Jeff Simmons

Jeff F. Simmons
Senior Vice President
Technical Planning and Evaluation


Jeff Simmons is Senior Vice President of Technical Planning and Evaluation for Occidental. In this position, he assesses the technical and engineering strength of Occidental’s key investments to ensure maximization of production, cash flow and earnings. Mr. Simmons also assists in the capital allocation process, ensuring optimization of return on capital employed and finding-and-development expenditures. He directs the corporate reserve audit function, as well as Occidental’s international exploration and growth initiatives in South America.

Mr. Simmons has nearly 35 years of industry experience, including managing asset development in the Permian Basin, subsurface engineering and research in enhanced oil recovery. He is widely recognized throughout the industry as an expert in enhanced oil recovery processes and design. Mr. Simmons also has significant experience with both the development of new technology and managing the organizational collaboration for implementation of technology with business impact. He previously was Executive Vice President of Growth and Operations Support for Oxy Oil and Gas Corporation, where he was responsible for growth activities, including exploration and business development. He has also served as Executive Vice President, Worldwide Engineering and Technical Strategies, and President and General Manager of the Permian Enhanced Oil Recovery business unit. Mr. Simmons joined Occidental in 2000 with the acquisition of Altura Energy.

A recipient of the Society of Petroleum Engineers Cedric Ferguson Medal, Mr. Simmons holds several patents on well testing techniques. He has also served on the External Advisory Committee to the Department of Petroleum and Geosystems Engineering at the University of Texas – Austin and as a board member of the Texas Independent Producers and Royalty Owners (TIPRO). Mr. Simmons currently serves on the board of Khalifa University for Science and Technology in Abu Dhabi.​

Mr. Simmons holds a Bachelor of Science degree in Mechanical Engineering from the University of Missouri-Rolla and a Master of Science in Petroleum Engineering from Stanford University.

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