AVIVA PETROLEUM INC /TX/
SC 13D, 1998-11-12
CRUDE PETROLEUM & NATURAL GAS
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934
                               (Amendment No. __)*


                              AVIVA PETROLEUM INC.
                                (Name of Issuer)

                           COMMON STOCK, NO PAR VALUE
                         (Title of Class of Securities)

                                    05379P205
                                 (CUSIP Number)

                                 ARTHUR H. AMRON
                             WEXFORD MANAGEMENT LLC
                             411 West Putnam Avenue
                               Greenwich, CT 06830
                                 (203) 862-7012
           (Name, Address and Telephone Number of Person Authorized to
                       Receive Notices and Communications)

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

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

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

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

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

<PAGE>

CUSIP No.  05379P205

1   NAME OF REPORTING PERSONS
    Wexford Special Situations 1996, LP
    S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS
    (Intentionally Omitted)

2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)
         (a)  [x]
         (b)  [ ]

3   SEC USE ONLY

4   SOURCE OF FUNDS (See Instructions)
         OO

5   CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS
    2(d) OR 2(e)                        [ ]

6   CITIZENSHIP OR PLACE OF ORGANIZATION
     Delaware

NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON WITH

     7    SOLE VOTING POWER
             None

     8    SHARED VOTING POWER
             3,651,503

     9    SOLE DISPOSITIVE POWER
             None

     10   SHARED DISPOSITIVE POWER
             3,651,503

11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
       3,651,503 (See Item 5 herein)

12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
     (See Instructions)               [ ]

13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
       7.82%

14   TYPE OF REPORTING PERSON (See Instructions)
       PN

<PAGE>

CUSIP No.  05379P205

1    NAME OF REPORTING PERSONS
     Wexford Special Situations 1996 Institutional, LP
     S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS
     (Intentionally Omitted)

2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)
          (a)  [x]
          (b)  [ ]

3    SEC USE ONLY

4    SOURCE OF FUNDS (See Instructions)
          OO

5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS
     2(d) OR 2(e)                    [ ]

6     CITIZENSHIP OR PLACE OF ORGANIZATION
          Delaware

NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON WITH

     7    SOLE VOTING POWER
             None

     8    SHARED VOTING POWER
             670,040

     9    SOLE DISPOSITIVE POWER
             None

     10   SHARED DISPOSITIVE POWER
             670,040

11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     670,040(See Item 5 herein)

12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
     (See Instructions)                [ ]

13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
        1.43%

14   TYPE OF REPORTING PERSON (See Instructions)
        PN

<PAGE>

CUSIP No.  05379P205

1    NAME OF REPORTING PERSONS
     Wexford Special Situations 1996 Limited
     S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS
     (Intentionally Omitted)

2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)
          (a)  [x]
          (b)  [ ]

3    SEC USE ONLY

4    SOURCE OF FUNDS (See Instructions)
          OO

5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS
     2(d) OR 2(e)                 [ ]

6     CITIZENSHIP OR PLACE OF ORGANIZATION
          Cayman Islands

NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON WITH

     7    SOLE VOTING POWER
              None

     8    SHARED VOTING POWER
              183,282

     9    SOLE DISPOSITIVE POWER
              None

     10   SHARED DISPOSITIVE POWER
              183,282

11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     183,282 (See Item 5 herein)

12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
     (See Instructions)              [ ]

13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
         .39%

14   TYPE OF REPORTING PERSON (See Instructions)
         CO

<PAGE>


CUSIP No.  05379P205

1    NAME OF REPORTING PERSONS
     Wexford-Euris Special Situations 1996, LP
     S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS
     (Intentionally Omitted)

2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)
          (a)  [x]
          (b)  [ ]

3    SEC USE ONLY

4    SOURCE OF FUNDS (See Instructions)
     OO

5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS
     2(d) OR 2(e)              [ ]

6.     CITIZENSHIP OR PLACE OF ORGANIZATION
          Delaware

NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON WITH

     7    SOLE VOTING POWER
              None

     8    SHARED VOTING POWER
              933,814

     9    SOLE DISPOSITIVE POWER
              None

     10   SHARED DISPOSITIVE POWER
              933,814

11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     933,814 (See Item 5 herein)

12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
     (See Instructions)            [ ]

13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
          2%

14   TYPE OF REPORTING PERSON (See Instructions)
          PN

<PAGE>

CUSIP No.  05379P205

1    NAME OF REPORTING PERSONS
     Wexford Management LLC
     S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS
     (Intentionally Omitted)

2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)
          (a)  [x]
          (b)  [ ]

3    SEC USE ONLY

4    SOURCE OF FUNDS (See Instructions)
          AF

5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS
     2(d) OR 2(e)              [ ]

6.   CITIZENSHIP OR PLACE OF ORGANIZATION
         Connecticut

NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON WITH

     7    SOLE VOTING POWER
              None

     8    SHARED VOTING POWER
              5,438,639

     9    SOLE DISPOSITIVE POWER
              None

     10   SHARED DISPOSITIVE POWER
              5,438,639

11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     5,438,639(See Item 5 herein)

12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
     (See Instructions)           [ ]

13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
         11.64%

14   TYPE OF REPORTING PERSON (See Instructions)
         OO

<PAGE>


CUSIP No.  05379P205

1    NAME OF REPORTING PERSONS
     Wexford Advisors, LLC
     S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS
     (Intentionally Omitted)

2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)
          (a)  [x]
          (b)  [ ]

3    SEC USE ONLY

4    SOURCE OF FUNDS (See Instructions)
          AF

5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS
     2(d) OR 2(e)                    [ ]

6    CITIZENSHIP OR PLACE OF ORGANIZATION
         Delaware

NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON WITH

     7    SOLE VOTING POWER
              None

     8    SHARED VOTING POWER
              4,504,825

     9    SOLE DISPOSITIVE POWER
              None

     10   SHARED DISPOSITIVE POWER
              4,504,825

11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     4,504,825 (See Item 5 herein)

12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
     (See Instructions)              [ ]

13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
         9.64%

14   TYPE OF REPORTING PERSON (See Instructions)
         OO

<PAGE>

CUSIP No.  05379P205

1    NAME OF REPORTING PERSONS
     Wexford Euris Advisors, L.L.C.
     S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS
     (Intentionally Omitted)

2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)
          (a)  [x]
          (b)  [ ]

3    SEC USE ONLY

4    SOURCE OF FUNDS (See Instructions)
          AF

5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS
     2(d) OR 2(e)                   [ ]

6    CITIZENSHIP OR PLACE OF ORGANIZATION
          Delaware

NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON WITH

     7    SOLE VOTING POWER
              None

     8    SHARED VOTING POWER
              933,814

     9    SOLE DISPOSITIVE POWER
              None

     10   SHARED DISPOSITIVE POWER
              933,814

11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     933,814 (See Item 5 herein)

12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
     (See Instructions)            [ ]

13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
         2%

14   TYPE OF REPORTING PERSON (See Instructions)
         OO

<PAGE>

CUSIP No.  05379P205

1    NAME OF REPORTING PERSONS
     Charles E. Davidson
     S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS
     (Intentionally Omitted)

2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)
          (a)  [x]
          (b)  [ ]

3    SEC USE ONLY

4    SOURCE OF FUNDS (See Instructions)
          AF

5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS
     2(d) OR 2(e)                     [ ]

6    CITIZENSHIP OR PLACE OF ORGANIZATION
          United States of America

NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON WITH

     7    SOLE VOTING POWER
              None

     8    SHARED VOTING POWER
              5,438,639

     9    SOLE DISPOSITIVE POWER
              None

     10   SHARED DISPOSITIVE POWER
              5,438,639

11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     5,438,639 (See Item 5 herein)

12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
     (See Instructions)         [ ]

13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
         11.64%

14   TYPE OF REPORTING PERSON (See Instructions)
         IN
<PAGE>

CUSIP No.  05379P205

1    NAME OF REPORTING PERSONS
     Joseph M. Jacobs
     S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS
     (Intentionally Omitted)

2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions)
          (a)  [x]
          (b)  [ ]

3    SEC USE ONLY

4    SOURCE OF FUNDS (See Instructions)
          AF

5   CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS
    2(d) OR 2(e)                     [ ]

6    CITIZENSHIP OR PLACE OF ORGANIZATION 
          United States of America

NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON WITH

     7    SOLE VOTING POWER
              None

     8    SHARED VOTING POWER
              5,438,639

     9    SOLE DISPOSITIVE POWER
              None

     10   SHARED DISPOSITIVE POWER
              5,438,639

11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     5,438,639 (See Item 5 herein)

12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
     (See Instructions)             [ ]

13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
          11.64%

14   TYPE OF REPORTING PERSON (See Instructions)
          IN
<PAGE>

Item 1.   Security and Issuer.

    The class of securities to which this statement relates is the common stock,
without par value (the "Common Stock"), of Aviva Petroleum Inc. ("Aviva"). Aviva
is a Texas corporation with principal  executive offices at 8235 Douglas Avenue,
Suite 400, Dallas, Texas 75225.

Item 2.   Identity and Background.

     (a) This  statement is being filed by (i) Wexford Special  Situations 1996,
LP,  a  Delaware  limited  partnership,  and  Wexford  Special  Situations  1996
Institutional,  LP, a Delaware limited partnership  (collectively,  the "Special
Funds,"),  (ii)  Wexford  Special  Situations  1996  Limited,  a Cayman  Islands
corporation ("Wexford Cayman"), (iii) Wexford-Euris Special Situations 1996, LP,
a Delaware limited partnership (the "Euris Fund"), (iv) Wexford Management  LLC,
a Connecticut  limited liability  company ("Wexford  Management") and investment
advisor to the Special  Funds and the Euris Fund and  investment  subadvisor  to
Wexford Cayman, (v) Wexford Advisors, LLC, a Delaware limited liability company,
the sole  general  partner of the Special  Funds and the  investment  advisor to
Wexford Cayman (the "Special  General  Partner"),  (vi) Wexford Euris  Advisors,
LLC, a Delaware  limited  liability  company and the sole general partner of the
Euris Fund (the "Euris General  Partner"),  (the above entities are collectively
the "Reporting Entities") (vii) Charles E. Davidson and (viii) Joseph M.  Jacobs
(the   individuals  and   Reporting   Entities  in (i) - (viii) individually,  a
"Reporting  Person" and collectively,  the "Reporting  Persons") with respect to
shares of Common Stock beneficially owned by the Reporting Persons.

     (b)  The principal business and office address for the Reporting Persons is
c/o  Wexford  Management  LLC,  411  West  Putnam Avenue, Greenwich, Connecticut
06830.

     (c)  The principal business of the Reporting Persons is investments.

     Wexford   Management  is  an  Investment Advisor to the Reporting Entitles.
Wexford Management also serves  as investment  manager  or  sub-advisor  to  the
members of Wexford Advisors, LLC and Wexford Euris Advisors, LLC.

     Charles  E.  Davidson  is  chairman, a  managing  member  and a controlling
member  of  Wexford Management.   Mr.  Davidson also  is  a  controlling  person
or  an  investor  in a number of private companies, including certain members of
the Reporting Entities and their controlling entities. Mr. Davidson is a citizen
of the United States.

     Joseph  M.  Jacobs  is a president, a managing   member  and  a controlling
member of Wexford Management.  Mr. Jacobs also is  a controlling  person  or  an
investor in a number  of  private  companies,  including  certain members of the
Reporting Entities and their controlling persons.

<PAGE>

     (d)  None of the  Reporting  Persons has during  the  last  five years been
convicted  in  a  criminal  proceeding  (excluding traffic violations or similar
misdemeanors).

     (e)  None  of  the  Reporting  Persons  was a party to a  civil  proceeding
of  a  judicial or administrative body of competent jurisdiction and as a result
of  such  proceeding  was  or  is  subject  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  Special  Funds,  Wexford  Cayman  and  the  Euris Fund  purchased  in
privately negotiated transactions conducted on January 6, 1997, January 27, 1997
and February 19, 1997, 9 and 1/2% Convertible  Subordinated Debentures of Garnet
Resources  Corporation  ("Garnet")  due December 1998 (the  "Debentures")  in an
aggregate  principal  amount of  $6,330,000.  Pursuant to a  Debenture  Purchase
Agreement  ("Debenture Purchase Agreement") dated as of June 24, 1998 and a Plan
of Merger  effective as of October 28, 1998 (the "Merger"),  the Debentures have
all been exchanged for Common Stock of Aviva.  The Debenture  holders  received,
pursuant  to the  Debenture  Purchase  Agreement,  approximately  .859 shares of
Common Stock for every one dollar principal amount of Debentures.  In aggregate,
the Reporting  Persons  received  5,438,639  shares of Common Stock of Aviva for
$6,330,000 principal amount of Debentures.

    The  Special  Funds,  Wexford  Cayman  and  the  Euris  Fund   received  the
following number of shares of Common Stock in exchange for their Debentures. The
cost of the Debentures,  the date of initial purchase of the Debentures, and the
number  of  shares  of  Common  Stock  of Aviva  received  in  exchange  for the
Debentures are set forth below: (rounded off to the nearest whole share)
<TABLE>
<CAPTION>

                         Principal
                         Amount of                                             Aviva
                         Debentures          Date of                          Common
                         Exchanged          Purchase         Cost         Stock Received

<S>                      <C>                <C>           <C>               <C>
Wexford Special
Situations 1996,
L.P.                     $3,021,300         01/06/97      $1,576,657        2,595,855
                            221,562         01/27/97      $  117,025          190,363
                          1,007,100         02/19/97      $  551,820          865,285
                         ----------                                         ---------
  Sub-total              $4,249,962                                         3,651,503

Wexford Special
Situations 1996
Institutional, LP        $  554,400         01/06/97      $  289,312          476,332
                             40,656         01/27/97      $   21,473           34,931
                            184,800         02/19/97      $  101,258          158,777
                         ----------                                           -------
  Sub-total              $  779,856                                           670,040

Wexford Special
Situations
1996 Limited             $  151,650         01/06/97      $   79,138          130,295
                             11,121         01/27/97      $    5,873            9,555
                             50,550         02/19/97      $   27,698           43,432
                         ----------                                           -------
 Sub-total               $  213,321                                           183,282
</TABLE>


<PAGE>
<TABLE>
<CAPTION>
                         Principal
                         Amount of                                             Aviva
                         Debentures          Date of                          Common
                         Exchanged          Purchase         Cost         Stock Received

<S>                      <C>                <C>            <C>              <C> 
Wexford Euris Special
 Situations 1996, LP     $  772,650         01/06/97       $  403,205         663,849
                             56,661         01/27/97       $   29,927          48,682
                            257,550         02/19/97       $  141,120         221,283
                         ----------                                           -------
 Sub-total               $1,086,861                                           933,814
</TABLE>

Aggregate No. of Common Stock received in exchange for Debentures:     5,438,639

Item 4.   Purpose of Transaction.

     The Debentures  acquired by the Special  Funds,  the Euris Fund and Wexford
Cayman  were  exchanged  for Common  Stock of Aviva  pursuant  to the  Debenture
Purchase  Agreement and said exchange was effected in connection with the Merger
of Garnet into Aviva which became  effective on October 28, 1998. The definitive
Joint Proxy  Statement and Prospectus  was  filed with the S.E.C.  on October 9,
1998 (the "Joint Proxy  Statement and  Prospectus").  The shares of Common Stock
issued pursuant to the Debenture Purchase Agreement were not registered pursuant
to the above mentioned Joint Proxy Statement and Prospectus.

     The  Reporting   Persons  are  holding  the  shares  of  Common  Stock  for
investment.  The Reporting  Persons intend to review on a continuing basis their
investment  in Aviva and may,  depending on the business and prospects of Aviva,
market  conditions and other  investment  considerations,  determine to purchase
additional  shares of Common Stock,  for  investment,  or decrease or dispose of
their interest in Aviva, at such prices and terms and in such manner as they may
deem advisable. While the Reporting Persons have no present intention to acquire
additional  shares of Common Stock,  the Reporting  Persons reserve the right to
purchase additional shares of Common Stock based on the factors set forth above.

     Except as set forth above,  none of the Reporting Persons have any plans or
proposals which relate to or would result in any  transactions or actions listed
in clauses (a) through (j) of Item 4 of Schedule 13D.

Item 5.   Interest in Securities of the Issuer.

     As a result of the  acquisition  of the Common  Stock upon  exchange of the
Debentures,   the  Special  Funds,   the  Euris  Fund  and  Wexford  Cayman  own
beneficially in the aggregate  approximately 11.64% of the outstanding shares of
Common  Stock  (on the  basis of  46,719,703  shares  of  Common  Stock of Aviva
outstanding on as of the Closing Date of the Merger,  as more fully set forth in
the  Joint  Proxy  Statement  and  Prospectus, according to Rule 13d-3 under the
Exchange Act).  Set  forth  below  is  a  summary  for  each  of  the  Reporting
Persons of their beneficial ownership of the Common Stock.

     A.   Wexford Special Situations 1996, LP

          (a)  Aggregate number of shares of Common Stock
               beneficially owned: 3,651,503
                  Percentage: 7.82%.
          (b)  1. Sole power to vote or to direct  vote:  -0-
               2. Shared power to vote or to direct vote:
                  3,651,503
               3. Sole power to dispose or to direct the
                  disposition:  -0-
               4. Shared  power  to  dispose  or to  direct  the
                  disposition:  3,651,503
          (c)  Other  than as  reported  in Item 2 and 3 above,  there were
               no transactions  by the  Reporting  Persons  during 


<PAGE>

               the past sixty (60) days.
          (d)  Each of the  Reporting  Persons may be deemed to
               have the right to  receive or the power to direct
               the  receipt  of  dividends from, or proceeds from
               the sale of, the Common Stock.
          (e)  Not applicable.

     B.   Wexford Special Situations 1996 Institutional, LP

          (a)  Aggregate number of shares of Common Stock
               beneficially owned: 670,040
                 Percentage: 1.43%
          (b)  1. Sole power to vote or to direct vote:  -0-
               2. Shared power to vote or to direct vote:
                  670,040
               3. Sole power to dispose or to direct the
                  disposition:  -0-
               4. Shared  power to dispose  or to direct the
                  disposition: 670,040
          (c)  Other than as  reported  in Items 2 and 3 above,  there were
               no transactions  by the  Reporting  Persons  during
               the past sixty (60) days.
          (d)  Each of the  Reporting  Persons may be deemed to
               have the right to  receive or the power to direct
               the  receipt  of  dividends from, or proceeds from
               the sale of, the Common Stock.
          (e)  Not applicable.

     C.   Wexford Special Situations 1996 Limited

          (a)  Aggregate number of shares of Common Stock
               beneficially owned: 183,282
                 Percentage:  .39%
          (b)  1. Sole power to vote or to direct vote:  -0-
               2. Shared power to vote or to direct vote:
                  183,282
               3. Sole power to dispose or to direct the
                  disposition:  -0-
               4. Shared  power to dispose  or to direct the
                  disposition: 183,282
          (c)  Other than as  reported  in Items 2 and 3 above,  there were
               no transactions  by the  Reporting  Persons  during
               the past sixty (60) days.
          (d)  Each of the  Reporting  Persons may be deemed to 
               have the right to  receive or the power to direct
               the  receipt  of  dividends from, or proceeds from
               the sale of, the Common Stock
          (e)  Not applicable.

     D.   Wexford-Euris Special Situations 1996, LP

          (a)  Aggregate number of shares of Common Stock
               beneficially owned: 933,814
                 Percentage: 2%
          (b)  1. Sole power to vote or to direct vote:  -0-


<PAGE>

               2. Shared power to vote or to direct vote:
                  933,814
               3. Sole power to dispose or to direct the
                  disposition:  -0-
               4. Shared  power to dispose or to direct the  
                  disposition: 933,814
          (c)  Other  than  as  reported  in  item  3  above,  there  were 
               no transactions  by the  Reporting  Persons  during
               the past sixty (60) days.
          (d)  Each of the  Reporting  Persons may be deemed to 
               have the right to  receive or the power to direct  
               the  receipt  of  dividends from, or proceeds from
               the sale of, the Common Stock.
          (e)  Not applicable.


     E.   Wexford Management LLC

          (a)  Aggregate number of shares of Common Stock
               beneficially owned: 5,438,639
                 Percentage: 11.64%
          (b)  1. Sole power to vote or to direct vote:  -0-
               2. Shared power to vote or to direct vote:
                  5,438,639
               3. Sole power to dispose or to direct the
                  disposition:  -0-
               4. Shared  power to dispose or to direct the  
                  disposition: 5,438,639
          (c)  Other  than  as  reported  in  item  3  above,  there  were  
               no transactions  by the  Reporting  Persons  during
               the past sixty (60) days.
          (d)  Each of the  Reporting  Persons may be deemed 
               to have the right to  receive or the power to direct 
               the  receipt  of  dividends from, or proceeds from
               the sale of, the Common Stock.
          (e)  Not applicable.

     F.   Wexford Advisors, LLC

          (a)  Aggregate number of shares of Common Stock
               beneficially owned: 4,504,825
                 Percentage: 9.64%
          (b)  1. Sole power to vote or to direct vote:  -0-
               2. Shared power to vote or to direct vote:
                  4,504,825
               3. Sole power to dispose or to direct the
                  disposition:  -0-
               4. Shared  power to dispose or to direct the  
                  disposition: 4,504,825
          (c)  Other  than  as  reported  in  Item  3  above,  there  were  
               no transactions  by the  Reporting  Persons  during 
               the past sixty (60) days.
          (d)  Each of the  Reporting  Persons may be deemed to
               have the right to  receive or the power to direct  
               the  receipt  of  dividends from, or proceeds from 
<PAGE>
 
               the sale of, the Common Stock.
          (e)  Not applicable.

     G.   Wexford-Euris Advisors, LLC

          (a)  Aggregate number of shares of Common Stock
               beneficially owned: 933,814
                 Percentage: 2%
          (b)  1. Sole power to vote or to direct vote:  -0-
               2. Shared power to vote or to direct vote:
                  933,814
               3. Sole power to dispose or to direct the
                  disposition:  -0-
               4. Shared  power to dispose or to direct the  
                  disposition: 933,814
          (c)  Other  than  as  reported  in  Item  3  above,  there  were  
               no transactions  by the  Reporting  Persons  during 
               the past sixty (60) days.
          (d)  Each of the  Reporting  Persons may be deemed to 
               have the right to  receive or the power to direct  
               the  receipt  of  dividends from, or proceeds from 
               the sale of, the Common Stock.
          (e)  Not applicable.

     H.   Charles E. Davidson

          (a)  Aggregate number of shares of Common Stock
               beneficially owned: 5,438,639
                Percentage: 11.64%
          (b)  1. Sole power to vote or to direct vote:  -0-
               2. Shared power to vote or to direct vote:
                  5,438,639
               3. Sole power to dispose or to direct the
                  disposition:  -0-
               4. Shared  power to dispose or to direct the  
                  disposition:  5,438,639
          (c)  Other  than  as  reported  in  item  3  above,  there  were  
               no transactions  by the  Reporting  Persons  during
               the past sixty (60) days.
          (d)  Each of the  Reporting  Persons may be deemed to 
               have the right to  receive or the power to direct  
               the  receipt  of  dividends from, or proceeds from 
               the sale of, the Common Stock.
          (e)  Not applicable.

     I.   Joseph M. Jacobs

          (a)  Aggregate number of shares of Common Stock
               beneficially owned: 5,438,639
                 Percentage: 11.64%
          (b)  1. Sole power to vote or to direct vote:  -0-
               2. Shared power to vote or to direct vote:
                  5,438,639
               3. Sole power to dispose or to direct the
                  disposition:  -0-
<PAGE>

               4. Shared  power to dispose  or to direct the  
                  disposition: 5,438,639
          (c)  Other  than  as  reported  in  item  3  above,  there  were  
               no transactions  by the  Reporting  Persons  during
               the past sixty (60) days.
          (d)  Each of the  Reporting  Persons may be deemed to 
               have the right to  receive or the power to direct
               the  receipt  of  dividends from, or proceeds from 
               the sale of, the Common Stock.
          (e)  Not applicable.

     The  Special  General  Partner  may,  by reason  of its  status as the sole
general  partner of the Special Funds,  be deemed to own  beneficially  (as that
term is defined in Rule 13d-3 under the Exchange  Act) the Common Stock of which
the Special Funds possess beneficial ownership.

     Wexford  Management  may, by reason of its status as investment  manager to
the Special Funds and the Euris Fund and as sub-advisor  to the Special  General
Partner on behalf of Wexford Cayman, be deemed to own beneficially (as that term
is defined in Rule 13d-3 under the  Exchange  Act) the Common Stock of which the
Special Funds, the Euris Fund and Wexford Cayman possess beneficial ownership.

     The Special General Partner  may, by reason of its status as the investment
advisor to Wexford Cayman, be deemed  to  own  beneficially  (as  that  term  is
defined in Rule 13d-3 under the Exchange Act) the Common Stock of which  Wexford
Cayman possesses beneficial ownership.
<PAGE>

     The Euris General  Partner may, by reason of its status as the sole general
partner  of the  Euris  Fund,  be deemed  to own  beneficially  (as that term is
defined  in Rule 13d-3  under the  Exchange  Act) the Common  Stock of which the
Euris Fund possesses beneficial ownership.

     Charles E. Davidson may, by reason of his status as a control person of the
Special General Partner,  the Euris General Partner and Wexford  Management,  be
deemed to own  beneficially  (as that term is defined  in Rule  13d-3  under the
Exchange  Act) the Common Stock of which the Special  Funds,  the Euris Fund and
Wexford Cayman possess beneficial ownership.

     Joseph M. Jacobs  may,  by reason of his status as a control  person of the
Special General Partner,  the Euris General Partner and Wexford  Management,  be
deemed to own  beneficially  (as that term is defined  in Rule  13d-3  under the
Exchange  Act) the Common Stock of which the Special  Funds,  the Euris Fund and
Wexford Cayman possess beneficial ownership.

     (b) (i) Charles E. Davidson,  Joseph M. Jacobs,  Wexford Management and the
Special  General Partner share the power to vote and to dispose of the shares of
Common Stock beneficially owned directly by the Special Funds;

     (ii) Charles E.  Davidson,  Joseph M. Jacobs,  Wexford  Management  and the
Euris  General  Partner  share the power to vote and to dispose of the shares of
Common Stock beneficially owned directly by the Euris Fund; and

     (iii) The Special  General  Partner  shares  with  Wexford  Management  and
Wexford  Cayman the power to vote and to  dispose of the shares of Common  Stock
beneficially owned directly by Wexford Cayman.

Item 6. Contracts, Arrangements, Understandings or
        Relationships with Respect to Securities of the Issuer.
        None.  See Items 2 through 5 hereof.

Item 7. Material to be Filed as Exhibits.

     1. Exhibit I  -  Agreement pursuant to Rule 13d-(f)(1)(iii), filed herewith

     2. Exhibit II  -  Debenture  Purchase  Agreement   (incorporated  by
reference  to  Exhibit  2.2 to  Registration  Statement  on Form S-4  (Reg.  No.
333-58061) filed by Aviva with the Commission on June 30, 1998)


<PAGE>


Signature


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




Dated: November 12, 1998

             WEXFORD SPECIAL SITUATIONS 1996, LP
             By: Wexford Advisors, LLC,
                 its general partner


                     By: /s/ Arthur H. Amron
                         ---------------------------
                     Name:  Arthur H. Amron
                     Title: Vice President



             WEXFORD SPECIAL SITUATIONS
              1996 INSTITUTIONAL, LP
             By:  Wexford Advisors, LLC,
                  its general partner


                      By: /s/ Arthur H. Amron
                          ---------------------------
                      Name:  Arthur H. Amron
                      Title: Vice President



              WEXFORD-EURIS SPECIAL SITUATIONS
               1996, LP
              By:  Wexford-Euris Advisors, LLC,
                   its general partner


                       By: /s/ Arthur H. Amron
                           ---------------------------
                       Name:  Arthur H. Amron
                       Title:    Vice President



               WEXFORD SPECIAL SITUATIONS
                1996 LIMITED
               By:  Wexford Advisors, LLC

                       By: /s/ Arthur H. Amron
                           -----------------------------
                       Name:  Arthur H. Amron
                       Title: Vice President
<PAGE>

                WEXFORD MANAGEMENT, LLC


                        By:  /s/ Arthur H. Amron
                             ----------------------------
                        Name:  Arthur H. Amron
                        Title: Senior Vice President



                WEXFORD ADVISORS, LLC


                         By:   /s/ Arthur H. Amron
                              ---------------------------
                         Name:  Arthur H. Amron
                         Title: Vice President



                WEXFORD EURIS ADVISORS, LLC


                          By:  /s/ Arthur H. Amron
                               ----------------------------
                          Name:  Arthur H. Amron
                          Title: Vice President



                /s/ Charles E. Davidson
                -------------------------------------------
                Charles E. Davidson


                /s/ Joseph M. Jacobs
                -------------------------------------------
                Joseph M. Jacobs



<PAGE>


                         EXHIBIT INDEX


     1.  Exhibit I - Agreement pursuant to Rule 13d-1(f)(1)(iii), filed herewith

     2.  Exhibit II - Debenture Purchase Agreement dated as of June 24,
         1998 between  Aviva  Petroleum,  Inc.  and the Holders of the  
         Debentures  named therein.  (Incorporated  by  reference  to Exhibit
         2.2 to the Registration Statement  on Form  S-4  (Reg.  No.  333-58061)
         filed  by  Aviva  with the Commission June 30, 1998.)


                                                            EXHIBIT I



     Pursuant to Rule  13d-1(f)(1)(iii) of Regulation 13D-G of the General Rules
and Regulations of the Securities and Exchange  Commission  under the Securities
Exchange Act of 1934, as amended,  the  undersigned  agree that the statement to
which  this  Exhibit  is  attached  is  filed on  behalf  of each of them in the
capacities set forth below.


           WEXFORD SPECIAL SITUATIONS 1996, LP
           By:  Wexford Advisors, LLC,
                its general partner


                By: /s/ Arthur H. Amron
                    -----------------------------
                Name:  Arthur H. Amron
                Title: Vice President



            WEXFORD SPECIAL SITUATIONS
             1996 INSTITUTIONAL, LP
            By:  Wexford Advisors, LLC,
                 its general partner


                By: /s/ Arthur H. Amron
                    ------------------------------
                Name:  Arthur H. Amron
                Title: Vice President



             WEXFORD-EURIS SPECIAL SITUATIONS
              1996, LP
             By:  Wexford-Euris Advisors, LLC,
                  its general partner


                 By: /s/ Arthur H. Amron
                     -------------------------------
                 Name:  Arthur H. Amron
                 Title: Vice President



              WEXFORD SPECIAL SITUATIONS
               1996 LIMITED
              By:  Wexford Advisors, LLC


                  By:  /s/ Arthur H. Amron
                      -------------------------------
                  Name:  Arthur H. Amron
                  Title: Vice President

<PAGE>

               WEXFORD MANAGEMENT, LLC


                   By: /s/ Arthur H. Amron
                      --------------------------------
                   Name:  Arthur H. Amron
                   Title: Senior Vice President



               WEXFORD ADVISORS, LLC


                    By: /s/ Arthur H. Amron
                        -------------------------------
                    Name:  Arthur H. Amron
                    Title: Vice President



                WEXFORD EURIS ADVISORS, LLC


                     By: /s/ Arthur H. Amron
                        --------------------------------
                     Name:  Arthur H. Amron
                     Title: Vice President




                /s/ Charles E. Davidson
                -----------------------------------------
                Charles E. Davidson


                /s/ Joseph M. Jacobs
                -----------------------------------------
                Joseph M. Jacobs



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