<ARTICLE> 5 <CIK> 0000773910 <NAME> ANADARKO PETROLEUM CORPORATION <MULTIPLIER> 1000 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1999 <PERIOD-END> SEP-30-1999 <CASH> 14,803 <SECURITIES> 0 <RECEIVABLES> 211,762 <ALLOWANCES> 0 <INVENTORY> 27,855 <CURRENT-ASSETS> 259,981 <PP&E> 5,733,300 <DEPRECIATION> 2,209,456 <TOTAL-ASSETS> 3,833,779 <CURRENT-LIABILITIES> 232,594 <BONDS> 1,405,305 <PREFERRED-MANDATORY> 0 <PREFERRED> 200,000 <COMMON> 12,946 <OTHER-SE> 1,294,883 <TOTAL-LIABILITY-AND-EQUITY> 3,833,779 <SALES> 477,818 <TOTAL-REVENUES> 477,818 <CGS> 293,336 <TOTAL-COSTS> 293,336 <OTHER-EXPENSES> 20,000 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 55,041 <INCOME-PRETAX> 37,198 <INCOME-TAX> 25,349 <INCOME-CONTINUING> 11,849 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 11,849 <EPS-BASIC> .03 <EPS-DILUTED> .03