ACCOMPANYING CERTIFICATE
            PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

            Not Filed Pursuant to the Securities Exchange Act of 1934

The undersigned Chief Executive Officer of Harvest Natural Resources, Inc. (the
"Company") do hereby certify as follows:

Solely for the purpose of meeting the apparent requirements of Section 906 of
the Sarbanes-Oxley Act of 2002, and solely to the extent this certification may
be applicable to this Annual Report on Form 10-K, the undersigned hereby certify
that this Annual Report on Form 10-K fully complies with the requirements of
section 13(a) or 15(d) of the Securities Exchange Act of 1934 and the
information contained in this Annual Report on Form 10-K fairly presents, in all
material respects, the financial condition and results of operations of the
Company.


Dated:  March 28, 2003                  By: /s/ Peter J. Hill
                                           -------------------------------------
                                           Peter J. Hill
                                           President and Chief Executive Officer



                            ACCOMPANYING CERTIFICATE
            PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

            Not Filed Pursuant to the Securities Exchange Act of 1934

The undersigned Chief Financial Officer of Harvest Natural Resources, Inc. (the
"Company") do hereby certify as follows:

Solely for the purpose of meeting the apparent requirements of Section 906 of
the Sarbanes-Oxley Act of 2002, and solely to the extent this certification may
be applicable to this Annual Report on Form 10-K, the undersigned hereby certify
that this Annual Report on Form 10-K fully complies with the requirements of
section 13(a) or 15(d) of the Securities Exchange Act of 1934 and the
information contained in this Annual Report on Form 10-K fairly presents, in all
material respects, the financial condition and results of operations of the
Company.



Dated:  March 28, 2003                  By: /s/ Steven W. Tholen
                                           -------------------------------------
                                           Steven W. Tholen
                                           Senior Vice President and
                                           Chief Financial Officer