<TABLE> <S> <C>
<ARTICLE> 5
<CIK> 0000803095
<NAME> DYCO OIL AND GAS PROGRAM 1986-X
<S> <C>
<PERIOD-TYPE> 9-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> SEP-30-2000
<CASH> 54,800
<SECURITIES> 0
<RECEIVABLES> 27,210
<ALLOWANCES> 0
<INVENTORY> 0
<CURRENT-ASSETS> 82,010
<PP&E> 9,219,485
<DEPRECIATION> 9,162,238
<TOTAL-ASSETS> 152,439
<CURRENT-LIABILITIES> 11,146
<BONDS> 0
0
0
<COMMON> 0
<OTHER-SE> 123,428
<TOTAL-LIABILITY-AND-EQUITY> 152,439
<SALES> 114,339
<TOTAL-REVENUES> 115,108
<CGS> 0
<TOTAL-COSTS> 68,603
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 0
<INCOME-PRETAX> 46,505
<INCOME-TAX> 0
<INCOME-CONTINUING> 46,505
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 46,505
<EPS-BASIC> 23.01
<EPS-DILUTED> 0
</TABLE>