IADC Names New Officers

Houston, 3 January, 2012 – Daniel W. Rabun, Chairman, President and CEO, Ensco, plc, has been elected 2012 Chairman of the International Association of Drilling Contractors (IADC). In addition, David W. Williams, Chairman of the Board, President and CEO, Noble Corporation, was elected Vice Chairman. Messrs Rabun and Williams will head up IADC’s 2012 leadership team, which includes the following newly elected officers:

• Secretary-Treasurer: Scott Daniels, Atwood Oceanics, Director – Financial Reporting
• President: Lee Hunt, International Association of Drilling Contractors
• Executive Vice President – Government Affairs: Brian T. Petty, International Association of Drilling Contractors
• Vice President, Land Division: Ronnie Witherspoon, Superior Well Services, a Nabors Company, President
• Vice President, Offshore Division: Thomas P. Burke, Rowan Companies, Chief Operating Officer
• Vice President, Drilling & Well Services Division: David Reid, National Oilwell Varco, Senior Vice President Global Accounts and Chief Sales Officer

According to Dr. Lee Hunt, IADC president, “I look forward to working with this prestigious group of officers as IADC continues to concentrate on policy issues, expanded international training practices, health, safety and environmental policy initiatives for the onshore and offshore drilling industry worldwide.”

About IADC

IADC is dedicated to enhancing the interests of oil-and-gas and geothermal drilling contractors worldwide. IADC’s contract-drilling members own most of the world’s land and offshore drilling units and drill the vast majority of the wells that produce the planet’s oil and gas. IADC’s membership also includes oil-and-gas producers, and manufacturers and suppliers of oilfield equipment and services. Founded in 1940, IADC’s mission is to improve industry health, safety and environmental practices; advance drilling and completion technology; and champion responsible standards, practices, legislation and regulations that provide for safe, efficient and environmentally sound drilling operations worldwide. IADC holds Accredited Observer status at the International Maritime Organization and the International Seabed Authority, specialized agencies of the United Nations. The Association is a leader in developing standards for industry training, notably its Well Control Accreditation Program (WellCAP)® and rig-floor orientation program, RIG PASS®. IADC is headquartered in Houston and has offices in Washington D.C., the Netherlands, Thailand, and the United Arab Emirates, as well as chapters in the UK, Venezuela, Brazil, Australasia, South Central Asia, Southeast Asia, the Middle East and across the United States. For more information, visit the IADC website at www.iadc.org.