Engineering design of oil and gas facilities, procurement, construction, operation and maintenance, well engineering. Located in Oman.

Offshore property management in the Gulf of Mexico.

IT and telecommunications consultants specialising in the oil and gas industry, offshore development and remote office locations.

Engineering, procurement, construction and management services for western Canada.

An electronic tax service for federal and state tax reporting.

Dubai-based company providing onshore facilities, logistical support, and engineering to Persian Gulf area and south Asia.

Geoscience consultancy group providing services to the international oil and gas industry specializing in integrated reservoir studies and consultancy. Based in the Netherlands.

Worldwide company which provides offshore and onshore contract drilling and drilling-related services. (NYSE: PKD)

Expertise in hydraulics, pneumatics and instrumentation. Engineer and supply gas and oil systems on a "turn-key" basis. Spare parts for Petrogas brand systems.

Operational accounting, land administration and production accounting outsourcing services.

Petroleum training offering practical short courses focusing on application and hands-on utility. Includes course descriptions, instructors and online registration.

Indonesian company providing complete project services including engineering, project management, construction, and procurement of supplies.

Manufacturer of oil drilling auxiliaries in China, offering a diverse range of well drilling, well cementing, and oil extraction chemicals. Also produces glycine.

Global oilfield and information services company with a major focus on energy

Worldwide logistical support and management.