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                                  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 JUNE 30, 2000

                                       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 NO. 0-21411

                                   ----------

                              COSTILLA ENERGY, INC.
             (Exact name of registrant as specified in its charter)

                                   ----------

              DELAWARE                                          75-2658940
   (State or other jurisdiction of                           (I.R.S. Employer
    incorporation or organization)                           Identification No.)

       400 WEST ILLINOIS, SUITE 900
            MIDLAND, TEXAS                                          79701
(Address of principal executive offices)                         (Zip code)

                                 (915) 683-3092
              (Registrant's telephone number, including area code)

                                 Not applicable
              (Former name, former address and former fiscal year,
                         if changed since last report)

                                   ----------

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 [ ] NO [X]


THERE ARE ZERO SHARES OF REGISTRANT'S COMMON STOCK CURRENTLY OUTSTANDING. ALL
SUCH SHARES WERE CANCELED AS OF THE EFFECTIVE DATE OF THE REGISTRANT'S CHAPTER
11 PLAN AS DESCRIBED THEREIN.

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                  SPECIAL NOTE REGARDING BANKRUPTCY PROCEEDINGS


         Costilla Energy, Inc. (the "Company") filed Chapter 11 bankruptcy on
September 3, 1999 in a case styled In Re: Costilla Energy, Inc. Case No.
99-70653, in the United States Bankruptcy Court for the Western District of
Texas, Midland Division. The Company conducted its business as debtor in
possession from the date of filing of the bankruptcy through the sale of all of
the oil and gas assets of the Company in June 2000 and until confirmation of the
Company's Plan of Reorganization (Liquidation) as Amended, on September 15,
2000, effective October 1, 2000 (the "Plan"). The Plan provides, among other
things, for the establishment of a liquidating trust, distributions to creditors
at the discretion of the trustee of the liquidating trust, and the cancellation
of all of the Company's common stock, preferred stock and other equity
securities. As a result, effective October 1, 2000 the Company had no
shareholders, and was and continues to be under the management and control of
the trustee of the liquidating trust subject to the terms of the Plan and the
supervision of the bankruptcy court. A more detailed discussion of these and
related matters is set forth in the Company's Annual Report on Form 10-K for the
year ended December 31, 1999 (the "1999 10-K").

         The information contained herein is provided as of the date of the
period covered by this report. The accompanying financial statements have been
prepared on a going concern basis, which contemplates continuity of operations,
realization of assets and liquidation of liabilities in the normal course of
business. However, as a result of the bankruptcy filing, the sale of all of the
Company's oil and gas assets in June 2000 and the confirmation of a plan of
reorganization (liquidation) in September 2000, the carrying amounts of all
assets may not be realized and certain liabilities will be settled for less than
the amounts recorded. Therefore, no analysis or information is provided with
respect to the Company as a going concern, whether in terms of capital
resources, capital expenditures or otherwise, due to the liquidation of the
Company in the bankruptcy as discussed above. Discussions of material events
which occurred subsequent to the period covered by this report are contained in
the 1999 10-K and Current Reports on Form 8-K filed throughout 2000 and the
exhibits thereto.



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                              COSTILLA ENERGY, INC.

                                    FORM 10-Q

                                TABLE OF CONTENTS




                                                                                     Page
                                                                                     ----
                                                                               
                              PART I - FINANCIAL INFORMATION


Item 1.     Financial Statements

            Consolidated Balance Sheets as of  June 30, 2000 and
              December 31, 1999 (unaudited)........................................   4

            Consolidated Statements of Operations for the three and six months
              ended June 30, 2000 and 1999 (unaudited).............................   5

            Consolidated Statements of Cash Flows for the three and six months
              ended June 30, 2000 and 1999 (unaudited).............................   6

            Notes to Consolidated Financial Statements (unaudited).................   7

Item 2.     Management's Discussion and Analysis of Financial
              Condition and Results of Operations..................................   9

Item 3.     Quantitative and Qualitative Disclosures About Market Risk.............  11


                                PART II - OTHER INFORMATION


Item 6.     Exhibits and Reports on Form 8-K.......................................  12

Signatures.........................................................................  13



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                         PART I - FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

                             COSTILLA ENERGY, INC.
                             (DEBTOR-IN-POSSESSION)
                          CONSOLIDATED BALANCE SHEETS
                                 (IN THOUSANDS)
                                  (UNAUDITED)



                                                                             JUNE 30,   DECEMBER 31,
                                                                               2000         1999
                                                                            ---------   ------------
                                                                                  
                                    ASSETS
CURRENT ASSETS:
   Cash and cash equivalents                                                $ 142,054    $  13,418
   Accounts receivable:
        Trade, net                                                                708        1,254
        Oil and gas sales                                                       3,037        4,558
   Prepaid and other current assets                                               297          434
                                                                            ---------    ---------
           Total current assets                                               146,096       19,664
                                                                            ---------    ---------
PROPERTY, PLANT AND EQUIPMENT, AT COST:
   Oil and gas properties, using the
     successful efforts method of accounting:
        Proved properties                                                         462      154,158
        Unproved properties                                                        21        5,956
   Accumulated depletion, depreciation and amortization                           (34)     (88,749)
                                                                            ---------    ---------
                                                                                  449       71,365
   Other property and equipment, net                                            1,768        2,413
                                                                            ---------    ---------
           Total property, plant and equipment                                  2,217       73,778
                                                                            ---------    ---------
OTHER ASSETS:
   Deferred charges                                                             5,161        5,590
   Deferred hedge charges                                                       6,638       10,895
   Other                                                                        1,856        1,969
                                                                            ---------    ---------
           Total other assets                                                  13,655       18,454
                                                                            ---------    ---------
                                                                            $ 161,968    $ 111,896
                                                                            =========    =========
        LIABILITIES AND STOCKHOLDERS' DEFICIT
LIABILITIES NOT SUBJECT TO COMPROMISE:
   Current maturities of long-term debt                                     $  45,940    $  45,940
   Trade accounts payable                                                       1,892        3,142
   Undistributed revenue                                                        1,686        2,477
   Other current liabilities                                                    1,681        2,160
                                                                            ---------    ---------
           Total liabilities not subject to compromise                         51,199       53,719
                                                                            ---------    ---------
LIABILITIES SUBJECT TO COMPROMISE:
   Trade accounts payable                                                       2,099        2,771
   Other current liabilities                                                    7,790        7,790
   Long-term debt                                                             181,435      181,550
                                                                            ---------    ---------
           Total liabilities subject to compromise                            191,324      192,111
                                                                            ---------    ---------
STOCKHOLDERS' DEFICIT :
   Preferred stock, $.10 par value (3,000,000 shares authorized;
    50,000 shares outstanding at June 30, 2000 and December 31, 1999                5            5
   Common stock, $.10 par value (100,000,000 shares authorized;
    14,101,580 shares outstanding at June 30, 2000 and December 31, 1999)       1,410        1,410


   Additional paid-in capital                                                  96,030       96,030
   Retained deficit                                                          (178,000)    (231,379)
                                                                            ---------    ---------
           Total stockholders' deficit                                        (80,555)    (133,934)
                                                                            ---------    ---------
COMMITMENTS AND CONTINGENCIES                                                      --           --
                                                                            ---------    ---------
                                                                            $ 161,968    $ 111,896
                                                                            =========    =========


See accompanying notes to consolidated financial statements.


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                             COSTILLA ENERGY, INC.
                             (DEBTOR-IN-POSSESSION)
                     CONSOLIDATED STATEMENTS OF OPERATIONS
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)
                                  (UNAUDITED)




                                             THREE MONTHS ENDED       SIX MONTHS ENDED
                                                   JUNE 30,               JUNE 30,
                                             -------------------    -------------------
                                               2000       1999        2000       1999
                                             --------   --------    --------   --------
                                                                   
REVENUES:
  Oil and gas sales                          $  9,361   $ 12,288    $ 19,023   $ 25,052
  Interest and other                              539          5         694         16
  Gain on sale of assets                       55,349        253      55,385        251
                                             --------   --------    --------   --------

                                               65,249     12,546      75,102     25,319
                                             --------   --------    --------   --------

EXPENSES:

  Oil and gas production                        3,015      4,713       6,537     10,718
  General and administrative                    3,354      2,446       5,233      5,366
  Exploration and abandonments                    125        412         833      1,531
  Depreciation, depletion and amortization      2,603      5,205       6,130     10,387
  Loss on termination of purchase option           --         74          --     47,562
  Impairment                                       --      9,154          --      9,154
  Loss on commodity transactions                   --      1,793         502      1,793
  Interest                                      1,314      5,560       2,488     10,547
                                             --------   --------    --------   --------

                                               10,411     29,357      21,723     97,058
                                             --------   --------    --------   --------


NET INCOME (LOSS)                            $ 54,838   $(16,811)   $ 53,379   $(71,739)
                                             ========   ========    ========   ========

CUMULATIVE PREFERRED STOCK DIVIDEND          $     --   $     --    $     --   $  1,000
                                             ========   ========    ========   ========

NET LOSS APPLICABLE TO COMMON EQUITY         $ 54,838   $(16,811)   $ 53,379   $(72,739)
                                             ========   ========    ========   ========

  INCOME (LOSS) PER SHARE                    $   3.89   $  (1.20)   $   3.79   $  (5.42)
                                             ========   ========    ========   ========


WEIGHTED AVERAGE SHARES OUTSTANDING            14,102     14,025      14,102     13,423
                                             ========   ========    ========   ========



See accompanying notes to consolidated financial statements.


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                              COSTILLA ENERGY, INC.
                             (DEBTOR-IN-POSSESSION)
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (IN THOUSANDS)
                                   (UNAUDITED)



                                                                         THREE MONTHS ENDED           SIX MONTHS ENDED
                                                                              JUNE 30,                    JUNE 30,
                                                                     ------------------------      ------------------------
                                                                        2000           1999           2000           1999
                                                                     ---------      ---------      ---------      ---------
                                                                                                      
CASH FLOWS FROM OPERATING ACTIVITIES:

    NET LOSS                                                         $  54,838      $ (16,811)     $  53,379      $ (71,739)

    ADJUSTMENTS TO RECONCILE NET LOSS TO NET
    CASH PROVIDED BY OPERATING ACTIVITIES:

      Depreciation, depletion and amortization                           2,603          5,205          6,126         10,387
      Impairment of oil and gas properties                                  --          9,154             --          9,154
      Exploration and abandonments                                          (2)           147            405            349
      Amortization of deferred charges                                     156            156            312            312
      Deferred income tax expense                                          198             --          3,754             --
      Loss on termination of purchase option                                --             --             --         46,985
      Gain (loss) on sale of oil and gas properties                    (55,349)          (253)       (55,385)          (251)
      Gain (loss) on commodity transactions                                 --          1,793            538          1,793
                                                                     ---------      ---------      ---------      ---------

                                                                         2,444           (609)         9,129         (3,010)

      Changes in operating assets and liabilities:
         Decrease (increase) in accounts receivable                      2,099            884            183          2,114
         Decrease (increase) in other assets                               166            679            249            757
         Increase (decrease) in accounts payable                        (1,158)        (8,663)        (2,552)       (15,500)
         Increase (decrease) in other liabilities                           88         (4,420)          (640)          (193)
         Increase (decrease) in deferred revenue                            --           (960)            --          1,920
                                                                     ---------      ---------      ---------      ---------

             Net cash provided by (used in) operating activities         3,639        (13,089)         6,369        (13,912)
                                                                     ---------      ---------      ---------      ---------

CASH FLOWS FROM INVESTING ACTIVITIES:

    Additions to oil and gas properties                                 (1,475)        (1,557)        (4,819)        (5,175)
    Proceeds from sale of oil and gas properties                       127,082         15,540        127,082         30,033
    Restricted cash deposit                                                 --             --             --             --
    Additions to other property and equipment                                6            (16)             4            (43)
                                                                     ---------      ---------      ---------      ---------

             Net cash provided by investing activities                 125,613         13,967        122,267         24,815
                                                                     ---------      ---------      ---------      ---------

CASH FLOWS FROM FINANCING ACTIVITIES:

    Borrowings under long-term debt                                         --          8,000             --          8,000
    Payments of long-term debt                                              --         (9,078)            --        (21,100)
                                                                     ---------      ---------      ---------      ---------

             Net cash provided by (used in) financing activities            --         (1,078)            --        (13,100)
                                                                     ---------      ---------      ---------      ---------

NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS                   129,252           (200)       128,636         (2,197)

CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD                          12,802          3,254         13,418          5,251
                                                                     ---------      ---------      ---------      ---------

CASH AND CASH EQUIVALENTS, END OF PERIOD                             $ 142,054      $   3,054      $ 142,054      $   3,054
                                                                     =========      =========      =========      =========



See accompanying notes to consolidated financial statements.


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                              COSTILLA ENERGY, INC.


                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                  JUNE 30, 2000
                                   (UNAUDITED)

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

         The interim financial information as of June 30, 2000, and for the six
months ended June 30, 2000 and 1999, is unaudited. Certain information and
footnote disclosures normally included in financial statements prepared in
accordance with generally accepted accounting principles have been condensed or
omitted in this Form 10-Q pursuant to the rules and regulations of the
Securities and Exchange Commission. However, in the opinion of management, these
interim financial statements include all the necessary adjustments to fairly
present the results of the interim periods and all such adjustments are of a
normal recurring nature. The interim consolidated financial statements should be
read in conjunction with the unaudited financial statements for the year ended
December 31, 1999.

         The Company is an oil and gas exploration and production concern with
properties located principally in the Gulf Coast region, the Rocky Mountain
region and the Permian Basin area of Texas and New Mexico.


2. DERIVATIVE FINANCIAL INSTRUMENTS

         The Company utilizes derivative financial instruments to manage
well-defined commodity price and interest rate risks. The Company is exposed to
credit losses in the event of nonperformance by the counterparties to its
commodity hedges and its interest rate swap agreements. The Company only deals
with reputable financial institutions as counterparties and anticipates that
such counterparties will be able to fully satisfy their obligations under the
contracts. The Company does not obtain collateral or other security to support
financial instruments subject to credit risk but monitors the credit standing of
the counterparties.

         Commodity Hedges. The Company utilizes swap agreements to hedge the
effect of price changes on future oil and gas production. The objective of its
hedging activities is to achieve more predictable revenues and cash flows. In a
typical swap arrangement, the Company receives the difference between a fixed
price per unit of production and a price based upon a higher agreed to third
party index. However, should the fixed price exceed the agreed third party
index, the Company has to pay the difference. In the past, the Company utilized
option contracts to hedge its production. In this case, if market prices of oil
and gas exceeded the strike price of put options, the options would expire
unexercised, therefore reducing the effective price received for oil and gas
sales by the cost of the related option. If the market prices of oil and gas
exceeded the strike price of call options, the Company would be obligated to pay
the contracting counterparty an amount equal to the contracted volumes times the
difference between the market price and the strike price, therefore reducing the
effective price received for oil and gas sales by the amount paid to the
counterparty.

         There were no hedge contracts outstanding at December 31, 1999 or June
30, 2000.

3. TERMINATION OF PIONEER ACQUISITION

         In September 1998, Costilla entered into an agreement with Pioneer
Natural Resources USA, Inc. ("Pioneer") to acquire certain oil and gas
properties (the "Pioneer Acquisition Properties") for $410 million. As part of
this agreement, Costilla made a $25 million forfeitable deposit plus an
additional $16 million would be paid if the transaction did not close in
December 1998. In December 1998, the previous agreement was terminated and
replaced by a new agreement. Pioneer retained the $25 million deposit and
Costilla issued three million shares of its commons stock and relinquished its
right to a property interest. In return, Costilla executed a new agreement to


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purchase the Pioneer Acquisition Properties for $294 million. This agreement
terminated on March 31, 1999, and Costilla and Pioneer then entered into a new
agreement whereby Costilla would acquire certain of the Pioneer Acquisition
Properties for $250 million. In connection with the new agreement, the Company
issued to Pioneer one million shares of its common stock. The new agreement
terminated by its terms on April 15, 1999 and the related costs, none of which
are recoverable, were expensed. The Company is review potential causes of action
against Pioneer related to this transaction.

         The loss on the termination of the Pioneer acquisition consists of the
following:


                                                       (in thousands)
                                                       --------------
                                                    
Cash Deposit                                               $25,000
Four million shares of Costilla common stock                13,700
Oil & gas property assigned to Pioneer                       3,558
Interest capitalized for acquisition                         1,012
Due diligence, legal, accounting and engineering             4,292
                                                           -------
     Total loss on termination of acquisition              $47,562
                                                           =======


4. SALE OF OIL AND GAS ASSETS

         On June 15, 2000 Costilla closed the sale of its oil and gas assets to
Louis Dreyfus Natural Gas Corp. The gross purchase price for the properties was
$133.25 million, which is subject to certain adjustments called for in the Asset
Purchase Agreement with Louis Dreyfus. Proceeds from the sale have been
distributed to Costilla's creditors in accordance with an amended plan of
reorganization confirmed by the Bankruptcy Court's Order in September 2000.


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                              COSTILLA ENERGY, INC.


                SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS


         Certain statements in this Form 10-Q constitute "forward-looking
statements" within the meaning of the Private Securities Litigation Reform Act
of 1995 (the "Reform Act"). Such forward-looking statements involve known and
unknown risks, uncertainties, and other factors which may cause the actual
results, performance, or achievements of Costilla to be materially different
from any future results, performance, or achievements expressed or implied by
such forward-looking statements. Such factors include, among others, the
following: the volatility of oil and gas prices, the Company's drilling results
and ability to replace oil and gas reserves, the availability of capital
resources, the reliance upon estimates of proved reserves, operating hazards and
uninsured risks, competition, government regulation, and the ability of the
Company to implement its business strategy, and other factors referenced in the
Company's public filings with the Securities and Exchange Commission.


ITEM 2.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
         AND RESULTS OF OPERATIONS

RESULTS OF OPERATIONS

  Three Months Ended June 30, 2000 Compared to Three Months Ended June 30, 1999

         The Company's oil and gas revenues for the three months ended June 30,
2000 were $9,361,000, representing a decrease of $2,927,000 (24%) from revenues
of $12,288,000 in 1999. Sales of producing properties in 1999 made up the
significant part of the decreases, partially offset by higher oil and gas
prices.

         Oil and gas production was 3,363 MMcfe in 2000 compared to 5,870 MMcfe
in 1999, a 43% decrease. Actual oil production was down from 227,000 Bbls for
the three months ended June 30, 1999, to 96,000 Bbls for 2000. Gas production
decreased for the same period from 4,508 Mmcf to 2,785 Mmcf. Oil production
declined to a combination of normal production decline and the sale of
significant oil properties in mid-1999. Gas production declined due to normal
production decline with no replacement of production from new drilling due to
the Company's restricted liquidity.

         Oil and gas production costs for the three month period ended June 30,
2000 were $3,015,000 compared to $4,713,000 in 1999, representing a decrease of
$1,698,000 (36%), due principally to the sale of certain oil and gas properties
in 1999.

         Loss on termination of purchase option relates to the termination of
the Pioneer acquisition. At March 31, 1999, management believed the probability
of successful completion of the acquisition was questionable. The costs, none of
which are recoverable, were expensed as of that date. The $47,562,000 loss
includes a cash payment of $25,000,000, the relinquishment of Costilla's right
to a property interest of $3,558,000, 4,000,000 shares of common stock valued at
$13,700,000 and capitalized interest, legal, accounting, engineering and due
diligence costs of $5,304,000.

         General and administrative expenses for the three months ended June 30,
2000 were $3,354,000, representing an increase of $908,000 (37%) from 1999 of
$2,446,000. The Company's agreement with Ballard Petroleum to reimburse Ballard
for certain general and administrative expenses was terminated effective March
1, 1999 and is expected to result in a savings of approximately $124,000 per
month. Subsequent to March 31, 1999


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the Company further reduced its staff and related expenses by approximately
$225,000 monthly, the effect of which was realized beginning approximately June
1, 1999. The increase was due primarily to severance payments made to terminated
employees in 2000 and to increased costs related to the Company's efforts to
reorganize.

         Exploration and abandonment expense decreased to $125,000 for the three
months ended June 30, 2000 compared to $412,000 in 1999. Dry hole and
abandonment costs decreased to $25,000 in 2000 from $210,000 in 1999. The
Company incurred $12,000 of seismic costs for the three months ended June 30,
2000, compared to $18,000 in the comparable period in 1999. The Company incurred
$121,000 of other geological and geophysical costs during the three month period
ended June 30, 2000 compared to $184,000 for the same period in 1999. The
decrease in exploration and abandonments expense was primarily related to the
Company's restricted exploratory drilling activities in 2000 compared to 1999.

         Depreciation, depletion and amortization ("D D & A") expense for the
three month period ended June 30, 2000 was $2,603,000 compared to $5,205,000 for
1999, representing a decrease of $2,602,000 (50%). During the 2000 period, D D &
A on oil and gas production was provided at an average rate of $0.77 per Mcfe
compared to $0.89 per Mcfe for 1999. The decrease was primarily due to sale of
properties in mid-1999 and reduced production volumes.

         Interest expense was $1,314,000 for the three months ended June 30,
2000, compared to $5,560,000 for the comparable period in 1999. The $4,246,000
(76%) decrease was primarily attributable to the termination of interest accrual
on 10 1/4% notes which was partially offset by increase in bank interest rates
on the Company's revolver.


Six Months Ended June 30, 2000 Compared to Six Months Ended June 30, 1999

         The Company's oil and gas revenues for the six months ended June 30,
2000 were $19,023,000, representing a decrease of $2,657,633 (11%) from revenues
of $25,052,000 in 1999. Reduced production due to the sale of properties
accounted for the significant part of the decrease in revenues, partially offset
by higher oil and gas prices.

         Oil and gas production was 7,373 MMcfe in 2000 compared to 12,804 MMcfe
in 1999, a 42% decrease. Actual oil production was down from 586,000 Bbls for
the six months ended June 30, 1999, to 212,000 Bbls for 2000. Gas production
decreased for the same period from 9,291 Mmcf to 6,100 Mmcf. Oil production
declined due to a combination of normal production decline and the sale of
significant oil properties in mid-1999. Gas production declined due to normal
production decline with no replacement of production from new drilling due to
the Company's restricted liquidity.

         Oil and gas production costs for the six month period ended June 30,
2000 were $6,537,000 compared to $10,718,000 in 1999 representing a decrease of
$4,182,000 (39%), due principally to the sale of certain oil and gas properties
in 1999.

         Loss on termination of purchase option relates to the termination of
the Pioneer acquisition. At March 31, 1999, management believed the probability
of successful completion of the acquisition was questionable. The costs, none of
which are recoverable, were expensed as of that date. The $47,562,000 loss
includes a cash payment of $25,000,000, the relinquishment of Costilla's right
to a property interest of $3,558,000, 4,000,000 shares of common stock valued at
$13,700,000 and capitalized interest, legal, accounting, engineering and due
diligence costs of $5,304,000.

          General and administrative expenses for the six months ended June 30,
2000 were $5,233,000, representing an increase of $132,000 (2%) from 1999 of
$5,366,000. The Company's agreement with Ballard Petroleum to reimburse Ballard
for certain general and administrative expenses was terminated effective March
1, 1999 and is expected to result in a savings of approximately $124,000 per
month. Subsequent to March 31, 1999 the Company further reduced its staff and
related expenses by approximately $225,000 monthly, the effect of which was
realized beginning approximately June 1, 1999. These decreases were offset due
primarily to severance payments made to terminated employees in 2000 and to
increased costs related to the Company's reorganization efforts.


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         Exploration and abandonment expense decreased to $833,000 for the six
months ended June 30, 2000 compared to $1,531,000 in 1999. Dry hole and
abandonment costs decreased to $635,000 in 2000 from $583,000 in 1999. The
Company incurred $12,000 of seismic costs for the six months ended June 30,
2000, compared to $518,000 in the comparable period in 1999. The Company
incurred $185,000 of other geological and geophysical costs during the six month
period ended June 30, 2000 compared to $431,000 for the same period in 1999. The
decrease in exploration and abandonment expense was primarily related to the
Company's restricted exploratory drilling activities in 2000 compared to 1999.

         Depreciation, depletion and amortization ("D D & A") expense for the
six month period ended June 30, 2000 was $6,130,000 compared to $10,387,000 for
1999, representing a decrease of $4,257,000 (41%). During the 2000 period, D D &
A on oil and gas production was provided at an average rate of $0.83 per Mcfe
compared to $0.81 per Mcfe for 1999. The decrease was primarily due to sale of
properties in mid-1999 and reduced production volumes.

         Interest expense was $2,488,000 for the six months ended June 30, 2000,
compared to $10,547,000 for the comparable period in 1999. The $8,059,000 (76%)
decrease was primarily attributable to the termination of interest accrual on 10
1/4% notes which was partially offset by increase in bank interest rates on the
Company's revolver.


LIQUIDITY AND CAPITAL RESOURCES

         Due to the Company's sale of all of its oil and gas assets in June 2000
and the plan under which it is currently being liquidated, no information is
being provided.


ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

         Since the Company had no hedging instruments in place at December 31,
1999 or June 30, 2000, and due to the sale of all of its oil and gas assets in
June 2000, no information is provided.


                                       11
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                           PART II - OTHER INFORMATION


ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K


EXHIBITS
   NONE.



REPORTS ON FORM 8-K

         The Company has filed the following reports on Form 8-K during this
quarter:

         1. Form 8-K reporting the Dreyfus Sale, filed June 22, 2000.



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                                   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.


                                        COSTILLA ENERGY, INC.




Date:    March 30, 2001                 By:  /s/ BOBBY W. PAGE
                                             -----------------------------------
                                             Bobby W. Page
                                             Plan Trustee of the
                                             Costilla Liquidating Trust


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