Harvest Natural Resources (HNR) 10-Q 2007 Q3 Quarterly report

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-Q of Harvest Natural Resources, Inc. for the period ended September 30, 2007 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: November 1, 2007

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