National Oilwell Varco, Inc. is a provider of equipment and components used in oil and gas drilling and production operations, oilfield services, and supply chain integration services to the upstream oil and gas industry. The Company conducts operations in over 1,235 locations across six continents. The Company operates through three segments: Rig Technology, Petroleum Services & Supplies, and Distribution & Transmission. Its Rig Technology segment designs, manufactures, sells and services complete systems for the drilling, completion, and servicing of oil and gas wells. Its Petroleum Services & Supplies segment provides a variety of consumable goods and services used to drill, complete, remediate and workover oil and gas wells and service drill pipe, tubing, casing, flowlines and other oilfield tubular goods. Its Distribution & Transmission segment provides maintenance, repair and operating supplies (MRO) and spare parts to drill site and production locations worldwide.