Geological mapping, GIS, drilling, computer system design, refinery work, GPS. Primarily serving Europe and North Africa.

Consulting engineering expertise to oilfield inventors, technology developers, service companies, producers, and investors. Based in Wyoming, USA.

Provides consulting and expert witness testimony for marine engineering, drilling rig design, drilling rig operations and other associated oil, gas and oilfield operations.

Consulting and laboratory services specializing in analyzing and solving fouling, coking and deposition problems in oil and gas production.

Offers seismic and well data interpretation, geological modeling, reservoir engineering and reserves estimates.

Provides support and advice to clients through all stages of well engineering from drilling-in to remedial stimulation.

Offers advisory services for international companies wishing to supply equipment and materials to oil and gas companies in Brazil.

Project engineering, procurement, construction and management, including cost estimates and feasibility studies, plant commissioning and start-up.

Drilling, production, reservoir, and facilities engineering, as well as environmental engineering and geology.

Independent consultancy providing worldwide business advice, management consulting, executive briefing and energy training. Expertise in gas pipelines, underground storage and liquefied natural gas.

Engineering, environmental, construction management and technical services for the petroleum industry

Based in Aberdeen, provides facilities engineering and project services teams for operability reviews, commissioning and training.

Provides marketing researches, marketing consulting services, reference books, analytical reports on crude oil, petroleum products, natural gas, liquefied petroleum gas markets.

Technical consulting for the improvement of knowledge and data management activities in exploration and production organizations.

Sales and marketing consulting for the oil service industry.