David M. Demshur Richard L. Bergmark D. John Ogren Jan Willem Sodderland Michael C. Kearney Margaret A. van Kempen Charles L. Dunlap  Lucia van Geuns MARKET INFORMATION TRANSFER AGENT AND REGISTRAR INDEPENDENT AUDITORS SENIOR OPERATIONS MANAGEMENT SENIOR CORPORATE MANAGEMENT BOARD OF SUPERVISORY DIRECTORS President and  Chief Executive Officer Chairman of the Board, President,  and Chief Executive Officer Executive Vice President  and Chief Financial Officer Executive Vice President  and Chief Financial Officer Senior Vice President and  Chief Operating Officer Vice President, Secretary,  and General Counsel Chief Executive Officer, Transmontaigne Partners Vice President, Treasurer,  and Chief Accounting Officer Senior Fellow, Clingendael International Energy Programme Former President and Chief Executive Officer, DeepFlex, Inc. Global Human Resources Director Managing Director, Van Kempen Associates Vice President,  Reservoir Description Vice President,  Reservoir Description  Former Senior Vice President,  Conoco, Inc.  Chairman of the Supervisory Board,  Bank of Tokyo-Mitsubishi UFJ  (Holland) N.V. Vice President,  Production Enhancement Vice President,  Production Enhancement Managing Member,  Hudson Capital Advisors, LLC Vice President,  Reservoir Management Vice President,  Business Development PricewaterhouseCoopers LLP 1201 Louisiana, Suite 2900 Houston, Texas 77002 Computershare Trust  Company, N.A. 250 Royall Street Canton, MA 02021 Listed on NYSE Symbol: CLB US Listed on NYSE Euronext Symbol: CLB NA David M. Demshur,  Chairman of the Board David M. Demshur Richard L. Bergmark Richard L. Bergmark,  Director & Officer Monty L. Davis Charles L. Dunlap, Director Mark F. Elvig Michael C. Kearney, Director  Gwendolyn Y. Schreffler Stephen J. Lee Margaret A. van Kempen, Director D. John Ogren, Director Peter W. G. Boks Michael J. Flecker Jan Willem Sodderland, Director Stephen D. Weinroth, Chairman Emeritus Jeffrey M. West Randall S. Miller James L. Gresham C. Brig Miller Lucia van Geuns, Director 