SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                    FORM 11-K


(Mark One)

[X]  ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES
     EXCHANGE ACT OF 1934 [NO FEE REQUIRED]

For the fiscal year ended December 31, 2004

                                       OR

[  ] TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES
     EXCHANGE ACT OF 1934 [NO FEE REQUIRED]

For the transition period from ____________ to ______________

Commission file number: 1-9210

     A. Full title of the plan and the address of the plan, if different from
that of the issuer named below:

                  Occidental Petroleum Corporation Savings Plan


     B. Name of issuer of the securities held pursuant to the plan and the
address of its principal executive office:

                        Occidental Petroleum Corporation
                            10889 Wilshire Boulevard
                          Los Angeles, California 90024

SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the trustees (or other persons who administer the Plan) have duly caused this annual report to be signed on its behalf by the undersigned hereunto duly authorized. OCCIDENTAL PETROLEUM CORPORATION SAVINGS PLAN By s:/Jim A. Leonard/ ---------------------------------------------------- James A. Leonard - Member of the Occidental Petroleum Corporation Pension and Retirement Plan Administrative Committee Dated: June 28, 2005

OCCIDENTAL PETROLEUM CORPORATION SAVINGS PLAN Financial Statements and Supplemental Schedules December 31, 2004 and 2003 (With Report of Independent Registered Public Accounting Firm Thereon) WLA11572AC PCAOB

OCCIDENTAL PETROLEUM CORPORATION SAVINGS PLAN INDEX TO FINANCIAL STATEMENTS AND SUPPLEMENTAL SCHEDULES PAGE Report of Independent Registered Public Accounting Firm 1 Statements of Net Assets Available for Benefits - December 31, 2004 and 2003 2 Statements of Changes in Net Assets Available for Benefits - Years ended December 31, 2004 and 2003 3 Notes to Financial Statements 4 SCHEDULES 1 Schedule H, Line 4i - Schedule of Assets (Held at End of Year) - December 31, 2004 16 2 Schedule H, Line 4j - Schedule of Reportable Transactions - Year ended December 31, 2004 19 Note: Supplemental schedules have been omitted because they are not applicable or are not required by 29 CFR 2520.103-10 of the Department of Labor's Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974, as amended.

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM The Occidental Petroleum Corporation Pension and Retirement Plan Administrative Committee: We have audited the accompanying statements of net assets available for benefits of the Occidental Petroleum Corporation Savings Plan (the Plan) as of December 31, 2004 and 2003 and the related statements of changes in net assets available for benefits for the years then ended. These financial statements are the responsibility of the Plan's management. Our responsibility is to express an opinion on these financial statements based on our audits. We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion. In our opinion, the financial statements referred to above present fairly, in all material respects, the net assets available for benefits of the Plan as of December 31, 2004 and 2003 and the changes in net assets available for benefits for the years then ended in conformity with U.S. generally accepted accounting principles. Our audits were performed for the purpose of forming an opinion on the basic financial statements taken as a whole. The supplemental schedules are presented for purposes of additional analysis and are not a required part of the basic financial statements but are supplementary information required by the Department of Labor's Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974. These supplemental schedules are the responsibility of the Plan's management. The supplemental schedules have been subjected to the auditing procedures applied in the audits of the basic financial statements and, in our opinion, are fairly stated, in all material respects, in relation to the basic financial statements taken as a whole. /s/ KPMG LLP Los Angeles, California June 24, 2005

OCCIDENTAL PETROLEUM CORPORATION SAVINGS PLAN Statements of Net Assets Available for Benefits December 31, 2004 and 2003 (Dollar amounts in thousands) 2004 2003 ------------ ------------ Assets: Investments: At fair value: Cash and cash equivalents $ 21,162 10,900 Common stock 552,201 508,632 Mutual funds 391,134 353,930 Participant loans 17,942 16,735 Plan interest in Master Trusts 60,963 3,323 At contract value: Guaranteed investment contracts 197,625 167,755 ------------ ------------ Total investments 1,241,027 1,061,275 ------------ ------------ Receivables: Interest and dividends 2,564 2,886 Participant contributions -- 1,561 Employer contributions -- 911 Due from broker for securities sold 5,850 195 ------------ ------------ Total receivables 8,414 5,553 ------------ ------------ Total assets 1,249,441 1,066,828 ------------ ------------ Liabilities: Accrued expenses 51 57 Due to broker for securities purchased 6,591 113 ------------ ------------ Total liabilities 6,642 170 ------------ ------------ Net assets available for benefits $ 1,242,799 1,066,658 ============ ============ See accompanying notes to financial statements. 2

OCCIDENTAL PETROLEUM CORPORATION SAVINGS PLAN Statements of Changes in Net Assets Available for Benefits Years ended December 31, 2004 and 2003 (Dollar amounts in thousands) 2004 2003 ------------ ------------ Additions: Additions to net assets attributable to: Investment income: Interest and dividend income $ 17,320 15,694 Net appreciation in fair value of investments 214,295 243,835 Other income 196 43 ------------ ------------ Total investment income 231,811 259,572 ------------ ------------ Contributions: Participant 40,625 38,549 Employer 22,174 22,479 Participant rollovers 1,556 1,928 ------------ ------------ Total contributions 64,355 62,956 ------------ ------------ Transfers from other plans -- 1,553 ------------ ------------ Total additions 296,166 324,081 ------------ ------------ Deductions: Deductions from net assets attributable to: Benefits paid to participants 119,306 102,148 Plan expenses 719 1,148 ------------ ------------ Total deductions 120,025 103,296 ------------ ------------ Net increase 176,141 220,785 Net assets available for benefits: Beginning of year 1,066,658 845,873 ------------ ------------ End of year $ 1,242,799 1,066,658 ============ ============ See accompanying notes to financial statements. 3

OCCIDENTAL PETROLEUM CORPORATION SAVINGS PLAN Notes to Financial Statements December 31, 2004 and 2003 (1) DESCRIPTION OF THE PLAN The following description of the Occidental Petroleum Corporation Savings Plan (the Plan) provides only general information. Participants should refer to the Plan document for a more complete description of the Plan's provisions. (a) GENERAL The Plan is a defined contribution plan generally available to certain employees of Occidental Petroleum Corporation (OPC, Oxy, or the Employer), a Delaware corporation, and participating subsidiaries (collectively, the Company). The Plan is subject to the provisions of the Employee Retirement Income Security Act of 1974, as amended (ERISA). (b) PLAN ADMINISTRATION The Plan is administered by the OPC Pension and Retirement Trust and Investment Committee (PARTAIC) as to investment decisions and by the OPC Pension and Retirement Plan Administrative Committee (PARPAC) as to all matters except investment decisions (these two committees are herein referred to collectively as the Committees). Members of the Committees are selected by the board of directors of OPC. The Committees have been given all powers necessary to carry out their respective duties, including, but not limited to, the power to administer and interpret the Plan and to answer all questions affecting eligibility of participants. Effective April 1, 2004, the Bank of New York (the Trustee) is the trustee and custodian of the trust fund, which holds all of the assets of the Plan. Prior to April 1, 2004, The Northern Trust Company was the trustee of the Plan. (c) CONTRIBUTIONS Participant Contributions - Participants may contribute up to the maximum contribution percentage of compensation (as defined) to the Plan on a before- or after-tax basis, or in any combination thereof, subject to certain Internal Revenue Code (IRC) limitations. For 2004, the deferral percentage limits were 32% for non-Highly Compensated Employees (non-HCEs) and 14% for Highly Compensated Employee (HCEs). For 2003, the deferral percentage limits for a non-HCE were 31% and 14% for HCEs. Participants age 50 or older by the end of the Plan year were permitted to contribute before-tax catch-up contributions to the Plan up to $3,000 and $2,000 for the 2004 and 2003 Plan years, respectively. Employer Matching Contributions - For noncollectively bargained employees, the Company contributed 100% of a participant's contribution up to the first 6% of eligible compensation. For collectively bargained employees, the Company contributed 50%, 75%, or 100% as negotiated by their respective unions, of the first 6% of eligible compensation that a participant contributed to the Plan. All Employer contributions are invested in the Occidental Petroleum Corporation Common Stock Fund (the Oxy Stock Fund). 4 (Continued)

OCCIDENTAL PETROLEUM CORPORATION SAVINGS PLAN Notes to Financial Statements December 31, 2004 and 2003 (d) PARTICIPANT ACCOUNTS Each participant's account is credited with the participant's elected contribution, the Employer's respective matching contribution, and allocations of Plan earnings, and charged with an allocation of Plan investment losses and trustee fees. Allocations are based on participant earnings or account balances, as defined. The benefit to which a participant is entitled is the benefit that can be provided from the participant's vested account. (e) VESTING Participants are vested immediately in their contributions plus actual earnings thereon. Effective June 1, 2002, participants became 100% vested in dividends credited to their balance in the Company Matching Contribution Account under the Oxy Stock Fund on or after June 1, 2002. Vesting in the Company's contribution portion of their accounts is based on years of continuous service. Generally, a participant is 20% vested for each full year of service and is 100% vested after five years of vesting service. (f) PARTICIPANT LOANS Participants may borrow from their fund accounts a minimum of $1,000 up to a maximum equal to the lesser of: (i) $50,000 reduced by the highest outstanding principal loan balance during the preceding 12 months, (ii) 50% of their account balance, or (iii) a loan amount which would require monthly payroll deductions for repayment not greater than 25% of the participant's monthly base compensation. Loan terms range from one to five years for general-purpose loans and six to ten years for primary residence loans. The loans are secured by the balance in the participant's account and bear interest at a fixed rate equal to the Western Federal Credit Union's loan rate for a loan secured by a member's deposit account at the time the loan is approved. Interest rates ranged from 2.75% to 7.00% on loans outstanding as of December 31, 2004. Principal and interest is paid ratably through monthly payroll deductions. (g) DISTRIBUTIONS Generally, on termination of service for any reason other than death, participants with an account balance greater than $5,000 may elect to receive the vested portion of their account under one of the following distribution options: (i) one lump-sum payment, (ii) straight-life annuity, (iii) ten-year term certain annuity, (iv) joint and survivor annuity, (v) partial cash distribution, or (vi) deferral of payment with certain restrictions. Upon termination of service due to death, the beneficiary may elect to receive the vested interest in the form of (i), (ii), (iii), or (vi) only. A participant whose vested account balance is $5,000 or less may receive distributions only under options (i), (v), or (vi). Participants may elect to receive distributions from their account balance in the Oxy Stock Fund in cash or in shares of OPC common stock. 5 (Continued)

OCCIDENTAL PETROLEUM CORPORATION SAVINGS PLAN Notes to Financial Statements December 31, 2004 and 2003 (h) FORFEITED ACCOUNTS Forfeited nonvested accounts are used to reduce Employer contributions. During 2004 and 2003, Employer contributions were reduced by approximately $298,000 and $186,000 from forfeited nonvested accounts, respectively. Unallocated forfeitures at December 31, 2004 and 2003 were not significant to the financial statements. Effective August 2, 2004, Plan forfeitures are used to pay Plan expenses before reducing Employer contributions. (i) INVESTMENT OPTIONS The Plan offers various investment options which are managed by several outside investment managers. Upon enrollment in the Plan, participants may direct their contributions, in 1% increments, among any of the investment options offered at the time. Participants may change their investment options daily. Participants are provided a Plan fund description pamphlet for a complete description of the investment options and for the detailed composition of each investment fund. If a participant does not make an investment election, his or her elected contributions automatically are invested in the Plan's Stable Value Fund. (j) PLAN AMENDMENTS Effective August 2, 2004, the Plan was amended to allow forfeitures to be used to pay the reasonable costs of administering the Plan and any remaining forfeitures to be used to reduce Employer matching contributions. In addition, participants who met age and vesting service requirements may elect to diversify Oxy stock held in the Company matching account into other investment funds. The changes were to be implemented in three phases based on the participant's age and vesting service under the Plan. (k) PLAN MERGERS Effective September 12, 2003, all accounts not distributed from the Oxy Permian Savings Plan, which was terminated effective March 31, 2002, were merged into the Plan. Approximately $1,553,000 was transferred into the Plan in September 2003. (2) SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (a) BASIS OF ACCOUNTING The financial statements of the Plan are prepared under the accrual method of accounting. Certain reclassifications have been made to the 2003 financial statements to be consistent with the current year presentation. (b) USE OF ESTIMATES The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and changes therein, and disclosure of contingent assets and liabilities. Actual results could differ from those estimates. 6 (Continued)

OCCIDENTAL PETROLEUM CORPORATION SAVINGS PLAN Notes to Financial Statements December 31, 2004 and 2003 (c) INVESTMENT VALUATION AND INCOME RECOGNITION The Plan's investments are stated at fair value except for the investments in guaranteed investment contracts (fully benefit-responsive investment contracts) which are valued at contract value (notes 3 and 5). Quoted market prices are used to value investments. Shares of mutual funds are valued at the net asset value of shares held by the Plan at year-end. Participant loans are valued at cost, which approximates fair value. Purchases and sales of securities are recorded on a trade-date basis. Interest income is recorded on an accrual basis. Dividends are recorded on the ex-dividend date. Realized gains and losses on investments are based on the market value of the asset at the beginning of the year or at the time of purchase for assets purchased during the year, and the related fair value on the day the investments are sold during the year. Unrealized gains and losses of investments are based on the market value of the assets at the beginning of the year or at the time of purchase for assets purchased during the year, and the related fair value at the end of the year. Net realized and unrealized appreciation (depreciation) in fair value of investments is reflected in the accompanying statement of changes in net assets available for benefits as "net appreciation in fair value of investments." (d) PAYMENT OF BENEFITS Benefits are recorded when paid. (e) RISKS AND UNCERTAINTIES The Plan invests in various types of investment securities, including mutual funds, actively managed funds, and the Oxy Stock Fund. Investment securities are exposed to various risks, such as interest rate, market, and credit risks. Due to the level of risk associated with certain investment securities, it is at least reasonably possible that changes in the values of investment securities will occur in the near term and that such changes could materially affect the amounts reported in the statements of net assets available for benefits. Additionally, some mutual funds invest in the securities of foreign companies, which involves special risks and considerations not typically associated with investing in U.S. companies. These risks include devaluation of currencies, less reliable information about issuers, different securities transaction clearance and settlement practices, and possible adverse political and economic developments. Moreover, securities of many foreign companies and their markets may be less liquid and their prices more volatile than similar types of securities of comparable U.S. companies. Derivative financial instruments are used by the Plan's equity and fixed-income investment managers to remain fully invested in the asset class and to hedge currency risk. Leveraging of the Plan assets and speculation are prohibited. As of December 31, 2004 and 2003, approximately 44% and 43% of total Plan investments, respectively, were invested in the Oxy Stock Fund. 7 (Continued)

OCCIDENTAL PETROLEUM CORPORATION SAVINGS PLAN Notes to Financial Statements December 31, 2004 and 2003 (3) INVESTMENTS The following presents investments that represent 5% or more of the Plan's net assets (dollar amounts in thousands): DECEMBER 31 ----------------------------- 2004 2003 ------------ ------------ Oxy Stock* $ 525,498 447,535 Invesco Fund 197,625 167,755 Vanguard Employee Benefit Index Fund 170,812 169,976 Dodge & Cox Balanced Fund 69,181 60,447 All other investments less than 5% 277,911 215,562 ------------ ------------ Total investments $ 1,241,027 1,061,275 ============ ============ * Participant- and nonparticipant-directed. During 2004 and 2003, the Plan's investments (including gains and losses on investments bought and sold, as well as held during the year) appreciated in value by approximately $214,295,000 and $243,835,000, respectively, as follows (dollar amounts in thousands): 2004 2003 ------------ ------------ Common stock $ 160,924 164,188 Mutual funds 46,591 79,080 Interest in Master Trusts 6,780 567 ------------ ------------ $ 214,295 243,835 ============ ============ 8 (Continued)

OCCIDENTAL PETROLEUM CORPORATION SAVINGS PLAN Notes to Financial Statements December 31, 2004 and 2003 (4) OXY STOCK FUND Information regarding the net assets and the significant components of the changes in net assets relating to the Oxy Stock Fund, which includes both participant- and nonparticipant-directed investments is as follows (dollar amounts in thousands): DECEMBER 31 ----------------------------- 2004 2003 ------------ ------------ Net assets: Oxy Stock Fund $ 546,964 457,576 YEAR ENDED DECEMBER 31 ----------------------------- 2004 2003 ------------ ------------ Changes in net assets: Contributions $ 26,524 24,724 Investment income 10,914 11,415 Net appreciation in fair value of investments 158,115 149,051 Transfers between funds (40,319) (13,557) Benefits paid to participants (65,737) (44,745) Administrative expenses (109) (90) ------------ ------------ $ 89,388 126,798 ============ ============ (5) GUARANTEED INVESTMENT CONTRACTS The Invesco Fund (the Fund) includes investments in guaranteed investment contracts (GICs) and synthetic GICs. Both the Plan and the OPC Retirement Plan are invested in the Fund, managed by Invesco. The Plan's investment in the Fund is 45.89% and 41.45% at December 31, 2004 and 2003, respectively. The Plan's investments in GICs are included in the statements of net assets available for benefits at contract value (which represents contributions made under the contract plus earnings, less withdrawals and administrative expenses) because they are fully benefit responsive. For example, participants may ordinarily direct the withdrawal or transfer of all or a portion of their investment at contract value. Withdrawals resulting from events initiated by the Company, such as Plan termination, are not typically considered participant-initiated transactions. With such an event, some of the contracts contain contingencies that could lead to withdrawal penalties. However, since no such events are being contemplated at this time or the withdrawals resulting from such an event will be funded outside the contracts' provisions, these "potential" limitations do not jeopardize the contract value reporting for these investments. Contract value for the synthetic GICs is determined based on the fair value of the assets underlying the synthetic GICs. The difference between the fair value of the assets underlying the synthetic GICs and the contract value of the GICs is the value of the "wrapper" contract issued by a third party. The fair value for GICs varies based on the type of contract held (e.g., security-backed investments and general account investments). Fair value of the general account investment type GICs is derived by comparing the contract 9 (Continued)

OCCIDENTAL PETROLEUM CORPORATION SAVINGS PLAN Notes to Financial Statements December 31, 2004 and 2003 value, on a duration basis, to the yield curve. Fair value of the nonparticipating synthetic GICs is determined by comparing each contract, on a duration basis, to a Treasury yield curve at year-end, plus 40 basis points. Fair value for security-backed investment contracts was derived from outside sources, based on the type of investment held. GICs provide a fixed crediting interest rate, and a financially responsible entity guarantees liquidity at contract value prior to maturity for any and all participant-initiated benefit withdrawals, loans, or transfers arising under the terms of the Plan, which allows access for all participants. Synthetic GICs operate similarly to a separate account guaranteed investment contract, except that the assets are placed in a trust with ownership by the Plan rather than a separate account of the issuer and a financially responsible third party issues a wrapper contract that provides that participants can, and must, execute Plan transactions at contract value. Inasmuch as trust assets are owned by the Plan, the wrapper contract and the assets in trust are separately valued and disclosed. The wrapper contract is valued at the difference between the fair value of the trust assets and the contract value attributable by the wrapper to such assets. When considered together, the trust assets and the wrapper contract are reported at the wrapper contract value because participants are guaranteed return of principal and accrued interest. During 2004 and 2003, the average yield earned on amounts invested in the GICs was 4.62% and 4.69%, respectively. As of December 31, 2004 and 2003, the average crediting interest rate on such contracts was 4.59% and 4.73%, respectively. There were no valuation reserves recorded to adjust contract amounts during the Plan years. Crediting rate resets are applied to specific investment contracts, as determined at the time of purchase. The reset values for security-backed investment rates are a function of contract value, market value, yield, and duration. General account investment rates are based on a predetermined index rate of return, plus a fixed-basis point spread. 10 (Continued)

OCCIDENTAL PETROLEUM CORPORATION SAVINGS PLAN Notes to Financial Statements December 31, 2004 and 2003 The following is a reconciliation between the contract value and the fair value of the GICs at December 31, 2004 (dollar amounts in thousands): CREDITING DURATION INTEREST RATE CONTRACT FAIR (YEARS) PERCENTAGE VALUE VALUE ------------- ------------- ------------- ------------- Security-backed investments: Synthetics: Bank of America NT & SA 1.71 4.32 $ 15,223 15,432 ING Life Ins & Ann Co (#60032) 2.39 3.81 23,633 23,702 ING Life Ins & Ann Co (#60072) 2.31 3.11 3,874 3,917 JP Morgan Chase 3.54 5.07 22,287 23,148 Metropolitan Life 2.39 5.09 23,034 23,731 Monumental Life Ins. Co. #00595 4.14 5.71 30,748 31,573 State Street Bank 3.54 4.56 34,443 35,172 UBS AG 1.71 4.19 14,573 14,784 John Hancock Life Insurance 1.71 6.31 550 577 ------------- ------------- Total synthetics 168,365 172,036 ------------- ------------- General account investments: Monumental Life Insurance Co. 1.43 5.05 2,605 2,667 IRT Stable Value Fund 2.98 3.74 21,603 21,603 ------------- ------------- Total general account investments 24,208 24,270 ------------- ------------- Short-term investment fund: Bank of New York 5,052 5,052 ------------- ------------- Total guaranteed investment contracts 197,625 201,358 Less synthetic wrappers -- (3,671) Less difference between the fair value and contract values on the nonsynthetic GICs -- (62) 1 ------------- ------------- Total contract value of guaranteed investment contracts $ 197,625 197,625 ============= ============= 1 The difference of $62,000 between the fair value and the contract value of the guaranteed investment contracts is due to the security-backed investments and general account investments that do not have synthetic wrappers associated with them. 11 (Continued)

OCCIDENTAL PETROLEUM CORPORATION SAVINGS PLAN Notes to Financial Statements December 31, 2004 and 2003 The following is a reconciliation between the contract value and the fair value of the GICs at December 31, 2003 (dollar amounts in thousands): CREDITING DURATION INTEREST RATE CONTRACT FAIR (YEARS) PERCENTAGE VALUE VALUE ------------- ------------- ------------- ------------- Security-backed investments: Synthetics: Bank of America NT & SA 1.93 5.28 $ 9,708 10,188 ING Life Ins & Ann Co. 2.46 4.22 11,965 12,388 JP Morgan Chase 3.65 4.48 28,539 29,612 Metropolitan Life 2.46 5.53 20,158 21,353 Monumental Life Ins. Co. #00285 0.08 1.53 499 507 Monumental Life Ins. Co. #00595 4.49 5.83 26,245 27,368 State Street Bank 3.65 4.51 28,534 29,613 UBS AG 1.93 4.98 11,797 12,275 ING Life Ins & Ann Co. 1.90 2.99 5,886 6,013 John Hancock Life Insurance 1.93 5.80 745 794 ------------- ------------- Total Synthetics 144,076 150,111 ------------- ------------- General account investments: Monumental Life Insurance Co. 2.43 5.05 2,240 2,365 SunAmerica Life Insurance Co. 0.01 7.97 738 738 IRT Stable Value Fund 2.98 3.74 18,753 18,753 ------------- ------------- Total general account investments 21,731 21,856 ------------- ------------- Short-term investment fund: Northern Trust Company 1,948 1,948 ------------- ------------- Total guaranteed investment contracts 167,755 173,915 Less synthetic wrappers -- (6,035) Less difference between the fair value and contract values on the nonsynthetic GICs -- (125) 2 ------------- ------------- Total contract value of guaranteed investment contracts $ 167,755 167,755 ============= ============= 2 The difference of $125,000 between the fair value and the contract value of the guaranteed investment contracts is due to the security-backed investments and general account investments that do not have synthetic wrappers associated with them. (6) INVESTMENT IN MASTER TRUSTS The Plan invests in two Master Trust Investment Accounts (MTIA), a convertible bond fund managed by Advent Capital Management (Advent MTIA), and a small cap equity fund managed by Alliance Bernstein Institutional Investment Management (Bernstein MTIA). The Plan and the OPC Master Retirement Trust (MRT) each owns an undivided interest in these MTIAs. 12 (Continued)

OCCIDENTAL PETROLEUM CORPORATION SAVINGS PLAN Notes to Financial Statements December 31, 2004 and 2003 At December 31, 2004 and 2003, the Plan's investment in the assets of Advent MTIA represented an individual interest of approximately 12% and 15%, respectively. The following table presents the aggregate fair value of investments held by, and investment income earned by, the Advent MTIA, in which the Plan owns an undivided interest, as stated above (dollar amounts in thousands): DECEMBER 31 ----------------------------- 2004 2003 ------------ ------------ Investments at fair value as determined by quoted market price: Short-term investments $ 464 -- Common stock 727 -- Preferred stock 9,393 6,974 Corporate bonds 16,365 15,713 ------------ ------------ $ 26,949 22,687 ============ ============ YEAR ENDED DECEMBER 31 ----------------------------- 2004 2003 ------------ ------------ Investment income (loss): Net appreciation in fair value of investments: Common stock $ 54 -- Preferred stock 91 1,209 Corporate bonds 379 2,827 ------------ ------------ 524 4,036 Interest and dividends 848 710 Less investment expenses (186) (171) ------------ ------------ $ 1,186 4,575 ============ ============ 13 (Continued)

OCCIDENTAL PETROLEUM CORPORATION SAVINGS PLAN Notes to Financial Statements December 31, 2004 and 2003 Effective July 1, 2004, the Plan and the MRT combined their respective Alliance Bernstein investment accounts into the Bernstein MTIA. At December 31, 2004, the Plan's investment in the assets of the Bernstein MTIA represented an individual interest of approximately 49%. The following table presents the aggregate fair value of investments held by, and investment income earned by, the Bernstein MTIA, in which the Plan owns an undivided interest, as stated above (dollar amounts in thousands): DECEMBER 31 2004 ------------ Investments at fair value as determined by quoted market price: Short-term investments $ 9,462 Common stock 108,785 ------------ $ 118,247 ============ YEAR ENDED DECEMBER 31 2004 ------------ Investment income (loss): Net appreciation in fair value of investments: Common stock $ 29,218 Interest and dividends 568 Less investment expenses (370) ------------ $ 29,416 ============ (7) RELATED PARTY TRANSACTIONS The Trustee and OPC are parties in interest as defined by ERISA. The Trustee invests certain Plan assets in its Collective Short-Term Investment Fund and the OXY Stock Fund. Such transactions qualify as party-in-interest transactions permitted by the Department of Labor regulations. Expenses paid by the Plan to the Trustee for the years ended December 31, 2004 and 2003 were insignificant. (8) PLAN TERMINATION Although it has not expressed any intent to do so, the Company has the right under the Plan to discontinue its contributions at any time and to terminate the Plan subject to the provisions of ERISA. In the event of Plan termination, participants would become 100% vested in their Employer contributions. (9) TAX STATUS The Internal Revenue Service has determined and informed the Company by a letter dated June 14, 2004, that the Plan and related trust are designed in accordance with applicable sections of the IRC. The Committees, using their judgment and the advice of their advisors, believe that the Plan is currently designed and operating in a manner that preserves its tax-qualified status. 14 (Continued)

OCCIDENTAL PETROLEUM CORPORATION SAVINGS PLAN Notes to Financial Statements December 31, 2004 and 2003 (10) RECONCILIATION OF THE FINANCIAL STATEMENTS TO THE FORM 5500 The following is a reconciliation of net assets available for benefits per the financial statements to the Form 5500 (dollar amounts in thousands): 2004 2003 ------------ ------------ Net assets available for benefits per the financial statements $ 1,242,799 1,066,658 Amounts allocated to withdrawing participants (1,534) (762) ------------ ------------ Net assets available for benefits per the Form 5500 $ 1,241,265 1,065,896 ============ ============ The following is a reconciliation of benefits paid to participants per the financial statements to the Form 5500 for the years ended December 31, 2004 and 2003 (dollar amounts in thousands): 2004 2003 ------------ ------------ Benefits paid to participants per the financial statements $ 119,306 102,148 Amounts allocated to withdrawing participants at December 31, 2004 1,534 -- Amounts allocated to withdrawing participants at December 31, 2003 (762) 762 Amounts allocated to withdrawing participants at December 31, 2002 -- (4,205) ------------ ------------ Benefits paid to participants per the Form 5500 $ 120,078 98,705 ============ ============ Amounts allocated to withdrawing participants are recorded on the Form 5500 for benefit payments that have been processed and approved for payment prior to December 31, but are not yet paid as of that date. 15

SCHEDULE 1 OCCIDENTAL PETROLEUM CORPORATION SAVINGS PLAN Schedule H, Line 4i - Schedule of Assets (Held at End of Year) December 31, 2004 (Dollar amounts in thousands) (A) (B) (C) (D) (E) DESCRIPTION OF INVESTMENT, INCLUDING MATURITY DATE, RATE OF RELATED IDENTITY OF ISSUER, BORROWER, INTEREST, COLLATERAL, PAR, MATURITY CURRENT PARTY LESSOR, OR SIMILAR PARTY VALUE, OR DURATION COST* VALUE - ------- -------------------------------------------------- ------------------------------------------ ------------ ------------ Cash and cash equivalents $ 21,162 ------------ Common stock: ADC Telecommunications Inc. Common stock, 38,600 shares 103 Allstate Corp. Co. Common stock, 5,500 shares 285 Altria Group Inc. (fka Phillip Morris) Common stock, 4,500 shares 275 American Electric Pwr Co. Inc. Common stock, 9,100 shares 313 American International Group Inc. Common stock, 3,500 shares 230 Arrow Electr Inc. Common stock, 6,300 shares 153 Avnet Inc. Common stock, 7,000 shares 128 Bank America Corp. Common stock, 19,974 shares 939 Boeing Company Common stock, 7,400 shares 383 Borg Warner Inc. Common stock, 6,000 shares 325 BP PLC Spons ADR Common stock, 13,100 shares 765 Burl Northn Santa Fe Corp. Common stock, 4,500 shares 213 ChevronTexaco Corp. Common stock, 10,000 shares 525 Chubb Corp. Common stock, 7,000 shares 538 Citigroup Inc. Common stock, 23,700 shares 1,142 Comcast Corp. New Common stock, 12,100 shares 397 Conocophillips Common stock, 9,100 shares 790 Cooper Industries Inc. Common stock, 4,800 shares 326 CSX Corp. Common stock, 10,800 shares 433 Federal Home Loan Mtg. Corp. Common stock, 5,700 shares 420 Federal Natl Mtg. Assn. Common stock, 7,225 shares 515 Federated Dept. Stores Inc. Common stock, 4,600 shares 266 Flextronics Intl Ltd Common stock, 18,400 shares 254 General Electric Co. Common stock, 31,900 shares 1,164 Glaxo Smithkline PLC Common stock, 10,500 shares 498 Goldman Sachs Group Inc. Common stock, 2,300 shares 239 Hartford Financial Services Group Inc. Common stock, 2,700 shares 187 HCA Inc. Common stock, 10,200 shares 408 Hewlett Packard Co. Common stock, 36,300 shares 761 Ingram Micro Inc. Common stock, 11,575 shares 241 Interpublic Group of Companies Inc. Common stock, 12,300 shares 285 Jones Apparel Group Inc. Common stock, 6,800 shares 249 JPMorgan Chase & Co. Common stock, 19,400 shares 757 Kroger Co. Common stock, 13,300 shares 233 Lear Corp. Common stock, 6,200 shares 378 Lehman Bros Hldgs Inc. Common stock, 7,175 shares 628 Magna Intl Inc. Common stock, 3,300 shares 272 McDonald's Corp. Common stock, 12,800 shares 410 Meadwestva Co. Corp. Common stock, 11,464 shares 389 Medco Health Solutions Inc. Common stock, 11,900 shares 495 Metlife Inc. Common stock, 11,200 shares 454 Microsoft Corp. Common stock, 19,900 shares 532 National City Corp. Common stock, 15,700 shares 590 Norfolk Southern Corp. Common stock, 19,300 shares 698 Nortel Networks Corp. Common stock, 33,200 shares 116 ** ***Occidental Petroleum Corp. Common stock, 9,004,424 shares 380,017 525,498 Office Depot Inc. Common stock, 22,500 shares 391 Pepsico Inc. Common stock, 9,700 shares 506 Pfizer Inc. Common stock, 13,340 shares 359 Procter & Gamble Co. Common stock, 4,800 shares 264 Safeway Inc. Common stock, 17,900 shares 353 Sanmina-Sci Corp. Common stock, 14,300 shares 121 Smurfit-Stone Container Corp. Common stock, 14,800 shares 276 Solectron Corp. Common stock, 46,425 shares 247 Sprint Corp. (Fon Group) Common stock, 14,000 shares 348 St. Paul Travelers Companies Inc. Common stock, 9,664 shares 358 16 (Continued)

SCHEDULE 1 OCCIDENTAL PETROLEUM CORPORATION SAVINGS PLAN Schedule H, Line 4i - Schedule of Assets (Held at End of Year) December 31, 2004 (Dollar amounts in thousands) (A) (B) (C) (D) (E) DESCRIPTION OF INVESTMENT, INCLUDING MATURITY DATE, RATE OF RELATED IDENTITY OF ISSUER, BORROWER, INTEREST, COLLATERAL, PAR, MATURITY CURRENT PARTY LESSOR, OR SIMILAR PARTY VALUE, OR DURATION COST* VALUE - ------- -------------------------------------------------- ------------------------------------------ ------------ ------------ Suntrust Banks Inc. Common stock, 5,200 shares $ 384 Target Corp. Common stock, 7,700 shares 400 Tech Data Corp. Common stock, 4,900 shares 222 Tellabs Inc. Common stock, 33,500 shares 288 Textron Inc. Common stock, 10,100 shares 745 Time Warner Inc. Common stock, 30,100 shares 585 Torchmark Corp. Common stock, 5,300 shares 303 Unilever NV NY Share F Common stock, 3,700 shares 247 V F Corp. Common stock, 1,400 shares 78 Wachovia Corp. Common stock, 10,000 shares 526 ------------ Total common stock 552,201 ------------ Participant loans: ** 1,647 participant loans, various maturities, interest rates range from 2.0% - 7.0%, balances collateralized by participant account 17,942 ------------ Guaranteed investment contracts: Stable Value Fund: Nonsynthetic guaranteed investment contracts: IRT Stable Value Fund #20949-087, Yield 4.05% 21,603 Short-term investment fund #894000 Maturity 1/1/05, Yield 2.05% 5,052 Monumental Life Ins Co. #SV-04253Q Maturity 6/5/06, Yield 5.05% 2,667 ------------ Underlying assets 29,322 Less difference between the fair value and contract values on the nonsynthetic GICs (62) ------------ Total nonsynthetic guaranteed investment contracts 29,260 ------------ Synthetic guaranteed investment contracts: John Hancock Life Insurance #9698, Yield 6.31% 577 Wrapper Synthetic Wrapper Agreement (27) ------------ Total Contract Value of John Hancock Life Insurance 550 ------------ Bank of America #01-204, Yield 4.32% 15,432 Wrapper Synthetic Wrapper Agreement (209) ------------ Total Contract Value of Bank of America 15,223 ------------ ING Life Ins & Ann Co. Contract #60032, Yield 3.81% 23,702 Wrapper Synthetic Wrapper Agreement (69) ------------ Total Contract Value of ING Life Ins & Ann Co. Contract 23,633 ------------ JP Morgan Chase #429939-MIA, Yield 5.07% 23,148 Wrapper Synthetic Wrapper Agreement (861) ------------ Total Contract Value of JP Morgan Chase 22,287 ------------ Metropolitan Life Insurance Co. #28821, Yield 5.09% 23,731 Wrapper Synthetic Wrapper Agreement (697) ------------ Total Contract Value of Metropolitan Life Insurance Co. 23,034 ------------ 17 (Continued)

SCHEDULE 1 OCCIDENTAL PETROLEUM CORPORATION SAVINGS PLAN Schedule H, Line 4i - Schedule of Assets (Held at End of Year) December 31, 2004 (Dollar amounts in thousands) (A) (B) (C) (D) (E) DESCRIPTION OF INVESTMENT, INCLUDING MATURITY DATE, RATE OF RELATED IDENTITY OF ISSUER, BORROWER, INTEREST, COLLATERAL, PAR, MATURITY CURRENT PARTY LESSOR, OR SIMILAR PARTY VALUE, OR DURATION COST* VALUE - ------- -------------------------------------------------- ------------------------------------------ ------------ ------------ Monumental Life Ins Co. #00595TR, Yield 5.71% $ 31,573 Wrapper Synthetic Wrapper Agreement (825) ------------ Total Contract Value of Monumental Life Ins Co. 30,748 ------------ State Street Bank #103093, Yield 4.56% 35,172 Wrapper Synthetic Wrapper Agreement (729) ------------ Total Contract Value of State Street Bank 34,443 ------------ UBS AG #5152, Yield 4.19% 14,784 Wrapper Synthetic Wrapper Agreement (211) ------------ Total Contract Value of UBS AG 14,573 ------------ ING Life Ins & Ann Co. Contract Cash -- 23 US Treasury Maturity 8/15/07, Yield 2.75% 2,751 US Treasury Maturity 11/15/07, Yield 2.63% 1,143 US Treasury Maturity 11/15/04, Yield 5.88% -- ------------ Underlying Assets 3,917 ING Life Ins & Ann Co. Wrapper Synthetic Wrapper Agreement (43) ------------ Total Contract Value of ING Life Ins & Ann Co. Contract 3,874 ------------ Total guaranteed investment contracts 197,625 ------------ Mutual funds: MFO Causeway Cap Mgmt. Intl Value Inst'l 1,430,817 shares 23,222 MFO Cmg Hi Yield Fd 439,210 shares 3,610 MFO Dodge & Cox Balanced Fd 871,848 shares 69,181 MFO Fidelity Magellan Fd Inc Open End Fd 461,607 shares 47,910 MFO Hbr Fd Cap Appreciation Fd 449,583 shares 12,890 MFO Pimco Fds Pac Invt Mgmt Ser 1,136,601 shares 12,128 MFO Vanguard Emp Benefit Index Fd 1,618,458 shares 170,812 MFO Vanguard Mid-Cap Index Inst'l Fd 1,726,537 shares 27,055 MFO Vanguard Reit Index Inst'l Fund 1,961,741 shares 24,326 ------------ Total mutual funds 391,134 ------------ Plan Interest in Master Trusts: Advent Unit Master Trust 299,952 shares 3,223 MFO Alliance Bernstein Small Cap 5,061,834 shares 57,740 ------------ Total Plan Interest in Master Trusts 60,963 ------------ Total $ 1,241,027 ============ * Cost information omitted for participant-directed investment. ** Party-in-interest investment. *** Includes nonparticipant-directed investments. No investment transactions exceeded 5% of the Plan's net assets. See accompanying report of independent registered public accounting firm. 18

SCHEDULE 2 OCCIDENTAL PETROLEUM CORPORATION SAVINGS PLAN Schedule H, Line 4j - Schedule of Reportable Transactions Year ended December 31, 2004 (Dollar amounts in thousands) CURRENT VALUE OF EXPENSE ASSET INCURRED ON DESCRIPTION OF ASSET (INCLUDE WITH TRANS- NET GAIN INTEREST RATE AND MATURITY IN PURCHASE SELLING LEASE TRANS- COST OF ACTION OR IDENTITY OF PARTY INVOLVED CASE OF LOAN) PRICE PRICE RENTAL ACTION ASSET DATE (LOSS) - ------------------------------ ------------------------------ -------- -------- -------- -------- -------- -------- -------- Series of transactions: Invesco Oxy Invesco Units: 114 Acquisitions $ 60,267 -- -- -- 60,267 60,267 -- 86 Dispositions -- 34,439 -- -- 30,759 34,439 3,680 Alliance Bernstein Inst Inv Alliance Bernstein Small Cap Units: Management 80 Acquisitions 57,233 -- -- -- 57,233 57,233 -- 56 Dispositions -- 6,140 -- -- 6,139 6,140 1 * The Bank of New York Collective Short-Term Investment Fund: 593 Acquisitions 105,117 -- -- -- 105,117 105,117 -- 352 Dispositions -- 83,948 -- -- 83,948 83,948 -- * Represents a party-in-interest as defined by ERISA. See accompanying report of independent registered public accounting firm. 19

EXHIBIT INDEX Exhibit No. Exhibit - -------------------------------------------------------------------------------- 23.1 Consent of Independent Registered Public Accounting Firm

                                                                    EXHIBIT 23.1


            CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM


The Board of Directors
Occidental Petroleum Corporation:


We consent to the incorporation by reference in the registration statement (No.
333-83124) on Form S-8 of Occidental Petroleum Corporation and the Occidental
Petroleum Corporation Savings Plan of our report dated June 24, 2005, with
respect to the statements of net assets available for benefits as of December
31, 2004 and 2003, the related statements of changes in net assets available for
benefits for the years then ended, and supplemental schedules, which report
appears in the December 31, 2004 annual report on Form 11-K of the Occidental
Petroleum Corporation Savings Plan.




/s/ KPMG LLP

Los Angeles, California
June 28, 2005