<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM
APPLICABLE FINANCIAL STATEMENTS AND IS QUALIFIED IN ITS ENTIRETY
BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               MAR-31-1998
<CASH>                                           3,929
<SECURITIES>                                         0
<RECEIVABLES>                                   62,503
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                                82,558
<PP&E>                                       1,875,918
<DEPRECIATION>                             (1,158,459)
<TOTAL-ASSETS>                                 831,629
<CURRENT-LIABILITIES>                          123,485
<BONDS>                                        309,120
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                         1,271
<OTHER-SE>                                     254,640
<TOTAL-LIABILITY-AND-EQUITY>                   831,629
<SALES>                                              0
<TOTAL-REVENUES>                                64,513
<CGS>                                                0
<TOTAL-COSTS>                                   73,682
<OTHER-EXPENSES>                                  (41)
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               5,225
<INCOME-PRETAX>                               (14,262)
<INCOME-TAX>                                     1,001
<INCOME-CONTINUING>                           (19,027)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                  (19,027)
<EPS-PRIMARY>                                    (.15)
<EPS-DILUTED>                                    (.15)