Industrial Serices Networld (ISN) - online community for the delivery of real world solutions, resources and services within the petrochemical industries.

TotalFinaElf Belgium - offers refining and marketing for chemicals and oil.

Woodhill Engineering Consultants - specialising in multi-discipline design and operations work, including safety, environmental and cost estimation

Petroleum Revenue Services - contract compliance firm specializing in the oil and gas industry

Ortloff Engineers - specializes in cryogenic gas liquids recovery, sulfur recovery, and sour gas processing plant design.

Global Energy Associates - provides consultancy, training, and associated technical services to emerging and established gas markets, as well as individual commercial companies and public organizations.

Tobosa Exploration, Inc. - oil and gas consulting including property appraisals, lease operating services, due diligence reviews and other engineering and geological services.

Randall and Dewey - provider of transaction and related services to the upstream oil and gas industry

Strickland Group - provides petroleum reservoir engineering consulting services for the oil and gas industry and legal community worldwide.

Mentors, The - an oil and gas consulting firm that specializes in developing and marketing geological reports, and in training and mentoring services

Excalibur-Gemini - offers GIS mapping, records and information management, geophysical survey audit, and database management to the oil and gas industry.

Rike Service, Inc. - consulting and management services for the petroleum industry

United Oil & Gas Consulting Ltd. - independent petroleum consultancy specializing in reservoir engineering and geology, as well as economic evaluation.

Overload Services, Inc. - specializing in software training and consulting the petrochemical industry

Refinery Automation Institute, LLC - consulting services include: blending; oil movements and storage; tankage optimization; automation master plans; and training

Ridge & Associates, Inc - Ridge and Associates, Inc. Consulting Engineers, a full service engineering company, which specializes in Petroleum and Flammable Liquid Handling and Loading and Airport Fueling Facilities

Endeco International - consulting services include refinery management, operations, maintenance and engineering, and planning.

Goddard & Associates Inc. - offers services in key areas including engineering, geology, geophysics, commercial development, and technical training to companies who are seeking to participate or are actively engaged in ventures inside Venezuela.

Crostek Corp - specializes in pipeline consulting.

EnSys Energy and Systems - consulting services focusing on petroleum refining, economics, technology, investment, regulatory, fuels and market analyses, LP optimization, energy modeling, and software including the WORLD modeling system

Stellar Energy Advisors Limited - acquisition, divestment, and strategic advisors to international oil and gas companies.

Sure Flow Consulting Services - offers drilling, wellsite, pipeline, abandonment, and other oil and gas industry services worldwide.

Pace Project Services - offers the Performance Forum, a data analysis and benchmarking forum for the upstream oil and gas industry.

Robert R. Austin, Inc. - provides international business development, marketing, sales, and management services

Kemp Group, The - sales and marketing consulting firm to the oilfield service industry