Chaparral Energy, Inc. announced several additions to the company's senior leadership team, which it has made during the last 18 months. Additions include: Josh Walker as Vice President of Completions and Operations, Clint Calhoun as Vice President of Resource Development. Before joining Chaparral, Mr. Walker served as the Innovation Manager at Chesapeake Energy, where he assembled and led a team focused on operations research and development, new and emerging technologies and data analytics. Before joining Chaparral, Mr. Calhoun co-founded the Merge and SCOOP focused Travis Peak Resources in 2013, where he served as Vice President of Engineering and was responsible for providing assessment and development strategy, budgeting and management of day-to-day operations for its Appalachia and Mid-Continent assets.