Struggling oilfield firm Pioneer Energy gobbled up by rival as oil industry recovers FacebookTwitterEmail 1of3 Andy Hendricks, left, president and CEO of Patterson-UTI, and Mark Siegel, chairman of Patterson-UTI, pose for a portrait at the Houston Chronicle, Thursday, April 27, 2017, in Houston. ( Jon Shapley / Houston Chronicle )Jon Shapley, Staff / Houston ChronicleShow MoreShow Less 2of3 Patterson-UTI APEX-XK 1500 oil rig drill. Tuesday, May 9, 2017, near College Station. ( Marie D. De Jesus / Houston Chronicle )Marie D. De Jesus, Staff / Houston ChronicleShow MoreShow Less 3of3 San Antonio-based Pioneer Energy Services is a contract driller and provides a number of well and production services.Courtesy / CourtesyShow MoreShow Less