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                                                                    Exhibit 99.2

                                 [LOGO] HARKEN
                               Energy Corporation

                          Notice of Guaranteed Delivery
                                       For
                               Rights Certificates

     This form, or one substantially equivalent hereto, must be used to exercise
Rights pursuant to the Rights Offering described in the Prospectus dated
                  , 2003 (the "Prospectus") of Harken Energy Corporation, a
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Delaware corporation (the "Company"), if a holder of Rights cannot deliver the
certificate(s) evidencing the Rights (the "Rights Certificate(s)"), to the
Subscription Agent listed below (the "Subscription Agent") at or prior to 5:00
p.m., New York City time, on               , 2003, unless such time is extended
                             --------------
by the Company as described in the Prospectus (as it may be extended, the
"Expiration Date"). Such form must be delivered by hand or sent by telegram,
facsimile transmission, first class mail or overnight courier to the
Subscription Agent, and must be received by the Subscription Agent on or prior
to the Expiration Date. See "The Rights Offering - Method of Subscription -
Exercise of Rights" in the Prospectus.

     Payment of the Subscription Price for each share of the Company's Common
Stock subscribed for upon exercise of such Rights must be received by the
Subscription Agent in the manner specified in the Prospectus at or prior to 5:00
p.m., New York City time, on the Expiration Date even if the Rights
Certificate(s) evidencing such Rights is (are) being delivered pursuant to the
Guaranteed Delivery Procedures thereof. See "The Rights Offering - Method of
Subscription - Exercise of Rights" in the Prospectus.

                           The Subscription Agent is:

                     American Stock Transfer & Trust Company

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                  By mail, by hand or by overnight courier to:

                     American Stock Transfer & Trust Company
                             Attention: Rights Agent
                                 59 Maiden Lane
                              New York, N.Y. 10038

                     Facsimile Transmission: (718) 234-5001

                Telephone Number for Information: (800)    -
                                                        --- ----

                Telephone Number for Confirmation: (718) 921-8200

                                   ----------

     Delivery of this instrument to an address other than as set forth above
      above or transmission of this instrument via facsimile other than as
             set forth above does not constitute a valid delivery.

                                   ----------

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Ladies and Gentlemen:

     The undersigned hereby represents that the undersigned is the holder of
Rights Certificate(s) representing Rights and that such Rights Certificate(s)
cannot be delivered to the Subscription Agent at or before 5:00 p.m., New York
City time, on the Expiration Date. Upon the terms and subject to the conditions
set forth in the Prospectus, receipt of which is hereby acknowledged, the
undersigned hereby elects to exercise       Subscription Right(s) to subscribe
                                      -----
for                    share(s) of Common Stock with respect to the Rights
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represented by such Rights Certificate(s).

     The undersigned understands that payment of the Subscription Price for each
Right must be received by the Subscription Agent at or before 5:00 p.m., New
York City time, on the Expiration Date and represents that such payment, in the
aggregate amount of $             either (check appropriate box):
                     ------------

     [ ]  is being delivered to the Subscription Agent herewith; or

     [ ]  has been delivered separately to the Subscription Agent in the manner
          set forth below (check appropriate box and complete information
          relating thereto):

          [ ]  Wire transfer of funds
               Name of transferor institution:
                                               ---------------------------------
               Date of transfer:
                                 -----------------------------------------------
               Confirmation number (if available):
                                                   -----------------------------

          [ ]  Uncertified check
               Name of maker:
                              --------------------------------------------------
               Date of check:
                              --------------------------------------------------
               Check number:
                             ---------------------------------------------------
               Bank on which check is drawn:
                                             -----------------------------------

          [ ]  Certified check
               Name of maker:
                              --------------------------------------------------
               Date of check:
                              --------------------------------------------------
               Check number:
                             ---------------------------------------------------
               Bank on which check is drawn:
                                             -----------------------------------

          [ ]  Bank draft (cashier's check)
               Name of maker:
                              --------------------------------------------------
               Date of check:
                              --------------------------------------------------
               Check number:
                             ---------------------------------------------------
               Bank on which check is drawn:
                                             -----------------------------------

          [ ]  Money order
               Name of maker:
                             ---------------------------------------------------
               Date of check:
                             ---------------------------------------------------
               Check number:
                            ----------------------------------------------------
               Bank on which check is drawn:
                                            ------------------------------------

Signature(s)                              Address
             --------------------------           ------------------------------

             --------------------------           ------------------------------
Name(s)
             --------------------------           ------------------------------
                                                    Area Code and Tel. No(s).
             --------------------------

Rights Certificate No(s). (if available)
                                         ---------------------------------------

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                              Guarantee of Delivery
           (Not To Be Used For Rights Certificate Signature Guarantee)

     The undersigned, a member firm of a registered national securities exchange
or of the National Association of Securities Dealers, Inc., or a commercial bank
or trust company having an office or correspondent in the United States, or a
bank, stockbroker, savings and loan association or credit union with membership
in an approved signature guarantee medallion program, pursuant to Rule 17Ad-15
of the Securities Exchange Act of 1934, as amended, guarantees that the
undersigned will deliver to the Subscription Agent the certificates representing
the Rights being exercised hereby, with any required signature guarantee and any
other required documents, all within three (3) business days after the date
hereof.


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              (Address)                               (Name of Firm)

---------------------------------------   --------------------------------------
   (Area Code and Telephone Number)               (Authorized Signature)

     The institution which completes this form must communicate the guarantee to
the Subscription Agent and must deliver the Rights Certificate(s) to the
Subscription Agent within the time period shown in this prospectus. Failure to
do so could result in a financial loss to such institution.

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