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Corporate Management


D. M. Demshur

Chairman of the Board
President and Chief Executive Officer


R. L. Bergmark

Executive Vice President
Chief Financial Officer


M. L. Davis

Senior Vice President
Chief Operating Officer


M. F. Elvig

Vice President, Secretary
General Counsel


C. B. Miller

Vice President, Treasurer
Chief Accounting Officer


G. Y. Schreffler

Global Human Resources Director

Operations Management


S. J. Lee

Vice President
Reservoir Description


P. W. G. Boks

Vice President
Reservoir Description


M. J. Flecker

Vice President
Production Enhancement


J. M. West

Vice President
Production Enhancement


R. S. Miller

Vice President
Reservoir Management


J. L. Gresham

Vice President
Business Development