Anadarko Exhibit 99.1 June 30, 2002 CEO/CFO Oaths

EX-99 4 anadarko_exhibit99-063002.htm ANADARKO EXHIBIT 99 JUNE 30, 2002 - OATHS Anadarko Exhibit 99.1 June 30, 2002 CEO/CFO Oaths Exhibit 99

CERTIFICATION OF PERIODIC REPORT

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350, John N. Seitz, President and Chief Executive Officer of Anadarko Petroleum Corporation (the "Company") and Michael E. Rose, Executive Vice President and Chief Financial Officer of the Company, certify that:

(1) the Quarterly Report on Form 10-Q of the Company for the period ending June 30, 2002, as 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

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Company.

August 14, 2002	/s/ John N. Seitz
	John N. Seitz
	President and Chief Executive Officer



August 14, 2002	/s/ Michael E. Rose
	Michael E. Rose
	Executive Vice President and Chief
	Financial Officer