Patterson-UTI Energy, Inc., through its subsidiaries, provides onshore contract drilling services to oil and natural gas operators in the United States and Canada. It operates through three segments: Contract Drilling Services, Pressure Pumping Services, and Directional Drilling Services. The Contract Drilling segment markets its contract drilling services primarily in west Texas and southeastern New Mexico, north central and east Texas, northern Louisiana, Colorado, Wyoming, North Dakota, south Texas, western Oklahoma, Pennsylvania, Ohio, West Virginia, and western Canada. As of December 31, 2019, this segment had a drilling fleet of 216 marketable land-based drilling rigs. The Pressure Pumping segment offers pressure pumping services that consist of well stimulation and cementing for the completion of new wells and remedial work on existing wells, as well as hydraulic fracturing, cementing, and acid pumping services in Texas, the Mid-Continent, and the Appalachian region. The Directi