<ARTICLE> 5 <LEGEND> This schedule contains summary financial information extracted from Swift Energy Income Partners 1988-B, Ltd.'s balance sheet and statement of operations con- tained in its Form 10-K for the year ended December 31, 1996 and is qualified in its entirety by reference to such financial statements. </LEGEND> <PERIOD-TYPE> YEAR <FISCAL-YEAR-END> DEC-31-1996 <PERIOD-END> DEC-31-1996 <CASH> 1,901 <SECURITIES> 0 <RECEIVABLES> 84,881 <ALLOWANCES> 0 <INVENTORY> 0 <CURRENT-ASSETS> 86,782 <PP&E> 6,988,216 <DEPRECIATION> (5,970,768) <TOTAL-ASSETS> 1,114,998 <CURRENT-LIABILITIES> 63,727 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 0 <OTHER-SE> 1,010,082 <TOTAL-LIABILITY-AND-EQUITY> 1,114,998 <SALES> 437,370 <TOTAL-REVENUES> 439,302 <CGS> 0 <TOTAL-COSTS> 345,226<F1> <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 27,600 <INCOME-TAX> 0 <INCOME-CONTINUING> 27,600 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 27,600 <EPS-PRIMARY> 0 <EPS-DILUTED> 0 <FN> <F1>Includes lease operating expenses, production taxes and depreciation, depletion and amortization expense. Excludes general and administrative and interest expense. </FN>