CAWLEY, GILLESPIE & ASSOCIATES, INC.
PETROLEUM CONSULTANTS
| | | | | | | | |
| 6500 RIVER PLACE BLVD, SUITE 3-200 | 306 WEST SEVENTH STREET, SUITE 302 | 1000 LOUISIANA STREET, SUITE 1900 |
| AUSTIN, TEXAS 78730-1111 | FORT WORTH, TEXAS 76102-4987 | HOUSTON, TEXAS 77002-5008 |
| 512-249-7000 | 817- 336-2461 | 713-651-9944 |
www.cgaus.com
CONSENT OF INDEPENDENT PETROLEUM ENGINEERS
We hereby consent to the incorporation by reference in the registration statement on Form S-3 (the “Registration Statement”) of Occidental Petroleum Corporation (“Occidental”) anticipated to be filed on or around July 28, 2025, of our report dated January 24, 2024, with respect to our estimates of proved reserves and future net revenue to CrownRock, L.P. included in the Form 8-K of Occidental filed with the Securities and Exchange Commission on July 19, 2024.
/s/ W. Todd Brooker
W. Todd Brooker, President
CAWLEY, GILLESPIE & ASSOCIATES, INC.
Texas Registered Engineering Firm F-693
Austin, Texas
July 28, 2025