<ARTICLE>                     5
<LEGEND>
This schedule contains summary financial information extracted from Swift Energy
Income Partners 1986-D, Ltd's balance sheet and statement of operations
contained in its Form 10-Q for the quarter ended September 30, 1996.
</LEGEND>
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                              DEC-31-1996
<PERIOD-END>                                   SEP-30-1996
<CASH>                                         1,000
<SECURITIES>                                   0
<RECEIVABLES>                                  184,431
<ALLOWANCES>                                   0
<INVENTORY>                                    0
<CURRENT-ASSETS>                               185,431
<PP&E>                                         12,954,592
<DEPRECIATION>                                 (10,484,114)
<TOTAL-ASSETS>                                 2,655,909
<CURRENT-LIABILITIES>                          97,449
<BONDS>                                        0
<PREFERRED-MANDATORY>                          0
<PREFERRED>                                    0
<COMMON>                                       0
<OTHER-SE>                                     2,433,896
<TOTAL-LIABILITY-AND-EQUITY>                   2,655,909
<SALES>                                        693,732
<TOTAL-REVENUES>                               706,581
<CGS>                                          0
<TOTAL-COSTS>                                  391,312<F1>
<OTHER-EXPENSES>                               0
<LOSS-PROVISION>                               0
<INTEREST-EXPENSE>                             0
<INCOME-PRETAX>                                216,095
<INCOME-TAX>                                   0
<INCOME-CONTINUING>                            216,095
<DISCONTINUED>                                 0
<EXTRAORDINARY>                                0
<CHANGES>                                      0
<NET-INCOME>                                   216,095
<EPS-PRIMARY>                                  0
<EPS-DILUTED>                                  0
<FN>
<F1>Includes lease operating expenses, production taxes and depreciation deple-
tion and amoritization expense.  Excludes general and administrative and interest
expense.
</FN>