<TABLE> <S> <C>
<ARTICLE> 5
<CIK> 0000850427
<NAME> GEODYNE INSTIT/PENS ENERGY INCOME P-1 LTD PSHP
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> JUN-30-2000
<CASH> 208,577
<SECURITIES> 0
<RECEIVABLES> 249,221
<ALLOWANCES> 0
<INVENTORY> 0
<CURRENT-ASSETS> 457,798
<PP&E> 6,818,908
<DEPRECIATION> 5,880,811
<TOTAL-ASSETS> 1,395,895
<CURRENT-LIABILITIES> 0
<BONDS> 0
0
0
<COMMON> 0
<OTHER-SE> 1,395,895
<TOTAL-LIABILITY-AND-EQUITY> 1,395,895
<SALES> 583,666
<TOTAL-REVENUES> 600,954
<CGS> 0
<TOTAL-COSTS> 142,848
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 0
<INCOME-PRETAX> 458,106
<INCOME-TAX> 0
<INCOME-CONTINUING> 458,106
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 458,106
<EPS-BASIC> 3.76
<EPS-DILUTED> 0
</TABLE>