Ensign United States Drilling is one of the leading drilling contractors serving the Rocky Mountain and California regions. Ensign is a division of Ensign Resource Service Group. The company provides equipment and services for the drilling of oil and gas wells. The land-based drilling contractor serves the Rocky Mountain region of the United States, which contains a number of oil and natural gas basins. Ensign has been providing various oilfield services. It is affiliated to the International Association of Drilling Contractors, California Independent Petroleum Association, and Western States Petroleum Association. The company s managers, supervisors and employees undergo regular training programs to improve its service and production. Ensign United States Drilling is located in Bakersfield, Calif.