GCA is an international advisory firm focused on the provision of integrated technical and managerial services and independent advice to all sectors of the oil and gas industry. Gaffney, Cline & Associates provides technical, operational, management, and commercial consulting services to the global oil and gas industry. Gaffney, Cline & Associates Ltd. portfolio includes reservoir appraisal, advice about field development, and refining and marketing, as well as integrated technical and management services. Gaffney, Cline & Associates Ltd. also provides independent certifications of oil and gas reserves and expert witness services or arbitration services for projects that involve legal, technical, or contractual disputes. Gaffney, Cline & Associates Ltd. has offices throughout the world, and clients include global oil and gas companies, national oil companies, governments, and private investors. Executives Peter Gaffney and Ben Cline founded the firm in 1962.

Dolphin was founded in 1965 under the name A/S Aker Drilling and was acquired by Fred.Olsen in 1976. Dolphin is one of the pioneers in the Norwegian oil industry. Since Dolphin A/S was established in 1965 Dolphin A/S has acquired a broad and deep experience in the operation of drilling units on the Norwegian Continental Shelf. Dolphin A/S, a subsidiary of Fred.Olsen Energy, provides snubbing, hydraulic workover, and offshore drilling services to oil and gas exploration and production customers operating in the North Sea and off the coasts of Brazil and Trinidad. Dolphin, together with sister company Dolphin Drilling operates a fleet of eight semi-submersible drilling rigs, one deepwater drill ship, and a semisubmersible accommodation unit. Dolphin A/S customers have included Shell, Phillips Petroleum UK, and Smedvig.

Noble Corporation was founded in 1921 and is based in Sugar Land, Texas. Noble Corporation may be heir to a fortune as demand increases for deepwater oil and gas contract drilling services. Noble Corporation, with operations in waters off the coasts of five continents, has a fleet of 63 offshore drilling units: three submersibles, four dynamically positioned drillships, 13 semisubmersibles, and 43 jack-up rigs. Many of its rigs are capable of operating in depths greater than 5,000 feet. About 85% of the Noble Corporation drilling fleet is deployed in international markets, primarily in the Middle East, India, Mexico, the North Sea, Brazil, and West Africa. Noble (which is domiciled in Switzerland) also provides labor contract drilling, well site, and project management services.

Abu Dhabi National Oil Company (ADNOC) spreads its wings over the United Arab Emirates (UAE), accounting for 94% of its 97.8 billion barrels of proved oil reserves, the fourth-largest national reserves in the world behind Saudi Arabia, Iraq, and Kuwait. Abu Dhabi National Oil Company also has proved reserves of 6.1 trillion cu. ft. of natural gas. Abu Dhabi National Oil Company oversees oil production of more than 2.7 million barrels a day. The ADNOC group includes exploration and production companies, support companies, maritime crude oil transport companies, and a refined-product distribution company that operates more than 200 UAE service stations.

Wintershall is a wholly owned subsidiary of BASF, which is based in Ludwigshafen, and specializes in energy. Wintershall is active in various regions of the world in the exploration and production of crude oil and natural gas. In Europe the BASF subsidiary trades and sells natural gas. Wintershall Holding AG also markets storage capacities for oil and gas, transportation capacities for gas as well as optic fiber capacities. Wintershall has been active in the exploration and production of oil and gas for more than 75 years, and with its headquarters in Kassel, Wintershall Holding AG is now Germany’s largest producer of crude oil and natural gas. In its exploration and production activities, Wintershall deliberately focuses on selected core regions where the company possesses a wealth of regional and technological expertise. These regions include Europe, North Africa, South America as well as Russia and the Caspian Sea region. In addition, these operations are complemented by the Wintershall Holding AG growing exploration activities in the Arabian Gulf.

EPCOR Utilities Inc. builds, owns and operates electrical transmission and distribution networks, water and wastewater treatment facilities and infrastructure in Canada. EPCOR is one of only 10 companies to be selected as Canada's Most Earth-Friendly Employers. EPCOR is headquartered in Edmonton, Alberta. At its core, EPCOR Utilities is an integrated energy provider. Its Energy Services division, which accounts for most of the company's sales, procures and markets electricity and natural gas for retail and wholesale customers and related products and servicess. EPCOR Utilities operates the regulated electricity and water distribution utilities in the Edmonton, Alberta, region, and it has interests in regulated and nonregulated power generation facilities in Canada and the US. The company also has energy infrastructure construction operations. The City of Edmonton owns EPCOR Utilities.

C-Tech Oilwell Technologies Inc. is an innovative oil field technology development, sales and services company dedicated to developing coiled rod technology, products and bringing them to the market. C-Tech has been owned by Dover Corporation (NYSE: DOV) since June 2005. C-Tech operates under the Energy Products Group of the Fluid Management market segment of Dover. Through subsidiaries C-Tech provides customers with oil and gas field equipment and services. C-Tech Oilwell Technologies Inc. Pro-Rod subsidiary manufactures coiled rods, rod handling systems, and tubing. Its C-Tech Design and Manufacturing unit makes coiled tubing units and fabricates steel products, including shipping saddles, oil field boilers, and drilling rig modules. C-Tech also provides rig rebuilding, fabrication, and engineering services. Dover Corporation acquired C-Tech in 2005.

Lufkin Industries, Inc. and its subsidiaries manufacture and sell oil field pumping units and power transmission products. Lufkin Industries, Inc. operates through two segments, Oil Field and Power Transmission. The Oil Field segment manufactures and services artificial lift products, including artificial reciprocating rod lift equipment and related products. Lufkin Industries, Inc. also transports and repairs pumping units; and refurbishes used pumping units. In addition, this segment designs, manufactures, installs, and services computer control equipment and analytical services for artificial lift equipment, as well as operates an iron foundry to produce castings for new pumping units. Further, the Oil Field segment provides gas lift, plunger lift, and completion equipment. The Power Transmission segment designs, manufactures, and services speed increasing and reducing gearboxes for industrial applications. Lufkin Industries, Inc. also manufactures capital spares for customers in conjunction with the production of new gearboxes, as well as produces parts for after-market service. Lufkin Industries, Inc. operates in the United States, Europe, Canada, Latin America, the Middle East, and North Africa. Lufkin Industries was founded in 1902 and is based in Lufkin, Texas.

XTO Energy was founded in 1986 and is headquartered in Fort Worth, Texas. XTO Energy Inc., together with its subsidiaries, engages in the acquisition, development, exploitation, and exploration of producing oil and gas properties in the United States. XTO Energy Inc. also engages in the production, processing, marketing, and transportation of oil and natural gas. The company's properties are concentrated in Texas, Arkansas, Montana, Louisiana, Oklahoma, New Mexico, Utah, Kansas, West Virginia, Colorado, Wyoming, Pennsylvania, and North Dakota. As of December 31, 2008, XTO Energy Inc. had estimated proved reserves of 11.80 trillion cubic feet of natural gas, 76 million barrels of natural gas liquids, and 268 million barrels of oil; and owned interests in 18,235.7 net producing wells. XTO Energy markets its gas to brokers, local distribution companies, and end-users. XTO Energy Inc. was formerly known as Cross Timbers Oil Company and changed its name to XTO Energy Inc. in June 2001.

Crystal Flash Energy, one of Michigan's largest energy-related products suppliers, delivers heating oil, propane, and other energy options to its 45,000 rural customers. Crystal Flash Energy's fleet of 125 trucks deliver propane and heating oil to thousands of homes, and gasoline and diesel fuel to trucking companies, construction firms, and farms. Crystal Flash Energy manage fuel supplies for homes, businesses and farms. Crystal Flash Energy also provide a number of environmental services and products to business. On the alternative energy side, it operates and sells electricity generated by wind-powered turbines. Crystal Flash Energy recycles used motor oil, oil filters, and antifreeze.

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