EXHIBIT 23.4
DEGOLYER AND MACNAUGHTON
Canada Limited
311 – 6th Avenue SW, Suite 1430
Energy Plaza, East Tower
Calgary, Alberta, Canada T2P 3H2
January 30, 2006
Occidental Petroleum Corporation
Gentlemen,
As Petroleum Engineers, we hereby consent to the inclusion of the information included or incorporated by reference in the registration statements (Nos. 33-14662, 33-47636, 33-59395, 33-64719, 333-49207, 333-72719, 333-78031, 333-37970, 333-55404, 333-63444, 333-82246, 333-83124, 333-96951, 333-104827, 333-115099 and 333-124732) on Forms S-3 and S-8 of Occidental Petroleum Corporation, with respect to the oil and gas reserves of Vintage Petroleum, Inc. for Canada, the future net revenues from such reserves, and the present value thereof, which information has been included or incorporated by reference such registration statements in reliance upon the report of this firm and upon the authority of this firm as experts in petroleum engineering.
Very truly yours,
/s/ | COLIN P. OUTTRIM |
Colin P. Outtrim, P. Eng
Senior Vice President
DeGolyer and MacNaughton
Canada Limited