Exhibit 23.5 Ryder Scott Company Petroleum Consultants 1100 Louisiana Fax (713) 651-0849 Suite 3800 Houston, TX 77002-5218 Telephone (713) 651-9191 CONSENT OF PETROLEUM CONSULTING FIRM We consent to the reference to our name included in this Annual Report on Form 10-K for the year ended December 31, 2003 for Geodyne Energy Income Limited Partnership II-E. //s// Ryder Scott Company, L.P. RYDER SCOTT COMPANY, L.P. Houston, Texas March 17, 2004