National Oilwell Varco, Inc. is headquartered in Houston, Texas. The company operates in the energy sector, providing equipment and services primarily for the oil and gas drilling industry. The Houston location is significant as it serves as a hub for numerous oil and gas companies and related services. This strategic position allows National Oilwell Varco to facilitate its operations, research, and development efforts, as well as to foster relationships with clients in the energy sector. If you are interested in more details about their headquarters or other locations, you might consider looking on their current web page for further information.