Seventy Seven Energy Inc. was a diversified oilfield services company providing drilling, hydraulic fracturing, and oilfield rental services to land-based exploration and production customers in the United States. It operated through three segments: Drilling (via Nomac Drilling, L.L.C.), Hydraulic Fracturing (via Performance Technologies, L.L.C.), and Oilfield Rentals (via Great Plains Oilfield Rental, L.L.C.).