<ARTICLE> 5 <CIK> 0000863837 <NAME> GEODYNE ENERGY INCOME LIMITED PTSP III-C <PERIOD-TYPE> 12-MOS <FISCAL-YEAR-END> DEC-31-1998 <PERIOD-START> JAN-01-1998 <PERIOD-END> DEC-31-1998 <CASH> 340,720 <SECURITIES> 0 <RECEIVABLES> 380,975 <ALLOWANCES> 0 <INVENTORY> 0 <CURRENT-ASSETS> 721,695 <PP&E> 20,643,708 <DEPRECIATION> 17,863,863 <TOTAL-ASSETS> 3,572,389 <CURRENT-LIABILITIES> 68,191 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 0 <OTHER-SE> 3,352,527 <TOTAL-LIABILITY-AND-EQUITY> 3,572,389 <SALES> 2,447,005 <TOTAL-REVENUES> 2,925,761 <CGS> 0 <TOTAL-COSTS> 1,743,077 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 1,182,684 <INCOME-TAX> 0 <INCOME-CONTINUING> 1,182,684 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 1,182,684 <EPS-PRIMARY> 4.48 <EPS-DILUTED> 0