<ARTICLE> 5
<LEGEND>
This Schedule Contains Summary Financial Information Extracted From Form 10-Q
For The Quarterly Period Ended September 30, 1998, And Is Qualified In Its
Entirety By Reference To Such Financial Statements
</LEGEND>
<MULTIPLIER> 1,000,000
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               SEP-30-1998
<CASH>                                             406
<SECURITIES>                                        90
<RECEIVABLES>                                    1,312<F1>
<ALLOWANCES>                                         0
<INVENTORY>                                      1,000
<CURRENT-ASSETS>                                 3,155
<PP&E>                                          22,012
<DEPRECIATION>                                  10,660
<TOTAL-ASSETS>                                  16,376
<CURRENT-LIABILITIES>                            3,115
<BONDS>                                          8,527<F2>
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                             0
<OTHER-SE>                                         545
<TOTAL-LIABILITY-AND-EQUITY>                    16,376
<SALES>                                         17,264
<TOTAL-REVENUES>                                17,515
<CGS>                                           10,378<F3>
<TOTAL-COSTS>                                   16,321<F4>
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 108
<INCOME-PRETAX>                                  1,086
<INCOME-TAX>                                       373
<INCOME-CONTINUING>                                713
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                       713
<EPS-PRIMARY>                                     1.14
<EPS-DILUTED>                                     1.12<F5>
<FN>
<F1>Includes Notes Receivable - Related Parties
<F2>Includes Long-Term borrows-Related Parties of $8,422
<F3>Includes Other Expenses
<F4>Cost of Goods Sold and Other Expenses; Depreciation, Depletion and
Amortization; Exploration Expenses, Including Dry-Hole Costs and Impairment of 
Unproved Properties; Selling, General and Administrative Expenses; and
Taxes Other Than On Income
<F5>Proforma Basic Earnings Per Share and Fully Diluted Earnings Per Share
</FN>