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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549


                                    FORM 8-K

                                 CURRENT REPORT


     PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934


      Date of Report (Date of earliest event reported):  December 19, 2001



                             PLAINS RESOURCES INC.
               (Exact name of registrant as specified in charter)



               DELAWARE                           13-2898764
       (State of Incorporation)     (I.R.S. Employer Identification No.)

                                    0-9808
                             (Commission File No.)


                          500 DALLAS STREET, SUITE 700
                              HOUSTON, TEXAS 77002
                    (Address of Principal Executive Offices)
                                   (Zip Code)


      REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE:  (713) 654-1414


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ITEM 9.  REGULATION FD DISCLOSURE

       In accordance with General Instruction B.2. of Form 8-K, the following
information shall not be deemed "filed" for purposes of Section 18 of the
Securities Act of 1934, as amended, nor shall it be deemed incorporated by
reference in any filing under the Securities Act of 1933, as amended, except as
shall be expressly set forth by specific reference in such a filing.


FORWARD-LOOKING STATEMENTS AND ASSOCIATED RISKS

       All statements, other than statements of historical fact, included in
this report are forward-looking statements, including, but not limited to,
statements identified by the words "anticipate," "believe," "estimate,"
"expect," "plan," "intend" and "forecast" and similar expressions and
statements regarding our business strategy, plans and objectives of our
management for future operations. These statements reflect our current views
with respect to future events, based on what we believe are reasonable
assumptions. These statements, however, are subject to certain risks,
uncertainties and assumptions, including, but not limited to:

 .  uncertainties inherent in the exploration for and development and production
   of oil and gas and in estimating reserves;

 .  unexpected future capital expenditures (including the amount and nature
   thereof);

 .  impact of crude oil and natural gas price fluctuations;

 .  the effects of competition;

 .  the success of our risk management activities;

 .  the availability (or lack thereof) of acquisition or combination
   opportunities;

 .  the impact of current and future laws and governmental regulations;

 .  environmental liabilities that are not covered by an indemnity or insurance;
   and

 .  general economic, market or business conditions.

  If one or more of these risks or uncertainties materialize, or if underlying
assumptions prove incorrect, actual results may vary materially from those in
the forward-looking statements. Except as required by applicable securities
laws, we do not intend to update these forward-looking statements and
information.

DISCLOSURE OF YEAR 2002 ESTIMATES

The following table reflects the Company's current estimates of certain results
for the first quarter of 2002 and the year ending December 31, 2002. These
estimates are based on assumptions and estimates that management believes are
reasonable based on currently available information; however, management's
assumptions and the Company's future performance are both subject to a wide
range of business risks and uncertainties and there is no assurance that these
goals and estimates can or will be met. Any number of factors could cause actual
results to differ materially from those in the following table. The estimates
set forth below are given as of the date hereof only based on information
available as of the date hereof. The Company undertakes no obligation to
publicly update or revise any forward-looking statements. Further information on
risks and uncertainties is available in the Company's filings with the
Securities and Exchange Commission ("SEC"), which are incorporated by reference
herein.

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                       OPERATING AND FINANCIAL GUIDANCE


                                                                              QUARTER ENDED         YEAR ENDED
                                                                              MARCH 31, 2002     DECEMBER 31, 2002
                                                                              --------------     -----------------
                                                                                           
ESTIMATED SALES VOLUMES
Barrels of oil equivalent - MBOE                                                  2,450-2,500        10,000-10,200
MBOE PER DAY                                                                        27.2-27.8            27.4-27.9
% Oil                                                                                      94%                  94%
% Gas                                                                                       6%                   6%

ESTIMATED OIL PRICE DIFFERENTIALS - $/BBL
Estimated Differentials to NYMEX Prices - pre hedge                             $5.25 - $5.75        $5.00 - $5.50
Estimated Hedging gain (loss) based on: ($ in thousands)
  $16.00 NYMEX                                                                        $12,960              $52,560
  $17.00 NYMEX                                                                        $11,250              $45,630
  $18.00 NYMEX                                                                         $9,540              $38,695
  $19.00 NYMEX                                                                         $7,830              $31,760
  $20.00 NYMEX                                                                         $6,120              $24,825
  $25.00 NYMEX                                                                        ($1,529)             ($6,200)

CRUDE OIL HEDGE POSITIONS - BARRELS PER DAY
Puts - Floor $20.00                                                                     2,000                2,000
Swaps - Average price $24.00 per barrel                                                17,000               17,000
Calls - Average price $35.17 per barrel                                                 9,000                9,000

OPERATING COSTS PER BOE
Production expenses                                                             $7.75 - $8.00        $7.75 - $8.00
General and administrative                                                      $1.40 - $1.25        $1.25 - $1.35
DD&A - oil and gas                                                                     Note 6               Note 6

OTHER INCOME (EXPENSE) ($ IN THOUSANDS)
Equity in earnings of Plains All American Pipeline, L.P. ("PAA")                       Note 7               Note 7
DD&A - other                                                                              500                2,000
Interest expense                                                                       Note 8               Note 8

BOOK TAX RATE
Current                                                                                     1%                   1%
Deferred                                                                                   39%                  39%

WEIGHTED AVERAGE EQUIVALENT SHARES OUTSTANDING (IN THOUSANDS)
Basic                                                                                  23,600               23,600
Diluted                                                                                25,100               25,100

CAPITAL EXPENDITURES ($ IN THOUSANDS)                                       $28,000 - $32,000    $75,000 - $77,000

DISTRIBUTIONS FROM PLAINS ALL AMERICAN PIPELINE, L.P. ($ IN THOUSANDS)                 $6,900              $27,600



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Notes:

1.  Estimated Sales Volumes. Production estimates are based on historical
    operating performance and trends and the Company's 2002 capital budget and
    assume that market demand and prices for oil and gas will continue at levels
    that allow for profitable production of these products.

    SEC Staff Accounting Bulletin 101 ("SAB 101") requires that revenue from
    crude oil production be recognized as the volumes are sold versus when
    produced. Due to the location of the Company's Florida properties and the
    transportation issues involved, reported sales volumes are impacted by the
    timing of the barges that transport the crude oil. The Florida crude is
    typically sold in shipments of approximately 130,000 barrels.

2.  Estimated Oil Price Differentials. The Company's realized wellhead crude oil
    price is lower than the NYMEX index level as a result of area and quality
    differentials. The Company has locked in a fixed price differential to NYMEX
    on approximately 65% of its estimated 2002 production volumes. Estimated
    average differentials by area for 2002 are: Onshore California - $4.50 per
    barrel, Offshore California - $7.30 per barrel, Florida - $11.20 per barrel,
    and Illinois - $1.20 per barrel and are based on current market conditions.

3.  Crude Oil Hedge Positions. The Company has hedged approximately 73% of its
    estimated 2002 crude oil production. The estimated hedging gain (loss) is
    calculated based on the NYMEX prices presented and the Company's current
    crude oil hedge positions. The hedging gain (loss) has not been adjusted for
    approximately $1.5 million of option premiums that will be amortized as a
    charge to oil revenues in 2002.

4.  Production expenses. The Company estimates that production expenses
    (including production and ad valorem taxes) will average $7.75-$8.00 per BOE
    during 2002, an increase of approximately $0.40-$0.65 per BOE over the 2001
    average. The increase is primarily related to electric costs, ad valorem
    taxes and insurance. The Company expects to obtain electricity for certain
    of its operations in California through a direct access contract with an
    electric service provider. The Company's production expenses will increase
    from the estimates provided if the California Public Utility Commission
    ("CPUC") rules that such direct access contract is invalid or if the CPUC
    assesses exit fees related to the direct access contract.

5.  General and administrative. Unit G&A costs are expected to average $1.25-
    $1.35 per BOE in 2002, approximately $0.05 per BOE higher than the 2001
    average. Unit G&A costs for the first quarter of 2002 are expected to
    average $1.40-$1.50 per BOE primarily due to expenses associated with year-
    end audit and reporting that are incurred during the first quarter of the
    year.

6.  DD&A - oil and gas. DD&A per BOE averaged $2.64 for the first nine months of
    2001. The 2002 DD&A rate will be based on year-end 2001 proved reserve
    volumes. For estimate purposes, we are utilizing the $2.64 rate and will
    provide additional guidance when the 2001 reserve information is reported.

7.  Other Income (expense). The Company's equity in earnings from PAA will be
    based on PAA's reported net income and the Company's aggregate ownership
    interest, as adjusted for general partner incentive distributions. Guidance
    for equity in earnings of PAA will be provided at a later date once PAA
    provides guidance for 2002 net income. The Company currently has an
    aggregate

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    ownership interest of approximately 29%, consisting of (i) a 44% ownership
    stake in the general partner interest and incentive distribution rights,
    (ii) 45%, or approximately 4.5 million, of the subordinated units and (iii)
    24%, or approximately 7.9 million of the common units. Although PAA has not
    provided guidance for net income, they did provide guidance of $123 million
    to $126 million for 2002 EBITDA in their November 7, 2001 conference call.

8.  Interest expense. The Company's interest expense will consist of interest
    on:

    a.  $267.5 million of 10.25% senior subordinated notes ($275 million
        outstanding, net of $7.5 million held by the Company).

    b.  Amounts outstanding on the Company's $225 million revolving credit
        facility ("Credit Facility"). The Company estimates that the outstanding
        balance on Credit Facility will be approximately $20 million at December
        31, 2001. The Credit Facility bears interest at LIBOR plus 1-3/8%. The
        Company incurs a non-use fee of 3/8ths of 1% per annum on the Credit
        Facility. In October 2001, the Company entered into a three-year
        interest rate swap agreement which fixes the interest rate on $7.5
        million of borrowings at 5.62% including the LIBOR margin.

    c.  The Company estimates it will capitalize approximately $3.2 million of
        interest in 2002.

9.  Book Tax Rate. The Company's book tax rate is based on a Federal rate of
    35% and an estimated combined foreign and state rate of 4%. The foreign tax
    is attributable to the Canadian operations of PAA. The Company's deferred
    and current tax rates are based on current estimates of taxable income and
    utilization of net operating loss carryforwards.

10. Equivalent weighted average shares outstanding. Estimated basic shares
    outstanding are based on shares outstanding on November 30, 2001, net of
    treasury shares. Estimated diluted shares are based on basic shares
    outstanding, plus shares issuable upon conversion of preferred stock and
    outstanding options and warrants utilizing the treasury stock method for the
    options and warrants.

11. Distributions from Plains All American Pipeline, L.P. The estimated cash
    distributions are based on PAA's $0.5125 per unit quarterly distribution
    that was declared in October 2001. PAA indicated in its November 7, 2001
    conference call that it is well positioned to generate a double-digit growth
    in annual distributions. The amounts presented reflect estimated cash
    payments to be received from PAA and have not been adjusted for cash taxes
    attributable to the Company's equity in earnings of PAA.

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                                   SIGNATURES

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


                                PLAINS RESOURCES INC.



Date:  December 19, 2001        /s/ Cynthia A. Feeback
                                -----------------------------------------------
                                Cynthia A. Feeback
                                Senior Vice President--Accounting and Treasurer


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