Willbros Group, Inc. provides engineering, procurement, and construction services to the oil and gas, refinery, petrochemical, and power industries primarily in the United States, Canada, and Oman. Willbros Group, Inc. operates through two segments: Upstream Oil and Gas, and Downstream Oil and Gas. The Upstream Oil and Gas segment provides engineering, procurement, and construction (EPC) services to design, build, or replace large-diameter cross-country pipelines; fabricate engineered structures, process modules, and facilities; and build oil and gas production facilities, pump stations, flow stations, gas compressor stations, gas processing facilities, gathering lines, and related facilities. The Downstream Oil and Gas segment provides specialty construction, turnaround, repair, and maintenance services to the downstream energy infrastructure market, which primarily consists of oil companies, independent refineries, product terminals, and petrochemical companies; and to EPC firms, independent power producers, government entities, specialty process facilities, and ammonia and fertilizer manufacturing plants and facilities. Willbros Group, Inc. was founded in 1908 and is headquartered in Houston, Texas.

J-W Operating Company designs, manufactures, and distributes oilfield equipment and provides oilfield services used to expedite the production of oil and natural gas wells. Through subsidiaries Cohort Energy, Excell Services, J-W Gathering, J-W Measurement, J-W Power, and J-W Wireline, J-W Operating Company provides gas gathering and processing, gas compression and measurement, oil and gas exploration, and drilling and production services across the US. J-W Operating Company is an Energy Development and Energy Services company that specializes in natural gas compression, gathering, exploration and production, well servicing and gas measurement. J-W Operating Company various businesses operate in the states of Texas, Louisiana, Oklahoma, Arkansas, New Mexico, Kansas, Colorado, Utah, Wyoming, California, Montana, Kentucky, West Virginia, Ohio, Pennsylvania and North Dakota. J-W Operating is owned by the family of CEO Howard G. Westerman, Jr.

Nippon Mining Holdings is involved in mining and energy operations. Subsidiary Japan Energy is engaged in both upstream and downstream oil and gas activities as well as petrochemical manufacturing. The company refines oil at its three refineries and markets its petroleum products through a network of 3,300 JOMO service stations throughout Japan. Petroleum products include gasoline, naphtha, kerosene, petrochemicals, lubricants, and liquefied petroleum gas (LPG). Subsidiary Nippon Mining & Metals is engaged in resources development activities such as smelting and refining, recycling and environmental services, metal fabrication, and the manufacture of electronic materials.

Precision Drilling Trust, through its subsidiaries, provides contract drilling, and completion and production services to the oil and gas exploration and production companies in Canada, the United States, and internationally. The contract drilling services include land drilling, and camp and catering services, as well as consist of the procurement and distribution of oilfield supplies, and manufacture and refurbishment of drilling and service rig equipment. The completion and production services include service rig well completion and workover services, trucking services, snubbing services, and wastewater treatment services, as well as comprise the rental of oilfield surface equipment, tubulars and well control equipment, and wellsite accommodations. As of December 31, 2008, Precision Drilling Trust had 220 land drilling rigs, 229 well completion and workover service rigs, 29 snubbing units, and approximately 12,000 rental items in Canada. Precision Drilling Trust had 151 land drilling rigs in the United States, 2 rigs in Mexico, and 1 in Chile. Precision Drilling Trust was founded in 1951 and is headquartered in Calgary, Canada.

Paramount Petroleum Corporation is a major manufacturer and producer of paving and roofing asphalt products for the paving and roofing industry. The heart of our company is our 54,000 BPD refinery located in Paramount, California and our 35,000 BPD in Long Beach, CA. Our refineries are capable of processing approximately 89,000 barrels per day. We process crude oil into a variety of products including specialized road and roofing asphalts, diesel fuel, jet fuel, heating oil, and gasoline components. The process involves heating the crude oil under controlled conditions until it separates into fractions that meet certain specifications. Many of these fractions are sent on to other refineries for further processing. Except for asphalt products, almost all of our products are shipped through pipelines to terminals and other refineries in Southern California. In addition to asphalt products, the refinery produces transportation fuels such as jet fuel, diesel fuel and gasoline.

Newpark Mats & Integrated Services, LLC, a subsidiary of Newpark Resources, makes mat systems used to create temporary roads and walkways on wet, soft, and environmentally sensitive areas around drilling and construction sites. Newpark Mats & Integrated Services, LLC also provides pipeline construction services. Newpark Mats & Integrated Services' pipeline crews test soils, lay mats, dig trenches, install pipe, and restore disturbed areas to pristine condition. Newpark Mats & Integrated Services, LLC also provides environmental remediation services, pit design, and well connection and maintenance.

Sonatrach seeks to stay on track as one of the world's top energy players. State-owned Sonatrach oversees Algeria's oil and gas exploration, production, and marketing activities. In addition to its exploration, refining, and pipeline operations, the company also invests in electrical power and in desalination projects. The company also has exploration and production activities in other countries, including Libya, Mali, Niger, and Peru. Sonatrach has proved reserves globally of 225 million tons of oil equivalent, and operates a gas station network of more than 1,950 outlets.

Trinidad Drilling provides modern, reliable, expertly designed oil and gas drilling equipment operated by well-trained personnel. Trinidad Drilling Ltd. drilling fleet is one of the most adaptable, technologically advanced and competitive in the industry. Trinidad Drilling Ltd. provides contract drilling and workover services to a range of oil and gas companies. Trinidad Drilling operates a combined fleet of more than 160 drilling, well servicing, and preset/coring and barge rigs that have the capacity to drill to depths between 1,000 and 6,500 meters. Trinidad Drilling Ltd. has pursued a strategy of growing its operations through the acquisition of a number of smaller drilling companies and the construction of new drilling rigs. Trinidad Drilling Ltd. has operations in Canada, Mexico, and the US.

CNOOC Limited was founded in 1982 and is headquartered in Central, Hong Kong.CNOOC Limited, together with its subsidiaries, engages in the exploration, development, production, and sale of crude oil, natural gas, and other petroleum products in offshore China. The company's oil and gas properties are located in offshore China, which include Bohai Bay, western south China Sea, eastern south China Sea, and east China Sea, as well as in Indonesia, Australia, and Africa. As of December 31, 2008, it had net proved reserves of 2.6 billion barrels of oil equivalent.CNOOC Limited operates as a subsidiary of China National Offshore Oil Corporation.

Schlumberger Limited and its subsidiaries supply technology, integrated project management, and information solutions to the oil and gas industry worldwide. Schlumberger Limited operates in two segments, Oilfield Services and WesternGeco. The Oilfield Services segment provides a range of exploration and production services required during the life of an oil and gas reservoir. Schlumberger Limited offers Wireline technologies comprising open-hole and cased-hole services; directional-drilling, measurement-while-drilling, and logging-while-drilling services; exploration and production pressure and flow-rate measurement services at the surface and downhole; services used during oil and gas well drilling and completion; and services used to maintain optimal production throughout the life of a well. Schlumberger Limited also provides well completion services and equipment; artificial lift; data and consulting services; and information solutions, including consulting, software, information management, and IT infrastructure services that support oil and gas industry operational processes. The WesternGeco segment provides reservoir imaging, monitoring, and development services, as well as operates data processing centers, and multiclient seismic library. Schlumberger Limited services range from 3D and time-lapse (4D) seismic surveys to multi-component surveys for delineating prospects and reservoir management. Schlumberger Limited has a joint venture agreement with National Oilwell Varco, Incorporated to provide high speed drill string telemetry systems. Schlumberger Limited was founded in 1927 and is based in Houston, Texas.

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