OFS Inernational LLC

Founded in 1919, Halliburton Company is one of the world's largest providers of products and services to the oil and gas industries. The company adds value through the entire lifecycle of oil and gas reservoirs. It provides and integrates products and services, starting with exploration and development, moving through production, operations, maintenance, conversion and refining, to infrastructure and abandonment. Halliburton employs more than 100,000 people in over 120 countries working in five major operating groups. These segments offer a broad array of products and services to upstream oil and gas customers worldwide, ranging from the manufacturing of drill bits and other downhole and completion tools to pressure pumping services. David J. Lesar has been the chief executive officer of Halliburton for more than six of the 13 years he has been with the company. Lesar earned a bachelor s and MBA from the University of Wisconsin Madison. Halliburton Company has locations throughout the world, including its headquarters 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.

Master Rig International is a company that serves the oilfield industry. The company offers a range of drilling equipment. It provides on-site consulting and inspection services. Master Rig International offers packaging, refurbishment and various technical services. The company also specializes in rig-up sourcing and assembling. Master Rig International maintains a location in Houston.