Pioneer Energy Services Corp. engages in the provision of land-based drilling services and production services to oil and gas exploration and production companies. It operates through the Drilling, Production and Coiled Tubing Services segments. The Drilling Services segment offers contract land drilling services to exploration production companies through drilling divisions in the U.S. and Colombia. The Production Services segment offers well servicing, wireline, and coiled tubing services. The Coiled Tubing Services segment involve in the use of a continuous flexible metal pipe which is spooled on a large reel and inserted into the wellbore to perform a variety of oil and natural gas well applications, such as wellbore clean-outs, nitrogen jet lifts, through-tubing fishing, formation stimulation utilizing acid, chemical treatments and fracturing. The company was founded in 1968 and is headquartered in San Antonio, TX.