<ARTICLE>     5
<LEGEND>
ARTICLE 5 FINANCIAL DATA SCHEDULE (FDS) FOR PERIOD ENDED JUNE 30, 1999 10-Q
This schedule contains summary financial information extracted from the June
30, 1999 Form 10-Q, and is qualified in its entirety by reference to such
financial statements.
</LEGEND>
<CIK>          0000067182
<NAME>         JOYCE NICHOLS
<MULTIPLIER>   1,000,000

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                        DEC-31-1999
<PERIOD-END>                             JUN-30-1999
<CASH>                                                                   693
<SECURITIES>                                                               0
<RECEIVABLES>                                                          5,752
<ALLOWANCES>                                                               0
<INVENTORY>                                                            2,076
<CURRENT-ASSETS>                                                       9,152
<PP&E>                                                                49,230
<DEPRECIATION>                                                        24,304
<TOTAL-ASSETS>                                                        43,234
<CURRENT-LIABILITIES>                                                 14,106
<BONDS>                                                                3,723
<PREFERRED-MANDATORY>                                                      0
<PREFERRED>                                                              626
<COMMON>                                                                 900
<OTHER-SE>                                                            17,064
<TOTAL-LIABILITY-AND-EQUITY>                                          43,234
<SALES>                                                               25,957  <F1>
<TOTAL-REVENUES>                                                      26,429  <F1>
<CGS>                                                                 16,233
<TOTAL-COSTS>                                                         17,430
<OTHER-EXPENSES>                                                       5,361
<LOSS-PROVISION>                                                           0
<INTEREST-EXPENSE>                                                       159
<INCOME-PRETAX>                                                        1,727
<INCOME-TAX>                                                             514
<INCOME-CONTINUING>                                                    1,213
<DISCONTINUED>                                                             0
<EXTRAORDINARY>                                                            0
<CHANGES>                                                                  0
<NET-INCOME>                                                           1,213
<EPS-BASIC>                                                           1.54
<EPS-DILUTED>                                                           1.51
<FN>
<F1> SALES AND TOTAL REVENUES INCLUDE $2,974 MILLION OF EXCISE AND STATE
GASOLINE TAXES