American Association of Drilling Engineers (AADE)

American Association of Petroleum Geologists (AAPG)

American Association of Professional Landmen (AAPL)

Association of American State Geologists (AASG)

Association of Energy Service Companies (AESC)

Association of Well Head Equipment Manufacturers (AWHEM)

American Geological Institute (AGI)

Association of Petroleum Industry Engineers and Constructors (APEC)

American Petroleum Institute (API)

Canadian Association of Petroleum Producers (CAPP)

Completion Engineering Association (CEA)

Drilling Engineering Association (DEA)

Domestic Petroleum Council (DPC)

Energy Advocates

Energy Research Clearing House (ERCH)

Geospatial Information & Technology Association (GITA)

Gas Technology Institute (GTI, formerly GRI)

Geotechnology Research Institute (GTRI)

Ground Water Protection Council (GWPC)

International Association of Drilling Contractors (IADC)

International Association of Geophysical Contractors (IAGC)

Interstate Oil and Gas Compact Commission (IOGCC)

Independent Petroleum Association of America (IPAA)

The Industry Technology Facilitator (ITF)

National Association of Royalty Owners (NARO)

National Association of State Energy Officials (NASEO)

Natural Gas Supply Association (NGSA)

National Ocean Industries Association (NOIA)

National Petroleum Council (NPC)

National Stripper Well Association

Production Engineering Association (PEA)

Petroleum Equipment Suppliers Association (PESA)

Petroleum Foundation of America (PFA)

Petroleum Research Atlantic Canada

Petrotechnical Open Software Corporation (POSC)

Petroleum Services Association of Canada (PSAC)

Petroleum Technology Alliance of Canada (PTAC)

Petroleum Technology Transfer Council (PTTC)

Society of Exploration Geophysicists (SEG)

Society of Independent Professional Earth Scientists (SIPES)

Society of Petroleum Engineers (SPE)

Society of Professional Well Log Analysts (SPWLA)