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


      The  undersigned  hereby certify,  pursuant to 18 U.S.C.  Section 1350, as
adopted pursuant to Section 906 of the  Sarbanes-Oxley Act of 2002, that, to the
undersigned's  best knowledge and belief,  the Quarterly Report on Form 10-Q for
the  Geodyne   Institutional/Pension   Energy  Income  Limited  Partnership  P-6
("Issuer")  for the period ending June 30, 2003 as filed with the Securities and
Exchange Commission on the date hereof (the "Report"):

      (a)   fully complies with the requirements of section 13(a) or 15(d) of
            the Securities Exchange Act of 1934; and
      (b)   the  information  contained in the Report  fairly  presents,  in all
            material respects, the financial condition and results of operations
            of the Issuer.

      Dated this 13th day of August, 2003.

                              GEODYNE INSTITUTIONAL/PENSION ENERGY
                              INCOME LIMITED PARTNERSHIP P-6
                              ("Issuer")

                              //s// Dennis R. Neill
                              -----------------------------------
                              Dennis R. Neill
                              President (Chief Executive Officer)

                              //s// Craig D. Loseke
                              -----------------------------------
                              Craig D. Loseke
                              Chief Accounting Officer
                              (Chief Financial Officer)

      A signed  original of this written  statement  required by Section 906 has
been   furnished  to  Geodyne   Institutional/Pension   Energy  Income   Limited
Partnership  P-6 and will be  retained by Geodyne  Institutional/Pension  Energy
Income  Limited  Partnership  P-6 and furnished to the  Securities  and Exchange
Commission or its staff upon request.