PGS Geophysical AS acquires, processes and provides seismic data. It sells seismic data to oil and gas companies that use this information to explore for hydrocarbon accumulations, to develop new oil and gas fields and to manage those fields in production. The company is headquartered in Lysaker, Norway.

Part of Exxon Mobil Corp., Exxonmobil Upstream Research Co. is a company headquartered in Houston, TX, that engages in exploration of oil and gas.

Geotech Ltd. provides airborne geophysical survey mapping, data processing, and data interpretation. The firm offers VTEM, ZTEM, magnetics, radio metrics, GIS services, and data analysis. The company was founded in 1981 and is headquartered in Aurora, Canada.

Bell Geospace, Inc. provides three-dimensional full tensor gradient data to the oil and gas market. It offers Air-FTG data measures a three-dimensional gravity field with each individual component facilitating the identification and mapping of subsurface geological complexity. The company was founded by John J. Brett in 1987 and is headquartered in Houston, TX.

ION Geophysical Corporation is a technology focused company that provides geophysical technology, services and solutions to the global oil and gas industry. The Company offers services and products through four segments: Solutions, Systems, Software and Ocean Bottom Services (OBS). The Company's Solutions segment provides over two service activities: Ventures group and Imaging Services group. The Company's Systems segment's products include Marine Acquisition Systems, Marine Positioning Systems and Geophones. The Company's Software segment provides command and control software systems, related software and services for towed marine streamer, and seabed operations, as well as survey design. The Company, through OceanGeo B.V., offers an integrated OBS solution, which includes expert survey design, planning and optimization, superior data captured using multicomponent acquisition systems available to OceanGeo; data acquisition, and data processing, interpretation and reservoir services.

Halliburton Energy Services, Inc. provides oilfield services. It offers technical products and services for petroleum, natural gas exploration and production. The company is headquartered in Houston, TX.

Part of Northrop Grumman Corp., Western Atlas International, Inc. is a company headquartered in Houston, TX, specializing in search, detection, navig., guidance, aeronautical, and naut. sys.. On January 31, 1994 Litton Industries, Inc. acquired Western Atlas International, Inc. from Dresser Industries, Inc. for $558 million.

CGG Services SA specializes in engineering and technical studies. The company was founded on January 4, 1996 and is headquartered in Massy, France.

Schlumberger Technology BV, a subsidiary of Schlumberger NV, is a Dutch company located in The Hague. The firm provides gas and oil exploration services.

ARKeX Ltd. provides geological information to the oil, gas and mining exploration industries. The company specializes in providing non-seismic solutions. It offers multi-client data service that include non-seismic data library and new multi-client acquisition; gravity gradiometry data acquisition services; interpretation of gravity gradiometry, gravity, and magnetic information; and data processing services. The firm also acquires, processes, and interprets gravity gradiometry data in airborne and marine environments. ARKeX was founded by Katherine Jessie Hall, Phillip Houghton, John M. Lumley and Jeremy White in March 2004 and is headquartered in Cambridge, the United Kingdom.

Soquem, Inc. engages in the exploration and development of mineral resources. It offers a wide range of metals and minerals. The firm provides nonmetallic minerals on the royalty basis. The company was founded by René Lévesque in 1965 and is headquartered in Val-d'Or, Canada.

Advanced Geosciences, Inc. is an American private company that develops and manufactures electrical resistivity and IP imaging hardware and software.

GECO Technologies is a biotechnology company to develop non-biodegradable materials.

Part of Schlumberger NV, Schlumberger Technologies, Inc. is a company headquartered in Moorestown, NJ, that provides oilfield services such as distributing oil and gas information technologies and providing consulting services.

Zonge International engages in geophysical equipment resource and services such as minerals, petroleum, geothermal, dams and groundwater.

GroundMetrics, Inc is the world leader in the development of land-based EM sensing and is working with oil, gas, mining, and geothermal companies to commercialize a new class of sensor system and methods and to provide advanced survey and monitoring services worldwide. GroundMetrics, Inc. spun-out of QUASAR Federal Systems (QFS) in 2010 with an exclusive license to productize QFS’s novel electromagnetic sensor technology for resource exploration, management and production. This technology offers advanced capabilities for electromagnetic (EM), induced polarization (IP) magnetotelluric (MT), and controlled-source EM (CSEM) surveys in arid regions common in Australia, Canada, Mongolia, Mexico, the Middle East, South America and the United States. Furthermore, it improves the precision, safety and economics of Borehole-to-Surface (BSEM) surveys and is ideal for time-lapse and continuous long-term monitoring applications such as reservoir imaging and monitoring for Improved Oil Recovery (IOR) and Enhanced Oil Recovery (EOR). GroundMetrics uses its proprietary sensors, noise mitgation methods and focused-azimuth borehole transmitter technology to provide survey and monitoring services directly to energy and mining companies.

Services Petroliers Schlumberger SA provides engineering services. The company was founded on September 30, 1954 and is headquartered in Paris, France.

WesternGeco provides seismic contracting services. The firm offers reservoir imaging, monitoring and development services to oil & gas companies. The company was incorporated on September 19, 1978 and is headquartered in Gatwick, the United Kingdom.