Oklahoma City, OK-based Chaparral Energy LLC has appointed John D. Wehrle to the role of senior vice president of business development and finance, and David R. Winchester to the role of senior vice president of drilling operations. Wehrle previously served as managing director and co-head of US operations for Scotia Waterous and most recently as a consultant for Apollo Global Management's Natural Resources group. Winchester was most recently with Chesapeake Energy Corp., where he served as vice president of drilling operations. Wehrle and Winchester will both report to president and COO Earl Reynolds.
Prior to his time at Scotia Waterous, Wehrle spent nearly a decade at Goldman Sachs & Co. and RBC Dominion Securities, as well as time at private equity-backed and public companies, including Bill Barrett Corporation and Vantage Energy. Wehrle holds a Bachelor of Commerce (Honours) degree from the University of Manitoba.
Before working at Chesapeake Energy, Winchester spent time at Anadarko Petroleum, Winmill Petroleum, Chevron USA and Gulf Oil. He holds a Master of Science in petroleum engineering degree and a Juris Doctor from the University of Oklahoma.