EXHIBIT 23.15 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation by reference in Devon Energy Corporation's Form S-4 of our report dated February 10, 1999, included in Snyder Oil Corporation's Form 10-K for the year ended December 31, 1998, and to all references to our Firm included in this Registration Statement. /s/ Arthur Andersen LLP Forth Worth, Texas June 22, 2000