ProFrac Holding Corp., a vertically integrated and energy services company, provides hydraulic fracturing, completion, and other products and services to upstream oil and gas companies engaged in the exploration and production of North American unconventional oil and natural gas resources.

Archrock, Inc., together with its subsidiaries, operates as an energy infrastructure company in the United States. It operates in two segments, Contract Operations and Aftermarket Services.

Bristow Group Inc. provides aviation services to integrated, national, and independent offshore energy companies in the United States. It also offers commercial search and rescue services; and other helicopter and fixed wing transportation services.

ProPetro Holding Corp., an oilfield services company, provides hydraulic fracturing and other related services. The company operates through Pressure Pumping and All Other segments.

RPC, Inc., through its subsidiaries, provides a range of oilfield services and equipment for the oil and gas companies involved in the exploration, production, and development of oil and gas properties.

Smart Sand, Inc., an integrated frac sand supply and services company, engages in the excavation, processing, and sale of sands or proppant for use in hydraulic fracturing operations in the oil and gas industry in the United States.

MRC Global Inc., through its subsidiaries, distributes pipes, valves, fittings, and other infrastructure products and services to the energy, industrial, and gas utility end-markets in the United States, Canada, and internationally.