<ARTICLE> 5 <CIK> 0000833054 <NAME> GEODYNE ENERGY INCOME LIMITED PARTNERSHIP II-C <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-1997 <PERIOD-START> JAN-01-1997 <PERIOD-END> JUN-30-1997 <CASH> 348,041 <SECURITIES> 0 <RECEIVABLES> 282,574 <ALLOWANCES> 0 <INVENTORY> 0 <CURRENT-ASSETS> 630,615 <PP&E> 10,126,094 <DEPRECIATION> 8,288,156 <TOTAL-ASSETS> 2,633,506 <CURRENT-LIABILITIES> 44,424 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 0 <OTHER-SE> 2,519,934 <TOTAL-LIABILITY-AND-EQUITY> 2,633,506 <SALES> 942,166 <TOTAL-REVENUES> 1,038,285 <CGS> 0 <TOTAL-COSTS> 547,515 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 490,770 <INCOME-TAX> 0 <INCOME-CONTINUING> 490,770 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 490,770 <EPS-PRIMARY> 2.97 <EPS-DILUTED> 0