Patterson-UTI Energy, Inc. owns and operates fleets of land-based drilling rigs and a fleet of pressure pumping equipment in the United States. The Company operates in three segments: Contract Drilling; Pressure Pumping, and Oil and Natural Gas. The Company markets its contract drilling services to oil and natural gas operators in the continental United States, and western and northern Canada. The Company's Pressure Pumping segment provides pressure pumping services to oil and natural gas operators in Texas, Southwest Region and the Appalachian region, Northeast Region. The Company's Oil and Natural Gas segment owns and invests in oil and natural gas assets as a non-operating working interest owner. The Company's oil and natural gas working interests are located in producing regions of Texas and New Mexico.