<ARTICLE>                     5
       
                             
<PERIOD-TYPE>                                    9-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               SEP-30-1997
<CASH>                                         285,321
<SECURITIES>                                         0
<RECEIVABLES>                                3,370,932
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                             4,177,045
<PP&E>                                     109,357,426
<DEPRECIATION>                              63,715,369
<TOTAL-ASSETS>                              50,233,928
<CURRENT-LIABILITIES>                        1,331,389
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                    12,761,100
<OTHER-SE>                                           0
<TOTAL-LIABILITY-AND-EQUITY>                50,223,928
<SALES>                                     12,504,373
<TOTAL-REVENUES>                            13,590,332
<CGS>                                                0
<TOTAL-COSTS>                               11,644,952
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0 
<INTEREST-EXPENSE>                             550,458
<INCOME-PRETAX>                              1,394,922
<INCOME-TAX>                                   501,495
<INCOME-CONTINUING>                            893,427
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   893,427
<EPS-PRIMARY>                                      .07
<EPS-DILUTED>                                      .07