Schlumberger

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.

TETRA Technologies is a geographically diversified oil and gas services firm. The company provides niche products and services focused on well completion, compression-based production enhancement and decommissioning. It produces, markets and distributes calcium chloride and brominated products for the energy industry. TETRA Technologies capabilities include production testing, rig services, wellhead compression and well abandonment. The company serves multinational exploration and production organizations, large independents and small producers. It operates on five continents. TETRA Technologies primary subsidiary, Maritech Resources, evaluates mature oil and gas properties to determine economic benefits and future decommissioning liabilities. The company was established in 1982 and is headquartered in The Woodlands, Texas.

Baker Hughes serves the worldwide oil and natural gas industry with reservoir consulting and products and services for drilling, formation evaluation, completion and production. It is a leading provider of high-performance technology that creates value from oil and gas reservoirs. Baker Hughes operates in over 90 countries serving independent, international and national oil companies. Its service network is organized into 23 geomarkets operating in 9 regions and 2 hemispheres. Region and geomarket management teams work to understand customer needs and coordinate delivery of individual products and comprehensive service solutions that include the right Baker Hughes technologies for the project. Its Reservoir Technology and Consulting Group includes three consulting firms - Gaffney, Cline & Associates, GeoMechanics International and Helix RDS - that provide technical and commercial consulting, with unique capabilities in reservoir engineering, geomechanics and subsurface engineering.