<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM MARCH 31,
1998 FORM 10-Q 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-START>                             JAN-01-1998
<PERIOD-END>                               MAR-31-1998
<CASH>                                           1,832
<SECURITIES>                                         0
<RECEIVABLES>                                   58,795
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                                71,202
<PP&E>                                       1,302,848
<DEPRECIATION>                                 409,516
<TOTAL-ASSETS>                                 989,593
<CURRENT-LIABILITIES>                           78,324
<BONDS>                                        467,924
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           258
<OTHER-SE>                                     376,429
<TOTAL-LIABILITY-AND-EQUITY>                   989,593
<SALES>                                         89,754
<TOTAL-REVENUES>                                90,103
<CGS>                                           48,034
<TOTAL-COSTS>                                   48,034
<OTHER-EXPENSES>                                44,518
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               9,077
<INCOME-PRETAX>                                (11,526)
<INCOME-TAX>                                    (4,934)
<INCOME-CONTINUING>                             (6,592)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    (6,592)
<EPS-PRIMARY>                                     (.13)
<EPS-DILUTED>                                     (.13)