Mr. Yan Dong ( 董彦 ): Reservoir engineer working for Repsol. His areas of responsibility are exploration, appraisal, development, and production of Repsol’s assets in the US. Prior to Repsol, he worked for Shell and Chevron. He earned his MS degree in Petroleum Engineering from The University of Texas at Austin. He is a registered professional engineer in the state of Texas. He’s interested in all aspects of reservoir engineering, especially reservoir simulation, well testing, and SCAL. He jogs and swims to keep him fit, kind of as hobbies, not really good at sports.