EXHIBIT 99.1


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[OXY LOGO]  NEWS RELEASE                        OCCIDENTAL PETROLEUM CORPORATION
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         10889 Wilshire Boulevard, Los Angeles, California 90024  (310) 208-8800

For Immediate Release: October 21, 2004

                         OCCIDENTAL PETROLEUM ANNOUNCES
                         ------------------------------
                        RECORD THIRD QUARTER 2004 RESULTS
                        ---------------------------------

     LOS ANGELES -- Occidental Petroleum Corporation (NYSE:OXY) announced record
net income for the third quarter 2004 of $758 million ($1.91 per share),
compared with $446 million ($1.16 per share) for the third quarter 2003.
Earnings of $1.83 billion ($4.63 per share) for the first nine months of 2004
were 55 percent higher than the $1.15 billion ($2.99 per share) the company
earned in the comparable period last year.

     In announcing the results, Dr. Ray R. Irani, chairman and chief executive
officer, said, "Earnings of $758 million, $1.91 per share, were 65 percent
higher than the third quarter 2003. High oil prices and robust gas prices, plus
improved chemical margins, contributed to the record high income for both the
third quarter and the nine month period. Oil and gas production per day was up 3
percent for the quarter and 5 percent year-to-date over the comparable periods
last year."

     Core earnings for the first nine months of 2004 were $1.81 billion ($4.60
per share), compared with $1.25 billion ($3.27 per share) for 2003. The
debt-to-total capitalization at the end of the third quarter was 29 percent,
compared with 37 percent at the end of last year. Interest expense of $187
million for the first nine months of 2004 was 31 percent lower than the
comparable 2003 period.

                                   OIL AND GAS
                                   -----------

     Oil and gas segment earnings were $1.0 billion for the third quarter 2004,
compared with $660 million for the third quarter 2003, an increase of 52
percent. The improvement in the third quarter 2004 earnings reflected higher
worldwide


crude oil and natural gas prices, partially offset by increased DD&A rates and
higher operating costs.

                                    CHEMICALS
                                    ---------

     Chemical segment earnings were $137 million for the third quarter 2004,
compared with $61 million for the third quarter 2003, an increase of 125
percent. The improvement in the third quarter 2004 was primarily due to higher
sales prices and margins in chlorine, ethylene dichloride, polyvinyl chloride
and vinyl chloride monomer, partially offset by higher ethylene and energy
costs. Chemical earnings of $272 million for the nine months were almost double
that of 2003.

     See the attached schedules for a reconciliation of net income to core
earnings for the third quarter and nine months.

                                       -0-

Contacts: Lawrence P. Meriage (media)
          310-443-6562
          Kenneth J. Huffman (investors)
          212-603-8183
          For further analysis of Occidental's quarterly
          performance, please visit the website: www.oxy.com

Statements in this release that contain words such as "will" or "expect", or
otherwise relate to the future, are forward-looking and involve risks and
uncertainties that could significantly affect expected results. Factors that
could cause results to differ materially include, but are not limited to: global
commodity pricing fluctuations and supply/demand considerations for oil, gas and
chemicals; higher-than-expected costs; political risk; and not successfully
completing (or any material delay in) any expansion, capital expenditure,
acquisition, or disposition. Occidental disclaims any obligation to update any
forward-looking statements.


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SUMMARY OF SEGMENT NET SALES AND EARNINGS



                                              Third Quarter               Nine Months
($ millions, except                   ---------------------     ---------------------
 per-share amounts)                       2004         2003         2004         2003
=================================     ========     ========     ========     ========
                                                                 
SEGMENT NET SALES
  Oil and gas                         $  2,033     $  1,480     $  5,509     $  4,473
  Chemical                                 973          793        2,767        2,368
  Other                                     27           46           87          115
                                      --------     --------     --------     --------
  Net sales                           $  3,033     $  2,319     $  8,363     $  6,956
=================================     ========     ========     ========     ========
SEGMENT EARNINGS
  Oil and gas                         $  1,003     $    660     $  2,567     $  2,024
  Chemical                                 137           61          272          139
                                      --------     --------     --------     --------
                                         1,140          721        2,839        2,163
UNALLOCATED CORPORATE ITEMS
  Interest expense, net (a)--
    debt and trust preferred
    distributions                          (59)         (71)        (187)        (270)
  Income taxes (b)                        (274)        (160)        (673)        (505)
  Other                                    (49)         (44)        (153)        (175)
                                      --------     --------     --------     --------

Income from Continuing Operations          758          446        1,826        1,213
Cumulative effect of changes in
   accounting principles, net               --           --           --          (68)
                                      --------     --------     --------     --------
NET INCOME                            $    758     $    446     $  1,826     $  1,145
                                      ========     ========     ========     ========
BASIC EARNINGS PER COMMON SHARE
  Income from continuing
    operations                        $   1.91     $   1.16     $   4.63     $   3.17
  Cumulative effect of changes in
    accounting principles, net              --           --           --        (0.18)
                                      --------     --------     --------     --------
                                      $   1.91     $   1.16     $   4.63     $   2.99
                                      ========     ========     ========     ========
DILUTED EARNINGS PER COMMON SHARE
  Income from continuing
    operations                        $   1.88     $   1.14     $   4.57     $   3.14
  Cumulative effect of changes in
    accounting principles, net              --           --           --        (0.18)
                                      --------     --------     --------     --------
                                      $   1.88     $   1.14     $   4.57     $   2.96
                                      ========     ========     ========     ========
AVERAGE BASIC COMMON SHARES
  OUTSTANDING                            396.3        385.5        394.1        382.6
=================================     ========     ========     ========     ========

See footnotes on following page.


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(a)  The third quarter 2004 includes a $2 million pre-tax interest charge to
     purchase in the open market and retire $19 million of Occidental's senior
     notes and a $3 million pre-tax interest charge to redeem all the $157
     million outstanding 6.5 percent senior notes which were due in 2005. The
     nine months 2004 also includes an $11 million pre-tax interest charge to
     redeem all the outstanding 8.16 percent Trust Preferred Redeemable
     Securities on January 20, 2004. The nine months 2003 includes a $61 million
     pre-tax interest charge to repay a $450 million 6.4 percent senior notes
     issue that had ten years of remaining life, but was subject to re-marketing
     on April 1, 2003.

(b)  The nine months 2004 includes a $20 million credit related to a first
     quarter settlement of an issue with the Internal Revenue Service. The nine
     months 2004 also reflected a lower U.S. income tax rate resulting from the
     crediting of foreign income taxes.


SUMMARY OF CAPITAL EXPENDITURES AND DD&A EXPENSE



                                             Third Quarter              Nine Months
                                     ---------------------     ---------------------
($ millions)                             2004         2003         2004         2003
================================     ========     ========     ========     ========
                                                                
CAPITAL EXPENDITURES                 $    467     $    360     $  1,271     $  1,151
                                     ========     ========     ========     ========
DEPRECIATION, DEPLETION
 AND AMORTIZATION
  OF ASSETS                          $    322     $    295     $    972     $    866
================================     ========     ========     ========     ========



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SUMMARY OF OPERATING STATISTICS
                                                 Third Quarter               Nine Months
                                         ---------------------     ---------------------
                                             2004         2003         2004         2003
====================================     ========     ========     ========     ========
                                                                    
NET OIL, GAS AND LIQUIDS
  PRODUCTION PER DAY

United States
  Crude oil and liquids (MBBL)
    California                                 77           80           77           79
    Permian                                   154          151          155          150
    Horn Mountain                              17           24           22           19
    Hugoton                                     3            4            3            4
                                         --------     --------     --------     --------
      Total                                   251          259          257          252

  Natural Gas (MMCF)
    California                                228          248          235          254
    Hugoton                                   124          136          128          141
    Permian                                   122          134          131          128
    Horn Mountain                              14           16           15           12
                                         --------     --------     --------     --------
      Total                                   488          534          509          535

Latin America
  Crude oil (MBBL)
    Colombia                                   38           31           37           35
    Ecuador                                    49           27           46           20
                                         --------     --------     --------     --------
      Total                                    87           58           83           55

Middle East
  Crude oil (MBBL)
    Oman                                       14           13           13           12
    Qatar                                      44           44           44           47
    Yemen                                      28           34           33           36
                                         --------     --------     --------     --------
      Total                                    86           91           90           95

  Natural Gas (MMCF)
    Oman                                       88           --           52           --

Other Eastern Hemisphere
  Crude oil (MBBL)
    Pakistan                                    7           10            8           10

  Natural Gas (MMCF)
    Pakistan                                   73           71           74           74

BARRELS OF OIL EQUIVALENT (MBOE)
  Subtotal consolidated subsidiaries          539          519          544          514
  Other Interests
    Colombia-minority interest                 (4)          (4)          (5)          (4)
    Russia-Occidental net interest             27           30           29           30
    Yemen-Occidental net interest               1            1            1            1
                                         --------     --------     --------     --------
TOTAL WORLDWIDE PRODUCTION (MBOE)             563          546          569          541
====================================     ========     ========     ========     ========



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SIGNIFICANT TRANSACTIONS AND EVENTS AFFECTING EARNINGS

Occidental's results of operations often include the effects of significant
transactions and events affecting earnings that vary widely and unpredictably in
nature, timing, and amount. Therefore, management uses a measure called "core
earnings", which excludes those items. This non-GAAP measure is not meant to
disassociate those items from management's performance, but rather is meant to
provide useful information to investors interested in comparing Occidental's
earnings performance between periods. Reported earnings are considered
representative of management's performance over the long term. Core earnings is
not considered to be an alternative to operating income in accordance with
generally accepted accounting principles.

The following table sets forth the core earnings and significant items affecting
earnings for each operating segment and corporate:



                                                                       Third Quarter
($ millions, except                  -----------------------------------------------
 per-share amounts)                      2004          EPS         2003          EPS
================================     ========     ========     ========     ========
                                                                
TOTAL REPORTED EARNINGS              $    758     $   1.91     $    446     $   1.16
                                     ========     ========     ========     ========
OIL AND GAS
  Segment Earnings                   $  1,003                  $    660
  No significant items
    affecting earnings                     --                        --
                                     --------                  --------
  Segment Core Earnings                 1,003                       660
                                     --------                  --------
CHEMICALS
  Segment Earnings                        137                        61
  No significant items
    affecting earnings                     --                        --
                                     --------                  --------
  Segment Core Earnings                   137                        61
                                     --------                  --------
CORPORATE
  Results                                (382)                     (275)
  No significant items
    affecting earnings                     --                        --
                                     --------                  --------
TOTAL CORE EARNINGS                  $    758     $   1.91     $    446     $   1.16
================================     ========     ========     ========     ========


 * These amounts are shown after-tax.


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SIGNIFICANT TRANSACTIONS AND EVENTS AFFECTING EARNINGS (CONTINUED)



                                                                         Nine Months
($ millions, except                  -----------------------------------------------
 per-share amounts)                      2004          EPS         2003          EPS
================================     ========     ========     ========     ========
                                                                
TOTAL REPORTED EARNINGS              $  1,826     $   4.63     $  1,145     $   2.99
                                     ========     ========     ========     ========
OIL AND GAS
  Segment Earnings                   $  2,567                  $  2,024
  No significant items
    affecting earnings                     --                        --
                                     --------                  --------
  Segment Core Earnings                 2,567                     2,024
                                     --------                  --------
CHEMICALS
  Segment Earnings                        272                       139
  No significant items
    affecting earnings                     --                        --
                                     --------                  --------
  Segment Core Earnings                   272                       139
                                     --------                  --------
CORPORATE
  Results                              (1,013)                   (1,018)
  Less:
    6.4% senior note remarket fee          --                       (61)
    Trust preferred redemption
      charge                              (11)                       --
    IRS settlement                         20                        --
    Tax effect of pre-tax adjustment        4                        21
    Changes in accounting
      principles, net*                     --                       (68)
                                     --------                  --------
TOTAL CORE EARNINGS                  $  1,813     $   4.60     $  1,253     $   3.27
================================     ========     ========     ========     ========


 * These amounts are shown after-tax.


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ITEMS AFFECTING COMPARABILITY OF CORE EARNINGS BETWEEN PERIODS



                                             Third Quarter               Nine Months
                                     ---------------------     ---------------------
($ millions)                             2004         2003         2004         2003
================================     ========     ========     ========     ========
                                                                
PRE-TAX
INCOME / (EXPENSE)

OIL AND GAS
  Gain on sale of GOM assets (a)     $     --     $     --     $     --     $     14

CHEMICALS
  Chlorine derivatives asset
    impairment                             --           --           --           (9)
  Reorganizations/severance                --           --           --          (15)

CORPORATE
  Environmental remediation                --           --           --          (13)
  Equity earnings                          15           (6)          13          (42)
  Interest expense - early debt
    extinguishments - 2004/
    consolidation of variable
    interest entity - 2003                 (5)          --           (5)           6


(a) Net of tax.


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