UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    Form 13F

                               Form 13F COVER PAGE

Report for the Calendar Year or Quarter Ended:   September 30, 2010

Check here if Amendment [ ]; Amendment Number:
     This Amendment (Check only one.):           [ ]  is a restatement.
                                                 [ ]  adds new holdings entries.

Institutional Investment Manager Filing this Report:

Name:          Occidental Petroleum Corporation
Address:       10889 Wilshire Boulevard
               Los Angeles, California 90024

Form 13F File Number:  28-10313


The institutional investment manager filing this report and the person by whom
it is signed hereby represent that the person signing the report is authorized
to submit it, that all information contained herein is true, correct and
complete, and that it is understood that all required items, statements,
schedules, lists, and tables, are considered integral parts of this form.

Person Signing this Report on Behalf of Reporting Manager:

Name:     Roy Pineci
          Vice President, Controller and Principal Accounting Officer
          Occidental Petroleum Corporation
Phone:    (310) 208-8800

Signature, Place, and Date of Signing:

     /s/ ROY PINECI                 Los Angeles, California     November 2, 2010
     ---------------------------    -----------------------    -----------------
             [Signature]                 [City, State]               [Date]

Report Type (Check only one.):

[X]    13F HOLDINGS REPORT. (Check here if all holdings of this reporting
       manager are reported in this report.)

[ ]    13F NOTICE. (Check here if no holdings reported are in this report, and
       all holdings are reported by other reporting manager(s).)

[ ]    13F COMBINATION REPORT. (Check here if a portion of the holdings for this
       reporting manager are reported in this report and a portion are reported
       by other reporting manager(s).)


Form 13F SUMMARY PAGE Report Summary: Number of Other Included Managers: 4 Form 13F Information Table Entry Total: 38 Form 13F Information Table Value Total: $111,110 (thousands) List of Other Included Managers: Provide a numbered list of the name(s) and Form 13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report. No. 13F File Number Name 1 28-12381 Phibro LLC 2 28-13910 Phibro Trading LLC 3 28-13909 Oxy Energy Services Inc. 4 28-13908 Occidental Petroleum Investment Co.

FORM 13F INFORMATION TABLE COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8 - ---------------------------- -------------- --------- -------- ---------------- -------------- -------- -------------------- VOTING AUTHORITY VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER -------------------- NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE - ---------------------------- -------------- --------- -------- ------- --- ---- -------------- -------- ------ ------ ------ ALCOA INC COM 013817101 666 55000 SH SHARED-DEFINED 1,2,3,4 55000 ALUMINA LTD SPONSORED ADR 022205108 70 10000 SH SHARED-DEFINED 1,2,3,4 10000 ANADARKO PETE CORP COM 032511107 1533 26875 SH SHARED-DEFINED 1,2,3,4 26875 APACHE CORP COM 037411105 1806 18472 SH SHARED-DEFINED 1,2,3,4 18472 BRIGHAM EXPLORATION CO COM 109178103 689 36768 SH SHARED-DEFINED 1,2,3,4 36768 CANADIAN NAT RES LTD COM 136385101 3079 88991 SH SHARED-DEFINED 1,2,3,4 88991 CENTURY ALUM CO COM 156431108 66 5000 SH SHARED-DEFINED 1,2,3,4 5000 CHESAPEAKE ENERGY CORP COM 165167107 1095 48340 SH SHARED-DEFINED 1,2,3,4 48340 CHEVRON CORP NEW COM 166764100 6856 84595 SH SHARED-DEFINED 1,2,3,4 84595 CIMAREX ENERGY CO COM 171798101 622 9405 SH SHARED-DEFINED 1,2,3,4 9405 CME GROUP INC COM 12572Q105 2084 8000 SH SHARED-DEFINED 1,2,3,4 8000 CONOCOPHILLIPS COM 20825C104 2561 44591 SH SHARED-DEFINED 1,2,3,4 44591 CONTINENTAL RESOURCES INC COM 212015101 605 13051 SH SHARED-DEFINED 1,2,3,4 13051 CORE LABORATORIES N V COM N22717107 2083 23664 SH SHARED-DEFINED 1,2,3,4 23664 COSAN LTD SHS A G25343107 209 18000 SH SHARED-DEFINED 1,2,3,4 18000 DEVON ENERGY CORP NEW COM 25179M103 2875 44402 SH SHARED-DEFINED 1,2,3,4 44402 EOG RES INC COM 26875P101 726 7809 SH SHARED-DEFINED 1,2,3,4 7809 EXXON MOBIL CORP COM 30231G102 1846 29869 SH SHARED-DEFINED 1,2,3,4 29869 FREEPORT-MCMORAN COPPER & GO COM 35671D857 529 6200 SH SHARED-DEFINED 1,2,3,4 6200 HALLIBURTON CO COM 406216101 4098 123922 SH SHARED-DEFINED 1,2,3,4 123922 INTERCONTINENTALEXCHANGE INC COM 45865V100 331 3162 SH SHARED-DEFINED 1,2,3,4 3162 MARATHON OIL CORP COM 565849106 154 4664 SH SHARED-DEFINED 1,2,3,4 4664 MOLYCORP INC DEL COM 608753109 113 4000 SH SHARED-DEFINED 1,2,3,4 4000 MURPHY OIL CORP COM 626717102 1464 23639 SH SHARED-DEFINED 1,2,3,4 23639 NOBLE ENERGY INC COM 655044105 282 3750 SH SHARED-DEFINED 1,2,3,4 3750 RANGE RES CORP COM 75281A109 492 12896 SH SHARED-DEFINED 1,2,3,4 12896 RARE ELEMENT RES LTD COM 75381M102 147 17000 SH SHARED-DEFINED 1,2,3,4 17000 ROYAL DUTCH SHELL PLC SPONS ADR A 780259206 2888 47899 SH SHARED-DEFINED 1,2,3,4 47899 SCHLUMBERGER LTD COM 806857108 2437 39557 SH SHARED-DEFINED 1,2,3,4 39557 SELECT SECTOR SPDR TR SBI INT-ENERGY 81369Y506 25775 459775 SH SHARED-DEFINED 1,2,3,4 459775 SOUTHWESTERN ENERGY CO COM 845467109 353 10565 SH SHARED-DEFINED 1,2,3,4 10565 SPDR SERIES TRUST S&P OILGAS EXP 78464A730 5873 138977 SH SHARED-DEFINED 1,2,3,4 138977 SUNCOR ENERGY INC NEW COM 867224107 2441 75007 SH SHARED-DEFINED 1,2,3,4 75007 TETRA TECHNOLOGIES INC DEL COM 88162F105 335 32835 SH SHARED-DEFINED 1,2,3,4 32835 UNITED STATES NATL GAS FUND UNIT 912318102 7402 1200000 SH SHARED-DEFINED 1,2,3,4 1200000 UNITED STATES OIL FUND LP UNITS 91232N108 22939 658400 SH SHARED-DEFINED 1,2,3,4 658400 VALE S A ADR 91912E105 313 10000 SH SHARED-DEFINED 1,2,3,4 10000 WHITING PETE CORP NEW COM 966387102 3273 34272 SH SHARED-DEFINED 1,2,3,4 34272