Pioneer Energy Services is operating a modern fleet of top-performing drilling rigs throughout onshore oil and gas production. The company provides land contract drilling services and production services to independent and major oil and gas exploration and production companies. Pioneers production services are supported by 100 well-servicing rigs, more than 100 cased-hole, open-hole and offshore wireline units, and a range of advanced coiled tubing units. Pioneer Energy Services was established in 1968 and is headquartered in San Antonio, Texas, United States.