SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 10-Q

              [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

                  For the quarterly period ended March 31, 2005

                                       OR

              [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

            For the transition period from ___________ to ___________

                          Commission file number 1-9210

                              ---------------------

                        OCCIDENTAL PETROLEUM CORPORATION
             (Exact name of registrant as specified in its charter)

                  DELAWARE                               95-4035997
       (State or other jurisdiction of                (I.R.S. Employer
       incorporation or organization)                 Identification No.)

             10889 WILSHIRE BOULEVARD
              LOS ANGELES, CALIFORNIA                            90024
     (Address of principal executive offices)                  (Zip Code)

                                 (310) 208-8800
              (Registrant's telephone number, including area code)

                              ---------------------

     Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.            Yes [X]    No [ ]

     Indicate by check mark whether the registrant is an accelerated filer (as
defined in Rule 12b-2 of the Exchange Act).          Yes [X]    No [ ]

     Indicate the number of shares outstanding of each of the issuer's classes
of common stock, as of the latest practicable date.

                 Class                           Outstanding at March 31, 2005
- ---------------------------------------        ---------------------------------
      Common stock $.20 par value                      398,251,720 shares





                OCCIDENTAL PETROLEUM CORPORATION AND SUBSIDIARIES


                                    CONTENTS



                                                                                            
                                                                                               PAGE

PART I         FINANCIAL INFORMATION

               Item 1.   Financial Statements

                         Consolidated Condensed Balance Sheets --
                              March 31, 2005 and December 31, 2004                               2

                         Consolidated Condensed Statements of Income --
                              Three months ended March 31, 2005 and 2004                         4

                         Consolidated Condensed Statements of Cash Flows --
                              Three months ended March 31, 2005 and 2004                         5

                         Notes to Consolidated Condensed Financial Statements                    6

               Item 2.   Management's Discussion and Analysis of Financial
                              Condition and Results of Operations                               14

               Item 3.   Quantitative and Qualitative Disclosures About Market Risk             25

               Item 4.   Controls and Procedures                                                25


PART II        OTHER INFORMATION

               Item 1.   Legal Proceedings                                                      26

               Item 6.   Exhibits                                                               26



                                       1



                          PART I FINANCIAL INFORMATION

ITEM 1.   FINANCIAL STATEMENTS

                OCCIDENTAL PETROLEUM CORPORATION AND SUBSIDIARIES
                      CONSOLIDATED CONDENSED BALANCE SHEETS
                      MARCH 31, 2005 AND DECEMBER 31, 2004
                              (Amounts in millions)



                                                                                           2005           2004
================================================================================     ==========     ==========
                                                                                              
ASSETS

CURRENT ASSETS

     Cash and cash equivalents                                                       $    1,092     $    1,199

     Short-term investments                                                                 270            250

     Receivables, net                                                                     2,561          2,235

     Inventories                                                                            531            545

     Prepaid expenses and other                                                             183            166

     Assets held for sale                                                                    17             36
                                                                                     ----------     ----------

          Total current assets                                                            4,654          4,431


LONG-TERM RECEIVABLES, net                                                                  238            239



INVESTMENTS IN UNCONSOLIDATED ENTITIES                                                    1,906          1,727



PROPERTY, PLANT AND EQUIPMENT, net of accumulated
     depreciation, depletion and amortization of $8,962 at
     March 31, 2005 and $8,626 at December 31, 2004                                      15,105         14,633

OTHER ASSETS                                                                                374            361




                                                                                     ----------     ----------

                                                                                     $   22,277     $   21,391
================================================================================     ==========     ==========


The accompanying notes are an integral part of these financial statements.


                                       2



                OCCIDENTAL PETROLEUM CORPORATION AND SUBSIDIARIES
                      CONSOLIDATED CONDENSED BALANCE SHEETS
                      MARCH 31, 2005 AND DECEMBER 31, 2004
                              (Amounts in millions)



                                                                                           2005           2004
================================================================================     ==========     ==========
                                                                                              
LIABILITIES AND EQUITY

CURRENT LIABILITIES
     Current maturities of long-term debt and capital lease liabilities              $       --     $      459
     Accounts payable                                                                     1,545          1,557
     Accrued liabilities                                                                  1,253          1,123
     Domestic and foreign income taxes                                                      527            263
     Liabilities held for sale                                                               15             21
                                                                                     ----------     ----------

         Total current liabilities                                                        3,340          3,423
                                                                                     ----------     ----------

LONG-TERM DEBT, net of current maturities and unamortized discount                        3,365          3,345
                                                                                     ----------     ----------

DEFERRED CREDITS AND OTHER LIABILITIES
     Deferred and other domestic and foreign income taxes                                 1,203          1,248
     Other                                                                                2,781          2,498
                                                                                     ----------     ----------

                                                                                          3,984          3,746
                                                                                     ----------     ----------



MINORITY INTEREST                                                                           347            327
                                                                                     ----------     ----------



STOCKHOLDERS' EQUITY
     Common stock, at par value                                                              79             79
     Additional paid-in capital                                                           4,713          4,652
     Retained earnings                                                                    6,387          5,664
     Accumulated other comprehensive income                                                  62            155
                                                                                     ----------     ----------

                                                                                         11,241         10,550
                                                                                     ----------     ----------

                                                                                     $   22,277     $   21,391
================================================================================     ==========     ==========

The accompanying notes are an integral part of these financial statements.


                                       3



                OCCIDENTAL PETROLEUM CORPORATION AND SUBSIDIARIES
                   CONSOLIDATED CONDENSED STATEMENTS OF INCOME
               FOR THE THREE MONTHS ENDED MARCH 31, 2005 AND 2004
                 (Amounts in millions, except per-share amounts)



                                                                                           2005           2004
================================================================================     ==========     ==========
                                                                                              
REVENUES
     Net sales                                                                       $    3,303     $    2,557
     Interest, dividends and other income                                                    37             23
                                                                                     ----------     ----------
                                                                                          3,340          2,580
                                                                                     ----------     ----------
COSTS AND OTHER DEDUCTIONS
     Cost of sales                                                                        1,532          1,380
     Selling, general and administrative and other operating expenses                       276            225
     Environmental remediation                                                                9             --
     Exploration expense                                                                     47             54
     Interest and debt expense, net                                                          75             71
                                                                                     ----------     ----------
                                                                                          1,939          1,730
                                                                                     ----------     ----------
Income before taxes and other items                                                       1,401            850
Provision for domestic and foreign income and other taxes                                   601            363
Minority interest                                                                            21             13
(Income)/loss from equity investments                                                       (71)           (15)
                                                                                     ----------     ----------
Income from continuing operations                                                           850            489
Discontinued operations, net                                                                 (4)            (2)
                                                                                     ----------     ----------
NET INCOME                                                                           $      846     $      487
                                                                                     ==========     ==========


BASIC EARNINGS PER COMMON SHARE
     Income from continuing operations                                               $     2.12     $     1.25
     Discontinued operations, net                                                          (.01)          (.01)
                                                                                     ----------     ----------
Basic earnings per common share                                                      $     2.11     $     1.24
                                                                                     ==========     ==========

DILUTED EARNINGS PER COMMON SHARE
     Income from continuing operations                                               $     2.09     $     1.24
     Discontinued operations, net                                                          (.01)          (.01)
                                                                                     ----------     ----------
Diluted earnings per common share                                                    $     2.08     $     1.23
                                                                                     ==========     ==========


DIVIDENDS PER COMMON SHARE                                                           $      .31     $     .275
                                                                                     ==========     ==========


BASIC SHARES                                                                              400.4          391.5
                                                                                     ==========     ==========


DILUTED SHARES                                                                            406.3          397.2
================================================================================     ==========     ==========


The accompanying notes are an integral part of these financial statements.


                                       4



                OCCIDENTAL PETROLEUM CORPORATION AND SUBSIDIARIES
                 CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS
               FOR THE THREE MONTHS ENDED MARCH 31, 2005 AND 2004
                              (Amounts in millions)



                                                                                           2005           2004
================================================================================     ==========     ==========
                                                                                              
CASH FLOW FROM OPERATING ACTIVITIES
     Income from continuing operations                                               $      850     $      489
     Adjustments to reconcile income to net cash provided by operating
     activities:
          Depreciation, depletion and amortization of assets                                344            324
          Deferred income tax provision                                                      30             25
          Other non-cash charges to income                                                  152             91
          Gains on disposition of assets, net                                                (4)            (1)
          Income from equity investments                                                    (71)           (15)
          Dry hole and impairment expense                                                    31             42
     Changes in operating assets and liabilities                                            (29)            68
     Other operating, net                                                                   (64)           (50)
                                                                                     ----------     ----------
          Operating cash flow from continuing operations                                  1,239            973
          Operating cash flow from discontinued operations                                   (5)            (8)
                                                                                     ----------     ----------
          Net cash provided by operating activities                                       1,234            965
                                                                                     ----------     ----------

CASH FLOW FROM INVESTING ACTIVITIES
     Capital expenditures                                                                  (536)          (343)
     Purchase of businesses, net                                                           (321)          (138)
     Sales of businesses and disposal of property, plant, and equipment, net                  4              2
     Purchase of short-term investments                                                     (41)           (63)
     Sales of short-term investments                                                         21             80
     Equity investments and other investing, net                                             27           (232)
                                                                                     ----------     ----------
          Net cash used by investing activities                                            (846)          (694)
                                                                                     ----------     ----------

CASH FLOW FROM FINANCING ACTIVITIES
     Proceeds from long-term debt                                                            46             --
     Repurchase of trust preferred securities                                                --           (466)
     Payments on long-term debt and capital lease liabilities                              (459)            --
     Proceeds from issuance of common stock                                                   1              2
     Cash dividends paid                                                                   (109)          (101)
     Stock options exercised                                                                 27             99
     Other                                                                                   (1)            (1)
                                                                                     ----------     ----------
          Net cash used by financing activities                                            (495)          (467)
                                                                                     ----------     ----------

Decrease in cash and cash equivalents                                                      (107)          (196)

Cash and cash equivalents--beginning of period                                            1,199            573
                                                                                     ----------     ----------

Cash and cash equivalents--end of period                                             $    1,092     $      377
================================================================================     ==========     ==========


The accompanying notes are an integral part of these financial statements.


                                       5



                OCCIDENTAL PETROLEUM CORPORATION AND SUBSIDIARIES
              NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS

                                 March 31, 2005

1.   General

     In these unaudited consolidated condensed financial statements,
     "Occidental" means Occidental Petroleum Corporation (OPC) and/or one or
     more entities where it owns a majority voting interest. Certain information
     and disclosures normally included in notes to consolidated financial
     statements have been condensed or omitted pursuant to the Securities and
     Exchange Commission's rules and regulations, but resultant disclosures are
     in accordance with accounting principles generally accepted in the United
     States of America as they apply to interim reporting. The consolidated
     condensed financial statements should be read in conjunction with the
     consolidated financial statements and the notes thereto in Occidental's
     Annual Report on Form 10-K for the year ended December 31, 2004 (2004 Form
     10-K).

     In the opinion of Occidental's management, the accompanying consolidated
     condensed financial statements contain all adjustments (consisting only of
     normal recurring adjustments) necessary to fairly present Occidental's
     consolidated financial position as of March 31, 2005, and the consolidated
     statements of income and cash flows for the three months then ended. The
     income and cash flows for the period ended March 31, 2005, are not
     necessarily indicative of the income or cash flows to be expected for the
     full year.

     Certain financial statements and notes for the prior year have been
     reclassified to conform to the 2005 presentation.

     Occidental has reclassified its auction rate security investments from cash
     and cash equivalents to short-term investments on its March 31, 2005
     balance sheet. These investments contain a short-term repricing feature. As
     a result, their carrying values approximate their fair values. There have
     been no realized gains or losses on these investments during 2005 or 2004.
     Prior period financial statements have also been reclassified to conform to
     the current presentation. This reclassification resulted in no change to
     Occidental's results of operations or cash flow from operations for any
     period.

     Refer to Note 1 to the consolidated financial statements in the 2004 Form
     10-K for a summary of significant accounting policies.


2.   Asset Acquisitions, Dispositions and Other Transactions

     In the first quarter of 2005, Occidental made several oil and gas
     acquisitions in the Permian Basin for approximately $304 million in cash.

     In the first quarter of 2005, Occidental redeemed all of its 7.65 percent
     senior notes which reduced current maturities of long-term debt by
     approximately $459 million. This resulted in an after-tax charge of $6
     million.


3.   Accounting Changes

     In April 2005, the FASB issued FASB Staff Position No. (FSP) FAS 19-1,
     "Accounting for Suspended Well Costs." FSP FAS 19-1 specifies new
     accounting guidance for when successful efforts companies can capitalize
     exploratory well costs. The guidance also requires new disclosures related


                                       6



     to these costs. FSP FAS 19-1 is effective in the first reporting period
     beginning after April 4, 2005 and should be applied prospectively to
     existing and new exploratory well costs. Occidental plans to adopt this
     statement effective July 1, 2005 and it is not expected to have a material
     effect on the financial statements upon adoption.

     In March 2005, the FASB issued FASB Interpretation No. (FIN) 47,
     "Accounting for Conditional Asset Retirement Obligations." FIN 47 specifies
     the accounting treatment for conditional asset retirement obligations under
     the provisions of Statement of Accounting Standard (SFAS) No. 143. FIN 47
     is effective no later than the end of fiscal years ending after December
     15, 2005. Occidental plans to adopt this statement effective December 31,
     2005. Occidental is currently assessing the effect of FIN 47 on its
     financial statements.

     In December 2004, the FASB issued SFAS No. 123 (revised 2004) (SFAS No.
     123R) "Share-Based Payments." SFAS No. 123R requires that the cost from all
     share-based payment transactions, including stock options, be recognized in
     the financial statements at fair value. Occidental currently uses the
     intrinsic-value method to account for these share-based payments. SFAS No.
     123R is effective for public companies at the beginning of the first fiscal
     year ending after June 15, 2005. Occidental will adopt the provisions of
     this statement effective January 1, 2006. Occidental anticipates adopting
     SFAS No. 123R using the modified prospective method, which will not require
     Occidental to restate prior periods. Occidental is currently assessing the
     effect of SFAS No. 123R on its financial statements.


4.   Comprehensive Income

     The following table presents Occidental's comprehensive income items (in
     millions):



     Three Months Ended March 31,                                      2005           2004
     =======================================================     ==========     ==========
                                                                          
     Net income                                                  $      846     $      487
     Other comprehensive income items
           Foreign currency translation adjustments                     (12)            (7)
           Derivative mark-to-market adjustments                       (184)            (2)
           Unrealized gain on securities                                103             29
                                                                 ----------     ----------
     Other comprehensive income, net of tax                             (93)            20
                                                                 ----------     ----------
     Comprehensive income                                        $      753     $      507
     =======================================================     ==========     ==========


     During the first quarter of 2005, Occidental entered into a series of fixed
     price swaps and costless collar agreements that qualify as cash-flow hedges
     for the sale of its crude oil production. These hedges, which begin in July
     2005 and continue to the end of 2011, will hedge less than 4% of
     Occidental's current crude oil production. The first quarter 2005
     derivative mark-to-market adjustment includes an after-tax loss of $176
     million from changes in these cash flow hedges. See Item 3. Quantitative
     and Qualitative Disclosures About Market Risk for further information.


5.   Supplemental Cash Flow Information

     During the three months ended March 31, 2005 and 2004, net cash payments
     for federal, foreign and state income taxes were approximately $108 million
     and $64 million, respectively. Interest paid (net of interest capitalized
     of $3 million and $2 million, respectively) totaled approximately $98
     million and $83 million for the three months ended March 31, 2005 and 2004,
     respectively.


                                       7



6.   Inventories

     A portion of inventories is valued under the LIFO method. The valuation of
     LIFO inventory for interim periods is based on Occidental's estimates of
     year-end inventory levels and costs. Inventories consist of the following
     (in millions):



     Balance at                                 March 31, 2005          December 31, 2004
     ===================================     ====================     ====================
                                                                     
     Raw materials                                $       60               $       62
     Materials and supplies                              165                      157
     Finished goods                                      360                      380
                                                  ----------               ----------
                                                         585                      599
     LIFO reserve                                        (54)                     (54)
                                                  ----------               ----------
     Total                                        $      531               $      545
     ===================================          ==========               ==========



7.   Asset Retirement Obligations

     The following summarizes the activity of the asset retirement obligations
     of which $7 million and $4 million is included in accrued liabilities at
     March 31, 2005 and 2004, respectively, and the remaining balance is
     included in deferred credits and other liabilities - other (in millions):



     Three Months Ended March 31,                                           2005           2004
     ============================================================     ==========     ==========
                                                                               
     Beginning balance                                                $      206     $      167
     Liabilities incurred in the period                                        1              9
     Liabilities settled in the period                                        (1)            (3)
     Acquisition and other                                                     1             16
     Accretion expense                                                         3              3
                                                                      ----------     ----------
     Ending balance                                                   $      210     $      192
     ============================================================     ==========     ==========



8.   Environmental Expenditures

     Occidental's operations in the United States are subject to stringent
     federal, state and local laws and regulations relating to improving or
     maintaining environmental quality. Foreign operations also are subject to
     environmental-protection laws. The laws that require or address
     environmental remediation may apply to past waste disposal practices and
     releases. In many cases, the laws apply regardless of fault, legality of
     the original activities or current ownership or control of sites. OPC or
     certain of its subsidiaries are currently participating in environmental
     assessments and cleanups under these laws at sites subject to the federal
     Comprehensive Environmental Response, Compensation, and Liability Act
     (CERCLA), comparable state sites and other domestic and foreign remediation
     sites, including Occidental facilities and previously owned sites.


                                       8



     The following table presents Occidental's environmental remediation
     reserves at March 31, 2005, the current portion of which ($76 million) is
     included in accrued liabilities. The remaining amount is included in
     deferred credits and other liabilities - other. The reserves are grouped by
     three categories of environmental remediation sites ($ amounts in
     millions):



                                                # of Sites           Reserve
     ===================================     ===============     ===============
                                                           
     CERCLA &  Equivalent Sites                       124           $     240
     Active Facilities                                 16                  73
     Closed or Sold Facilities                         39                  63
                                             ---------------     ---------------
          Total                                       179           $     376
     ===================================     ===============     ===============


     In determining the environmental remediation reserves and the reasonably
     possible range of loss, Occidental refers to currently available
     information, including relevant past experience, available technology,
     regulations in effect, the timing of remediation and cost-sharing
     arrangements. Occidental expects it may continue to incur additional
     liabilities beyond those recorded for environmental remediation at these
     and other sites. The range of reasonably possible loss for existing
     environmental remediation matters could be up to $375 million beyond the
     amount accrued.

     The following table shows additional detail regarding reserves for CERCLA
     or CERCLA-equivalent proceedings in which OPC or certain of its
     subsidiaries were involved at March 31, 2005 ($ amounts in millions):



      Description                           # of Sites          Reserve
     ===================================     ===============     ===============
                                                           
     Minimal/No Exposure (a)                           99           $       6
     Reserves between $1-10 MM                         18                  69
     Reserves over $10 MM                               7                 165
                                             ---------------     ---------------
          Total                                       124           $     240
     ===================================     ===============     ===============


     (a)  Includes 27 sites for which Maxus Energy Corporation has retained the
          liability and indemnified Occidental, 7 sites where Occidental has
          denied liability without challenge, 52 sites where Occidental's
          reserves are less than $50,000 each, and 13 sites where reserves are
          between $50,000 and $1 million each.


     Refer to Note 8 to the consolidated financial statements in the 2004 Form
     10-K for additional information regarding Occidental's environmental
     expenditures.


9.   Lawsuits, Claims, Commitments, Contingencies and Related Matters

     OPC and certain of its subsidiaries have been named in a substantial number
     of lawsuits, claims and other legal proceedings. These actions seek, among
     other things, compensation for alleged personal injury, breach of contract,
     property damage, punitive damages, civil penalties or other losses; or
     injunctive or declaratory relief. OPC and certain of its subsidiaries also
     have been named in proceedings under CERCLA and similar federal, state,
     local and foreign environmental laws. These environmental proceedings seek
     funding or performance of remediation and, in some cases, compensation for
     alleged property damage, punitive damages and civil penalties; however,
     Occidental is usually one of many companies in these proceedings and has to
     date been successful in sharing response costs with other financially-sound
     companies. With respect to all such lawsuits, claims and proceedings,
     including environmental proceedings, Occidental accrues reserves when it is
     probable a liability has been incurred and the amount of loss can be
     reasonably estimated.

     In September 2004, Occidental received formal notification from
     Petroecuador, the state oil company of Ecuador, initiating proceedings to
     determine if Occidental had violated its Participation Contract for Block
     15 or the Ecuadorian Hydrocarbons Law and whether the alleged violations
     constitute grounds for terminating the Participation Contract. The
     principal allegation stated in the notice is an assertion


                                       9



     that Occidental should have obtained government approval of a farmout
     agreement entered into in 2000. Occidental believes that it has complied
     with all material obligations under the Participation Contract and
     Ecuadorian law and that any termination of the contract based upon the
     stated allegations would be unfounded and would constitute an unlawful
     expropriation. Earlier this year, Occidental made preliminary settlement
     proposals to the Government of Ecuador as a potential framework to resolve
     this dispute. It is reasonably possible that a negotiated settlement would
     negatively affect the future profitability of, and production and reserves
     from, Block 15 operations. On April 20, 2005, in the midst of significant
     public protests, Ecuador's Congress removed the country's President from
     office, and the country's Vice President became President. A new cabinet
     has not been fully formed, and Occidental has not been able to determine
     what position the new Government will take regarding foreign investors, the
     petroleum industry in general and Occidental's dispute in particular.
     Block 15 operations represent approximately 9 percent of Occidental's 2004
     consolidated production, 4 percent of its proved consolidated reserves and
     2 percent of its total property, plant and equipment, net of accumulated
     depreciation, depletion and amortization.

     In April 2004, a number of U.S. companies, including Occidental Chemical
     Corporation (OxyChem), were served with seven lawsuits filed in Nicaragua
     by approximately two thousand individual plaintiffs. These individuals
     allege that they have sustained several billion dollars of personal injury
     damages as a result of their alleged exposure to a pesticide. In the
     opinion of management, these claims are without merit because, among other
     things, OxyChem believes that none of the pesticide it manufactured was
     ever sold or used in Nicaragua. Under the applicable Nicaraguan statute,
     defendants are required to pay pre-trial deposits so large as to
     effectively prohibit defendants from participating fully in their defense.
     In similar situations, involving other defendants, Nicaraguan courts have
     proceeded to enter significant judgments against the defendants under that
     statute. OxyChem has filed a response to the complaints contesting
     jurisdiction without posting such pre-trial deposit. In December 2004, the
     judge in one of the cases ruled the court had jurisdiction over the
     defendants, including OxyChem, and that the plaintiffs had waived the
     requirement of the pre-trial deposit. OxyChem has appealed that portion of
     the ruling relating to the jurisdiction of the Nicaraguan courts.
     Thereafter, the trial court ordered defendants, including OxyChem, to file
     an answer. In order to preserve its jurisdictional defense, OxyChem elected
     not to make a substantive appearance in the case. In the opinion of
     management, any judgment rendered under the statute would be unenforceable
     in the United States.

     During the course of its operations, Occidental is subject to audit by tax
     authorities for varying periods in various federal, state, local and
     foreign tax jurisdictions. Taxable years prior to 1997 are closed for U.S.
     federal income tax purposes. Taxable years 1997 through 2003 are in various
     stages of audit by the Internal Revenue Service. Disputes arise during the
     course of such audits as to facts and matters of law. Occidental has been
     in continuing tax audit settlement discussions with the Internal Revenue
     Service on issues related to foreign tax credits and various domestic
     income issues for the 1997 to 2000 audit years. Occidental believes that it
     is reasonably possible that substantive issues for taxable years 1997 to
     2000 could be favorably resolved during 2005 and that such resolutions, if
     they occur, could have a positive and material effect on its results of
     operations and its financial condition; however, Occidental believes such
     resolutions will not have a significant cash effect.

     Occidental has guarantees outstanding at March 31, 2005, which encompass
     performance bonds, letters of credit, indemnities, commitments and other
     forms of guarantees provided by Occidental to third parties, mainly to
     provide assurance that Occidental and/or its subsidiaries and affiliates
     will meet their various obligations (guarantees). At March 31, 2005, the
     notional amount of these guarantees was approximately $500 million. Of this
     amount, approximately $400 million relates to Occidental's guarantees of
     equity investees' debt and other commitments. The remaining $100 million
     relates to various indemnities and guarantees provided to third parties.


                                       10



     It is impossible at this time to determine the ultimate liabilities that
     OPC and its subsidiaries may incur resulting from any lawsuits, claims and
     proceedings, audits, commitments, contingencies and related matters. If
     these matters were to be ultimately resolved unfavorably at amounts
     substantially exceeding Occidental's reserves, an outcome not currently
     anticipated, it is possible that such outcome could have a material adverse
     effect upon Occidental's consolidated financial position or results of
     operations. However, after taking into account reserves, management does
     not expect the ultimate resolution of any of these matters to have a
     material adverse effect upon Occidental's consolidated financial position
     or results of operations.


10.  Income Taxes

     The provision for taxes based on income for the 2005 and 2004 interim
     periods was computed in accordance with Interpretation No. 18 of Accounting
     Principles Board Opinion (APB) No. 28 on reporting taxes for interim
     periods and was based on projections of total year pretax income. The
     provision for income taxes for the first quarter of 2005 includes a $10
     million charge related to a state income tax issue. The provision for
     income taxes for the first quarter of 2004 includes a $20 million credit
     from settlement of a tax issue.


11.  Stock-Based Compensation

     Occidental accounts for its stock incentive plans (Plans) using the
     intrinsic value method under APB No. 25 and related interpretations. Had
     compensation expense for those Plans been determined in accordance with
     SFAS No. 123, "Accounting for Stock Based Compensation", Occidental's
     pro-forma net income and earnings per share would have been as follows (in
     $ millions, except per share amounts):



     Three Months Ended March 31,                                 2005           2004
     ==================================================     ==========     ==========
                                                                     
     Net income                                             $      846     $      487
     Add: Stock-based compensation included in net
     income, net of tax, under APB No. 25                           35              9
     Deduct : Stock-based compensation, net of tax,
     determined under SFAS No. 123 fair value method               (38)           (13)
                                                            ----------     ----------
     Pro-forma net income                                   $      843     $      483
     ==================================================     ==========     ==========

     Earnings Per Share:
          Basic - as reported                               $     2.11     $     1.24
          Basic - pro forma                                 $     2.11     $     1.23

          Diluted - as reported                             $     2.08     $     1.23
          Diluted - pro forma                               $     2.08     $     1.22
     --------------------------------------------------     ----------     ----------



                                       11



12.  Retirement Plans and Postretirement Benefits

     Occidental has various defined benefit and defined contribution retirement
     plans for its salaried, domestic union and nonunion hourly, and certain
     foreign national employees.

     The following table sets forth the components of the net periodic benefit
     costs for Occidental's defined benefit pension and postretirement benefit
     plans as of March 31 (in millions):



     Three Months Ended March 31,                         2005                               2004
     ===================================     ==============================     ==============================
                                               Pension       Postretirement      Pension        Postretirement
     Net Periodic Benefit Cost                 Benefit          Benefit          Benefit           Benefit
     ===================================     ==========     ===============     ==========     ===============
                                                                                   
     Service cost                            $        3     $             2     $        3     $             2
     Interest cost                                    6                   8              6                   8
     Expected return on plan assets                  (7)                 --             (5)                 --
     Recognized actuarial (gain) / loss               1                   4              1                   3
                                             ----------     ---------------     ----------     ---------------
          Total                              $        3     $            14     $        5     $            13
     ===================================     ==========     ===============     ==========     ===============


     On December 8, 2003, President Bush signed into law a bill that expands
     Medicare, primarily adding a prescription drug benefit for
     Medicare-eligible retirees starting in 2006. Regulations governing the
     Medical Prescription drug benefit and other key elements of the Medicare
     Modernization Act were released by the Department of Health and Human
     Services Centers for Medicare and Medicaid Services on January 21, 2005.
     Occidental is reviewing its retiree health care plans in light of these
     final regulations, which may change Occidental's obligations under the
     plans. At this time, Occidental is unable to determine the impact of the
     new Medicare provisions. The retiree medical obligations and costs reported
     do not reflect the impact of this legislation in accordance with FSP No.
     FAS 106-2. Occidental intends to adopt the accounting requirements of this
     standard and adjust its retiree medical obligations and costs during the
     second quarter of 2005.

     Occidental funded approximately $2 million in cash to its domestic defined
     benefit pension plans for the quarter ended March 31, 2005 and it does not
     expect to contribute any further amount in 2005.

     Refer to Note 13 to the consolidated financial statements in the 2004 Form
     10-K for additional information regarding Occidental's retirement plans and
     postretirement benefits.


                                       12



13.  Industry Segments

     As of January 1, 2005, Occidental revised its reporting of segment earnings
     to show segment earnings before income taxes. All domestic and foreign
     income tax expense is now reflected in the "Corporate and other" column.
     This change has been retrospectively applied to prior period results. The
     following table presents Occidental's interim industry segment and
     corporate disclosures (in millions):



                                                                                             Corporate
                                                    Oil and Gas           Chemical           and Other               Total
     ========================================     ===============     ===============     ===============       ===============
                                                                                                    
     Quarter ended March 31, 2005
          Net sales                               $         2,219     $         1,061     $            23       $         3,303
                                                  ===============     ===============     ===============       ===============
          Pretax operating profit (loss)          $         1,349     $           214     $          (112)(a)   $         1,451
          Income taxes                                         --                  --                (601)(b)              (601)
          Discontinued operations, net                         --                  --                  (4)                   (4)
                                                  ---------------     ---------------     ---------------       ---------------
          Net income (loss)                       $         1,349     $           214     $          (717)(c)   $           846
     ========================================     ===============     ===============     ===============       ===============
     Quarter ended March 31, 2004
          Net sales                               $         1,693     $           834     $            30       $         2,557
                                                  ===============     ===============     ===============       ===============
          Pretax operating profit (loss)          $           915     $            56     $          (119)(a)   $           852
          Income taxes                                         --                  --                (363)(b)              (363)
          Discontinued operations, net                         --                  --                  (2)                   (2)
                                                  ---------------     ---------------     ---------------       ---------------
          Net income (loss)                       $           915     $            56     $          (484)(d)   $           487
     ========================================     ===============     ===============     ===============       ===============


(a)  Includes unallocated net interest expense, administration expense and other
     items.

(b)  Includes all foreign and domestic income taxes. The 2005 amount includes a
     $10 million charge related to a state income tax issue. The 2004 amount
     includes a $20 million tax credit settlement.

(c)  Includes a $10 million pre-tax interest charge to redeem 7.65 percent
     senior notes ($6 million net of tax).

(d)  Includes a trust preferred securities redemption pre-tax charge of $11
     million ($7 million net of tax).


14.  Subsequent Events

     In April 2005, Valero Energy Corp. (Valero) and Premcor Inc. (Premcor)
     announced that the companies have executed a merger agreement for Valero to
     acquire Premcor in an $8 billion transaction. Under the terms of the
     agreement, Premcor shareholders will have the right to receive 0.99 shares
     of Valero common stock or $72.76 in cash for each share of Premcor common
     stock, or they can receive a combination of both, subject to proration so
     that 50 percent of the total Premcor shares are acquired for cash. At March
     31, 2005, Occidental owned over 9 million shares of Premcor.

     In April 2005, Occidental signed a heads of agreement with the government
     of Oman to develop the Mukhaizna oil field in Oman. If the terms of the
     understanding are implemented, Occidental would be operator of the field.

     In May 2005, Dolphin Energy Limited signed a gas sales agreement with Dubai
     Supply Authority (DUSUP) to deliver future supplies of Dolphin gas from
     Qatar to the DUSUP power plant in Jebel Ali. The agreement provides for the
     supply of up to 700 million standard cubic feet of gas per day for a period
     of 25 years.


                                       13




ITEM 2.   MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS

CONSOLIDATED RESULTS OF OPERATIONS

Occidental (as defined in Note 1 to the consolidated condensed financial
statements) reported net income for the first quarter of 2005 of $846 million,
on net sales of $3.3 billion, compared with net income of $487 million, on net
sales of $2.6 billion, for the same period of 2004. Basic earnings per common
share were $2.11 for the first quarter of 2005, compared with basic earnings per
common share of $1.24 for the same period of 2004.

Net income for the first quarter of 2005 included a $10 million pre-tax interest
charge to redeem outstanding 7.65 percent senior notes and a $10 million charge
related to a state income tax issue. Net income for the first quarter of 2004
included a pre-tax charge of $11 million for the redemption of all of the
outstanding 8.16 percent Trust Preferred Redeemable Securities (trust preferred
securities) and a $20 million credit from settlement of a tax issue. Net income
for the first quarter of 2005, compared to the same period in 2004, reflected
higher oil and gas prices and higher chemical margins resulting from higher
chemical prices.

SELECTED INCOME STATEMENT ITEMS

The increase of $746 million in net sales in the first quarter of 2005, compared
with the same period in 2004, primarily reflected higher worldwide crude oil,
natural gas and chemical prices.

The increase of $152 million in cost of sales for the first quarter of 2005,
compared with the same period in 2004, primarily reflected higher oil and gas
production costs, higher energy and chemical raw material costs and higher DD&A
expense mainly due to accelerated drilling and workovers in Yemen and Elk Hills
and a facility expansion in Qatar. The increase of $51 million in selling,
general and administrative and other operating expenses for the first quarter of
2005, compared to the same period in 2004, primarily reflected increases in
various oil and gas costs, including production-related taxes and other
operating costs. Interest and debt expense, net for the first quarter of 2005
included a pre-tax debt redemption charge of $10 million and for the first
quarter of 2004 included a trust preferred securities redemption pre-tax charge
of $11 million. The provision for income taxes for the first quarter of 2005
included a $10 million charge related to a state tax issue and the first quarter
of 2004 included a $20 million credit from settlement of a tax issue. The
increase of $56 million in income from equity investments for the first quarter
of 2005, compared to the same period in 2004, was attributable primarily to
first quarter 2005 income of $44 million from the Lyondell equity investment
compared to a loss of $3 million in the first quarter of 2004.

SELECTED ANALYSIS OF FINANCIAL POSITION

The increase in receivables, net of $326 million at March 31, 2005, compared
with December 31, 2004, was due to higher sales prices. The increase of $179
million in investments in unconsolidated entities at March 31, 2005, compared
with December 31, 2004, was due to increased equity investee income and a fair
value adjustment recorded in other comprehensive income on the Premcor Inc.
available-for-sale investment, partially offset by dividends received from
equity investees.

The increase in domestic and foreign income taxes payable of $264 million at
March 31, 2005, compared with December 31, 2004, was due to the fact that the
first estimated payment for federal and state income taxes is not paid until
April 2005.


                                       14



SEGMENT OPERATIONS

As of January 1, 2005, Occidental revised its reporting of segment earnings to
show segment earnings before income taxes. All domestic and foreign income tax
expense is now reflected in the income taxes line under Unallocated Corporate
Items. This reporting change has been retrospectively applied to prior period
results. The following table sets forth the sales and earnings of each industry
segment and unallocated corporate items (in millions):



                                                                                            Three Months Ended
                                                                                                      March 31
                                                                                     -------------------------
                                                                                           2005           2004
================================================================================     ==========     ==========
                                                                                              
NET SALES
 Oil and gas                                                                         $    2,219     $    1,693
 Chemical                                                                                 1,061            834
 Other                                                                                       23             30
                                                                                     ----------     ----------

NET SALES                                                                            $    3,303     $    2,557
                                                                                     ==========     ==========
SEGMENT EARNINGS
 Oil and gas                                                                         $    1,349     $      915
 Chemical                                                                                   214             56
                                                                                     ----------     ----------
                                                                                          1,563            971
UNALLOCATED CORPORATE ITEMS
 Interest expense, net (a)                                                                  (61)           (68)
 Income taxes (b)                                                                          (601)          (363)
 Other                                                                                      (51)           (51)
                                                                                     ----------     ----------
INCOME FROM CONTINUING OPERATIONS                                                           850            489
Discontinued operations, net                                                                 (4)            (2)
                                                                                     ----------     ----------

NET INCOME                                                                           $      846     $      487
================================================================================     ==========     ==========


(a)  The first quarter 2005 includes a $10 million pre-tax interest charge to
     redeem all the outstanding 7.65 percent senior notes. The first quarter
     2004 includes an $11 million pre-tax interest charge to redeem the trust
     preferred securities.

(b)  The first quarter 2005 includes a $10 million charge related to a state
     income tax issue. The first quarter 2004 includes a $20 million credit
     related to the settlement of an issue with the Internal Revenue Service.


                                       15



SIGNIFICANT ITEMS 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 and other:



                                                                                        Three Months Ended March 31
                                                            -------------------------------------------------------
(in millions, except per share amounts)                           2005            EPS           2004            EPS
=======================================================     ==========     ==========     ==========     ==========
                                                                                             
TOTAL REPORTED EARNINGS                                     $      846     $     2.11     $      487     $     1.24
                                                            ==========     ==========     ==========     ==========

OIL AND GAS
Segment Earnings                                            $    1,349                    $      915
No significant items affecting earnings                             --                            --
                                                            ----------                    ----------
Segment Core Earnings                                            1,349                           915
                                                            ----------                    ----------

CHEMICAL
Segment Earnings                                                   214                            56
No significant items affecting earnings                             --                            --
                                                            ----------                    ----------
Segment Core Earnings                                              214                            56
                                                            ----------                    ----------

CORPORATE AND OTHER
Results                                                           (717)                         (484)
Less:
     Trust preferred securities redemption charge                   --                           (11)
     7.65% debt redemption charge                                  (10)                           --
     State tax issue charge                                        (10)                           --
     Settlement of tax issue                                        --                            20
     Tax effect of pre-tax adjustments                               4                             4
     Discontinued operations, net *                                 (4)                           (2)
                                                            ----------                    ----------
Corporate Core Results                                            (697)                         (495)
                                                            ----------                    ----------

TOTAL CORE EARNINGS                                         $      866     $     2.16     $      476     $     1.22
=======================================================     ==========     ==========     ==========     ==========


*    These amounts are shown after tax


                                       16



WORLDWIDE EFFECTIVE TAX RATE

The following table sets forth the calculation of the worldwide effective tax
rate for reported income and core earnings:



                                                                                              Three Months Ended
                                                                                                        March 31
                                                                                     ----------------------------
(in millions)                                                                              2005           2004
================================================================================     ==========     ==========
                                                                                              
REPORTED INCOME

Oil & Gas (a)                                                                        $    1,349     $      915
Chemicals                                                                                   214             56
Corporate & other                                                                          (112)          (119)
                                                                                     ----------     ----------
     Pre-tax income                                                                       1,451            852

Income tax expense
     Federal and state                                                                      349            193
     Foreign (a)                                                                            252            170
                                                                                     ----------     ----------
Total                                                                                       601            363

                                                                                     ----------     ----------
Income from continuing operations                                                    $      850     $      489
                                                                                     ==========     ==========

Worldwide effective tax rate                                                                41%            43%
                                                                                     ==========     ==========

CORE EARNINGS

Oil & Gas (a)                                                                        $    1,349     $      915
Chemical                                                                                    214             56
Corporate & other                                                                          (102)          (108)
                                                                                     ----------     ----------
     Pre-tax income                                                                       1,461            863

Income tax expense
     Federal and state                                                                      343            217
     Foreign (a)                                                                            252            170
                                                                                     ----------     ----------
Total                                                                                       595            387

                                                                                     ----------     ----------
Core Earnings                                                                        $      866     $      476
                                                                                     ==========     ==========

Worldwide effective tax rate                                                                41%            45%
================================================================================     ==========     ==========


     (a)  Revenues and income tax expense include taxes owed by Occidental but
          paid by governmental entities on its behalf. Oil and gas pre-tax
          income includes revenue amounts of $187 million for the first quarter
          of 2005 and $116 million for the first quarter of 2004.


Occidental's first quarter 2005 worldwide effective tax rate was 41 percent. The
first quarter 2005 reflected a lower U.S. income tax rate resulting from the
crediting of foreign income taxes. Prior to the second quarter 2004, foreign
income taxes were deducted in determining U.S. taxable income. An annual tax
election permits a taxpayer to claim a credit or deduction for foreign income
taxes, whichever is more beneficial. Occidental expects to continue its election
to credit foreign income taxes in future years. Occidental expects the tax rate
for the second quarter to be approximately 41 percent.


                                       17



OIL AND GAS SEGMENT



                                                                   Three Months Ended
                                                                             March 31
                                                            -------------------------
Summary of Operating Statistics                                   2005           2004
=======================================================     ==========     ==========
                                                                     
NET PRODUCTION PER DAY:
   CRUDE OIL AND NATURAL GAS LIQUIDS (MBL)
     United States                                                 247            258
     Latin America                                                  74             79
     Middle East                                                   101             95
     Other Eastern Hemisphere                                        5              9

   NATURAL GAS (MMCF)
     United States                                                 528            527
     Middle East                                                    56             11
     Other Eastern Hemisphere                                       78             75

BARRELS OF OIL EQUIVALENT (MBOE)(A)
   Consolidated subsidiaries                                       537            543
   Other interests                                                  28             25
                                                            ----------     ----------
   Worldwide production                                            565            568
=======================================================     ==========     ==========

AVERAGE SALES PRICE:
   CRUDE OIL ($/BBL)
     United States                                          $    44.24     $    32.62
     Latin America                                          $    39.87     $    28.99
     Middle East                                            $    42.00     $    30.08
     Other Eastern Hemisphere                               $    37.97     $    29.37
     Total consolidated subsidiaries                        $    42.68     $    31.19
     Other interests                                        $    28.20     $    19.75
     Total Worldwide                                        $    41.71     $    30.44

   NATURAL GAS ($/MCF)
     United States                                          $     5.94     $     5.00
     Middle East                                            $     0.96     $     0.97
     Other Eastern Hemisphere                               $     2.21     $     2.23
     Total consolidated subsidiaries                        $     5.04     $     4.55
     Other interests                                        $     0.15     $       --
     Total Worldwide                                        $     4.89     $     4.55
=======================================================     ==========     ==========


(a)  Natural gas volumes have been converted to equivalent BOE based on energy
     content of 6,000 cubic feet (one thousand cubic feet is referred to as an
     "Mcf") of gas to one barrel of oil.

Oil and gas segment and core earnings for the first quarter of 2005 were $1.3
billion, compared with $915 million for the same period of 2004. The increase in
earnings for the first quarter of 2005, compared to the first quarter of 2004,
reflected higher prices for crude oil and natural gas, partially offset by
higher production-related taxes and higher utility costs which were the result
of higher oil and gas prices, and higher DD&A rates due to accelerated drilling
and workovers of wells in Yemen and Elk Hills and a facilities expansion project
in Qatar.

The increase of $526 million in net sales in the first quarter of 2005, compared
with the same period in 2004, reflected higher prices for crude oil and natural
gas.


                                       18



The average West Texas Intermediate price in the first quarter of 2005 was
$49.84 per barrel and the average New York Mercantile Exchange (NYMEX) price for
natural gas was $6.89 per million BTUs. A change of 10 cents per million BTUs in
NYMEX gas prices impacts quarterly oil and gas segment earnings by approximately
$5 million while a $1.00 per-barrel change in oil prices has a quarterly impact
of approximately $36 million.

Average production costs for the first quarter 2005 were $7.77 per barrel of oil
equivalent (BOE) compared to the average 2004 production cost of $6.95 per BOE.

Occidental expects second quarter 2005 oil and gas production to be slightly
higher than the first quarter 2005 production because the first quarter did not
include production from the Permian Basin acquisitions which occurred at the end
of the quarter. The effect of these acquisitions will be partially offset by
downtime expected at Horn Mountain for scheduled pipeline maintenance. In
addition, production could vary due to price-driven adjustments in the volumes
under production-sharing contracts in Oman, Qatar, Yemen and Long Beach.

In April 2005, Occidental signed a heads of agreement with the government of
Oman to develop the Mukhaizna oil field in Oman. If the terms of the
understanding are implemented, Occidental would be operator of the field. The
field currently is producing approximately 10,000 barrels of oil per day.
Occidental and its partners would expect to invest over $2 billion to implement
a large-scale steam flood to increase production to approximately 150,000
barrels of oil per day within the next few years.

CHEMICAL SEGMENT



                                                              Three Months Ended
                                                                        March 31
                                                       -------------------------
Summary of Operating Statistics                              2005           2004
==================================================     ==========     ==========
                                                                
MAJOR PRODUCT VOLUMES (M TONS, EXCEPT PVC
   RESINS)
     Chlorine (a)                                             705            706
     Caustic Soda                                             714            732
     Ethylene Dichloride                                      130            122
     PVC Resins (millions of pounds)                        1,025          1,071

MAJOR PRODUCT PRICE INDEX (1987 THROUGH 1990
   AVERAGE PRICE = 1.0)
     Chlorine                                                2.56           1.60
     Caustic Soda                                            1.52           0.71
     Ethylene Dichloride                                     1.78           1.32
     PVC Resins (b)                                          1.29           0.94
==================================================     ==========     ==========


(a)  Product volumes include those manufactured and consumed internally.

(b)  Product volumes produced at former PolyOne facilities, now part of
     Occidental, are excluded from the product price indexes.

Chemical segment and core earnings for the first quarter of 2005 were $214
million, compared with $56 million for the same period of 2004. The increase in
earnings for the first quarter of 2005, compared with the same period in 2004,
was due primarily to higher margins in all major products resulting from higher
sales prices, partially offset by higher energy and feedstock costs.

The increase of $227 million in net sales in the first quarter of 2005, compared
with the same period in 2004, primarily reflected higher prices for all major
products.

Occidental expects second quarter 2005 chemical earnings to be similar to the
first quarter 2005 as it expects no weakening in demand or margin decline for
its major products in the second quarter.


                                       19



CORPORATE AND OTHER

Unallocated corporate items - income taxes for the first quarter of 2005
includes a $10 million charge related to a state tax issue. The first quarter of
2004 includes a $20 million credit related to a settlement of a tax issue.

LIQUIDITY AND CAPITAL RESOURCES

Occidental's net cash provided by operating activities was $1.2 billion for the
first quarter of 2005, compared with $965 million for the same period of 2004.
The significant increase in operating cash flow in 2005, compared to 2004,
resulted from several factors. The most important drivers were the significantly
higher oil and natural gas prices and, to a much lesser extent, higher chemical
prices. In the first quarter of 2005, compared to the same period in 2004,
Occidental's realized oil price was higher by 37 percent and Occidental's
realized natural gas price increased almost 19 percent in the U.S., where
approximately 80 percent of Occidental's natural gas was produced.

Increases in sales prices realized for Occidental's major chemical product lines
for the first quarter of 2005, compared to the first quarter of 2004, ranged
from 35 to 114 percent. Chemical prices increased in the first quarter of 2005
at a higher rate than the energy-driven increase in feedstock and power costs,
thereby improving margins and cash flow. Chemical price changes had a less
significant effect on cash flow because chemical segment earnings and cash flow
are significantly smaller than those for the oil and gas segment and because of
increases in energy price-driven feedstock and electric power costs, which are
major elements of manufacturing cost for the chemical segment's products.

Increases in the costs of producing oil and gas, such as purchased goods and
services, particularly materials and oil field services, partially offset oil
and gas sales price increases, but such cost increases had a much lower effect
on cash flow than the realized price increases. Other cost elements, such as
labor costs and overheads, are not significant drivers of cash flow because they
are mainly fixed within a narrow range over the short-to-intermediate term.

Occidental's net cash used by investing activities was $846 million for the
first quarter of 2005, compared with $694 million for the same period of 2004.
The 2005 amount includes two Permian Basin acquisitions totaling $304 million.
The 2004 amount includes the purchase of a pipeline and gathering system in the
Permian Basin and a $208 million advance to the Elk Hills Power LLC (EHP) equity
investment which EHP used to repay a portion of its debt. Capital expenditures
for the first quarter of 2005 were $536 million, including $506 million in oil
and gas. Capital expenditures for the first quarter of 2004 were $343 million,
including $326 million in oil and gas. The 2005 amount includes $90 million for
exploration lease bonuses in Libya.

Occidental's net cash used by financing activities was $495 million in the first
quarter of 2005, compared with $467 million for the same period of 2004. The
2005 amount includes total cash paid of $459 million for the redemption of 7.65
percent senior notes. The 2004 amount includes total cash paid of $466 million
to repurchase the trust preferred securities in January 2004.

In the first quarter 2005, Occidental filed a shelf registration statement for
up to $1.5 billion of various securities. No securities have been issued.

Available but unused lines of committed bank credit totaled approximately $1.5
billion at March 31, 2005 and cash and cash equivalents and short-term
investments totaled $1.4 billion on the March 31, 2005 balance sheet.

At March 31, 2005, under the most restrictive covenants of certain financing
agreements, Occidental's capacity for additional unsecured borrowing was
approximately $24.9 billion, and the capacity for the payment of cash dividends
and other distributions on, and for acquisitions of, Occidental's capital stock


                                       20



was approximately $9.2 billion, assuming that such dividends, distributions and
acquisitions were made without incurring additional borrowing.

Occidental currently expects to spend approximately $2.2 billion on its 2005
capital spending program. Although its income and cash flows are largely
dependent on oil and gas prices and production, Occidental believes that cash on
hand, short-term investments and cash generated from operations will be
sufficient to fund its operating needs, capital expenditure requirements,
dividend payments and potential acquisitions. If needed, Occidental could access
its existing credit facilities.

ENVIRONMENTAL EXPENDITURES

Occidental's operations in the United States are subject to stringent federal,
state and local laws and regulations relating to improving or maintaining
environmental quality. Foreign operations also are subject to
environmental-protection laws. The laws that require or address environmental
remediation may apply to past waste disposal practices and releases. In many
cases, the laws apply regardless of fault, legality of the original activities
or current ownership or control of sites. OPC or certain of its subsidiaries are
currently participating in environmental assessments and cleanups under these
laws at sites subject to the federal Comprehensive Environmental Response,
Compensation, and Liability Act (CERCLA), comparable state sites and other
domestic and foreign remediation sites, including Occidental facilities and
previously owned sites.

The following table presents Occidental's environmental remediation reserves at
March 31, 2005, the current portion of which ($76 million) is included in
accrued liabilities. The remaining amount is included in deferred credits and
other liabilities - other. The reserves are grouped by three categories of
environmental remediation sites ($ amounts in millions):



                                                # of Sites           Reserve
     ===================================     ===============     ===============
                                                           
     CERCLA &  Equivalent Sites                       124           $     240
     Active Facilities                                 16                  73
     Closed or Sold Facilities                         39                  63
                                             ---------------     ---------------
          Total                                       179           $     376
     ===================================     ===============     ===============


In determining the environmental remediation reserves and the reasonably
possible range of loss, Occidental refers to currently available information,
including relevant past experience, available technology, regulations in effect,
the timing of remediation and cost-sharing arrangements. Occidental expects it
may continue to incur additional liabilities beyond those recorded for
environmental remediation at these and other sites. The range of reasonably
possible loss for existing environmental remediation matters could be up to $375
million beyond the amount accrued.

The following table shows additional detail regarding reserves for CERCLA or
CERCLA-equivalent proceedings in which OPC or certain of its subsidiaries were
involved at March 31, 2005 ($ amounts in millions):



      Description                           # of Sites          Reserve
     ===================================     ===============     ===============
                                                           
     Minimal/No Exposure (a)                           99           $       6
     Reserves between $1-10 MM                         18                  69
     Reserves over $10 MM                               7                 165
                                             ---------------     ---------------
          Total                                       124           $     240
     ===================================     ===============     ===============


     (a)  Includes 27 sites for which Maxus Energy Corporation has retained the
          liability and indemnified Occidental, 7 sites where Occidental has
          denied liability without challenge, 52 sites where Occidental's
          reserves are less than $50,000 each, and 13 sites where reserves are
          between $50,000 and $1 million each.


                                       21



Refer to the "Environmental Expenditures" section of Management's Discussion and
Analysis of Financial Condition and Results of Operations in the 2004 Form 10-K
for additional information regarding Occidental's environmental expenditures.

LAWSUITS, CLAIMS, COMMITMENTS, CONTINGENCIES AND RELATED MATTERS

OPC and certain of its subsidiaries have been named in a substantial number of
lawsuits, claims and other legal proceedings. These actions seek, among other
things, compensation for alleged personal injury, breach of contract, property
damage, punitive damages, civil penalties or other losses; or injunctive or
declaratory relief. OPC and certain of its subsidiaries also have been named in
proceedings under CERCLA and similar federal, state, local and foreign
environmental laws. These environmental proceedings seek funding or performance
of remediation and, in some cases, compensation for alleged property damage,
punitive damages and civil penalties; however, Occidental is usually one of many
companies in these proceedings and has to date been successful in sharing
response costs with other financially-sound companies. With respect to all such
lawsuits, claims and proceedings, including environmental proceedings,
Occidental accrues reserves when it is probable a liability has been incurred
and the amount of loss can be reasonably estimated.

In September 2004, Occidental received formal notification from Petroecuador,
the state oil company of Ecuador, initiating proceedings to determine if
Occidental had violated its Participation Contract for Block 15 or the
Ecuadorian Hydrocarbons Law and whether the alleged violations constitute
grounds for terminating the Participation Contract. The principal allegation
stated in the notice is an assertion that Occidental should have obtained
government approval of a farmout agreement entered into in 2000. Occidental
believes that it has complied with all material obligations under the
Participation Contract and Ecuadorian law and that any termination of the
contract based upon the stated allegations would be unfounded and would
constitute an unlawful expropriation. Earlier this year, Occidental made
preliminary settlement proposals to the Government of Ecuador as a potential
framework to resolve this dispute. It is reasonably possible that a negotiated
settlement would negatively affect the future profitability of, and production
and reserves from, Block 15 operations. On April 20, 2005, in the midst of
significant public protests, Ecuador's Congress removed the country's President
from office, and the country's Vice President became President. A new cabinet
has not been fully formed, and Occidental has not been able to determine what
position the new Government will take regarding foreign investors, the petroleum
industry in general and Occidental's dispute in particular. Block 15 operations
represent approximately 9 percent of Occidental's 2004 consolidated production,
4 percent of its proved consolidated reserves and 2 percent of its total
property, plant and equipment, net of accumulated depreciation, depletion and
amortization.

In April 2004, a number of U.S. companies, including Occidental Chemical
Corporation (OxyChem), were served with seven lawsuits filed in Nicaragua by
approximately two thousand individual plaintiffs. These individuals allege that
they have sustained several billion dollars of personal injury damages as a
result of their alleged exposure to a pesticide. In the opinion of management,
these claims are without merit because, among other things, OxyChem believes
that none of the pesticide it manufactured was ever sold or used in Nicaragua.
Under the applicable Nicaraguan statute, defendants are required to pay
pre-trial deposits so large as to effectively prohibit defendants from
participating fully in their defense. In similar situations, involving other
defendants, Nicaraguan courts have proceeded to enter significant judgments
against the defendants under that statute. OxyChem has filed a response to the
complaints contesting jurisdiction without posting such pre-trial deposit. In
December 2004, the judge in one of the cases ruled the court had jurisdiction
over the defendants, including OxyChem, and that the plaintiffs had waived the
requirement of the pre-trial deposit. OxyChem has appealed that portion of the
ruling relating to the jurisdiction of the Nicaraguan courts. Thereafter, the
trial court ordered defendants, including OxyChem, to file an answer. In order
to preserve its jurisdictional defense, OxyChem elected not to make a
substantive appearance in the case. In the opinion of management, any judgment
rendered under the statute would be unenforceable in the United States.


                                       22



During the course of its operations, Occidental is subject to audit by tax
authorities for varying periods in various federal, state, local and foreign tax
jurisdictions. Taxable years prior to 1997 are closed for U.S. federal income
tax purposes. Taxable years 1997 through 2003 are in various stages of audit by
the Internal Revenue Service. Disputes arise during the course of such audits as
to facts and matters of law. Occidental has been in continuing tax audit
settlement discussions with the Internal Revenue Service on issues related to
foreign tax credits and various domestic income issues for the 1997 to 2000
audit years. Occidental believes that it is reasonably possible that substantive
issues for taxable years 1997 to 2000 could be favorably resolved during 2005
and that such resolutions, if they occur, could have a positive and material
effect on its results of operations and its financial condition; however,
Occidental believes such resolutions will not have a significant cash effect.

Occidental has guarantees outstanding at March 31, 2005, which encompass
performance bonds, letters of credit, indemnities, commitments and other forms
of guarantees provided by Occidental to third parties, mainly to provide
assurance that Occidental and/or its subsidiaries and affiliates will meet their
various obligations (guarantees). At March 31, 2005, the notional amount of
these guarantees was approximately $500 million. Of this amount, approximately
$400 million relates to Occidental's guarantees of equity investees' debt and
other commitments. The remaining $100 million relates to various indemnities and
guarantees provided to third parties.

It is impossible at this time to determine the ultimate liabilities that OPC and
its subsidiaries may incur resulting from any lawsuits, claims and proceedings,
audits, commitments, contingencies and related matters. If these matters were to
be ultimately resolved unfavorably at amounts substantially exceeding
Occidental's reserves, an outcome not currently anticipated, it is possible that
such outcome could have a material adverse effect upon Occidental's consolidated
financial position or results of operations. However, after taking into account
reserves, management does not expect the ultimate resolution of any of these
matters to have a material adverse effect upon Occidental's consolidated
financial position or results of operations.

ACCOUNTING CHANGES

In April 2005, the FASB issued FASB Staff Position No. (FSP) FAS 19-1,
"Accounting for Suspended Well Costs." FSP FAS 19-1 specifies new accounting
guidance for when successful efforts companies can capitalize exploratory well
costs. The guidance also requires new disclosures related to these costs. FSP
FAS 19-1 is effective in the first reporting period beginning after April 4,
2005 and should be applied prospectively to existing and new exploratory well
costs. Occidental plans to adopt this statement effective July 1, 2005 and it is
not expected to have a material effect on the financial statements upon
adoption.

In March 2005, the FASB issued FASB Interpretation No. (FIN) 47, "Accounting for
Conditional Asset Retirement Obligations." FIN 47 specifies the accounting
treatment for conditional asset retirement obligations under the provisions of
Statement of Accounting Standard (SFAS) No. 143. FIN 47 is effective no later
than the end of fiscal years ending after December 15, 2005. Occidental plans to
adopt this statement effective December 31, 2005. Occidental is currently
assessing the effect of FIN 47 on its financial statements.

In December 2004, the FASB issued SFAS No. 123 (revised 2004) (SFAS No. 123R)
"Share-Based Payments." SFAS No. 123R requires that the cost from all
share-based payment transactions, including stock options, be recognized in the
financial statements at fair value. Occidental currently uses the
intrinsic-value method to account for these share-based payments. SFAS No. 123R
is effective for public companies at the beginning of the first fiscal year
ending after June 15, 2005. Occidental will adopt the provisions of this
statement effective January 1, 2006. Occidental anticipates adopting SFAS No.
123R using the modified prospective method, which will not require Occidental to
restate prior periods. Occidental is currently assessing the effect of SFAS No.
123R on its financial statements.


                                       23



SAFE HARBOR STATEMENT REGARDING OUTLOOK AND FORWARD-LOOKING INFORMATION

Portions of this report contain forward-looking statements and involve risks and
uncertainties that could significantly affect expected results of operations,
liquidity, cash flows and business prospects. Factors that could cause results
to differ materially include, but are not limited to: exploration risks such as
drilling unsuccessful wells, global commodity pricing fluctuations; competitive
pricing pressures; higher-than-expected costs, including feedstocks; crude oil
and natural gas prices; chemical prices; potential liability for remedial
actions under existing or future environmental regulations and litigation;
potential liability resulting from pending or future litigation; general
domestic and international political conditions; potential disruption or
interruption of Occidental's production or manufacturing facilities due to
accidents, political events or insurgent activity; potential failure to achieve
expected production from existing and future oil and gas development projects;
the supply/demand considerations for Occidental's products; any general economic
recession or slowdown domestically or internationally; regulatory uncertainties;
and not successfully completing, or any material delay of, any development of
new fields, expansion, capital expenditure, efficiency-improvement project,
acquisition or disposition. Forward-looking statements are generally accompanied
by words such as "estimate", "project", "predict", "will", "anticipate", "plan",
"intend", "believe", "expect" or similar expressions that convey the uncertainty
of future events or outcomes. Occidental expressly disclaims any obligation to
publicly update or revise any forward-looking statements, whether as a result of
new information or otherwise. In light of these risks, uncertainties and
assumptions, the forward-looking events discussed might not occur.


                                       24



ITEM 3.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

During the first quarter of 2005, Occidental entered into a series of fixed
price swaps and costless collar agreements that qualify as cash-flow hedges for
the sale of its crude oil production. These hedges, which begin in July 2005 and
continue to the end of 2011, will hedge less than 4% of Occidental's current
crude oil production. The following table provides information about these
cash-flow hedges in a tabular presentation.



                                                                                                            Fair Value
                                                                                                            Liability
                               2005(a)    2006       2007       2008       2009       2010       2011     (in millions)
                             --------   --------   --------   --------   --------   --------   --------   -------------
                                                                                  
Crude Oil Fixed
Price Swaps
- --------------------------
     Daily Volume (bpd)            14         10          8         --         --         --         --   $         114
     Average Price           $  45.61   $  41.61   $  40.04


Crude Oil Costless Collars
- --------------------------
     Daily Volume (bpd)             2          6          7         14         13         12         12             156
     Average Floor           $  44.00   $  41.33   $  40.43   $  34.07   $  33.15   $  33.00   $  32.92
     Average Cap             $  49.75   $  48.05   $  45.21   $  47.47   $  47.41   $  46.35   $  46.27
                                                                                                          -------------
                                                                                                          $         270
                                                                                                          =============


(a)  Hedges for 2005 are in place only from July 2005 to December 2005.


For the three months ended March 31, 2005, there were no other material changes
in the information required to be provided under Item 305 of Regulation S-K
included under the caption "Management's Discussion and Analysis of Financial
Condition and Results of Operations (Incorporating Item 7A) - Derivative
Activities and Market Risk" in Occidental's 2004 Annual Report on Form 10-K.

ITEM 4.   CONTROLS AND PROCEDURES

Occidental's Chief Executive Officer and Chief Financial Officer supervised and
participated in Occidental's evaluation of its disclosure controls and
procedures as of the end of the period covered by this report. Disclosure
controls and procedures are controls and procedures designed to ensure that
information required to be disclosed in Occidental's periodic reports filed or
submitted under the Securities Exchange Act of 1934, as amended, is recorded,
processed, summarized and reported within the time periods specified in the
Securities and Exchange Commission's rules and forms. Based upon that
evaluation, Occidental's Chief Executive Officer and Chief Financial Officer
concluded that Occidental's disclosure controls and procedures are effective.

There has been no change in Occidental's internal control over financial
reporting during the first quarter of 2005 that has materially affected, or is
reasonably likely to materially affect, Occidental's internal control over
financial reporting.


                                       25



                            PART II OTHER INFORMATION

ITEM 1.   LEGAL PROCEEDINGS


This item incorporates by reference the information regarding lawsuits, claim,
commitments, contingencies and related matters in Note 9 to the consolidated
condensed financial statements in Part I of this Form 10-Q.

In September 2004, Occidental received formal notification from Petroecuador,
the state oil company of Ecuador, initiating proceedings to determine if
Occidental had violated its Participation Contract for Block 15 or the
Ecuadorian Hydrocarbons Law and whether the alleged violations constitute
grounds for terminating the Participation Contract. The principal allegation
stated in the notice is an assertion that Occidental should have obtained
government approval of a farmout agreement entered into in 2000. Occidental
believes that it has complied with all material obligations under the
Participation Contract and Ecuadorian law and that any termination of the
contract based upon the stated allegations would be unfounded and would
constitute an unlawful expropriation. Earlier this year, Occidental made
preliminary settlement proposals to the Government of Ecuador as a potential
framework to resolve this dispute. It is reasonably possible that a negotiated
settlement would negatively affect the future profitability of, and production
and reserves from, Block 15 operations. On April 20, 2005, in the midst of
significant public protests, Ecuador's Congress removed the country's President
from office, and the country's Vice President became President. A new cabinet
has not been fully formed, and Occidental has not been able to determine what
position the new Government will take regarding foreign investors, the petroleum
industry in general and Occidental's dispute in particular. Block 15 operations
represent approximately 9 percent of Occidental's 2004 consolidated production,
4 percent of its proved consolidated reserves and 2 percent of its total
property, plant and equipment, net of accumulated depreciation, depletion and
amortization.

In April 2004, a number of U.S. companies, including OxyChem, were served with
seven lawsuits filed in Nicaragua by approximately two thousand individual
plaintiffs. These individuals allege that they have sustained several billion
dollars of personal injury damages as a result of their alleged exposure to a
pesticide. In the opinion of management, these claims are without merit because,
among other things, OxyChem believes that none of the pesticide it manufactured
was ever sold or used in Nicaragua. Under the applicable Nicaraguan statute,
defendants are required to pay pre-trial deposits so large as to effectively
prohibit defendants from participating fully in their defense. In similar
situations, involving other defendants, Nicaraguan courts have proceeded to
enter significant judgments against the defendants under that statute. OxyChem
has filed a response to the complaints contesting jurisdiction without posting
such pre-trial deposit. In December 2004, the judge in one of the cases ruled
the court had jurisdiction over the defendants, including OxyChem, and that the
plaintiffs had waived the requirement of the pre-trial deposit. OxyChem has
appealed that portion of the ruling relating to the jurisdiction of the
Nicaraguan courts. Thereafter, the trial court ordered defendants, including
OxyChem, to file an answer. In order to preserve its jurisdictional defense,
OxyChem elected not to make a substantive appearance in the case. In the opinion
of management, any judgment rendered under the statute would be unenforceable in
the United States.

Accordingly, management does not expect the ultimate resolution of any of these
matters to have a material adverse effect upon Occidental's consolidated
financial position or results of operations.


ITEM 6.   EXHIBITS

               10.1      Executive Stock Ownership Guidelines.

               10.2      1996 Restricted Stock Plan for Non-Employee Directors,
                         amended as of February 10, 2005.


                                       26


               11        Statement regarding the computation of earnings per
                         share for the three months ended March 31, 2005 and
                         2004.

               12        Statement regarding the computation of total enterprise
                         ratios of earnings to fixed charges for the three
                         months ended March 31, 2005 and 2004 and the five years
                         ended December 31, 2004.

               31.1      Certification of CEO Pursuant to Section 302 of the
                         Sarbanes-Oxley Act of 2002

               31.2      Certification of CFO Pursuant to Section 302 of the
                         Sarbanes-Oxley Act of 2002

               32.1      Certifications of CEO and CFO Pursuant to Section 906
                         of the Sarbanes-Oxley Act of 2002


                                       27




                                   SIGNATURES




Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.


                              OCCIDENTAL PETROLEUM CORPORATION




DATE: May 4, 2005             S. P. Dominick, Jr.
                              --------------------------------------------------
                              S. P. Dominick, Jr., Vice President and Controller
                              (Chief Accounting and Duly Authorized Officer)


                                       28



                                  EXHIBIT INDEX

EXHIBITS
- --------

     10.1      Executive Stock Ownership Guidelines.

     10.2      1996 Restricted Stock Plan for Non-Employee Directors, amended as
               of February 10, 2005.

     11        Statement regarding the computation of earnings per share for the
               three months ended March 31, 2005 and 2004.

     12        Statement regarding the computation of total enterprise ratios of
               earnings to fixed charges for the three months ended March 31,
               2005 and 2004 and the five years ended December 31, 2004.

     31.1      Certification of CEO Pursuant to Section 302 of the
               Sarbanes-Oxley Act of 2002

     31.2      Certification of CFO Pursuant to Section 302 of the
               Sarbanes-Oxley Act of 2002

     32.1      Certifications of CEO and CFO Pursuant to Section 906 of the
               Sarbanes-Oxley Act of 2002


                                       29