Ensign Energy Services Inc., together with its subsidiaries, provides oilfield services in Canada, the United States, and internationally. The company offers shallow, intermediate, and deep well drilling, as well as specialized drilling services, including horizontal, underbalanced, horizontal re-entry, and slant drilling for steam assisted gravity drainage applications; and coring and oil sands drilling services to the mining, and oil and natural gas industries. It also provides directional drilling and related services for conventional and horizontal drilling applications; shallow to deep well services, such as completions, abandonments, production workovers, and bottom hole pump changes to oil and natural gas producers; and interactive pressure drilling services with self-contained systems comprising nitrogen generation, compression equipment, and surface control systems. In addition, the company rents drill strings, loaders, tanks, pumps, rig matting, blow-out preventers, waste bins, and wastewater treatment equipment for the drilling and completions segments of the oilfield industry; and wireline and production testing services to the oil and natural gas industry. Further, it offers transportation services. As of December 31, 2017, the company owned and operated a fleet of 201 land drilling rigs, 27 specialty rigs, and 110 well servicing rigs. Ensign Energy Services Inc. was founded in 1987 and is headquartered in Calgary, Canada.