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Corporate Management


David M. Demshur

Chairman of the Board
President and Chief Executive Officer


Richard L. Bergmark

Executive Vice President
Chief Financial Officer


Monty L. Davis

Senior Vice President
Chief Operating Officer


Mark F. Elvig

Vice President, Secretary
General Counsel


C. Brig Miller

Vice President, Treasurer
Chief Accounting Officer


Gwendolyn Y. Schreffler

Vice President,
Corporate Human Resources

Operations Management


Stephen J. Lee

Vice President
Reservoir Description


Peter W. G. Boks

Vice President
Reservoir Description


Michael J. Flecker

Vice President
Production Enhancement


Jeffrey M. West

Vice President
Production Enhancement


Randall S. Miller

Vice President
Reservoir Management


James L. Gresham

Vice President
Business Development