<PAGE>

               UNITED STATES SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549


                                   FORM 10-Q


 [ X ]      QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
                              EXCHANGE ACT OF 1934

            For the quarterly period ended    SEPTEMBER 30, 1999
                                           ------------------------

                                      OR

 [   ]    TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES
                              EXCHANGE ACT OF 1934

                   For the transition period from        to
                                                  ------    -------

                        Commission File Number  0-22258


                             AVIVA PETROLEUM INC.
            (Exact name of registrant as specified in its charter)

Texas                                                          75-1432205
(State or other jurisdiction of                             (I.R.S. Employer
incorporation or organization)                               Identification
                                                                 Number)

8235 Douglas Avenue,                                             75225
Suite 400, Dallas, Texas                                       (Zip Code)
(Address of principal executive offices)

                                (214) 691-3464
             (Registrant's telephone number, including area code)


Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months (or for such shorter period that the registrant was
required to file such reports), and (2) has been subject to such filing
requirements for the past 90 days.
                                                      Yes  X    No
                                                          ---     ---

Number of shares of Common Stock, no par value, outstanding at September 30,
1999, was 46,900,132 of which 25,383,690 shares of Common Stock were represented
by Depositary Shares.  Each Depositary Share represents five shares of Common
Stock held by a Depositary.
<PAGE>

PART I - FINANCIAL INFORMATION

Item 1. Financial Statements.
-----------------------------

                     AVIVA PETROLEUM INC. AND SUBSIDIARIES
                      Condensed Consolidated Balance Sheet
                    (in thousands, except number of shares)
                                  (unaudited)
<TABLE>
<CAPTION>
                                                                                         September 30,         December 31,
                                                                                             1999                 1998
                                                                                        ---------------      ---------------
<S>                                                                                     <C>                  <C>
ASSETS

Current assets:
 Cash and cash equivalents                                                               $          125       $        1,712
 Restricted cash                                                                                      4                  417
 Accounts receivable                                                                              1,839                1,503
 Inventories                                                                                        771                  836
 Prepaid expenses and other                                                                          65                  627
                                                                                        ---------------      ---------------
   Total current assets                                                                           2,804                5,095
                                                                                        ---------------      ---------------

Property and equipment, at cost (note 4):
 Oil and gas properties and equipment (full cost method)                                         68,527               68,636
 Other                                                                                              523                  612
                                                                                        ---------------      ---------------
                                                                                                 69,050               69,248
   Less accumulated depreciation, depletion
     and amortization                                                                           (64,944)             (64,440)
                                                                                        ---------------      ---------------
                                                                                                  4,106                4,808
Other assets                                                                                      1,539                1,519
                                                                                        ---------------      ---------------
                                                                                         $        8,449       $       11,422
                                                                                        ===============      ===============

LIABILITIES AND STOCKHOLDERS' DEFICIT

Current liabilities:
 Current portion of long term debt (note 5)                                              $       14,495       $       14,805
 Accounts payable                                                                                 3,099                5,526
 Accrued liabilities                                                                                578                  308
                                                                                        ---------------      ---------------
   Total current liabilities                                                                     18,172               20,639
                                                                                        ---------------      ---------------

Gas balancing obligations and other                                                               1,867                1,866
Stockholders' deficit:
 Common stock, no par value, authorized 348,500,000 shares;
   issued 46,900,132 shares at September 30, 1999 and
   46,700,132 shares at December 31, 1998                                                         2,345                2,335
 Additional paid-in capital                                                                      34,855               34,862
 Accumulated deficit/*/                                                                         (48,790)             (48,280)
                                                                                        ---------------      ---------------
   Total stockholders' deficit                                                                  (11,590)             (11,083)

Commitments and contingencies (note 7)
                                                                                        ---------------      ---------------
                                                                                         $        8,449       $       11,422
                                                                                        ===============      ===============

/*/  Accumulated deficit of $70,057 was eliminated at December 31, 1992 in connection with a quasi-reorganization.
</TABLE>

See accompanying notes to condensed consolidated financial statements.

                                       2
<PAGE>

                     AVIVA PETROLEUM INC. AND SUBSIDIARIES
                Condensed Consolidated Statement of Operations
                     (in thousands, except per share data)
                                  (unaudited)

<TABLE>
<CAPTION>


                                                       Three Months Ended        Nine Months Ended
                                                          September 30,             September 30,

                                                         1999      1998             1999      1998
                                                       --------  --------         --------  ---------
<S>                                                    <C>      <C>             <C>        <C>
Oil and gas sales                                      $  1,955  $    518         $  4,714  $   2,578
                                                       --------  --------         --------  ---------

Expense:
 Production                                                 918       707            2,697      2,222
 Depreciation, depletion and amortization                   242       239              862      1,413
 Write-down of oil and gas properties (note 4)                -         -                -      4,725
 General and administrative                                 247       222              926        882
 Provision for (recovery of) losses on accounts
   receivable                                               (13)        -             (105)         -
 Severance                                                    -         -               62          -
                                                       --------  --------         --------  ---------

   Total expense                                          1,394     1,168            4,442      9,242
                                                       --------  --------         --------  ---------

Other income (expense):
 Interest and other income (expense), net (note 6)          122       165              299        936
 Interest expense                                          (326)     (168)            (900)      (488)
                                                       --------  --------         --------  ---------

   Total other income (expense)                            (204)       (3)            (601)       448
                                                       --------  --------         --------  ---------

Earnings (loss) before income taxes                         357      (653)            (329)    (6,216)

Income taxes                                                 54        60              181        226
                                                       --------  --------         --------  ---------

     Net earnings (loss)                               $    303  $   (713)        $   (510) $  (6,442)
                                                       ========  ========         ========  =========

Weighted average common shares outstanding -
 basic and diluted                                       46,900    31,726           46,784     31,565
                                                       ========  ========         ========  =========

Basic and diluted net earnings (loss) per
 common share                                          $    .01  $   (.02)        $  (.01)  $    (.20)
                                                       ========  ========         =======   =========

</TABLE>

See accompanying notes to condensed consolidated financial statements.

                                       3
<PAGE>

                     AVIVA PETROLEUM INC. AND SUBSIDIARIES
                Condensed Consolidated Statement of Cash Flows
                                (in thousands)
                                  (unaudited)



                                                              Nine Months Ended
                                                                September 30,

                                                               1999       1998
                                                              ------     ------

Net loss                                                     $  (510) $  (6,442)
Adjustments to reconcile net loss to net cash
 provided by operating activities:
  Depreciation, depletion and amortization                       862      1,413
  Write-down of oil and gas properties                             -      4,725
  Changes in working capital and other                        (1,713)       484
                                                              ------     ------

   Net cash provided by (used in) operating activities        (1,361)       180
                                                              ------     ------

Cash flows from investing activities:
  Property and equipment expenditures                           (140)      (900)
  Other                                                           38       (226)
                                                              ------     ------

   Net cash used in investing activities                        (102)    (1,126)
                                                              ------     ------

Cash flows from financing activities:
  Proceeds from long term debt                                     -        760
  Principal payments on long term debt                          (300)      (250)
                                                              ------     ------

   Net cash provided by (used in) financing activities          (300)       510
                                                              ------     ------


Effect of exchange rate changes on cash and
   cash equivalents                                              176         24
                                                              ------     ------

Net decrease in cash and cash equivalents                     (1,587)      (412)
Cash and cash equivalents at beginning of the period           1,712        690
                                                              ------     ------

Cash and cash equivalents at end of the period               $   125  $     278
                                                              ======     ======



See accompanying notes to condensed consolidated financial statements.

                                       4
<PAGE>

                     AVIVA PETROLEUM INC. AND SUBSIDIARIES
           Condensed Consolidated Statement of Stockholders' Deficit
                    (in thousands, except number of shares)
                                  (unaudited)



<TABLE>
<CAPTION>


                                     Common Stock
                                  ------------------
                                                    Additional                    Total
                                    Number            Paid-in   Accumulated    Stockholders'
                                  of Shares   Amount  Capital     Deficit        Deficit
                                  ----------  ------  --------  ------------  --------------
<S>                               <C>         <C>     <C>       <C>           <C>

Balances at December 31, 1998     46,700,132  $2,335  $ 34,862   $   (48,280)  $     (11,083)

Issuance of common stock
  pursuant to investment
  banking agreement                  200,000      10        (7)            -               3

Net loss                                   -       -         -          (510)           (510)
                                  ----------  ------  --------   -----------  --------------

Balances at September 30, 1999    46,900,132  $2,345  $ 34,855    $  (48,790)  $     (11,590)
                                  ==========  ======  ========   ===========  ==============

</TABLE>


See accompanying notes to condensed consolidated financial statements.

                                       5
<PAGE>

                     AVIVA PETROLEUM INC. AND SUBSIDIARIES
             Notes to Condensed Consolidated Financial Statements
                                  (unaudited)

1. General

   The condensed consolidated financial statements of Aviva Petroleum Inc. and
   subsidiaries (the "Company" or "Aviva") included herein have been prepared by
   the Company without audit, pursuant to the rules and regulations of the
   Securities and Exchange Commission. Certain information and footnote
   disclosures normally included in financial statements prepared in accordance
   with generally accepted accounting principles have been condensed or omitted
   pursuant to such rules and regulations, although the Company believes that
   the disclosures contained herein are adequate to make the information
   presented not misleading. These condensed consolidated financial statements
   should be read in conjunction with the Company's prior audited yearly
   financial statements and the notes thereto, included in the Company's latest
   annual report on Form 10-K.

   In the opinion of the Company, all adjustments, consisting of normal
   recurring accruals, necessary to present fairly the information in the
   accompanying financial statements have been included. The results of
   operations for such interim periods are not necessarily indicative of the
   results for the full year. Previously reported amounts have been reclassified
   to conform to current period presentation.

   The Company's condensed consolidated financial statements have been presented
   on a going concern basis which contemplates the realization of assets and the
   satisfaction of liabilities in the normal course of business. As discussed in
   note 2 below, there is substantial doubt about the Company's ability to
   continue as a going concern. The condensed consolidated financial statements
   do not include any adjustments relating to the recoverability and
   classification of asset carrying amounts or the amount and classification of
   liabilities that might result should the Company be unable to continue as a
   going concern.

2. Liquidity

   During the last quarter of calendar year 1997 and throughout calendar year
   1998, world oil prices declined dramatically. This decline in oil prices was
   particularly severe in Colombia. Colombian oil prices, during the twenty-four
   month period ended December 31, 1998, fell from a high of $22.71 per barrel
   in January 1997 to $7.50 per barrel in December 1998. Whereas the sale price
   for crude oil from the Santana contract averaged $19.82 per barrel in 1996
   and $17.39 per barrel in 1997, the sale price averaged $10.31 per barrel
   during calendar year 1998 and $13.82 per barrel during the first nine months
   of 1999.

   These price declines have materially and adversely affected the results of
   operations and the financial position of the Company. During the years ended
   December 31, 1998, 1997 and 1996, the Company reported net losses of $17.1
   million, $22.5 million and $0.9 million, respectively, and declining amounts
   of net cash provided by (used in) operating activities of $(0.05) million,
   $1.7 million and $8.9 million, respectively. The Company recorded an
   additional net loss of $0.5 million for the nine-month period ended September
   30, 1999. The Company's stockholders' deficit was approximately $11.6 million
   as of September 30, 1999.

   Although world oil prices have substantially recovered in recent months, the
   Company remains highly leveraged with $14.5 million in current debt as of
   September 30, 1999, pursuant to bank credit facilities with ING (U.S.)
   Capital Corporation ("ING Capital"), the U.S. Overseas Private Investment
   Corporation ("OPIC") and Chase Bank of Texas, N.A. ("Chase"), as more fully
   described in note 5.

                                       6
<PAGE>

                     AVIVA PETROLEUM INC. AND SUBSIDIARIES
             Notes to Condensed Consolidated Financial Statements
                            (unaudited) (continued)

  The Company is not in compliance with various covenants under the bank credit
  facilities nor is it in compliance with the minimum escrow balance required
  thereunder.  As a result, the lender has the right to accelerate payment on
  the debt and, therefore, the Company has classified all long-term debt as
  current in the September 30, 1999 consolidated balance sheet.  Furthermore,
  the Company was unable to pay the principal payment of $5.7 million due on
  April 30, 1999, and subsequent monthly principal payments of $281,250 (an
  aggregate of $7,106,250 through September 30, 1999). The Company has paid the
  related interest through June 30, 1999; however, interest due subsequent to
  this date has not been paid. Assuming no change in its capital structure, the
  Company will not have the financial resources to pay the future minimum
  monthly principal payments of $281,250 due through December 31, 2001.

  On February 22, 1999, the Company signed a letter of intent to merge with
  Sharpe Resources Corporation ("Sharpe"), a publicly traded oil and gas
  exploration and production company incorporated in Ontario, Canada.  As part
  of the merger arrangements, the Company's lenders (i.e., ING Capital, OPIC and
  Chase) had agreed in principle to cancel the Company's $14.6 million of then
  outstanding debt in exchange for a cash payment of $5 million, plus $3 million
  of preferred stock in the merged entity and 25% of the common shares to be
  issued to the Aviva shareholders.  On April 27, 1999, however, the merger
  discussions with Sharpe were terminated as a result of the inability of the
  parties to reach agreement on terms and conditions of the proposed merger.

  On May 19, 1999, the Company engaged Triumph Securities Corporation as an
  investment banker to assist in recapitalizing the Company with up to $10
  million for drilling, acquisitions and the purchase of the Company's
  outstanding bank debt. A recapitalization pursuant to this engagement was not
  achieved. On July 23, 1999, the Company terminated Triumph's engagement as the
  Company's investment banker.

  Management of the Company is currently in discussions with the Company's
  lenders concerning the conversion of the Company's outstanding bank debt,
  which currently is $14.5 million, into common stock of the Company.  Under
  management's most recent proposal, the outstanding debt and accrued interest
  thereon would be exchanged for 298 million newly issued common shares of the
  Company.  Following such an exchange, the lenders would own approximately 86%
  of the then outstanding shares of the Company and the Company's future cash
  flows would be available for working capital, drilling and acquisitions.
  Management believes this debt conversion can be achieved and will provide the
  Company with the liquidity necessary to continue operations and reposition the
  Company.

  While management of the Company is pursuing the debt conversion assiduously,
  its ability to effect such a conversion is dependent upon the Company's
  lenders, a matter that is beyond the control of the Company.  In particular,
  the Company's lenders must consent to waive the defaults of the Company under
  its bank credit facilities pending preparation, negotiation, execution and
  delivery of definitive debt conversion agreements.  The Company's lenders have
  not yet and may not ever agree to a conversion of the Company's debt.  If the
  Company is unable to consummate the debt conversion, then, in the absence of
  another business transaction, the Company cannot achieve compliance with nor
  make payments required by the bank credit facilities and, accordingly, the
  lenders could declare a default, accelerate all amounts outstanding, and
  attempt to realize upon the collateral securing the debt.  As a result of this
  uncertainty, management believes there is substantial doubt about the
  Company's ability to continue as a going concern.

                                       7
<PAGE>

                     AVIVA PETROLEUM INC. AND SUBSIDIARIES
             Notes to Condensed Consolidated Financial Statements
                            (unaudited) (continued)

3. Garnet Merger

   On October 28, 1998, the Company completed the merger of Garnet Resources
   Corporation ("Garnet") with one of the Company's subsidiaries. As a result of
   the merger, the Company now owns over 99% of the Colombian joint operations.
   Additionally, the Company now holds a 2% carried working interest in an oil
   and gas Petroleum Prospecting License in Papua New Guinea.

   The merger arrangements included Aviva refinancing Garnet's 99.24% owned
   subsidiary's net outstanding debt to Chase which is guaranteed by OPIC,
   issuing approximately 1.1 million and 12.9 million new Aviva common shares to
   Garnet shareholders and Garnet debenture holders, respectively, and canceling
   Garnet's $15 million of 9.5% subordinated debentures due December 21, 1998.
   (See note 5 for further details.)

   The merger was accounted for as a "purchase" of Garnet for financial
   accounting purposes with Aviva's subsidiary as the surviving entity. The
   purchase price of Garnet, approximately $9.9 million, consists of $2.4
   million related to the issuance of 14 million shares of Aviva's common stock
   at $0.167 per share plus merger costs and the assumption of approximately
   $6.0 million of net debt and $1.5 million of current and other liabilities.

   A summary of the assets acquired and liabilities assumed as of October 28,
   1998 follows (in thousands):

            Current assets                  $ 1,659
            Oil and gas properties            8,250
            Current liabilities              (1,169)
            Long term debt                   (5,954)
            Other liabilities                  (346)
                                            -------
       Fair value of net assets acquired    $ 2,440
                                            =======

   The following sets forth selected consolidated financial information for the
   Company on a pro forma basis for the nine-month period ended September 30,
   1998, assuming the Garnet merger had occurred on January 1, 1997. The
   following selected pro forma combined financial information is based on the
   historical consolidated statements of operations of Aviva and Garnet as
   adjusted to give effect to the merger using the purchase method of accounting
   for business combinations. In addition, the following selected pro forma
   combined financial information gives effect to the purchase of Garnet
   debentures by Aviva pursuant to the Debenture Purchase Agreement, the
   borrowing by Aviva of $15 million pursuant to the bank loans (as discussed in
   note 5) and the application of such funds to refinance Aviva's outstanding
   debt and the debt to Chase of a Garnet subsidiary (as discussed above). The
   following selected pro forma combined financial information may not
   necessarily reflect the financial condition or results of operations of Aviva
   that would actually have resulted had the merger occurred as of the date and
   for the period indicated or reflect the future results of operations of Aviva
   (in thousands, except per share amounts).

            Revenues                        $ 4,981
                                            =======
            Net loss                        $13,454
                                            =======
            Basic and diluted net loss
             per common share               $  (.29)
                                            =======

   The above pro forma net loss for the nine-month period ended September 30,
   1998 includes combined historical charges for ceiling write-downs of oil and
   gas producing properties of $9,853,000.

                                       8
<PAGE>

                     AVIVA PETROLEUM INC. AND SUBSIDIARIES
             Notes to Condensed Consolidated Financial Statements
                            (unaudited) (continued)

4. Property and Equipment

   Internal general and administrative costs directly associated with oil and
   gas property acquisition, exploration and development activities have been
   capitalized in accordance with the accounting policies of the Company. Such
   costs totaled $31,000 for the nine months ended September 30, 1999 and
   $32,000 for the nine months ended September 30, 1998.

   Unevaluated oil and gas properties totaling $550,000 and $532,000 at
   September 30, 1999 and December 31, 1998, respectively, have been excluded
   from costs subject to depletion. The Company capitalized interest costs of
   $36,000 and $9,000 for the nine-month periods ended September 30, 1999 and
   1998, respectively, on these properties.

   The Company recorded write-downs of $3,355,000 and $1,370,000 to the carrying
   amounts of its Colombian and U.S. oil and gas properties, respectively, as a
   result of ceiling test limitations on capitalized costs through September 30,
   1998. No such write-downs were required as of September 30, 1999. A future
   decrease in the prices the Company receives for its oil and gas production or
   downward reserve adjustments could result in a ceiling test write-down that
   is significant to the Company's operating results.

5. Long Term Debt

   On October 28, 1998, concurrently with the consummation of the Garnet merger,
   Neo Energy, Inc., an indirect subsidiary of the Company, and the Company
   entered into a Restated Credit Agreement with ING Capital. ING Capital, Chase
   and OPIC also entered into a Joint Finance and Intercreditor Agreement (the
   "Intercreditor Agreement") with the Company. ING Capital agreed to loan Neo
   Energy, Inc. an additional $800,000, bringing the total outstanding balance
   due ING Capital to $9,000,000. The outstanding balance due to Chase was paid
   down to $6,000,000 from the $6,350,000 balance owed by Garnet prior to the
   merger.

   The ING Capital loan and the Chase loan (the "Bank Credit Facilities") are
   guaranteed by the Company and its material domestic subsidiaries. Both loans
   are also secured by the Company's consolidated interest in the Santana
   contract and related assets in Colombia, a first mortgage on the United
   States oil and gas properties of the Company and its subsidiaries, a lien on
   accounts receivable of the Company and its subsidiaries, and a pledge of the
   capital stock of the Company's subsidiaries. The Chase loan is
   unconditionally guaranteed by OPIC.

   Borrowings under the ING Capital loan bear interest at the London Interbank
   Offered Rate ("LIBOR") plus 3.0% per annum. Borrowings under the Chase loan
   bear interest at the LIBOR rate plus 0.6% per annum. In addition, a guarantee
   fee of 2.4% per annum on the borrowings under the Chase loan guaranteed by
   OPIC are payable to OPIC.

   Borrowings under the Bank Credit Facilities are payable as follows:
   $5,700,000 in April 1999, and thereafter $281,250 per month until final
   maturity on December 31, 2001. The terms of the Bank Credit Facilities, among
   other things, prohibit the Company from merging with another company or
   paying dividends, limit additional indebtedness, general and administrative
   expense, sales of assets and investments

                                       9
<PAGE>

                     AVIVA PETROLEUM INC. AND SUBSIDIARIES
             Notes to Condensed Consolidated Financial Statements
                            (unaudited) (continued)

   and require the maintenance of certain minimum financial ratios. As of
   September 30, 1999, the Company is not in compliance with various covenants
   under the Bank Credit Facilities. Moreover, the Company did not pay the
   $5,700,000 principal payment that was due April 30, 1999, subsequent monthly
   principal payments of $281,250, and interest due subsequent to June 30, 1999.
   As a result, the lender has the right to accelerate payment on the debt and,
   therefore, the Company has classified all long-term debt as current in the
   September 30, 1999 consolidated balance sheet.

   The Company is also required to maintain an escrow account pursuant to the
   Bank Credit Facilities. As of March 31, 1999 and thereafter, the escrow
   account must contain the total of the following for the next succeeding
   three-month period: (i) the amount of the minimum monthly principal payments
   (as defined in the loan documents), plus (ii) the interest payments due on
   the combined loans, plus (iii) the amount of all fees due under the loan
   documents and under the Intercreditor Agreement. The Company is not in
   compliance with the requirements of the escrow account. See management's
   plans to convert the debt in note 2.

6. Interest and Other Income (Expense)

   A summary of interest and other income (expense) follows (in thousands):

                                                Nine Months Ended
                                                  September 30,
                                               1999             1998
                                             --------         --------
       Gain on settlement of litigation      $      -         $    720
       Interest income                             70               66
       Foreign currency exchange gain (loss)      234               24
       Other, net                                  (5)             126
                                             --------         --------
                                             $    299         $    936
                                             ========         ========

7. Commitments and Contingencies

   The Company is engaged in ongoing operations on the Santana contract in
   Colombia. The contract obligations have been met, however, the Company may
   recomplete certain existing wells and engage in various other projects. The
   Company's share of the estimated future costs of these activities is
   approximately $0.6 million at September 30, 1999. Failure to fund certain
   expenditures could result in the forfeiture of all or part of the Company's
   interest in this contract. Any substantial increases in the amounts of the
   above referenced expenditures could adversely affect the Company's ability to
   meet these obligations.

   The Company will most likely fund the recompletion of certain wells through
   arrangements with service companies whereby the services are paid for with
   proceeds from the sale of incremental oil production. Any miscellaneous
   projects will be funded using cash provided from operations. Risks that could
   adversely affect funding of such activities include, among others, delays in
   obtaining any required environmental approvals and permits, cost overruns,
   failure to produce the reserves as projected or a decline in the sales price
   of oil. Depending on the results of future exploration and development
   activities, substantial expenditures which have not been included in the
   Company's cash flow projections may be required.

                                       10
<PAGE>

                     AVIVA PETROLEUM INC. AND SUBSIDIARIES
             Notes to Condensed Consolidated Financial Statements
                            (unaudited) (continued)

  On August 3, 1998, leftist Colombian guerrillas inflicted significant damage
  on the Company's oil processing and storage facilities at the Mary field, and
  to a lesser extent, at the Linda facilities.  Since that time the Company has
  been subject to lesser attacks on its pipelines, wells and equipment resulting
  in  only minor  interruptions  of oil sales.  The Colombian army  guards  the
  Company's operations; however, there can be no assurance that the Company's
  operations will not be the target of additional guerrilla attacks in the
  future.  The damages resulting from the above referenced attacks were
  substantially covered by insurance.  There can be no assurance that such
  coverage will remain available or affordable.

  Under the terms of the contracts with Ecopetrol, a minimum of 25% of all
  revenues from oil sold to Ecopetrol is paid in Colombian pesos which may only
  be utilized in Colombia.  To date, the Company has experienced no difficulty
  in repatriating the remaining 75% of such payments, which are payable in U.S.
  dollars.

  Activities of the Company with respect to the exploration, development and
  production of oil and natural gas are subject to stringent foreign, federal,
  state and local environmental laws and regulations, including but not limited
  to the Oil Pollution Act of 1990, the Outer Continental Shelf Lands Act, the
  Federal Water Pollution Control Act, the Resource Conservation and Recovery
  Act and the Comprehensive Environmental Response, Compensation, and Liability
  Act.  Such laws and regulations have increased the cost of planning,
  designing, drilling, operating and abandoning wells. In most instances, the
  statutory and regulatory requirements relate to air and water pollution
  control procedures and the handling and disposal of drilling and production
  wastes.  Although the Company believes that compliance with environmental laws
  and regulations will not have a material adverse effect on the Company's
  future operations or earnings, risks of substantial costs and liabilities are
  inherent in oil and gas operations and there can be no assurance that
  significant costs and liabilities, including civil or criminal penalties for
  violations of environmental laws and regulations, will not be incurred.
  Moreover, it is possible that other developments, such as stricter
  environmental laws and regulations or claims for damages to property or
  persons resulting from the Company's operations, could result in substantial
  costs and liabilities.  For additional discussions on the applicability of
  environmental laws and regulations and other risks that may affect the
  Company's operations, see the Company's latest annual report on Form 10-K.

  The Company is involved in certain litigation involving its oil and gas
  activities, but unrelated to environmental contamination issues.  Management
  of the Company believes that these litigation matters will not have any
  material adverse effect on the Company's financial condition or results of
  operations.

                                       11
<PAGE>

                     AVIVA PETROLEUM INC. AND SUBSIDIARIES
             Notes to Condensed Consolidated Financial Statements
                            (unaudited) (continued)

8. Segment Information

   The following is a summary of segment information of the Company as of and
   for the nine-month periods ended September 30, 1999 and 1998 (in thousands):
<TABLE>
<CAPTION>

                                                 United
                                                 States      Colombia        Total
                                                --------     ---------     ---------
<S>                                            <C>          <C>           <C>
1999
----
Oil and gas sales                               $    773     $   3,941     $   4,714
                                                --------     ---------     ---------

Expense:
   Production                                        910         1,787         2,697
   Depreciation, depletion and amortization          113           749           862
   General and administrative                        864            62           926
   Recovery of losses on accounts receivable        (105)            -          (105)
   Severance                                           -            62            62
                                                --------     ---------     ---------
                                                   1,782         2,660         4,442
                                                --------     ---------     ---------

Interest and other income (expense), net             133           166           299
Interest expense                                    (240)         (660)         (900)
                                                --------     ---------     ---------

Earnings (loss) before income taxes               (1,116)          787          (329)
Income taxes                                           -           181           181
                                                --------     ---------     ---------

Net earnings (loss)                             $ (1,116)    $     606     $    (510)
                                                ========     =========     =========

Total assets                                    $  1,675     $   6,774     $   8,449
                                                ========     =========     =========

1998
----
Oil and gas sales                               $    597     $   1,981     $   2,578
                                                --------     ---------     ---------

Expense:
   Production                                        950         1,272         2,222
   Depreciation, depletion and amortization          294         1,119         1,413
   Write-down of oil and gas properties            1,370         3,355         4,725
   General and administrative                        868            14           882
                                                --------     ---------     ---------
                                                   3,482         5,760         9,242
                                                --------     ---------     ---------

Interest and other income (expense), net             779           157           936
Interest expense                                    (263)         (225)         (488)
                                                --------     ---------     ---------

Loss before income taxes                          (2,369)       (3,847)       (6,216)
Income taxes                                           -           226           226
                                                --------     ---------     ---------

Net loss                                        $ (2,369)    $  (4,073)    $  (6,442)
                                                ========     =========     =========

Total assets                                    $  3,646     $   7,046     $  10,692
                                                ========     =========     =========
</TABLE>

                                       12
<PAGE>

Item 2. Management's Discussion and Analysis of Financial Condition and Results
-------------------------------------------------------------------------------
of Operations.
--------------

Results of Operations
---------------------

Three Months Ended September 30, 1999 compared to Three Months Ended
----------------------------------------------------------------------
September 30, 1998
------------------

                          United States            Colombia
                               Oil         Gas       Oil        Total
                          -------------   -----    --------    -------
       (Thousands)

       Revenue - 1998       $      104    $  22     $   392    $   518

       Volume variance              88        7         555        650

       Price variance              134       (7)        662        789

       Other                         -       (2)          -         (2)
                          -------------   -----    --------    -------

       Revenue - 1999       $      326    $  20     $ 1,609    $ 1,955
                          =============   =====    ========    =======

Colombian oil volumes were 87,000 barrels in the third quarter of 1999, an
increase of 51,000 barrels as compared to the third quarter of 1998. Such
increase is due to a 48,000 barrel increase resulting from the acquisition of
Garnet effective October 28, 1998, and an increase of 23,000 barrels due to
continuous production in 1999 (1998 production was interrupted by guerilla
attacks that damaged oil processing and storage facilities), partially offset by
a 20,000 barrel decrease resulting from normal production declines.

U.S. oil volumes were 17,000 barrels in 1999, up approximately 8,000 barrels
from 1998.  Of such increase, approximately 3,000 barrels was due to the
Company's Breton Sound 31 field being shut-in during September 1998 due to the
drilling and completion of a saltwater disposal well and adverse weather and
approximately 5,000 barrels was due to the Company's Main Pass 41 field being
shut-in for approximately 70 days during the third quarter of 1998 due to
upgrading and modification of production and water treatment facilities and
adverse weather.  No similar problems occurred in 1999.

U.S. gas volumes before gas balancing adjustments were 4,000 thousand cubic feet
(MCF) in 1999, down 4,000 MCF from 1998.  The Company's gas production comes
almost entirely from the Main Pass 41 field whereat the current operator has
been unable to maintain the gas production.  Such operator has proposed the
abandonment of the platform and wells as of December 31, 1999, and, accordingly
it is unlikely there will be any gas or oil production from this field beyond
that date.  The Company's share of the estimated abandonment costs is
approximately $477,000, of which approximately $210,000 has been funded through
an abandonment account.  The Company will attempt to assign its interest and
remaining liabilities in this platform to a third party in exchange for salvage
value of the platform.  There can be no assurance such an assignment can be
completed.

Colombian oil prices averaged $18.53 per barrel during the third quarter of
1999.  The average price for the same period of 1998 was $10.90 per barrel.  The
Company's average U.S. oil price increased to $19.42 per barrel in 1999, up from
$11.45 per barrel in 1998.  In 1999 prices have been higher than in the third
quarter of 1998 due to an increase in world oil prices.

Operating costs increased approximately 30%, or $211,000, primarily due to the
increase in ownership following the Garnet merger.

Interest expense increased $158,000 in the third quarter of 1999, primarily as a
result of higher outstanding balances of long term debt.

                                       13
<PAGE>

Nine Months Ended September 30, 1999 compared to Nine Months Ended September 30,
--------------------------------------------------------------------------------
1998
----

                          United States         Colombia
                               Oil        Gas     Oil      Total
                          -------------  -----  --------  -------
       (Thousands)

       Revenue - 1998         $     455  $ 142  $  1,981  $ 2,578

       Volume variance               97    (16)    1,269    1,350
       Price variance               109      4       691      804

       Other                          -    (18)        -      (18)
                          -------------  -----   -------  -------

       Revenue - 1999         $     661  $ 112   $ 3,941  $ 4,714
                          =============  =====   =======  =======

Colombian oil volumes were 285,000 barrels in the first nine months of 1999, an
increase of 111,000 barrels as compared to the first nine months of 1998. Such
increase is due to a 156,000 barrel increase resulting from the acquisition of
Garnet effective October 28, 1998, and an increase of 23,000 barrels due to
continuous production in 1999 (1998 production was interrupted by guerrilla
attacks that damaged oil processing and storage facilities), partially offset by
a 68,000 barrel decrease resulting from production declines.

U.S. oil volumes were 44,000 barrels in 1999, an increase of 8,000 barrels as
compared to 1998.  An increase of approximately 13,000 barrels was due to
continuous production from the Company's Main Pass 41 field (shut-in for
approximately 155 days during the first nine months of 1998 due to equipment
failures), offset by a 5,000 barrel decrease resulting from normal production
declines.  U.S. gas volumes before gas balancing adjustments were 45,000 MCF in
1999, up 2,000 MCF from 1998.  Of such increase, approximately 99,000 MCF was
due to the aforementioned continuous production from the Main Pass 41 field,
partially offset by a 97,000 MCF production decline.  See "Results of
Operations--Three Months Ended September 30, 1999 compared to Three Months Ended
September 30, 1998" for discussion of the Main Pass 41 abandonment.

Colombian oil prices averaged $13.82 per barrel during the first nine months of
1999.  The average price for the same period of 1998 was $11.40 per barrel.  The
Company's average U.S. oil price increased to $15.09 per barrel in 1999, up from
$12.61 per barrel in 1998.  U.S. gas prices averaged $2.00 per MCF in 1999
compared to $2.11 per MCF in 1998.

In addition to the above-mentioned variances, U.S. gas revenue decreased
approximately $18,000 as a result of gas balancing adjustments.

Operating costs increased approximately 21%, or $475,000, primarily due to the
increase in ownership following the Garnet merger.

Depreciation, depletion and amortization decreased by 39%, or $551,000,
primarily due to a decrease in costs subject to amortization resulting from
property write-downs.

The Company recorded write-downs of $3,355,000 and $1,370,000 to the carrying
amounts of its Colombian and U.S. oil and gas properties, respectively, as a
result of ceiling test limitations on capitalized costs during 1998.  No such
write-downs were required as of September 30, 1999.

The Company incurred severance expense of $62,000 during the first nine months
of 1999 related to Colombian operations.  The Company has taken significant cost
cutting measures in Colombia since it merged with Garnet Resources Corporation
and took over operatorship of the Colombian properties.

Interest and other income decreased $637,000.  During the first quarter of 1998
the Company realized a $720,000 gain on the settlement of litigation involving
the administration of a take or pay contract settlement.  No such gain was
recorded in 1999; however, in 1999 a foreign currency exchange gain related to
Colombian activity of $234,000 was recorded.

                                       14
<PAGE>

Interest expense increased $412,000 in the first nine months of 1999, primarily
as a result of higher outstanding balances of long term debt.

Income taxes were $45,000 lower in 1999 principally as a result of lower
Colombian "presumptive" income tax.

Year 2000
---------

The Year 2000 problem is the inability of a meaningful proportion of the world's
computers, software applications and embedded semiconductor chips to cope with
the change of the year from 1999 to 2000.  This issue can be traced to the
infancy of computing, when computer data and programs were designed to save
memory space by truncating the date field to just six digits (two for the day,
two for the month and two for the year).   Such information applications
automatically assume that the two-digit year field represents a year within the
20th century.  As a result of this, systems could fail to operate or fail to
produce correct results.

The Year 2000 problem affects computers, software applications, and related
equipment used, operated or maintained by the Company.  Accordingly, the Company
is currently assessing the potential impact of, and the costs of remediating,
the Year 2000 problem for its internal systems and on facilities and equipment.
The Company's business is substantially dependent upon the operations of
computer systems, and as such, the Company has established a committee made up
of leaders from the operational areas of the Company.  The committee has the
involvement of senior management and its objectives are high priority.

The Company is continuing the process of identifying the computers, software
applications, and related equipment used in connection with its operations that
must be modified, upgraded or replaced to minimize the possibility of a material
disruption of its business.  The Company has commenced the process of modifying,
upgrading and replacing systems which have already been assessed as adversely
affected by the Year 2000 problem, and expects to complete this process prior to
the end of 1999.

In addition to computers and related systems, the operation of office equipment,
such as fax machines, copiers, telephone switches, security systems and other
common devices may be affected by the Year 2000 problem.  The Company is
currently assessing the potential effect of, and costs of remediating, the Year
2000 problem on its office systems and equipment. The Company has initiated
communications with third party suppliers of computers, software, and other
equipment used, operated or maintained by the Company to identify and, to the
extent possible, to resolve issues involving the Year 2000 problem.  However,
the Company has limited or no control over the actions of these third party
suppliers.  Thus, while the Company expects that it will be able to resolve any
significant Year 2000 problems with these systems, there can be no assurance
that these suppliers will resolve any or all Year 2000 problems with these
systems before the occurrence of a material disruption to the business of the
Company.  Any failure of these third parties to timely resolve Year 2000
problems with their systems could have a material adverse effect on the
Company's business, financial condition, and results of operations.

Because the Company's assessment is not complete, it is unable to accurately
predict the total cost to the Company of completing any required modifications,
upgrades, or replacements of its systems or equipment.  The Company does not,
however, believe that such total cost will exceed a total of $200,000, of which
approximately $70,000 has been incurred as of November 11, 1999.  The Company
expects to identify and resolve all Year 2000 problems that could materially
adversely affect its business operations.  However, management believes that it
is not possible to determine with complete certainty that all Year 2000 problems
affecting the Company, its purchasers or its suppliers have been identified or
corrected.  The number of devices that could be affected and the interactions
among these devices are simply too numerous.  In addition, no one can accurately
predict how many Year 2000 problem-related failures will occur or the severity,
duration, or financial consequences of these perhaps inevitable failures.  As a
result, management expects that the Company will likely suffer the following
consequences: (i) a significant number of operational inconveniences and
inefficiencies for the Company, its purchasers and its suppliers will divert
management's time and attention and financial and human resources from

                                       15
<PAGE>

its ordinary business activities; (ii) a few serious system failures that will
require significant effort by the Company, its purchasers or its suppliers to
prevent or alleviate material business disruptions; (iii) several routine
business disputes and claims due to Year 2000 problems that will be resolved in
the ordinary course of business; and (iv) possible business disputes alleging
that the Company failed to comply with the terms of its contracts or industry
standards of performance, some of which could result in litigation.

The Company has developed certain contingency plans to be implemented if its
efforts to identify and correct Year 2000 problems affecting its operational
systems and equipment are not effective.  The Company plans to complete its
contingency plans prior to the end of 1999.  Depending on the systems affected,
any contingency plans developed by the Company, if implemented, could have a
material adverse effect on the Company's financial condition and results of
operations.

The discussion of the Company's efforts, and management's expectations, relating
to Year 2000 compliance are forward-looking statements.  The Company's ability
to achieve Year 2000 compliance and the level of incremental costs associated
therewith, could be adversely impacted by, among other things, the availability
and cost of programming and testing resources, vendors' ability to modify
proprietary software, and unanticipated problems identified in the ongoing
compliance review.

New Accounting Pronouncements
-----------------------------

The Company is assessing the reporting and disclosure requirements of SFAS No.
133, Accounting for Derivative Instruments and Hedging Activities.  This
statement establishes accounting and reporting standards for derivative
instruments and hedging activities.  The statement is effective for financial
statements for fiscal years beginning after June 15, 2000.  The Company believes
SFAS No. 133 will not have a material impact on its financial statements or
accounting policies.  The Company will adopt the provisions of SFAS No. 133 in
the first quarter of 2001.

Liquidity and Capital Resources
-------------------------------

During the last quarter of calendar year 1997 and throughout calendar year 1998,
world oil prices declined dramatically.  This decline in oil prices was
particularly severe in Colombia.  Colombian oil prices, during the twenty-four
month period ended December 31, 1998, fell from a high of $22.71 per barrel in
January 1997 to $7.50 per barrel in December 1998.  Whereas the sale price for
crude oil from the Santana contract averaged $19.82 per barrel in 1996 and
$17.39 per barrel in 1997, the sale price averaged $10.31 per barrel during
calendar year 1998 and $13.82 per barrel during the first nine months of 1999.

These price declines have materially and adversely affected the results of
operations and the financial position of the Company.  During the years ended
December 31, 1998, 1997 and 1996, the Company reported net losses of $17.1
million, $22.5 million and $0.9 million, respectively, and declining amounts of
net cash provided by (used in) operating activities of $(0.05) million, $1.7
million and $8.9 million, respectively.  The Company recorded an additional net
loss of $0.5 million for the nine-month period ended September 30, 1999.  The
Company's stockholders' deficit was approximately $11.6 million as of September
30, 1999.

Although world oil prices have substantially recovered in recent months, the
Company remains highly leveraged with $14.5 million in current debt as of
September 30, 1999, pursuant to bank credit facilities with ING (U.S.) Capital
Corporation ("ING Capital"), the U.S. Overseas Private Investment Corporation
("OPIC") and Chase Bank of Texas, N.A. ("Chase"), as more fully described in
note 5 to the condensed consolidated financial statements.

The Company is not in compliance with various covenants under the bank credit
facilities nor is it in compliance with the minimum escrow balance required
thereunder.  As a result, the lender has the right to accelerate payment on the
debt and, therefore, the Company has classified all long-term debt as current in
the September

                                       16
<PAGE>

30, 1999 consolidated balance sheet. Furthermore, the Company was unable to pay
the principal payment of $5.7 million due on April 30, 1999, and subsequent
monthly principal payments of $281,250 (an aggregate of $7,106,250 through
September 30, 1999). The Company has paid the related interest through June 30,
1999; however, interest due subsequent to this date has not been paid. Assuming
no change in its capital structure, the Company will not have the financial
resources to pay the future minimum monthly principal payments of $281,250
through December 31, 2001.

On February 22, 1999, the Company signed a letter of intent to merge with Sharpe
Resources Corporation ("Sharpe"), a publicly traded oil and gas exploration and
production company incorporated in Ontario, Canada.  As part of the merger
arrangements, the Company's lenders (i.e., ING Capital, OPIC and Chase) had
agreed in principle to cancel the Company's $14.6 million of then outstanding
debt in exchange for a cash payment of $5 million, plus $3 million of preferred
stock in the merged entity and 25% of the common shares to be issued to the
Aviva shareholders.  On April 27, 1999, however, the merger discussions with
Sharpe were terminated as a result of the inability of the parties to reach
agreement on terms and conditions of the proposed merger.

On May 19, 1999, the Company engaged Triumph Securities Corporation as an
investment banker to assist in recapitalizing the Company with up to $10 million
for drilling, acquisitions and the purchase of the Company's outstanding bank
debt. A recapitalization pursuant to this engagement was not achieved. On July
23, 1999, the Company terminated Triumph's engagement as the Company's
investment banker.

Management of the Company is currently in discussions with the Company's lenders
concerning the conversion of the Company's outstanding bank debt, which
currently is $14.5 million, into common stock of the Company.  Under
management's most recent proposal, the outstanding debt and accrued interest
thereon would be exchanged for 298 million newly issued common shares of the
Company.  Following such an exchange, the lenders would own approximately 86% of
the then outstanding shares of the Company and the Company's future cash flows
would be available for working capital, drilling and acquisitions.  Management
believes this debt conversion can be achieved and will provide the Company with
the liquidity necessary to continue operations and reposition the Company.

While management of the Company is pursuing the debt conversion assiduously, its
ability to effect such a conversion is dependent upon the Company's lenders, a
matter that is beyond the control of the Company.  In particular, the Company's
lenders must consent to waive the defaults of the Company under its bank credit
facilities pending preparation, negotiation, execution and delivery of
definitive debt conversion agreements.  The Company's lenders have not yet and
may not ever agree to a conversion of the Company's debt.  If the Company is
unable to consummate the debt conversion, then, in the absence of another
business transaction, the Company cannot achieve compliance with nor make
payments required by the bank credit facilities and, accordingly, the lenders
could declare a default, accelerate all amounts outstanding, and attempt to
realize upon the collateral securing the debt.  As a result of this uncertainty,
management believes there is substantial doubt about the Company's ability to
continue as a going concern.

With the exception of historical information, the matters discussed in this
quarterly report contain forward-looking statements that involve risks and
uncertainties.  Although the Company believes that its expectations are based on
reasonable assumptions, it can give no assurance that its goals will be
achieved.  Important factors that could cause actual results to differ
materially from those in the forward-looking statements herein include, among
other things, general economic conditions, volatility of oil and gas prices, the
impact of possible geopolitical occurrences world-wide and in Colombia,
imprecision of reserve estimates, changes in laws and regulations, unforeseen
engineering and mechanical or technological difficulties in drilling, working-
over and operating wells during the periods covered by the forward-looking
statements, as well as other factors described in the Company's annual report on
Form 10-K.

                                       17
<PAGE>

Item 3.  Quantitative and Qualitative Disclosures About Market Risk
-------------------------------------------------------------------

The Company is exposed to market risk from changes in interest rates on debt and
changes in commodity prices.

The Company's exposure to interest rate risk relates to variable rate loans that
are benchmarked to LIBOR interest rates.  The Company does not use derivative
financial instruments to manage overall borrowing costs or reduce exposure to
adverse fluctuations in interest rates.  The impact on the Company's results of
operations of a one-point interest rate change on the outstanding balance of the
variable rate debt as of September 30, 1999 would be immaterial.

The Company produces and sells crude oil and natural gas.  These commodities are
sold based on market prices established with the buyers.  The Company does not
use financial instruments to hedge commodity prices.


PART II - OTHER INFORMATION

Item 3.  Defaults Upon Senior Securities
----------------------------------------

The Company is in default with respect to its Bank Credit Facilities.  For more
information see notes 2 and 5 to the condensed consolidated financial statements
and Item 2. Management's Discussion and Analysis of Financial Condition and
Results of Operations -- Liquidity and Capital Resources, as set forth elsewhere
herein.

Item 6.  Exhibits and Reports on Form 8-K
-----------------------------------------

a) Exhibits
-----------

27.1 Financial Data Schedule.

b) Reports on Form 8-K
----------------------

The Company did not file any Current Reports on Form 8-K during or subsequent to
the end of the third quarter of 1999.

                                       18
<PAGE>

                                  SIGNATURES
                                  ----------

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

                                         AVIVA PETROLEUM INC.



Date:  November 11, 1999                 /s/ Ronald Suttill
                                         ------------------
                                         Ronald Suttill
                                         President and Chief Executive Officer




                                         /s/  James L. Busby
                                         -------------------
                                         James L. Busby
                                         Treasurer and Secretary
                                         (Principal Financial and Accounting
                                          Officer)

                                       19
<PAGE>

                               INDEX TO EXHIBITS


Exhibit
Number    Description of Exhibit
------    ----------------------

  27.1    Financial Data Schedule.

                                       20