Douglas E. Swanson

Cliffs Drilling Co. provides drilling, well engineering, and offshore production services. The company also offers management services. It has offices in Texas, Louisiana, and Venezuela. The company is headquartered in Houston, TX.

Varco International, Inc. was a provider of engineered drilling and well servicing equipment, products and services to the world's oil and gas industry. With operations in over 40 countries across six continents, the Company was manufacture and supplies drilling systems and rig instrumentation; performs inspection and internal coating of oilfield tubulars; provides drill cuttings separation and manufactures coiled tubing, wireline and pressure control equipment for land and offshore drilling and well stimulation operations. Varco was also manufactures coiled tubing, provides in-service pipeline inspections, manufactures high-pressure fiberglass and composite tubing and sells and rents advanced in-line inspection equipment to makers of oil country tubular goods. The Company operates in four groups: Drilling Equipment, Tubular Services, Drilling Services and Coiled Tubing and Wireline Products. Varco International is located in Houston, TX.

Flint Energy Services Ltd. provides an integrated upstream and midstream construction and production services to the energy and resource industries. The company operates in four segments: Facility Infrastructure, Production Services, Oilfield Services and Maintenance Services. The Facility Infrastructure segment provides construction management, modular fabrication, field construction services on major oil sands construction projects primarily in Alberta. The Production Services segment focuses on midstream oil and gas field production services, including fabrication, construction and maintenance of production facilities, mid-inch pipelines, production equipment, and mid-sized construction management with the inspection, repair and refurbishing of production tubing, drill pipe, sucker rods, casing, small diameter pipelines and polyethylene pipe and liners. The Oilfield Services segment provides drill rig and service rig moving; fluid handling, pressure and vacuum services, industrial and chemical cleaning; and coiled tubing and flush-by services. The Maintenance Services segment provides oil and gas production and maintenance, construction, logistical oilfield services, asset management and project management services to the North American energy sector. It also provides engineering, construction and technical services for public agencies and private sector companies around the world. The company was founded on April 9, 1998 and is headquartered in Calgary, Canada.

Part of Halliburton Co., Boots & Coots International Well Control, Inc. provides well control and firefighting services. The private company is based in Houston, TX.