COMDISCO INC
SC 13D, 1995-09-21
COMPUTER RENTAL & LEASING
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                                UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                  SCHEDULE 13D
                   Under the Securities Exchange Act of 1934


                           Hugoton Energy Corporation
--------------------------------------------------------------------------------
                                (Name of Issuer)

                         Common Stock without par value
--------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                    444-613
-------------------------------------------------------------------------------
                                 (CUSIP Number)


                            Thomas R. Denison, Esq.
                            GIBSON, DUNN & CRUTCHER
                       1801 California Street, Suite 4200
                             Denver, Colorado 80202
                                 (303) 298-5700
--------------------------------------------------------------------------------
            (Name, Address and Telephone Number of Person Authorized
                     to Receive Notices and Communications)

                               September 7, 1995
--------------------------------------------------------------------------------
            (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 Statement because of Rule 13d-1(b)
(3) or (4), check the following box [ ]

Check the following box if a fee is being paid with the statement [X]





                                  Page 1 of 19
<PAGE>
------------------
Cusip No.  444-613


(1)       NAMES OF REPORTING PERSON
          S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

          First Reserve Secured Energy Assets Fund, Limited Partnership
          I.R.S. Identification No. 06-1232433

(2)       Check the appropriate Box                              (a)
          if a Member of a Group*                                (b)X

(3)       SEC Use Only

(4)       Source of Funds*

          00

(5)       Check if Disclosure of Legal Proceedings is Required to
          Items 2(d) or 2(e)                                                 [ ]
                                                                           
(6)       Citizenship or Place of Organization

          Delaware

NUMBER OF         (7)       Sole Voting Power
SHARES                      0
BENEFICIALLY
OWNED BY          (8)       Shared Voting Power
EACH                        1,833,956
REPORTING
PERSON            (9)       Sole Dispositive Power
WITH                        0


                  (10)      Shared Dispositive Power
                            1,833,956

(11)      Aggregate Amount Beneficially Owned by Each Reporting Person

          1,833,956

(12)      Check box if the Aggregate Amount in Row (11)
          Excludes Certain Shares*                                           [ ]
                                                                            
(13)      Percent of Class Represented
          by Amount in Row (11)

          9.3%

(14)      Type of Reporting Person*

          PN


<PAGE>
Cusip No.  444-613


(1)       NAMES OF REPORTING PERSON
          S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

          First Reserve Fund V, Limited Partnership.
          I.R.S. Identification No.:   06-1295657

(2)       Check the appropriate Box                                       (a)
          if a Member of a Group*                                         (b)X

(3)       SEC Use Only

(4)       Source of Funds*

          00

(5)       Check if Disclosure of Legal Proceedings is Required to
          Items 2(d) or 2(e)                                                 [ ]
                                                                            
(6)       Citizenship or Place of Organization

          Delaware

NUMBER OF      (7)       Sole Voting Power
SHARES                   0
BENEFICIALLY
OWNED BY       (8)       Shared Voting Power
EACH                     2,138,802
REPORTING
PERSON         (9)       Sole Dispositive Power
WITH                     0

               (10)      Shared Dispositve Power
                         2,138,802

(11)      Aggregate Amount Beneficially
          Owned by Each Reporting Person

          2,138,802

(12)      Check box if the Aggregate Amount
          in Row (11) Excludes Certain Shares*                               [ ]


(13)      Percent of Class Represented by Amount in Row (11)

          10.9%

(14)      Type of Reporting Person*

          PN

<PAGE>

Cusip 444-613

(1)       Names of Reporting Person S.S.
          or I.R.S. Identification No. of Above Persons

          Comdisco, Inc.
          36-2687938

(2)       Check the appropriate Box                              (a)
          if a Member of a Group*                                (b)

(3)       SEC Use Only

(4)       Source of Funds*

          00,WC

(5)       Check if Disclosure of Legal Proceedings is Required to
          Items 2(d) or 2(e)                                                 [ ]

(6)       Citizenship or Place of Organization

          Delaware

NUMBER OF      (7)       Sole Voting Power
SHARES                   3,683,320
BENEFICIALLY
OWNED BY       (8)       Shared Voting Power
EACH                     0
REPORTING
PERSON         (9)       Sole Dispositive Power
WITH                     3,683,320

               (10)      Shared Dispositive Power
                         0

(11)      Aggregate Amount Beneficially Owned by Each Reporting Person

          3,683,320

(12)      Check box if the Aggregate Amount
          in Row (11) Excludes Certain Shares*                               [ ]
                                                                            
(13)      Percent of Class Represented by Amount in Row (11)

          18.6%

(14)      Type of Reporting Person*

          CO


<PAGE>
Cusip No.   089324 20 6

1)       Names of Reporting Person
         S.S. or I.R.S. Identification No. of Above Persons

         First Reserve Corporation
         I.R.S. No.:  06-1210123

(2)       Check the appropriate Box                              (a)
          if a Member of a Group*                                (b)X

(3)       SEC Use Only

(4)       Source of Funds*

          00

(5)       Check if Disclosure of Legal Proceedings is Required to
          Items 2(d) or 2(e)                                                 [ ]
                                                                            
(6)       Citizenship or Place of Organization

          Delaware


NUMBER OF         (7)       Sole Voting Power
SHARES                      0
BENEFICIALLY
OWNED BY          (8)       Shared Voting Power
EACH                        5,226,936
REPORTING
WITH              (9)       Sole Dispositive Power
                            0

                  (10)      Shared Dispositive Power
                            5,226,936

(11)      Aggregate Amount Beneficially Owned by Each Reporting Person

          5,226,936

(12)      Check box if the Aggregate Amount
          in Row (11) Excludes Certain Shares*                               [ ]
                                                                            

(13)      Percent of Class Represented by Amount in Row (11)

          26.5%

(14)      Type of Reporting Person*

          CO


<PAGE>


         ITEM 1.           SECURITY AND ISSUER
                           This statement on Schedule 13D (this  "Schedule 13D")
         relates to shares of the common stock,  no par value of Hugoton  Energy
         Corporation,  a  Kansas  corporation  (the  "Company").  The  principal
         executive  offices of the  Company  are  located at 301 N. Main,  Suite
         1900, Wichita, Kansas 67202. The Company's telephone number is
         (316) 262-1522.

         ITEM 2.           IDENTITY AND BACKGROUND
                           This  statement  is  being  filed  by  First  Reserve
         Secured  Energy  Assets  Fund,  Limited  Partnership  ("FRSEA"),  First
         Reserve  Fund  V,  Limited   Partnership   ("Fund  V"),  First  Reserve
         Corporation   ("First   Reserve")  and  Comdisco,   Inc.   ("Comdisco")
         (collectively referred to herein as the "Reporting Parties"). FRSEA and
         Fund V are both Delaware limited partnerships.  Their principal purpose
         is to make equity and debt investments in companies  engaged in various
         energy production, processing, transmission,  distribution,  marketing,
         equipment manufacturing, electrical generation, and technical services,
         and in energy  assets such as oil and gas  reserves or  processing  and
         transmission  facilities.  Their  principal  offices are located at 475
         Steamboat  Road,  Greenwich,  CT 06830.  First  Reserve  is a  Delaware
         corporation  which  raises  funds for and manages  FRSEA and Fund V (as
         well as several  other similar  entities).  First  Reserve's  principal
         business  is to  act  as  the  managing  general  partner  and  provide
         investment  management  services  to a  limited  number  of  investment
         partnerships,  including FRSEA and Fund V. First Reserve's  offices are
         also located at 475  Steamboat  Road,  Greenwich,  CT 06830.  Comdisco,
         Inc., a Delaware corporation whose principal business is computer sales
         and leasing, has its principal office located at 6111 North River Road,
         Rosemont,  IL 60018. The information required by Item 2 with respect to
         the executive officers and directors of the Reporting Parties which are
         corporations is found in Schedule I, attached hereto.
                           First  Reserve  Hill  Partners  Limited,  a  Delaware
         corporation  ("Hill")  and First  Reserve  Hill  Partners V Limited,  a
         Delaware  corporation  ("Hill V") are the special  general  partners of
         FRSEA and Fund V, respectively. The principal business of Hill and Hill
         V is to act as special general  partner of the investment  partnerships
         FRSEA and Fund V. The principal  offices of Hill and Hill V are located
         at 475 Steamboat Road, Greenwich, CT 06830. The information required by
         Item  2  with  respect  to  the  executive   officers,   directors  and
         controlling  persons  of Hill  and  Hill V is  found  in  Schedule  II,
         attached hereto.
                           None of the  Reporting  Parties,  Hill or Hill V has,
         during the last five years,  been  convicted in a criminal  proceeding.
         Nor has any of the Reporting  Parties,  Hill or Hill V, during the last
         five  years,  been a  party  to a  civil  proceeding  or  subject  to a
         judgment,  decree or final order  enjoining  future  violations  of, or
         prohibiting  or  mandating  activities  subject  to,  federal  or state
         securities laws or finding any violation with respect to such laws.

         ITEM 3.           SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION
                           The  Reporting  Parties  were  beneficial  owners  of
         stock, either directly or indirectly,  of Consolidated Oil & Gas, Inc.,
         a Delaware corporation  ("COG").  They acquired beneficial ownership of
         the common  stock of the  Company  through a merger of the  Company and
         COG.  Pursuant to the  Agreement and Plan of Merger dated May 26, 1995,
         as amended,  entered  into  between  the Company and COG  ("Agreement")
         (attached  hereto as  Exhibit  B),  each share of COG stock held by the
         Reporting  Parties was  exchanged  for .7916  shares of Company  Common
         Stock and  $3.0273  in cash.  The  source  of funds  for the  shares of
         Company Common Stock acquired by the Reporting Parties is therefore the
         Reporting  Parties'  respective  holdings  of COG stock.  In  addition,
         Comdisco has acquired a total of 47,000 shares of Company  Common Stock
         through market transactions using its own working capital.

                           Item 3 is  inapplicable  to  Hill,  Hill V and  their
         respective executive officers, directors and controlling persons.



<PAGE>

         ITEM 4.           PURPOSE OF TRANSACTION
                           The purpose of the  transaction is for the Company to
         acquire  control  of COG  through  a  merger  of COG  with and into the
         Company. Pursuant to the Agreement, each outstanding share of COG stock
         was converted into the right to receive 0.7916 shares of Company Common
         Stock,  plus  $3.0273  in  cash.  As  a  result  of  the  Merger,   COG
         shareholders,  in the  aggregate,  received  $34,765,840  in  cash  and
         9,090,736 shares of Company Common Stock (or approximately 46.2% of the
         19,697,000 shares currently outstanding).
                           Also,  as a  result  of  the  Merger,  the  Board  of
         Directors of the Company  consists of nine members,  three of which are
         Class I  members,  serving a three year term  ending in 1998;  three of
         which are Class II members,  with a term  ending in 1997;  and three of
         which are Class III members  with a term ending in 1996.  Pursuant to a
         shareholder's  agreement (attached hereto as Exhibit E and described in
         Item 6), the Board of Directors was elected in the following manner:
(a)      One Class II member designated by FRSEA;
(b)      One Class II member designated by Fund V;
(c)      One Class III member designated by First Reserve Corporation, provided
         that such member be J.W.
         Decker so long as he is an executive officer of the Corporation;
(d)      One Class I member designated by Comdisco, Inc;
(e)      Two Class III members designated by Floyd C. Wilson;
(f)      One Class II member designated by Odyssey Partners, L.P.; and
(g)      Two class I members designated by a vote of a majority of the
         shareholders of the Corporation.
         The initial directors elected pursuant to this subparagraph were
         John. T. McNabb, II and David Elkouri.


         ITEM 5.           INTEREST IN SECURITIES OF ISSUER
                           (a) The Reporting  Parties are the beneficial  owners
         of Company Common Stock in the numbers and percentages set forth in the
         table below. The executive officers and directors of Comdisco and First
         Reserve may be deemed  beneficial owners of the shares held by Comdisco
         and First Reserve,  respectively.  However, (i) such executive officers
         and  directors  disclaim  such  beneficial  ownership,  and  (ii)  such
         executive  officers and  directors  are  beneficial  owners of no other
         shares.  Neither Hill nor any of its executive  officers,  directors or
         controlling persons is beneficial owner of any Company Common Stock.
<TABLE>
<CAPTION>

                                                        Number of Shares         Percentage of Class
                Reporting Party <F1>                  Beneficially Owned           of Security Owned
                --------------------------            ------------------         -------------------
                <S>                                     <C>                            <C>

                FRSEA ....................              1,833,956                       9.3%
                Fund V ...................              2,138,802                      10.9%
                Comdisco, Inc <F2> .......              3,683,320                      18.6%
                First Reserve Corporation.<F3>          5,226,936                      26.5%

<FN>

  <F1>   The Reporting  Parties are making this single,  joint filing because
         they may be deemed  to  constitute  a "group"  within  the  meaning  of
         Section  13(d)(3) of the  Securities  Exchange Act of 1934, as amended,
         although neither the fact of this filing nor anything  contained herein
         shall be deemed to be an  admission  by the  Reporting  Parties  that a
         group exists or that First Reserve Corporation beneficially owns any of
         the shares of Company Common Stock owned by the  partnerships  which it
         manages.
  <F2>   Comdisco, Inc. is making this single, joint filing with the
         other  Reporting  Persons for  administrative  convenience and does not
         constitute  an  admission  that it is it is a part of any  "group"  (as
         defined above) with any other Reporting Party.


                                 Page 7 of 19


<PAGE>



 <F3>    First Reserve  Corporation  is the managing  general  partner of FRSEA,
         Fund V,  and  other  entities,  which  collectively  own  26.5%  of the
         outstanding shares of Company Common Stock.
</FN>
</TABLE>


                           (b) FRSEA and Fund V both  share the power to vote or
         to direct the vote and the power to  dispose or direct the  disposition
         of all Shares held by them with their  managing  general  partner First
         Reserve.  Comdisco,  Inc.  has the sole  power to vote or to direct the
         vote and sole power to dispose or direct the  disposition of all Shares
         held by it.  The  Reporting  Parties  have the  following  powers  with
         respect to the Company Common Stock they beneficially own. Item 5(b) is
         inapplicable to Hill and Hill V and their executive officers, directors
         and controlling persons.
<TABLE>
<CAPTION>

                                             Sole Voting     Shared Voting   Sole Dispositive   Shared Dispositive
              Reporting Party                      Power             Power              Power                Power
              ------------------------       -----------     -------------   ----------------   ------------------
              <S>                              <C>               <C>               <C>                   <C>

              FRSEA ...................                0         1,833,956                  0            1,833,956
              Fund V ..................                0         2,138,802                  0            2,138,802
              Comdisco, Inc ...........        3,683,320                 0          3,683,320                    0
              First Reserve Corporation                0         5,226,936<F1>              0            5,226,936


<FN>

             <F1>  Includes ownership of FRSEA and Fund V.
</FN>
</TABLE>

                           (c)  Comdisco  purchased  41,500  shares  of  Company
         Common Stock in the open market with a settlement  date in August 1995,
         12,500  shares with a settlement  date of September 8, 1995,  and 3,000
         shares  with a  settlement  date  of  September  13,  1995.  Except  as
         disclosed above,  within the knowledge of the Reporting  Parties,  Hill
         and Hill V, no  transactions  in  Shares  other  than the  Merger  were
         effected  during the past 60 days by such persons,  or, with respect to
         Comdisco,  First  Reserve,  Hill and Hill V,  the  executive  officers,
         directors and controlling persons (if any) of such persons.
                           (d) First Reserve Corporation is the managing general
         partner  of FRSEA  and Fund V. In this  position,  it has the  power to
         direct the receipt of dividends  from,  or the proceeds of sale of, any
         securities beneficially owned by the Reporting Parties. No other person
         is known to have  the  right to  receive  or the  power to  direct  the
         receipt of dividends  from, or the proceeds of sale of, any  securities
         beneficially owned by the Reporting Parties.
                           (e)      Not applicable.

         ITEM 6.           CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS

         a.       Shareholders Agreement to Approve Merger
                           At the time the Agreement  was entered into,  holders
         of  6,235,134  shares of the Company  (approximately  59% of the shares
         entitled to vote) entered into a Shareholders  Agreement  ("Shareholder
         Agreement")  with  COG  (attached  hereto  as  Exhibit  D).  Under  the
         Shareholder Agreement, these shareholders pledged to support the Merger
         and to vote all of the  shares of  Company  Common  Stock  under  their
         control in favor of the Agreement,  unless the Agreement was terminated
         thereafter in accordance with its terms.

         b.       Registration Rights Agreement and Future Sales Rights
                           Pursuant to the  Agreement,  the Company has promised
         to file a  registration  statement  with the  Securities  and  Exchange
         Commission (the "Commission") as soon as practicable for the purpose of
         registering the shares issued in the Merger under the Securities Act of
         1933. The Company also promised to use all  reasonable  efforts to have
         the registration  statement declared  effective by the Commission.  The
         Company  will file the  registration  statement  on Form  S-3,  and the
         Agreement provides that the company shall maintain such registration


                                 Page 8 of 19
<PAGE>

         statement  in effect for two years.  The  registration  statement  will
         cover the offer and sale from time to time by the  former  stockholders
         of COG of the  shares  of  Company  Common  Stock to be  issued to such
         holders pursuant to the Merger.  However, no COG stockholder  receiving
         such shares shall, pursuant to such registration,  sell more than 1% of
         the  total  amount of  Company  Common  Stock  outstanding  during  any
         calendar quarter.
                           Further, the Company,  certain existing  shareholders
         of the Company,  and the COG  shareholders  entered into a Registration
         Rights Agreement (attached hereto as Exhibit F). The Company must offer
         the parties to the  Registration  Rights  Agreement the  opportunity to
         include  their shares in any  registered  offering  made by the Company
         subject to certain limitations.  In addition,  some shareholders of the
         Company, including the Reporting Parties, have the right to require the
         Company to use its best efforts to cause the  registration  and sale in
         an  underwritten  public  offering of all or a portion of their  shares
         (but not less than 200,000 shares).

         c.   Shareholder Agreement
                           The Company,  the Reporting Parties (except for First
         Reserve)  and other  Shareholders  of the Company  have entered into an
         Agreement of  Shareholders,  dated as of  September  7, 1995  (attached
         hereto as Exhibit  E),  pursuant  to which the  parties  have agreed to
         cause the Board of Directors of the Company to be elected in the manner
         set forth in Item 4. A party  who has  rights  to  appoint  a  director
         pursuant to the Agreement of  Shareholders  will lose such right in the
         event such party's  ownership  of Company  Common Stock falls below 5%;
         provided,  however,  that the Board shall be reduced in number so as to
         eliminate  the  position  to which such party was  allowed to appoint a
         director.

         ITEM 7. EXHIBITS

         Exhibit A         Agreement  Concerning  Filing of Schedule  13D.
         Exhibit B         Agreement  and Plan of Merger, dated May 26, 1995,
                           among the Company and COG,  as amended  (included  as
                           Appendix  A to the Proxy  Statement  incorporated  by
                           reference herein as Exhibit G).
         Exhibit C         Option to  Purchase  COG Common  Stock given to the
                           Company by COG shareholders.
         Exhibit D         Shareholder  Agreement between COG and shareholders
                           of the Company  pledging  support of shareholders for
                           Merger.
         Exhibit E         Agreement of  Shareholders  between the Company and
                           shareholders of COG.
         Exhibit F         Registration  Rights Agreement  between the Company
                           and the shareholders of COG.
         Exhibit G         Proxy Statement for Special Meeting of Stockholders,
                           held September 7, 1995 (File No. 0-23166).



                                 Page 9 of 19


<PAGE>


                              INTENTIONALLY BLANK

                                 Page 10 of 19


<PAGE>






                                   Schedule I
                                  -----------
                           1. The name, business address,  and present principal
         occupation  or  employment  of  each  of  the  executive  officers  and
         directors of First  Reserve  Corporation  are set forth  below.  Unless
         otherwise indicated,  (i) the business address of each is 475 Steamboat
         Road, Greenwich,  Connecticut 06830; (ii) each such person is a citizen
         of the  United  States;  (iii)  such  person  does not  have any  other
         principal  occupation;  (iv) in the last  five  years,  none  have been
         convicted in a criminal proceeding  (excluding traffic  violations,  or
         similar misdemeanors); and (v) in the last five years, none have been a
         party to a civil  proceeding  of a judicial or  administrative  body of
         competent jurisdiction resulting in (y) such person becoming subject to
         a judgment,  decree or final order enjoining  future  violations of, or
         prohibiting  or  mandating  activities  subject  to  federal  or  state
         securities  laws or (z) a finding of any violation with respect to such
         laws.
                           Name and Position with
                           First Reserve Corporation
                           -------------------------

                           William E. Macaulay
                           President and Chief Executive
                           Officer, Managing Director and Director

                           John A. Hill
                           Chairman, Managing Director and Director

                           David H. Kennedy
                           Managing Director and Director

                           Elizabeth Foley
                           Managing Director, Treasurer
                                    and Secretary

                           Cathleen M. Ellsworth
                           Vice President

                           Bruce M. Rothstein
                           Vice President

                                 Page 11 of 19


<PAGE>







                               Schedule I (Cont.)
                               ------------------

          2. The name,  business address,  and present  principal  occupation or
          employment  of  each  of  the  executive  officers  and  directors  of
          Comdisco,  Inc. are set forth below. Unless otherwise  indicated,  (i)
          the business address of each is 6111 N. River Road, Rosemont, Illinois
          60018; (ii) each such person is a citizen of the United States;  (iii)
          such person does not have any other principal occupation;  (iv) in the
          last five years,  none have been  convicted  in a criminal  proceeding
          (excluding traffic violations,  or similar  misdemeanors);  and (v) in
          the last five years, none have been a party to a civil proceeding of a
          judicial or administrative body of competent jurisdiction resulting in
          (y) such person becoming subject to a judgment,  decree or final order
          enjoining future violations of, or prohibiting or mandating activities
          subject to federal  or state  securities  laws or (z) a finding of any
          violation with respect to such laws.


                             Name and Position with
                                 Comdisco, Inc.
                              -------------------
             Alan J. Andreini          Executive Vice President
             Robert A. Bardagy         Executive Vice President
             Philip A. Hewes           Senior Vice President/Legal
             Nicholas K. Pontikes      Executive Vice President
             John J. Vosicky           Executive Vice President, CFO & Treasurer
             William N. Pontikes       Executive Vice President
             Jack Slevin               President and Chief Executive Officer
             David J. Keenan           Vice President & Controller
             John C. Kenning           Senior Vice President


                                 Page 12 of 19


<PAGE>





                                  Schedule II
                                  -----------
                           The name,  business  address,  and present  principal
         occupation or employment of each of the executive  officers,  directors
         and  controlling  persons of First  Reserve Hill  Partners  Limited and
         First  Reserve  Hill  Partners V Limited  are set forth  below.  Unless
         otherwise indicated,  (i) the business address of each is 475 Steamboat
         Road, Greenwich,  Connecticut 06830; (ii) each such person is a citizen
         of the  United  States;  (iii)  such  person  does not  have any  other
         principal  occupation;  (iv) in the last  five  years,  none  have been
         convicted in a criminal proceeding  (excluding traffic  violations,  or
         similar misdemeanors); and (v) in the last five years, none have been a
         party to a civil  proceeding  of a judicial or  administrative  body of
         competent jurisdiction resulting in (y) such person becoming subject to
         a judgment,  decree or final order enjoining  future  violations of, or
         prohibiting  or  mandating  activities  subject  to  federal  or  state
         securities  laws or (z) a finding of any violation with respect to such
         laws.
                           Name and Position with
                           First Reserve Hill Partners Limited
                           -----------------------------------

                           John A. Hill
                           Director, Vice President

                           David H. Kennedy
                           Director, Treasurer

                           William E. Macaulay
                           Director, President



                           Name and Position with
                           First Reserve Hill Partners V Limited
                           -------------------------------------

                           John A. Hill
                           Director, President

                           David H. Kennedy
                           Director, Vice President

                           Elizabeth Foley
                           Director, Secretary

                           William E. Macaulay
                           Director


                                 Page 13 of 19


<PAGE>





                                   EXHIBIT A
                                   ---------
                  Agreement Concerning Filing of Schedule 13D

                    First Reserve  Secured Energy Assets
          Fund, Limited Partnership,  a Delaware limited partnership  ("FRSEA"),
          First  Reserve  Fund  V,  Limited  Partnership,   a  Delaware  limited
          partnership  ("Fund  V"),  First  Reserve   Corporation,   a  Delaware
          corporation  ("First  Reserve"),   and  Comdisco,   Inc.,  a  Delaware
          corporation ("Comdisco"),  pursuant to Rule 13d-1(f) promulgated under
          the Securities  Exchange Act of 1934, as amended,  hereby agree to the
          joint  filing  with the other  Reporting  Parties on behalf of each of
          them of a statement on Schedule  13D with  respect to a Common  Stock,
          without  par  value,  of  Hugoton  Energy  Corporation  and that  this
          agreement be included as an exhibit to such joint filing.
                    FRSEA,  Fund  V,  First  Reserve,  and  Comdisco  separately
          acknowledge  that they are each  responsible  for the timely filing of
          such statement and any amendments  thereto,  and for the  completeness
          and accuracy of the information  concerning them contained therein. No
          party  to  this  Agreement  is  responsible  for the  completeness  or
          accuracy of the information concerning the other parties,  unless such
          party  knows  or has  reason  to  believe  that  such  information  is
          inaccurate.
                    This agreement may be executed in any number of counterparts
          all of  which  taken  together  shall  constitute  one  and  the  same
          instrument.

                    Dated as of the 7th day of September, 1995.


                             First Reserve Secured Energy Assets Fund,
                             Limited Partnership, a Delaware limited partnership
                             By:      First Reserve Corporation, a Delaware
                                      corporation, as managing general partner

                             Name:  /S/  William E. Macaulay
                             Title: President

                             First Reserve Fund V, Limited Partnership,
                             a Delaware limited partnership
                             By:      First Reserve Corporation, as
                                      managing general partner

                             Name:  /S/  William E. Macaulay
                             Title: President

                             First Reserve Corporation, a Delaware corporation
                             Name:  /S/   William E. Macaulay
                             Title: President

                                 Page 14 of 19


<PAGE>



                            Comdisco, Inc., a Delaware corporation
                            Name:  /S/   Alan J. Andreini
                            Title: Executive Vice President

                                 Page 15 of 19


<PAGE>

EXHIBIT C   OPTION TO PURCHASE COG COMMON STOCK

                                                                  EXECUTION COPY

         THE TRANSFER OF THIS OPTION IS SUBJECT TO CERTAIN RESTRICTIONS

            OPTION TO PURCHASE CLASS A COMMON STOCK AND COMMON STOCK
                                       OF
                          CONSOLIDATED OIL & GAS, INC.


NEITHER  THIS  OPTION NOR THE OPTION  SHARES OF CLASS A COMMON  STOCK AND COMMON
STOCK SUBJECT  HERETO HAVE BEEN  REGISTERED  UNDER THE SECURITIES ACT OF 1933 OR
ANY  APPLICABLE  STATE  SECURITIES  LAW AND MAY NOT BE SOLD,  OFFERED  FOR SALE,
PLEDGED,  HYPOTHECATED OR OTHERWISE TRANSFERRED IN THE ABSENCE OF A REGISTRATION
STATEMENT IN EFFECT WITH RESPECT TO SUCH SECURITIES UNDER SUCH ACT OR LAWS OR AN
OPINION OF COUNSEL FOR THE HOLDER OF THIS OPTION,  OR THE OPTION SHARES  SUBJECT
HERETO, REASONABLY SATISFACTORY TO THE COMPANY STATING THAT SUCH SALE, OFFER FOR
SALE, PLEDGE,  HYPOTHECATION,  OR OTHER TRANSFER IS EXEMPT FROM THE REGISTRATION
AND  PROSPECTUS  DELIVERY  REQUIREMENTS  OF SUCH ACT AND  LAWS;  OR THE  COMPANY
OTHERWISE SATISFIES ITSELF THAT SUCH TRANSACTION IS EXEMPT FROM REGISTRATION.

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


This certifies  that, for value received,  Hugoton  Exploration  Corporation,  a
Kansas  corporation  ("Holder"),  is  entitled,  subject  to the terms set forth
herein,  to purchase all of the shares of Class A Common Stock,  par value $.01,
and common stock,  par value $.01, of  Consolidated  Oil & Gas, Inc., a Delaware
corporation (the "Company") held by the undersigned  shareholders of the Company
(the "Company Shareholders") (together, the "Option Shares").

                  1. Option Payment.  In consideration of a promissory note from
Holder in the face amount of Three Million Dollars ($3,000,000) bearing interest
at 10% per annum from and after the Exercise Date (defined below) and payable on
demand after the Exercise  Date (the "Option  Payment"),  secured by a letter of
credit on terms  reasonably  acceptable  to the  Company  Shareholders,  paid by
Holder to the Company  Shareholders  in proportion to their  ownership of Option
Shares, receipt of which is hereby acknowledged by the Company Shareholders, the
Company Shareholders grant this Option to Holder.

                  2.       Term.  This Option and Holder's rights pursuant
hereto  shall  expire  on the  earlier  of (i) 45 days  after  the  Registration
Statement  is cleared by the SEC , and (ii)  November  30,  1995 (the  "Exercise
Date").

                  3.  Notice of  Exercise.  If Holder  chooses to  exercise  its
rights hereunder,  Holder shall deliver to the Company Shareholders a "Notice of
Exercise."  The  Notice of  Exercise  shall be  written,  shall  state  Holder's
intention  to  exercise  its rights  hereunder,  and shall be  delivered  to the
Company  Shareholders  at the addresses  given in the Merger  Agreement (as such
term is defined below) no later than 10 days prior to the Exercise Date.

                  4.       Exercise and Strike Price.  If the Company
Shareholders  receive  the  Notice of  Exercise  as  provided  in Section 3, the
following provisions shall take effect:

                           (i)      For each Option Share held by the Company
Shareholders,  Holder (or an affiliate thereof) shall pay an amount equal to (A)
0.7916  shares of the common  stock of Holder,  without  par value  (subject  to
adjustment pursuant to subsection (iv) below,  "Holder Common Stock"),  plus (B)
cash in the amount of $3.0477  (collectively,  with the Holder Common Stock, the
"Strike  Price").  The  Option  Shares  shall be  conveyed  to  Holder  by sale,
assignment,  transfer and  conveyance of the Option  Shares  pursuant to a stock
purchase  agreement (the "Purchase  Agreement")  containing terms  substantially
similar to those in the Agreement  and Plan of Merger (the "Merger  Agreement"),
by and among Holder, said wholly owned subsidiary, and Company, executed of even
date herewith, unless the Company Shareholders elect pursuant to subsection (ii)
to consummate the Merger (as that term is defined in the Merger Agreement).

                           (ii)     Following receipt of the Notice of Exercise
 and prior to the Exercise Date, the Company Shareholders may elect (by majority
vote) to cause the Merger and to receive the Strike Price as  consideration  for
the merger of the Company  with and into a wholly  owned  subsidiary  of Holder,
pursuant  to the  terms  and  conditions  of the  Merger  Agreement,  in lieu of
consummating the Purchase  Agreement.  The Company  Shareholders  shall make the
election  contemplated  by this subsection (ii) before three business days prior
to the Exercise  Date by  delivering  to Holder a written  "Notice of Election,"
executed by Company  Shareholders  holding a majority of the voting power of the
outstanding shares of stock of the Company entitled to vote.

                           (iii)    Regardless of whether Company Shareholders
make the  election  contemplated  by  subsection  (ii),  the number of shares of
Holder Common Stock  required to be given in exchange for each Option Share upon
exercise  of this Option  shall be  adjusted as provided in Section  1.08 of the
Merger Agreement.

                  5.  Return  of Option  Payment.  If on the  Exercise  Date (i)
Parent and  Subsidiary  have  satisfied  all of their  conditions to closing and
fulfilled their  obligations or covenants  under the Purchase  Agreement (or the
Merger Agreement, as the case may be) and, (ii) Parent and Subsidiary are ready,
willing  and  able  to  close  on the  Exercise  Date  and,  (iii)  the  Company
Shareholders  and  the  Company  have  failed  to  fulfill  any of its  material
obligations or covenants under the Purchase  Agreement (or the Merger Agreement,
as the case may be), the Company Shareholders shall return the Option Payment to
Holder.  Provided,  however,  in the event that  neither  party can  fulfill its
obligations  under the Merger  Agreement the Option Payment shall be returned to
Holder.

                  6.       Transferability.  This Option shall be transferable
only among affiliates of the Holder.

                  7. Loss of Option  Certificate.  Upon  receipt by the  Company
Shareholders  of  satisfactory  evidence  of the  loss,  theft,  destruction  or
mutilation of this Option and either (in the case of loss, theft or destruction)
reasonable indemnification, or (in the case of mutilation) the surrender of this
Option for  cancellation,  the Company  Shareholders will execute and deliver to
Holder, without charge, a new Option of like denomination.

                  8.  Limited  Rights of Option  Holder.  The Holder  shall not,
solely by virtue of being the Holder of this Option, have any of the rights of a
holder of voting securities of the Company,  either at law or equity, until such
Option shall have been duly exercised.

                  9.       Escrow of Option Shares.  Contemporaneously with the
execution hereof,  Company  Shareholders shall place in escrow the Option Shares
on terms reasonably acceptable to Holder.

                  10.  Mandatory  Sale.  To the extent that less than all of the
shareholders  of Company have  executed  this Option,  the Company  Shareholders
agree to execute their right to a "Mandatory Sale" by all shareholders  pursuant
to the Third Amended and Restated Agreement of Shareholders with the Company.

                  11. Tax Matters. To the extent the Company  Shareholders elect
to receive the Strike Price pursuant to Section 4.(ii), each Company Shareholder
represents and warrants that he has, and as of the Exercise Date,  will have, no
present plan,  intention or  arrangement  to dispose of any of the Holder Common
Stock  received in the Merger if such  disposition  would reduce the fair market
value of Holder  Common  Stock (with such fair market  value  measured as of the
Exercise Date) retained by such shareholder to an amount less than fifty percent
of the  fair  market  value  of the  Company  stock  held  by  such  shareholder
immediately before the Merger.

                  12.      Miscellaneous.

                           (a)      Applicable Law.  THIS AGREEMENT SHALL BE
GOVERNED BY AND  CONSTRUED IN  ACCORDANCE  WITH THE INTERNAL  LAWS,  BUT NOT THE
CHOICE OF LAW PROVISIONS, OF THE STATE OF DELAWARE.

                           (b)      Headings.  The headings herein are for
convenience only and are not part of this Option and shall not affect the 
interpretation thereof.

                           (c) Arbitration.  Any controversy,  dispute, or claim
         arising  out  of,  in   connection   with,   or  in  relation  to,  the
         interpretation,  performance  or  breach  of  this  Option,  including,
         without  limitation,  the validity,  scope, and  enforceability of this
         Section  9(c),  may at the  election of any party be solely and finally
         settled by arbitration  conducted in Kansas,  by and in accordance with
         the  then-existing  rules for  commercial  arbitration  of the American
         Arbitration Association,  or any successor organization.  Judgment upon
         any award rendered by the  arbitrator(s) may be entered by the State or
         Federal  Court  having  jurisdiction  thereof.  Any of the  parties may
         demand  arbitration  by written notice to the other and to the American
         Arbitration  Association  ("Demand  for  Arbitration").  Any Demand for
         Arbitration  pursuant to this Section 9(c) shall be made within one (1)
         year  from the date that the  dispute  upon  which the  demand is based
         arose.  The parties  intend that this  agreement to arbitrate be valid,
         enforceable and irrevocable.

                           (d)  Attorney's  Fees.  If  any  suit,   action,   or
         arbitration  arising out of or related to this Option is brought by any
         party, the prevailing party or parties shall be entitled to recover the
         costs and fees  (including  without  limitation  reasonable  attorneys'
         fees, the fees and costs of experts and consultants,  copying,  courier
         and  telecommunication  costs, and deposition costs and all other costs
         of discovery) incurred by such party or parties in such suit or action,
         including without limitation any post-trial or appellate proceeding, or
         in the  collection or  enforcement  of any judgment or award entered or
         made in such suit or action.

                           (e)      Binding Effect.  This Option shall be
binding upon and shall inure to the benefit of the Company Shareholders, the
Holder  and their  respective  successors,  permitted  assigns,  heirs and legal
representatives, as the case may be.

                           (f)      Defined Terms.  All capitalized terms not
otherwise  defined herein shall have the meanings ascribed thereto in the Merger
Agreement.


<PAGE>



                  IN WITNESS WHEREOF,  the undersigned Company Shareholders have
caused this Option to be executed by an  appropriate  officer  thereof as of the
26th day of May, 1995.

                              Company Shareholders

               First Reserve Secured Energy Assets Fund, Limited
                  Partnership, a Delaware limited partnership

                   By: First Reserve Corporation, a Delaware
                    corporation, as managing general partner

                                      /s/

                        Name: __________________________
                       Title: __________________________


             First Reserve Fund V, Limited Partnership, a Delaware
                              limited partnership

               By: First Reserve Corporation, as managing general
                                    partner

                                      /s/

                        Name: __________________________
                       Title: __________________________

              American Gas & Oil Investors, Limited Partnership, a
                          New York limited partnership

               By: First Reserve Corporation, as managing general
                                    partner

                                      /s/

                        Name: __________________________
                       Title: __________________________



                                     <PAGE>


                AmGO II, Limited Partnership, a New York limited
                                  partnership

               By: First Reserve Corporation, as managing general
                                    partner

                                      /s/

                        Name: __________________________
                       Title: __________________________

               AmGO III, Limited Partnership, a New York limited
                                  partnership

               By: First Reserve Corporation, as managing general
                                    partner

                                      /s/

                        Name: __________________________
                       Title: __________________________

                     Comdisco, Inc., a Delaware corporation

                                      /s/

                      Name: _____________________________
                      Title _____________________________

                                      /s/
                                  J.W. Decker

ACKNOWLEDGED AND AGREED
TO BY HOLDER:
Hugoton Exploration Corporation,
a Kansas corporation
/s/
Name:    __________________
Title:   __________________


<PAGE>

EXHIBIT D  SHAREHOLDER AGREEMENT BETWEEN COG AND SHAREHOLDER OF COMPANY

                             SHAREHOLDER AGREEMENT


                  This Agreement of Shareholders  (this "Agreement") dated as of
May 26, 1995, is entered into by and among Hugoton Energy Corporation,  a Kansas
corporation (the "Parent"), Consolidated Oil & Gas, Inc., a Delaware corporation
(the   "Corporation"),   and  the   undersigned   shareholders  of  Parent  (the
"Shareholders").

                                    RECITALS

                  A.       The Corporation has entered into an Agreement and
Plan of Merger with Parent, Hugoton Exploration Corporation and the Corporation
dated May 26, 1995 (the "Merger Agreement").

                  B.       As a condition to the execution of the Merger 
Agreement, the Shareholders are entering into this Agreement to determine 
certain aspects of the governance of the Parent regarding the issuance of 
shares in connection with the Merger Agreement.

                                   AGREEMENTS

                  NOW,  THEREFORE,  in  consideration  of  the  mutual  promises
contained herein, the parties agree as follows:

                                   ARTICLE I
                    SHAREHOLDER VOTING REGARDING THE MERGER

                  Notwithstanding  any  provision  of  Parent's  certificate  of
incorporation or bylaws, as amended,  to the contrary,  the Shareholders  hereby
agree to vote  all  shares  of  equity  securities  of the  Parent  held by them
("Stock") in favor of the Merger  Agreement unless the Merger Agreement has been
terminated in accordance with its terms.

                                   ARTICLE II
                                 MISCELLANEOUS

                  Section 2.1  Term.  This Agreement shall terminate and be of 
no further force and effect at the termination of the Merger Agreement.

                  Section 2.2 Execution by Transferee.  Notwithstanding anything
herein to the contrary,  as a condition to any sale,  transfer,  pledge or other
disposition of Stock,  the transferee,  unless he is already a signatory to this
Agreement, shall become a signatory to this Agreement.

<PAGE>
                  Section 2.3  Successors.  This Agreement shall be binding upon
and shall operate for the benefit of Corporation,  its  shareholders,  and their
respective  successors,  assigns,  executors,  administrators  and heirs, and it
shall be binding upon any entity to whom any Stock of Parent is  transferred  in
accord  with  or in  violation  of the  provisions  of this  Agreement,  and the
executor or administrator of such entity.

                  Section 2.4  Modification.

                           2.4.1 No modification,  amendment or waiver of any of
         the provisions of this Agreement  shall be effective  unless in writing
         and signed by all parties hereto.

                           2.4.2  Each  Shareholder  covenants  not to vote  any
         Stock in favor of any amendment of the certificate of  incorporation or
         bylaws of Parent,  if such amendment would materially  modify the terms
         or  frustrate  the purpose of this  Agreement  or the  consummation  or
         approval of the Merger Agreement,  unless the vote on such amendment is
         approved unanimously by the parties to this Agreement.

                  Section 2.5 Non-Waiver. The failure to enforce at any time any
of the provisions of this  Agreement,  or to require at any time  performance by
any other party of any of the Provisions hereof, shall in no way be construed to
be a waiver of such provisions.

                  Section  2.6  Partial  Invalidity.  If any  clause,  sentence,
paragraph,   section  or  part  of  this  Agreement  shall  be  deemed  invalid,
unenforceable or against public policy, the part which is invalid, unenforceable
or contrary to public policy shall not affect, impair, invalidate or nullify the
remainder  of  this   Agreement,   but  the  invalidity,   unenforceability   or
contrariness  to public policy shall be confined  only to the clause,  sentence,
paragraph,  section or part of this Agreement so invalidated,  unenforceable  or
against public policy.

                  Section 2.7 Entire Agreement. This Agreement contains the full
understanding  of the parties  hereto with respect to the subject matter hereof,
and there are no representations, warranties, agreements or understandings other
than expressly contained herein.

                  Section 2.8 GOVERNING LAW. THIS AGREEMENT SHALL BE GOVERNED BY
AND CONSTRUED  ACCORDING TO THE LAWS OF THE STATE OF KANSAS,  WITHOUT  REGARD TO
ITS CONFLICTS OF LAW PRINCIPLES.
<PAGE>
                  Section 2.9 Execution in  Counterpart.  This  Agreement may be
executed in one or more identical counterparts,  which when taken together, will
constitute one, fully executed, original document.

                  Section 2.10 Arbitration.  Any controversy,  dispute, or claim
arising  out of, in  connection  with,  or in relation  to, the  interpretation,
performance or breach of this  Agreement,  including,  without  limitation,  the
validity,  scope and enforceability of this Section 2.10, may at the election of
any party, be solely and finally settled by arbitration  conducted in Kansas, by
and in accordance with the then existing rules for commercial arbitration of the
American Arbitration Association,  or any successor organization.  Judgment upon
any award rendered by the  arbitrator(s)  may be entered by the state or federal
court having jurisdiction  thereof. Any of the parties may demand arbitration by
written notice to the other and to the American Arbitration Association ("Demand
for  Arbitration").  Any Demand for  Arbitration  pursuant to this  Section 2.10
shall be made before the earlier of (i) the expiration of the applicable statute
of  limitations  with  respect to such  claim,  or (ii) 60 days from the date on
which a lawsuit is brought by any other party with  respect to such  claim.  The
parties  intend that this  agreement  to  arbitrate  be valid,  enforceable  and
irrevocable.  Time is of the essence in the resolution of any such dispute,  and
the parties agree to instruct the arbitrator to institute accelerated procedures
to resolve any dispute. The losing party shall reimburse the prevailing party in
such arbitration for the prevailing  party's legal fees and expenses  reasonably
incurred in connection with such arbitration.

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

CONSOLIDATED OIL & GAS, INC.                   HUGOTON ENERGY CORPORATION,
a Delaware corporation                         a Kansas corporation


By:      /s/                                   By:      /s/                    
Name:    J.W. Decker                           Name:    Floyd C. Wilson
Title:   Chief Executive Office                Title:   Chief Executive Officer
<PAGE>

                                                ODYSSEY PARTNERS, L.P.


                                                 By:      /s/                  
                                                 Name:                         
                                                 Title:                        


                                                         /s/                   
                                                         Floyd C. Wilson


<PAGE>

EXHIBIT E    AGREEMENT OF SHAREHOLDERS BETWEEN THE COMPANY AND SHAREHOLDERS OF
             COG

                                                                  EXECUTION COPY



                           AGREEMENT OF SHAREHOLDERS


                  This Agreement of Shareholders  (this "Agreement") dated as of
September 7, 1995, is entered into by and between Hugoton Energy Corporation,  a
Kansas  corporation   ("Corporation"),   and  the  undersigned  shareholders  of
Corporation (the "Shareholders").

                                    RECITALS

                  A.       Corporation was formed and organized under the laws
of the State of Kansas on April 23, 1987.

                  B.       Pursuant to the Agreement and Plan of Merger by and
among Corporation, Hugoton Exploration Corporation and Consolidated Oil & Gas,
Inc. ("COG"), the shareholders of COG collectively received 9,090,736 shares of
the common stock of Corporation, without par value (the "Common Stock").

                  C.       As of the date hereof, the Shareholders collectively
own 78.56% of the issued and outstanding shares of the Common Stock, as follows:


 SHAREHOLDER                       SHARES                            PERCENTAGE
 -----------                    ---------                            ----------
 AmGO                             780,407                                 3.96%

 AmGO II                          407,276                                 2.07%

 AmGO III                          66,495                                 0.34%

 FRSEA                          1,833,956                                 9.31%

 Fund V                         2,138,802                                10.86%

 J.W. Decker                      237,480                                 1.83%

 Comdisco, Inc.                 3,626,320                                18.41%

 Floyd Wilson                   4,128,048                                20.96%

 Odyssey Partners, L.P.         2,132,086                                10.82%
                               ----------                                ------
          TOTAL                15,350,870                                78.56%
                               ==========                                ======

                  D.       Shareholders desire to promote their mutual interests
and the interests of Corporation by imposing certain restrictions and
obligations upon themselves, Corporation and the shares of Common Stock.

                                       1
<PAGE>

                                   AGREEMENTS

                  NOW,  THEREFORE,  in  consideration  of  the  mutual  promises
contained herein, it is mutually agreed that:

                                   ARTICLE I
                                  TRANSACTION

                  Shareholders  acknowledge that this Agreement  represents only
one aspect of a series of transactions among Shareholders, COG and Corporation.

                                   ARTICLE II
                             ELECTION OF DIRECTORS

                  Notwithstanding any provision of Corporation's  certificate of
incorporation or bylaws, as amended to the contrary,  the Shareholders agree, so
long as they own such  shares,  to vote their  shares of Common  Stock to ensure
that the following shall occur.

                  Section  2.1  The  Board  of  Directors  of  Corporation  (the
"Board"),  which is divided into three classes,  shall initially consist of nine
members.  Class I members  having a  three-year  term  ending in 1998;  Class II
members  having a term ending in 1997; and Class III members having terms ending
in 1996.  Each  class  shall be  subject to  re-election  pursuant  to the terms
hereof.

                  Section  2.2 The  Shareholders  shall use their  best  efforts
(including  voting the  shares  owned by them and their  affiliates,  in calling
special  meetings of the  Shareholders  and  executing  and  delivering  written
consents,  to elect nine members of the Board of  Directors  of the  Corporation
(the "Board")), consisting of the following:

                           (a)      One Class II member designated by FRSEA;

                           (b)      One Class II member designated by Fund V;

                           (c)      One Class III member designated by First
                                    Reserve Corporation (provided that such
                                    member shall be J.W. Decker so long as he is
                                    an executive officer of the Corporation);

                           (d)      One Class I member designated by Comdisco,
                                     Inc.;

                           (e)      Two Class III members designated by Floyd C.
                                    Wilson;

                           (f)      One Class II member designated by Odyssey
                                    Partners, L.P.; and

                           (g) Two members designated by a vote of a majority of
         the  Shareholders  of  Corporation  (both of which  shall be members of
         Class  I);  provided  that the  Shareholders  agree  that  the  initial
         directors  nominated  for election  pursuant to this  subparagraph  (g)
         shall be John T. McNabb, II and David Elkouri.

                  Class I,  Class II and  Class III  members  shall  have  terms
expiring in accordance with the Company's by-laws.

                  Section 2.3 The party  designating  a director may remove such
director and designate  his or her  successor.  If the director  designated by a
party resigns, dies, becomes

                                       2
<PAGE>

incapacitated or is otherwise unable to serve, the
party  designating  such  director  may  designate  his  or her  successor.  All
Shareholders  shall vote all  shares  held by them in favor of the  election  or
removal of the persons so designated. Action taken by any of the Shareholders in
designating  or  removing   directors  shall  be  in  writing  executed  by  the
Shareholder  entitled to take such action and  promptly  delivered  to the other
Shareholders and Corporation.

                  Section 2.4  Termination of Right to Elect Directors.

                  2.4.1 Each  Shareholder's  right to designate a director shall
terminate  if such  Shareholder's  ownership  of Common Stock is below 5% of the
outstanding  Common  Stock;  except  for Mr.  Decker,  whose  board  seat,  upon
reelection or vacancy,  shall be designated by First Reserve  Corporation (whose
stock  ownership  for the purpose of this Section  2.4.1 shall be the  aggregate
ownership of their managed funds). Provided,  however, that if Mr. Wilson is not
the Chief  Executive  Officer of the  Corporation and his ownership is less than
10% and more than 5% of the  outstanding  Common Stock,  Mr.  Wilson's  right to
designate directors shall be reduced from two to one.

                  2.4.2  If a  shareholder  (the  "Selling  Shareholder")  is no
longer eligible to designate a director,  or, in the case of John T. McNabb, II,
he is unable to serve,  then the board  shall (i)  shrink the size of the board,
(ii) leave the vacated seat empty, or (iii) appoint a replacement to serve until
the next election of directors by shareholders and through its normal nominating
procedure,  select a nominee to fill the open seat for election by  shareholders
at the next annual meeting.

                                  ARTICLE III
                               RESTRICTIVE LEGEND

                  Each certificate  evidencing Common Stock subject hereto shall
bear a legend as follows:

                                    The  shares  of  stock  represented  by this
                  certificate  are,  until  sale,  subject  to an  Agreement  of
                  Shareholders,  dated as of  September 7, 1995, a copy of which
                  is on file in the office of Corporation.

                  Any  certificate  evidencing  Common  Stock  subject  to  this
Agreement which is hereafter issued shall bear the same legend.

                                   ARTICLE IV
                                 MISCELLANEOUS

                  Section 4.1 Term.  This Agreement shall terminate and be of no
further  force  and  effect at the  close of  business  on  September  7,  2005;
provided,  however,  that this  Agreement  may be  terminated by the vote of the
holders of at least 100% of the shares of Common Stock subject hereto.

                  Section  4.2  Notices.  Any  notice  to be given by any  party
hereunder to any other shall be in writing,  mailed by  certified or  registered
mail, return receipt  requested,  shall be addressed to all other parties at the
addresses set forth under their signatures:

                  All such notices  shall be deemed to be given three days after
the date of mailing thereof.

                                       3
<PAGE>

                  Section 4.3  Modification.

                           4.3.1  Notwithstanding  anything  to the  contrary in
         this Agreement or otherwise,  no  modification,  amendment or waiver of
         any of the  provisions of this Agreement  shall be effective  unless in
         writing and signed by all parties hereto.

                           4.3.2  Each  Shareholder  covenants  not to vote  any
         shares of Common Stock in favor of any amendment of the  certificate of
         incorporation  or  bylaws  of  corporation,  if  such  amendment  would
         materially modify the terms or frustrate the purpose of this Agreement,
         unless  the  vote on such  amendment  is  approved  unanimously  by the
         parties to this Agreement.

                  Section 4.4 Non-Waiver. The failure to enforce at any time any
of the provisions of this  Agreement,  or to require at any time  performance by
any other party of any of the Provisions hereof, shall in no way be construed to
be a waiver of such provisions.

                  Section  4.5  Partial  Invalidity.  If any  clause,  sentence,
paragraph,   section  or  part  of  this  Agreement  shall  be  deemed  invalid,
unenforceable or against public policy, the part which is invalid, unenforceable
or contrary to public policy shall not affect, impair, invalidate or nullify the
remainder  of  this   Agreement,   but  the  invalidity,   unenforceability   or
contrariness  to public policy shall be confined  only to the clause,  sentence,
paragraph,  section or part of this Agreement so invalidated,  unenforceable  or
against public policy.

                  Section 4.6 Entire Agreement. This Agreement contains the full
understanding  of the parties  hereto with respect to the subject matter hereof,
and there are no representations, warranties, agreements or understandings other
than expressly contained herein.

                  Section 4.7 GOVERNING LAW. THIS AGREEMENT SHALL BE GOVERNED BY
AND CONSTRUED  ACCORDING TO THE LAWS OF THE STATE OF KANSAS,  WITHOUT  REGARD TO
ITS CONFLICTS OF LAW PRINCIPLES.

                  Section 4.8 Execution in  Counterpart.  This  Agreement may be
executed in one or more identical counterparts,  which when taken together, will
constitute one, fully executed, original document.

                  Section 4.9 Transfer. The right to appoint directors hereunder
is a  personal  right  and  may  not  be  transferred  by  operation  of  law or
voluntarily, except among affiliates under common control.

                                       4
<PAGE>

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

COMPANY                                     SHAREHOLDERS

HUGOTON ENERGY                      FIRST RESERVE FUND V, LIMITED
CORPORATION, a Kansas corporation   PARTNERSHIP, a Delaware  limited partnership
/s/                                 By:      First Reserve Corporation,
                                                     as managing general partner
Name:    ______________________

Title:   ______________________             /s/

                                    Name:    _________________________

                                    Title:   _________________________


                                    FIRST RESERVE SECURED ENERGY ASSETS FUND,
                                    LIMITED PARTNERSHIP, a Delaware limited
                                    partnership

                                    By:      First Reserve Corporation,
                                             as managing general partner

                                           /s/

                                    Name:    __________________________

                                    Title:   __________________________
                                       5
<PAGE>


                                    AMERICAN GAS & OIL INVESTORS, LIMITED
                                    PARTNERSHIP, a New York limited partnership

                                    By:      First Reserve Corporation,
                                             as managing general partner

                                           /s/

                                    Name:    __________________________

                                    Title:   __________________________


                                    AmGO II, LIMITED PARTNERSHIP,
                                    a New York limited partnership

                                    By:      First Reserve Corporation,
                                             as managing general partner

                                          /s/

                                    Name:    __________________________

                                    Title:   __________________________


                                    AmGO III, LIMITED PARTNERSHIP,
                                    a New York limited partnership

                                    By:      First Reserve Corporation,
                                             as managing general partner

                                           /s/

                                    Name:    __________________________

                                    Title:   __________________________


                                      /s/ J.W. Decker


                                    COMDISCO, INC. a Delaware corporation

                                    By:       /s/ Alan Andreini

                                    Name:    ________________________________

                                    Title:   ________________________________


                                   ODYSSEY PARTNERS, L.P.

                                   By:       /s/

                                   Name:    Stephen Berger

                                   Title:   General Partner

                                      /s/
                                        Floyd C. Wilson

                                       6
<PAGE>

EXHIBIT F  REGISTRATION RIGHTS AGREEMENT BETWEEN THE COMPANY AND THE 
           SHAREHOLDERS OF COG

                                    REGISTRATION RIGHTS AGREEMENT

                  This Registration Rights Agreement (this "Agreement") dated as
of  September  7,  1995,  is  entered  into  by and  among  (i)  Hugoton  Energy
Corporation, a Kansas corporation  ("Corporation"),  (ii) Odyssey Partners, L.P.
("Odyssey"), (iii) Cramer, Rosenthal, McGlynn, Inc. ("CRM"), (iv) American Gas &
Oil Investors,  Limited Partnership,  a New York limited  partnership;  AmGO II,
Limited  Partnership,  a  New  York  limited  partnership;   AmGO  III,  Limited
Partnership, a New York limited partnership; First Reserve Secured Energy Assets
Fund, Limited Partnership, a Delaware limited partnership; First Reserve Fund V,
Limited Partnership,  a Delaware limited partnership  (collectively,  the "First
Reserve Group"); (v) COMDISCO,  Inc., a Delaware corporation  ("Comdisco");  and
(vi) Floyd C. Wilson  (collectively,  Odyssey,  CRM,  the First  Reserve  Group,
Comdisco and Mr. Wilson shall be referred to as the "Shareholders").

                                    RECITALS

                  A.  Pursuant to the  Agreement and Plan of Merger by and among
Corporation and Consolidated Oil & Gas, Inc., ("COG") executed contemporaneously
herewith  (the "Merger  Agreement"),  the First  Reserve Group and Comdisco will
collectively  receive an aggregate  of  9,090,736  shares of the common stock of
Corporation, without par value (the "Common Stock").

                  B.       CRM and Odyssey have certain registration rights 
pursuant to _____________________and _____________________ ("Prior Agreements").

                  C. As a condition of the Merger  Agreement and in  replacement
of all  rights  under  Prior  Agreements,  Corporation  has  agreed  to grant to
Shareholders  registration  rights with respect to their Common  Stock,  as more
fully described below.

                  D.       All terms used but not defined in this Agreement 
shall have the meaning ascribed to them in the Merger Agreement.

                                   AGREEMENTS

                  NOW,  THEREFORE,  in  consideration  of  the  mutual  promises
contained herein, it is mutually agreed as follows:

                  Section 1         Piggy-Back Registration Rights.

                  1.1 If  Corporation  proposes to file, on its behalf and/or on
behalf of any Shareholder,  a registration statement under the Securities Act of
1933, as amended (the "Securities  Act") on Form S-1, S-2 or S-3  ("Registration
Statement"),  other than in connection  with a dividend  reinvestment,  employee
stock  purchase,  option  or  similar  plan  or in  connection  with  a  merger,
consolidation or  reorganization,  Corporation shall give written notice to each
Shareholder at least thirty days before the filing with the Securities  Exchange
Commission  ("SEC") of such Registration  Statement.  Such notice shall offer to
include  in such  filing  all or a portion  of the  Common  Stock  owned by each
Shareholder.  Each Shareholder ("Selling Shareholder" or collectively,  "Selling
Shareholders")  who  desires to include all or a portion of its shares of Common
Stock in such  Registration  Statement  shall give written notice to Corporation
within 20 days after the date of mailing of such offer  specifying the amount of
Common Stock to be  registered  (for the purpose of this  Section 1,  "Shares").
Corporation  shall thereupon  include in such filing the Shares and,  subject to
its  right to  withdraw  such  filing,  shall  use its best  efforts  to  effect
registration under the Securities Act of the Shares.
<PAGE>
                  1.2 The right of the Selling  Shareholders  to have the Shares
included in any Registration Statement in accordance with the provisions of this
Section 1 shall be subject to the following conditions:

                           1.2.1  Corporation  shall  have the right to  require
         that Selling Shareholders  participating in such Registration Statement
         agree to refrain  from  offering or selling any shares of Common  Stock
         that they own which are not included in any such Registration Statement
         in  accordance  with this  Section  1 for any  reasonable  time  period
         specified,  not to exceed 180 days, by any managing  underwriter of the
         offering to which such Registration Statement relates;

                           1.2.2 If any managing  underwriter of the offering to
         which the Registration  Statement relates informs  Corporation that the
         total  number of Shares  requested  by the Selling  Shareholders  to be
         included in the Registration  Statement is sufficiently large to affect
         the success of such offering  adversely,  then Corporation will include
         only the number of shares,  if any, in the Registration  Statement that
         such managing  underwriters shall advise Corporation will not so affect
         the  offering,  and  reductions  in the  number of Shares  will be made
         proportionate to the respective percentages of ownership of the Selling
         Shareholders,  provided, however, if the request being made is pursuant
         to a  Shareholder  request  under  Section 2, the  Shares  sold by such
         Shareholder making the request under Section 2 shall not be reduced;

                           1.2.3   Corporation   shall   furnish   each  Selling
         Shareholder  with  such  number of  copies  of the  prospectus  used or
         produced by Corporation in connection with the  Registration  Statement
         (including  any  preliminary  prospectus  or  supplemental  or  amended
         prospectus)  (the   "Prospectus")  as  such  Selling   Shareholder  may
         reasonably  request in order to facilitate the sale and distribution of
         its shares; and
<PAGE>
                  1.3  Notwithstanding  the  foregoing,  Corporation in its sole
discretion may determine not to file the Registration  Statement or proceed with
the  offering  as to which the  notice  specified  herein is given  without  any
liability to Selling Shareholders.

                  1.4 The rights of Shareholders under Section 1 may upon notice
to the Corporation be transferred to their respective  affiliates in combination
with a transfer  of shares to such  affiliates  (including,  but not limited to,
distributions to limited partners of Odyssey or the First Reserve Group).

                  Section 2         Independent Registration Rights.

                  2.1 The  Corporation  hereby  grants  to each of (i) the First
Reserve Group,  (ii) Comdisco,  Inc., (iii) Odyssey and (iv) Floyd C. Wilson, if
he is no longer  Chief  Executive  Officer  of the  Company,  (each,  a "Selling
Shareholder")  a  separate  right to  require  the  Corporation  to use its best
efforts to cause the registration and sale in an underwritten public offering of
all  or  a  portion  (but  not  less  than  200,000   shares)  of  such  Selling
Shareholder's  shares in  accordance  with this  Section  2. In the event that a
Selling Shareholder wishes to exercise such right, it shall give the Corporation
written  notice of its  desire to sell such  shares,  specifying  the  number of
shares  proposed to be sold (for the purposes of this Section 2,  "Shares")  and
the plan for distribution of the Shares. Corporation will thereafter:

                           2.1.1  Prepare  and  file as soon  as  practicable  a
         Registration  Statement  with  the SEC on Form S-1 (or Form S-2 or Form
         S-3,  if  Corporation  is  entitled to use such forms) and use its best
         efforts to cause such  Registration  Statement  to become  effective in
         order that the  Shareholders may sell the Shares in accordance with the
         proposed plan of distribution;

                           2.1.2  Prepare and file with the SEC such  amendments
         and supplements to such  Registration  Statement and Prospectus used in
         connection  therewith  as may be  necessary  to keep such  Registration
         Statement effective and to comply with the provisions of the Securities
         Act with respect to the offer of the Shares during the period  required
         for distribution of the Shares,  which period shall not be in excess of
         60 days from the effective date of such Registration Statement; and
<PAGE>
                           2.1.3 Furnish to each of the Shareholders such number
         of copies of the Prospectus  (including any  preliminary  prospectus or
         supplemental or amended  prospectus) as the Shareholders may reasonably
         request in order to facilitate the sale and distribution of the Shares.

                  2.2 The right of the  Shareholders to register Shares pursuant
to the  provisions  of  this  Section  2  shall  be  subject  to  the  following
conditions:

                           2.2.1 If a request for registration is made within 60
         days prior to the conclusion of Corporation's then current fiscal year,
         Corporation   shall   have  the  right  to  delay  the  filing  of  the
         Registration  Statement  for  such  period  of time  until  Corporation
         receives its audited financial statements for such fiscal year;

                           2.2.2    Each of (i) Odyssey, (ii) the First Reserve
         Group , and (iii) Comdisco, Inc. shall each separately be entitled to
         request only one registration pursuant to this Section 2 and

                           2.2.3  Except  without  the  consent  of its board of
         directors,  Corporation  shall not be required  to file a  Registration
         Statement  on behalf of  Shareholders  under this  Section 2 within six
         months after the effective  date of a  Registration  Statement in which
         the  Shareholders are offered an opportunity to include shares pursuant
         to Section 1 hereof.

                  Section 3         Exclusive Registration Rights and Transfer.

                  The  registration  rights granted to Shareholders  pursuant to
this Agreement are the only such rights held by any  shareholders of Corporation
on the date hereof. Each Shareholder hereby disclaims any other such rights they
may have had under Prior Agreements.  The Corporation may not grant, without the
consent of the  Shareholders,  any such rights  which are superior to the rights
granted herein. Except as provided in this Section 3 and Section 1.4, the rights
granted under this Agreement are granted  specifically to and for the benefit of
the Shareholders and shall not pass to any transferee of Common Stock.

                  Section 4 Expenses.  Corporation will bear all the expenses in
connection with any Registration  Statement under Section 1 or Section 2 hereof,
other  than  transfer  taxes  payable on the sale of such  shares,  the fees and
expenses of counsel to any  Shareholders  and fees and  commissions  of brokers,
dealers and underwriters.
<PAGE>
                  Section 5 Recall  of  Prospectuses,  etc.  With  respect  to a
Registration  Statement or amendment  thereto filed pursuant to this  Agreement,
if, at any time, Corporation notifies the Selling Shareholders that an amendment
or  supplement  to such  Registration  Statement or amendment or the  Prospectus
included  therein is necessary or  appropriate,  the Selling  Shareholders  will
forthwith cease selling and  distributing  shares  thereunder and will forthwith
redeliver  to  Corporation  all  copies  of  such  Registration   Statement  and
Prospectuses  then in their possession or under their control,  Corporation will
use its best  efforts  to cause  any such  amendment  or  supplement  to  become
effective as soon as practicable and will furnish the Selling  Shareholders with
a reasonable  number of copies of such amended or  supplemented  prospectus (and
the period  during  which  Corporation  is required  to use its best  efforts to
maintain such  Registration  Statement in effect pursuant to this Agreement will
be  increased  by the  period  from the date on which the  selling  Shareholders
ceased  selling and  distributing  shares  thereunder  to the date on which such
amendment or supplement becomes effective).

                  Section 6  Cooperation  of Existing  Shareholder.  Corporation
shall be  entitled  to require  that each  selling  Shareholder  cooperate  with
Corporation in connection with a registration of shares of Common Stock pursuant
to this  Agreement  and  furnish  (i) such  information  as may be  required  by
Corporation or by the SEC in connection therewith and (ii) such representations,
undertakings  and  agreements  as  may be  required  by  the  SEC in  connection
therewith.

                  Section 7 Cooperation by Corporation.  The  Corporation  shall
take all actions necessary,  appropriate or customary to effect the registration
and sale of any shares of Common  Stock to be  registered  and sold  pursuant to
Section 2 hereof, including,  without limitation, (i) entering into arrangements
with  underwriters  selected by the selling  stockholder in connection with such
sale,   (ii)  execution  of  a  customary   Underwriting   Agreement  with  such
underwriters,  (iii)  registration of such shares under all "blue sky" laws that
the Corporation or such underwriters deem necessary or appropriate in connection
with such sale (provided that the Corporation shall not be required to execute a
general  consent to service of process or to qualify to do business as a foreign
corporation in any jurisdiction  where it is not so qualified in order to comply
with such blue sky laws),  and (iv)  delivery of such legal  opinions  and "cold
comfort" letters as the underwriters may request.
<PAGE>
                  Section 8         Indemnification.

                  8.1 In the event of any  registration of any securities  under
the Securities Act pursuant to this  Agreement,  Corporation  will indemnify and
hold harmless each Selling  Shareholder,  any underwriter and each other person,
if any, who controls such Selling  Shareholder or underwriter within the meaning
of the Securities Act, against any losses, claims, damages or liabilities, joint
or several,  to which each such Selling  Shareholder  or  underwriter or Selling
Shareholder may become subject,  under the Securities Act or otherwise,  insofar
as such losses,  claims,  damages or liabilities (or actions in respect thereof)
arise out of or are based upon any untrue  statement or alleged untrue statement
of any material fact  contained in such  Registration  Statement or  preliminary
prospectus (if used prior to the effective date of such Registration  Statement)
or final or summary prospectus  contained therein (if used during the period the
Corporation is required to keep the Registration  Statement  effective),  or any
amendment or supplement  thereto, or arise out of or are based upon the omission
or alleged  omission  to state  therein a material  fact  required  to be stated
therein or necessary to make the  statements  made therein not  misleading,  and
will reimburse each such Selling Shareholder, underwriter and Selling person for
any  legal or any  other  expenses  as  reasonably  incurred  by such  person in
connection with  investigating or defending any such action or claim,  excluding
any amounts paid in settlement of any  litigation,  commenced or threatened,  if
such  settlement is effected  without the prior written  consent of Corporation;
provided,  however,  that Corporation will not be liable to a particular Selling
Shareholder  or  underwriter  in any such case to the extent that any such loss,
claim,  damage,  liability  or expense  arises out of or is based upon an untrue
statement or omission or alleged omission made in said  Registration  Statement,
said preliminary prospectus or said final or summary prospectus or any amendment
or  supplement  thereto,  in  reliance  upon  and  in  conformity  with  written
information  furnished  to  Corporation  by  that  Selling  Shareholder  or  its
affiliates  or  representative,  or by that  underwriter,  as the  case  may be,
specifically for use in the preparation  thereof;  and provided further that the
indemnity  agreement contained in this Section 8 with respect to any preliminary
prospectus  shall  not  inure  to the  benefit  of any  Selling  Shareholder  or
underwriter  or to any person  selling  the same in respect of any loss,  claim,
damage,  liability or action asserted by someone who purchased  shares from such
person  if a copy  of the  final  prospectus  (as the  same  may be  amended  or
supplemented)  in connection  with such  registration  statement was not sent or
given to such  person with or prior to written  confirmation  of the sale and if
the untrue  statement or omission or alleged  untrue  statement or omission of a
material  fact  contained in such  preliminary  prospectus  was corrected in the
final prospectus.

                  8.2 In the event of any  registration of securities  under the
Securities  Act  pursuant to this  Agreement,  each  Selling  Shareholder  shall
indemnify and hold harmless Corporation, each of its directors and officers, any

<PAGE>
underwriter  and  each  other  person,  if  any,  who  controls  Corporation  or
underwriter  within the  meaning of the  Securities  Act,  against  any  losses,
claims,  damages or liabilities,  joint or several,  to which Corporation or any
such director,  officer,  underwriter or Selling  Shareholder may become subject
under the Securities Act or otherwise,  insofar as such losses,  claims, damages
or liabilities (or actions in respect  thereof) arise out of, or are based upon,
any untrue  statement or alleged untrue statement of any material fact contained
in such  Registration  Statement or  preliminary  prospectus or final or summary
prospectus  contained therein,  or any amendment or supplement thereto, or arise
out of or are based upon the  omission or alleged  omission  to state  therein a
material fact required to be stated  therein or necessary to make the statements
made therein not misleading, and will reimburse Corporation, each such director,
officer,  underwriter  and Selling  Shareholder  for any legal or other expenses
reasonably  incurred as incurred by them in  connection  with  investigating  or
defending any such action or claim,  excluding any amounts paid in settlement of
any litigation,  commenced or threatened, if such settlement is effected without
the prior written consent of the Selling Shareholder or its representative;  but
in all such cases only if, and to the extent that, any such loss, claim, damage,
liability  or  expense  arises out of or is based  upon an untrue  statement  or
alleged  untrue  statement  or  omission  or alleged  omission  therein  made in
reliance  upon  and  in  conformity  with  written   information   furnished  to
Corporation   by  the  selling   Shareholder   or  its  Selling   affiliates  or
representative specifically for use in the preparation thereof.  Notwithstanding
the foregoing,  the amount of the indemnity provided by the Selling  Shareholder
pursuant to this Section 8.2 shall not exceed the net proceeds  received by such
Selling Shareholder in such related registration and sale.

                  8.3  Action  commenced.  Promptly  after  receipt  by a  party
entitled  to  indemnification  under  Section 8.1 or 8.2 hereof of notice of the
commencement of any action,  such indemnified  party will, if a claim in respect
thereof  is to be made  against  the  indemnifying  party  under  either of such
Sections,  notify the indemnifying party in writing of the commencement thereof.
In case any such action is brought against the indemnified party and it shall so
notify the  indemnifying  party of the  commencement  thereof,  the indemnifying
party  shall be  entitled  to  participate  in,  and,  to the extent  that it so
chooses,  to assume the defense thereof with counsel reasonably  satisfactory to
such  indemnified  party  (except  that  if the  Selling  Shareholders  are  the
indemnifying  party,  such defense may be assumed only in a manner chosen by the
holders of a majority in  interest  of the shares of Common  Stock owned by such
Selling  Shareholder  and included in the  Registration  Statement  which is the
subject of such action),  and, after notice from the indemnifying  party that it
so chooses,  such indemnifying  party shall not be liable for any legal or other
expenses  subsequently incurred by such indemnified party in connection with the
defense thereof; provided, however, that if the indemnifying party fails to take
reasonable steps necessary to diligently  defend such claim within 20 days after
receiving notice from the indemnified  party that the indemnified party believes
the indemnifying  party has failed to take such steps, the indemnified party may
assume  its own  defense  and the  indemnifying  party  shall be liable  for any
expenses therefor. The indemnity agreements in this Section shall be in addition
to any liabilities which the indemnifying parties may have pursuant to law.
<PAGE>
                  Section  9  Notices.  Any  notice  to be  given  by any  party
hereunder to any other shall be in writing,  mailed by  certified or  registered
mail, return receipt  requested,  shall be addressed to all other parties at the
addresses listed in the Merger Agreement. All such notices shall be deemed to be
given three days after the date of mailing thereof.

                  Section  10  Modification.  Notwithstanding  anything  to  the
contrary in this Agreement or otherwise, no modification, amendment or waiver of
any of the provisions of this Agreement shall be effective unless in writing and
signed by all parties hereto.

                  Section 11 Non-Waiver.  The failure to enforce at any time any
of the provisions of this  Agreement,  or to require at any time  performance by
any other party of any of the provisions hereof, shall in no way be construed to
be a waiver of such provisions.

                  Section  12  Partial  Invalidity.  If  any  clause,  sentence,
paragraph,   section  or  part  of  this  Agreement  shall  be  deemed  invalid,
unenforceable or against public policy, the part which is invalid, unenforceable
or contrary to public policy shall not affect, impair, invalidate or nullify the
remainder  of  this   Agreement,   but  the  invalidity,   unenforceability   or
contrariness  to public policy shall be confined  only to the clause,  sentence,
paragraph,  section or part of this Agreement so invalidated,  unenforceable  or
against public policy.

                  Section 13 Arbitration.  Any  controversy,  dispute,  or claim
arising  out of, in  connection  with,  or in relation  to, the  interpretation,
performance or breach of this  Agreement,  including,  without  limitation,  the
validity,  scope and  enforceability  of this Section 13, may at the election of
any party, be solely and finally settled by arbitration  conducted in Kansas, by
and in accordance with the then existing rules for commercial arbitration of the
American Arbitration Association,  or any successor organization.  Judgment upon
any award rendered by the  arbitrator(s)  may be entered by the state or federal
court having jurisdiction  thereof. Any of the parties may demand arbitration by

<PAGE>
written notice to the other and to the American Arbitration Association ("Demand
for Arbitration").  Any Demand for Arbitration pursuant to this Section 13 shall
be made before the earlier of (i) the  expiration of the  applicable  statute of
limitations with respect to such claim, or (ii) 60 days from the date on which a
lawsuit is brought by any other party with  respect to such  claim.  The parties
intend that this agreement to arbitrate be valid,  enforceable and  irrevocable.
Time is of the essence in the  resolution of any such  dispute,  and the parties
agree to instruct the arbitrator to institute accelerated  procedures to resolve
any  dispute.  The losing party shall  reimburse  the  prevailing  party in such
arbitration  for the  prevailing  party's  legal  fees and  expenses  reasonably
incurred in connection with such arbitration.

                  Section 14  Construction.  The  language  in all parts of this
Agreement shall in all cases be construed simply, according to its fair meaning,
and shall not be construed strictly for or against either of the parties hereto.

                  Section 15 GOVERNING LAW. THIS AGREEMENT  SHALL BE GOVERNED BY
AND CONSTRUED  ACCORDING TO THE LAWS OF THE STATE OF KANSAS,  WITHOUT  REGARD TO
ITS CONFLICTS OF LAW PRINCIPLES.

                  Section 16 Execution in  Counterpart.  This  Agreement  may be
executed in one or more identical counterparts,  which when taken together, will
constitute one, fully executed, original document.

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

CORPORATION                                 SHAREHOLDERS

HUGOTON ENERGY CORPORATION,                 FIRST RESERVE FUND V, LIMITED
a Kansas corporation                                 PARTNERSHIP, a Delaware
                                                     limited partnership
/s/                                                                    
By:      First Reserve Corporation,
                                              as managing general partner
Name:    _____________________

Title:   _____________________                             
   /s/

                                        Name:    __________________________
                                        Title:   __________________________

<PAGE>


                             FIRST RESERVE SECURED ENERGY 
                             ASSETS FUND, LIMITED
                             PARTNERSHIP, a Delaware limited  partnership

                             By:      First Reserve Corporation, 
                                      as managing general partner

                                     /s/
                            Name:    __________________________
                            Title:   __________________________


                            AMERICAN GAS & OIL INVESTORS, LIMITED PARTNERSHIP, a
                            New York limited partnership

                            By:      First Reserve Corporation, as 
                                     managing general partner

                                     /s/
                            Name:    __________________________
                            Title:   __________________________


                            AmGO II, LIMITED PARTNERSHIP, a New York limited
                            partnership

                            By:      First Reserve Corporation, as managing 
                                     general partner

                                     /s/
                            Name:    __________________________

                            Title:   __________________________

<PAGE>
                            AmGO III, LIMITED PARTNERSHIP, a New York limited
                            partnership

                            By:      First Reserve Corporation, as managing 
                                     general partner

                                     /s/
                            Name:    __________________________

                            Title:   __________________________


                           COMDISCO, INC., a Delaware corporation

                            By:      /s/

                            Name:    _______________________________

                            Title:   _______________________________

 
                            ODYSSEY PARTNERS, L.P.
 
                             By:      /s/

                             Name:    _______________________________

                             Title:   _______________________________

<PAGE>

                             CRAMER, ROSENTHAL, McGLYNN, INC.

                              By:      /s/

                              Name:    _______________________________

                              Title:   _______________________________


                              /s/
                               Floyd C. Wilson

<PAGE>




               After  reasonable  inquiry  and to the best of my  knowledge  and
          belief,  I certify that the information set forth in this statement of
          Schedule 13D is true, complete and correct.


          Dated:  September 7, 1995

                             First Reserve Secured Energy Assets Fund,
                             Limited Partnership, a Delaware limited partnership

                             By:      First Reserve Corporation, a Delaware
                                      corporation, as managing general partner
                             Name:  /S/   William E. Macaulay
                             Title: President


                                 Page 16 of 19



<PAGE>



               After  reasonable  inquiry  and to the best of my  knowledge  and
          belief,  I certify that the information set forth in this statement of
          Schedule 13D is true, complete and correct.

          Dated: September 7, 1995

                                 First Reserve Fund V, Limited Partnership,
                                 a Delaware limited partnership
                                 By:      First Reserve Corporation, as managing
                                          general partner
                                 Name:  /S/  William E. Macaulay
                                 Title: President

                                 Page 17 of 19


<PAGE>



               After  reasonable  inquiry  and to the best of my  knowledge  and
          belief,  I certify that the information set forth in this statement of
          Schedule 13D is true, complete and correct.

          Dated: September 7, 1995

                                                   
                                First Reserve Corporation
                                Name:  /S/  William E. Macaulay
                                Title: President



                                 Page 18 of 19


<PAGE>


               After  reasonable  inquiry  and to the best of my  knowledge  and
          belief,  I certify that the information set forth in this statement of
          Schedule 13D is true, complete and correct.

          Dated: September 7, 1995

                                                    
                             Comdisco, Inc., a Delaware corporation
                             Name:  /S/  Alan J. Andreini
                             Title: Executive Vice President


                                                   
                                 Page 19 of 19




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