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, 2006 for Geodyne Institutional/Pension
Energy Income Limited Partnership P-6.


                              //s// Ryder Scott Company, L.P.

                              RYDER SCOTT COMPANY, L.P.




Houston, Texas
March 23, 2007