determined  rate (such as might be required by a Third Party  bank),  or an
     annual  return based on the Cash  Contribution  Equivalent  of these credit
     facilities.  In  the  event  that  the  Partnership  draws  on  the  credit
     facilities provided by a Partner,  then the Partner shall be paid an annual
     interest charge  calculated by reference to commercial  rates for a loan of
     that character for so long as the borrowing continues.

          (c) Nothing in this SECTION 3.4 shall create any rights,  remedies, or
     claims in favor of any Third Party, liquidator, bankruptcy court, receiver,
     bankruptcy  trustee,  or  other  Person,   (other  than  the  Board  acting
     unanimously).

          (d) If any Partner  fails to  contribute  timely all or any portion of
     any  monetary  sum that it has agreed to  contribute  in respect of Capital
     Contributions   pursuant  to  the  provisions  of  this  SECTION  3.4,  the
     Partnership may exercise, by fifteen (15) days prior written notice to such
     Partner (the "Delinquent Partner"), any one or more of the following rights
     or remedies:

               (i) Taking such action as the Board or any General  Partner deems
          appropriate  to  obtain  payment  by the  Delinquent  Partner  of that
          portion of its agreed  contribution that is in default,  together with
          interest  thereon  at the  Interest  Rate  from  the  date  that  such
          contribution was due until the date that such contribution is made, at
          the cost and expense of the Delinquent Partner;


                                       16
<PAGE>


               (ii)  Permitting  those  Partners  that  desire  to  do  so  (the
          "Non-Delinquent Partners") to advance that portion of the contribution
          that is in default, with the following results:

                    (A) The sum thus  advanced  shall be determined to be a loan
               from the Non-Delinquent  Partners to the Delinquent Partner and a
               contribution  of such sum to the  Partnership  by the  Delinquent
               Partner pursuant to this SECTION 3.4,

                    (B) The  principal  balance  of such  loan  and all  accrued
               unpaid  interest  thereon  shall be due  payable in whole  within
               thirty days after written demand  therefore has been given to the
               Delinquent Partner by the Non-Delinquent Partners,

                    (C) The loan shall bear interest at the Interest Rate,  from
               the date that the loan was made  until  the date that such  loan,
               together  with all  interest  accrued  thereon,  is repaid to the
               Non-Delinquent Partners,

                    (D)  All  distributions  from  the  Partnership  that  would
               otherwise be made to the Delinquent  Partner are hereby  assigned
               by the Delinquent Partner to the Non-Delinquent  Partner (whether
               before or after  dissolution of the  Partnership)  until the loan
               and all interest  accrued thereon have been repaid in full to the
               Non-Delinquent  Partners  (with all such  payments  being applied
               first to interest earned and unpaid and then to principal), and

                    (E) The  Non-Delinquent  Partners  shall have the right,  in
               addition  to the  other  rights  and  remedies  granted  to  them
               pursuant  to this  Agreement  or  available  to them at law or in
               equity, to take such action as the  Non-Delinquent  Partners deem
               appropriate to obtain  payment by the  Delinquent  Partner of the
               principal  balance  of such  loan  and  all  accrued  and  unpaid
               interest  thereon,  at the cost  and  expense  of the  Delinquent
               Partner.

     3.5 CAPITAL ACCOUNTS.

          (a) The Partnership shall maintain for each Partner owning an Interest
     a separate Capital Account with respect to such Interest in accordance with
     the rules of Section  1.704-1(b)(2)(iv)  of the  Regulations.  Such Capital
     Account  shall be  increased  by (i) the cash amount or Net Agreed Value of
     all Capital  Contributions  made to the  Partnership  with  respect to such
     Interest  pursuant  to this  Agreement  and (ii) all  items of  Partnership
     income and gain  computed in accordance  with SECTION  3.5(b) and allocated
     with  respect to such  Interest  pursuant to SECTIONS  5.1 THROUGH 5.5, and
     decreased  by (x) the amount of cash or Net Agreed  Value of all actual and
     deemed distributions of cash or property made with respect to such Interest
     pursuant to this Agreement and (y) all items of  Partnership  deduction and
     loss computed in accordance  with SECTION 3.5(b) and allocated with respect
     to such Interest pursuant to SECTIONS 5.1 THROUGH 5.5.


                                       17
<PAGE>


          (b) For purposes of computing the amount of any item of income,  gain,
     loss or deduction to be reflected in the Partners'  Capital  Accounts,  the
     determination, recognition and classification of any such item shall be the
     same as its  determination,  recognition  and  classification  for  federal
     income  tax  purposes  (including,   without  limitation,   any  method  of
     depreciation,  cost  recovery  or  amortization  used  for  that  purpose),
     PROVIDED, that:

               (i) All fees and other  expenses  incurred by the  Partnership to
          promote  the sale of (or to  sell) an  Interest  that can  neither  be
          deducted nor amortized  under Section 709 of the Code, if any,  shall,
          for purposes of Capital Account maintenance,  be treated as an item of
          deduction  at the time such fees and other  expenses  are incurred and
          shall be allocated among the Partners pursuant to SECTIONS 5.1 THROUGH
          5.5.

               (ii) Except as otherwise provided in Section 1.704-1(b)(2)(iv)(m)
          of the Regulations, the computation of all items of income, gain, loss
          and  deduction  shall be made  without  regard to any  election  under
          Section 754 of the Code which may be made by the  Partnership  and, as
          to those items  described in Section  705(a)(1)(B)  or 705(a)(2)(B) of
          the  Code,  without  regard  to the  fact  that  such  items  are  not
          includable  in gross income or are neither  currently  deductible  nor
          capitalized for federal income tax purposes.

               (iii)  Any  income,  gain or  loss  attributable  to the  taxable
          disposition of any Partnership  property shall be determined as if the
          adjusted  basis of such property as of such date of  disposition  were
          equal in amount to the  Partnership's  Carrying  Value with respect to
          such property as of such date.

               (iv) In accordance with the requirements of Section 704(b) of the
          Code, any deductions for  depreciation,  cost recovery or amortization
          attributable to any Contributed Property shall be determined as if the
          adjusted  basis of such  property  on the date it was  acquired by the
          Partnership  were equal to the Agreed Value of such property.  Upon an
          adjustment  pursuant to SECTION  3.5(d) to the  Carrying  Value of any
          Partnership  property  subject  to  depreciation,   cost  recovery  or
          amortization,  any  further  deductions  for such  depreciation,  cost
          recovery  or  amortization  attributable  to such  property  shall  be
          determined (A) as if the adjusted basis of such property were equal to
          the  Carrying  Value  of  such  property  immediately  following  such
          adjustment  and (B) using a rate of  depreciation,  cost  recovery  or
          amortization  derived  from the same  method and useful  life (or,  if
          applicable,  the  remaining  useful  life) as is applied  for  federal
          income tax purposes;  PROVIDED, HOWEVER, that, if the asset has a zero
          adjusted  basis for federal  income tax purposes,  depreciation,  cost
          recovery or  amortization  deductions  shall be  determined  using any
          reasonable method that the Board may adopt.

          (c) A transferee of an Interest shall succeed to a pro rata portion of
     the  Capital  Account  of  the  transferor  relating  to  the  Interest  so
     transferred,  unless  otherwise  provided in SECTIONS  3.6(f) AND 3.7(e) of
     this  Agreement.  If,  however,  the transfer  causes a


                                       18
<PAGE>


     termination of the Partnership under Section  708(b)(1)(B) of the Code, the
     Partnership's  properties  shall be  deemed  to have  been  distributed  in
     liquidation of the Partnership to the Partners (including any transferee of
     an  Interest  that is a party to the  transfer  causing  such  termination)
     pursuant  to  SECTION   10.1  and   recontributed   by  such   Partners  in
     reconstitution of the Partnership.  Any such deemed  distribution  shall be
     treated as an actual distribution for purposes of this SECTION 3.5. In such
     event, the Carrying Values of the Partnership  properties shall be adjusted
     immediately prior to such deemed  distribution  pursuant to SECTION 3.5(e),
     and such Carrying  Values shall then  constitute  the Agreed Values of such
     properties upon such deemed contribution to the reconstituted  Partnership.
     The Capital Accounts of such reconstituted  Partnership shall be maintained
     in accordance with the principles of this SECTION 3.5.

          (d) Consistent with the provisions of Section  1.704-1(b)(2)(iv)(f) of
     the  Regulations,  on an  issuance  of  additional  Interests  for  cash or
     Contributed Property, the Capital Accounts of all Partners and the Carrying
     Value of all  Partnership  properties  immediately  prior to such  issuance
     shall be adjusted  upward or downward  to reflect  any  Unrealized  Gain or
     Unrealized Loss  attributable to such  Partnership  properties,  as if such
     Unrealized Gain or Unrealized Loss had been recognized on an actual sale of
     each  such  property  immediately  prior  to such  issuance  and  had  been
     allocated to the Partners at such time. In determining such Unrealized Gain
     or Unrealized  Loss, the aggregate cash amount and fair market value of all
     Partnership   assets   (including,   without   limitation,   cash  or  cash
     equivalents)  immediately  prior to the  issuance of  additional  Interests
     shall be determined by the Board using such reasonable  method of valuation
     as it may adopt.

          (e)  In   accordance   with   Section   1.704-1(b)(2)(iv)(f)   of  the
     Regulations,  immediately  prior to any actual or deemed  distribution to a
     Partner of any Partnership property (other than a distribution of cash that
     is not in redemption or retirement of an Interest), the Capital Accounts of
     all Partners and the Carrying Value of all Partnership  properties shall be
     adjusted  upward or downward to reflect any  Unrealized  Gain or Unrealized
     Loss  attributable to such  Partnership  properties,  as if such Unrealized
     Gain or Unrealized  Loss had been  recognized on a sale of such  properties
     immediately  prior to such  distribution  for an  amount  equal to its fair
     market value.  Any Unrealized Gain or Unrealized Loss  attributable to such
     property  shall be  allocated  in the same  manner  as it would  have  been
     allocated  had it been  realized in an actual  sale.  In  determining  such
     Unrealized  Gain or  Unrealized  Loss the  aggregate  cash  amount and fair
     market value of all Partnership assets (including, without limitation, cash
     or  cash  equivalents)   immediately  prior  to  a  distribution  shall  be
     determined  and  allocated  among  the  assets  by  the  Board  using  such
     reasonable method of valuation as it may adopt. The Partners agree that the
     distribution   contemplated   pursuant   to   SECTION   4.1(ii)(A)   is   a
     disproportionate  distribution  of  retained  earnings  of the  Partnership
     intended to effect a reduction of the distributee's  interest therein so as
     to cause the aggregate  Adjusted  Capital Account  balances of each Partner
     Group to be in  proportion  to their  Partnership  Percentages  after  such
     distributions  are  complete.  At the time of any  purchase  of a Purchased
     Interest  under  SECTION  3.6 or 3.7,  the Capital  Account  balance of the
     transferee of such Purchased Interest shall be adjusted,  if necessary,  to
     achieve such result at the time of its purchase.


                                       19
<PAGE>

CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)

          (f) In the event that the Partnership's  items of income,  gain, loss,
     or  deduction  are  adjusted  by  any  taxing  authority  by  reason  of  a
     transaction   between  the   Partnership   and  a  member  of  a  group  of
     organizations  under common  ownership or control (of which the Partnership
     is also a member),  including  but not limited to  adjustments  pursuant to
     Section 482 of the Code or any similar  provisions  under  state,  local or
     foreign law (any such adjustment  referred to herein as a "TAX ADJUSTMENT")
     and  such  adjustment  results  in a  deemed  Capital  Contribution  to the
     Partnership by any Partner or a deemed  distribution  by the Partnership to
     any Partner,  (i) the Capital Account of any Partner that is deemed to make
     such Capital  Contribution  shall be increased by the amount of such deemed
     Capital  Contribution  and (ii) the Capital  Account of any Partner that is
     deemed to receive such a deemed distribution shall be reduced by the amount
     of such  distribution.  In general,  the  adjustments  to Capital  Accounts
     pursuant to this SECTION  3.5(f) are  intended to cause,  after taking into
     account  the  adjustments  to Capital  Accounts  pursuant  to this  SECTION
     3.5(f),  each  Partner's  balance  in his  Capital  Account,  to the extent
     possible, to be equal to the balance such Capital Account would have had if
     no Tax Adjustment had occurred.

     3.6 1998 EQUITY SHIFT.

          (a) On or before November 15, 1998, the Board,  based upon ten months'
     actual  results and  estimates  for the  remaining  two months of the year,
     shall estimate and certify to the Partners  whether or not Partnership NIBT
     (plus  amortization of the Carrying Value of the  Contributed  Property and
     any True-up Amount due the Partnership pursuant to SECTION 3.3(b) OR 3.3(d)
     for the Fiscal Year  beginning on January 1, 1998) is estimated to exceed *
     million (which is * of the initial Business Plan) for Fiscal Year 1998 (the
     "Earnings Threshold"). If the Board fails to make such a certification, the
     Accountants of the Partnership shall make their estimate of NIBT for Fiscal
     Year 1998  (plus  amortization  of the  Carrying  Value of the  Contributed
     Property  and any True-up  Amount due the  Partnership  pursuant to SECTION
     3.3(b) OR 3.3(d) for the Fiscal  Year  beginning  on January 1, 1998) on or
     before December 1, 1998.

          (b) If the  Board  or  the  Accountants  estimate  that  the  Earnings
     Threshold  will be met for Fiscal Year 1998,  then the Tejas  Partner Group
     will have the option for 30 days after the  delivery  of such  estimate  to
     deliver  notice to the Shell Partner Group of its intent to purchase all or
     part of the Option  Interest of the Shell Partner Group.  Such notice shall
     designate  the  portion  of  the  Option  Interest  to  be  purchased  (the
     "Purchased Interest") and the time and place of closing,  which shall occur
     within 90 days after delivery of such notice.  Upon the timely  delivery of
     the purchase notice, the Shell Partner Group shall become obligated to sell
     the Purchased  Interest and the Tejas Partner Group shall become  obligated
     to purchase the  Purchased  Interest at the price  determined in accordance
     with SECTION 3.6(e). The portion of the Option Interest that is an Interest
     of a General  Partner  shall be purchased by Tejas GP and the balance shall
     be purchased by Tejas LP2 (or its designated Affiliate).

          (c) If the  Board  or  the  Accountants  estimate  that  the  Earnings
     Threshold  will not be met for Fiscal Year 1998,  the Tejas  Partner  Group
     shall have the  election of either (i)  electing to exercise  the option to
     purchase a specified portion or all of the 


                                       20
<PAGE>

CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)


     Redetermination Option Interest pursuant to SECTION 3.6(d), (ii) having the
     provisions of SECTION 3.7 apply,  or (iii)  postponing  its election  until
     delivery of, and basing its election upon, the audited financial statements
     of the Partnership,  rather than estimates of the Board or the Accountants.
     If the Tejas  Partner Group has not given notice to the Shell Partner Group
     pursuant  to this  SECTION  3.6(c)  within  30 days  after the Board or the
     Accountants  have delivered the notice of their estimate (or within 30 days
     after  delivery of the audited  financial  statements  if the Tejas Partner
     Group has elected to postpone its  decision),  then the Tejas Partner Group
     shall be deemed to have  elected  to have the  provisions  of  SECTION  3.7
     apply.

          (d) Upon the timely  election of the Tejas Partner Group to purchase a
     specified portion of the  Redetermination  Option Interest pursuant to this
     SECTION 3.6(d), then the Shell Partner Group shall become obligated to sell
     the Purchased Interest (as defined below) and the Tejas Partner Group shall
     become obligated to purchase the Purchased Interest. Such notice shall also
     designate  the time and place of closing,  which shall occur within 90 days
     after delivery of such notice.

     The  "Redetermination  Option Interest" shall be the excess, if any, of the
Shell Maximum over the Shell Redetermination  Partnership  Percentage,  which is
determined pursuant to the following formula (the "Redetermination Formula"):

    Shell Redetermination Partnership Percentage =     VS             x 100
                                                  --------------
                                                    Vs+(Vt*  *  )

    Where Vs = 1998   average  daily  volumes,  without   double  counting   any
               volumes,  of (a)  natural  gas sold by the  Partnership  to Third
               Parties under  contracts  contributed to the Partnership by Shell
               LP1,  (b) natural gas tendered  for sale by Shell  Partner  Group
               under the Shell Supply  Agreement  and not  otherwise  counted as
               volumes  under clause (a)  preceding,  and (c) Shell  natural gas
               sold by Shell  Partner  Group  where the  Partnership  receives a
               brokerage  commission;  provided  that,  if,  prior to the  Reset
               Closing   Date,   *    adds  its  volumes  to  the  Shell  Supply
               Agreement  for  the  remaining   term  thereof,   then  the  1998
               annualized amount of such volumes shall be added to Vs.

    Where Vt = 1998  average  daily  volumes,  without   double   counting   any
               volumes,  of (a)  natural  gas sold by the  Partnership  to Third
               Parties under  contracts  contributed to the Partnership by Tejas
               LP1, and (b) natural gas tendered for sale by Tejas Partner Group
               under the Tejas Supply  Agreement  and not  otherwise  counted as
               volumes under clause (a)  preceding,  and (c) natural gas sold by
               Tejas  Partner Group where the  Partnership  receives a brokerage
               commission.

Volumes for the Redetermination  Formula will be measured in Mmbtu's, based upon
ten months'  actual  volumes and  estimates  of the volumes for the  remaining 2
months,  as


                                       21
<PAGE>

CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)

determined  by the  Officers  and  approved  by the Board for the Fiscal Year of
redetermination. If the Officers fails to estimate volumes or the Board fails to
approve  such  estimates,   then  Arthur  Andersen  L.L.P.   and/or  such  other
accountants  as the General  Partners may select shall estimate such volumes for
purposes of the Redetermination Formula.

     Notwithstanding the application of the above formula, in no event shall the
Redetermination Option Interest exceed the Option Interest.

     The portion of the Redetermination Option Interest that is specified by the
Tejas Partner  Group in the election to have this SECTION  3.6(d) apply shall be
the "Purchased Interest" for purposes of this SECTION 3.6(d).

          (e) The purchase  price for the Purchased  Interest  shall be equal to
     (i) the portion of the amount of the Capital  Contributions  of the selling
     member of the Shell Partner Group  attributable to the Purchased  Interest,
     plus (ii) the Capital  Charge with  respect to such  Capital  Contributions
     calculated from the date the selling member of the Shell Partner Group made
     each Capital  Contribution  to the Reset Closing Date, plus (iii) an amount
     equal to (x) a Capital  Charge,  accruing  from the end of the month earned
     through the Reset Closing Date, on (y) the Retained  Earnings  attributable
     to the Purchased  Interest for periods prior to the Percentage  Reset Date,
     minus  (iv) the NIAT  attributable  to the  Purchased  Interest  from,  and
     including,  January 1, 1998, through the Reset Closing Date. The portion of
     the Purchased  Interest  that is an Interest of a General  Partner shall be
     purchased  by Tejas GP and the balance  shall be purchased by Tejas LP2 (or
     its designated Affiliate).

          (f) Upon its acquisition of the Purchased  Interest in accordance with
     this  Section,  the Tejas  Partner  Group will  receive that portion of the
     Shell Partner Group's Capital Account  relating to the Purchased  Interest,
     except that the Shell Partner Group shall retain the portion of its Capital
     Account equal to the Shell Deferred Retained Earnings Amount.

     3.7 1999 EQUITY SHIFT.

          (a) If pursuant to SECTION  3.6(c) the Tejas Partner Group has elected
     to have SECTION 3.7 apply, then, on or before November 15, 1999, the Board,
     based upon ten months'  actual  results and estimates for the remaining two
     months of the year,  shall estimate and certify to the Partners  whether or
     not  Partnership  NIBT  (plus  amortization  of the  Carrying  Value of the
     Contributed Property and any True-up Amount due the Partnership pursuant to
     SECTION  3.3(b) OR 3.3(d) for the Fiscal Year beginning on January 1, 1999)
     is estimated to exceed * million (which is * of the initial  Business Plan)
     for Fiscal Year 1999 (the "Earnings Threshold"). If the Board fails to make
     such a certification,  the Accountants of the Partnership  shall make their
     estimate of NIBT for Fiscal Year 1999 (plus  amortization  of the  Carrying
     Value  of  the  Contributed   Property  and  any  True-up  Amount  due  the
     Partnership  pursuant  to  SECTION  3.3(b) OR 3.3(d)  for the  Fiscal  Year
     beginning on January 1, 1999) on or before December 1, 1999.


                                       22
<PAGE>

CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)

          (b) If the  Board  or  the  Accountants  estimate  that  the  Earnings
     Threshold  will be met for Fiscal Year 1999,  then the Tejas  Partner Group
     will have the  option for 30 days to  deliver  notice to the Shell  Partner
     Group of its intent to purchase  all or part of the Option  Interest of the
     Shell Partner Group.  Such notice shall designate the portion of the Option
     Interest to be purchased (the "Purchased  Interest") and the time and place
     of closing, which shall occur within 90 days after delivery of such notice.
     Upon the timely  delivery of the purchase  notice,  the Shell Partner Group
     shall become obligated to sell the Purchased Interest and the Tejas Partner
     Group shall  become  obligated  to purchase  the  Purchased  Interest.  The
     portion of the Option  Interest  that is an Interest  of a General  Partner
     shall be purchased by Tejas GP and the balance  shall be purchased by Tejas
     LP2 (or its designated Affiliate).

          (c) If the  Board  or  the  Accountants  estimate  that  the  Earnings
     Threshold  will not be met for Fiscal Year 1999,  the Tejas  Partner  Group
     will  either  (i)  deliver  notice,  within 30 days  after the date of such
     estimate,  to the  Shell  Partner  Group of its  intention  to  purchase  a
     specified  portion of the  "Redetermination  Option  Interest" of the Shell
     Partner  Group or (ii) postpone its decision to purchase all or a specified
     portion of the "Redetermination Option Interest" of the Shell Partner Group
     until 30 days after  receipt  of,  and base its  election  on, the  audited
     financial statements of the Partnership, rather than upon such estimate. In
     the event of such  postponement,  notice of its decision  shall be given by
     the Tejas  Partner  Group  within 30 days after  delivery  of such  audited
     financial statements.  Upon the timely delivery of either such notice, then
     the Shell  Partner  Group  shall  become  obligated  to sell the  Purchased
     Interest  (as  defined  below) and the Tejas  Partner  Group  shall  become
     obligated  to purchase  the  Purchased  Interest.  Such  notice  shall also
     designate  the time and place of closing,  which shall occur within 90 days
     after delivery of such notice.

          The "Redetermination  Option Interest" shall be the excess, if any, of
     the Shell Maximum over the Shell  Redetermination  Partnership  Percentage,
     which is determined pursuant to the following formula (the "Redetermination
     Formula"):

      Shell Redetermination Partnership Percentage =     VS             x 100
                                                   --------------
                                                    Vs+(Vt*  *  )

      Where Vs  =   1999  average daily  volumes, without  double  counting  any
                    volumes, of (a) natural gas sold by the Partnership to Third
                    Parties under  contracts  contributed to the  Partnership by
                    Shell  LP1,  (b)  natural  gas  tendered  for  sale by Shell
                    Partner  Group  under the  Shell  Supply  Agreement  and not
                    otherwise counted as volumes under clause (a) preceding, and
                    (c) Shell  natural gas sold by Shell Partner Group where the
                    Partnership receives a brokerage commission;  provided that,
                    if,  prior  to  the  Reset  Closing   Date,   *   adds   its
                    volumes to the Shell Supply Agreement for the remaining term
                    thereof,  then the 1999  annualized  amount of such  volumes
                    shall be added to Vs.


                                       23
<PAGE>


      Where Vt  =   1999  average  daily  volumes,   without   double   counting
                    any volumes,  of (a) natural gas sold by the  Partnership to
                    Third Parties under contracts contributed to the Partnership
                    by Tejas LP1, and (b) natural gas tendered for sale by Tejas
                    Partner  Group  under the  Tejas  Supply  Agreement  and not
                    otherwise counted as volumes under clause (a) preceding, and
                    (c)  natural  gas  sold by Tejas  Partner  Group  where  the
                    Partnership receives a brokerage commission.

         Volumes for the  Redetermination  Formula  will be measured in Mmbtu's,
         based upon ten months'  actual volumes and estimates of the volumes for
         the  remaining 2 months,  as determined by the Officers and approved by
         the Board for the Fiscal Year of redetermination. If the Officers fails
         to estimate volumes or the Board fails to approve such estimates,  then
         Arthur  Andersen  L.L.P.  or  such  other  accountants  as the  General
         Partners  may select  shall  estimate  such volumes for purposes of the
         Redetermination Formula.

          Notwithstanding  the  application  of the above  formula,  in no event
     shall the Redetermination Option Interest exceed the Option Interest.

          The portion of the  Redetermination  Option Interest that is specified
     by the Tejas  Partner  Group in the  election to have this  SECTION  3.7(c)
     apply  shall be the  "Purchased  Interest"  for  purposes  of this  SECTION
     3.7(c).

          (d) The purchase  price for the Purchased  Interest  shall be equal to
     (i) the portion of the amount of the Capital  Contributions  of the selling
     member of the Shell Partner Group  attributable to the Purchased  Interest,
     plus (ii) the Capital  Charge with  respect to such  Capital  Contributions
     calculated from the date the selling member of the Shell Partner Group made
     each Capital  Contribution  to the Reset Closing Date, plus (iii) an amount
     equal to (x) a Capital  Charge,  accruing  from the end of the month earned
     through the Reset Closing Date, on (y) the Retained  Earnings  attributable
     to the Purchased  Interest for periods prior to the Percentage  Reset Date,
     minus  (iv) the NIAT  attributable  to the  Purchased  Interest  from,  and
     including,  January 1, 1999, through the Reset Closing Date. The portion of
     the Purchased  Interest  that is an Interest of a General  Partner shall be
     purchased  by Tejas GP and the balance  shall be purchased by Tejas LP2 (or
     its designated Affiliate).

          (e) Upon its acquisition of the Purchased  Interest in accordance with
     this  Section,  the Tejas  Partner  Group will  receive that portion of the
     Shell Partner Group's Capital Account  relating to the Purchased  Interest,
     except that the Shell Partner Group shall retain the portion of its Capital
     Account equal to the Shell Deferred Retained Earnings Amount.

     [3.8 intentionally left blank.]


                                       24
<PAGE>

CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)


     3.9 PARTNERSHIP  PREFERRED RETURN  DETERMINATION  PROMPTED BY UNANTICIPATED
CHANGE IN VOLUME.

     (a) In the event that, after the Reset Closing Date, either:

          (i)  volumes  tendered  for sale to the  Partnership  by a Partner  or
     Affiliate of a Partner,  or markets available to the Partnership,  increase
     by more than * million cubic feet per day ( * mmcfd) over the amounts of Vs
     or Vt (as  defined  in Section  3.6 or 3.7),  as the case may be, as at the
     Reset  Closing  Date,  due  either  to a major  acquisition  or  series  of
     acquisitions  during a 12 month  period by the Shell  Partner  Group or the
     Tejas Partner Group, as  appropriate,  of gas producing  properties,  a gas
     producer, a gas marketer, a gas pipeline or a pipeline company; or

          (ii) * first becomes a party to the Shell Supply Agreement as a Seller
     thereunder after the Reset Closing Date, and adds all or substantially  all
     of its natural gas to the volumes supplied to the Partnership;

     Then the  Responsible  Partner Group shall make those volumes  available to
the Partnership upon the terms and conditions of the Shell Supply Agreement,  in
the case of the Shell Partner Group, or the Tejas Supply Agreement,  in the case
of the Tejas Partner Group, in either case,  subject to any limitations on doing
so in existing gas sales and purchase  contracts in effect prior to  acquisition
of such volumes by the Responsible  Partner Group;  provided,  that such volumes
shall be made available to the Partnership, as described above, immediately upon
expiration or termination of the conflicting  gas sales and purchase  contracts.
The Officers will  recommend an appropriate  Preferred  Return to compensate the
Responsible  Partner,  disregarding  in valuing  the  Preferred  Return that the
Responsible  Partner is required  by this  Section to market its gas through the
Partnership.  The Preferred  Return will be payable from  Partnership  NIBT, and
shall be in addition to the Responsible Partner's Partnership Percentage. Within
10 days after determination of the Preferred Return, the Officers shall give the
Board notice of the  Preferred  Return and the Board shall approve or reject the
Preferred Return within 30 days after receipt of such notice.  If no approval or
rejection  is  communicated,  the  Preferred  Return will be deemed to have been
rejected. If the Board rejects the Preferred Return recommended by the Officers,
then the Board shall engage an independent investment banking firm or accounting
firm,  acceptable  to  all  Board  members  (the  "Independent  Evaluator"),  at
Partnership  expense, to value the contribution of the additional volumes to the
Partnership  (disregarding  in valuing the Preferred Return that the Responsible
Partner is required by this Section to market its gas through the  Partnership),
to determine a Preferred Return as compensation to the Responsible  Partner, and
to  present  its  valuation  to the  Board,  which  shall  thereupon  become the
Preferred  Return and shall be binding  upon the  Partnership,  the  Responsible
Partner, and all other Partners.

     (b) In the event that,  after the Reset  Closing  Date,  the Shell  Partner
Group or Tejas Partner Group reduces the natural gas available for sale by it to
or through the  Partnership  under the terms of the Shell  Supply  Agreement  or
Tejas Supply Agreement,


                                       25
<PAGE>

CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)


as the case may be, by more than a cumulative amount of * million cubic feet per
day ( * mmcfd) below the amounts of Vs or Vt (as defined in Section 3.6 or 3.7),
as the case may be, as at the Reset Closing Date,  due either to a major sale or
series  of sales by the  Shell  Partner  Group or the Tejas  Partner  Group,  as
appropriate, of gas producing properties or of gas pipelines;

     Then at the time that such  cumulative  amount of * mmcfd has been  reached
and each time that an  additional  cumulative  amount of * mmcfd of reduction is
reached thereafter,  to the extent the Partnership has not been, or will not be,
adequately  reimbursed  for the loss of such  volumes  through the  operation of
SECTION 3.3, the Officers will  recommend an  appropriate  Debit of Return.  The
Debit of Return will reduce the  Responsible  Partner's  share of  distributions
pursuant to ARTICLE IV AND ARTICLE X that  otherwise  would be made with respect
to such Responsible  Partner's Partnership  Percentage and Interests.  Within 10
days after  determination  of the Debit of Return,  the Officers  shall give the
Board  notice of the Debit of Return and the Board  shall  approve or reject the
Debit of Return within 30 days after  receipt of such notice.  If no approval or
rejection  is  communicated,  the  Debit of  Return  will be deemed to have been
rejected.  If the Board rejects the Debit of Return recommended by the Officers,
then the Board shall engage an Independent Evaluator, at Partnership expense, to
value the  reduction  of volumes to the  Partnership,  to  determine  a Debit of
Return as compensation  to the  Partnership and the other Partner Group,  and to
present its  valuation of the  appropriate  Debit of Return to the Board,  which
shall  thereupon  become  the Debit of  Return  and  shall be  binding  upon the
Partnership, the Responsible Partner, and all other Partners.

     (c) All  volumes of natural  gas before  the Reset  Closing  Date,  and the
volumes of natural gas below the threshold  described in SECTION 3.9(a)(i) after
the Reset Closing Date, coming under ownership or control of Tejas Partner Group
or Shell Partner Group shall be made available by them to the  Partnership  upon
the terms and conditions of the Shell Supply  Agreement,  in the case of volumes
and contracts made  available from the Shell Partner Group,  or the Tejas Supply
Agreement,  in the case of volumes and contracts  made  available from the Tejas
Partner Group.

     (d) In the event that a Third Party  desires to be admitted as a Partner of
the Partnership, or desires to share in the benefits or risks of the Partnership
by  becoming a partner of a Partner or by forming a  strategic  alliance  with a
Partner,  then the Partners will consider the economic  benefit to be derived by
the  admission of such new Partner or such desire to  participate  indirectly in
the Partnership.  The Partners,  upon request of any General  Partner,  will use
their best efforts to agree upon terms and  conditions  for the admission of the
new  Partner  or  to  redetermine  the  Partners'  Partnership  Percentages,  as
appropriate,  if such  admission  or  redetermination  is in the  best  economic
interests of all Partners.


                                       26
<PAGE>


     3.10 OTHER MATTERS.

     (a) Except as otherwise provided in ARTICLE IV AND SECTION 10.1, no Partner
shall   demand  or  receive  a  return  of  its  Capital   Contribution.   Under
circumstances  requiring a return of any Capital Contribution,  no Partner shall
have  the  right  to  receive  property  other  than  cash,  except  as  may  be
specifically provided herein or as agreed to by the Board.

     (b) No Partner  shall  receive  any  interest  with  respect to its Capital
Contribution  or its  Capital  Account,  except as  otherwise  provided  in this
Agreement.

     (c) The  Limited  Partners  shall not be  personally  liable for the debts,
negative account  balances,  liabilities,  contracts or any other obligations of
the Partnership.  The General Partners shall not have any personal liability for
the repayment of the Capital Contribution of any Limited Partner.


                                   ARTICLE IV

                                  DISTRIBUTIONS

     4.1 DISTRIBUTIONS.  Except as otherwise provided in SECTION 4.2 and SECTION
10.1  (relating to  distributions  upon  liquidation  of the  Partnership),  the
Partnership  shall  distribute  cash only at such  times and in such  amounts as
determined by the Board. All distributions pursuant to this SECTION 4.1 shall be
made as follows:

               (i) If a Reset  Closing Date has not yet occurred to the Partners
          in proportion to their Partnership Percentages;

               (ii) After any Reset  Closing  Date,  in the  following  order of
          priority;

                    (A)  first,  to  members  of  the  Shell  Partner  Group  in
               proportion  to  and to  the  extent  of  their  respective  Shell
               Deferred Distribution Amount;

                    (B)  second,  to the  Partners in  proportion  to and to the
               extent  of  their  respective  Pre-Reset  Closing  Date  Retained
               Earnings Amounts; and

                    (C)  third,   to  the  Partners  in   proportion   to  their
               Partnership Percentages.

Notwithstanding  anything  to the  contrary in this  Agreement,  after any Reset
Closing Date, the members of the Board  appointed by the Shell GP shall have the
exclusive  authority  to  determine  the amount of and  timing of  distributions
pursuant to Section 4.1 until all  distributions  contemplated by clause (ii)(A)
of SECTION 4.1 have been made and may cause the  Partnership  to borrow funds at
commercially  available  rates and terms in  amounts  sufficient  to enable  the
Partnership to make all distributions under clause (ii)(A) of SECTION 4.1.


                                       27
<PAGE>


     4.2 TAX DISTRIBUTIONS.

          (a)  CURRENT  TAX  LIABILITY.  Prior to any  distribution  being  made
     pursuant to SECTION 4.1,  during each Fiscal Year,  the  Partnership  shall
     make  distributions  to each  Partner in  proportion  to their  Partnership
     Percentages at the time and in an aggregate amount equal to the Tax Amount.
     Such  distributions  shall be made from time to time during the Fiscal Year
     (or during the following  January) as the Board determines would correspond
     to the estimated  tax payment  obligations  of the Partners.  The Board may
     designate a  distribution  made during January as a tax  distribution  with
     respect to the prior Fiscal Year. The Board may delay,  reduce or eliminate
     a Tax Distribution. During a Fiscal Year, so long as Tax Distributions with
     respect to such Fiscal  Year equal to the Tax Amount  with  respect to such
     Fiscal Year have not been distributed, no other distributions shall be made
     during such Fiscal Year (or the following January) pursuant to SECTION 4.1.

          (b) INCREASED TAX LIABILITY UNDER TAX CONTESTS.  If the taxable income
     of the Partnership is increased by any taxing authority and the Partnership
     settles or receives a  determination  as defined in Section  1313(a) of the
     Code,  the  Board  shall  make an  additional  Tax  Distribution  under the
     procedures  described in SECTION 4.2(A) using the increased  taxable income
     of the Partnership to calculate the Tax Amount for this distribution.


                                    ARTICLE V

                                   ALLOCATIONS

     5.1 ALLOCATIONS OF PROFITS.  After giving effect to the special allocations
set forth in  SECTIONS  5.3 AND 5.4,  net income and gain for any Fiscal Year or
portion  thereof shall be allocated  among the Partners in accordance with their
Partnership Percentages in effect during such period.

     5.2 ALLOCATIONS OF LOSSES.

          (a) Subject to the limitation of SECTION  5.2(b),  after giving effect
     to the special  allocations set forth in SECTIONS 5.3 AND 5.4, net loss for
     any Fiscal Year or portion thereof shall be allocated among the Partners in
     accordance with their Partnership Percentages in effect during such period.

          (b) The losses  allocated  pursuant to SECTION 5.2(a) shall not exceed
     the maximum amount of losses that can be so allocated  without  causing any
     Limited Partner to have an Adjusted  Capital  Account  Deficit  (determined
     after all cash  distributions for the Fiscal Year) at the end of the Fiscal
     Year for  which  the  allocation  relates.  All  losses  in  excess  of the
     limitation  set forth in the preceding  sentence  shall be allocated  among
     those  Limited  Partners  that will not have an  Adjusted  Capital  Account
     Deficit  at the end of the  Fiscal  Year in the  ratio  of  their  relative
     Partnership Interests. In any Fiscal Year in which all the Limited Partners
     will have an Adjusted Capital Account Deficit,  all


                                       28
<PAGE>


     losses in excess of the limitations described in the first two sentences of
     this SECTION 5.2(b) shall be allocated (i) to the General Partner,  if any,
     that is a member of such Limited Partner's Partner Group or (ii) otherwise,
     to the General Partners in proportion to their Partnership Percentages.

     5.3 SPECIAL ALLOCATIONS. The following special allocations shall be made in
the following order:

          (a) MINIMUM GAIN CHARGEBACK.  Notwithstanding  any other provisions of
     this  ARTICLE  V,  except  as  provided  in  Section   1.704-2(f)   of  the
     Regulations,  if there is a net decrease in Partnership Minimum Gain during
     any Fiscal Year,  each  Partner  shall be  allocated  items of  Partnership
     income and gain for such year (and, if necessary,  subsequent  years) in an
     amount equal to such  Partner's  share of the net  decrease in  Partnership
     Minimum  Gain,  determined  in  accordance  with Section  1.704-2(g) of the
     Regulations. Allocations pursuant to the previous sentence shall be made in
     proportion  to the  respective  amounts  required to be  allocated  to each
     Partner pursuant thereto.  The items to be so allocated shall be determined
     in  accordance  with  Sections   1.704-2(f)(6)  and  1.704-2(j)(2)  of  the
     Regulations.  This  SECTION  5.3(a) is  intended to comply with the minimum
     gain  chargeback  requirement in Section  1.704-2(f) of the Regulations and
     shall be interpreted consistently therewith.

          (b)   CHARGEBACK   OF   PARTNER   NONRECOURSE   DEBT   MINIMUM   GAIN.
     Notwithstanding  the other provisions of this ARTICLE V (other than SECTION
     5.3(a), except as provided in Section 1.704-2(i)(4) of the Regulations), if
     there is a net decrease in Partner Nonrecourse Debt Minimum Gain during any
     Partnership  Fiscal Year,  any Partner with a share of Partner  Nonrecourse
     Debt Minimum Gain,  determined in accordance with Section  1.704-2(i)(5) of
     the  Regulations,  shall be allocated items of Partnership  income and gain
     for such period (and if necessary,  subsequent  periods) in an amount equal
     to such  Partner's  share of the net decrease in Partner  Nonrecourse  Debt
     Minimum Gain attributable to such Partner  Nonrecourse Debt,  determined in
     accordance  with  Section  1.704-2(i)(4)  of the  Regulations.  Allocations
     pursuant  to the  previous  sentence  shall  be made in  proportion  to the
     respective  amounts  required  to be  allocated  to each  Partner  pursuant
     thereto.  The items to be so allocated  shall be  determined  in accordance
     with Sections  1.704-2(i)(4)  and  1.704-2(j)(2) of the  Regulations.  This
     SECTION  5.3(b) is  intended to comply  with the  minimum  gain  chargeback
     requirement  in  Section  1.704-2(i)(4)  of the  Regulations  and  shall be
     interpreted consistently therewith.

          (c)  QUALIFIED  INCOME  OFFSET.  In  the  event  any  Limited  Partner
     unexpectedly  receives  any  adjustments,   allocations,  or  distributions
     described in Sections 1.704- 1(b)(2)(ii)(d)(4), 1.704-1(b)(2)(ii)(d)(5), or
     1.704-1(b)(2)(ii)(d)(6) of the Regulations, items of Partnership income and
     gain shall be specially allocated to each such Limited Partner in an amount
     and  manner  sufficient  to  eliminate,  to  the  extent  required  by  the
     Regulations,  the Adjusted  Capital Account Deficit of such Limited Partner
     as  quickly as  possible,  provided  that an  allocation  pursuant  to this
     SECTION  5.3(c)  shall be made only if and to the extent that such  Limited
     Partner  would have an Adjusted  Capital  Account  Deficit  after all other
     allocations provided for in this ARTICLE V have been tentatively made as if
     this SECTION  5.3(c) were not in this  Agreement.  This  SECTION  5.3(c) is


                                       29
<PAGE>


     intended to constitute a "qualified  income  offset"  within the meaning of
     Section  1.704-1(b)(2)(ii)  of  the  Regulations,  and shall be interpreted
     consistently therewith.

          (d) GROSS INCOME  ALLOCATION.  In the event any Limited  Partner has a
     deficit Capital Account at the end of any Fiscal Year which is in excess of
     the sum of (i) the amount  such  Limited  Partner is  obligated  to restore
     pursuant  to any  provision  of this  Agreement  and (ii) the  amount  such
     Limited  Partner  is deemed to be  obligated  to  restore  pursuant  to the
     penultimate  sentences of Section  1.704-2(g)(1)  and  1.704-2(i)(5) of the
     Regulations,  each such Limited Partner shall be specially  allocated items
     of  Partnership  income and gain in the amount of such excess as quickly as
     possible, provided that an allocation pursuant to this SECTION 5.3(d) shall
     be made only if and to the extent that such  Limited  Partner  would have a
     deficit Capital  Account in excess of such sum after all other  allocations
     provided for in this ARTICLE V have been made as if SECTION 5.3(c) and this
     SECTION 5.3(d) were not in this Agreement.

          (e) NONRECOURSE DEDUCTIONS. Nonrecourse Deductions for any Fiscal Year
     shall be  allocated to the Partners in  accordance  with their  Partnership
     Percentages.

          (f) PARTNER NONRECOURSE DEDUCTIONS. Any Partner Nonrecourse Deductions
     for any Fiscal Year or other  period  shall be  specially  allocated to the
     Partner  who bears the  economic  risk of loss with  respect to the Partner
     Nonrecourse  Debt  to  which  such  Partner   Nonrecourse   Deductions  are
     attributable in accordance with Section 1.704-2(i)(1) of the Regulations.

          (g)  SECTION  754  ADJUSTMENTS.  To the  extent an  adjustment  to the
     adjusted tax basis of any Partnership asset pursuant to Code Section 734(b)
     or   Code   Section    743(b)   is    required,    pursuant   to   Sections
     1.704-1(b)(2)(iv)(m)(2) or (4) of the Regulations, to be taken into account
     in  determining  Capital  Accounts,  the amount of such  adjustment  to the
     Capital  Accounts  shall be treated  as an item of gain (if the  adjustment
     increases the basis of the asset) or loss (if the adjustment decreases such
     basis) and such gain or loss shall be  specially  allocated to the Partners
     in a manner  consistent with the manner in which their Capital Accounts are
     required to be adjusted pursuant to such Section of the Regulations.

          (h) INCOME/DEDUCTION ALLOCATIONS. In the event that a net deduction or
     loss is imputed to the  Partnership as a result of the imputation of income
     or gain to any Partner by any taxing authority, such resulting deduction or
     loss shall be allocated  among the Partners in the same  proportion  as the
     Partners are required to recognize the corresponding income or gain.


                                       30
<PAGE>


     5.4 CURATIVE  ALLOCATIONS.  The allocations  set forth in SECTIONS  5.2(b),
5.3(a),  5.3(b),  5.3(c),  5.3(d),  5.3(e),  5.3(f) AND 5.3(g) (the  "REGULATORY
ALLOCATIONS")   are  intended  to  comply  with  certain   requirements  of  the
Regulations.  It is the intent of the Partners that, to the extent possible, all
Regulatory  Allocations shall be offset either with other Regulatory Allocations
or with special allocations of other items of Partnership income,  gain, loss or
deduction  pursuant to this SECTION 5.4.  Therefore,  notwithstanding  any other
provision  of this  ARTICLE V (other  than the  Regulatory  Allocations  and the
following sentence), the Board shall make such offsetting special allocations of
Partnership  income,  gain,  loss or deduction in whatever  manner it determines
appropriate so that, after such offsetting  allocations are made, each Partner's
Capital Account balance is, to the extent possible, equal to the Capital Account
balance such Partner would have had if the Regulatory  Allocations were not part
of this Agreement and all Partnership items were allocated  pursuant to SECTIONS
5.1, 5.2(a),  5.3(h) AND 5.5.  Notwithstanding the previous sentence,  the Board
shall not be required to make special  allocations  of income or gain under this
SECTION 5.4 to offset  Regulatory  Allocations  previously  made under  SECTIONS
5.3(e) AND 5.3(f).

     5.5 OTHER ALLOCATION RULES.

          (a) In the event  the  Partnership  Percentages  of the  Partners  are
     adjusted during a Fiscal Year, the  allocations  required by this Article V
     shall be made for such Fiscal Year by allocating the items of income, gain,
     loss, and deduction of the Partnership based on the Partnership Percentages
     in effect from time to time  during the year.  Absent an  agreement  of the
     Board to the contrary, the Partnership shall utilize the interim closing of
     the books  method to  apportion  the items of income to the periods of time
     before and after a change in the Partnership Percentages of the Partners.

          (b) All allocations to the Partners  pursuant to this ARTICLE V shall,
     except as otherwise expressly provided, be divided among them in proportion
     to their Partnership Percentages.

          (c)  Except as  otherwise  provided  in this  Agreement,  all items of
     Partnership income,  gain, loss,  deduction,  and any other allocations not
     otherwise  provided  for shall be divided  among the  Partners  in the same
     proportions as they share profits or losses,  as the case may be.  However,
     notwithstanding any other provision of this Agreement, the General Partners
     shall be  allocated  not less  than 1%,  in the  aggregate  of each item of
     Partnership  income gain, loss,  deduction or credit,  except to the extent
     such an allocation would be contrary to the provisions of Section 704(b) or
     (c) of the Code and related Regulations.

          (d) The  Partners  are aware of the  income  tax  consequences  of the
     allocations  made by this  ARTICLE  V and  hereby  agree to be bound by the
     provisions  of this  ARTICLE V in  reporting  their  shares of  Partnership
     income and loss for income tax purposes.


                                       31
<PAGE>


          (e) Solely for purposes of determining a Partner's proportionate share
     of the  "excess  nonrecourse  liabilities"  of the  Partnership  within the
     meaning  of   Section  1.752-3(a)(3)  of  the  Regulations,  the  Partners'
     interests in  Partnership  profits are in proportion  to their  Partnership
     Percentages.

          (f) To the extent permitted by Sections  1.704-2(h) and  1.704-2(i)(6)
     of the  Regulations,  the Board shall  endeavor to treat  distributions  as
     having been made from the proceeds of a Nonrecourse  Liability or a Partner
     Nonrecourse  Debt only to the extent that any such  distribution  would not
     cause or  increase  an  Adjusted  Capital  Account  Deficit for any Limited
     Partner.

     5.6 ALLOCATIONS FOR TAX PURPOSES.

          (a)  Except as  otherwise  provided  herein,  for  federal  income tax
     purposes,  each item of income, gain, loss and deduction shall be allocated
     among the  Partners  in the same manner as its  correlative  item of "book"
     income,  gain,  loss or  deduction  is  allocated  pursuant to SECTIONS 5.1
     THROUGH 5.5.

          (b) In an attempt to eliminate Book-Tax Disparities  attributable to a
     Contributed  Property or Adjusted  Property,  items of income,  gain, loss,
     depreciation,  amortization and cost recovery deductions shall be allocated
     for federal income tax purposes among the Partners as follows:

               (i)  (A)  In the  case  of a  Contributed  Property,  such  items
          attributable  thereto  shall be  allocated  among the  Partners in the
          manner  provided  under  Section  704(c) of the Code that  takes  into
          account the  variation  between the Agreed  Value of such  Contributed
          Property and its adjusted basis at the time of  contribution;  and (B)
          except  as  otherwise  provided  in  SECTION  5.6(b)(iv),  any item of
          Residual Gain or Residual Loss attributable to a Contributed  Property
          shall be  allocated  among  the  Partners  in the same  manner  as its
          correlative  item of  "book"  gain or loss is  allocated  pursuant  to
          SECTIONS 5.1 THROUGH 5.5.

               (ii) (A) In the case of an  Adjusted  Property,  such items shall
          (1) FIRST, be allocated among the Partners in a manner consistent with
          the  principles of Section 704(c) of the Code to take into account the
          Unrealized Gain or Unrealized  Loss  attributable to such property and
          the allocations  thereof pursuant to SECTION 3.5(d) OR 3.5(e), and (2)
          SECOND,  in the event  such  property  was  originally  a  Contributed
          Property,  be allocated among the Partners in a manner consistent with
          SECTION  5.6(b)(i);  and (B) except as  otherwise  provided in SECTION
          5.6(b)(iv), any item of Residual Gain or Residual Loss attributable to
          an Adjusted Property shall be allocated among the Partners in the same
          manner as its  correlative  item of "book"  gain or loss is  allocated
          pursuant to SECTIONS 5.1 THROUGH 5.5. For purposes of this  provision,
          consistent with the allocation of  depreciation,  amortization or cost
          recovery of the Carrying  Value of  Partnership  property  pursuant to
          SECTION  5.3(g) to the Partner whose  Capital  Account was adjusted to
          reflect  the  Net  Agreed  Value  of  a  Contributed   Property,   the
          depreciation,  amortization or cost recovery  deductions  computed for
          federal


                                       32
<PAGE>


          income  tax  purposes  shall be  allocated  in the same  manner as its
          correlative item of "book" depreciation, amortization or cost recovery
          deduction.

               (iii) Except as  otherwise  provided in SECTION  5.6(b)(iv),  all
          other items of income,  gain,  loss and  deduction  shall be allocated
          among the  Partners  in the same manner as their  correlative  item of
          "book" gain or loss is allocated pursuant to SECTIONS 5.1 THROUGH 5.5.

               (iv) Any  items of  income,  gain,  loss or  deduction  otherwise
          allocable  under SECTION  5.6(a),  5.6(b)(ii) OR  5.6(b)(iii),  at the
          election of the Board,  shall be subject to  allocation  in any manner
          allowed under Section 1.704-3 of the  Regulations  that is designed to
          eliminate,  to the maximum extent possible,  Book-Tax Disparities in a
          Contributed Property or Adjusted Property otherwise resulting from the
          application of the "ceiling"  limitation  (under Section 704(c) of the
          Code or Section 704(c)  principles) to the allocations  provided under
          SECTION 5.6(b)(i)(A) OR 5.6(b)(ii)(A).

          (c) Any gain  allocated to the Partners upon the sale or other taxable
     disposition of any Partnership  asset shall, to the extent possible,  after
     taking into account  other  required  allocations  of gain pursuant to this
     SECTION 5.6, be  characterized  as Recapture Income in the same proportions
     and to the same extent as such Partners (or their predecessors in interest)
     have been  allocated any deductions  directly or indirectly  giving rise to
     the treatment of such gains as Recapture Income.

          (d) All items of income,  gain, loss,  deduction and credit recognized
     by the  Partnership  for federal  income tax purposes and  allocated to the
     Partners in  accordance  with the  provisions  hereof  shall be  determined
     without  regard to any election  under Section 754 of the Code which may be
     made by the Partnership;  PROVIDED,  HOWEVER,  that such allocations,  once
     made,  shall be adjusted as necessary or  appropriate  to take into account
     those  adjustments  permitted  or required  by Sections  734 and 743 of the
     Code.


                                   ARTICLE VI

                          MANAGEMENT OF THE PARTNERSHIP

     6.1 BOARD.

          (a) Except as  specifically  delegated  in SECTIONS  6.2 AND 6.3 or as
     otherwise  expressly set forth herein,  the  management  and control of the
     business and affairs of the  Partnership  shall be exclusively  vested in a
     four person  governing  board (the  "Board")  the members of which shall be
     appointed,  removed and replaced as provided  herein.  The Shell GP and the
     Tejas GP shall each  designate  two  persons  as members of the Board.  The
     first  Board  members,  to serve  until  their  successors  have  been duly
     appointed,  shall be  Charles  R. Crisp  (appointed  by Tejas GP),  Jack E.
     Little  (appointed by Shell GP), Jay A.  Precourt  (appointed by Tejas GP),
     and P. G.  Turberville  (appointed by Shell GP).


                                       33
<PAGE>

     Either of the Shell GP or the Tejas GP may remove any of its  designees  at
     any time and replace such member pursuant to the second preceding sentence.

          (b) If the CEO is an  employee  or former  employee of a Partner or an
     Affiliate of a Partner, the General Partner by whom (or by whose Affiliate)
     the CEO was not most  recently  employed,  shall  designate a member of the
     Board to act as Chairman of the Board. Otherwise, the Chairman of the Board
     shall be elected by the Board.  The initial  Chairman of the Board shall be
     Jay A.  Precourt  (appointed  by Tejas) and the  initial CEO shall be Murry
     Gerber.

          (c) Regular meetings of the Board shall be held at least quarterly and
     shall be called and scheduled by the Chairman at least thirty calendar days
     in advance  thereof.  Special meetings of the Board may be held at any time
     upon the call of the  Chairman,  the CEO,  or any two Board  members  on at
     least  two  business  days  notice,  unless  such  notice  is waived by all
     members. The member(s) or CEO calling the meeting shall give notice to each
     other member by facsimile  transmission  sent to the  facsimile  number for
     such notice that has been given by such  member.  A quorum  shall exist for
     any meeting if at least three members of the Board are in  attendance.  Any
     or all members may attend the meeting  telephonically.  Risk  positions and
     controls will be on the agenda of each Board  meeting,  if requested by any
     member of the Board.

          (d) Except where otherwise  expressly provided in this Agreement,  the
     Board may take action by the affirmative  vote of a majority of the members
     present  at a  meeting.  A  member  of the  Board  absent  from  a  meeting
     automatically  shall be deemed to have given his proxy to the other  member
     of the Board designated by the same General  Partner,  to vote on behalf of
     the absent  member.  The Board shall have the sole and  exclusive  right to
     manage the business of the  Partnership and shall when acting in accordance
     with this Agreement have all of the rights and powers that may be possessed
     by a general  partner  under the Act.  Members of the Board shall carry out
     the  purposes  and  business of the  Partnership  in  accordance  with this
     Agreement;  devote to the  Partnership's  business  such time as reasonably
     shall be required;  supervise  performance of Officers of the  Partnership;
     and  conduct  the affairs of the  Partnership  in the best  interest of the
     Partnership and the Partners. The Board shall at least annually approve and
     adopt an updated  Business  Plan.  Such Business Plan shall be the basis of
     Partnership  operations  for the  following 12 months and will be used as a
     basis  for  measuring  executive   performance  and  determining  executive
     compensation. In lieu of acting at a properly called meeting, the Board may
     act by unanimous written consent of all of its members.

          (e) The  Partnership  shall  reimburse  members of the Board for their
     out-of-pocket expenses incurred in connection with their duties as a member
     of the Board.  The members of the Board may receive such  compensation  for
     their  service  as a member of the Board,  as the  General  Partners  shall
     determine from time to time.

          (f) In  addition  to the  powers  now or  hereafter  granted a general
     partner of a limited  partnership under applicable law or which are granted
     to the Board  under any  other  provision  of this  Agreement,  the  Board,
     subject to SECTION  6.3,  shall  have full


                                       34
<PAGE>


     power and  authority  to do all things and on such terms as it, in its sole
     discretion,  may deem  necessary or  appropriate to conduct the business of
     the  Partnership,  to exercise all powers,  and to effectuate the purposes,
     set forth in ARTICLE II, including without limitation:

               (i) the making of any  expenditures,  the lending or borrowing of
          money,  the  assumption  or guarantee  of, or other  contracting  for,
          indebtedness  and other  liabilities,  the  issuance of  evidences  of
          indebtedness  and  the  incurring  of any  other  obligations  and the
          securing  of  same  by  mortgage,  deed  of  trust  or  other  lien or
          encumbrance;

               (ii)   the   disposition,    mortgage,    pledge,    encumbrance,
          hypothecation  or  exchange  of  any  or  all  of  the  assets  of the
          Partnership or the merger or other combination of the Partnership with
          or into  another  Person (the  matters  described  in this clause (ii)
          being subject,  however, to any prior approval that may be required by
          SECTION 6.3);

               (iii) the making of any material change in any agreement  between
          the Partnership and a Partner or Affiliate of a Partner;

               (iv) the approval of the annual budget together with construction
          and operating budgets;

               (v) the  purchase,  lease or other  acquisition  of  property  or
          purchase   of   services  in  an  amount  in  excess  of  prior  Board
          authorizations;

               (vi) the selection of accountants and auditors;

               (vii) the  adoption  of  material  accounting  and tax  policies,
          procedures and principles;

               (viii)  the  making of any  borrowings  in excess of prior  Board
          authorizations;

               (ix) the making of any material changes to the form of employment
          agreement;

               (x) the making of any material  changes to any  employee  benefit
          plan;

               (xi) the  determining  of the amount  and  timing of  Partnership
          distributions;

               (xii)  the  making  of any  filing  for  bankruptcy  following  a
          winding-up or dissolution of the  Partnership  approved as provided in
          SECTION 6.3;

               (xiii) the making of any material public announcements;


                                       35
<PAGE>


               (xiv)  the  modification  or  establishment  of  risk  management
          policies;

               (xv) the admission of new Partners  pursuant to the  requirements
          of SECTIONS 8.2, 8.3 and 8.4;

               (xvi) the  request of any  Additional  Capital  Contributions  in
          accordance with SECTION 3.4;

               (xvii) the  selection  and  dismissal  of  employees  and agents,
          outside  attorneys,  accountants,   consultants  and  contractors  and
          determination  of their  compensation and other terms of employment or
          hiring;

               (xviii) the formation of, or  acquisition  of an interest in, and
          the  contribution  of  property  to,  any  further  limited or general
          partnerships, joint ventures, corporations or other relationships;

               (xix) the  institution  of (r)  policies  for the  protection  of
          confidential  information,   (s)  business  conduct  guidelines,   (t)
          non-compete   provisions  with  its  key  employees,   (u)  employment
          contracts  with key  employees,  and (v) key person  insurance for key
          employees;

               (xx) the institution of employee  retirement  plans,  and welfare
          benefits plans, including medical, dental, and disability insurance;

               (xxi)  the  indemnification  of any  Person  by  the  Partnership
          against liabilities and contingencies to the extent permitted by law;

               (xxii) the purchase,  sale or other acquisition or disposition of
          Interests;

               (xxiii) the authorization of the Initial  Agreements on behalf of
          the Partnership;

               (xxiv) the  authorization  and approval of contracts for the sale
          or  purchase of natural  gas,  electricity,  or natural  gas  liquids,
          having a term in excess of five years or for the sale or  purchase  of
          natural gas in excess of 100 million cubic feet per day or requiring a
          guarantee  pursuant to SECTION 12.1 (except  renewals or extensions of
          contracts previously guaranteed); and

               (xxv) the determination of the economic  requirement for a credit
          rating to meet the ongoing needs of the Partnership.

          (g) Notwithstanding the foregoing,  in the case of dispute,  potential
     dispute,  negotiation,  or  renegotiation  between the  Partnership and any
     General  Partner or Affiliate of a General  Partner,  or in the case of any
     notice to be given,  or option,  right of first refusal,  or other right or
     privilege to be exercised by the  Partnership  under any agreement  between
     the  Partnership  and any General Partner or Affiliate of a General Partner
     (including, without limitation, the decision of the Partnership to retire a
     Partner's


                                       36
<PAGE>


     Interest under SECTION 8.5),  then those members of the Board not appointed
     by such General Partner shall  exclusively have all powers of the Board and
     the General Partners to cause the Partnership to initiate,  pursue,  settle
     such dispute,  to be given such notice,  to exercise such option,  right of
     first refusal,  or other right or privilege,  or to waive any rights of the
     Partnership against or amend any agreement with such General Partner or its
     Affiliate or otherwise act in such matter on behalf of the Partnership.

     6.2 OFFICERS.

          (a) The Partnership shall have employees or agents who are denominated
     as  Officers  (including,  but not limited  to, a Chief  Executive  Officer
     ("CEO"), a Chief Financial  Officer,  a Head of Risk Management,  a Head of
     Trading and Head of  Marketing),  as the Board may  designate  from time to
     time (the "OFFICERS").  The CEO shall annually update the Business Plan and
     submit it to the Board for  comment,  revision and  approval.  The Officers
     will establish internal financial  procedures and bookkeeping  practices to
     conform with bookkeeping  guidelines  established in consultation  with the
     Board.

          (b) The Officers shall be responsible for  implementing  the decisions
     of the Board and for conducting the ordinary and usual business and affairs
     of the  Partnership,  including,  subject to the policies  and  limitations
     established by the Board:

               (i) the making of tax, regulatory and other filings, or rendering
          of periodic or other reports to  governmental or other agencies having
          jurisdiction over the business or assets of the Partnership;

               (ii) the  acquisition or disposition of assets of the Partnership
          in the ordinary course of its business;

               (iii)  the  use of the  assets  of  the  Partnership  (including,
          without limitation,  the financing of the conduct of the operations of
          the  Partnership,  the  lending  of  funds to  other  Persons  and the
          repayment of obligations of the Partnership);

               (iv) the negotiation, execution and performance of any contracts,
          conveyances  or  other  instruments  in  the  ordinary  course  of the
          Partnership's  business,  subject  to prior  approval  by the Board of
          contracts  for the sale or purchase of natural  gas,  electricity,  or
          natural gas liquids,  having a term in excess of five years or for the
          sale or purchase  of natural  gas in excess of 100 million  cubic feet
          per day or  requiring a guarantee  pursuant  to SECTION  12.1  (except
          renewals or extensions of contracts previously guaranteed);

               (v) the  maintenance of insurance for the benefit of the Partners
          and the Partnership; and

               (vi)  the  control  of  any  matters  affecting  the  rights  and
          obligations of the Partnership,  including,  without  limitation,  the
          bringing and  defending  of actions


                                       37
<PAGE>


          at  law  or in  equity  and  otherwise  engaging  in  the  conduct  of
          litigation and the incurring of legal expense and settlement of claims
          and litigation up to $500,000 in amount.

          (c) The  Officers  shall be entitled to receive for their  services to
     the  Partnership  such  compensation as may be determined by the Board from
     time to time, such compensation to be paid by the Partnership. The Officers
     shall at all times be subject to the  supervision  and control of the Board
     and shall conform to policies and programs  established  by the Board,  and
     the scope of the Officers'  authority shall be limited to such policies and
     programs.  The acts of the Officers shall bind the Partnership  when within
     the scope of the authority of such Officers. Except as otherwise authorized
     by the Board,  no other Person shall have  authority to bind or act for, or
     assume any obligations or  responsibilities  on behalf of, the Partnership.
     The Officers  shall keep the Board informed as to all matters of concern to
     the Partnership.

     6.3 POWERS RESERVED TO GENERAL PARTNERS.  Notwithstanding  SECTION 6.1, the
Board shall not have the authority to do any of the following  without the prior
written consent of all of the General Partners:

               (i) do any act in contravention of this Agreement;

               (ii) make an agreement  on behalf of or bind any Partner,  except
          to the  extent a General  Partner,  in its  capacity  as such,  may be
          liable to a creditor of the Partnership by operation of law;

               (iii) dispose of the goodwill of the Partnership;

               (iv)  cause the  performance  of any act that would  subject  any
          Limited Partner to liability as a general partner;

               (v)  become a party to any  merger,  consolidation,  or any other
          business combination or change of control;

               (vi) take any act that would cause the winding up or  dissolution
          of the Partnership;

               (vii)  make  a  material  change  to  the   Partnership's   scope
          (including any expansion beyond Mexico, Canada or the United States of
          America), or strategic direction as set forth in SECTION 2.3; or

               (viii) admit any new Partner,  except as contemplated by SECTIONS
          8.2, 8.3 and 8.4 of this Agreement.


                                       38
<PAGE>

CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)

     6.4 RESOLUTION OF DEADLOCK.

          (a) If any matter  presented to the Board or the General  Partners for
     action has been considered by a meeting of the Board or by a meeting of the
     General  Partners  and no  resolution  has been  carried at such meeting in
     relation to the matter,  and such matter is still unresolved within 30 days
     from the date of such  meeting  despite  any  intervention  by the  General
     Partners,  whether in a General Partner's meeting or otherwise, then such a
     situation shall be termed a "Deadlock."

          (b) If a Deadlock  has  occurred  and not been  resolved,  any Partner
     Group can give notice to each other Partner Group of its desire to have the
     provisions of this SECTION 6.4 apply.  Within seven days of the delivery of
     such notice,  each General  Partner shall cause its appointee or appointees
     on the  Board to  prepare  and  circulate  to the other  General  Partner a
     memorandum  or other form of  statement  setting  out its  position  on the
     matter in dispute and its reasons for  adopting  such  position.  Each such
     memorandum  shall be  considered  by a senior  member of the  management of
     Shell GP and of Tejas GP  respectively  nominated for the purpose who shall
     use their respective reasonable endeavors to develop together and recommend
     a solution  to the  General  Partners  to resolve  the  Deadlock.  If these
     management  representatives  reach  agreement  upon  a  resolution  of  the
     Deadlock,  they  shall  prepare a form of  resolution  to be placed  before
     meetings of the Board or of the General  Partners  as  appropriate  and the
     General Partners shall use their respective  reasonable endeavors to ensure
     that such resolutions, if adopted, are promptly carried into effect. If the
     management  representatives are unable to reach agreement on a satisfactory
     resolution  of the issue  creating  the  Deadlock,  the  Partnership  shall
     continue to operate as if the matter in dispute had never been raised.

          (c) In the event that,  after exhaustion of the efforts to resolve the
     Deadlock under SECTION 6.4(b),  a Deadlock still persists for more than six
     months  regarding the failure of the Board or the General Partners to agree
     upon (i) a proposal by either the Shell  Partner Group or the Tejas Partner
     Group to file for  bankruptcy  of the  Partnership  or (ii) a  proposal  by
     either the Shell  Partner  Group or the Tejas Partner Group to dissolve the
     Partnership,  then, in either such event, the Deadlock shall be resolved as
     provided in SECTION 6.4(e) below.

          (d) *


                                       39
<PAGE>

CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)

          (e) *

          (f) In the event that the Requesting Partner Group sells its Interests
     pursuant to Section  6.4(e),  then the Requesting  Partner Group, by notice
     not less than 10 Business  Days before such sale,  shall have the option to
     terminate the Shell Supply Agreement or Tejas Supply Agreement, as the case
     may be, to which it or its affiliates are parties as a "Seller" thereunder,
     as to natural gas volumes that are not Committed Volumes.  The Shell Supply
     Agreement or Tejas Supply  Agreement shall not terminate,  and shall remain
     in full force and effect, as to Committed Volumes.  Any such termination as
     to volumes that are not Committed  Volumes shall be effective 60 days after
     the closing of the sale by the Requesting Partner Group of its Interests in
     accordance with Section 6.4(e).

     6.5 DUTIES, RIGHTS AND OBLIGATIONS OF PARTNERS.

          (a) The  Partners  have agreed that it is in the best  interest of the
     Partnership  and all of its  Partners to cause the General  Partners to act
     solely through the mechanisms  provided  herein relating to the appointment
     and authority of the Board.  All Partners  agree that each General  Partner
     shall  have  fully  satisfied  all  obligations  of  care  it  owes  to the
     Partnership  and the other Partners by virtue of its appointment of members
     to the Board.  Except as specifically  provided herein,  no General Partner
     shall take any act on behalf of or that would bind the Partnership.

          (b) Except as otherwise permitted by this Agreement or applicable law,
     the Limited Partners acting in their capacity as Limited Partners shall not
     have any right (i) to  participate  in the  management  or  control  of the
     Partnership  or its  business  and  affairs,  (ii) to bring an  action  for
     partition  or sale  in  connection  with  the  property  or  assets  of the
     Partnership,  whether  real or  personal,  or  (iii) to act for or bind the
     Partnership in any way.


                                       40
<PAGE>


          (c) In  connection  with  the  determination  of any and  all  matters
     presented  to the Board or the General  Partners  for action,  the Partners
     agree and  acknowledge  that each member of the Board will be acting as the
     representative   of  the  General   Partner  that  appointed  such  member.
     Therefore,  each such Board member may act, and will be fully  protected in
     acting,  at the  direction  or control of, or in a manner  which such Board
     members  believe  is in the best  interest  of,  the  General  Partner  (or
     Affiliates of the General Partner) that appointed such Board member without
     regard to the interest of any other  Partner or the  Partnership.  Further,
     each General Partner, and/or Affiliate of the General Partner, may exercise
     direction and control of the  decisions of Board members  appointed by such
     General  Partner  without duty to or regard for the  interests of any other
     Partner or the  Partnership.  The  Partnership  and each Partner  therefore
     waive,  to the full extent  permitted  by law, any claim or cause of action
     against any General Partner, Affiliate of any General Partner, or member of
     the Board appointed by a General Partner, asserting, in connection with the
     determination of any and all matters  presented to the Board or the General
     Partners  for  action,  breach of  fiduciary  duty,  duty of care,  duty of
     loyalty or any other duty, breach of the Act, or breach of any duty created
     by special circumstances arising out of this Agreement or otherwise.

     6.6 INDEMNIFICATION OF THE GENERAL PARTNER.

          (a) THE  PARTNERSHIP,  ITS  RECEIVER,  OR ITS  TRUSTEE  SHALL  DEFEND,
     INDEMNIFY,  SAVE  HARMLESS,  AND PAY ALL JUDGMENTS  AND CLAIMS  AGAINST THE
     GENERAL  PARTNERS,  OR EITHER OF THEM, ANY LIMITED PARTNER,  THE BOARD, ANY
     BOARD MEMBERS, OR ANY OFFICER (EACH, AN "INDEMNITEE" AND, COLLECTIVELY, THE
     "INDEMNITEES")  RELATING TO ANY  LIABILITY OR DAMAGE  INCURRED BY REASON OF
     ANY  ACT  PERFORMED  OR  OMITTED  TO BE  PERFORMED  BY SUCH  INDEMNITEE  IN
     CONNECTION  WITH THE  BUSINESS  OF THE  PARTNERSHIP,  INCLUDING  REASONABLE
     ATTORNEYS'  FEES INCURRED BY SUCH INDEMNITEE IN CONNECTION WITH THE DEFENSE
     OF ANY ACTION BASED ON SUCH ACT OR OMISSION,  INCLUDING ANY ACT OR OMISSION
     WHICH CONSTITUTES NEGLIGENCE.

          (b) IN THE  EVENT OF ANY  ACTION  BY A LIMITED  PARTNER  AGAINST  SUCH
     INDEMNITEE,  INCLUDING A PARTNERSHIP DERIVATIVE SUIT, THE PARTNERSHIP SHALL
     DEFEND,  INDEMNIFY, SAVE HARMLESS, AND PAY ALL EXPENSES OF SUCH INDEMNITEE,
     INCLUDING  REASONABLE  ATTORNEYS'  FEES,  INCURRED  IN THE  DEFENSE OF SUCH
     ACTION.

          (c)  NOTWITHSTANDING  THE PROVISIONS OF SECTIONS 6.6(A) AND (B) ABOVE,
     AN INDEMNITEE SHALL NOT BE INDEMNIFIED FROM ANY LIABILITY,  CLAIM,  COST OR
     EXPENSE RESULTING FROM THE FRAUD,  WILLFUL CRIMINAL MISCONDUCT OR BREACH OF
     CONTRACT OF SUCH INDEMNITEE.

     6.7 PARTNERSHIP ACCOUNTS.  The Officers shall establish and maintain one or
more depository accounts as directed by the Board  ("PARTNERSHIP  ACCOUNTS") for
funds of the Partnership at depositories  selected by the Board. The Partnership
Accounts shall be administered in accordance with any contractual  agreements to
which the Partnership is a party 


                                       41
<PAGE>


or by which it is bound,  and subject  thereto,  in accordance with the business
judgment of the Board. If so requested in writing by any Partner,  the CEO shall
notify the Partners in writing of the location of all Partnership Accounts.  All
funds of the Partnership  shall be deposited in one of the Partnership  Accounts
and used  exclusively for Partnership  purposes.  No Partner shall commingle any
other funds with the funds of the Partnership in the Partnership Accounts.

     6.8 APPROVAL BY LIMITED  PARTNERS.  Unless a different  percentage  vote is
expressly  indicated,  all actions taken or approvals given by Limited  Partners
shall require the approval of the Limited  Partners  holding at least 98% of the
Interests of the Limited Partners.

     6.9 RELIANCE BY THIRD PARTIES.  Notwithstanding any other provision of this
Agreement to the contrary, no lender or purchaser or other Person, including any
purchaser of property from the  Partnership or any other Person dealing with the
Partnership,  shall be required to verify any representation by the Board or its
delegatees as to its authority to encumber,  sell or otherwise use any assets or
properties of the  Partnership,  and any such lender,  purchaser or other Person
shall be entitled to rely exclusively on such representations.

     6.10  TRANSACTIONS  WITH PARTNERS.  All transactions with Partners or their
Affiliates shall be on an arms-length  basis. Any professional or administrative
services  provided  by any  Partner or its  Affiliates  shall be  pursuant  to a
written contract service agreement.


                                   ARTICLE VII

                                BOOKS AND RECORDS

     7.1 BOOKS AND RECORDS; PERIODIC REPORTING.

          (a) The Partnership  shall keep accurate and complete books of account
     and  records  on an  accrual  basis  showing  exclusively  the  assets  and
     liabilities, results of operations, transactions and financial condition of
     the Partnership in accordance with generally accepted accounting principles
     and the accounting  principles  used by the  Partnership for federal income
     tax  purposes.  All  financial  statements  shall  be  accurate  and in all
     material  respects shall present fairly the financial  position and results
     of operations of the  Partnership.  The books of account and records of the
     Partnership shall at all times be maintained at the principal office of the
     Partnership.

          (b)  The  Board  shall  cause  to be  delivered  to each  Partner  the
     following:

               (i) Within 45 days after the end of each Fiscal Year, a statement
          of  financial  position  and  statement  of  income  from  operations,
          Partners'  equity and cash  flows,  all of which  shall be prepared in
          accordance  with  generally  accepted  accounting   principles  or  as
          otherwise  specified  by  this  Agreement,  together,  within  15 days
          thereafter, with an opinion thereon from the Partnership's independent
          certified public  accountants who shall initially be Deloitte & Touche
          L.L.P.;


                                       42
<PAGE>


               (ii)  Within 30 days  after the end of each  calendar  month,  an
          unaudited  monthly  statement  of income from  operations  prepared in
          accordance with generally accepted accounting  principles,  other than
          footnotes, subject to normal year end adjustments;

               (iii) Within 15 Business  Days after the receipt of the financial
          statements described in SECTION 7.1(b)(i):

                    (A) U.S.  Federal  Income Tax Form K-1 and any similar forms
               required by any state or local tax authority;

                    (B) a reconciliation  between the financial figures included
               in the audited financial statements and the financial information
               used for the Partnership's federal income tax return;

                    (C)  any  other   information   concerning  the  Partnership
               reasonably necessary for the preparation of the Partners' federal
               and state income tax returns; and

               (iv) Within 15 Business Days of the end of the applicable period,
          annual and monthly  statements of the  Partnership's  risk  management
          business according to provisions determined by the Officers subject to
          the approval of the Board. In the Board's discretion, these statements
          may be reviewed by the Accountants.

          (c) The  Partnership's  federal,  state and local income and other tax
     returns  shall be prepared  by the  Partnership.  The Board  shall  furnish
     drafts of such tax returns to the General  Partners for comment before they
     are finalized. All tax returns shall be signed on behalf of the Partnership
     and filed by the Tax Matters Partner.

          (d) Within five  Business  Days after the  receipt of the  information
     described in SECTION 7.1(b)(ii),  the Tax Matters Partner shall compute the
     Tax Amount to be used by the Partners in  determining  their  estimated tax
     payments and by the Board under SECTION 4.2.

     7.2  RIGHT  TO  INSPECTION.  Each  Partner  shall  have  the  right  at all
reasonable times upon reasonable  notice to examine and audit at its expense the
books and records of the Partnership.

     7.3 TAX MATTERS PARTNER.  Shell GP is hereby designated as the "Tax Matters
Partner" of the  Partnership,  as defined in Section  6231(a)(7) of the Code. In
carrying out its duties set out in this Agreement, the Tax Matters Partner shall
act in a  fiduciary  capacity  with  respect  to the  Partnership  and the other
Partners and shall take no action  (other than the  performance  of  ministerial
duties) without prior written notice of such action to the other Partners.

          (a) The Tax Matters  Partner  shall have the  authority  to extend the
     statute of  limitations  for  assessment  of tax  deficiencies  against the
     Partners with respect to adjustments to the Partnership's  federal,  state,
     local or foreign tax returns,  and to the 


                                       43
<PAGE>



     extent provided in Sections 6222 through 6231 of the Code, to represent the
     Partnership  and the  Partners  before  taxing  authorities  or  courts  of
     competent  jurisdiction  in tax matters  affecting the  Partnership and the
     Partners in their  capacities as Partners,  and to file any tax returns and
     execute any agreements or other documents relating to or affecting such tax
     matters,  including  agreements or other  documents  that bind the Partners
     with  respect  to such tax  matters or  otherwise  affect the rights of the
     Partnership  and the  Partners;  PROVIDED  that,  to the  extent  any  such
     extension,  agreement, election or document might have a material effect on
     any  Partner,  such  Partner  must  consent in  writing to such  extension,
     agreement, election or document and the Tax Matters Partner must reasonably
     consult with such Partner in any  discussions  or  negotiations  associated
     with such agreement or document.  Each Partner agrees to cooperate with the
     Tax  Matters  Partner  and to do or  refrain  from  doing any or all things
     reasonably required by the Tax Matters Partner to conduct such proceedings.

          (b) The Tax Matters  Partner  shall keep each Partner  informed of all
     administrative and judicial proceedings,  as required by Section 6223(g) of
     the Code,  and shall furnish each Partner who so requests in writing a copy
     of each notice or other communication  received by the Tax Matters Partner.
     If any Partner  intends to file a notice of  inconsistent  treatment  under
     Section  6222(b) of the Code,  such Partner  shall,  prior to the filing of
     such notice,  provide notice to the Tax Matters  Partner of such intent and
     the manner in which the  Partner's  intended  treatment of the  Partnership
     item is (or may be)  inconsistent  with the  treatment  of that item by the
     Partnership.

          (c) Each  Partner  will  bear  its own  costs  resulting  from any tax
     examination of its investment in the Partnership.

          (d) The Tax Matters Partner shall be reimbursed by the Partnership for
     all  the  reasonable  costs  incurred  by  it as  Tax  Matters  Partner  in
     connection  with any examination of the Partnership tax returns by a taxing
     authority.

     7.4 TAX ELECTIONS. The Partnership shall be treated, and shall file its tax
returns,  as a  partnership  for  federal,  state and local income and other tax
purposes. If any Partner receives notice of a tax examination of the Partnership
by any federal, state or local authority,  it shall promptly give notice thereof
to the other  Partners.  All elections  permitted to be made by the  Partnership
under the Code shall be made by the  Board;  PROVIDED,  HOWEVER,  that the Board
upon the request of any Partner shall make the election under Section 754 of the
Code in accordance with applicable  regulations thereunder AND PROVIDED that the
Partnership shall elect to deduct expenses, if any, incurred by it in organizing
itself,  ratably over a 60-month  period as provided in Section 709 of the Code.
The  Board,  upon  notice to and  consent by the other  Partners,  shall seek to
revoke any such election  (including,  without  limitation,  the election  under
Section 754 of the Code) upon the Board determination that such revocation is in
the best interests of the Partnership.


                                       44
<PAGE>


                                  ARTICLE VIII

                 TRANSFER; ADMISSION AND WITHDRAWAL OF PARTNERS

     8.1 RESTRICTIONS ON TRANSFER.

          (a) Except as permitted in SECTIONS 3.6, 3.7, 8.2, 8.3, 8.4 OR 8.6(d),
     (i) no Partner shall sell, assign, transfer, mortgage, charge, or otherwise
     encumber or hypothecate  (a "Transfer")  any part or all of its Interest or
     suffer any Third Party to cause a Transfer of its Interest or contract with
     any party to Transfer its  Interests and (ii) Shell Parent and Tejas Parent
     shall not  transfer or permit any  Subsidiary  in the  Partnership  Line of
     Ownership to transfer all or any part of such Parent's beneficial ownership
     of the Interests.

          (b) In  the  event  of a  proposed  Transfer  of  shares,  partnership
     interests,  or other equity  interests in any Subsidiary in the Partnership
     Line of Ownership  that does not  constitute a member of the Partner  Group
     offered in  compliance  with SECTIONS 8.3 and 8.4 and that does not satisfy
     the requirements of SECTION 8.2, then Shell Parent or Tejas Parent,  as the
     case may be, shall retain,  and shall cause such Transfer to exclude,  such
     Parent's beneficial ownership of the Interests.

     8.2 TRANSFER TO AFFILIATE OR TRANSFER WITH CONSENT.

          (a) A Partner may  transfer  part or all of its  Interest or shares in
     any Subsidiary in the Partnership Line of Ownership, without the consent of
     any other Partner, to any U.S. entity 100% of the equity interests of which
     are directly or indirectly  held by Shell Parent or Tejas Parent.  Any such
     transferee of Interests shall be admitted as a Partner.

          (b) A Partner may  Transfer  its Interest at any time with the consent
     of all General  Partners,  which  consent  may be withheld in the  absolute
     discretion of any General Partner.

          (c) A Shareholder or Subsidiary in the  Partnership  Line of Ownership
     may  Transfer its  Partner's  Interest or shares or any  Subsidiary  in the
     Partnership Line of Ownership pursuant to or in connection with a mortgage,
     pledge  or grant  of a  security  interest  presently  existing  or that is
     entered  into or placed in effect  after  the date  hereof  with  Qualified
     Financial Institutions.

     8.3 "FIRST LOOK" TRANSFERS AFTER EXIT DATE.

          (a) Any Partner  and/or its  Affiliates  (the  "Selling  Partner") may
     offer (the "Offer") to sell all of its Interests or all of its  Affiliate's
     shares of the Partner Group (such Interests or shares being herein referred
     to as the "Offered  Interests") to the Respondent at any time after January
     1, 1999. The Offer shall include a copy of all material agreements pursuant
     to which the sale of the Offered  Interests would occur.  Respondent  shall
     have a period of 30 days to respond to such Offer and within  such time


                                       45
<PAGE>



     may make a written  acceptance  (the  "Response") to the Selling Partner to
     purchase the Selling Partner's Offered Interest upon the price,  terms, and
     conditions of the Offer.

          (b) In the event  Respondent  delivers  a  Response  within the 30-day
     period,  the Selling Partner and Respondent  shall close the sale within 90
     days of the Response or as soon thereafter as practicable.

          (c) In the event  Respondent  fails to deliver a  Response  within the
     twenty day period or rejects the offer, then, after compliance with SECTION
     8.4 below,  the Selling  Partner  may,  but is not  obligated  to, sell the
     subject  Offered  Interest,  upon the terms and  conditions  of SECTION 8.4
     below.  If the Selling  Partner does not make such a sale,  it shall retain
     its Offered  Interest,  subject to the restrictions on Transfer provided in
     this Agreement.

     8.4 "LAST LOOK" TRANSFERS AFTER EXIT DATE.

          (a)  Following  compliance  with SECTION 8.3, the Selling  Partner may
     accept or solicit an Offer (as defined  above) from a single Person (acting
     alone or through  multiple  wholly-owned  subsidiaries)  to buy the Offered
     Interests  for cash at the  closing  (i) after  January 1,  1999,  and (ii)
     pursuant to a written  Offer the  acceptance  of which by such Person would
     create a binding and enforceable agreement of sale of the Offered Interest,
     but only after compliance with SECTIONS 8.4(b) through 8.4(f) hereof.

          (b) Prior to  accepting  an Offer,  the  Selling  Partner  shall  give
     written  notice to the  Respondent  and the  Partnership  of all the terms,
     provisions,  and  conditions  (including,  without  limitation,  whether an
     election  under Section  338(h)(10) of the Code is being made) with respect
     to such Offer,  including a copy  thereof,  and the Selling  Partner  shall
     offer to sell to Respondent,  subject to the  Retirement  Option in SECTION
     8.5, the Selling  Partner's Offered Interest which is subject to such Offer
     on the same terms,  price,  provisions,  and conditions as are set forth in
     the Offer,  except that the purchase  price may be increased as provided in
     SECTION 8.4(f).

          (c)  Respondent  shall  have a period  of 30 days from the date of its
     receipt of the written notice from the Selling Partner to accept such offer
     on the same terms, price, provisions, and conditions stated in such written
     notice  insofar as they may be  applicable  to  Respondent  (subject to any
     increase  in  the  purchase  price  required  by  SECTION  8.4(f)),   which
     acceptance  must be in writing and be received by the Selling Partner prior
     to the  expiration of such 30-day  period.  Any purported  acceptance  made
     orally shall be ineffective,  and any purported acceptance which varies the
     terms of such offer shall be deemed a rejection  thereof for all  purposes.
     If  Respondent   accepts  such  offer  in  accordance  with  the  foregoing
     provisions,  Respondent  shall be bound to purchase the Offered Interest in
     accordance  with such offer and the Selling  Partner shall be bound to sell
     the Offered Interest on the terms,  price,  provisions,  and conditions set
     forth in the Selling  Partner's  written notice  (including any increase in
     the purchase price required by SECTION 8.4(f)). The closing of the purchase
     by Respondent  shall be held at the time and place specified in the written
     notice from the Selling  Partner,  or such later date as is mutually agreed
     to by  Respondent  and the Selling  Partner,  but in no event shall closing


                                       46
<PAGE>


     take  place  earlier  than  sixty  (60)  days from the date of  receipt  by
     Respondent of the written notice from the Selling Partner.

          (d) In the event  Respondent  delivers  written notice of rejection to
     the Selling  Partner,  or in the event Respondent fails to accept the Offer
     in the manner  required  by SECTION  8.4(C)  hereof,  the Offer made by the
     Selling  Partner shall be deemed to have been rejected by  Respondent,  the
     Selling  Partner shall be free to sell,  transfer,  assign,  or convey such
     Offered  Interest  in the  Partnership  to the  Third  Party on the  terms,
     provisions  and conditions set forth in the written notice to Respondent or
     other terms and conditions not less favorable to the Selling  Partner.  Any
     such purchaser, transferee, or assignee shall become a Partner.

          (e) In the event that such  transaction is not consummated as provided
     in SECTION  8.4(d)  hereof on or before  sixty (60) days after the  closing
     date specified in the notice from the Selling Partner to Respondent, or, in
     the  event  any  terms  and  provisions  of such  transaction  are  changed
     following a rejection by the Selling Partner in a manner which renders such
     terms less  favorable to the Selling  Partners no Transfer of such interest
     in the  Partnership  may be made unless the  provisions  of this  Agreement
     restricting Transfers are again complied with.

          (f) The purchase  price  payable by the  Respondent  under SECTION 8.4
     shall be  increased  by 10% if (and only if) the Third  Party  Offer  under
     SECTION  8.4(a) exceeds the price at which the Selling  Partner  offered to
     sell the Offered  Interests  to the  Respondent  under  SECTION 8.3. No 10%
     premium  shall be due in the  event of an  unsolicited  offer  from a Third
     Party to the Selling Partner.

     8.5 PARTNERSHIP INTEREST RETIREMENT OPTION.

     If a Selling  Partner has  offered to sell  directly  all of its  Interests
under SECTION 8.3 or has given notice to the  Partnership  under SECTION 8.4(b),
then the Partnership, at its option within ten days after receipt of the notice,
may retire all of the Selling  Partner's  Partnership  Interest (the "Retirement
Option") on the following terms:

          (a) The Retirement Option will take priority over Respondent's  option
     under SECTION 8.3 OR 8.4(b),

          (b)  The  Partnership  shall  make a  retirement  distribution  to the
     Selling Partner equal to the purchase price required by SECTION 8.3 or 8.4,

          (c) A Selling  Partner  will be subject to the same terms,  provisions
     and conditions as established in the Offer,

          (d) The retirement distribution shall occur no later than 60 days from
     the date that the  Selling  Partner  elects to require the  Partnership  to
     retire the Offered Interests and


                                       47
<PAGE>


          (e)  Upon the  making  of the  retirement  distribution,  the  Selling
     Partner shall cease to be a Partner and its Interest shall be extinguished.
     The Partnership  Percentages of the other Partners shall be proportionately
     increased.

     Any premium  pursuant to SECTION  8.4(f)  shall be treated as a  guaranteed
payment  within the  meaning of Section  707(c) of the Code and  recorded  as an
expense of the Partnership for income tax and financial  reporting  purposes and
will not be  considered  a  distribution  of money to the Selling  Partner  that
reduces its Capital Account.

     In the event of a change in the Code where the maximum  marginal  corporate
capital  gains tax rate is lower than the maximum  marginal  ordinary  corporate
income tax rate,  the Selling  Partner shall  receive an  additional  Guaranteed
Payment (herein so called) computed as follows:

               (i) The  Guaranteed  Payment times the maximum  marginal  federal
          ordinary  corporate  tax rate minus the  Guaranteed  Payment times the
          maximum marginal federal corporate capital gains tax rate.

               (ii) The positive amount in clause (i)  immediately  preceding is
          divided by the difference between 1 minus the maximum marginal federal
          ordinary corporate tax rate.

     8.6 ADMISSION OF NEW LIMITED PARTNERS.

          (a) Subject to SECTIONS  8.4(d),  8.6(b) AND 8.6(c),  with the written
     consent of the General Partners,  which consent may be arbitrarily withheld
     in the sole  discretion of any General  Partner,  the Partnership may admit
     one or more new Limited Partners. Any Limited Partner so admitted shall (i)
     make a Capital Contribution and (ii) have a Partnership Percentage, in such
     amounts as shall be determined by the General Partners and shall dilute the
     existing Limited Partners pro rata.

          (b) No new Partner  shall be admitted  to the  Partnership  (i) if the
     effect of such  admission  would be the transfer of greater than 50% of the
     Partnership Interests in any twelve-month period; or (ii) if such admission
     could, with the giving of notice,  the passage of time or both, violate the
     terms of, or constitute a breach of or a default  under,  this Agreement or
     any  other  agreement,  document,  contract  or  instrument  to  which  the
     Partnership  is a party to or by which the  Partnership  or its  assets are
     bound.

          (c) The  admission  of any new Partner to the  Partnership  (i) may be
     conditioned  on the  receipt  by the  Partnership  of  opinions  of counsel
     acceptable to the Board with respect to compliance by the  Partnership  and
     the new Partner with securities,  tax and other laws and such other matters
     as the Board may deem  appropriate  and (ii)  shall be  conditioned  on the
     confirmation by the new Partner of the accuracy of the  representations and
     warranties,  and the  agreement  of such  new  Partner  to be  bound by the
     covenants,  contained  in  ARTICLE  XI of this  Agreement,  insofar as such
     representations, warranties and covenants pertain to such new Partner.

          (d)  Notwithstanding  the foregoing,  at the time of any adjustment in
     the Partnership Percentage of the Partners pursuant to SECTION 3.6 AND 3.7,
     Tejas LP2 and


                                       48
<PAGE>


     Shell LP2, upon the request of either,  will each transfer a  proportionate
     share of their adjusted  Partnership  Percentage (up to 2 percentage points
     in  the  aggregate)  to a  mutually  acceptable  entity  upon  terms  to be
     reasonably agreed to by such Partners.

     8.7 CHANGE OF CONTROL. (a) In the event that:

               (A) either Shell Parent or Tejas Parent (each,  a  "Shareholder")
          or a Subsidiary in the Partnership  Line of Ownership  (together,  the
          "Affected   Shareholder")   enters  into  an  agreement  to  (i)  sell
          substantially  all of its  assets,  (ii) merge into  another  business
          entity (the  Shareholder  or  Subsidiary  in the  Partnership  Line of
          Ownership,  as the case may be, not being a survivor  to the  merger),
          (iii) sell voting  stock  representing  a majority of its  outstanding
          voting stock to a New Control Group, or (iv) transfer control over its
          business and affairs to a New Control Group, or

               (B) a New Control  Group  acquires a majority of the voting stock
          of a  Shareholder  or of any  Subsidiary  in the  Partnership  Line of
          Ownership, or

               (C) a New Control Group other than the then-current management of
          the  Shareholder  acquires by proxy,  written consent or otherwise the
          ability  to  name  a  majority  of  the  board  of  directors  of  the
          Shareholder or of any Subsidiary in the Partnership Line of Ownership,
          or

               (D) any of the  foregoing  events  described  in (A)  through (C)
          immediately  preceding  shall be caused  by, or  result,  directly  or
          indirectly,  from any  exercise by a creditor of any rights  under any
          credit agreement, any foreclosure, bankruptcy or other event described
          in clauses (E) or (F) below, or

               (E) the Shareholder or any Subsidiary in the Partnership  Line of
          Ownership commences a voluntary case under any applicable  bankruptcy,
          insolvency  or other  similar law now or  hereafter in effect or shall
          consent  to the entry of any order for relief in an  involuntary  case
          under any such law, or shall consent to the  appointment  of or taking
          possession by a receiver,  liquidator,  assignee,  trustee, custodian,
          sequestrator  or similar  official of the Shareholder or Subsidiary in
          the Partnership  Line of Ownership or for any substantial  part of its
          property,  or shall make any  general  assignment  for the  benefit of
          creditors, or

               (F) a court having  jurisdiction  in the  premises  shall enter a
          decree or order for  relief in respect  of the  Shareholder  or of any
          Subsidiary in the Partnership Line of Ownership in an involuntary case
          under any applicable  bankruptcy,  insolvency or other similar law now
          or  hereafter  in  effect,  or  appointing  a  receiver,   liquidator,
          assignee, trustee, custodian,  sequestrator or similar official of the
          Shareholder or such Subsidiary in the Partnership Line of Ownership or
          such  affiliate or for all or  substantially  all of its property,  or
          ordering the  winding-up or liquidation of its affairs and such decree
          or order  shall  remain  unstayed  and in  effect  for a period  of 60
          consecutive days


                                       49
<PAGE>


     (each of the  foregoing  (A)  through  (F)  immediately  preceding  being a
     "Triggering   Event"),   then  the  other  Shareholder  (the  "Non-Changing
     Shareholder")  shall have an option to  acquire  the  Partnership  Interest
     owned  by both  the  General  Partner  and the  Limited  Partners  owned or
     controlled by the Affected Shareholder.

          (b) Such option may be exercised by the  Non-Changing  Shareholder  by
     delivery of a written  notice  delivered  to the Affected  Shareholder  not
     later than the 180th  calendar day following the earlier of (i) delivery to
     the  Non-Changing  Shareholder  by the  Affected  Shareholder  of a written
     notice specifying that a Triggering Event had occurred, (ii) publication of
     the fact that a Triggering  Event had occurred in THE WALL STREET  JOURNAL,
     or (iii) the filing by a group or Person of a notice  under the  Securities
     Exchange Act of 1934, as amended, of a notice that such group or Person had
     acquired  or made an  agreement  to acquire not less than 50% of the voting
     stock of the  Affected  Shareholder.  Upon  exercise  of such option by the
     Non-Changing   Shareholder,   the  Initial  Agreements  with  the  Affected
     Shareholder may be terminated:

               (i)  at  the  election  of  such  Affected   Shareholder  if  the
          Triggering Event was approved by the Continuing Directors; and

               (ii)  at the  election  of the  Non-Changing  Shareholder  if the
          Triggering Event was not approved by the Continuing Directors;

     provided,  however,  that the Shell  Supply  Agreement  or the Tejas Supply
     Agreement,  as the case may be,  between the  Affected  Shareholder  or its
     affiliates and the  Partnership  shall continue in full force and effect as
     to Committed Volumes.

          (c) The purchase price of the Partnership Interests to be so purchased
     shall be paid in cash by the Non-Changing Shareholder and shall be equal to
     the Fair Market Value of such Partnership Interests.

     8.8 WITHDRAWAL OF A PARTNER.

          (a) A General  Partner may not withdraw from the  Partnership  without
     breaching this Agreement.  In the event the General Partner withdraws,  the
     Interest of the  withdrawing  General  Partner  shall be converted  to, and
     treated as, an Interest held by a Limited Partner.  The withdrawing General
     Partner  shall have the right to become a substitute  Limited  Partner with
     the consent of the other General Partner successor. The withdrawing General
     Partner  shall  continue  to have the same  rights to  profits,  losses and
     distributions as if it had remained a General Partner.

          (b) No Limited Partner may withdraw from the  Partnership  without the
     written  consent of the General  Partners.  In granting such  consent,  the
     General Partners shall condition the withdrawal of the withdrawing  Limited
     Partner on such  matters as each  Partner  may deem  appropriate,  and,  in
     granting such consents,  shall  determine (i) the extent,  if any, to which
     such withdrawing Partner shall retain an interest in the Partnership;  (ii)
     the terms and  conditions  on and timing of the return of such  withdrawing
     Partner's capital;  and (iii) the extent, if any, to which such withdrawing
     Partner shall


                                       50
<PAGE>


     remain   obligated  or  liable  for  obligations  and  liabilities  of  the
     Partnership and/or at risk with respect to ongoing Partnership operations.

          (c) No Limited Partner may withdraw from the Partnership if the effect
     of such withdrawal could,  with the giving of notice,  the passage of time,
     or both,  violate the terms of or constitute a breach of or a default under
     this Agreement or any other agreement,  document, contract or instrument to
     which the  Partnership is a party or by which the Partnership or its assets
     are bound.

          (d) Subject to SECTION 8.8(b),  on the withdrawal of a Limited Partner
     from the Partnership in accordance with this Section,  such Limited Partner
     shall cease to be a Partner for all purposes.

     8.9 SUBSTITUTE  PARTNERS.  Except in the case of assignees  pursuant to the
provisions of SECTIONS  8.2, 8.3, AND 8.4, an assignee of an Interest  shall not
become a substitute  Partner without the written consent of all Partners,  which
consents may be  arbitrarily  withheld in the sole  discretion of such Partners.
Each assignee shall execute an instrument in form and substance  satisfactory to
the  General  Partner  agreeing to be bound by this  ARTICLE  VIII and any other
appropriate  provisions of this  Agreement.  Any assignee who is not admitted to
the  Partnership  shall  have  only the  rights  to  receive  distributions  and
allocations.

     8.10  EFFECT OF  DISPOSITION.  Except as provided  in SECTION  8.8(a),  any
Partner that has disposed of all of its Interest shall cease to be a Partner for
purposes of this Agreement;  PROVIDED,  HOWEVER,  that such Partner shall remain
liable  for  its  obligations  under  this  Agreement   incurred  prior  to  the
disposition of its Interest,  and shall remain liable to the Partnership and the
other  Partners  for the  actions and  omissions  of such  Partner  prior to the
disposition of its Interest.

     8.11 EFFECT OF NONCOMPLIANCE.  Any purported  Transfer of an Interest other
than in accordance  with the  provisions of this Article shall be void AB INITIO
and shall not cause a dissolution of the Partnership.

     8.12 EFFECT ON SUPPLY  AGREEMENTS.  In the event that a Partner Group sells
its  entire  Interests  pursuant  to  SECTION  8.3 OR 8.4 or has  its  Interests
redeemed  pursuant to SECTION 8.5, then the selling Partner Group, by notice not
less than 10 Business Days before such sale,  shall have the option to terminate
the Shell Supply  Agreement or Tejas  Supply  Agreement,  as the case may be, to
which it or its Affiliates are parties as a "Seller"  thereunder,  as to natural
gas volumes that are not Committed Volumes.  The Shell Supply Agreement or Tejas
Supply Agreement shall not terminate, and shall remain in full force and effect,
as to  Committed  Volumes.  Any  such  termination  as to  volumes  that are not
Committed  Volumes  shall be  effective 60 days after the closing of the sale by
the selling Partner Group of its Interests in accordance with SECTION 8.3 OR 8.4
or the  redemption  pursuant  to SECTION  8.5.  In the event that a Third  Party
purchaser of the Interests  from the selling  Partner Group offers to supply the
Committed  Volumes upon terms and conditions  identical to, or more favorable to
the  Partnership  than,  those of the Shell  Supply  Agreement  or Tejas  Supply
Agreement,  as the case may be,  and such Third  Party is capable of  performing
such  commitment in the reasonable  judgment of the General  Partners,  then the
selling  Partner  Group  shall be  released  from  its  obligation  to  continue


                                       51
<PAGE>


supplying  Committed  Volumes as required by this SECTION  8.12;  provided  that
Shell  Partner Group or Tejas  Partner  Group,  as the case may be, of which the
Selling Partner is a member, shall guarantee  performance by such Third Party of
its obligations to supply the Committed Volumes.


                                   ARTICLE IX

                           DISSOLUTION OF PARTNERSHIP

     9.1  DISSOLUTION  EVENTS.  The  Partnership  shall  be  dissolved  upon the
occurrence of any of the following events:

          (a)  The   voluntary   agreement  of  all  Partners  to  dissolve  the
     Partnership;

          (b) The  expiration  of the term  specified in SECTION 2.5;  provided,
     that, where the term has been extended,  dissolution  shall not occur until
     expiration of the final extension;

          (c) Upon the  occurrence  of any of the  following  events  by or with
     respect to a General Partner (the "DEFAULTING PARTNER"):

               (i) the Defaulting Partner (A) makes a general assignment for the
          benefit of creditors;  (B) files a voluntary bankruptcy petition;  (C)
          files a  petition  or  answer  seeking  for  itself a  reorganization,
          arrangement,  composition,  readjustment,  liquidation, dissolution or
          similar  relief under any law;  (D) files an answer or other  pleading
          admitting or failing to contest the material allegations of a petition
          filed  against  the  Defaulting  Partner in a  proceeding  of the type
          described in clauses (A)-(C) of this sentence;  or (E) seeks, consents
          to  or  acquiesces  in  the  appointment  of a  trustee,  receiver  or
          liquidator of the Defaulting Partner or of all or any substantial part
          of its properties; or

               (ii) a final and  non-appealable  judgment  is entered by a court
          with  appropriate  jurisdiction  ruling that a  Defaulting  Partner is
          bankrupt or insolvent,  or a final  non-appealable order for relief is
          entered  by  a  court  with  appropriate   jurisdiction   against  the
          Defaulting Partner, in each case under any federal or state bankruptcy
          or insolvency laws as now or hereinafter in effect;

     provided  that in each  case  the  Defaulting  Partner  shall  use its best
     efforts to provide prior notice of at least 24 hours to the  Partnership of
     the  pending  occurrence  of  such  event  and in any  event  will  provide
     notification of the occurrence of such event to the Partnership  within two
     Business Days of it having occurred;

          (d) A Partner (the  "Defaulting  Partner") shall breach this Agreement
     in any  material  respect,  which  breach  continues  for 30  days  after a
     non-defaulting  General Partner (that is not an Affiliate of the Defaulting
     Partner) has given written notice thereof to the  Defaulting  Partner;


                                       52
<PAGE>


          (e) If,  during  the  existence  of the  Partnership,  there  shall be
     enacted in the U.S. any law,  regulation or directive,  whether  federal or
     state (or any change  occurs to the  interpretation,  whether  by  judicial
     decision or change in policy of a U.S. or state  governmental body, of such
     law, regulation or directive) the effect of which would be either:

               (i) to reduce or to require a Partner to reduce or dispose of any
          material part of its Interest in the Partnership; or

               (ii) to cause  any one of this  Agreement  or any of the  Initial
          Agreements  to be  terminated  or modified  in a manner  substantially
          prejudicial to any Partner or any Affiliate of a Partner; or

               (iii) cause any Partner or any  Affiliate  of a Partner to suffer
          serious material hardship for reasons  concerning its participation in
          the Partnership;

     AND  PROVIDED  THAT such  enactment  or change in  interpretation  does not
     equally affect all Partners, THEN, at the request of any adversely affected
     Partner,  the Partners  will  dissolve the  Partnership  and  liquidate the
     Partnership in an orderly manner as soon as practicable in accordance  with
     Article X;  PROVIDED  FURTHER  THAT,  if the  Partners  do not agree that a
     dissolution of the  Partnership  is  appropriate or if the Partners  cannot
     agree upon a plan of dissolution,  such disagreement shall be submitted for
     arbitration  in accordance  with SECTION 12.10;  PROVIDED  FURTHER THAT, if
     Partners from at least two different  Partner  Groups are unaffected by the
     enactment  or change  in  interpretation,  the  unaffected  Partners  shall
     thereafter  reconstitute  the  Partnership  without the adversely  affected
     Partner.

          (f) Notice from any General  Partner of its  election to dissolve  the
     Partnership  following  termination,  for any reason,  of the Shell  Supply
     Agreement or the Tejas Supply Agreement;  PROVIDED,  HOWEVER,  if the Shell
     Supply  Agreement or the Tejas  Supply  Agreement  is  terminated  due to a
     breach thereof by an Affiliate of a General  Partner,  such General Partner
     may  not  cause  a  dissolution  of the  Partnership  as a  result  of such
     termination pursuant to this paragraph (f);

          (g) Any of the events stated in SECTION  9.1(c) occurs with respect to
     the Partnership (as though the Partnership were the "Defaulting Partner" as
     that term is used in such Section); or

          (h) Any other act by or with respect to the Partnership constituting a
     dissolution under applicable law.

     9.2  RECONSTITUTION  OF THE  PARTNERSHIP.  On the  occurrence  of an  event
described  in  SECTIONS  9.1(a),  9.1(b) OR  9.1(f),  the  Partnership  shall be
liquidated,  and the affairs of the Partnership  shall be wound up in accordance
with the  provisions of ARTICLE X. On the  occurrence  of an event  described in
SECTIONS 9.1(c) OR 9.1(d), upon the consent within 90 days after such event of a
majority  in  Interest  of the  Limited  Partners  (excluding  Partners  who are
Defaulting Partners or Affiliates of Defaulting Partners), the Partnership shall
be  reconstituted 


                                       53
<PAGE>


without the  Defaulting  Partners and the business of the  Partnership  shall be
continued without interruption,  otherwise,  the Partnership shall be liquidated
and shall be wound up  pursuant  to  ARTICLE  X. On the  occurrence  of an event
described in SECTION 9.1(g) OR 9.1(h) upon the consent within 90 days after such
event of a  majority  in  Interest  of the  Limited  Partners  not  causing  the
dissolution of the Partnership,  the Partnership  shall be reconstituted and the
business of the  Partnership  shall be  continued  without  interruption  to the
extent permitted under applicable law, or, absent such consent,  the Partnership
shall be liquidated and wound up pursuant to ARTICLE X.


                                    ARTICLE X

                         LIQUIDATION OF THE PARTNERSHIP

     10.1 LIQUIDATION.  In the event of dissolution of the Partnership where the
business of the Partnership is not  reconstituted,  liquidation shall occur. The
Board shall cause a determination of the Fair Market Value of the  Partnership's
assets and shall supervise the liquidation of the Partnership; PROVIDED THAT, if
a wrongful act of a General  Partner  dissolved the  Partnership,  Board members
appointed by such General  Partner shall not be entitled to  participate in such
supervision.  In the event of any  liquidation  of the  Partnership  under  this
Agreement  or the Act,  except as  otherwise  provided  herein,  the proceeds of
liquidating  the  Partnership  shall be applied and distributed in the following
order of priority  (each item to be  satisfied in full in the order listed below
before any of such proceeds are allocated to the subsequent item):

          (a) First, to creditors,  including Partners who are creditors (to the
     extent not otherwise  prohibited by law), in satisfaction of liabilities of
     the Partnership  (whether by payment or the making of reasonable  provision
     for  payment  therefor),   other  than  liabilities  for  which  reasonable
     provision   for  payment  has  been  made  and   liabilities   for  interim
     distributions to Partners and distributions to Partners on withdrawal; then

          (b) Second,  to the setting up of any reserves  which the  supervising
     members  of  the  Board  determine  to  be  reasonably  necessary  for  any
     contingent liabilities of the Partnership or of any Partner arising out of,
     or in connection with, a Partnership liability; then

          (c) Third,  subject  to  SECTION  10.2,  to the  Partners  pro rata in
     proportion to their positive Capital Accounts balances until those positive
     balances all equal zero; then

          (d) Finally,  subject to SECTION  10.2,  the  balance,  if any, to the
     Partners pro rata in proportion to their Partnership Percentages;

provided, that, to the fullest extent practicable and subject to the requirement
that all  distributions to the Partners shall be in proportion to their positive
Capital Accounts balances, (i) Shell LP1 and, thereafter, Shell LP2 and Shell GP
shall be distributed Shell LP1 Economic  Interest  Contributions as reflected on
EXHIBIT C and any Physical  Contract the performance of which by the Partnership
is  guaranteed  by Shell  Parent or one of its  Affiliates  and Tejas LP1,  and,
thereafter,  Tejas LP2 and  Tejas GP shall be  distributed  Tejas  LP1  Economic
Interest


                                       54
<PAGE>


Contributions  as  reflected  on  EXHIBIT  D  and  any  Physical   Contract  the
performance of which by the  Partnership is guaranteed by Tejas Parent or one of
its Affiliates; (ii) after satisfaction of clause (i) immediately preceding, any
Physical  Contracts  with  customers  who were  customers  under  any  contracts
identified on EXHIBIT C shall be  distributed to the Shell Partner Group and any
Physical  Contracts  with  customers  who were  customers  under  any  contracts
identified on EXHIBIT D shall be  distributed  to the Tejas Partner  Group;  and
(iii)  thereafter,  any  remaining  Physical  Contract  or other  asset shall be
distributed  equitably to the Partner Group having the closest business nexus to
the customer or transaction associated with such Physical Contract or asset. Any
portfolio of futures contracts,  hedges, and other similar  derivatives shall be
marked to market and, upon request by any Partner,  shall be sold to the highest
bidder.

     Neither the General  Partner nor the Board shall  receive any  compensation
for any services performed pursuant to this ARTICLE X.

     10.2 COMPLIANCE WITH TIMING  REQUIREMENTS OF REGULATIONS.  In the event the
Partnership is "liquidated"  within the meaning of Section  1.704-1(b)(2)(ii)(g)
of the Regulations:

          (i)  distributions  shall be made  pursuant  to this  ARTICLE X to the
     Partners who have  positive  Capital  Accounts in  compliance  with Section
     1.704-1(b)(2)(ii)(b)(2)  of  the  Regulations  as  adjusted  under  Section
     1.704-1(b)(2)(iv)(f) of the Regulations; and

          (ii) if a General  Partners'  Capital  Account  has a deficit  balance
     (after giving effect to all  contributions,  distributions  and allocations
     for all taxable  years,  including  the year during which such  liquidation
     occurs),  the  General  Partner  shall  contribute  to the  capital  of the
     Partnership the amount necessary to restore such deficit balance to zero in
     compliance with Section 1.704-1(b)(2)(ii)(b)(3) of the Regulations.

     10.3 DEEMED  DISTRIBUTION  AND  RECONSTITUTION.  Notwithstanding  any other
provision of this ARTICLE X, in the event the  Partnership is liquidated  within
the  meaning  of  Section  1.704-1(b)(2)(ii)(g)  of  the   Regulations  but  the
Partnership  is not  liquidated  under  this  ARTICLE  X,  the  Property  of the
Partnership shall not be liquidated,  the Partnership's liabilities shall not be
paid or  discharged,  and the  Partnership's  affairs  shall  not be  wound  up.
Instead,  the Partnership  shall be deemed to have distributed the assets of the
Partnership  in kind to the  Partners,  who shall be deemed to have  assumed and
taken  subject to all  Partnership  liabilities,  all in  accordance  with their
respective  Capital  Accounts.  Immediately  thereafter,  the Partners  shall be
deemed to have  recontributed  the  Property in kind to the  Partnership,  which
shall be deemed to have assumed and taken subject to all such liabilities.

     10.4  RIGHTS OF LIMITED  PARTNERS.  Except as  otherwise  provided  in this
Agreement,  each  Limited  Partner  shall  look  solely  to  the  assets  of the
Partnership for the return of his Capital  Contribution  and shall have no right
or power to demand or receive property other than cash from the Partnership.  No
Limited  Partner shall have  priority  over any other Limited  Partner as to the
return of his Capital Contributions, or distributions or allocations.


                                       55
<PAGE>


                                   ARTICLE XI

                      REPRESENTATIONS OF LIMITED PARTNERS;
                                 INDEMNIFICATION

     11.1 REPRESENTATIONS OF LIMITED PARTNERS.  Each of the Limited Partners and
assignees of an interest of a Limited  Partner hereby  represents,  warrants and
acknowledges to the Partnership and the other Partners that:

          (a) the Limited  Partner or assignee is acquiring its Interest for its
     own  account  for  investment  and not with a view  to,  or for  resale  in
     connection  with, any  distribution or public  offering  thereof within the
     meaning of the Securities Act of 1933, as amended (the  "SECURITIES  ACT"),
     or other applicable securities law or regulations;

          (b) each Limited  Partner's  Interest may only be disposed of pursuant
     to an effective  registration  statement filed under the Securities Act, or
     pursuant  to  an  exemption  from  the  registration  requirements  of  the
     Securities Act; the Partnership has not filed such a registration statement
     nor has any obligation to do so, nor has agreed to do so, nor  contemplates
     doing so in the future; and in the absence of such a registration statement
     or such an  exemption,  the Limited  Partner may have to hold its  Interest
     indefinitely  and may be  unable  to  liquidate  it in case of a  financial
     emergency;

          (c) each Limited  Partner is acquiring its Interest in the Partnership
     solely for such  Partner's  account,  for  investment,  without a view to a
     distribution  thereof  within the meaning of the  Securities  Act,  and the
     Interest of that Limited  Partner will not be offered,  sold or transferred
     by  such  Limited  Partner  in  violation  of  the  Securities  Act  or the
     securities laws of any state or other jurisdiction;

          (d) each Limited Partner confirms that the Partnership and the General
     Partners  have  made  available  to  such  Limited   Partner,   or  to  the
     representative  of such Limited  Partner,  the opportunity to ask questions
     and to acquire such additional information about the business and financial
     condition  of the  Partnership  as such  Limited  Partner has  requested or
     desired;

          (e) such Limited Partner  understands and has taken  cognizance of all
     risk factors related to the acquisition of its Interest in the Partnership,
     and  its  knowledge  and   experience,   and/or  that  of  its   authorized
     representatives,  in  financial  and  business  matters is such that it is,
     and/or its authorized representatives are, capable of evaluating the merits
     and risks of acquiring an Interest in the Partnership;

          (f) such Limited Partner has and/or its authorized representative has,
     (i) knowledge of finance,  securities and investments,  generally, and (ii)
     experience and skill in investments based on actual participation;

          (g) there  are no  understandings  or  agreements  among  the  Limited
     Partners  regarding  the  pricing  or timing of any future  disposition  of
     Interests other than as may be specifically provided for in this Agreement;


                                       56
<PAGE>

CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)


     (h) each  Limited  Partner  is  investing  in the  Partnership  for its own
     account and not as an agent, directly or indirectly, for any other person.


     11.2  INDEMNIFICATION.  EACH PARTNER, AND EACH ASSIGNEE OF AN INTEREST OF A
PARTNER  (EACH AN  "INDEMNITOR"),  HEREBY  AGREES TO DEFEND,  INDEMNIFY AND HOLD
HARMLESS THE PARTNERSHIP AND THE OTHER PARTNERS FROM AND AGAINST ANY LOSS, COST,
DAMAGE, CLAIM, LIABILITY OR EXPENSE, INCLUDING THE COSTS OF DEFENDING ANY ACTION
BROUGHT  AGAINST THE  PARTNERSHIP OR ANY PARTNER,  ARISING OUT OF OR RELATING TO
INDEMNITOR'S BREACH OF OR DEFAULT OR MISREPRESENTATION UNDER THIS AGREEMENT.

     11.3 NET  WORTH  MAINTENANCE.  The  Shell GP and the  Tejas GP or any other
General Partner shall separately maintain their share of Minimum Net Worth. Each
General  Partner's  share of Minimum  Net Worth  shall be the product of the (i)
Minimum Net Worth,  times (ii) the proportion  (expressed as a percentage)  that
such  General  Partner's   Partnership   Percentage  bears  to  the  Partnership
Percentages of all General  Partners.  Any indemnity  payment made under SECTION
11.2 due to a reclassification  of the Partnership as a corporation  taxable for
federal  income tax purposes will be  grossed-up  for any federal or state taxes
related to the receipt by the indemnitee less any tax savings resulting from the
indemnity  payment,  the  defaulting  General  Partner  to  indemnify  the other
Partners accordingly.


                                  ARTICLE XII

                                  MISCELLANEOUS

     12.1  *


     12.2 ADDITIONAL  DOCUMENTS AND ACTS. In connection with this Agreement,  as
well as all transactions  contemplated by this Agreement, each Partner agrees to
execute and deliver such additional  documents and  instruments,  and to perform
such additional acts as may be necessary or appropriate to effectuate, carry out
and perform all of the terms,  provisions and conditions 


                                       57
<PAGE>


of this  Agreement,  and all  such  transactions.  All  approvals  of a  Partner
hereunder shall be in writing.

     12.3 GOVERNING  LAW. THIS AGREEMENT  SHALL BE GOVERNED BY AND CONSTRUED AND
ENFORCED IN ACCORDANCE WITH THE LAWS OF THE STATE OF DELAWARE  WITHOUT REGARD TO
CONFLICTS OF LAW.

     12.4  SEVERABILITY.  If this  Agreement  or any portion  thereof is, or the
operations contemplated hereby are, found to be inconsistent with or contrary to
any  valid  applicable  laws or  official  orders,  rules and  regulations,  the
inconsistent or contrary provisions of this Agreement shall be null and void and
such laws, orders, rules and regulations shall control and this Agreement, as so
modified,  shall  continue in full force and  effect;  PROVIDED,  HOWEVER,  that
nothing herein contained shall be construed as a waiver of any right to question
or  contest  any  such  law,  order,  rule or  regulation  in any  forum  having
jurisdiction.

     12.5 BINDING EFFECT. Except as herein otherwise expressly stipulated to the
contrary,  this Agreement  shall be binding upon and inure to the benefit of the
parties signatory hereto and their respective successors and assigns.

     12.6  AGREEMENT  RESTRICTED TO PARTNERS.  This  Agreement is solely for the
parties hereto and no covenant or other provision herein shall create any rights
in, or give rise to any  obligation to or any cause of action by, any person not
a party hereto.

     12.7  COUNTERPARTS.   This  Agreement  may  be  executed  in  a  number  of
counterparts,  each of which shall be deemed an original  and all of which shall
constitute one and the same Agreement.

     12.8 POWER OF ATTORNEY;  AMENDMENTS.  Each of the Limited  Partners  hereby
makes,  constitutes  and appoints  each  General  Partner as its true and lawful
attorney,  to make,  sign,  execute,  acknowledge  and file with  respect to the
Partnership;

          (a)  such  Certificates  of  Limited   Partnership  and  such  amended
     Certificates of Limited  Partnership and such assumed name certificates and
     amendments  thereto as may be required by law or pursuant to the provisions
     of this Agreement;

          (b) all documents  required to qualify the  Partnership to do business
     in other states;

          (c)  documents of transfer of Interests and all other  instruments  to
     effect said  transfers in the event the  provisions of this  Agreement have
     been complied with; and

          (d) all documents  required to reflect the dissolution and termination
     of the Partnership  after it has been dissolved or terminated in accordance
     herewith.

     The foregoing power of attorney is hereby declared to be irrevocable and is
a power  coupled with an interest,  and it shall  survive and not be affected by
the subsequent death, incompetency, legal disability,  withdrawal,  dissolution,
bankruptcy,  insolvency or  termination


                                       58
<PAGE>



of any Partner or the transfer of all or any portion of an  Interest,  and shall
extend to each Partner's heirs, legal representatives, successors and assigns.

     Any other  amendments  to this  Agreement may be made only with the written
approval of the General Partners and the Limited Partners.

     12.9 NOTICES.  All notices and demands provided for in this Agreement shall
be in writing and shall be given to the other  Partners by hand, by telegram (or
telefax),  or by United States  Registered or Certified Mail,  postage  prepaid,
return  receipt  requested,  to the  addresses  set forth below or to such other
addresses as any Partner hereto may hereafter specify in writing:


         If to any member           c/o Shell Oil Company
         of the Shell Partner       One Shell Plaza
         Group:                     900 Louisiana, Room 4401A
                                    Houston, Texas 77002
                                    Attn:   Mr. Jack E. Little
                                    Telecopier: (713) 241-6946

         If to any member           c/o Tejas Gas Corporation
         of the Tejas Partner       1301 McKinney, Suite 700
         Group:                     Houston, Texas 77010
                                    Attn:  James W. Whalen
                                    Telecopier:  (713) 658-9600

         With a copy to:            Coral Energy Resources, L.P.
                                    909 Fannin St., Suite 700
                                    Houston, Texas  77010
                                    Attn:  Murry Gerber

         With a copy to:            Akin, Gump, Strauss, Hauer & Feld, L.L.P.
                                    Pennzoil Place-South Tower
                                    711 Louisiana Street
                                    Suite 1900
                                    Houston, Texas  77002
                                    Attn: Rick L. Burdick, P.C.
                                    Telecopier: (713) 236-0822

     Each notice or demand  given by hand shall be  effective as of its delivery
to the other  Partners as so provided.  Each notice given by telegram or telefax
shall  be  effective  as of the  date on  which  such  telegram  or  telefax  is
transmitted  and  confirmation of delivery  thereof is received.  Each notice or
demand given by mail shall be deemed  delivered  and effective on the earlier to
occur of (a) the date of  delivery  as shown by the return  receipt or (b) three
(3) Business Days after the mailing  thereof in accordance  with the  provisions
hereof.  Any Partner may change its address for purposes of receiving notices by
giving notice thereof to the other Partners as provided in this ARTICLE XII.


                                       59

<PAGE>

     12.10 BINDING ARBITRATION.

     Any  controversy  or claim  ("claim"),  whether  based on  contract,  tort,
statute or other legal or  equitable  theory  (including  but not limited to any
claim of fraud,  misrepresentation  or fraudulent  inducement or any question of
validity or effect of this Agreement  including  this clause)  arising out of or
related to this  Agreement  (including  any  amendments or  extensions),  or the
breach or termination thereof shall be settled by arbitration in accordance with
the then current CPR Institute for Dispute Resolution Rules for Non-Administered
Arbitration of Business Disputes,  and this provision.  The arbitration shall be
governed  by the  United  States  Arbitration  Act, 9 U.S.C.  ss.ss.1-16  to the
exclusion of any  provision of state law  inconsistent  therewith or which would
produce  a  different  result,  and  judgment  upon the  award  rendered  by the
arbitrator may be entered by any court having jurisdiction.

     The arbitration shall be held in Houston, Texas.

     There shall be one arbitrator.

     The arbitrator shall determine the claims of the parties and render a final
award in accordance with the substantive law of the State of Delaware, excluding
the conflicts provisions of such law. The arbitrator shall set forth the reasons
for the award in writing.

     Any claim by either  party  shall be  time-barred  if the  asserting  party
commences  arbitration with respect to such claim later than two years after the
cause of action  accrues.  All statutes of  limitations  and defenses based upon
passage  of time  applicable  to any claim of  defending  party  (including  any
counterclaim or setoff) shall be tolled while the arbitration is pending.

     The  obligation  to  arbitrate  any claim shall  extend to the  successors,
assigns and Third Party  beneficiaries  of the  parties.  The parties  shall use
their best efforts to cause the  obligation  to arbitrate any claim to extend to
any officer,  director,  employee,  shareholder,  agent, trustee,  affiliate, or
subsidiary.  The terms  hereof  shall not  limit any  obligations  of a party to
defend,  indemnify or hold harmless  another party against court  proceedings or
other claims, losses, damages or expenses.

     The arbitrator  shall order the parties to promptly  exchange copies of all
exhibits  and witness  lists,  and, if requested  by a party,  to produce  other
relevant documents, to answer up to ten interrogatories (including subparts), to
respond to up to ten requests for admissions  (which shall be deemed admitted if
not denied) and to produce for deposition and, if requested,  at the hearing all
witnesses  that such party has listed and up to four other  persons  within such
party's control.  Any additional  discovery shall only occur by agreement of the
parties or as ordered by the arbitrator upon a finding of good cause.

     Each party shall bear its own costs, expenses and attorney's fees; provided
that  if  court  proceedings  to  stay  litigation  or  compel  arbitration  are
necessary,  the party who unsuccessfully  opposes such proceedings shall pay all
reasonable  associated costs,  expenses,  and attorney's fees in connection with
such court proceeding.


                                       60
<PAGE>


     In order to prevent  irreparable  harm, the arbitrator shall have the power
to grant temporary or permanent  injunctive or other equitable relief.  Prior to
the  appointment  of an  arbitrator  a  party  may,  notwithstanding  any  other
provision of this Agreement,  seek temporary injunctive relief from any court of
competent  jurisdiction;  provided  that the party seeking such relief shall (if
arbitration has not already been commenced) simultaneously commence arbitration.
Such  court  ordered  relief  shall not  continue  more  than 10 days  after the
appointment of the arbitrator (or in any event for longer than 60 days).

     If any part of this arbitration  provision is held to be unenforceable,  it
shall be severed and shall not affect  either the duty to arbitrate or any other
part of this provision.

     12.11 CONFIDENTIAL INFORMATION.

          (a) For the purpose of this SECTION 12.11.  "Confidential Information"
     shall mean:

               (i) any  knowledge,  information,  technical  data  or  know  how
          supplied by any Partner or its Affiliates (the "Disclosing  Partner"),
          including,  for the avoidance of doubt, Non-U.S.  Shell Affiliate,  to
          one  or  more  of  the  other  Partners  or to  the  Partnership  (the
          "Receiving Partner")  concerning the Disclosing Partner's  proprietary
          information; and

               (ii) any  information  relating to the business of any Partner or
          of an Affiliate of any Partner (including, for the avoidance of doubt,
          Non-U.S.  Shell Affiliates),  of which a Partner learns as a result of
          its involvement with the Partnership;

               In each case whether in writing,  drawings, and computer programs
          or in any  other  way as  well  as all  data  derived  therefrom.  The
          Partners  agree  to  procure   between  them  the  compliance  of  the
          Partnership with the provisions of this SECTION 12.11.

          (b) Each  Disclosing  Partner  warrants  to the  other  that it is the
     licensee or proprietor of the Confidential  Information disclosed by it and
     is authorized to disclose it on the terms of this Agreement.

          (c)  Each  Partner   undertakes,   and  agrees  to  procure  that  the
     Partnership will undertake,  both during the continuance of the Partnership
     and, in the case of the Partners only, for a period of ten years  following
     its  termination  for any  reason  and  other  than in  respect  of its own
     Confidential Information:

               (i) To keep  confidential  and in safe  custody all  Confidential
          Information  and not to disclose  to any Third Party any  Confidential
          Information  except with the prior written  consent of the  Disclosing
          Partner or its Affiliate.

               (ii) To limit access to Confidential  Information to those of its
          employees who reasonably  require such information for the purposes of
          the Partnership's  business,  to inform each employee of the foregoing
          restrictions  as


                                       61
<PAGE>


          to  the  confidentiality,  disclosure  and  use of  such  Confidential
          Information  and to insure that each such employee  shall observe such
          restrictions;

               (iii) To insure  that any Third  Party to which any  Confidential
          Information  is  disclosed  pursuant  to (a) above shall keep the same
          confidential,  shall not disclose it to any other Third  Party,  shall
          not use such  information  other  than for the  purposes  to which the
          Disclosing  Partner or its  Affiliate  has given its consent and shall
          comply  with  such  restrictions  as  the  Disclosing  Partner  or its
          Affiliate may impose in giving its consent pursuant to (a) above.

          (d) The foregoing  restrictions  concerning  confidentiality shall not
     apply to any Confidential  Information which is or becomes public knowledge
     otherwise  than by  default  on the part of the  Partnership  or one of the
     Receiving  Partners  or  which  is or  becomes  lawfully  available  to the
     Partnership or the Receiving Partners otherwise than directly or indirectly
     from the Disclosing  Partner or its  Affiliates and without  restriction on
     the  Partnership  or the  Receiving  Partnership  against  subsequent  use,
     duplication or disclosure.

          (e) In the event that the  Receiving  Partner is  requested or becomes
     legally  compelled  (by  oral  questions,  interrogatories,   requests  for
     information or documents,  subpoena, civil investigations demand or similar
     process) to disclose any Confidential  Information,  the Receiving  Partner
     agrees that it shall  provide the  Disclosing  Partner with prompt  written
     notice of such request,  including identifying  information about the legal
     proceeding and the parties thereto, so that the Disclosing Partner may seek
     a protective order or other appropriate remedy and/or waive compliance with
     the provisions of this Agreement.  In the event that such protective  order
     or other remedy is not obtained, the Receiving Partner agrees that it shall
     furnish only that portion of the Confidential  Information which is legally
     required and shall exercise its best efforts to obtain  reliable  assurance
     that   confidential   treatment  shall  be  accorded  to  the  Confidential
     Information which is disclosed in such manner.

     12.12 WAIVER OF CONSEQUENTIAL AND PUNITIVE DAMAGES.

     No party to this Agreement shall be liable to any other party for indirect,
consequential  or  punitive  damages  resulting  from  or  arising  out of  this
Agreement  including,  but not  limited  to,  loss of use of  property,  loss of
profits, loss of products or business interruption.

     12.13  CONFLICTS  WITH  INITIAL  AGREEMENTS.  In the event of any  conflict
between any provision of this  Agreement and any provision of any of the Initial
Agreements, the provisions of this Agreement shall prevail.


                                       62
<PAGE>


         IN WITNESS WHEREOF,  the parties hereto have executed this Agreement as
of the date and year first above written.

Shell Gas Marketing Company                     Tejas Alliance GP Company


By:  /S/ JACK E. LITTLE                         By:  /S/ JAY A. PRECOURT
Title:  President                               Title:  Chief Executive Officer



Shell Gas Trading Company                       Tejas Alliance Energy Company


By: /S/ JACK E. LITTLE                         By: /S/  BARBARA A. STEEN
Title:  Authorized Representative               Title:  Vice President



Shell Gas Investment Company                    Tejas Alliance Resources Company


By:  /S/ JACK E. LITTLE                         By:  /S/ BARBARA A. STEEN
Title:  President                               Title:  Vice President



Shell Offshore Inc.                             Tejas Gas Corp.


By:  /S/ JACK E. LITTLE                         By:  /S/ CHARLES R. CRISP
Title:  President                               Title:  President



Shell Western E&P Inc.                          Tejas-Gulf Corporation


By:  /S/ JACK E. LITTLE                         By:  /S/ CHARLES R. CRISP
Title:  President                               Title:  President


                                       63
<PAGE>


Tejas Gas Transmission Company                  Tejas Hydrocarbons Company


By:  /S/  CHARLES R. CRISP                      By:  /S/ CHARLES R. CRISP
Title:  President                               Title:  President



Gulf Energy Pipeline Company                    Gulf Energy Marketing Company


By: /S/  CHARLES R. CRISP                       By:  /S/ CHARLES R. CRISP
Title:  President                              Title:  President



LEDCO Inc.                                      Louisiana State Gas Corporation


By: /S/  JAMES W. WHALEN                        By:  /S/  JAMES W. WHALEN
Title: Executive Vice President                 Title: Executive Vice President



Acadian Gas Pipeline System                  Pontchartrain Natural Gas System

  By:  TXO-Acadian Gas Pipeline Corp.        By:  TXO-Acadian Gas Pipeline Corp.
  Title:  General Partner                    Title:  General Partner


   By:  /S/ JAMES W. WHALEN                     By:  /S/ JAMES W. WHALEN
   Title: Executive Vice President              Title:  Executive Vice President

  By:  MCN Acadian Gas Pipeline Corp.        By:  MCN Acadian Gas Pipeline Corp.
  Title:  General Partner                    Title:  General Partner


   By: /S/ JAMES W. WHALEN                      By:  /S/ JAMES W. WHALEN
   Title: Executive Vice President              Title:  Executive Vice President


                                       64
<PAGE>


Calcasieu Gas Gathering System               Spindletop Gas Distribution System

  By:  TXO-Acadian Gas Pipeline Corp.        By:  TXO-Acadian Gas Pipeline Corp.
  Title:  General Partner                    Title:  General Partner


     By: /S/ JAMES W. WHALEN                 By:  /S/  JAMES W. WHALEN
     Title: Executive Vice President         Title: Executive Vice President

  By:  MCN Acadian Gas Pipeline Corp.        By:  MCN Acadian Gas Pipeline Corp.
  Title:  General Partner                    Title:  General Partner


     By: /S/  JAMES W. WHALEN                By:  /S/  JAMES W. WHALEN
     Title:  Executive Vice President        Title:  Executive Vice President



Cypress Gas Pipeline Company                 Cypress Gas Marketing Company


By:  /S/ JAMES W. WHALEN                     By:  /S/ JAMES W. WHALEN
Title: Executive Vice President              Title:  Executive Vice President



Tejas Gas Marketing Company                  Tejas Gas Pipeline Company


By:  /S/ CHARLES R. CRISP                    By:  /S/ CHARLES R. CRISP
Title:  President                            Title:  President


     The  undersigned  have  executed this  Agreement  solely for the purpose of
confirming  their agreement to SECTIONS 3.9, 8.1, 8.3, 8.4, 8.7, 8.12, 12.1, AND
12.13 hereof.

SHELL OIL COMPANY                            TEJAS GAS CORPORATION


By:  /S/  JACK E. LITTLE                     By:  /S/ JAY A. PRECOURT
Title:  Executive Vice President             Title:  Chief Executive Officer
        Exploration & Production


PAL.0995\LPA.25

                                       65
<PAGE>

CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)

                                    EXHIBIT A


                                   INITIAL CAPITAL              PARTNERSHIP
NAME                               CONTRIBUTION                 PERCENTAGES

GENERAL PARTNERS

Shell Gas Marketing Company               *                        0.66-2/3%
("Shell GP")

Tejas Alliance GP Company                 *                        0.33-1/3%
("Tejas GP")

LIMITED PARTNERS

Shell Gas Investment Company              *                        3.4786%
("Shell LP2")

Tejas Alliance Resources Company          *                        1.7468%
("Tejas LP2")

Shell Gas Trading Company                 *                       47.9117%
("Shell LP1" after November 1, 1995)

Tejas Alliance Energy Company             *                    not applicable
("Tejas LP1" after December 31, 1995)


The  following  companies,  together 
with Shell Gas Trading  Company,  comprise
"SHELL LP1" UNTIL NOVEMBER 1, 1995:

Shell Offshore Inc.                       *                       11.3700%

Shell Western E&P Inc.                    *                        3.2397%


The following companies comprise
TEJAS LP1" UNTIL DECEMBER 31, 1995:

Tejas Gas Corp.                           *                        0.0014%

Tejas-Gulf Corporation                    *                        0.2556%

Tejas Hydrocarbons Company                *                        1.1452%

Gulf Energy Pipeline Company              *                        0.9212%

Gulf Energy Marketing Company             *                        1.6857%

LEDCO Inc.                                *                        0.0176%

Louisiana State Gas Corporation           *                        0.0817%


                            EXHIBIT A - Page 1 of 2
<PAGE>


CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)


Acadian Gas Pipeline System               *                        0.0032%

Pontchartrain Natural Gas System          *                       14.4513%

Calcasieu Gas Gathering System            *                        0.5827%

Spindletop Gas Distribution System        *                        0.9185%

Cypress Gas Pipeline Company              *                        1.0289%

Cypress Gas Marketing Company             *                        0.3148%

Tejas Gas Marketing Company               *                        9.6323%

Tejas Gas Pipeline Company                *                        0.0000%

Tejas Gas Transmission Company            *                        0.2131%


TOTAL                                                                100%

   ---------------------

     * Those Shell LP1 Economic Interest  Contributions  identified on EXHIBIT C
to the Agreement that belong to such limited partner,  having a Net Agreed Value
of * in  the  aggregate  for  all  Shell  LP1  Economic  Interest  Contributions
contributed by all contributing entities.

     ** Those Tejas LP1 Economic Interest Contributions  identified on EXHIBIT D
to the Agreement that belong to such limited partner,  having a Net Agreed Value
of * in  the  aggregate  for  all  Tejas  LP1  Economic  Interest  Contributions
contributed by all contributing entities.

     *** Those Tejas LP1 Economic Interest Contributions identified on EXHIBIT D
to the Agreement that belong to G C Marketing Company and that are distributable
to Tejas Gas Transmission  Company on account of its partnership interest in G C
Marketing Company (consisting of approximately 70% interest in the G C Marketing
Company earnings and distributions).



                             EXHIBIT A - Page 2 of 2


<PAGE>

                                    EXHIBIT B


                               INITIAL AGREEMENTS


1.   Gas Sale and Purchase Contract dated as of November 1, 1995, by and between
     Tejas Gas Corp., as Seller, and the Partnership, as Buyer.

2.   Gas Sale and Purchase Contract dated as of November 1, 1995, by and between
     Acadian Gas Corporation, as Seller, and the Partnership, as Buyer.

3.   Gas Sale and Purchase Contract dated as of November 1, 1995, by and between
     SWEPI, as Seller, and the Partnership, as Buyer.

4.   Gas Sale and Purchase Contract dated as of November 1, 1995, by and between
     Shell Frontier Oil & Gas Inc. ("SFOGI"), as Seller, and the Partnership, as
     Buyer.

5.   Gas Sale and Purchase Contract dated as of November 1, 1995, by and between
     SOI, as Seller, and the Partnership, as Buyer.

6.   Sales Administration Agreement dated as of November 1, 1995, by and between
     the Partnership and SOI,  pursuant to which the Partnership  will receive a
     services fee in respect of natural gas volumes of SOI.

7.   Gas Purchase and Sale and Administration  Agreement dated as of November 1,
     1995,  by and  between  the  Partnership  and SGTC,  pursuant  to which the
     Partnership will sell natural gas to SGTC.

8.   Sales Administration Agreement dated as of November 1, 1995, by and between
     the Partnership and SWEPI, pursuant to which the Partnership will receive a
     services fee in respect of natural gas volumes of SWEPI.

9.   Sales Administration Agreement dated as of November 1, 1995, by and between
     the  Partnership  and  SMACKOVER  Shell  Limited,  pursuant  to  which  the
     Partnership  will  receive a services fee in respect of natural gas volumes
     of SMACKOVER Shell Limited.



<PAGE>

                                    EXHIBIT C


                    SHELL LP1 ECONOMIC INTEREST CONTRIBUTIONS

Except for the exclusions described in Section 3.1 of each Gas Sale and Purchase
Contract,  with a Shell Partner  Group  entity,  that is identified on Exhibit B
hereto, all contracts of SGTC, SOI, SWEPI, SFOGI, and other members of the Shell
Partner Group as set forth on Exhibit C-2 will be contributed to the Partnership
or the economic benefit thereof in excess of applicable market index prices will
be  contributed  through  assignment  of a net  profits  interest  or  through a
marketing fee. Without limiting the foregoing, in particular,  the Shell Partner
Group:

1.   has  attached  as  Exhibit  C-2  a  list  of  those  agreements  which  are
     contributed to the Partnership  hereunder effective November 1, 1995. Those
     agreements  which are  indicated  on Exhibit  C-2 as not to be  assigned or
     which  are  not  assignable  will  be  handled  by  the  Partnership  as an
     independent contractor.

2.   will terminate  existing SGTC gas purchase  agreements with SOI, SWEPI, and
     any other relevant Shell Affiliates on or before November 1, 1995.

3.   will  address  the  existing  Norstar  and  Redwood  arrangements  prior to
     November  1,  1995,  by  the  contribution  to  the  Partnership  of  their
     partnership  interests  in Norstar  and  Redwood (or the stock of the Shell
     partners in the  partnerships).  To the extent  that there are  third-party
     consents  required that cannot be obtained,  then the economic benefit will
     be contributed and control transferred.

4.   has attached Exhibits to the Services  Administration  Agreements effective
     November 1, 1995 listed on Exhibit B indicating  contracts  not assigned or
     not assignable for which the economic benefit accrues to the Partnership.

5.   will transfer the SGTC Risk Book and risk management position in respect of
     its hedging position to the Partnership as of November 1, 1995.


<PAGE>

CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)

                      EXHIBIT C-2 TO PARTNERSHIP AGREEMENT


NAME           CUSTOMER            CONTRACT CODE            ASSIGNMENT

SGTC                                                             Y
SGTC                                                             Y
SGTC                *                   *                        Y
SGTC                                                             N
SGTC                                                             N
SGTC                                                             Y
SGTC                                                             N
SGTC                                                             N
SGTC                                                             N
SGTC                                                             N
SGTC                                                             N
SGTC                                                             N
SGTC                                                             N
SGTC                                                             N
SGTC                                                             N
SGTC                                                             N
SGTC                                                             N
SGTC                                                             N
SGTC                                                             N
SGTC                                                             Y
SGTC                                                             N
SGTC                                                             N
SGTC                                                        N(ASSIGN TO SWEPI)

          "Y" in the Assignment column means an attempt will be made:



OCTOBER 31, 1995
                                      C-1

<PAGE>

CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)

                      EXHIBIT C-2 TO PARTNERSHIP AGREEMENT


NAME           CUSTOMER            CONTRACT CODE            ASSIGNMENT

SGTC                                                             Y
SGTC                                                             N
SGTC                *                   *                        N
SGTC                                                             Y
SGTC                                                             Y
SGTC                                                             Y
SGTC                                                             Y
SGTC                                                             Y
SGTC                                                             N
SGTC                                                             N
SGTC                                                             Y
SGTC                                                             Y
SGTC                                                             Y
SGTC                                                             Y
SGTC                                                             Y
SGTC                                                             Y
SGTC                                                             Y
SGTC                                                             Y
SGTC                                                        N(ASSIGN TO SWEPI)
SGTC                                                             Y
SGTC                                                             Y
SGTC                                                             Y

          "Y" in the Assignment column means an attempt will be made:


OCTOBER 31, 1995
                                      C-2

<PAGE>

CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)

                      EXHIBIT C-2 TO PARTNERSHIP AGREEMENT


NAME           CUSTOMER            CONTRACT CODE            ASSIGNMENT

SGTC                                                             Y
SGTC                                                             N
SGTC                *                   *                        N
SGTC                                                             N
SGTC                                                             N
SGTC                                                             Y
SGTC                                                             N
SGTC                                                             Y
SGTC                                                             Y
SGTC                                                             Y
SGTC                                                             Y
SGTC                                                             Y
SGTC                                                             Y
SGTC                                                             Y
SGTC                                                             Y
SGTC                                                             Y
SGTC                                                             Y
SGTC                                                             Y
SGTC                                                             Y
SGTC                                                             Y
SGTC                                                        N(ASSIGN TO SWEPI)
SGTC                                                             N
SGTC                                                             Y
SGTC                                                             Y
SGTC                                                             Y

          "Y" in the Assignment column means an attempt will be made:


OCTOBER 31, 1995
                                      C-3

<PAGE>

CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)

                      EXHIBIT C-2 TO PARTNERSHIP AGREEMENT


NAME           CUSTOMER            CONTRACT CODE            ASSIGNMENT

SOI                                                             Y
SOI                                                             N
SOI                *                   *                        N
SOI                                                             N
SOI                                                             N
SOI                                                             N
SOI                                                             N
SOI                                                             N
SOI                                                             N
SOI                                                             N
SOI                                                             N
SOI                                                             N
SWEPI                                                           N
SWEPI                                                           N
SWEPI                                                           N
SWEPI                                                           N
SWEPI                                                           N
SWEPI                                                           N

          "Y" in the Assignment column means an attempt will be made:


OCTOBER 31, 1995
                                      C-4

<PAGE>


CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)

                    EXHIBIT C-3 TO THE PARTNERSHIP AGREEMENT

                                     NORSTAR

I.   The  following  special  true-up  mechanism  modifies the one  described in
     SECTION 3.3(b) of the Agreement for NORSTAR since its  contribution  is net
     income before taxes (hereinafter, "Earnings"), not cash.

II.  The approximate net present value of NORSTAR's Earnings is $  * .

III. NORSTAR's Earnings are projected as follows:

                  YEAR                      AMOUNT ($MM)-UNDISCOUNTED
                  ----                      -------------------------
                  1995                             *
                  1996                             *
                  1997                             *
                  1998                             *
                  1999                             *
                  2000-2004                        per year

IV.  For years  1995-1998,  Shell will true-up  against the Earnings in schedule
     III (hereinafter  "Schedule")  above, with cash if NORSTAR does not achieve
     the Earnings in the Schedule.

          A.   All  Earnings  above the  Schedule  are  "banked" by Coral Energy
               Resources, L.P. (hereinafter "Coral") for Shell's credit.

          B.   Banked  excess  Earnings  may not be used to offset  an  Earnings
               shortfall in future years (i.e.  each year is trued-up on a stand
               alone basis,  comparing  Earnings  per Schedule to actual  annual
               NORSTAR  Earnings).  Banked excess Earnings shall be treated as a
               liability  of  Coral  to the  applicable  Shell  Partner  and not
               recorded in that Shell Partner's Capital Account.

          C.   When NORSTAR  distributions  except for tax  distributions  (such
               distributions,   excluding  tax  distributions,  are  hereinafter
               referred  to  as  "Distributions")  are  made,  then  Coral  will
               distribute  the  Distributions  to Shell to the extent of Shell's
               "banked" excess Earnings over the Schedule.

V.   For years  1999-2004,  Shell is still  obligated  to true-up  any  Earnings
     shortfall as projected in the Schedule above with cash.

          A.   All Earnings above the Schedule accrue to Coral.

          B.   Any  Distributions   applicable  to  any  "banked"  Shell  excess
               Earnings for 1995-1998 will be distributed by Coral to Shell.

<PAGE>


                EXHIBIT C-3 TO THE PARTNERSHIP AGREEMENT, PAGE 2


          C.   All Distributions in excess of Shell's 1995-1998  "banked" excess
               Earnings entitlement accrue to Coral.

VI.  For years 2005 and beyond, Shell does not true-up Earnings by NORSTAR.

          A.   Coral gets the benefit of all Earnings  (or the  detriment of any
               losses) accruing to the ownership of NORSTAR.

          B.   Any  Distributions   applicable  to  any  "banked"  Shell  excess
               Earnings for 1995-1998 will be distributed by Coral to Shell.

          C.   All Distributions in excess of Shell's 1995-1998  "banked" excess
               Earnings entitlement accrue to Coral.

VII. If  NORSTAR  or any part of  NORSTAR  is sold,  net sales  proceeds  (sales
     proceeds less all costs  incident to the sale) will be  distributed  in the
     following order:

          A.   Shell  gets net  sale  proceeds  to the  extent  of its  "banked"
               Earnings.

          B.   Coral  gets net sale  proceeds  to the  extent of the  cumulative
               undistributed  Earnings  less the  Shell  "banked"  Earnings.  In
               addition, Coral will receive a ten percent return through date of
               sale  on the  undistributed  Earnings  accumulated  from  11/1/95
               through the earlier of 12/31/98 or date of sale.

          C.   Shell gets NPV credit against its remaining  true-up  obligations
               shown in the Schedule.

          D.   Coral  gets  remaining  funds over and above  Shell's  obligation
               shown in the Schedule.


<PAGE>

CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)


                                    EXHIBIT D


                    TEJAS LP1 ECONOMIC INTEREST CONTRIBUTIONS


     CONTRACT            SECOND                   CONTRACT
      NUMBER            CONTRACT                     NAME

        *                  *                           *




                            EXHIBIT D - PAGE 1 OF 4

<PAGE>

CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)


                                    EXHIBIT D


                    TEJAS LP1 ECONOMIC INTEREST CONTRIBUTIONS


     CONTRACT            SECOND                   CONTRACT
      NUMBER            CONTRACT                     NAME

        *                  *                           *


                            EXHIBIT D - PAGE 2 OF 4

<PAGE>

CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)


                                    EXHIBIT D


                    TEJAS LP1 ECONOMIC INTEREST CONTRIBUTIONS


     CONTRACT            SECOND                   CONTRACT
      NUMBER            CONTRACT                     NAME

        *                  *                           *



                            EXHIBIT D - PAGE 3 OF 4


<PAGE>

CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)


                                    EXHIBIT D


                    TEJAS LP1 ECONOMIC INTEREST CONTRIBUTIONS


     CONTRACT            SECOND                   CONTRACT
      NUMBER            CONTRACT                     NAME

        *                  *                           *



                            EXHIBIT D - PAGE 4 OF 4

<PAGE>

CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)


                                    EXHIBIT E

      PROJECTED SALES MARGINS OF SHELL LP1 ECONOMIC INTEREST CONTRIBUTIONS

                           MARGIN         NORSTAR        TOTAL
     PERIOD              EX-NORSTAR       EARNINGS      FOR PERIOD

11/1-12/31/95
     1996
     1997
     1998
     1999                              *
     2000
     2001
     2002
     2003
     2004
     2005
     2006
     2007
     2008
     2009
     2010



                            EXHIBIT E - PAGE 1 OF 1


<PAGE>

CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)


                                   EXHIBIT F

      PROJECTED SALES VOLUMES OF TEJAS LP1 ECONOMIC INTEREST CONTRIBUTIONS

                                        AGGREGATE
     PERIOD                              VOLUMES


11/1-12/31/95
     1996
     1997
     1998
     1999                                   *
     2000
     2001
     2002
     2003
     2004
     2005
     2006
     2007
     2008
     2009
     2010


                            EXHIBIT F - PAGE 1 OF 1


<PAGE>

CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)


                                    EXHIBIT G

                              INITIAL BUSINESS PLAN


SHELL/TEJAS ALLIANCE BUSINESS PLAN                     PAGE 1 OF 2
AS OF AUGUST 1, 1995  (START-UP DATE)                  07/14/95


                         *


<PAGE>


CONFIDENTIAL   TREATMENT   (NOTE:  *  INDICATES   OMITTED   MATERIAL  FOR  WHICH
CONFIDENTIAL  TREATMENT  HAS BEEN  REQUESTED.  ALL SUCH  MATERIAL HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.)


                                    EXHIBIT G

                              INITIAL BUSINESS PLAN


SHELL/TEJAS ALLIANCE BUSINESS PLAN                                 PAGE 2 OF 2
GROSS PROFIT SUMMARY - PHYSICAL VOLUMES AND MARGINS                  07/14/95


                         *



<PAGE>


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