Challenger Geophysical Ltd
- Provides engineering & environmental geophysical data acquisition, processing and interpretation.
- http://challenger-geophysical.com

Geophysical Resources & Services Pty Ltd
- Provides survey design, acquisition, and project management to the minerals and coal industries.
- http://www.consultgrs.com.au/

New England Geophysical
- Offers non-invasive subsurface investigations using ground penetrating radar, electromagnetic and radiological methods.
- http://www.newenglandgeophysical.com/

SPC Geoken
- Service company engaged in acquisition of geological, geophysical and engineering surveys.
- http://www.geoken.com/eindex.php

Surveyaudit.com
- A seismic survey audit firm specializing in survey and mapping computations for the exploration industry. Operating out of Calgary, Alberta, Canada.
- http://surveyaudit.com/

Bighorn Land and Field Service Ltd.
- An Alberta based company offering preliminary seismic services to the oil and gas industry.
- http://www.bighornland.com/

Wavefield Inseis AS
- A Norwegian marine geophysical company that provides proprietary data acquisition services and offers a portfolio of non-exclusive multi-client data.
- http://www.wavefield-inseis.com/

VSFusion
- VSP processing services and borehole seismic application design, data processing, interpretation, and integration.
- http://www.vsfusion.com/

Velseis Pty Ltd.
- An Australian seismic exploration company providing a range of seismic technologies and contracting services for coal, mineral and hydrocarbon exploration.
- http://www.velseis.com.au/

Vector Seismic Data Processing, Inc.
- Seismic data processing and research and development of software for solving complex 2D/3D seismic images.
- http://www.vector-seismic.com/

Tricon Geophysics, Inc.
- Provides 3D and 2D seismic processing services including 3D pre-stack migration and depth imaging.
- http://www.tricongeophysics.com/

TGS-NOPEC Geophysical Company L.P.
- Licenses seismic data and maintains collections of 2D and 3D multi-client data along with a database of digital well logs.
- http://www.tgsnopec.com/

TGC Industries, Inc.
- Provides project management for acquisition of 3D seismic data and maintains a database of gravity and magnetic data for the U.S. and North America.
- http://www.tgcseismic.com/

Sevmorneftegeofizika (SMNG)
- Marine geophysical contractor in Russia, offers 2D/3D marine seismic acquisition, navigation positioning, processing and integrated interpretation of seismic data.
- http://www.smnggeophysics.com/

Seitel
- Data library of land and marine surveys available for license. Includes an online GIS viewer for registered users to download detailed information.
- http://www.seitel-inc.com/

Seismic Exchange, Inc. (SEI)
- 2D and 3D seismic data marketing with proprietary databases in the Gulf of Mexico, domestic onshore and transition zone.
- http://www.seismicexchange.com/

Seis Pros International
- Seismic contracting for survey design, acquisition and processing. Includes a company history and portfolio of past projects.
- http://www.seispros.com/

Seabird Exploration Norway AS
- Provider of 2D, source and shallow water 2D/3D seismic services.
- http://www.sbexp.com/

SeaBed Geophysical AS
- Specializing in marine multi-component seismic acquisition, and processing of marine streamer and ocean bottom seismic data.
- http://www.seabed.no/

Roxicon AS
- Specializes in 2D and 3D seismic merging of data sets and seismic velocity data.
- http://www.geogrids.no/

Precision Geophysical, Inc.
- Offers operating field crews and equipment for acquisition of seismic data.
- http://www.precisiongeophysical.com/

Polaris Explorer Ltd.
- Conducts 2D and 3D seismic recording in extreme conditions, from sources that include dynamite, vibroseis, marine airguns and explorer accelerated weight drop system.
- http://www.polarisexplorer.com/

Paulsson Geophysical Services, Inc.
- Provides data acquisition, processing and interpretation services in the field of advanced 3D borehole seismology and massive 3D VSP. Includes hardware specifications and survey design parameters.
- http://www.paulsson.com/

Multiwave Geophysical Company
- Provider of marine seismic services to the global oil and gas industry with a focus on towed seismic, multiclient seismic services, and ocean bottom seismic as well as other geophysical sub-sea operations.
- http://www.multiwave.no/

Mammoth Geophysical, Inc.
- Remote sensing services using radiometric, geochemical, and Earth resistivity profiling surveys. Includes technical explanations and success stories.
- http://www.mammoth-geo.com/

Kelman Technologies Inc.
- Digital seismic data processing, archiving and data management services.
- http://www.kelman.com/

JEBCO Seismic L.P.
- Provides a library of spec data and non-exclusive surveys, including land 3D, transition zone, ocean bottom cable, and regional 2D and 3D marine programmes.
- http://www.jebcoseis.com/

Hardin International Processing, Inc.
- Geophysical processing center for seismic data. Includes a description of software and hardware technology and a company profile.
- http://www.hardinintl.com/

Global Geophysical Services
- Specializes in acquiring high density, reservoir grade 3D data sets and provides land and marine seismic acquisition solutions on a proprietary contract or speculative basis.
- http://www.globalgeophysical.com/

GeoStrata Resources Inc.
- Operates geophysical acquisition crews capable of recording dynamite, vibroseis, truck or heliportable operations with both 3D or 2D parameters.
- http://www.geostrata.ca/

Geophysical Service Incorporated
- Crew operations, data management, equipment leasing, acquisition and processing of speculative land and marine 2D and 3D data.
- http://www.geophysicalservice.com/

Geophysical Development Corporation
- Seismic data processing and exploration services including time and depth imaging, AVO and petrophysical analysis.
- http://www.geodev.com/

Geofizyka Toruń
- 3D and multicomponent seismic surveys in Eastern Europe. Onshore acquisition, processing and interpretation services, well logging and downhole seismic surveys.
- http://www.geofizyka.torun.pl/

Gardline Marine Sciences
- 2D/3D high resolution data acquisition and interpretation, shallow gas hazard analysis, seabed mapping, shallow to deep water soil investigation, near shore and coastal surveys and hydrometrics activities.
- http://www.gardline.co.uk/marine_sciences.asp

Flamingo Seismic Solutions
- Offers interpretive processing that provides detailed reservoir characterization using advanced AVO, spectral decomposition and seismic texture analysis.
- http://www.flamingoseismic.com/

DMNG Sakhalin Geophysical Company
- Research vessels for the acquisition of geophysical data, including gravitational prospecting, magnetometric prospecting and seismic survey 2D/3D.
- http://www.dmng.ru/

Canesis Data
- Offers data conditioning and restoration services, including seismic vectorizing and log and map digitizing.
- http://www.canesis.net/

Bird Seismic Services
- Acquisition of streamer and transition zone seismic reflection and refraction for environmental, ground water surveys and shallow gas.
- http://www.birdseismic.com/

BGP, Inc.
- Acquisition and processing of shallow water and transition zone seismic surveys.
- http://www.bgp.com.cn/

Australian Seismic Brokers
- Maintains and licenses a seismic database library for the Asia Pacific region. Also has current spec data acquisition projects and reprocessing capabilities.
- http://www.asb.com.au/

Arcis
- Seismic data processing, participation surveys, geotechnical services, marketing and data management, and 2D and 3D seismic data libraries for the Western Canadian Sedimentary Basin.
- http://www.arciscorp.com/

Applied Geophysical Services
- Velocity modeling and prestack depth migration using proprietary algorithms for seismic data processing.
- http://www.appliedgeo.com/

Terraquest Ltd
- Specializes in airborne geophysical surveys, geophysical consulting, data interpretation, enhancement and modeling.
- http://www.terraquest.ca/

Sander Geophysics Limited
- Specializes in high resolution airborne magnetic, gravimetric and radiometric surveys using fixed-wing aircraft and helicopters.
- http://www.sgl.com/

Offshore Hydrocarbon Mapping (OHM)
- Provider of controlled source electromagnetic imaging (CSEMI) services, including surveying, data processing, and data interpretation services.
- http://www.ohmsurveys.com/

ElectroMagnetic GeoServices
- Uses seabed-logging, an application of marine controlled source electromagnetic (CSEM) that has the ability to map the subsurface resistivity remotely from the seafloor.
- http://www.emgs.no/

Electro-Seise, LP
- Airborne micro-gravity surveys using a tuned frequency measurement, deriving the residual gravity anomalies, with proprietary spatial filtering and data collection techniques.
- http://www.electro-seise.com/

AGO
- Acquisition and processing of marine controlled-source electromagnetic (CSEM) and marine magnetotelluric (MMT) services for use in offshore exploration activities.
- http://www.agoem.com/

AOA Geophysics Inc.
- Survey design, data acquisition and processing, mapping and interpretation, geoscience consulting as applied to energy exploration and development engineering, and geotechnical and construction engineering projects.
- http://www.aoageophysics.com/

Ultramag Geophysics Pty. Ltd
- Manufacture, sales and rentals, and magnetometer survey services. Includes information about the earth's magnetic field and case studies.
- http://www.ultramag.com/

Pinemont Technologies Inc.
- Electro-telluric sweep receiver data acquisition and navigation systems for environmental measurements and geophysical exploration.
- http://www.pinemontgroup.com/

Blackhawk
- Geophysical imaging and emerging technologies to address a variety of applications and engineering problems related to transportation, infrastructure, environmental, mining, tunneling, unexploded ordnance, and oil and gas exploration.
- http://www.blackhawkgeo.com/

OYO Corporation.
- Installation and maintenance of accelerographs and earthquake monitoring equipment, and consulting services on earthquake damage mitigation.
- http://www.oyo.co.jp/

Micro-g Lacoste
- Gravity and borehole gravimeter surveys, instrument repair and calibration services, training workshops.
- http://www.lacosteromberg.com/

Geophex
- Ground survey company conducting gravity, magnetic, electrical, electromagnetic, seismic reflection and refraction, and ground-probing radar surveys with a focus on environmental projects.
- http://www.geophex.com/

Zonge Engineering and Research Organization, Inc.
- Equipment manufacturing and field services of electrical and electromagnetic methods for subsurface imaging applied to hydrological, hydrocarbon, environmental, engineering, and unexploded ordnance.
- http://www.zonge.com/

SJ Geophysics Ltd.
- Ground geophysical surveys for the mineral exploration, environmental and engineering industries, including induced polarization and resistivity, electromagnetic, gravity, magnetic, radiometric, and ground penetrating radar.
- http://www.sjgeophysics.com/

Scott Geophysics Ltd.
- Specializes in induced polarization resistivity surveys. Other methods such as magnetometer and VLF-EM are also available. Additional processing and interpretation are offered, including inversion of IP and resistivity data.
- http://www.scottgeophysics.ca/

Naeva Geophysics, Inc
- Subsurface detection using magnetics, electromagnetics, ground penetrating radar, UXO detection, seismic refraction and reflection, utility location, self potential, resistivity, and borehole logging.
- http://www.naevageophysics.com/

Quantec Geoscience
- Provides geophysical services to the mining industry with a focus on data acquisition, interpretation and survey execution.
- http://www.quantecgeoscience.com/

Geophysics GPR International
- Airborne geophysics for mineral exploration, buried object detection, concrete structure evaluation, and environmental and contamination studies.
- http://www.geophysiquegpr.com/

Geosystem
- Controlled-source electromagnetic and magnetotelluric (MT) data acquisition, processing and interpretation, 2D/3D prestack time and depth imaging.
- http://www.geosystem.net/

Geodatos
- Services in geophysical exploration covering the acquisition, processing and interpretation stages for the minerals, water resources and petroleum industries in Chile and South America.
- http://www.geodatos.cl/web/english/index.html

Excel Geophysics Inc.
- Provies gravity and magnetics field surveys, data processing, interpretation and equipment rentals.
- http://www.excelgeophysics.com/

Enviro-Tech Surveys Ltd.
- Designs and executes 2-D and 3-D seismic surveys using state-of-the-art GPS technologies for digital mapping products.
- http://www.etsurvey.com/

Elliott Geophysics International
- Manufactures a specialized line of geophysical equipment for airborne geophysical surveys, and provides project management and consulting for survey acquisition and processing.
- http://www.geofisik.com/

Crone Geophysics and Exploration Ltd.
- Time domain electromagnetics equipment design and survey acquisition. Includes case histories and technical papers.
- http://www.cronegeophysics.com/

Austin Exploration Inc.
- Acquisition of marine and land gravity and magnetics surveys. Includes a description of non-exclusive surveys available, new technology systems, and data services.
- http://www.austinex.com/

Abitibi Geophysics
- Based in Quebec, offering a wide range of ground geophysical survey types for mineral exploration, particularly precious metals and diamonds.
- http://www.ageophysics.com/

Lisle Gravity Inc.
- Data broker offering sales and licensing of spec and proprietary gravity, aeromagnetic, and magnetotelluric surveys throughout the US. Includes an interactive map showing coverage.
- http://www.gravitydata.com/

Spectral Geophysics
- Contract surveys, processing and interpretation of ground geophysical Data, airborne magnetic, EM and radio-metric data.
- http://www.spectralgeophysics.com/

Paterson, Grant and Watson Limited
- Specialists in the management, processing and interpretation of airborne and ground geophysical surveys. Also offers a variety of non-exclusive international datasets.
- http://www.pgw.on.ca/

GEDCO
- Services in 3D and 2D seismic design, processing and interpretation as well as potential field services, such as high resolution aeromagnetic and gravity.
- http://www.gedco.com/

UTS Geophysics
- Ultra-high resolution airborne geophysical surveys, offering advanced data acquisition and processing of airborne magnetics single sensor and gradient, radiometrics, gravimetry and electromagnetics.
- http://www.uts.com.au/

New-Sense Geophysics Limited
- Offering magnetic, radiometric and time domain electromagnetic airborne surveys to the mining and petroleum industries.
- http://www.new-sense.com/

Mcphar Geosurveys Ltd
- Provider of airborne geophysical surveys and measurements of gravity, magnetic and electromagnetic forces and gamma radiation on the ground and from fixed-wing aircraft and helicopters.
- http://www.mgssurveys.com/

Carson Aerogravity
- High resolution aerogravity and magnetic surveying. Turnkey survey data processing and interpretation. Includes a description of acquisition methods and equipment.
- http://www.aerogravity.com/

Aeroquest International Limited
- Providing services to the mining and oil and gas industries, offers both frequency-domain and time-domain helicopter electromagnetic systems as well as conventional fixed wing Mag/Grav and radiometric surveys.
- http://www.aeroquestsurveys.com/english/index.php

New England Research
- Scientists and engineers pursuing the understanding and applications of rock properties to geological problems.
- http://www.ner.com/

Information Services
- Publisher of the Oil & Gas Directory and the Geophysical Directory. Includes a description of content, sample pages, and ordering information.
- http://www.informationservices.com/

Force Balanced Physics
- Details of a new earth in-situ mechanical systems relationship between mass, 3-D loads and stresses, pore fluid pressure, strain and rock physical properties. Also includes information on text book and services offered.
- http://www.force-balanced.net/

The Online Geoscience Dictionary
- The Online Geoscience Dictionary allows all registered users to access and update over 20000 Geoscience definitions. In addition Geoscientist users can trace old colleagues and have a technical discussion online.
- http://www.geodictionary.com/

Earth Resource Management Services
- Provides geostatistics consulting to reduce risk, manage uncertainty for earth resource exploitation and supply.
- http://www.erms.fr/

Actidyn Systemes
- Form offering simulation of physical phenomena using vibration, universal testing machines, balancing machines, centrifuges and earthquake simulators.
- http://www.actidyn.com/

Engineering Seismology Group Canada
- Specializes in passive monitoring of induced microseismicity, designs and manufactures a diverse range of products.
- http://www.esg-solutions.com/index.htm

Earthquake Detector
- The Quake Alarm provides early warning of earthquakes by detecting the compression wave (the P wave) which precedes the actual shear wave of an earthquake.
- http://www.quakealarm.com/

Geoseismic
- Supplier of earthquake monitoring systems: Hardware and Software designed to track earthquakes.
- http://www.geoseismic.com/

MicroGeophysics Corporation
- Geophysical contract company. Site includes publications, work sites and a client list.
- http://www.microgeo.com/

Land Tech
- Geophysical services and rental of geophysical equipment. Specializes in passive seismic tomography surveys for the oil industry and in pipeline early warning pollution systems.
- http://www.landtech.org/

Geoenergy
- Providing solutions for seismic data compression, processing, and data management in the oil and gas industry.
- http://www.geoenergycorp.com/

Rock Solid Images
- Solutions for seismic reservoir characterization, seismic attributes and rock physics.
- http://www.rocksolidimages.com/