David A. Wood is the Principal Consultant of DWA Energy Limited, UK, specializing in the integration of technical, economic, fiscal, risk and strategic information to aid asset and portfolio evaluations and project planning decisions. He has more than 35 years of international oil and gas experience spanning project operations, technical evaluations, research, contract negotiations and senior corporate management. In the 1980s and 1990s he held senior technical and corporate positions with Phillips Petroleum, Amoco, Lundin Oil and Canadian independents. Since 1998 David has worked as a consultant providing evaluation, expert-witness support and training to companies and government agencies around the world. He served as the editor-in-chief of the Journal of Natural Gas Science and Engineering from 2013 to 2016.