Aberdeen Formation Evaluation Society
American Association of Petroleum Geologists
American Association of Professional Landmen
American Petroleum Institute
Association for Women Geoscientists
Association of British Independent Oil Exploration Companies (Brindex)
Association of Exploration Geochemists
Association of International Petroleum Negotiators
Australian Institute of Petroleum (AIP)
Australian Petroleum Production & Exploration Association (APPEA)
Cambridge Energy Research Associates
Centre for Global Energy Studies
Completion Engineering Association
CRINE Network
Drilling Engineering Association (DEA)
Earthworks
Energy Institute
European Association of Geoscientists and Engineers (EAGE)
Expat Network
Geochemical Society
Geological Society of London
Geologists' Association
Geoscience and Remote Sensing Society
Geoscience Information Society
Houston Geological Society
International Association of Drilling Contractors
Institute of Chemical Engineers (IChemE)
Institute of Civil Engineers (ICE)
Institute of Electrical Engineers (IEE)
Institute of Marine Engineering Science and Technology (IMAREST)
Institute of Mechanical Engineers (IMechE)
International Marine Contractors Association
Leading Oil & Gas Industry Competitiveness (LOGIC)
London Petrophysical Society
National Geophysical Data Centre
Norwegian Formation Evaluation Society
Offshore Contractors Association
Oil & Gas Journal
Oil News
Oil Voice
Oil Online.com
Organization of the Petroleum Exporting Countries (OPEC)
Petroleum Exploration Society of Australia (PESA)
Petroleum Exploration Society of Great Britain (PESGB)
Petrotechnical Open Software Corporation (POSC)
Production Engineering Association
Professional Contractors Group
Society of Core Analysts
Society of Exploration Geophysicists
Society of Petroleum Engineers
Society of Professional Well Log Analysts
South East Asia Petroleum Exploration Society
UK Offshore Operators Association (UKOOA)
Well Service Contractors Association
World Oil