Occidental Petroleum 2011 Annual Report Download - page 117

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EXHIBIT 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
To the Board of Directors
Occidental Petroleum Corporation:
We consent to the incorporation by reference in the registration statements (Nos. 33-64719, 333-55404, 333-63444, 333-78031, 333-
83124, 333-96951, 333-104827, 333-124732, 333-142705 and 333-176308) on Forms S-3 and S-8 of Occidental Petroleum Corporation of
our reports dated February 23, 2012, with respect to the consolidated balance sheets of Occidental Petroleum Corporation as of December 31, 2011
and 2010, and the related consolidated statements of income, stockholders’ equity, comprehensive income, and cash flows for each of the years in the
three-year period ended December 31, 2011 and the related financial statement schedule, and the effectiveness of internal control over financial
reporting as of December 31, 2011, which reports appear in the December 31, 2011 annual report on Form 10-K of Occidental Petroleum
Corporation.
/s/ KPMG LLP
Los Angeles, California
February 23, 2012