- Advanced Geomechanics
 - Geotechnical engineering consultants providing cost/risk analysis for decision making. - Advanced Geotechnology Inc.
- Offers petroleum engineering, geoscience, and software solutions for exploration, reservoir characterization, drilling, completions, and subsurface waste disposal.
- Alliance Engineering Inc.
- Providing engineering and project services to support energy companies in the safe and efficient development and transmission of oil and gas resources.
- Altra Consultants
- Provider of engineering consultancy to the oil, gas and petrochemical industries.
- Ammonite Resources
- Offers technical and economic evaluation of petroleum and mineral resource investments.
- Anticline Petroleum Consultancy Office
- Antonio Associates
- World wide geotechnical and rock engineering specialist.
- APEX Petroleum Engineering
- Blends practical experience with state-of-the-art technology to optimise production. Offers real-time hydraulic fracturing design and execution.
- ASC Consultants, Inc.
- Specialises in the application and development of advanced technologies for exploration and development of oil and gas worldwide.
- Aztec Engineering
- Drilling contractor focusing on mineral and petroleum exploration, geotechnical testing, and ground water investigation.
- BCCK Engineering, Inc
- International, multi-disciplinary engineering firm that specialises in nitrogen rejection, NGL recovery, and small to mid-sized refineries.
- Bissett Resource Consultants Ltd.
- Petroleum engineering company providing engineering services, technical assistance and support.
- Bunger and Associates, Inc
- R&D company provides crude oil (petroleum) evaluation, refinery technical services, custom analysis, distillation simulations, gasoline blending software and process evaluations.
- Carson Services, Inc/Aerogravity Division
- Acquires, processes, and interprets continuous, simultaneous airborne gravity and magnetic survey data for worldwide hydrocarbon and mineral exploration.
- Cawley, Gillespie & Associates, Inc.
- Serves owners and operators of oil and gas properties.
- Collarini Engineering
- Petroleum reservoir engineers and geoscientists providing reserve reporting, field studies, and acqusistion and divestment work.
- ConGO Online
- Provides assessments and advice about local social situations in regards to business development, particularly for the mineral and energy resource sectors.
- Core Laboratories (1)
- Crutchfield Energy Data
- Oil and gas prices for market intelligence within the petroleum and energy industry. Oil and gas prices are both current and historical to 1975.
- Data Retrieval Corp's
- Pressure-transient testing of gas wells without running tools downhole.
- David T. Snow, Ph.D. and Associates
- Hydrogeologic and geotechnical engineering consulting.
- Dawson Geophysical
- Acquires and processes 3D seismic data used in analyzing subsurface geologic conditions for the potential of oil and natural gas accumulation.
- Dolphin a.s
- Provides the offshore industry with rig management, well services, subsea contracting, and engineering.
- Domain Engineering, Inc.
- Services include engineering consulting, process modelling, and optimisation for the oil and gas industry.
- Eadie Oil, Inc.
- We have developed a process technology for partially upgrading heavy oil. The process may also be used for recycling used lubricating oil to #2 diesel.
- Edinburgh Petroleum Services Ltd.
- Specialises in software development and consultancy for the international upstream oil and gas industry.
- Egep Consultores S.A
- Consulting firm specialising in geology and geophysics, hydrocarbons, and management optimisation.
- Elliott's Land Services Ltd
- Providing mineral leasing and computer mapping services to oil and gas exploration companies in southwestern Ontario.
- Energy Capital Group
- Assists clients in selecting suitable oil and gas investments for their portfolio.
- Ensign Geophysics
- Specialist in seismic data processing for oil companies.
- Fekete Associates Inc.
- Well test interpretation, economic evaluations, reservoir engineering, gas gathering system optimisation/deliverability studies, production engineering, suspended well reviews and geological studies.
- Fugro Consulting Engineers
- International engineering, geology, geotechnical, survey, data collection, DGPS, GIS, environment, software, and consulting.
- Gary S. Swindell & Associates
- Oil and gas reserve evaluations and general reservoir engineering studies.
- Geoinzeniring d.o.o.
- Provides soil mechanics, and geophysical and geological engineering services.
- Geological Consulting Services
- Structure maps and digital data. We specialise in the Mesozoic of the entire Gulf Coast Region.
- Geological Data Maps
- Supplies mappable correlated geological well data for petroleum industry, and provides GIS based well location maps with subsurface contour data.
- Geomatrix Consultants, Inc.
- Works in the fields of engineering, applied environmental and earth sciences, air quality and toxicology, and risk assessment.
- GeoSteering LLC
- Provides services and products to companies drilling or logging oil wells.
- Geotech Consultants International, Inc.
- Specialising in geotechnical engineering, project and programme management, and construction inspection services.
- Gilbert Laustsen Jung Associates Ltd
- Independent geological and engineering consulting services to the petroleum industry, including rigorous economic evaluations, technical studies, advice and opinions.
- Golder Associates
- Consulting companies providing services in support of environmental, industrial, health, natural resources, and civil engineering projects.
- Group Delta Consultants
- Small, minority-owned, geotechnical engineering firm in Southern California with offices in Los Angeles, Orange, and San Diego Counties.
- Gustavson Associates, Inc.
- International oil, gas and mineral consulting.
- Halliburton
- Provides and integrates products and services that add value through the entire lifecycle of oil and gas reservoirs.
- Hansen Drilling Consultants
- Consulting services and free software.
- HIW Surveys Ltd.
- Services in the field of land surveying and related disciplines.
- Horizon Energy Partners
- Subsurface consultancy providing services on field development and reservoir management.
- Icon Engineering Pty Ltd
- Offshore engineering and construction company specialising in the oil and gas industry.
- IHRDC
- Training, publishing and consulting firm serving the international energy industries.
- Itasca Consulting Group, Inc.
- International geomechanical engineering consultancy providing solutions for the mining, civil, petroleum, and waste isolation industries.
- J.R. Butler and Company
- Reservoir engineering, exploration geology, well logging and other consulting services to the gas and oil industry.
- James E. Smith & Associates
- Offers engineering services to the oil and gas industry in East Texas and the southwestern United States.
- John M. Campbell and Company
- Specialised in international training, publishing, and consulting for the gas/oil industry.
- John Pepper Consulting
- Petroleum engineering, business management and investment consulting.
- John S. Herold, Inc.
- Specialised independent research and consulting firm focusing exclusively on the petroleum industry.
- Kary Data Consultants Ltd.
- Geophysical services including brokerage and management of seismic and aeromagnetic data, speculative surveys, airborne geophysical data acquisition, processing and interpretation.
- Kelman Seismic Processing
- Seismic processing company with offices in Calgary and Houston. Find technical papers on seismic signal processing and analysis.
- Key Energy Services
- Oil well and lease services, including drilling, workovers, wireline services, transport and trucking, hot oil, and more.
- Koch Engineering Company
- Labarge Companies
- Engineering, construction and maintenance services for the natural gas energy industry.
- Lasser, Inc.
- Oil and gas production data.
- Maverick Engineering, Inc.
- Offers engineering and technical services to the petrochemical and petroleum industries.
- McDowell & Associates
- Offering engineering, consulting, environmental, hydrogeological, and geotechnical services as well as construction testing, drilling, and well installation.
- Micro-strat Inc.
- Consultancy specialising in seismic sequence stratigraphy and exploration geochemistry.
- Milbor-Pita & Associates, Inc.
- Consulting engineering firm specialising in geotechnical and geo-environmental engineering.
- Mohajir & Associates, Inc.
- Specialising in petroleum engineering, geological, and geophysical studies. serving energy and financial firms in the oil and natural gas industry.
- Mustagh Resources Ltd.
- Geophysical consulting company providing serving the oil and gas industry worldwide.
- Noria Corporation
- Provides oil analysis seminars, books, videos, and consulting services.
- Norwegian Geotechnical Engineering
- R&D and consulting in the field of soil and rock mechanics, foundation engineering, snow avalanche research, geoenvironmental engineering and reservoir mechanics.
- Oil & Gas Consultants International
- OGCI specialises in petroleum training, technical publishing, organisational learning consulting, and business management consulting for the oil and gas industry worldwide.
- Oilfield Audit Services, Inc.
- Provides full scope rig audit and BOP inspection services.
- Oilfield Management, Inc.
- Oil business management consulting, due diligence and advice.
- OPE Inc.
- Provides engineering and construction services to the offshore oil and gas industry.
- Outtrim Szabo Associates Ltd
- Services including preparation for annual reports & filings, oil & gas property determinations, geological and geophysical services and fair market value opinions. Horizontal well expertise.
- PENCOR Group of Companies
- Reservoir fluid analysis (PVT), subsurface sampling, well testing equipment, mobile laboratories, early production, production enhancement
- Petro Log, Inc.
- Mudlogging & engineering services for the oil industry.
- Petroconsultants
- Provider of information services, data,and analysis to the international upstream oil and gas industry.
- PetroDynamics, Inc.
- Interpretation of oil and gas prospects or efficient production of reservoirs.
- Petroglyphx Geoscience
- An independent commercial organisation of geoscientists and business consultants, operating internationally to service the geoscience sector of the oil industry.
- Phillips' Fuels Technology
- Provider of technologies and services that help refiners and manufacturers reach clean fuel objectives.
- Pinnacle Oilfield Services, Inc.
- Drill pipe cleaning, offshore bottom hole assembly inspection, and drill collar and heavyweight inspection.
- Professional Service Industries, Inc.
- Provides pollution and hazardous materials management, geotechnical engineering, and construction testing services.
- Project Consulting Services, Inc.
- Offers services in marine construction projects, offshore platform installation and drilled pipeline crossing.
- PTS Labs International
- Performs petrophysical and environmental core analysis, wellsite handling, CT scanning, NMR analysis, petrography and digital photography.
- Rock Solid Images
- Characterize changes in petroleum reservoirs using volume seismic attributes classified by core and log data.
- Rocky Mountain Oilfield Testing Center
- Field testing of petroleum and environmental technologies, tools, and processes.
- Russian Petroleum Consultants Corp.
- Offers petroleum reservoir management, integrated reservoir studies, field operations, and software consulting services.
- Schlumberger
- Global oilfield and information services company with major activity in the energy industry.
- Scotia Group Inc., The
- Provides domestic and international oil and gas advisory services including evaluations, simulations, acquisitions, divestments and research.
- Seismic Exchange, Inc. (SEI)
- A full service 2D and 3D seismic data marketing firm.
- SolTech Engineering
- Engineering design partner of a Calgary integrated energy services group, focused on oil and gas pipelines/facilities, and energy efficiency technologies.
- Sound Energy Group
- Geoscience and engineering consulting group dedicated to the cost-efficient discovery and production of hydrocarbon reservoirs.
- Steffen Robertson and Kirsten
- Stewart Brothers Drilling Co
- Services include mud-rotary exploration in the mineral exploration field, and air-rotary casing hammer and hollow stem auger drilling in the environmental field.
- Stolt Offshore
- Contractor to the international offshore oil and gas industry, specialising in engineering, construction, and maintenance services.
- Stratagraph, Inc.
- Providing mudlogging and geopressure detection services to the petroleum industry.
- Subsurface Engineering
- Geophysical well logging services for hydrology, mining, engineering, and geology.
- Technip-Coflexip
- Providing engineering and construction services for oil and gas, petrochemical, and other industries including life sciences, chemicals, agro-industries, metals, and power generation.
- Terracon Consultants, Inc.
- Multi-disciplinary firm specialising in geotechnical, civil, environmental and materials engineering and testing.
- TFCW Consultants
- Serves the oil and gas industry.
- Titan SNC-Lavalin
- Engineering, procurement, and construction management company serving the oil and gas industry.
- Tobosa Exploration, Inc.
- Oil and gas consulting including property appraisals, lease operating services, due diligence reviews and other engineering and geological services.
- Tracer Technologies International - Cleveland, OH
- Oilfield and process tracing and radiological services company.
- Treadwell & Rollo
- Specialising in geotechnical, environmental, and earthquake engineering and the applied earth sciences.
- Trinidad Inspection Services Ltd.
- Provides non-destructive testing services for the oilfield and petrochemical industries.
- Ventech Companies
- Provides engineering, procurement, construction and start-up services to the refining, gas processing, and petrochemical industries.
- Welenco, Inc.
- Well service, video surveys, geophysical logging, well repair and perforation cleaning on water, monitoring, mining and oil wells.
- Well Flow Dynamics AS
- Wellspring Partners
- Advisory, marketing, and engineering consulting firm specialising in representing sellers of oil and gas-producing properties.
- West Texas Research Group, LLC (WTRG)
- Provides data, analysis and strategic planning for the energy industry. One of our current projects is the determination of the actual wellhead price of crude oil.
- Westport Technology Center International - Houston, TX
- Willbros Group, Inc.
- Independent contractors serving the oil and gas industry, providing construction, engineering, and speciality services worldwide.
- Woodside Research Ltd.
- Specialising in the Canadian oil and gas industry, creators of the CANOIL database.
- Xytel Corporation - The Pilot Plant Company
- Provides complete turn-key services for modular pilot plants and small commercial process units.
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