Devon Energy (DVN) 10-Q 2009 Q2 Quarterly report

Exhibit 32.2

CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Report of Devon Energy Corporation (“Devon”) on Form 10-Q for the period ended June 30, 2009 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Danny J. Heatly, Senior Vice President — Accounting and Chief Accounting Officer of Devon, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1)	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 results of operations of Devon.

/s/ Danny J. Heatly                                                                                    
Danny J. Heatly
Senior Vice President — Accounting and Chief Accounting Officer
August 5, 2009