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192 companies

EOSYS

Location not listedUpdated Dec 2002

EOSYS is an independent geosciences company based in France, specializing in carbon sequestration, natural hydrogen resource exploration, and sustainable territorial development strategies.

Earth Science Associates, Inc.

Location not listedUpdated Dec 2002

Earth Science Associates, Inc. is a software development and consulting company specializing in geographic information systems and data analytics for the oil and gas industry, particularly focused on the Gulf of Mexico.

EcoMonitor Publishing

Location not listedUpdated Dec 2002

EcoMonitor Publishing provides comprehensive information and resources on the environmental impact of the offshore oil and gas industry, including publications by Dr. Stanislav Patin on oil spills and marine environmental effects.

El Paso Energy

Location not listedUpdated Dec 2002

Verdun Oil Company is a privately held oil and gas company based in Houston, Texas, focused on acquiring, developing, and producing assets in the Eagle Ford shale and Austin Chalk trends in South Texas.

El Paso Marine Co. (Corporate Headquarters)

Houston,, TX, United StatesUpdated Mar 2004

El Paso Corporation (NYSE: EP) is committed to meeting energy needs throughout the United States and the world, with operations that span the energy value chain from wellhead to the trading floor.

EnCana Corporation (Head Office)

Calgary, Alberta, CanadaUpdated May 2005

EnCana Corporation, in Calgary, Alberta, Canada, with an enterprise value of approximately $30 billion(Cdn), is the largest North American based independent oil & gas company, driven to be the best -in-class benchmark in production cost, per share growth and value creation.

Energy Africa Ltd

Cape Town,, South AfricaUpdated May 2006

Energy Africa Ltd is an energy company based in Cape Town, South Africa, specializing in oil and gas exploration and production.

Energy Graphics, Inc.

Houston,, TX, United StatesUpdated Mar 2007

Energy Graphics, Inc. provides high quality oil and gas exploration data management, mapping services, and proprietary software solutions since 1979.

Enterprise Oil

Location not listedUpdated Dec 2002

Enterprise Oil was a British oil company involved in exploration and production of oil and gas.

Ergon

Jackson, Mississippi, United StatesUpdated Jun 2002

Ergon, Inc. is an energy service company that manufactures and markets asphalt, asphalt emulsions, and specialty oils as its primary products. Ergon transports these products and those of other companies through its trucking, rail and marine transportation companies. In addition, Ergon is a manufacturer of industry-leading file servers, and has holding in other technology concerns.

Evergreen Resources, Inc.

Denver,, Colorado, United StatesUpdated Feb 2007

Evergreen Resources, Inc. is a subsidiary of Pioneer Natural Resources Company engaged in the exploration, development, production, operation, and acquisition of unconventional natural gas properties.

Exco Resources

Location not listedUpdated Dec 2002

EXCO Resources, Inc. is an independent oil and natural gas company focused on the exploitation, exploration, acquisition, development, and production of onshore U.S. oil and natural gas properties, primarily in Texas, Louisiana, and the Appalachia region.

Exploration Logistics

Location not listedUpdated Dec 2002

Exploration Logistics provides support services to the oil and gas industry, specializing in logistics and supply chain solutions.

Exploration Technologies, Inc.

Location not listedUpdated Dec 2002

Exploration Technologies, Inc. provides geochemical services for petroleum exploration and environmental site assessments, specializing in mapping light hydrocarbons to identify petroleum reservoirs and contamination.

Fred.Olsen Energy ASA

Oslo,, NorwayUpdated Mar 2008

Fred. Olsen Energy ASA is a Norwegian company listed on the Oslo Stock Exchange providing offshore oil and gas exploration and production services with over 35 years of experience in offshore drilling.

Freeport Sulphur Company

Port Sulphur, LA, United StatesUpdated Feb 2003

Freeport Sulphur Company, now part of Freeport-McMoRan, historically engaged in sulphur mining and oil and gas exploration primarily in the Gulf of Mexico and Gulf Coast area.

Fugro Robertson Ltd

Llanrhos, Llandudno,, North Wales,, United KingdomUpdated Aug 2005

Fugro Robertson Ltd specializes in delivering high quality petroleum geoscience data and interpretation, with expertise developed since 1961 in the North Sea and other hydrocarbon provinces.

GEOCON

Axminster, Devon, United KingdomUpdated May 2026

The Geocon Group is one of the world’s leading international earth science consultancies, providing comprehensive management and consultancy services in all aspects of exploration, engineering, information technology and HSE in both Upstream and Downstream development.