Gotco International

Mattco Manufacturing is an oil and gas field equipment and machinery manufacturing company located in Houston, Texas. Founded in 1947, the company is one of the leading manufacturers of fluid end modules for all makes and models of mud pumps used for oil and gas drilling rigs worldwide. Its list of products includes a wide variety of triplex-fluid ends, duplex-fluid ends, pulsation dampeners and discharge-strainer crosses. Mattco Manufacturing also provides a host of repair services, including sandblasting, magnetic-particle inspection, welding, stress relieving and custom /standard machining services.

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.

Nabors Drilling USA is one of the largest drilling contractors in the United States, with a total fleet of nearly 400 land rigs. Nabors has achieved this position through a continuous program of investment and strategic acquisition, which began more than 10 years ago. The company is a subsidiary of Nabors Industries, which owns and operates nearly 600 land drilling and 970 land workover and well servicing rigs throughout the world. Offshore, Nabors operates more than 40 platforms, 17 jack-ups and three barge rigs in the domestic and international markets. It also markets 30 marine transportation and support vessels, primarily in the Gulf of Mexico. Nabors Drilling USA has a location in Houston.