Chesapeake Energy Corp. (CHK) said May 4 that Frank Patterson will join the Oklahoma City company as executive vice president of exploration, land and subsurface technology.

Patterson replaces John Kapchinske, who recently retired from the company. He will report to Chesapeake’s CEO Doug Lawler.

“Frank is a world-class explorer with more than 30 years of experience developing and executing exploration programs," Lawler said in a statement. "His leadership will propel our exploration resources and capabilities to new levels of performance while helping drive the greatest value from our outstanding portfolio.”

Patterson served in various roles at Anadarko Petroleum Corp. (APC) from 2006 to 2015.

Most recently he served as senior vice president of international exploration, where he was responsible for leading business development and international new ventures, including developing and executing exploration and appraisal plans for all of Anadarko’s international acreage positions. He led the teams responsible for the discovery and appraisal of multiple large discoveries across Ghana, Mozambique, Brazil and Cote d’Ivoire.

He previously worked as vice president of deepwater exploration at Kerr-McGee, where he was responsible for the capture, development and execution of prospect inventory in the Gulf of Mexico, and as manager of geology at Sun E&P/Oryx Energy.

He holds a Bachelor of Science in geology from the University of Oklahoma and serves on the board of visitors at the University of Oklahoma’s Mewbourne College of Earth and Energy.