BELCO OIL & GAS CORP
SC 13D, 1998-10-08
CRUDE PETROLEUM & NATURAL GAS
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<PAGE>   1
                       SECURITIES AND EXCHANGE COMMISSION
                            Washington, D. C. 20549

                                  SCHEDULE 13D
                   Under the Securities Exchange Act of 1934
                               (Amendment No. )*

                             BELCO OIL & GAS CORP.
                             ---------------------
                                (Name of Issuer)

                          COMMON STOCK, $.01 PAR VALUE
                          ----------------------------
                         (Title of Class of Securities)

                                  077410 10 8
                                  -----------
                                 (CUSIP Number)

                              Julia Heintz Murray
                            General Counsel, Finance
                     Enron Capital & Trade Resources Corp.
                               1400 Smith Street
                               Houston, TX 77002
                                 (713) 853-6161
                                 --------------
                 (Name, Address and Telephone Number of Person
               Authorized to Receive Notices and Communications)

                               September 28, 1998
                               ------------------
                      (Date of Event which Requires Filing
                               of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report
the acquisition which is the subject of this Schedule 13D, and is filing this
schedule because of ss.ss.240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the
following box: /_/

NOTE: Schedules filed in paper format shall include a signed original and five 
copies of the schedule, including all exhibits.  See ss.240.13d-7(b) for other 
parties to whom copies are to be sent.

*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities,
and for any subsequent amendment containing information which would alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 ("Act") or otherwise subject to the liabilities of that section of
the Act but shall be subject to all other provisions of the Act (however, see
the Notes).





<PAGE>   2



                                    SCHEDULE
                                      13D

- -------------------------------------------------------------------------------
1       NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

        ENRON CORP.
- -------------------------------------------------------------------------------
2       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP           (a) /_/
                                                                   (b) /X/
                                                                   
- -------------------------------------------------------------------------------
3       SEC USE ONLY

- -------------------------------------------------------------------------------
4       SOURCE OF FUNDS

        OO
- -------------------------------------------------------------------------------
5       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO 
        ITEMS 2(d) OR 2(e) /_/

- -------------------------------------------------------------------------------
6       CITIZENSHIP OR PLACE OF ORGANIZATION

        Oregon
- -------------------------------------------------------------------------------
   NUMBER OF   | 7        SOLE VOTING POWER
               |  
     SHARES    |          0
  BENEFICIALLY | --------------------------------------------------------------
               | 8        SHARED VOTING POWER      
    OWNED BY   |                                     
      EACH     |          1,666,667*               
               | --------------------------------------------------------------
   REPORTING   | 9        SOLE DISPOSITIVE POWER   
     PERSON    |                                   
               |          0                        
      WITH     | --------------------------------------------------------------
               | 10       SHARED DISPOSITIVE POWER 
               |                                  
               |          1,666,667*                      
- -------------------------------------------------------------------------------

11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         1,666,667*
- -------------------------------------------------------------------------------
12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

         N/A
- -------------------------------------------------------------------------------
13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         5.0% **
- -------------------------------------------------------------------------------
14       TYPE OF REPORTING PERSON
         CO
- -------------------------------------------------------------------------------
*  Represents shares of Common Stock initially issuable upon exercise of 
   Warrants of Belco Oil & Gas Corp. described herein.
** Based on information contained in the Form 10-Q of Belco Oil & Gas Corp. 
   for the Quarter ended June 30, 1998 as of June 30, 1998.


<PAGE>   3

                                    SCHEDULE
                                      13D

- -------------------------------------------------------------------------------
1       NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

        JOINT ENERGY DEVELOPMENT INVESTMENTS LIMITED PARTNERSHIP
- -------------------------------------------------------------------------------
2       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP           (a) /_/
                                                                   (b) /X/
                                                                   
- -------------------------------------------------------------------------------
3       SEC USE ONLY

- -------------------------------------------------------------------------------
4       SOURCE OF FUNDS

        OO
- -------------------------------------------------------------------------------
5       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO 
        ITEMS 2(d) OR 2(e) /_/

- -------------------------------------------------------------------------------
6       CITIZENSHIP OR PLACE OF ORGANIZATION

        Delaware        
- -------------------------------------------------------------------------------
   NUMBER OF   | 7        SOLE VOTING POWER
               |  
     SHARES    |          0
  BENEFICIALLY | --------------------------------------------------------------
               | 8        SHARED VOTING POWER      
    OWNED BY   |                                     
      EACH     |          1,666,667               
               | --------------------------------------------------------------
   REPORTING   | 9        SOLE DISPOSITIVE POWER   
     PERSON    |                                   
               |          0                        
      WITH     | --------------------------------------------------------------
               | 10       SHARED DISPOSITIVE POWER 
               |                                  
               |          1,666,667                      
- -------------------------------------------------------------------------------

11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         1,666,667*
- -------------------------------------------------------------------------------
12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

         N/A
- -------------------------------------------------------------------------------
13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         5.0% **
- -------------------------------------------------------------------------------
14       TYPE OF REPORTING PERSON
         PN
- -------------------------------------------------------------------------------
*  Represents shares of Common Stock initially issuable upon exercise of 
   Warrants of Belco Oil & Gas Corp. described herein.
** Based on information contained in the Form 10-Q of Belco Oil & Gas Corp. 
   for the Quarter ended June 30, 1998 as of June 30, 1998.


<PAGE>   4

                           STATEMENT ON SCHEDULE 13D

Note: All information herein with respect to Belco Oil & Gas Corp., a Nevada
corporation (the "Issuer"), is to the best knowledge and belief of the
Reporting Entities (as defined herein).

Item 1.        Security and Issuer.

     This statement relates to the shares of common stock, $.01 par value
("Common Stock"), of Belco Oil & Gas Corp. The address of the principal
executive office of the Issuer is 767 Fifth Avenue, New York, New York 10153.

Item 2.        Identity and Background.

     This statement is being filed by Enron Corp., an Oregon corporation
("Enron"), which is an integrated natural gas and electricity company that
engages, primarily through subsidiaries, in the transportation and wholesale
marketing of natural gas, the exploration for and production of natural gas and
crude oil, the production, purchase, transportation and worldwide marketing and
trading of natural gas liquids, crude oil and refined petroleum products, and
the purchasing and marketing of electricity and other energy-related
commitments, and Joint Energy Development Investments Limited Partnership, a
Delaware limited partnership ("JEDI"), which is engaged primarily in the
business of investing in and managing certain energy related assets. Enron and
JEDI are referred to herein as the "Reporting Entities." Additional entities
that may be deemed to be control persons of JEDI are (a) Enron Capital
Management Limited Partnership, a Delaware limited partnership and the general
partner of JEDI ("ECMLP"), whose principal business is to manage oil and gas
related investments, and (b) Enron Capital Corp., a Delaware corporation and
the general partner of ECMLP ("ECC"), whose principal business is to manage oil
and gas related investments, and (c) Enron Capital & Trade Resources Corp., a
Delaware corporation ("ECT"), whose principal business is the purchase of
natural gas, gas liquids and power through a variety of contractual
arrangements and marketing these energy products to local distribution
companies, electric utilities, cogenerators and both commercial and industrial
end users, as well as the provision of risk management services. ECC is a
wholly owned subsidiary of ECT, which is a wholly owned subsidiary of Enron.

     The address of the principal business office of ECT, JEDI, ECMLP, ECC and
Enron is 1400 Smith Street, Houston, Texas 77002. Schedule I attached hereto
sets forth certain additional information with respect to each director and
each executive officer of Enron and ECC. The filing of this statement on
Schedule 13D shall not be construed as an admission that Enron, ECMLP, ECC or
any person listed on Schedule I hereto is, for the purposes of Section 13(d) or
13(g) of the Act, the beneficial owner of any securities covered by this
statement.

     None of the Reporting Entities, nor to their knowledge ECMLP or ECC or any
person listed on Schedule I hereto, has been, during the last five years (a)
convicted of any criminal proceeding (excluding traffic violations or similar
misdemeanors) or (b) a party to a civil proceeding of a judicial or
administrative body of competent jurisdiction and as a result of such
proceeding was or is subject

                                       1

<PAGE>   5



to a judgment, decree or final order enjoining future violations of, or
prohibiting or mandating activities subject to, U.S. federal or state
securities laws or finding any violations with respect to such laws.

Item 3.        Source and Amount of Funds or Other Consideration.

        On November 26, 1997, the Issuer acquired Coda Energy, Inc. ("Coda")
pursuant to an Agreement and Plan of Merger dated October 31, 1997 (the "Merger
Agreement"). Pursuant to the Merger Agreement, JEDI received as part of the
consideration exchanged in the merger for shares of preferred stock of Coda
owned by JEDI warrants (the "Warrants") to purchase an aggregate of 1,666,667
shares of Common Stock (subject to adjustment in certain events) of the Issuer.
Each Warrant entitles the holder to purchase one share of Common Stock at an
initial exercise price (subject to adjustment) of $27.50 per share. The terms
of the Warrants are set forth in a Warrant Agreement between the Issuer and
JEDI dated as of November 26, 1997 (the "Warrant Agreement"). See Item 4 for a
more complete description of the Warrants and the Warrant Agreement.

     The Warrants become exercisable under the terms of the Warrant Agreement
on November 27, 1998, and this Schedule 13D is being filed because the
Reporting Entities now have the right to acquire the Common Stock issuable upon
the exercise of the Warrants within 60 days. The Warrants have not been
exercised, and, accordingly, no funds have been expended by the Reporting
Entities in connection with the acquisition that is the subject of this
Schedule 13D.

Item 4.        Purpose of Transaction.

     The acquisition of the Warrants was the result of a negotiated transaction
with the Issuer with regard to the Issuer's acquisition of Coda. The Warrants
were acquired for investment purposes, and the Reporting Entities presently
expect that any shares of Common Stock acquired upon the exercise of the
Warrants would be held for investment purposes. JEDI intends to review its
investment in the Issuer on a continuing basis and, depending upon the price
of, and other market conditions relating to, the Common Stock, subsequent
developments affecting the Issuer, the Issuer's business and prospects, other
investment and business opportunities available to JEDI, general stock market
and economic conditions, tax considerations and other factors deemed relevant,
may decide to exercise the Warrants and acquire all or any portion of the
Common Stock issuable thereupon, to dispose of Warrants in privately negotiated
transactions, or otherwise to increase or decrease the size of its investment
in the Issuer.

     The Warrant Agreement and the Registration Rights Agreement (as defined
below) are each attached as exhibits to this statement on Schedule 13D and
incorporated herein by reference, and the following summaries of the terms of
such agreements are qualified by reference to the actual agreements.

     Warrant Agreement. On November 26, 1997 JEDI acquired the Warrants 
described in Item 3, pursuant to the Warrant Agreement. Pursuant to the Warrant
Agreement, the Warrants become

                                       2

<PAGE>   6



exercisable on November 26, 1998 and remain exercisable, in whole or in part,
until November 25, 2000, at which time the Warrants expire. Each Warrant is
initially exercisable for one share of Common Stock at an initial exercise
price of $27.50 per share. Warrants may be exercised by payment in cash of the
exercise price of a Warrant or by the surrender for cancellation of Warrants
exercisable for a number of shares of Common Stock having a current market
price (as defined in the Warrant Agreement) equal to the exercise price of the
Warrants being exercised.

     The Warrant Agreement contains anti-dilution provisions that require the
number of shares of Common Stock issuable upon the exercise of each Warrant and
the exercise price thereof be adjusted upon the occurrence of specified events,
such as stock dividends, subdivisions or combinations, dividends on Common
Stock paid in property, reclassification of the Common Stock, rights offerings
and mergers and other business combinations.

     Each Warrant is transferable, but is subject to restrictions upon transfer
imposed by applicable securities laws. Prior to the exercise of the Warrants,
no holder of Warrants as such has any rights of a holder of Common Shares,
including the right to vote or give written consent to stockholders' actions or
to receive notices of meetings of stockholders, or the right to receive stock
dividends or other distributions (other than cash dividends in respect of the
Common Stock). However, in the event the Issuer pays cash dividends on the
Common Stock, each holder of Warrants is entitled to receive an amount of cash
equal to the amount it would have received had it been the holder of the number
of shares of Common Stock issuable upon the exercise of its Warrants
immediately prior to the record date for the dividend. In addition, the Issuer
has agreed during the term of the Warrants not to declare or pay any dividend
of any shares of capital stock of the Issuer, evidences of indebtedness of the
Issuer, cash or other property (including any rights, warrants or securities),
other than any dividend or distribution (i) upon certain mergers,
consolidations or sales in which provision is made for the holders of Warrants
to receive the consideration received by the holders of Common Stock in the
transaction, (ii) of Common Stock issued as a dividend or in connection with
any subdivisions or combinations subject to the antidilution provisions, or
(iii) of cash not in liquidation of the Issuer, if the fair market value of
such dividend or other distribution in respect of one share of Common Stock
exceeds the current market price of the Common Stock at the date of
distribution.

     Registration Rights Agreement. The Issuer and JEDI entered into a
Registration Rights Agreement dated as of November 27, 1997 (the "Registration
Rights Agreement"), which requires the Issuer to register for sale under the
Securities Act of 1933, as amended (the "Securities Act") the shares of Common
Stock issuable upon exercise of the Warrants, at the expense of the Issuer.
These rights include the obligation of the Issuer to file a "shelf"
registration statement and use its reasonable efforts to have it declared and
kept effective until the earlier of three years from the closing of the
acquisition of Coda by the Issuer or the first date on which the shares of
Common Stock issuable on the exercise of the Warrants (or Common Stock issuable
in respect thereof) have been sold pursuant to the registration statement, are
no longer subject to restrictions upon resale imposed by Rule 144 (or any
similar rule then in force) under the Securities Act or have otherwise been
transferred and are free of any restrictions upon resale imposed by the
Securities Act.


                                       3

<PAGE>   7



     Other than the transactions described herein, none of the Reporting
Entities, nor to their knowledge ECMLP or ECC or any person listed on Schedule
I hereto (except to the extent any such person has disclosed his or her
intentions on any filing made under the Securities Exchange Act of 1934), has
any plan or proposal that would result in any of the consequences listed in
paragraphs (a) - (j) of Item 4 of Schedule 13D.

Item 5.        Interest in Securities of the Issuer.

     (a) None of the Reporting Entities directly owns any Common Stock.
However, JEDI owns Warrants which are presently exercisable for 1,666,667
shares of Common Stock, in each case subject to adjustment as set forth in the
Warrant Agreement. If the Warrants are exercised in full, the shares of Common
Stock issuable upon exercise of the Warrants would represent approximately 5.0%
of the outstanding Common Stock (based on the number of shares of Common Stock
outstanding as of June 30, 1998 as reported by the Issuer in its Quarterly
Report on Form 10-Q for the quarter ended June 30, 1998). Enron, ECMLP and ECC
may be deemed to beneficially own the Warrants (and shares of Common Stock
issuable upon the exercise thereof) held by JEDI. See Item 2. Enron disclaims
beneficial ownership of any Warrants or shares of Common Stock issuable upon
the exercise thereof held by JEDI.

     (b) Enron, ECMLP, ECC and JEDI may be deemed to share dispositive power
over the Warrants and voting and dispositive power over the Common Stock
issuable upon the exercise of the Warrants held directly by JEDI. See Item 2.

     (c) Other than the transactions described herein, none of the Reporting
Entities, nor to their knowledge ECMLP, ECC or any of the persons named in
Schedule I hereto (except to the extent any such person has disclosed his or
her intentions on any filing made under the Securities Exchange Act of 1934),
has effected any transactions in the Common Stock during the preceding sixty
days.

     (d) Not applicable.

     (e) Not applicable.

Item 6.        Contracts, Arrangements, Understandings or Relationships With 
               Respect to Securities of the Issuer.

     See the description of the Warrant Agreement and the Registration Rights
Agreement in Item 4 above.

Item 7.        Material to be Filed as Exhibits.

     Exhibit 1        Warrant Agreement dated as of November 26, 1997 between 
                      the Issuer and JEDI.


                                       4

<PAGE>   8



     Exhibit 2        Registration Rights Agreement dated as of November 26, 
                      1997 between the Issuer and JEDI.
     Exhibit 3        Joint Filing Agreement.


                                       5

<PAGE>   9




     After reasonable inquiry and to the best knowledge and belief of the
undersigned, the undersigned certify that the information set forth in this
statement is true, complete and correct.



Date:  October 7, 1998                  ENRON CORP.

                                        By: /s/ Peggy B. Menchaca
                                           ---------------------------------
                                        Name:  Peggy B. Menchaca
                                        Title:  Vice President and Secretary


Date:  October 7, 1998                 JOINT ENERGY DEVELOPMENT
                                        INVESTMENTS LIMITED PARTNERSHIP

                                        By:    Enron Capital Management
                                               Limited Partnership, its 
                                               general partner

                                        By:    Enron Capital Corp., its 
                                               general partner

                                        By: /s/ Peggy B. Menchaca
                                           ---------------------------------
                                        Name:  Peggy B. Menchaca
                                        Title:  Vice President and Secretary



                                       6

<PAGE>   10



                                   SCHEDULE I

                        DIRECTORS AND EXECUTIVE OFFICERS
                                  ENRON CORP.

<TABLE>
<CAPTION>
Name and Business Address                   Citizenship     Position and Occupation
- -------------------------                   -----------     -----------------------
<S>                                         <C>             <C>
Robert A. Belfer                             U.S.A.         Director; Chairman, President and
767 Fifth Avenue, 46th Fl.                                  Chief Executive Officer,
New York, NY 10153                                          Belco Oil & Gas Corp.

Norman P. Blake, Jr.                         U.S.A.         Director;  Chairman, United States
USF&G Corporation                                           Fidelity and Guaranty Company
6225 Smith Ave. LA0300
Baltimore, MD 21209

Ronnie C. Chan                               U.S.A.         Director; Chairman of Hang Lung
Hang Lung Development                                       Development Group
   Company Limited
28/F, Standard Chartered
   Bank Building
4 Des Vouex Road Central
Hong Kong

John H. Duncan                               U.S.A.         Director; Investments
5851 San Felipe, Suite 850
Houston, TX 77057

Joe H. Foy                                   U.S.A.         Director; Retired Senior Partner,
404 Highridge Dr.                                           Bracewell & Patterson, L.L.P.
Kerrville, TX 78028

Wendy L. Gramm                               U.S.A.         Director; Former Chairman, U.S.
P. O. Box 39134                                             Commodity Futures Trading
Washington, D.C. 20016                                      Commission

Ken L. Harrison                              U.S.A.         Director; Vice Chairman of Enron
121 S. W. Salmon Street                                     Corp.
Portland, OR 97204
</TABLE>


                                     I - 1

<PAGE>   11



<TABLE>
<S>                                         <C>             <C>

Robert K. Jaedicke                           U.S.A.         Director; Professor (Emeritus),
Graduate School of Business                                 Graduate School of Business
Stanford University                                         Stanford University
Stanford, CA 94305

Charles A. LeMaistre                         U.S.A.         Director; President (Emeritus),
13104 Travis View Loop                                      University of Texas M. D. Anderson
Austin, TX 78732                                            Cancer Center

Jerome J. Meyer                              U.S.A.         Director; Chairman and Chief
26600 S. W. Parkway                                         Executive Officer, Tektronix, Inc.
Building 63; P. O. Box 1000
Wilsonville, OR 97070-1000

John A. Urquhart                             U.S.A.         Director; Senior Advisor to the
John A. Urquhart Assoc.                                     Chairman of Enron Corp.; President,
111 Beach Road                                              John A. Urquhart Associates
Fairfield, CT 06430

John Wakeham                                  U.K.          Director; Former U.K. Secretary of
Pingleston House                                            State for Energy and Leader of the
Old Alresford                                               Houses of Commons and Lords
Hampshire S024 9TB
United Kingdom

Charls E. Walker                             U.S.A.         Director; Chairman, Walker &
Walker & Walker, LLC                                        Walker, LLC
10220 River Road, Ste. 105
Potomac, Maryland 20854

Bruce G. Willison                            U.S.A.         Director; President and Chief
4900 Rivergrade Road                                        Operating Officer, Home Savings of
Irwindale, CA 91706                                         America

Herbert S. Winokur, Jr.                      U.S.A.         Director; President, Winokur &
Winokur & Associates, Inc.                                  Associates, Inc.
30 East Elm Ct.
Greenwich, CT 06830
</TABLE>


                                     I - 2

<PAGE>   12




Each of the following person's
business address is:
1400 Smith Street
Houston, TX  77002
<TABLE>
<S>                                         <C>            <C>
Kenneth L. Lay                               U.S.A.         Director; Chairman and Chief
                                                            Executive Officer

Jeffrey K. Skilling                          U.S.A.         Director; President and Chief
                                                            Operating Officer

J. Clifford Baxter                           U.S.A.         Senior Vice President, Corporate
                                                            Development

Richard A. Causey                            U.S.A.         Senior Vice President, Chief
                                                            Accounting, Information and
                                                            Administrative Officer

James V. Derrick, Jr.                        U.S.A.         Senior Vice President and General
                                                            Counsel

Andrew S. Fastow                             U.S.A.         Senior Vice President and Chief
                                                            Financial Officer

Stanley C. Horton                            U.S.A.         Chairman and Chief Executive
                                                            Officer, Enron Gas Pipeline Group

Rebecca P. Mark                              U.S.A.         Vice Chairman; Chairman, Enron
                                                            International, Inc.

Mark A. Frevert                              U.S.A.         President and Chief Executive
                                                            Officer, Enron Europe, Ltd.

Lou L. Pai                                   U.S.A.         Chairman, President and Chief
                                                            Executive Officer, Enron Energy
                                                            Services, Inc.

Kenneth D. Rice                              U.S.A.         Chairman and Chief Executive
                                                            Officer, Enron Capital & Trade
                                                            Resources Corp. - North America

Joseph W. Sutton                             U.S.A.         President and Chief Executive
                                                            Officer, Enron International, Inc.
</TABLE>

                                     I - 3

<PAGE>   13





                        DIRECTORS AND EXECUTIVE OFFICERS
                              ENRON CAPITAL CORP.
<TABLE>
<CAPTION>
Name and Business Address           Citizenship                  Position and Occupation
- -------------------------           -----------                  -----------------------
<S>                                 <C>                          <C>
Each of the following person's
business address is:
1400 Smith Street
Houston, TX  77002

James V. Derrick, Jr.               U.S.A.                       Director

Mark A. Frevert                     U.S.A.                       Director; Managing Director

Kenneth D. Rice                     U.S.A.                       Director; Chairman, Chief Executive
                                                                 Officer and Managing Director

Gene E. Humphrey                    U.S.A.                       President and Managing Director

Richard B. Buy                      U.S.A.                       Managing Director

Andrew S. Fastow                    U.S.A.                       Managing Director

Mark E. Haedicke                    U.S.A.                       Managing Director and General Counsel

Jeffrey McMahon                     U.S.A.                       Managing Director, Finance and
                                                                 Treasurer
</TABLE>


                                     I - 4

<PAGE>   14
                                EXHIBIT INDEX
<TABLE>
<CAPTION>
NUMBER       DESCRIPTION
- ------       -----------
<S>          <C>
Exhibit 1 -- Warrant Agreement dated as of November 26, 1997 between the 
             Issuer and JEDI.     

Exhibit 2 -- Registration Rights Agreement dated as of November 26, 1997 
             between the Issuer and JEDI.

Exhibit 3 -- Joint Filing Agreement
</TABLE>

<PAGE>   1
                                                                       EXHIBIT 1

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


                                WARRANT AGREEMENT


                                     between


                              BELCO OIL & GAS CORP.


                                       and

                            JOINT ENERGY DEVELOPMENT
                         INVESTMENTS LIMITED PARTNERSHIP


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


                          Dated as of November 26, 1997


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


                  Warrants to Purchase 1,666,667 Common Shares


================================================================================
<PAGE>   2



                               TABLE OF CONTENTS

<TABLE>
<S>                                                                          <C>
RECITALS ......................................................................1

AGREEMENT .....................................................................1

1.   DEFINITIONS ..............................................................1

2.   WARRANT CERTIFICATES .....................................................6
     2.1  Issuance of Warrant .................................................6
     2.2  Form, Denomination and Date of Warrants .............................6
     2.3  Execution and Delivery of Warrant Certificates ......................7
     2.4  Transfer and Exchange ...............................................7

3.   EXERCISE AND EXPIRATI0N OF WARRANTS ......................................8
     3.1  Right to Acquire Warrant Shares Upon Exercise .......................8
     3.2  Exercise and Expiration of Warrants .................................8
          (a)  Exercise of Warrants ...........................................8
          (b)  Expiration of Warrants .........................................8
          (c)  Method of Exercise .............................................9
          (d)  Partial Exercise ...............................................9
          (e)  Issuance of Warrant Shares .....................................9
          (f)  Time of Exercise ..............................................10
     3.3  Payment of Taxes ...................................................10
     3.4  Surrender of Certificates ..........................................10
     3.5  Shares Issuable ....................................................11

4.   DISSOLUTION, LIQUIDATION OR WINDING UP ..................................11

5.   ADJUSTMENTS .............................................................11
     5.1  Adjustments ........................................................11
          (a)  Stock Dividends, Subdivisions and Combinations ................11
          (b)  Certain Other Dividends and Distributions .....................12
          (c)  Reclassifications .............................................13
          (d)  Distribution of Warrants or Other Rights to Holders of Common
               Shares ........................................................13
          (e)  Superseding Adjustment of Number of Warrant Shares into Which
               Each Warrant is Exercisable ...................................13
          (f)  Other Provisions Applicable to Adjustments under this 
               Section .......................................................14
          (g)  Warrant Price Adjustment ......................................15
          (h)  Merger, Consolidation or Combination ..........................15
          (i)  Compliance with Governmental Requirements .....................15
          (j)  Optional Tax Adjustment .......................................15
          (k)  Warrants Deemed Exercisable ...................................16
</TABLE>



<PAGE>   3

<TABLE>
<S>                                                                          <C>
          (1)  Limitations on Certain Non-Stock Dividends ....................16
     5.2  Notice of Adjustment ...............................................16
     5.3  Statement on Warrant Certificates ..................................16
     5.4  Fractional Interest ................................................16

6.   LOSS OR MUTILATION ......................................................17

7.   RESERVATION AND AUTHORIZATION OF WARRANT SHARES .........................17

8.   WARRANT TRANSFER BOOKS ..................................................18

9.   WARRANT HOLDERS .........................................................19
     9.1  Voting or Dividend Rights ..........................................19
     9.2  Rights of Action ...................................................19
     9.3  Treatment of Holders of Warrant Certificates .......................19
     9.4  Communications to Holders ..........................................19

10.  NOTICES .................................................................20
     10.1 Notices Generally ..................................................20
     10.2 Required Notices to Holders ........................................21

11.  APPLICABLE LAW ..........................................................22

12.  PERSONS BENEFITING ......................................................22

13.  COUNTERPARTS ............................................................22

14.  AMENDMENTS ..............................................................22

15.  INSPECTION ..............................................................23

16.  SUCCESSOR TO THE COMPANY ................................................23

17.  ENTIRE AGREEMENT ........................................................23

18.  HEADINGS ................................................................23

                                    EXHIBITS

A.   List of Warrant Certificates To Be Issued ..............................A-1

B.   Form of Warrant Certificate.............................................B-1
</TABLE>

<PAGE>   4

                               WARRANT AGREEMENT

         This WARRANT AGREEMENT, dated as of November 26, 1997 (the "Issue
Date") is entered into between BELCO OIL & GAS CORP., a Nevada corporation (the
"Company"), and JOINT ENERGY DEVELOPMENT INVESTMENTS LIMITED PARTNERSHIP, a
Delaware limited partnership ("JEDI").

                                    RECITALS

         A.      This Agreement is entered into in connection with the
Agreement and Plan of Merger, dated as of October 31, 1997, by and among the
Company, Belco Acquisition Sub, Inc., a Delaware corporation, and Coda Energy,
Inc., a Delaware corporation (the "Merger Agreement").

         B.      Pursuant to the Merger Agreement, the Company proposes to
issue to JEDI 1,666,667 Warrants, as hereinafter described, each to purchase
from time to time at the Warrant Price (as defined below) one Common Share (as
defined below) of the Company after the Trigger Date (as defined below) and on
or prior to the Expiration Date (as defined below).

                                   AGREEMENT

         NOW, THEREFORE, in consideration of the premises and the mutual
agreements herein set forth, the parties hereto agree as follows:

1.       DEFINITIONS

         "Additional Common Shares" shall mean all Common Shares issued or
issuable by the Company after the date of this Agreement, other than the
Warrant Shares.

         "Affiliate" shall mean, as to any Person, any other Person directly or
indirectly controlling or controlled by or under direct or indirect common
control of such Person. For purposes of this definition, "control" when used
with respect to any Person means the power to direct the management and
policies of such Person, directly or indirectly, whether through the ownership
of voting securities, by contract or otherwise, and the terms "controlling" and
"controlled" have meanings correlative to the foregoing. Notwithstanding the
foregoing, "Affiliate" shall not include any wholly-owned Subsidiary of the
Company.

         "Agreement" shall mean this Warrant Agreement, as the same may be 
amended, modified or supplemented from time to time.

         "Business Day" shall mean a day which in New York, New York is neither
a legal holiday nor a day on which banking institutions are authorized by law
or regulation to close.

         "Capital Stock" of any Person shall mean any and all shares,
interests, participations, or other equivalents (however designated) of such
Person's capital stock, and any warrants, options or similar rights to acquire
such capital stock.
<PAGE>   5
         "Change of Control" means the occurrence of any of the following: (i)
the sale, lease, transfer, conveyance or other disposition (other than by way
of merger or consolidation), in one or a series of related transactions, of all
or substantially all of the assets of the Company and its Subsidiaries taken as
a whole to any "person" (as such term is used in Section 3(d)(3) of the
Exchange Act) other than any one or more Principals or their Affiliates, (ii)
the adoption of a plan relating to the liquidation or dissolution of the
Company, (iii) the consummation of any transaction (including, without
limitation, any purchase, sale, acquisition, disposition, merger or
consolidation) the result of which is that any "person" (as such term is used
in Section 13(d)(3) of the Exchange Act), other than one or more Principals or
their Affiliates, becomes the "beneficial owner" (as such term is described in
Rule 13d-3 and Rule 13d-5 under the Exchange Act) of more than 50% of the
aggregate voting power of all classes of Capital Stock of the Company having
the right to elect directors under ordinary circumstances, (iv) the first day
on which a majority of the members of the Board of Directors of the Company are
not Continuing Directors or (vi) a "Rule 13e-3 transaction" (as such term is
defined in Rule 13e-3 under the Exchange Act). For purposes of this definition,
"Principals" means (i) Robert A. Belfer, (ii) the spouse of Robert A. Belfer,
(iii) Laurence D. Belfer, (iv) the spouse of Laurence D. Belfer, (v) the lineal
descendants of Robert A. Belfer, and (vi) trusts in which Robert A. Belfer, the
spouse of Robert A. Belfer, Laurence D. Belfer, the spouse of Laurence D.
Belfer, or a lineal descendant of Robert A. Belfer is a beneficiary, and
"Continuing Directors" means, as of any date of determination, any member of
the Board of Directors of the Company who (i) was a member of such Board of
Directors on the date of this Agreement or (ii) was nominated for election or
elected to such Board of Directors with the approval of a majority of the
Continuing Directors who were members of such Board at the time of such
nomination or election.

         "Common Equity Securities" shall mean any class or series of Common
Shares of the Company.

         "Common Shares" shall mean (i) the common stock, par value $.01 per
share, of the Company, as constituted on the original issuance of the Warrants,
(ii) any Capital Stock into which such Common Shares may thereafter be changed
and (iii) any share of the Company of any other class issued to holders of such
Common Shares upon any reclassification thereof.

         "Company" shall mean the company identified in the preamble hereof and
its successors and assigns.

         "Corporate Office" shall mean the executive offices of the Company
located at 767 Fifth Avenue, 46th Floor, New York, New York 10583 or such other
place as the Company shall locate its executive offices.

         "Current Market Price" shall mean, with respect to any security on any
date:





                                      -2-
<PAGE>   6
                          (1)     if the Company does not have a class of
                 equity securities registered under the Exchange Act, the
                 value of such security (a) most recently determined as of a
                 date within the one month preceding such date by an
                 Independent Financial Expert using one or more valuation
                 methods that such Independent Financial Expert, in its best
                 professional judgment, determines to be most appropriate but
                 without giving effect to the discount for any lack of
                 liquidity of the security or to the fact that the Company may
                 not have any class of equity securities registered under the
                 Exchange Act and assuming that the Warrants are currently
                 exercisable (in the event of more than one such determination,
                 the determination for the later date shall be used) or (b) if
                 no such determination shall have been made within such one
                 month period, determined as of such date by an Independent
                 Financial Expert as described in (a) above, or

                          (2)     if the Company does have a class of equity
                 securities registered under the Exchange Act, the average of
                 the daily Market Prices of such security for each Business Day
                 during the period commencing thirty (30) Business Days before
                 such date and ending on the date one day prior to such date
                 or, if the Company has had a class of equity securities
                 registered under the Exchange Act for less than thirty (30)
                 consecutive Business Days before such date, then the average
                 of the daily Market Price for all of the Business Days before
                 such date for which daily Market Prices are available provided,
                 however, that in the event that the Current Market Price per
                 share of a security is determined during a period following
                 the announcement by the Company of (A) a dividend or
                 distribution on such a security payable in shares of such a
                 security or securities convertible into shares of such a
                 security, or (B) any subdivision, combination or
                 reclassification of such security, and prior to the expiration
                 of such thirty (30) Business Day period before such date (or,
                 if applicable, such lesser number of Business Days before such
                 date for which daily Market Prices are available) after the
                 ex-dividend date for such dividend or distribution, or the
                 record date for such subdivision, combination or
                 reclassification, then in each such case, Current Market Price
                 shall be properly adjusted to take into account ex-dividend
                 trading.

         "Exchange Act" shall mean the Securities Exchange Act of 1934, as
amended, and the rules and regulations promulgated thereunder.

         "Expiration Date" shall mean November 25, 2000 or such earlier date as
determined in accordance with Section 4.

         "Holder" or "Warrantholder" shall mean any Person in whose name at the
time any Warrant Certificate is registered upon the Warrant Register.

         "Independent" shall mean a nationally recognized investment banking
firm or Person (as the case may be) (i) that does not then have, and for the
ten years immediately preceding such time has





                                      -3-
<PAGE>   7
not had (and, in the case of a nationally recognized investment banking firm,
whose directors, officers, employees and Affiliates do not then have, and for
the ten years immediately preceding such time have not had) a direct or
indirect interest in the Company or any of its Subsidiaries or Affiliates or
any successor to any of them and (ii) that is not then, and for the ten years
immediately preceding such time was not (and, in the case of a nationally
recognized investment banking firm, whose directors, officers, employees or
Affiliates are not then, and for the ten years immediately preceding such time
were not) an employee, consultant, advisor, director, officer or Affiliate (it
being understood that the term "Independent" when applied to a director of the
Company, means a non-employee director of the Company whose only relationship
with the Company during the relevant period has been as a director of the
Company) of the Company, any of its Subsidiaries or Affiliates or any successor
to any of them.

         "Independent Financial Expert" shall mean an Independent nationally
recognized investment banking firm with assets in excess of $1.0 billion
selected by a majority of the members of the Board of Directors (and by a
majority of the Independent members of the board, if any) of the Company.

         "JEDI" shall mean the limited partnership identified in the preamble
hereof and its successors.

         "Market Price" shall mean (A) in the case of a security listed or
admitted to trading on any securities exchange, the closing price, regular way,
on such day, or if no sale takes place on such day, the average of the closing
bid and asked prices on such day, (B) in the case of a security not then listed
or admitted to trading on any securities exchange, the last reported sale price
on such day, or if no sale takes place on such day, the average of the closing
bid and asked prices on such day, as reported by a reputable quotation source
designated by the Company, (C) in the case of a security not then listed or
admitted to trading on any securities exchange and as to which no such reported
sale price or bid and asked prices are available, the average of the reported
high bid and low asked prices on such day, as reported by a reputable quotation
service, or The Wall Street Journal, Eastern Edition, or if such newspaper is
no longer published then in a newspaper of general circulation in the Borough
of Manhattan, City and State of New York, customarily published on each
Business Day, designated by the Company or if there shall be no bid and asked
prices on such day, the average of the high bid and low asked prices, as so
reported, on the most recent day (not more than ten (10) days prior to the date
in question) for which prices have been so reported, and (D) if there are no
bid and asked prices reported during the ten (10) days prior to the date in
question, the Current Market Value of the security shall be determined as if
the Company did not have a class of equity securities registered under the
Exchange Act.

         "Non-Stock Dividend" shall mean any payment by the Company to all
holders its Common Shares of any dividend, or any other distribution by the
Company to such holders, of any shares of Capital Stock of the Company,
evidences of indebtedness of the Company, cash or other assets (including
rights, warrants or other securities (of the Company or any other Person)),
other than any dividend or distribution (i) upon a merger or consolidation or
sale to which Section 5.1(h) applies, (ii) of any Common Shares referred to in
Section 5.1(a) or (iii) of cash not in liquidation of the Company.





                                      -4-
<PAGE>   8

         "Non-Surviving Combination" shall mean any merger, consolidation or
other business combination by the Company with one or more other entities in a
transaction in which the Company is not the surviving entity or becomes a
wholly-owned subsidiary of another entity.

         "outstanding" shall mean, as of the time of determination, when used
with respect of any Warrants, all Warrants originally issued under this
Agreement except (i) Warrants that have been exercised pursuant to Section
3.2(a), (ii) Warrants that have expired pursuant to Sections 3.2(b), 4 or 6 and
(iii) Warrants that have otherwise been acquired by the Company; provided,
however, that in determining whether the Holders of the requisite amount of the
outstanding Warrants have given any request, demand, authorization, direction,
notice, consent or waiver under the provisions of this Agreement, Warrants owned
by the Company or any Subsidiary or Affiliate of the Company or any Person that
is at such time a party to a merger or acquisition agreement with the Company
shall be disregarded and deemed not to be outstanding.

         "Person" shall mean any individual, corporation (including a business
trust), partnership, joint venture, association, joint-stock company, trust,
estate, limited liability company, unincorporated association, unincorporated
organization, government or agency or political subdivision thereof or any
other entity.

         "Recipient" shall have the meaning given such term in Section 3.2(e).

         "Restricted Warrants" shall have the meaning given such term in
Section 2.2(b).

         "Restricted Warrant Legend" shall mean the legend so designated on the
Warrant Certificate attached hereto as Exhibit A.

         "Rule 144" shall mean Rule 144 promulgated under the Securities Act.

         "Securities Act" shall mean the Securities Act of 1933, as amended,
and the rules and regulations promulgated thereunder.

         "Subsidiary" shall mean, with respect to any Person, any corporation,
association or other business entity of which more than 50% of the total voting
power of shares of Capital Stock entitled (without regard to the occurrence of
any contingency) to vote in the election of directors, managers or trustees
thereof is at the time owned or controlled, directly or indirectly, by such
Person or one or more of the other Subsidiaries of such Person or a combination
thereof.

         "Trigger Date" shall mean the earliest of (i) November 26, 1998, (ii)
the date of a Change of Control or (iii) the date of any notice given pursuant
to Section 3.2(g).





                                      -5-
<PAGE>   9
         "Warrant Certificates" shall mean those certain warrant certificates
evidencing the Warrants, substantially in the form of Exhibit A attached
hereto.

         "Warrant Price" shall mean the exercise price per Warrant Share,
initially set at $27.50, subject to adjustment as provided in Section 5.1(g).

         "Warrant Register" shall have the meaning given such term in Section
8.

         "Warrant Shares" shall mean the Common Shares issuable upon exercise of
the Warrants, the number of which is subject to adjustment from time to time in
accordance with Section 5.

         "Warrants" shall mean those warrants issued hereunder to purchase
initially up to an aggregate of 1,666,667 Warrant Shares at the Warrant Price,
subject to adjustment pursuant to Section 5.

2.       WARRANT CERTIFICATES

         2.1     Issuance of Warrant. An aggregate of 1,666,667 Warrants shall
be issued on the date of this Agreement to JEDI. The Company shall issue to
JEDI Warrant Certificates evidencing such Warrants. Each Warrant Certificate
issued pursuant to this Section 2.1 shall evidence the number of Warrants
specified therein and each Warrant evidenced thereby shall represent the right,
subject to the provisions contained herein and therein, to purchase one Warrant
Share, subject to adjustment as provided in Section 5.

         2.2     Form, Denomination and Date of Warrants.

                 (a)      Warrant Certificates shall be substantially in the
form of Exhibit A hereto. The Warrants shall be numbered, lettered or otherwise
distinguished in such manner or in accordance with such plans as the officers
of the Company executing the same may determine. Each Warrant shall be dated
the date of its authentication. Any of the Warrants may be issued with
appropriate insertions, omissions, substitutions and variations, and may have
imprinted or otherwise reproduced thereon such legend or legends, not
inconsistent with the provisions of this Agreement, as may be required to
comply with any law or with any rules or regulations pursuant thereto, or with
the rules of any securities market in which the Warrants are admitted to
trading, or to conform to general usage. All Warrants shall be otherwise
substantially identical except as to denomination and as provided herein.

                 (b)      Each Warrant Certificate issued pursuant to this
Agreement ("Restricted Warrants") will bear the Restricted Warrant Legend
unless removed in accordance with Section 2.4.





                                      -6-
<PAGE>   10
         2.3     Execution and Delivery of Warrant Certificates.

                 (a)      Warrant Certificates evidencing the Warrants which
may be delivered under this Agreement are limited to Warrant Certificates
evidencing 1,666,667 Warrants, except for Warrant Certificates delivered
pursuant to Sections 2.4, 3.2(d), 6 and 8 upon registration of transfer of, or
in exchange for, or in lieu of, one or more previously issued Warrant
Certificates.

                 (b)      At any time and from time to time on or after the
date of this Agreement, Warrant Certificates evidencing the Warrants may be
executed and delivered by the Company for issuance.

                 (c)      The Warrant Certificates shall be executed in the
corporate name and on behalf of the Company by the Chairman (or any
Co-Chairman) of the Board, the Chief Executive Officer, the President or any
one of the Vice Presidents of the Company under corporate seal reproduced
thereon and attested to by the Secretary or one of the Assistant Secretaries of
the Company, either manually or by facsimile signature printed thereon. In case
any officer of the Company whose signature shall have been placed upon any of
the Warrant Certificates shall cease to be such officer of the Company before
and delivery thereof, such Warrant Certificates may, nevertheless, be issued
and delivered with the same force and effect as though such person had not
ceased to be such officer of the Company, and any Warrant Certificate may be
signed on behalf of the Company by such person as, at the actual date of the
execution of such Warrant Certificate, shall be a proper officer of the
Company, although at the date of the execution of this Agreement any such
person was not such an officer.

         2.4     Transfer and Exchange.

                 (a)      If a holder of a Restricted Warrant wishes at any
time to transfer such Restricted Warrant to a Person who wishes to take
delivery thereof in the form of a Restricted Warrant, such holder may, subject
to the restrictions on transfer set forth herein and in such Restricted
Warrant, cause the exchange of such Restricted Warrants for one or more
Restricted Warrants of any authorized denomination or denominations and
exercisable for the same aggregate number of Warrant Shares. Upon receipt by
the Company at its Corporate Office of (1) such Restricted Warrant, duly
endorsed as provided herein, (2) instructions from such holder directing the
Company to authenticate and deliver one or more Restricted Warrants exercisable
for the same aggregate number of Warrant Shares as the Restricted Warrant to be
exchanged, such instructions to contain the name or names of the designated
transferee or transferees, the authorized denomination or denominations of the
Restricted Warrants to be so issued and appropriate delivery instructions, and
(3) an opinion of counsel, reasonably satisfactory to the Company, to the
transferor of such Restricted Warrant to the effect that the transfer of such
Restricted Warrant has been registered under the Securities Act or is exempt
from registration thereunder pursuant to an applicable exemption therefrom,
then the Company shall cancel or cause to be canceled such Restricted Warrant
and, concurrently therewith, the Company shall execute and deliver, one or
more Restricted Warrants to the effect set forth therein, in accordance with
the instructions referred to above.





                                      -7-
<PAGE>   11

                 (b)      If Warrants are issued upon the transfer, exchange or
replacement of Warrants bearing the Restricted Warrant Legend, or if a request
is made to remove such Restricted Warrant Legend, the Warrants so issued shall
bear the Restricted Warrant Legend, or the Restricted Warrant Legend shall not
be removed, as the case may be, unless there is delivered to the Company
satisfactory evidence, which may include an opinion of counsel as may be
reasonably required by the Company to the effect that neither the Restricted
Warrant Legend nor the restrictions on transfer set forth therein are required
to ensure that transfers thereof comply with the provisions of the Securities
Act or, with respect to Restricted Warrants, that such Warrants are not
"restricted" within the meaning of Rule 144 under the Securities Act. Upon
provision of such satisfactory evidence the Company shall authenticate and
deliver Warrant Certificates that do not bear the Restricted Warrant Legend.

                 (c)      No service charge shall be made to a Warrantholder
for any registration of transfer or exchange; provided, however, that the
Company may require payment of a sum sufficient to cover any tax or other
governmental charge that may be imposed in connection with any registration
of transfer or exchange of Warrant Certificates.

3.       EXERCISE AND EXPIRATION OF WARRANTS

         3.1     Right to Acquire Warrant Shares Upon Exercise.

         Each Warrant Certificate shall entitle the Holder thereof, subject to
the provisions thereof and of this Agreement, to acquire from the Company, for
each Warrant evidenced thereby, one Warrant Share at the Warrant Price, subject
to adjustment as provided in this Agreement. The Warrant Price shall be adjusted
from time to time as required by Section 5.1. The Warrants are exercisable at
any time on and after the Trigger Date and on or prior to the Expiration Date.

         3.2     Exercise and Expiration of Warrants.

                 (a)      Exercise of Warrants. Subject to the terms and
conditions set forth herein, including, without limitation, the exercise
procedure described in Section 3.2(c), a Holder of a Warrant Certificate may
exercise all or any whole number of the Warrants evidenced thereby, on any
Business Day on and after the Trigger Date until 5:00 p.m., Now York City time,
on the Expiration Date (subject to earlier expiration pursuant to Section 4)
for the Warrant Shares purchasable thereunder.

                 (b)      Expiration of Warrants. The Warrants shall terminate
and become void as of 5:00 p.m., New York City time, on the Expiration Date,
subject to earlier expiration in accordance with Section 4. In the event that
the Warrants are to expire by reason of Section 4, the term "Expiration Date"
shall mean such earlier date for all purposes of this Agreement.




                                      -8-
<PAGE>   12
                 (c)      Method of Exercise. The Holder may exercise all or
any of the Warrants by either of the following methods:

                          (i)     The Holder may deliver to the Company at the
                 Corporate Office (A) a written notice of such Holder's
                 election to exercise Warrants, duly executed by such Holder in
                 the form set forth on the reverse of, or attached to, such
                 Warrant Certificate, which notice shall specify the number of
                 Warrant Shares to be purchased, (B) the Warrant Certificate
                 evidencing such Warrants and (C) a sum equal to the aggregate
                 Warrant Price for the Warrant Shares into which such Warrants
                 are being exercised, which sum shall be paid in any combination
                 elected by such Holder of (x) a company or personal check
                 payable to the order of the Company and delivered to the
                 Company at the Corporate Office, or (y) wire transfers in
                 immediately available funds to the account of the Company at
                 such banking institution as the Company shall have given
                 notice to the Holders in accordance with Section 10.1(b); or

                          (ii)    The Holder may also exercise all or any of
                 the Warrants in a "cashless" or "net-issue" exercise by
                 delivering to the Company at the Corporate Office (A) a
                 written notice of such Holder's election to exercise Warrants,
                 duly executed by such Holder in the form set forth on the
                 reverse of, or attached to, such Warrant Certificate, which
                 notice shall specify the number of Warrant Shares to be
                 delivered to such Holder and the number of Warrant Shares with
                 respect to which such Warrants are being surrendered in
                 payment of the aggregate Warrant Price for the Warrant Shares
                 to be delivered to the Holder, and (B) the Warrant Certificate
                 evidencing such Warrants. For purposes of this subparagraph
                 (ii), each Warrant Share as to which such Warrants are
                 surrendered in payment of the aggregate Warrant Price will be
                 attributed a value equal to (x) the Current Market Price per
                 share of Common Shares minus (y) the then-current Warrant
                 Price.

                 (d)      Partial Exercise. If fewer than all the Warrants
represented by a Warrant Certificate are exercised, such Warrant Certificate
shall be surrendered and a new Warrant Certificate of the same tenor and for
the number of Warrants which were not exercised shall be executed by the
Company. The Company, subject to the provisions of Section 8, as may be
directed in writing by the Holder, shall deliver the new Warrant Certificate to
the Person or Persons in whose name such new Warrant Certificate is so
registered.

                 (e)      Issuance of Warrant Shares. Upon surrender of a
Warrant Certificate evidencing Warrants in conformity with the foregoing
provisions and payment of the Warrant Price in respect of the exercise of one
or more Warrants evidenced thereby, when such payment is received, the Company
shall thereupon, as promptly as practicable, and in any event within five
Business Days after receipt by the Company of such notice of exercise, execute
or cause to be executed and deliver or cause to be delivered to the Recipient
(as defined below) a certificate or certificates representing the aggregate
number of Warrant Shares issuable upon such exercise (based





                                      -9-
<PAGE>   13
upon the aggregate number of Warrants so exercised), determined in accordance
with Section 3.5, together with an amount in cash in lieu of any fractional
share(s) determined in accordance with Section 5.4. The certificate or
certificates so delivered shall be, to the extent possible, in such denomination
or denominations as such Holder shall request in such notice of exercise and
shall be registered or otherwise placed in the name of, and delivered to, the
Holder or, subject to Section 2.2 and Section 3.3, such other Person as shall
be designated by the Holder in such notice (the Holder or such other Person
being referred to herein as the "Recipient").

                 (f)      Time of Exercise. A Warrant shall be deemed to have
been exercised immediately prior to the close of business on the date on which
all requirements set forth in Section 3.2(c) applicable to such exercise have
been satisfied. Subject to Section 5.1(f)(iv), certificate(s) evidencing the
Warrant Shares issued upon the exercise of such Warrant shall be deemed to have
been issued and, for all purposes of this Agreement, the Recipient shall, as
between such Person and the Company, be deemed to be and entitled to all rights
of the holder of record of such Warrant Shares as of such time.

                 (g)      In the event that the Company shall propose any
transaction which would result in a Change of Control, the Company shall send a
written notice to each holder of Warrant Certificates not less than 20 days
prior to the consummation of the transaction that would result in such Change
of Control.

         3.3     Payment of Taxes

         The Company shall pay any and all taxes (other than income taxes) and
other charges that may be payable in respect of the issue or delivery of
Warrant Shares on exercise of Warrants pursuant hereto. The Company shall not
be required, however, to pay any tax or other charge imposed in respect of any 
transfer involved in the issue and delivery of any certificates for Warrant
Shares or payment of cash to any Recipient other than the Holder of the Warrant
Certificate surrendered upon the exercise of a Warrant, and in case of such
transfer or payment, the Company shall not be required to issue or deliver any
certificate or pay any cash until (a) such tax or charge has been paid or an
amount sufficient for the payment thereof has been delivered to the Company or
(b) it has been established to the Company's satisfaction that any such tax or
other charge that is or may become due has been paid.

         3.4     Surrender of Certificates.

         Any Warrant Certificate surrendered for exercise shall be promptly
canceled by the Company and shall not be reissued by the Company.





                                      -10-
<PAGE>   14
         3.5     Shares Issuable.

         The number of Warrant Shares "issuable upon exercise" of Warrants at
any time shall be the number of Warrant Shares into which such Warrants are then
exercisable. The number of Warrant Shares "into which each Warrant is
exercisable" initially shall be one share, subject to adjustment as provided in
Section 5.1.

4.       DISSOLUTION, LIQUIDATION OR WINDING UP

         If, on or prior to the Expiration Date, the Company (or any other
Person controlling the Company) shall propose a voluntary or involuntary
dissolution, liquidation or winding up of the affairs of the Company, the
Company shall give written notice thereof to all Holders of Warrant
Certificates in the manner provided in Section 10 prior to the date on which
such transaction is expected to become effective or, if earlier, the record
date for such transaction. Such notice shall also specify the date as of which
the holders of record of the Common Shares shall be entitled to exchange their
shares for moneys, securities or other property deliverable upon such
dissolution, liquidation or winding up, as the case may be, the date on which
each Holder of Warrant Certificates shall be entitled to receive the moneys,
securities or other property which such Holder would have been entitled to
receive had such Holder been the holder of record of the Warrant Shares into
which the Warrants were exercisable immediately prior to such dissolution,
liquidation or winding up (net of the then applicable Warrant Price) and the
date on which the rights to exercise the Warrants shall terminate.

         In case of any such voluntary or involuntary dissolution, liquidation
or winding up of the Company, the Company shall retain any moneys, securities
or other property which the Holders are entitled to receive under this
Agreement.  After any Holder has surrendered a Warrant Certificate to the
Company, the Company shall make payment in the appropriate amount to such
Person or Persons as it may be directed in writing by the Holder surrendering
such Warrant Certificate. The Company shall not be required to pay interest on
any money deposited pursuant to the provisions of this Section 4.

5.       ADJUSTMENTS

         5.1     Adjustments.

         The number of Warrant Shares into which each Warrant is exercisable and
the Warrant Price shall be subject to adjustment from time to time after the
Issue Date in accordance (and only in accordance) with the provisions of this
Section 5:

                 (a)      Stock Dividends, Subdivisions and Combinations. In
case at any time or from time to time after the date hereof the Company shall:





                                      -11-
<PAGE>   15
                           (i)    pay to the holders of its Common Shares a
                 dividend payable in, or make any other distribution on any
                 class of its capital stock in, Common Shares (other than a
                 dividend or distribution upon a merger or consolidation or
                 sale to which Section 5.1(h) applies);

                          (ii)    subdivide its outstanding Common Shares into
                 a larger number of Common Shares (other than a subdivision
                 upon a merger or consolidation or sale to which Section 5.1(h)
                 applies); or

                          (iii)   combine its outstanding Common Shares into a
                 smaller number of Common Shares (other than a combination upon
                 a merger or consolidation or sale to which Section 5.1(h)
                 applies);

then, (x) in the case of any such dividend or distribution, effective
immediately after the opening of business on the day after the date for the
determination of the holders of Common Shares entitled to receive such dividend
or distribution or (y) in the case of any subdivision or combination, effective
immediately after the opening of business on the day after the day upon which
such subdivision or combination becomes effective, the number of Warrant Shares
into which each Warrant is exercisable shall be adjusted to that number of
Warrant Shares determined by (A) in the case of any such dividend or
distribution, multiplying the number of Warrant Shares into which each Warrant
is exercisable at the opening of business on the day after the day for
determination by a fraction (not to be less than one), (1) the numerator of
which shall be equal to the sum of the number of Common Shares outstanding at
the close of business on such date for determination and the total number of
shares constituting such dividend or distribution and (2) the denominator of
which shall be equal to the number of Common Shares outstanding at the close of
business on such date for determination, or (B) in the case of any such
combination, by proportionately reducing, or, in the case of any such
subdivision by proportionately increasing, the number of Warrant Shares into
which each Warrant is exercisable at the opening of business on the day after
the day upon which such subdivision or combination becomes effective.

                 (b)      Certain Other Dividends and Distributions. In case at
any time or from time to time after the date hereof the Company shall effect a
Non-Stock Dividend (other than any dividend or distribution of any warrants,
options or rights referred to in Section 5.1(d)), then, and in each such case,
effective immediately after the opening of business on the day after the date
for the determination of the holders of Common Shares entitled to receive such
distribution, the number of Warrant Shares into which each Warrant is
exercisable shall be adjusted to that number determined by multiplying the
number of Warrant Shares into which each Warrant is exercisable immediately
prior to the close of business on the date of determination by a fraction, (i)
the numerator of which shall be the Current Market Price per Common Share on
such date of determination and (ii) the denominator of which shall be such
Current Market Price per Common Shares minus the portion applicable to one
Common Share of the fair market value (as determined in good faith by the Board
of Directors of the Company) of such securities or other assets so distributed
pursuant to such Non-Stock Dividend.





                                      -12-
<PAGE>   16
                 (c)      Reclassifications. A reclassification of the Common
Shares (other than any such reclassification in connection with a merger or
consolidation or sale to which Section 5.1(h) applies) into Common Shares and
shares of any other class of stock shall be deemed a distribution by the
Company to the holders of its Common Shares of such shares of such other class
of stock for the purposes and within the meaning of Section 5.1(b) (and the
effective date of such reclassification shall be deemed to be "the date for the
determination of the holders of Common Shares entitled to receive such
distribution" for the purposes and within the meaning of Section 5.1(b)) and,
if the outstanding number of Common Shares shall be changed into a larger or
smaller number of Common Shares as a part of such reclassification, such change
shall be deemed a subdivision or combination, as the case may be, of the
outstanding Common Shares for the purposes and within the meaning of 
Section 5.1(a) (and the effective date of such reclassification shall be deemed
to be "the day upon which such subdivision or combination becomes effective" for
the purposes and within the meaning of Section 5.1(a)).

                 (d)      Distribution of Warrants or Other Rights to Holders
of Common Shares. In case at any time or from time to time after the Effective
Date the Company shall make a distribution to all holders of outstanding Common
Shares of any warrants, options or other rights to subscribe for or purchase
any Additional Common Shares or securities convertible into or exchangeable for
Additional Common Shares (other than a distribution of such warrants, options
or rights upon a merger or consolidation or sale to which Section 5.1(h)
applies), whether or not the rights to subscribe or purchase thereunder are
immediately exercisable, and the consideration per share for which Additional
Common Shares may at any time thereafter be issuable pursuant to such warrants
or other rights shall be less than the Current Market Price per Common Share on
the date fixed for determination of the holders of Common Shares entitled to
receive such distribution, then, and for each such case, effective immediately
after the opening of business on the day after the date for determination, the
number of Warrant Shares into which each Warrant is exercisable shall be
adjusted to that number determined by multiplying the number of Warrant Shares
into which each Warrant is exercisable at the opening of business on the day
after such date for determination by a fraction (not less than one), (i) the
numerator of which shall be the number of Common Shares outstanding at the close
of business on such date for determination plus the maximum number of
Additional Common Shares issuable pursuant to all such warrants or other rights
and (ii) the denominator of which shall be the number of Common Shares
outstanding at the close of business on such date for determination plus the
number of Common Shares that the minimum consideration received and receivable
by the Company for the issuance of such maximum number of Additional Common
Shares pursuant to the terms of such warrants or other rights would purchase at
such Current Market Price.

                 (e)      Superseding Adjustment of Number of Warrant Shares
into Which Each Warrant is Exercisable. In case at any time after any adjustment
of the number of Warrant Shares into which each Warrant is exercisable shall
have been made pursuant to Section 5.1(d) on the basis of the distribution of
warrants or other rights or after any new adjustment of the number of Warrant
Shares into which each Warrant is exercisable shall have been made pursuant to
this Section 5.1(e), such warrants or rights shall expire, and all or a
portion of such warrants or rights shall not have been





                                      -13-
<PAGE>   17
exercised, then, and in each such case, upon the election of the Company such
previous adjustment in respect of such warrants or rights which have expired
without exercise shall be rescinded and annulled as to any then outstanding
Warrants, and the Additional Common Shares that were deemed for purposes of the
computations set forth in Section 5.1(d) to have been issued or sold by virtue
of such adjustment in respect of such warrants or rights shall no longer be
deemed to have been distributed.

                 (f)      Other Provisions Applicable to Adjustments under this
Section. The following provisions shall be applicable to the making of
adjustments of the number of Warrant Shares into which each Warrant is
exercisable and to the Warrant Price under this Section 5.1:

                          (i)     Treasury Stock. The sale or other disposition
         of any issued Common Shares owned or held by or for the account of the
         Company shall be deemed an issuance or sale of Additional Common
         Shares for purposes of this Section 5. The Company shall not pay any
         dividend on or make any distribution on Common Shares held in the
         treasury of the Company. For the purposes of this Section 5.1, the
         number of Common Shares at any time outstanding shall not include
         shares held in the treasury of the Company but shall include shares
         issuable in respect of scrip certificates issued in lieu of fractions
         of Common Shares.

                          (ii)    When Adjustments Are to be Made. The
         adjustments required by Sections 5.1(a), 5.1(b), 5.1(c) and 5.1(d)
         shall be made whenever and as often as any specified event requiring
         an adjustment shall occur, except that no adjustment of the Warrant
         Shares into which each Warrant is exercisable that would otherwise be
         required shall be made unless and until such adjustment either by
         itself or with other adjustments not previously made increases or
         decreases the Warrant Shares into which each Warrant is exercisable
         immediately prior to the making of such adjustment by at least 1%. Any
         adjustment representing a change of less than such minimum amount
         (except as aforesaid) shall be carried forward and made as soon as
         such adjustment, together with other adjustments required by Sections
         5.1(a), 5.1(b), 5.1(c) and 5.1(d) and not previously made, would
         result in such minimum adjustment.

                          (iii)   Fractional Interests. In computing
         adjustments under this Section 5, fractional interests in Common
         Shares shall be taken into account to the nearest one-thousandth of a
         share.

                          (iv)    Deferral of Issuance upon Exercise. In any
         case in which this Section 5 shall require that an adjustment to the
         Warrant Shares into which each Warrant is exercisable be made
         effective pursuant to Section 5.1(a)(i), 5.1(b) or 5.1(d) prior to the
         occurrence of a specified event and any Warrant is exercised after the
         time at which the adjustment became effective but prior to the
         occurrence of such specified event, the Company may elect to defer
         until the occurrence of such specified event the issuing to the Holder
         of the Warrant Certificate evidencing such Warrant (or other Person
         entitled thereto) of, and may delay registering such Holder or other
         Person as the recordholder of, the Warrant





                                      -14-
<PAGE>   18
         Shares over and above the Warrant Shares issuable upon such exercise
         determined in accordance with Section 3.5 on the basis of the Warrant
         Shares into which each Warrant is exercisable prior to such adjustment
         determined in accordance with Section 3.5; provided, however, that the
         Company shall deliver to such Holder or other person a due bill or
         other appropriate instrument evidencing the right of such Holder or
         other Person to receive, and to become the record holder of, such
         Additional Common Shares, upon the occurrence of the event requiring
         such adjustment.

                 (g)      Warrant Price Adjustment. Whenever the number of
Warrant Shares into which a Warrant is exercisable is adjusted as provided in
this Section 5.1, the Warrant Price payable upon exercise of the Warrant shall
simultaneously be adjusted by multiplying such Warrant Price immediately prior
to such adjustment by a fraction, the numerator of which shall be the number of
Warrant Shares into which such Warrant was exercisable immediately prior to
such adjustment, and the denominator of which shall be the number of Warrant
Shares into which such Warrant was exercisable immediately thereafter.

                 (h)      Merger, Consolidation or Combination, In the event
the Company merges, consolidates or otherwise combines with or into any Person,
then, as a condition of such merger, consolidation or combination, lawful and
adequate provisions shall be made whereby Warrantholders shall, in addition to
their other rights hereunder, thereafter have the right to purchase and receive
upon the basis and upon the terms and conditions specified in this Agreement
upon exercise of the Warrants and in lieu of the Warrant Shares immediately
theretofore purchasable and receivable upon the exercise of the rights
represented hereby, such shares of stock, securities or assets as may be issued
or payable with respect to or in exchange for a number of outstanding Common
Shares equal to the number of Warrant Shares immediately theretofore
purchasable and receivable upon the exercise of the rights represented hereby,
and in any such case appropriate provision shall be made with respect to the
rights and interests of the Warrantholders to the end that the provisions
hereof (including, without limitation, provisions for adjustments of the number
of Warrant Shares) shall thereafter be applicable, as nearly as may be
practicable, in relation to any shares of stock, securities or assets
thereafter deliverable upon the exercise hereof.

                 (i)      Compliance with Governmental Requirements. Before
taking any action that would cause an adjustment reducing the Warrant Price
below the then par value of any of the Warrant Shares into which the Warrants
are exercisable, the Company will take any corporate action that may be
necessary in order that the Company may validly and legally issue fully paid
and nonassessable Warrant Shares at such adjusted Warrant Price.

                 (j)      Optional Tax Adjustment. The Company may at its
option, at any time during the term of the Warrants, increase the number of
Warrant Shares into which each Warrant is exercisable, or decrease the Warrant
Price, in addition to those changes required by Section 5.1(a), 5.1(b), 5.1(c),
5.1(d) or 5.1(g), as deemed advisable by the Board of Directors of the Company,
in order that any event treated for Federal income tax purposes as a dividend of
stock or stock rights shall not be taxable to the Recipients.





                                      -15-
<PAGE>   19
                 (k)      Warrants Deemed Exercisable. For purposes solely of
this Section 5, the number of Warrant Shares which the holder of any Warrant
would have been entitled to receive had such Warrant been exercised in full at
any time or into which any Warrant was exercisable at any time shall be
determined assuming such Warrant was exercisable in full at such time, although
such Warrant may not be exercisable in full at such time pursuant to Section
3.2(a).

                 (l)      Limitations on Certain Non-Stock Dividends. The
Company agrees that it will not declare or pay any Non-Stock Dividend subject
to Section 5.1(b) hereof to the extent that the fair market value of the
property or other assets to be distributed in respect of one Common Share equals
or exceeds the Current Market Price per Common Share at the date of
determination.

         5.2     Notice of Adjustment.

         Whenever the number of Warrant Shares into which a Warrant is
exercisable is to be adjusted, or the Warrant Price is to be adjusted, in
either case as herein provided, the Company shall compute the adjustment in
accordance with Section 5.1, and shall, promptly after such adjustment becomes
effective, cause a notice of such adjustment or adjustments to be given to all
Holders in accordance with Section 10.1(b).

         5.3     Statement on Warrant Certificates.

         Irrespective of any adjustment in the number or kind of shares into
which the Warrants are exercisable, Warrant Certificates theretofore or
thereafter issued may continue to express the same price and number and kind of
shares initially issuable pursuant to this Agreement

         5.4     Fractional Interest.

         The Company shall not issue fractional Warrant Shares on the exercise
of Warrants. If Warrant Certificates evidencing more than one Warrant shall be
presented for exercise at the same time by the same Holder, the number of full
Warrant Shares which shall be issuable upon such exercise thereof shall be
computed on the basis of the aggregate number of Warrants so to be exercised.
If any fraction of a Warrant Share would, except for the provisions of this
Section 5.4, be issuable on the exercise of any Warrant (or specified portion
thereof), the Company shall, in lieu of issuing any fractional Warrant Shares,
pay an amount in cash calculated by it to be equal to the then Current Market
Price per Common Share on the date of such exercise multiplied by such fraction
computed to the nearest whole cent. The Holders, by their acceptance of the
Warrant Certificates, expressly waive their right to receive any fraction of a
Warrant Share or a stock certificate representing a fraction of a Warrant
Share.





                                      -16-
<PAGE>   20
6.       LOSS OR MUTILATION

         Upon (i) receipt by the Company of evidence reasonably satisfactory to
the Company of the ownership of and the loss, theft, destruction or mutilation
of any Warrant Certificate and such reasonable and customary security or
indemnity as may be required by the Company to save the Company harmless and
(ii) surrender, in the case of mutilation, of the mutilated Warrant Certificate
to the Company and cancellation thereof, then, in the absence of notice to the
Company that the Warrants evidenced thereby have been acquired by a bona fide
purchaser, the Company shall execute and deliver to the registered Holder of the
lost, stolen, destroyed or mutilated Warrant Certificate, in exchange therefor
or in lieu thereof, a new Warrant Certificate of the same tenor and for a like
aggregate number of Warrants. At the written request of such registered Holder,
the new Warrant Certificate so issued shall be retained by the Company as having
been surrendered for exercise, in lieu of delivery thereof to such Holder, and
shall be deemed for purposes of Section 3.2 to have been surrendered for
exercise on the date the conditions specified in clauses (i) and (ii) of the
preceding sentence were first satisfied.

         Upon the issuance of any new Warrant Certificate under this Section 6,
the Company may require the payment of a sum sufficient to cover any tax or
other governmental charge that may be imposed in relation thereto.

         Every new Warrant Certificate executed and delivered pursuant to this
Section 6 in lieu of any lost, stolen or destroyed Warrant Certificate shall
constitute an additional contractual obligation of the Company, whether or not
the allegedly lost, stolen or destroyed Warrant Certificate shall be at any
time enforceable by anyone, and shall be entitled to the benefits of this
Agreement equally and proportionately with any and all other Warrant
Certificates duly executed and delivered hereunder.

         The provisions of this Section 6 are exclusive and shall preclude (to
the extent lawful) all other rights or remedies with respect to the replacement
of mutilated, lost, stolen, or destroyed Warrant Certificates.

7.       RESERVATION AND AUTHORIZATION OF WARRANT SHARES

         The Company shall at all times reserve and keep available, free from
preemptive rights, solely for issue upon the exercise of Warrants as herein
provided, such number of its authorized but unissued Warrant Share deliverable
upon the exercise of Warrants as will be sufficient to permit the exercise in
full of all outstanding Warrants. The Company covenants that all Warrant Shares
will, at all times that Warrants are exercisable, be duly approved for listing
subject to official notice of issuance on each securities exchange, if any, on
which the Common Shares are then listed. The Company covenants that (i) all
Warrant Shares that may be issued upon exercise of Warrants shall upon issuance
be duly and validly authorized, issued and fully paid and nonassessable and free
of preemptive or similar rights and (ii) the stock certificates issued to
evidence any such Warrant Shares will comply with Section 78 of the Nevada
Revised Statutes (or its successor) and any other applicable law.





                                      -17-
<PAGE>   21
         The Company hereby authorizes and directs its current and future
transfer agents for the Common Shares at all times to reserve stock
certificates for such number of authorized shares as shall be requisite for such
purpose. The Company will supply such transfer agents with duly executed stock
certificates for such purposes.

8.       WARRANT TRANSFER BOOKS

         The Company will maintain at the Corporate Office where Warrant
Certificates may be surrendered for registration of transfer or exchange and
where Warrant Certificates may be surrendered for exercise of Warrants
evidenced thereby. The Company, will give prompt written notice to all Holders
of Warrant Certificates of any change in the location of Corporate Office.

         The Warrant Certificates evidencing the Warrants shall be issued in
registered form only. The Company, shall cause to be kept at the Corporate
Office a warrant register (the "Warrant Register") in which, subject to such
reasonable regulations as the Company may prescribe and such regulations as may
be prescribed by law, the Company shall provide for the registration of Warrant
Certificates and of transfers or exchanges of Warrant Certificates as herein
provided.

         Subject to Section 2.4, upon surrender for registration of transfer of
any Warrant Certificate at the Corporate Office, the Company shall execute and
deliver, in the name of the designated transferee or transferees, one or more
new Warrant Certificates evidencing a like aggregate number of Warrants.

         Subject to Section 2.4, (i) at the option of the Holder, Warrant
Certificates may be exchanged at the Corporate Office upon payment of the
charges herein provided for other Warrant Certificates evidencing a like
aggregate number of Warrants and (ii) whenever any Warrant Certificates are so
surrendered for exchange, the Company shall execute and deliver the Warrant
Certificates of the same tenor and evidencing the same number of Warrants as
evidenced by the Warrant Certificates surrendered by the Holder making the
exchange.

         All Warrant Certificates issued upon any registration of transfer or
exchange of Warrant Certificates shall be the valid obligations of the Company,
evidencing the same obligations, and entitled to the same benefits under this
Agreement, as the Warrant Certificates surrendered for such registration of
transfer or exchange.

         Subject to Section 2.4, every Warrant Certificate surrendered for
registration of transfer or exchange shall (if so required by the Company) be
duly endorsed, or be accompanied by a written instrument of transfer in form
satisfactory to the Company, duly executed by the Holder thereof or his 
attorney duly authorized in writing.





                                      -18-
<PAGE>   22
9.       WARRANT HOLDERS

         9.1     Voting or Dividend Rights.

         Prior to the exercise of the Warrants, except as may be specifically
provided for herein, (i) no Holder of a Warrant Certificate, as such, shall be
entitled to any of the rights of a holder of Common Shares, including, without
limitation, the right to vote at or to receive any notice of any meetings of
stockholders; (ii) the consent of any Holder shall not be required with respect
to any action or proceeding of the Company; (iii) except as provided in 
Section 4, no Holder, by reason of the ownership or possession of a Warrant or 
the Warrant Certificate representing the same, shall have any right to receive
any stock dividends, allotments or rights or other distributions paid, allotted
or distributed or distributable to the stockholders of the Company prior to, or
for which the relevant record date preceded, the date of the exercise of such
Warrant; and (iv) no Holder shall have any right not expressly conferred by
this Agreement or Warrant Certificate held by such Holder.

         9.2     Rights of Action.

         All rights of action against the Company in respect of this Agreement
are vested in the Holders of the Warrant Certificates, and any Holder of any
Warrant Certificate, without the consent of the Holder of any other Warrant
Certificate, may, in such Holder's own behalf and for such Holder's own
benefit, enforce and may institute and maintain any suit, action or proceeding
against the Company suitable to enforce, or otherwise in respect of, such
Holder's right to exercise, exchange or tender for purchase such Holder's
Warrants in the manner provided in this Agreement,

         9.3     Treatment of Holders of Warrant Certificates.

         Every Holder of a Warrant Certificate, by accepting the same, consents
and agrees with the Company and with every subsequent holder of such Warrant
Certificate that, prior to due presentment of such Warrant Certificate for
registration of transfer, the Company may treat the Person in whose name the
Warrant Certificate is registered as the owner thereof for all purposes and as
the Person entitled to exercise the rights granted under the Warrants, and
neither the Company nor any agent of the Company shall be affected by any
notice to the contrary.

         9.4     Communications to Holders.

                 (a)      If any Holder of a Warrant Certificate applies in
writing to the Company and such application states that the applicant desires
to communicate with other Holders with respect to its rights under this
Agreement or under the Warrants, then the Company shall, within five (5)
Business Days after the receipt of such application, and upon payment to the
Company by such applicant of the reasonable expenses of preparing such list,
provide to such applicant a list of the names and addresses of all Holders of
Warrant Certificates as of the most recent practicable date.





                                      -19-
<PAGE>   23
                 (b)      Every Holder of Warrant Certificates, by receiving
and holding the same, agrees with the Company that neither the Company nor any
agent of either of the Company shall be held accountable by reason of the
disclosure of any such information as to the names and addresses of the Holders
in accordance with Section 9.4(a).

10.      NOTICES

         10.1    Notices Generally.

                 (a)      Any request, notice, direction, authorization,
consent, waiver, demand or other communication permitted or authorized by this
Agreement to be made upon, given or furnished to or filed with the Company by
the other party hereto or by any Holder shall be sufficient for every purpose
hereunder if in writing (including telecopy communication) and telecopied or
delivered by hand (including by courier service) as follows:

                          If to the Company, to it at:

                                  Belco Oil & Gas Corp.
                                  767 Fifth Avenue, 46th Floor
                                  New York, New York 10583

                                  Attention: Chief Executive Officer
                                  Telecopy No.: (212) 644-2230

                          If to a Holder, to it at:

                                  to the address provided
                                  to Company upon issuance
                                  of the Warrants

or, in either case, such other address as shall have been set forth in a notice
delivered in accordance with this Section 10.1(a).

         All such communications shall, when so telecopied or delivered by
hand, be effective when telecopied with confirmation of receipt or received by
the addressee, respectively.

         Any Person that telecopies any communication hereunder to any Person
shall, on the same date as such telecopy is transmitted, also send, by first
class mail, postage prepaid and addressed to such Person as specified above, an
original copy of the communication so transmitted.

                 (b)      Where this Agreement provides for notice to Holders
of any event, such notice shall be sufficiently given (unless otherwise herein
expressly provided) if in writing and mailed, first-class postage prepaid, to
each Holder affected by such event, at the address of such Holder as





                                      -20-
<PAGE>   24
it appears in the Warrant Register, not later than the latest date, and not
earlier than the earliest date, prescribed for the giving of such notice. In
any case where notice to Holders is given by mail, neither the failure to mail
such notice, nor any defect in any notice so mailed, to any particular Holder
shall affect the sufficiency of such notice with respect to other Holders.
Where this Agreement provides for notice in any manner, such notice may be
waived in writing by the Person entitled to receive such notice, either before
or after the event, and such waiver shall be the equivalent of such notice.

         In case by reason of the suspension of regular mail service or by
reason of any other cause it shall be impracticable to give such notice by
mail, then such notification as shall be made by a method reasonably approved
in good faith by the Company as one which would be most reliable under the
circumstances for successfully delivering the notice to the addresses shall
constitute a sufficient notification for every purpose hereunder.

         10.2    Required Notices to Holders.

         In case the Company shall propose (i) to pay any dividend payable in
stock of any class to the holders of its Common Shares or to make any other
distribution to the holders of its Common Shares for which an adjustment is
required to be made pursuant to Section 5, (ii) to distribute to the holders of
its Common Shares rights to subscribe for or to purchase any Additional Common
Shares or shares of stock of any class or any other securities, rights or
options, (iii) to effect any reclassification of its Common Shares, (iv) to
effect any transaction described in Section 5.1(h) or (v) to effect the
liquidation, dissolution or winding up of the Company, then, and in each such
case, the Company shall give to each Holder of a Warrant Certificate, in
accordance with Section 10.1(b), a notice of such proposed action or event.
Such notice shall specify (x) the date on which a record is to be taken for the
purposes of such dividend or distribution; and (y) the date on which such
reclassification, transaction, event, liquidation, dissolution or winding up is
expected to become effective and the date as of which it is expected that
holders of Common Shares of record shall be entitled to exchange their Common
Shares for securities, cash or other property deliverable upon such
reclassification, transaction, event, liquidation, dissolution or winding up.
Such notice shall be given, in the case of any action covered by clause (i) or
(ii) above, at least ten (10) days prior to the record date for determining
holders of the Common Shares for purposes of such action or, in the case of any
action covered by clauses (iii) through (v), at least twenty (20) days prior to
the applicable effective or expiration date specified above or, in any such
case, prior to such earlier time as notice thereof shall be required to be
given pursuant to Rule 10b-17 under the Exchange Act, if applicable.

         If at any time the Company shall cancel any of the proposed
transactions for which notice has been given under this Section 10.2 prior to
the consummation thereof, the Company shall give each Holder prompt notice of
such cancellation in accordance with Section 10.1(b) hereof.





                                      -21-
<PAGE>   25
11.      APPLICABLE LAW

         THIS AGREEMENT, EACH WARRANT CERTIFICATE ISSUED HEREUNDER, EACH
WARRANT EVIDENCED THEREBY AND ALL RIGHTS ARISING HEREUNDER SHALL BE GOVERNED BY
AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, WITHOUT
GIVING EFFECT TO PRINCIPLES OF CONFLICTS OF LAWS TO THE EXTENT THE APPLICATION
OF THE LAW OF ANOTHER JURISDICTION WOULD BE REQUIRED THEREBY.

12.      PERSONS BENEFITTING

         This Agreement shall be binding upon and inure to the benefit of the
Company and JEDI, and their respective successors and assigns and the Holders
from time to time of the Warrant Certificates. Nothing in this Agreement is
intended or shall be construed to confer upon any Person, other than the
Company, JEDI and the Holders of the Warrant Certificates, any right, remedy or
claim under or by reason of this Agreement or any part hereof. Each Holder, by
acceptance of a Warrant Certificate, agrees to all of the terms and provisions
of this Agreement applicable thereto.

13.      COUNTERPARTS

         This Agreement may be executed in any number of counterparts each of
which shall for all purposes be deemed to be an original, and all such
counterparts shall together constitute but one and the same instrument.

14.      AMENDMENTS

         This Agreement may be amended by the Company only with the consent of
the Holders of a majority of the then outstanding Warrants. Notwithstanding the
foregoing, the consent of each Holder of a Warrant affected shall be required
for any amendment pursuant to which the Warrant Price would be increased or the
number of Warrant Shares purchasable upon exercise of Warrants would be
decreased (other than pursuant to adjustments provided herein).

         Upon execution and delivery of any amendment pursuant to this 
Section 14, such amendment shall be considered a part of this Agreement for all
purposes and every Holder of a Warrant Certificate theretofore or thereafter
delivered hereunder shall be bound thereby.

         Promptly after the execution by the Company of any such amendment, the
Company shall give notice to the Holders of Warrant Certificates, setting forth
in general terms the substance of such amendment, in accordance with the
provisions of Section 10.1(b). Any failure of the Company to mail such notice
or any defect therein, shall not, however, in any way impair or affect the
validity of any such amendment.





                                      -22-
<PAGE>   26
15.      INSPECTION

         The Company may require such Holder to submit his Warrant Certificate
for inspection by it.

16.      SUCCESSOR TO THE COMPANY

         So long as Warrants remain outstanding, the Company will not enter
into any Non-Surviving Combination unless the acquirer (or its parent company
under any triangular acquisition) shall expressly assume by a supplemental
agreement, executed and delivered to the Company, in form reasonably
satisfactory to the Company, the due and punctual performance of every covenant
of this Agreement on the part of the Company to be performed and observed and
shall have provided for exercise rights in accordance with Section 5.1(h). Upon
the consummation of such Non-Surviving Combination, the acquirer (or its parent
company under any triangular acquisition) shall succeed to, and be substituted
for, and may exercise every right and power of, the Company under this
Agreement with the same effect as if such acquirer (or its parent company under
any triangular acquisition) had been named as the Company herein.

17.      ENTIRE AGREEMENT

         This Agreement sets forth the entire agreement of the parties hereto
as to the subject matter hereof and supersedes all previous agreements among
all or some of the parties hereto with respect thereto, whether written, oral
or otherwise.

18.      HEADINGS

         The descriptive headings of the several Sections of this Agreement are
inserted for convenience and shall not control or affect the meaning or
construction of any of the provisions hereof.





                                      -23-
<PAGE>   27
         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be duly executed and delivered as of the day and year first above written.


                               BELCO OIL & GAS CORP.

                               By: /s/ ROBERT A. BELFER
                                   ---------------------------------------------
                                   Robert A. Belfer, Chairman of the Board and
                                   Chief Executive Officer
                               
                               JOINT ENERGY DEVELOPMENT INVESTMENTS
                               LIMITED PARTNERSHIP
                               
                               By: Enron Capital Management Limited Partnership,
                                   its general partner
                               
                               By: Enron Capital Corp., its general partner
                               
                               By: /s/ TIMOTHY J. DETMERING
                                   ---------------------------------------------
                               Name: Timothy J. Detmering
                                     -------------------------------------------
                               Title: Agent and Attorney-In-Fact
                                      ------------------------------------------





                                      -24-
<PAGE>   28
                                                                       EXHIBIT A

                       FORM OF FACE OF WARRANT CERTIFICATE

          THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN
          REGISTERED UNDER THE SECURITIES ACT OF 1933 OR THE SECURITIES LAWS OF
          ANY STATE AND MAY NOT BE SOLD OR OTHERWISE DISPOSED OF EXCEPT PURSUANT
          TO AN EFFECTIVE REGISTRATION STATEMENT UNDER SUCH ACT AND APPLICABLE
          STATE SECURITIES LAWS OR AN APPLICABLE EXEMPTION TO THE REGISTRATION
          REQUIREMENTS OF SUCH ACT OR SUCH LAWS.

                              BELCO OIL & GAS CORP.

                               WARRANT CERTIFICATE
                                   EVIDENCING
                       WARRANTS TO PURCHASE COMMON SHARES

No. ______________                                      _______________ Warrants

     THIS CERTIFIES THAT, for value received, _______________________________
____________________, or registered assigns, is the registered owner of
______________________ Warrants to Purchase Common Shares of Belco Oil & Gas
Corp., a Nevada corporation (the "Company," which term includes any successor
thereto under the Warrant Agreement), and is entitled, subject to and upon
compliance with the provisions hereof and of the Warrant Agreement, at such
Holder's option, at any time when the Warrants evidenced hereby are exercisable,
to purchase from the Company one Warrant Share for each Warrant evidenced
hereby, at the purchase price of $27.50 per share (as adjusted from time to
time, the "Warrant Price"), payable in full at the time of purchase, the number
of Warrant Shares into which and the Warrant Price at which each Warrant shall
be exercisable, each being subject to adjustment as provided in Section 5 of the
Warrant Agreement.

     The Holder of this Warrant Certificate may exercise all or any whole number
of the Warrants evidenced hereby, on any Business Day on and after the Trigger
Date until 5:00 p.m., New York City time, on November __, 2000 (subject to
earlier expiration pursuant to Section 4 of the Warrant Agreement, the
"Expiration Date") for the Warrant Shares purchasable hereunder.



                                      A-1
<PAGE>   29



     Reference is hereby made to the further provisions of this Warrant
Certificate set forth on the reverse hereof, which further provisions shall for
all purposes have the same effect as if set forth at this place.



                                      A-2
<PAGE>   30



     IN WITNESS WHEREOF, the Company has caused this certificate to be duly
executed under its corporate seal.

                                     BELCO OIL & GAS CORP.



[SEAL]                               By:
                                        ----------------------------------------
                                        Robert A. Belfer, Chairman of the Board
                                        and Chief Executive Officer

ATTEST:


- ---------------------------
Dated:




                                      A-3
<PAGE>   31

                        [REVERSE OF WARRANT CERTIFICATE]

                              BELCO OIL & GAS CORP.

                                WARRANT CERTIFICATE
                                   EVIDENCING
                       WARRANTS TO PURCHASE COMMON SHARES

1.   General.

     The Warrants evidenced hereby are one of a duly authorized issue of
Warrants of the Company designated as its Warrants to Purchase Common Shares
("Warrants"), limited in aggregate number to ______ Warrants issued under and
in accordance with the Warrant Agreement, dated as of November __, 1997 (the
"Warrant Agreement"), between the Company and Joint Energy Development
Investments Limited Partnership, a Delaware limited partnership ("JEDI"), to
which Warrant Agreement and all amendments thereto reference is hereby made for
a statement of the respective rights, limitations of rights, duties and
immunities thereunder of the Company, JEDI, the Holders of Warrant Certificates
and the owners of the Warrants evidenced thereby and of the terms upon which the
Warrant Certificates are, and are to be, delivered. A copy of the Warrant
Agreement shall be available at all reasonable times at the Corporate Office for
inspection by the Holder hereof.

     In the event of the exercise of less than all of the Warrants evidenced
hereby, a new Warrant Certificate of the same tenor and for the number of
Warrants which are not exercised shall be issued by the Company in the name or
upon the written order of the Holder of this Warrant Certificate upon the 
cancellation hereof.

     All Warrant Shares issuable by the Company upon the exercise of Warrants
shall, upon such issuance, be duly authorized, validly issued, fully paid and
nonassessable and free of preemptive or similar rights. The Company shall pay
any and all taxes (other than income taxes) that may be payable in respect of
the issue or delivery of Warrant Shares on exercise of Warrants. The Company
shall not be required, however, to pay any tax or other charge imposed in
respect of any transfer involved in the issue and delivery of any certificates
for Warrant Shares or payment of cash to any Person other than the Holder of the
Warrant Certificate surrendered upon the exercise of a Warrant, and in case of
such transfer or payment, the Company shall not be required to issue or deliver
any certificate or pay any cash until (a) such tax or charge has been paid or an
amount sufficient for the payment thereof has been delivered to the Company or
(b) it has been established to the Company's satisfaction that any such tax or
other charge that is or may become due has been paid.

     The Warrant Certificates are issuable only in registered form in
denominations of whole numbers of Warrants. Upon surrender at the Corporate
Office and payment of the charges specified herein and in the Warrant Agreement,
this Warrant Certificate may be exchanged for Warrant Certificates in other
authorized denominations or the transfer hereof may be registered in whole or in
part in authorized denominations to one or more designated transferees, subject
to the restrictions



                                       A-4


<PAGE>   32



on transfer set forth herein and in the Warrant Agreement; provided, however,
that such other Warrant Certificates issued upon exchange or registration of
transfer shall evidence the same aggregate number of Warrants as this Warrant
Certificate. The Company shall cause to be kept at the Corporate Office the
Warrant Register in which, subject to such reasonable regulations as the Company
may prescribe and such regulations as may be prescribed by law, the Company
shall provide for the registration of Warrant Certificates and of transfers or
exchanges of Warrant Certificates.

2.   Expiration.

     Except as provided in the Warrant Agreement, all outstanding Warrants shall
expire and all rights of the Holders of Warrant Certificates evidencing such
Warrants shall terminate and cease to exist, as of 5:00 p.m., New York time, on
the Expiration Date. "Expiration Date" shall mean November ___, 2000, or such
earlier date as determined in accordance with the Warrant Agreement.

3.   Liquidation of the Company.

     If, on or prior to the Expiration Date, the Company (or any other Person
controlling the Company) shall propose a voluntary or involuntary dissolution,
liquidation or winding up of the affairs of the Company, each Warrantholder
shall receive the securities, money or other property which such Warrantholder
would have been entitled to receive had such Warrantholder been the holder of
record of the Warrant Shares into which the Warrants were exercisable
immediately prior to such dissolution, liquidation or winding up (net of the
then applicable Warrant Price), and the rights to exercise such Warrants shall
terminate.

4.   Anti-Dilution Adjustments.

     The number of Warrant Shares issuable upon exercise of a Warrant shall be
adjusted on occurrence of certain events, including, without limitation, the
payment of certain dividends on, or the making of certain distributions in
respect of, the Common Shares, including the distribution of rights to purchase
Common Shares (or securities convertible into or exchangeable for Common Shares)
at a price below the Current Market Price. An adjustment shall also be made in
the event of a combination, subdivision or reclassification of the Common
Shares. Adjustments will be made whenever and as often as any specified event
requires an adjustment to occur.

5.   Procedure for Exercising Warrant.

     Subject to the provisions hereof and of the Warrant Agreement, the Holder
of this Warrant Certificate may exercise all or any whole number of the Warrants
evidenced hereby by either of the following methods:



                                      A-5


<PAGE>   33


         (A) The Holder may deliver to the Corporate Office (i) a written notice
     of such Holder's election to exercise all or a portion of the Warrants
     evidenced hereby, duly executed by such Holder in the form set forth below,
     which notice shall specify the number of Warrant Shares to be purchased,
     (ii) this Warrant Certificate and (iii) a sum equal to the aggregate 
     Warrant Price for the Warrant Shares into which the Warrants represented by
     this Warrant Certificate are being exercised, which sum shall be paid in
     any combination elected by such Holder of (x) certified or official bank
     checks in New York Clearing House funds payable to the order of the Company
     and delivered to the Corporate Office, or (y) wire transfers in immediately
     available funds to the account of the Company at such banking institution
     as the Company shall have given notice to the Holders in accordance with
     the Warrant Agreement; or

         (B) The Holder may also exercise all or any of the Warrants in a
     "cashless" or "net-issue" exercise by delivering to the Company at the
     Corporate Agency Office (i) a written notice of such Holder's election to
     exercise all or a portion of the Warrants evidenced hereby, duly executed
     by such Holder in the form set forth below, which notice shall specify the
     number of Warrant Shares to be delivered to such Holder and the number of
     Warrant Shares with respect to which Warrants represented by this Warrant
     Certificate are being surrendered in payment of the aggregate Warrant Price
     for the Warrant Shares to be delivered to the Holder, and (ii) this Warrant
     Certificate. For purposes of this subparagraph (B), each Warrant Shares as
     to which such Warrants are surrendered in payment of the aggregate Warrant
     Price will be attributed a value equal to (x) the Current Market Price per
     share of Common Shares minus (y) the then-current Warrant Price.

6.   Registered Holder.

     Prior to due presentment of this Warrant Certificate for registration of
transfer, the Company and any agent of the Company may treat the Person in whose
name this Warrant Certificate is registered as the owner hereof for all
purposes, and neither the Company nor any agent of the Company shall be affected
by notice to the contrary.

7.   Amendment.

     The Warrant Agreement permits, with certain exceptions as therein provided,
the amendment thereof and the modification of the rights and obligations of the
Company and the rights of the Holders of Warrant Certificates under the Warrant
Agreement at any time by the Company with the consent of the Holders of Warrant
Certificates evidencing a majority of the then outstanding Warrants.



                                      A-6
<PAGE>   34



8.   Status as Warrantholder.

     Prior to the exercise of the Warrants, except as may be specifically
provided for in the Warrant Agreement, (i) no Holder of a Warrant Certificate,
as such, shall be entitled to any of the rights of a holder of Common Shares of
the Company, including, without limitation, the right to vote at, or to receive
any notice of, any meetings of stockholders of the Company; (ii) the consent of
any Holder shall not be required with respect to any action or proceeding of the
Company; (iii) except as provided with respect to the dissolution, liquidation
or winding up of the Company, no Holder, by reason of the ownership or
possession of a Warrant or the Warrant Certificate representing the same, shall
have any right to receive any stock dividends, allotments or rights or other
distributions (except as specifically provided in the Warrant Agreement), paid,
allotted or distributed or distributable to the stockholders of the Company
prior to or for which the relevant record date preceded the date of the exercise
of such Warrant; and (iv) no Holder shall have any right not expressly conferred
by the Warrant Agreement or Warrant Certificate held by such Holder.
Notwithstanding anything herein to the contrary, if the Company declares and
pays any cash dividend or makes any distribution in cash in respect of its
Common Shares, it shall pay each Holder of Warrants an amount in cash equal to
the amount that such Holder would have received had it been a holder of record
of the Warrant Shares issuable upon exercise of its Warrants immediately prior
to the record date for such dividend or distribution.

9.   Governing Law.

     THIS WARRANT CERTIFICATE, EACH WARRANT EVIDENCED THEREBY AND THE WARRANT
AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE
STATE OF NEW YORK, WITHOUT GIVING EFFECT TO PRINCIPLES OF CONFLICTS OF LAWS TO
THE EXTENT THAT APPLICATION OF THE LAW OF ANOTHER JURISDICTION WOULD BE REQUIRED
THEREBY.

10.  Definitions.

     All terms used in this Warrant Certificate which are defined in the Warrant
Agreement shall have the meanings assigned to them in the Warrant Agreement.





                                      A-7
<PAGE>   35
                                FORM OF EXERCISE

     In accordance with and subject to the terms and conditions hereof and of
the Warrant Agreement, the undersigned registered Holder of this Warrant
Certificate hereby irrevocably elects to exercise ____________________ Warrants
evidenced by this Warrant Certificate or represents that such Holder has
tendered the Warrant Price for each of the Warrants evidenced hereby being
exercised in the aggregate amount of $_________ in the indicated combination of:

         (i)  cash ($____________);

         (ii) certified bank check payable to the order of the Company
     ($___________ );

         (iii) official bank check in New York Clearing House funds payable to
     the order of the Company ($____________);

         (iv) or wire transfer in immediately available funds to the account
     designated by the Company for such purpose ($____________); or

         (v) "cashless" or "net-issue" exercise with respect to ___________
     Warrants pursuant to Section 3.2(c)(ii) of the Warrant Agreement and
     Section 5(A) of this Warrant Certificate.

     The undersigned requests that the Warrant Shares issuable upon exercise be
in fully registered form in such denominations and registered in such names and
delivered, together with any other property receivable upon exercise, in such
manner as is specified in the instructions set forth below.

     If the number of Warrants exercised is less than all of the Warrants
evidenced hereby, the undersigned requests that a new Warrant Certificate
representing the remaining Warrants evidenced hereby be issued and delivered to
the undersigned unless otherwise specified in the instructions below.



                                      A-8
<PAGE>   36
Dated:                                  Name:
      ------------------------------         -----------------------------------
                                             (Please Print)   
- ------------------------------------
(Insert Social Security or Other
Identifying Number of Holder)           Address:
                                        ----------------------------------------

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


                                        ----------------------------------------
                                        Signature



Signature Guaranteed:



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

     Instructions (i) as to denominations and names of Warrant Shares issuable
upon exercise and as to delivery of such securities and any other property
issuable upon exercise and (ii) if applicable, as to Warrant Certificates
evidencing unexercised Warrants:


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

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

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



                                      A-9
<PAGE>   37
    
                                   Assignment

     (Form of Assignment To Be Executed If Holder Desires To Transfer Warrant
Certificate)

     FOR VALUE RECEIVED ___________________ hereby sells, assigns and transfers
unto

     Please insert social security
     or other identifying number

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



- --------------------------------------------------
(Please print name and address including zip code) 
      
- --------------------------------------------------

the Warrants represented by the within Warrant Certificate and does hereby
irrevocably constitute and appoint ___________________ Attorney, to transfer
said Warrant Certificate on the books of the within-named Company with full
power of substitution in the premises.


Dated:                               
                                             ---------------------------------
                                             Signature

Signature Guaranteed:


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



                                      A-10

<PAGE>   1
                                                                       EXHIBIT 2

                          REGISTRATION RIGHTS AGREEMENT

     This REGISTRATION RIGHTS AGREEMENT (this "Agreement"), dated as of
November 26, 1997, is between Belco Oil & Gas Corp., a Nevada corporation (the
"Company"), and Joint Energy Development Investments Limited Partnership, a
Delaware limited partnership (the "Shareholder").

                                R E C I T A L S:

     WHEREAS, the Company and the Shareholder are simultaneously consummating
the transactions contemplated by the Agreement and Plan of Merger, dated 
October 31, 1997, by and among the Company, Belco Acquisition Sub, Inc., a
Delaware corporation, and Coda Energy, Inc., a Delaware corporation (the "Merger
Agreement");

     WHEREAS, pursuant to the Merger Agreement, the Shareholder is receiving
unregistered warrants (the "Warrants") to purchase shares of Common Stock, par
value $0.01 per share, of the Company (the "Common Stock") in a private offering
transaction (the "Transaction"); and

     WHEREAS, under the provisions of the Securities Act of 1933, as amended
(the "Securities Act"), and the General Rules and Regulations promulgated by the
Securities and Exchange Commission ("SEC") thereunder, the Shareholder will be
limited in the manner of the sale of the shares of Common Stock received upon
exercise of the Warrants, absent registration under the Securities Act of the
sale of such shares of Common Stock or the availability of exemption from the
registration requirements of the Securities Act.

                               A G R E E M E N T:

     NOW, THEREFORE, in consideration of the premises and the mutual covenants
and agreements contained herein, the parties hereby agree as follows:

     1. Definitions. The following terms have the meaning ascribed to them
hereto.

        "Exchange Act" means the Securities Exchange Act of 1934, as amended.

        "Holder" means the Shareholder or any assignee or transferee of one or
more shares of Restricted Stock.

        "Restricted Stock" means the shares of Common Stock issued or issuable
to the Shareholder pursuant to the Warrants and any shares of Common Stock
issued as a dividend or other distribution with respect to or in exchange for or
in replacement of the shares of Common Stock issued pursuant to the Warrants. 
Any Restricted Stock will cease to be Restricted Stock when (i) a registration
statement covering such Restricted Stock has been declared effective by the
Commission and the Restricted Stock has been disposed of pursuant to such
effective registration statement, (ii)




<PAGE>   2



the Restricted Stock is sold under circumstances in which all of the applicable
conditions of Rule 144 (or any similar provisions then in force) under the
Securities Act are met or (iii) the Restricted Stock has been otherwise
transferred, the Company has delivered a new certificate or other evidence of
ownership for the Restricted Stock not bearing a legend restricting further
transfer, and the Restricted Stock may be resold without subsequent registration
under the Securities Act.

        "Registration Statement" means the registration statement contemplated
by this Agreement.

        "Selling Holder" means a Holder who is selling Restricted Stock
pursuant to the Registration Statement.

     2. Shelf Registration. Subject to the provisions of Section 3, the Company
agrees that it shall prepare and file with the SEC, no later than the date that
is 10 months after the closing of the Transaction, a registration statement (the
"Pre-Exercise Registration Statement") on any form for which the Company then
qualifies and the Company considers appropriate and which is available for
resales of the Restricted Stock pursuant to Rule 415 of the General Rules and
Regulations of the SEC promulgated under the Securities Act or, in the event
that the SEC does not permit the Company to register the Restricted Stock
pursuant to the Registration Statement prior to the exercise of the Warrants,
the Company agrees that, upon written notice from JEDI, it shall prepare and
file a registration statement (the "Post-Exercise Registration Statement") on
any form for which the Company then qualifies and the Company considers
appropriate and which is available for resales of the Restricted Stock pursuant
to Rule 415 of the General Rules and Regulations of the SEC promulgated under
the Securities Act (the Pre-Exercise Registration Statement and the
Post-Exercise Registration Statement are collectively referred to as the
"Registration Statement"). Subject to the provisions of Section 3, the Company
further agrees to use its reasonable efforts to cause the Registration Statement
to be declared effective as soon as practicable thereafter and to use its
reasonable efforts to cause the Registration Statement to continue to be
effective until the earlier of (i) the date that is the third anniversary of the
closing of the Transaction and (ii) the first date on which there are not
remaining any shares of Restricted Stock. Prior to the filing of either the
Pre-Exercise Registration Statement or the Post-Exercise Registration Statement,
the Company shall request from each Holder the number of shares of Restricted
Stock desired to be included in such Registration Statement by such Holder;
provided that the Company shall only be required to include in the Post-Exercise
Registration Statement shares of Restricted Stock that have been issued by the
Company pursuant to the exercise of Warrants prior to the filing of the
Post-Exercise Registration Statement. Subject to the provisions of this Section
2 and of Section 3 below, the Company will include in the Registration Statement
all shares of Restricted Stock with respect to which the Company has received
written requests for inclusion therein within twenty (20) days after the receipt
by the applicable Holder of the Company's notice. Each such request from a
Holder will specify the number of shares of Restricted Stock to be registered.
Unless the Holder or Holders of a majority of the Restricted Stock to be
registered in the Registration Statement shall consent in writing, the Company
shall not include any other securities under the Registration Statement.



                                      -2-
<PAGE>   3



     3. Registration Procedures. Whenever, pursuant to Section 2, the Holders of
Restricted Stock have requested that any Restricted Stock be included for
registration pursuant to the Registration Statement, the Company will, subject
to the provisions of Section 5, use all reasonable efforts to effect the
registration of such Restricted Stock in accordance with the intended method of
disposition thereof as promptly as practicable, and in connection with any such
request, the Company shall:

         (A) prepare and file with the SEC the Registration Statement on any
     form for which the Company then qualifies and which counsel for the Company
     shall deem appropriate and which form shall be available for the sale or
     distribution of such Restricted Stock in accordance with the intended
     method of distribution thereof, and use its reasonable efforts to cause the
     Registration Statement to become effective as soon as practicable after
     filing; provided, (i) that before filing the Registration Statement or
     prospectus or any amendments or supplements thereto, the Company will
     furnish to one counsel selected by the Holders of a majority in number of
     shares of the Restricted Stock covered by the Registration Statement copies
     of all such documents proposed to be filed, which documents will be subject
     to the review and comment of such counsel, and (ii) that after the filing
     of the Registration Statement, the Company will promptly notify each
     selling Holder of Restricted Stock of any stop order issued or, to the
     knowledge of the Company, threatened by the SEC and take all reasonable
     actions to prevent the entry of such stop order or to remove it if entered;

         (B) prepare and file with the SEC such amendments and supplements to
     the Registration Statement and the prospectus used in connection therewith
     as may be necessary to keep the Registration Statement effective for the
     period referred to in Section 2, and comply with the provisions of the
     Securities Act with respect to the disposition of all securities covered by
     the Registration Statement during such period in accordance with the
     intended methods of disposition by the selling Holders thereof set forth in
     the Registration Statement;

         (C) as soon as reasonably practicable, furnish to such selling Holder,
     prior to filing the Registration Statement, copies of the Registration
     Statement as proposed to be filed, and thereafter furnish to such selling
     Holder such number of copies of the Registration Statement, each amendment
     and supplement thereto (in each case, if specified by such Holder,
     including all exhibits thereto), the prospectus included in the
     Registration Statement (including each preliminary prospectus) and such
     other documents as such selling Holder may reasonably request in order to
     facilitate the disposition of the Restricted Stock owned by such selling
     Holder;

         (D) with reasonable promptness, use its reasonable efforts to register
     or qualify such Restricted Stock under such other securities or blue sky
     laws of such jurisdictions within the United States as any selling Holder
     reasonably (in light of such selling Holder's intended plan of 
     distribution) requests and do any and all other acts and things which may




                                      -3-
<PAGE>   4
     be reasonably necessary or advisable to enable such selling Holder to
     consummate the disposition in such jurisdictions of the Restricted Stock
     owned by such selling Holder, provided that the Company will not be
     required to (i) qualify generally to do business in any jurisdiction where
     it would not otherwise be required to qualify but for this subsection (D),
     or (ii) subject itself to taxation in any such jurisdiction.

         (E) with reasonable promptness, use reasonable efforts to cause the
     Restricted Stock covered by the Registration Statement to be registered
     with or approved by such other governmental agencies or authorities as may
     be necessary by virtue of the business and operations of the Company to
     enable the selling Holder or Holders thereto to consummate the disposition
     of such Restricted Stock;

         (F) promptly notify each selling Holder of such Restricted Stock, at
     any time when a prospectus relating thereto is required to be delivered
     under the Securities Act, of the occurrence of any event known to the
     Company (or made known to the Company pursuant to the last sentence of the
     last paragraph of this Section 3) requiring the preparation of a supplement
     or amendment to such prospectus so that, as thereafter delivered to the
     purchasers or recipients of such Restricted Stock, such prospectus will not
     contain an untrue statement of a material fact or omit to state any
     material fact required to be stated therein or necessary to make the
     statements therein not misleading, promptly prepare and file (and if
     applicable, take all reasonable actions to have any amendment declared
     effective) any required supplement or amendment, and promptly make
     available to each selling Holder any such supplement or amendment;

         (G) with reasonable promptness make available for inspection by any
     selling Holder and any attorney, accountant or other agent retained by any
     such selling Holder (collectively, the "Inspectors"), all financial and
     other records, pertinent corporate documents and the properties of the
     Company (collectively, the "Records") as shall be reasonably necessary to
     enable them to exercise their due diligence responsibility, if any, and
     cause the Company's officers and employees to supply all information
     reasonably requested for such purpose by any such Inspector in connection
     with such registration statement. Each Inspector that actually reviews
     Records supplied by the Company that include information that the Company
     identifies, in good faith, to be confidential ("Confidential Information")
     shall be required, prior to any such review, to execute an agreement with
     the Company providing that such Inspector shall not publicly disclose any
     Confidential Information unless such disclosure is required by applicable
     law or legal process. Each selling Holder of Restricted Stock agrees that
     material Confidential Information obtained by it as a result of such
     inspections shall not be used by it as the basis for any transactions in
     securities of the Company unless and until such information is made
     generally available to the public. Each selling Holder of Restricted Stock
     further agrees that it will, upon learning that disclosure of Confidential
     Information is sought in a court of competent jurisdiction, give notice to
     the Company and allow the Company, at its expense, to undertake appropriate
     action to prevent disclosure of the Confidential Information. Each selling
     Holder also agrees that the due





                                      -4-
<PAGE>   5

     diligence investigation made by the Inspectors shall be conducted in a
     manner which shall not unreasonably disrupt the operations of the Company
     or the work performed by the Company's officers and employees;

         (H) otherwise use its reasonable efforts to comply with all applicable
     rules and regulations of the SEC, and make available to its security
     holders, as soon as reasonably practicable, an earnings statement covering
     a period of twelve months, beginning within three months after the
     effective date of the Registration Statement, which earnings statement
     shall satisfy the provisions of Section 11(a) of the Securities Act; and

         (I) with reasonable promptness, use its reasonable efforts to cause all
     such Restricted Stock to be listed on each securities exchange on which the
     Common Stock of the Company is then listed.

     Each selling Holder of Restricted Stock agrees that, upon receipt of any
notice from the Company of the happening of any event of the kind described in
subsection (F) hereof, such selling Holder will forthwith discontinue
disposition of Restricted Stock pursuant to the Registration Statement covering
such Restricted Stock until such selling Holder's receipt of the copies of the
supplemented or amended prospectus contemplated by subsection (F) hereof. Each
selling Holder also agrees to notify the Company if any event relating to such
selling Holder occurs which would require the preparation of a supplement or
amendment to the prospectus so that such prospectus will not contain an untrue
statement of a material fact or omit to state a material fact required to be
stated therein or necessary to make the statements therein not misleading.

     4. Conditions and Limitations. The Company's obligations under Section 2
with respect to any selling Holder shall be subject to the limitation that the
Company shall have received the information and documents specified in Section 5
and such selling Holder shall have observed or performed in all material
respects its other covenants and conditions contained in such Section and
Section 7.

     5. Information From and Certain Covenants of Holders of Restricted Stock.
Notices and requests delivered to the Company by Holders from whom Restricted
Stock is to be registered pursuant to this Agreement shall contain such
information regarding the Restricted Stock to be so registered, the Holder and
the intended method of disposition of such Restricted Stock as shall reasonably
be required in connection with the action to be taken under the Securities Act.
Any Holder whose Restricted Stock is included in the Registration Statement
pursuant to this Agreement shall execute all consents, powers of attorney and
other documents reasonably required to be signed by it in order to cause the
Registration Statement to become effective. Each selling Holder covenants that,
in disposing of such Holder's shares, such Holder shall comply with Regulation M
of the SEC adopted pursuant to the Exchange Act.

     6. Registration Expenses. All Registration Expenses (as defined herein)
will be borne by the Company. Undervoting discounts and commissions applicable
to the sale of Restricted Stock





                                      -5-
<PAGE>   6

shall be borne by the Holder of the Restricted Stock to which such discount or
commission relates, and each selling Holder shall be responsible for the fees
and expenses of any legal counsel, accountants or other agents retained by such
selling Holder and all other out-of-pocket expenses incurred by such selling
Holder in connection with any registration under this Agreement.

     As used herein, the term "Registration Expenses" means all expenses
incident to the Company's performance of or compliance with this Agreement
(whether or not the registration in connection with which such expenses are
incurred ultimately becomes effective), including, without limitation, all
registration and filing fees, fees and expenses of compliance with securities or
blue sky laws (including reasonable fees and disbursements of counsel in
connection with blue sky qualifications of the Restricted Stock), printing
expenses, messenger and delivery expenses incurred by the Company, internal
expenses incurred by the Company (including without limitation, all salaries and
expenses of its officers and employees performing legal or accounting duties),
the fees and expenses incurred in connection with the listing of the securities
to be registered on each securities exchange on which similar securities issued
by the Company are then listed, NASD fees (including filing fees and reasonable
fees and disbursements of counsel in connection with compliance with NASD rules
and regulations), and fees and disbursements of counsel for the Company and its
independent certified public accountants (including the expenses of any special
audit or comfort letters required by or incident to such performance), fees and
expenses of its independent petroleum engineers, securities act liability
insurance (if the Company elects to obtain such insurance), the reasonable fees
and expenses of any special experts retained by the Company in connection with
such registration and the fees and expenses of other persons retained by the
Company in connection with such registration.

     7.  Indemnification: Contribution.

         (A) Indemnification by the Company. The Company agrees to indemnify and
hold harmless each selling Holder of Restricted Stock, its officers, directors
and agents and each person, if any, who controls such selling Holder within the
meaning of either Section 15 of the Securities Act or Section 20 of the Exchange
Act, from and against any and all losses, claims, damages, liabilities and
expenses (including reasonable cost of investigation and including reasonable
costs of counsel) (i) arising out of or based upon (1) any untrue statement or
alleged untrue statement of a material fact contained in any registration
statement or prospectus relating to the Restricted Stock or in any amendment or
supplement thereto or in any preliminary prospectus relating to the Restricted
Stock, or (2) any omission or alleged omission to state therein a material fact
required to be stated therein or necessary to make the statements therein not
misleading, except insofar as such losses, claims, damages, liabilities or
expenses arise out of, or are based upon, any such untrue statement or omission
or allegation thereof based upon information furnished in writing to the Company
by such selling Holder specifically for use in the Registration Statement or
prospectus, or (ii) arising out of or based upon any violation of any Federal or
state securities laws or rules or regulations thereunder, or any other laws or
regulations (including common law claims), committed by the Company in
connection with the performance of its obligations hereunder. The Company also
agrees to include in any underwriting agreement with any underwriters of the




                                      -6-
<PAGE>   7

Restricted Stock provisions indemnifying and providing for contribution to such
underwriters and their officers and directors and each person who controls such
underwriters on substantially the same basis as the provisions of this Section 7
indemnifying and providing for contribution to the selling Holders.

         (B) Indemnification by Holders of Restricted Stock. Each selling
Holder severally and not jointly agrees to indemnify and hold harmless the
Company, its officers, directors and agents and each person (other than a
selling Holder), if any, who controls the Company within the meaning of either
Section 15 of the Securities Act or Section 20 of the Exchange Act, from and
against any and all losses, claims, damages, liabilities and expenses (including
reasonable costs of counsel) (i) arising out of or based upon (1) any untrue
statement or alleged untrue statement of material fact contained in any
registration statement or prospectus relating to the Restricted Stock or in any
amendment or supplement thereto or in any preliminary prospectus relating to the
Restricted Stock, or (2) any omission or alleged omission to state therein a
material fact required to be stated therein or necessary to make the statements
therein not misleading, or (ii) arising out of or based upon any violation of
any Federal or state securities laws or rules or regulations thereunder
committed by such Holder in connection with the disposition of such Holder's
Restricted Stock, provided (x) that such losses, claims, damages, liabilities or
expenses arise out of or are based upon any such untrue statement or omission or
allegation thereof based upon information furnished in writing to the Company
by such selling Holder or upon such selling Holder's behalf expressly for use
therein, and (y) that no selling Holder shall be liable for any indemnification
under this Section 7 in an aggregate amount which exceeds the total net proceeds
received by such selling Holder from the offering. Each selling Holder also
agrees to include in any underwriting agreement with underwriters of the
Restricted Stock provisions indemnifying and providing for contribution to such
underwriters, their officers and directors and each person who controls such
underwriters on substantially the same basis as the provisions of this Section 7
indemnifying and providing for contribution to the Company.

         (C) Conduct of Indemnification Proceedings. If any action or proceeding
(including any governmental investigation) shall be brought or any claim shall
be asserted against any indemnified party in respect of which indemnity may be
sought from an indemnifying party, the indemnifying party shall assume the
defense thereof, including the employment of counsel reasonably satisfactory to
such indemnified party, and shall assume the payment of all expenses incurred in
connection with the defense thereof; provided, that the indemnifying party may
require such indemnified party to undertake to reimburse all such fees and
expenses if it is ultimately determined that such indemnified party is not
entitled to indemnification or advancement of expenses hereunder. Such
indemnified party shall have the right to employ separate counsel in any such
action and to participate in the defense thereof, but the fees and expenses of
such counsel shall be at the expense of such indemnified party unless (i) the
indemnifying party has agreed to pay such fees and expenses, (ii) the
indemnifying party shall have failed to promptly assume the defense of such
action, claim or proceeding and to employ counsel reasonably satisfactory to
such indemnified party, or (iii) the named parties to any such action, claim or
proceeding (including any impleaded parties) include both such indemnified party
and such indemnifying party, and such indemnified




                                      -7-

<PAGE>   8



party shall have been advised in writing by counsel that there may be one or
more legal defenses available to such indemnified party which are different from
or additional to those available to the indemnifying party (in which case, if
such indemnified party notifies the indemnifying party in writing that it elects
to employ separate counsel at the expense of the indemnifying party, the
indemnifying party shall not have the right to assume the defense of such
action, claim or proceeding on behalf of such indemnified party, it being
understood, however, that the indemnifying party shall not, in connection with
any one such action or proceeding or separate but substantially similar or
related actions or proceedings in the same jurisdiction arising out of the same
general allegations or circumstances, be liable for the reasonable fees and
expenses of more than one separate firm of attorneys (together with appropriate
local counsel, subject to the indemnifying party's approval of counsel, which
approval shall not be unreasonably withheld) at any time for such indemnified
party. The indemnifying party shall not be liable for any settlement of any such
action, claim or proceeding effected without its written consent (such consent
which will not be unreasonably withheld), but if settled with its written
consent or if there is a final judgment for the plaintiff in any such action or
proceeding, the indemnifying party agrees to indemnify and hold harmless such
indemnified party from and against all loss or liability (to the extent stated
above) by reason of such settlement or judgment.

         (D) Contribution. If the indemnification provided for in this Section 7
is unavailable to the Company or the selling Holders in respect of any losses,
claims, damages, liabilities or judgments referred to therein, then each such
indemnifying party, in lieu of indemnifying such indemnified party, shall
contribute to the amount paid or payable by such indemnified party as a result
of such losses, claims, damages, liabilities and judgments, in such proportion
as is appropriate to reflect the relative fault of each such party in connection
with such statements or omissions, as well as any other relevant equitable
considerations. The relative fault of each such party shall be determined by
reference to, among other things, whether any action in question, including any
untrue or alleged untrue statement of a material fact or omission or alleged
omission to state a material fact, has been taken or made by, or relates to
information supplied by, such indemnifying or indemnified party, and the
parties' relative intent, knowledge, access to information and opportunity to
correct or prevent such action, statement or omission.

     The Company and the selling Holders agree that it would not be just and
equitable if contribution pursuant to this Section 7(D) were determined by pro
rata allocation or by any other method of allocation which does not take
account the equitable considerations referred to in the immediately preceding
paragraph. The amount paid or payable by an indemnified party as a result of the
losses, claims, damages, liabilities or judgments referred to in the immediately
preceding paragraph shall be deemed to include, subject to the limitations set
forth above, any reasonable legal or other expenses reasonably incurred by such
indemnified party in connection with investigating or defending any such action
or claims. Notwithstanding the provisions of this Section 7(D), no selling
Holder shall be required to contribute an amount in excess of the amount by
which the total net price at which the Restricted Stock of such selling Holder
was offered to the public exceeds the amount of any damages which such selling
Holder has otherwise been required to pay by reason of such untrue or alleged
untrue statement or omission or alleged omission. No person guilty of




                                      -8-
<PAGE>   9

fraudulent misrepresentation (within the meaning of Section 11(f) of the
Securities Act) shall be entitled to contribution from any person who was not
guilty of such fraudulent misrepresentation.

     8. Amendments. This Agreement may be amended or modified upon the written
consent thereto of the Company and the Holders of a majority in number of shares
of Restricted Stock.

     9. Assignments. This Agreement shall be binding on and inure to the
benefit of the respective successors and assigns of the parties hereto. Without
the written consent of the Company, a Holder may not assign any rights hereunder
except to a transferee of such Holder of Restricted Stock aggregating 10% or
more of the Restricted Stock then outstanding, provided that the foregoing will
not prevent any successor by merger, consolidation or transfer of substantially
all the assets of such Holder from succeeding to a Holder's rights hereunder.

     10. GOVERNING LAW. THIS AGREEMENT AND THE RIGHTS AND OBLIGATIONS OF THE
PARTIES HEREUNDER SHALL BE GOVERNED BY THE LAWS OF THE STATE OF TEXAS, WITHOUT
GIVING EFFECT TO THE PRINCIPLES THEREOF RELATING TO CONFLICTS OF LAW.

     11. Notices. Any notice, request, instruction, correspondence or other
documents to be given hereunder by any party to the other (herein collectively
called "Notice") shall be in writing and delivered personally or mailed, postage
prepaid, or by telecopier, if to a Holder, to the address specified for such
person on the signature pages hereof (or such other address as a Holder may
subsequently provide to the Company in writing), and if to the Company, to 767
Fifth Avenue, 46th Floor, New York, New York 10583, Attention: General Counsel,
Telecopier No.: (212)644-2230. Notice given by personal delivery or mail shall 
be effective upon actual receipt. Notice given by telecopier shall be effective
upon actual receipt if received during the recipient's normal business hours, or
at the beginning of the recipient's next business day after receipt if not
received during the recipient's normal business hours. Any party may change any
address to which Notice is to be given to it by giving Notice as provided above
of such change of address.

     12. Severability. In case any provision in or obligation under this
Agreement shall be invalid, illegal or unenforceable in any jurisdiction, the
validity, legality and enforceability of the remaining provisions or
obligations, or of such provision or obligation in any other jurisdiction, shall
not in any way be affected or impaired thereby.

     13. Arbitration. Any and all claims, demands, causes of action, disputes,
controversies and other matters in question arising out of or relating to this
Agreement, the alleged breach thereof, or in any way relating to the subject
matter of this Agreement ("Claims"), even though some or all of such Claims
allegedly are extra contractual in nature, whether such Claims sound in
contract, tort or otherwise, at law or in equity, under state or federal law,
whether provided by statute or the common law, for damages or any other relief,
shall be resolved and decided exclusively by binding arbitration pursuant to the
Federal Arbitration Act in accordance with the Commercial Arbitration Rules then
in effect with the American Arbitration Association. The arbitration proceeding
shall be





                                      -9-
<PAGE>   10

conducted in Houston, Texas. The arbitration shall be before a panel of three
arbitrators. Each party to such dispute shall select one arbitrator, and the two
arbitrators selected by the parties shall select the third arbitrator. The
arbitrators are authorized to issue subpoenas for depositions and other
discovery mechanisms, as well as trial subpoenas, in accordance with the Federal
Rules of Civil Procedure. Either party may initiate a proceeding in the
appropriate United States District Court to enforce this provision. This
agreement to arbitrate shall be enforceable in either federal or state court.
Judgment upon any award rendered in any such arbitration proceeding may be
entered by any federal or state court having jurisdiction. The enforcement of
this agreement to arbitrate and all procedural aspects of this agreement to
arbitrate, including the construction and interpretation of this agreement to
arbitrate, the scope of the arbitrable issues, allegations of waiver, delay or
defenses to arbitrability, and the rules of governing the conduct of the
arbitration, shall be governed by and construed pursuant to the Federal
Arbitration Act. The arbitrators shall have no authority to award punitive
(including, without limitation, any exemplary damages, treble damages or any
other penalty or punitive type of damages, consequential, incidental or indirect
damages (in tort, contract or otherwise) under any circumstances, the parties
hereby waiving their right, if any, to recover such damages in connection with
any Claims. The arbitrators shall be entitled to award costs of the arbitration
and attorney's fees as they deem appropriate. Prior to any party instituting a
Claim under this Agreement, such party shall provide to the other party hereto a
written notice specifying the nature and basis of the Claim. The party that is
the subject of any Claim shall be given thirty (30) days to cure any breach
before any Claim is filed. It is further agreed that prior to such Claims being
submitted to the arbitrators on such Claims, the parties to the Claims shall
attempt to resolve such Claims through non-binding mediation of such Claims for
a period of not in excess of 30 days commencing after assertion of a Claim.

     14. Entire Agreement. This Agreement is intended by the parties as a final
expression of their agreement and a complete and exclusive statement of the
agreement and understanding of the parties hereto in respect of the subject
matter contained herein. There are no restrictions, promises, warranties or
undertakings, other than those set forth or referred to herein. This Agreement
supersedes all prior agreements and understandings between the parties with
respect to such subject matter.

     15. Attorneys' Fees. In any action or proceeding brought to enforce any
provision of this Agreement, or where any provision hereof is validly asserted
as a defense, the prevailing party, as determined by arbitration or by the
court, as the case may be, shall be entitled to recover reasonable attorneys'
fees in addition to its costs and expenses and any other available remedy.





                                      -10-
<PAGE>   11

     IN WITNESS WHEREOF, the Company and the Shareholder have caused this
Agreement to be signed by their respective officers or agents thereunto duly
authorized.

                              BELCO OIL & GAS CORP.                         
                                                                            
                              By:  /s/ ROBERT A. BELFER              
                                 ----------------------------------------   
                              Name:                                         
                              Title:                                        
                              Telecopy No.:                                 
                                                                            
                              SHAREHOLDER:                                  
                                                                            
                              JOINT ENERGY DEVELOPMENT INVESTMENTS          
                              LIMITED PARTNERSHIP                           
                                                                            
                              By:  Enron Capital Management Limited         
                                   Partnership, its General Partner         
                                                                            
                              By:  Enron Capital Corp., its General Partner 
                                                                            
                              By: /s/ TIMOTHY J. DETMERING                  
                                 ----------------------------------------   
                              Name:    Timothy J. Detmering                 
                              Title:   Agent and Attorney-in-Fact           
                              Address: c/o Enron Corp.                      
                                       1400 Smith Street                    
                                       Houston, TX 77002                    
                                       Attn: Donna W. Lowry                 
                              Telecopy No.:  (713) 646-4039                  
                              Telephone No.: (713) 853-1939                 
                                                                            
                              With a copy to:                               
                              Tim Detmering                                 
                              Lance Schuler                                
                              1400 Smith Street                             
                              Houston, TX 77002                             
                              Telecopy No.: (713) 646-3750 (Detmering)      
                                            (713) 646-3393 (Schuler)        



                                      -11-

<PAGE>   1


                                                                      Exhibit 3

                             JOINT FILING AGREEMENT

     The undersigned each agree that (i) the Statement on Schedule 13D relating
to the Common Stock, $.01 par value, of Belco Oil & Gas Corp. is adopted and
filed on behalf on each of them, (ii) all future amendments to such Statement
on Schedule 13D will, unless written notice to the contrary is delivered as
described below, be jointly filed on behalf of each of them, and (iii) the
provisions of Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as
amended, apply to each of them. This agreement may be terminated with respect
to the obligation to jointly file future amendments to such Statement on
Schedule 13D as to any of the undersigned upon such person giving written
notice thereof to each of the other persons signatory hereto, at the principal
office thereof.

     EXECUTED as of October 7, 1998.

                                    ENRON CORP.


                                    By: /s/ Peggy B. Menchaca
                                       ---------------------------------
                                    Name:  Peggy B. Menchaca
                                    Title:  Vice President and Secretary


                                    JOINT ENERGY DEVELOPMENT
                                    INVESTMENTS LIMITED PARTNERSHIP

                                    By: Enron Capital Management
                                        Limited Partnership, its general partner

                                    By: Enron Capital Corp., its general partner

                                    By: /s/ Peggy B. Menchaca
                                       ---------------------------------
                                    Name:  Peggy B. Menchaca
                                    Title:  Vice President and Secretary






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