EXHIBIT 32.2

                            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") does hereby certify as follows:

      This report on Form 10-K of Harvest Natural Resources, Inc. for the period
ended December 31, 2005 and filed with the Securities and Exchange Commission on
the date hereof (the "Report") fully complies with the requirements of Section
13(a) or 15(d) of the Securities Exchange Act of 1934 and the information
contained in the Report fairly presents, in all material respects, the financial
condition and results of operations of the Company.

Dated: February 27, 2006          By:  /s/ Steven W. Tholen
                                       -----------------------------------------
                                       Steven W. Tholen
                                       Senior Vice President - Finance,
                                       Chief Financial Officer and Treasurer