• American Association of Petroleum Geologists
• American Geological Institute
• American Geophysical Union
• Arizona Geological Society 
• Asia Oceania Geosciences Society
• Association of Environmental & Engineering Geologists 
• Australian Institute of Geoscientists
• British Geological Survey 
• Coast Geological Society
• Environmental and Engineering Geophysical Society 
• European Association of Geoscientists and Engineers 
• Geological Society of America
• Geological Society of Glasgow 
• Geological Society of India
• Geological Society of London 
• Geological Society of Washington 
• Geologists' Association
• Geoscience Australia
• International Union of Geological Sciences 
• Japan Geoscience Union
• Mining, Geological & Metallurgical Institute of India
• Myanmar Geosciences Society
• National Association of State Boards of Geology
• Norwegian Geological Survey 
• Pacific Section American Association of Petroleum Geologists
• Petroleum Exploration Society of Australia
• Royal Geological Society of Cornwall 
• Society of Exploration Geophysicists
• Society for Mining, Metallurgy, and Exploration
• The Society for Organic Petrology

Companies associated with Geology and Earth Science Oilexco Incorporated:

• Penneco Oil Company, Inc. 
• Pioneer Oil and Gas 
• Premier Oil 
• British Gas 
• Eurogas Corporation 
• Cameron
• Colibrys Switzerland
• EMS Energy
• ExproSoft
• Fairmount Marine
• Ocean Maxwell
• Radoil (Reel Power International Subsidiary)
• Saxon Energy Services, Inc.
• SinSco Project Management
• Swanson Industries
• Task Environmental Services Worldwide
• Lamprell Energy Lt
• Dubai Petroleum
• Burley SubSe
• Dragon Oil
• Likpin LLC
• RTE Group
• Specialist Services
• Occidental M E Development Co
• Aeroquest Limited
• AES Marine Consultants, LLC
• Air Quality Services (AQS)
• Alpha Geoscience Pty Ltd
• American Association of Petroleum Geologists (AAPG)