   HOME SERVICES CAREERS LOCATIONS Drilling Services International Drilling Services Wireline Services Well Servicing Locations & Contacts Drilling Services Wireline Services Well Servicing Pioneer people are your strategic advantage On October 4, 2021, Patterson-UTI announced that it has closed its previously announced acquisition of Pioneer Energy Services Corp. Please visit www.patenergy.com for more information. Pioneer Energy Services has provided quality oilfield services for over four decades. Rely on Pioneer people to help your drilling and production projects on time and on budget. Drilling Services Independents and major oil and gas E&P companies rely on our contract land drilling services. Wireline Services Highly trained wireline service crews use the latest equipment to help clients achieve maximum lifetime production. Well Servicing Our experience and fleet of the latest equipment combine for high-quality workovers, completions, maintenance and plug and abandonment services. Pioneer Energy Services Corp. © 2009–2021. Home Drilling Wireline Well Servicing PENNEBAKER