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

                                    Form 13F

                               Form 13F COVER PAGE

Report for the Calendar Year or Quarter Ended:   June 30, 2011

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     August 3, 2011
     ---------------------------    -----------------------    -----------------
             [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: 42 Form 13F Information Table Value Total: $132,351 (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 28-13910 Phibro Trading LLC 2 28-13909 Oxy Energy Services Inc. 3 28-13908 Occidental Petroleum Investment Co. 4 28-12381 Phibro LLC

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 1262 79572 SH SHARED-DEFINED 1,2,3 79572 ANADARKO PETE CORP COM 032511107 2346 30561 SH SHARED-DEFINED 1,2,3 30561 APACHE CORP COM 037411105 1345 10898 SH SHARED-DEFINED 1,2,3 10898 AVALON RARE METALS INC COM 053470100 139 20000 SH SHARED-DEFINED 1,2,3 20000 BRIGHAM EXPLORATION CO COM 109178103 300 10026 SH SHARED-DEFINED 1,2,3 10026 CANADIAN NAT RES LTD COM 136385101 1046 24998 SH SHARED-DEFINED 1,2,3 24998 CHESAPEAKE ENERGY CORP COM 165167107 2453 82603 SH SHARED-DEFINED 1,2,3 82603 CHEVRON CORP NEW COM 166764100 3826 37206 SH SHARED-DEFINED 1,2,3 37206 CIMAREX ENERGY CO COM 171798101 355 3949 SH SHARED-DEFINED 1,2,3 3949 CME GROUP INC COM 12572Q105 1750 6000 SH SHARED-DEFINED 1,2,3 6000 CONOCOPHILLIPS COM 20825C104 2191 29135 SH SHARED-DEFINED 1,2,3 29135 CONSOL ENERGY INC COM 20854P109 711 14664 SH SHARED-DEFINED 1,2,3 14664 CONTINENTAL RESOURCES INC COM 212015101 479 7373 SH SHARED-DEFINED 1,2,3 7373 CORE LABORATORIES N V COM N22717107 2252 20194 SH SHARED-DEFINED 1,2,3 20194 COSAN LTD SHS A G25343107 494 40155 SH SHARED-DEFINED 1,2,3 40155 DEVON ENERGY CORP NEW COM 25179M103 2097 26610 SH SHARED-DEFINED 1,2,3 26610 EXXON MOBIL CORP COM 30231G102 1470 18066 SH SHARED-DEFINED 1,2,3 18066 FREEPORT-MCMORAN COPPER & GO COM 35671D857 2068 39088 SH SHARED-DEFINED 1,2,3 39088 GENERAL MOLY INC COM 370373102 223 50000 SH SHARED-DEFINED 1,2,3 50000 HALLIBURTON CO COM 406216101 5939 116458 SH SHARED-DEFINED 1,2,3 116458 HESS CORP COM 42809H107 3886 51983 SH SHARED-DEFINED 1,2,3 51983 INTERCONTINENTALEXCHANGE INC COM 45865V100 394 3162 SH SHARED-DEFINED 1,2,3 3162 MARATHON OIL CORP COM 565849106 265 5038 SH SHARED-DEFINED 1,2,3 5038 MARKET VECTORS ETF TR GOLD MINER ETF 57060U100 5553 101721 SH SHARED-DEFINED 1,2,3 101721 MOLYCORP INC DEL COM 608753109 472 7727 SH SHARED-DEFINED 1,2,3 7727 MOSAIC CO NEW COM 61945C103 1519 22420 SH SHARED-DEFINED 1,2,3 22420 MURPHY OIL CORP COM 626717102 2187 33302 SH SHARED-DEFINED 1,2,3 33302 NATIONAL OILWELL VARCO INC COM 637071101 7614 97356 SH SHARED-DEFINED 1,2,3 97356 OIL SVC HOLDRS TR DEPOSTRY RCPT 678002106 14268 93868 SH SHARED-DEFINED 1,2,3 93868 PEABODY ENERGY CORP COM 704549104 1521 25826 SH SHARED-DEFINED 1,2,3 25826 PETROLEO BRASILEIRO SA PETRO SPONSORED ADR 71654V408 1010 29820 SH SHARED-DEFINED 1,2,3 29820 RANGE RES CORP COM 75281A109 263 4746 SH SHARED-DEFINED 1,2,3 4746 RARE ELEMENT RES LTD COM 75381M102 111 10000 SH SHARED-DEFINED 1,2,3 10000 ROYAL DUTCH SHELL PLC SPONS ADR A 780259206 5213 73288 SH SHARED-DEFINED 1,2,3 73288 SCHLUMBERGER LTD COM 806857108 6459 74758 SH SHARED-DEFINED 1,2,3 74758 SELECT SECTOR SPDR TR SBI INT-ENERGY 81369Y506 33884 449694 SH SHARED-DEFINED 1,2,3 449694 SPDR SERIES TRUST S&P OILGAS EXP 78464A730 5137 87400 SH SHARED-DEFINED 1,2,3 87400 STATOIL ASA SPONSORED ADR 85771P102 501 19684 SH SHARED-DEFINED 1,2,3 19684 SUNCOR ENERGY INC NEW COM 867224107 3203 81923 SH SHARED-DEFINED 1,2,3 81923 TETRA TECHNOLOGIES INC DEL COM 88162F105 93 7262 SH SHARED-DEFINED 1,2,3 7262 UNITED STATES STL CORP NEW COM 912909108 3068 66643 SH SHARED-DEFINED 1,2,3 66643 WHITING PETE CORP NEW COM 966387102 2984 52432 SH SHARED-DEFINED 1,2,3 52432