

                                                                      EXHIBIT 12

                OCCIDENTAL PETROLEUM CORPORATION AND SUBSIDIARIES
       COMPUTATION OF TOTAL ENTERPRISE RATIOS OF EARNINGS TO FIXED CHARGES
                      (Amounts in millions, except ratios)
<TABLE>
<CAPTION>
                                          Three Months Ended
                                                    March 31                                         Year Ended December 31
                                         ---------------------    ---------------------------------------------------------
                                              2000        1999         1999        1998        1997        1996        1995
--------------------------------------   ---------   ---------    ---------   ---------   ---------   ---------   ---------
<S>                                      <C>         <C>          <C>         <C>         <C>         <C>         <C>
Income (loss) from continuing
    operations(a)                        $     276   $     (20)   $     699   $     400   $     245   $     486   $     325
                                         ---------   ---------    ---------   ---------   ---------   ---------   ---------
Add:
    Provision (credit) for taxes on
      income (other than foreign
      and gas taxes)                           183           1          306         204          47          99         155
    Interest and debt expense(b)               110         130          515         576         446         492         591
    Portion of lease rentals
      representative of the interest
      factor                                     2           9           31          36          39          38          43
                                         ---------   ---------    ---------   ---------   ---------   ---------   ---------
                                               295         140          852         816         532         629         789
                                         ---------   ---------    ---------   ---------   ---------   ---------   ---------

Earnings (loss) before fixed charges     $     571   $     120    $   1,551   $   1,216   $     777   $   1,115   $   1,114
                                         =========   =========    =========   =========   =========   =========   =========
Fixed charges
    Interest and debt expense

      including capitalized
      interest(b)                        $     110   $     134    $     522   $     594   $     462   $     499   $     595
    Portion of lease rentals
      representative of the interest
      factor                                     2           9           31          36          39          38          43
                                         ---------   ---------    ---------   ---------   ---------   ---------   ---------

    Total fixed charges                  $     112   $     143    $     553   $     630   $     501   $     537   $     638
                                         =========   =========    =========   =========   =========   =========   =========

Ratio of earnings to fixed charges            5.10         n/a(c)      2.80        1.93        1.55        2.08        1.75(c)
--------------------------------------   =========   =========    =========   =========   =========   =========   =========
</TABLE>
(a)  Includes (1) minority interest in net income of majority-owned subsidiaries
     having fixed charges and (2) income from less-than-50-percent-owned equity
     investments adjusted to reflect only dividends received.
(b)  Includes proportionate share of interest and debt expense of
     50-percent-owned equity investments.
(c)  Not computed due to less than one-to-one coverage. Earnings were inadequate
     to cover fixed charges by $23 million for the three months ended March 31,
     1999.
