Lindsayca USA

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.

STI offers a range of surveying services. The company s divisions include new product development, geomatics, and repair and maintenance divisions. Its geomatics division offers a wide range of services to the pipeline industry that includes line-location indentification, pig tracking, geographical information system data packaging, high accuracy marker positioning and engineering consulting. The company also provides inertial navigation and hazard geographical information surveys. Additionally, it provides conventional line of sight surveys utilizing Leica total station equipment. STI also provides in-house information processing services by utilizing its proprietary software and other software packages. STI, established in 1994, has its corporate headquarters in Katy, Texas.

Weatherford International is one of the world s largest diversified upstream oilfield service companies. With a corporate history that began in 1941, Weatherford has nearly $4.6 billion in annual revenues, approximately 24,500 employees in nearly 100 countries and more than 85 manufacturing facilities supporting 730 service bases. In 2005, Standard & Poor s announced the addition of the company to its flagship S&P Index. Following the completion of its 2005 acquisition of Precision Drilling Corporation's energy services and international drilling divisions, Weatherford was reorganized into four distinct businesses that include completion and production systems; evaluation, drilling and intervention; pipeline and specialty services; and international contract drilling. The company provides a variety of services to its customers that include drilling, evaluation, completion, production, intervention and industrial services. Weatherford International has locations throughout the United States, such as the office in Houston.