National Oilwell Varco is one of the most successful companies in the Energy sector. As of the year 2018, it generated revenues of $7,304 million (0.70% year-over-year change). Reported profit was of ($237.00) million. The current CEO Clay C. Williams (Chairman, President & Chief Executive Officer) currently manages more than 31,605 employees. The company's headquarters is located in Houston, TX. Yes, National Oilwell Varco is a Fortune 1000 company. Its current rank is top 388 US company. It has been on the list for 13 years.