National Oilwell Varco is one of the leading providers of quality oilfield products and services for the worldwide oil and gas industry and has been dedicated to this sector for more than 140 years. National Oilwell Varco is the single source for a variety of rig equipment, including integrated systems, downhole tools, and supply chain solutions. From a spare part to a comprehensive drilling system and from a generic valve to a fully integrated supply chain process, National Oilwell Varco delivers customer solutions. The company is constantly developing and acquiring new technologies and services to better serve future customer requirements, National Oilwell Varco continues to be the premier source for diversified products and services worldwide. National Oilwell Varco has a broad range of equipment, systems and components for land rigs and semi-submersible rigs worldwide. Merrill A. Miller Jr. has been the chief executive officer of National Oilwell Varco for more than five years. He has been with the oil and natural gas products company for over 10 years. Miller attended the United States Military Academy, and earned a MBA from Harvard.