Liberty Oilfield Services Inc is a United States based company which provides hydraulic fracturing services to onshore oil and natural gas Exploration and Production companies. It provides stimulation services to optimize well production, hydraulic fracturing services, and engineering services, such as on-site real-time fracture treatment analysis, fracture model calibration, and production data analysis and reservoir modeling. It provides services primarily in the Permian Basin, the DJ Basin, the Williston Basin and the Powder River Basin. The company's customer base includes a broad range of Exploration and Production companies, including Extraction Oil and Gas, Inc., SM Energy Company, Centennial Resource Development, Inc., Continental Resources, Inc., Anadarko Petroleum Corporation.