Acorn Petroleum Services
- Expertise and experience in reservoir simulation and optimization of field development.
- http://www.acorn-ps.com/

Orlando Mendoza
- Resume and CV, MsC in reservoir geoscience and engineering, 2006.
- http://www.orlandomendoza.com/

Reservoir Laboratories A.S.
- Provides equipment, laboratory facilities and consulting services for reservoir fluid flow and petrophysical modeling, enhanced oil recovery screening, and field development planning.
- http://www.reslab.com/

C&C Reservoirs
- Maintains a database of reservoir studies and digital field analogs. Includes an online demo for subscribers and a description of workflow and methodology.
- http://www.ccreservoirs.com/

GeoVisual
- Developer of geological modelling, well log correlation, 3D visualisation software for the oil exploration industry. UK.
- http://www.geovisual.com/

Knowledge Reservoir
- Reservoir studies and surface transportation systems analysis. Information management expertise integrates consultant's work with client's staff and data resources.
- http://www.knowledge-reservoir.com/

Caledonia CTC
- Engineering consultants for reservoir development, well planning, processing technology, safety and reliability. Training, especially well control and completion.
- http://www.caledoniactc.co.uk/

Consulting Reservoir Engineering
- Dr. Littmann consults on reservoir engineering, underground gas storage, enhanced oil recovery, and software development.
- http://www.cre-net.de

Gleason Engineering
- Evaluation and appraisal of oil and gas reserves from producing and non-producing oil properties.
- http://www.gleason-engr.com/

Blackwatch Petroleum Services Limited
- International reservoir engineering, petrophysics, asset evaluation, well operations, well testing, and well engineering. Russia, Middle East,Europe.
- http://www.blackwatch.co.uk/

Netherland, Sewell and Associates, Inc.
- Field studies, oil and gas reserve certifications, economic evaluations, and operations management. Integrated geology, geophysics, petrophysics and engineering.
- http://www.netherlandsewell.com/

Object Reservoir
- Dynamic reservoir characterization integrates early well production data with seismic reservoir models to predict reservoir performance. Texas based.
- http://www.objectreservoir.com/

Serafim Ltd.
- A consultancy and software company specialising in using mathematics to solve problems in oilfield development optimisation, reservoir engineering and other areas.
- http://www.serafimltd.com/

Tobosa Exploration, Inc.
- Property appraisals, reserve analysis, geological evaluations, due diligence reviews, seismic interpretation, prospect screening, field supervision, lease operations, and expert testimony.
- http://www.tobosa-exploration.com/

Welltest Specialists
- Advanced well testing analysis, quality control, operational audits, technical audits and other reservoir engineering work for clients in North America, Australia and New Zealand.
- http://www.welltestspecialists.com/

Ralph E. Davis Associates, Inc.
- Reservoir engineering and geological services to the petroleum industry.
- http://www.ralphedavis.com

Field Development Consultants
- Provides geology, geophysics, reservoir engineering, production engineering, and drilling engineering consulting services.
- http://www.fielddevelopment.com/

Argonauta Energy LLC
- Worldwide reservoir, geological and facility consulting services. Specializing in deepwater asset evaluation and development planning.
- http://www.argonenergy.com/

Epic Consulting Services Ltd.
- Worldwide reservoir engineering and characterization. Both finite difference and streamline simulation.
- http://www.epiccs.com/

Straus Engineering Ltd.
- Tactical management of production, reservoir studies, regulatory applications. Based in Alberta, Canada.
- http://straus.ca/

Ireservoir.com
- Services include characterization, modeling, simulation, evaluation and management of reservoirs by combining geological, geophysical and petrophysical analysis.
- http://www.ireservoir.com/

Roxar
- Offers integrated field development and reservoir management solutions. Reservoir modeling and simulation software and services. Downhole flow measurement and reservoir monitoring systems.
- http://www.roxar.com/

Calvin Resources Incorporated
- Performs field studies, reservoir characterization, due diligence and exploration evaluations. Involved in exploration in East Texas Salt Basin.
- http://www.calvinresources.com/

Resource Development Partners
- Team of geoscientists and engineers manage exploitation programs. Based in Sugar Land, Texas.
- http://resourcedevelopmentpartners.com/

Equipoise Solutions Ltd
- Services include geological studies, seismic interpretation, modeling overburden velocity and the use of seismic attributes in reservoir property mapping. Based in Croydon, UK.
- http://www.equipoise.co.uk/

Core Laboratories
- Provides petroleum reservoir description data and production management field services for recovery optimization. A manufacturer of reservoir rock and fluid analysis instrumentation.
- http://www.corelab.com/

J. R. Butler and Co.
- Reservoir appraisal, field development planning and exploration projects. Based in Houston, Texas.
- http://www.jrbutler.com/

Subsurface Computer Modeling, Inc.
- Reservoir studies, including engineering, geology and geophysics. Offices in Texas and UK.
- http://www.scminc.com/

Gemini Solutions Inc.
- Provides engineering services and software for evaluation, development and management of oil and gas reservoirs. Based in Houston, Texas.
- http://www.geminisi.com/

Gary S. Swindell and Associates
- Services include oil and gas consulting, reservoir engineering and reserve studies. Offers oil industry data, coalbed methane and Texas secondary recovery database. Located in Dallas, Texas.
- http://gswindell.com/

J L Wilson and Associates, Inc.
- Integrated petroleum reservoir evaluations for enhanced oil recovery. Generate and evaluate petroleum prospects.
- http://www.jlwilsoninc.com/

International Reservoir Technologies, Inc.
- Worldwide petroleum reservoir management consulting services, including fully integrated reservoir studies. Based in Lakewood, Colorado.
- http://www.irt-inc.com/

TICORA Geosciences, Inc.
- Specializing in GIP resource/reserve analysis, petrophysical/volumetric interpretation, and expert desorption/sorption isotherm testing. Located in Arvada, Colorado. Now also serving Canada.
- http://www.gti-ticora.com/

Platt, Sparks and Associates Consulting Petroleum Engineers, Inc.
- Reservoir appraisal, field development planning, litigation. Austin and Midland, Texas.
- http://www.plattsparks.com/

Valenti Engineering Services, Inc.
- Reservoir appraisal, field development planning. Based in Houston, Texas.
- http://www.valenti-engineering.com/

Eosys
- Provides 3D reservoir geology appraisal and modelling services including prospect appraisal, reserve estimates, field development schemes and well or seismic surveys positioning. Based in France.
- http://www.eosys.fr/

William M. Cobb and Associates, Inc.
- Reservoir appraisal and management, field development planning, training, litigation and exploration projects. Based in Dallas, Texas.
- http://www.wmcobb.com/

Sproule Associates Limited
- Reservoir appraisal, field development planning, training and exploration projects. Corporate headquarters in Calgary, Canada. Offices in Houston and Denver.
- http://www.sproule.com/

PetroStudies Consultants Inc.
- Reservoir appraisal, field development planning, software development. Located in Calgary, Canada.
- http://www.petrostudies.com/

PanTerra Geoconsultants B.V.
- Geoscience consultancy group providing services to the international oil and gas industry specializing in integrated reservoir studies and consultancy. Based in the Netherlands.
- http://www.panterra.nl/

James E. Smith and Associates, Inc.
- Reservoir appraisal, field development planning. Based in Tyler, Texas.
- http://www.jes-engineer.com/

Garb Grubbs Harris and Associates, Inc.
- Provides international reservoir appraisal and field development planning services. Based in Dallas, Texas.
- http://www.forgarb.com/

DeGolyer and MacNaughton
- Offers international reservoir appraisal, field development planning services. Based in Dallas, Texas.
- http://www.demac.com/

Computer Modelling Group Ltd.
- Sells and provides support for reservoir simulation software worldwide. Offices in North and South America, Europe and China.
- http://www.cmgroup.com/

Cawley, Gillespie and Associates, Inc.
- Provides petroleum engineering services such as reservoir appraisal, field development planning and litigation. Located in Fort Worth and Houston Texas.
- http://www.cgaus.com/

Gaffney, Cline and Associates
- Services include international reservoir appraisal, field development planning and exploration projects. Principal offices in UK, USA and Singapore.
- http://www.gaffney-cline.com/

Miller and Lents, Ltd.
- International reservoir appraisal, field development planning and exploration projects. Based in Houston, Texas.
- http://www.millerandlents.com/

TDL International, Inc.
- Petrophysical consultant. Based in Forney, Texas.
- http://www.tdlinternational.com/

ResTech Inc.
- Reservoir appraisal, field development planning and exploration projects. Located in Houston, Texas.
- http://www.restechinc.com/

Ryder Scott Company Petroleum Consultants
- Reservoir appraisal, field development planning and exploration projects. Offices in Houston and Calgary.
- http://www.ryderscott.com/