| American Association of Petroleum Geologists: International organization with 31,000 members in 115 countries. Site includes member information, trade show schedules, news, and publications. |
| Bienvenidos al Instituto Petroquímico Argentino: Non-profit institution whose objectives include studies and analysis, technological research and training, and promotional services for the petrochemical and chemical industries. |
| Canadian Society of Petroleum Geologists: Site includes member information, convention information, news, and publications. Publishes books, a magazine and a technical journal. Has 3500 members. |
| Petroleum Exploration Association of New Zealand: Promoting the interests of petroleum producers and explorers in New Zealand. includes membership, news, and papers and reports. |
| PGK - Petroleum Geological Circle: Dutch professional society of petroleum geologists and engineers. In English. |
| SCAWeb: The Society of Core Analysts: Promotes the technology of core analysis. Has 600 members. It is a chapter at large of the Society of Professional Well Log Analysts. Based in Dallas, Texas. |
| Society of Petroleum Engineers: Serves professional engineers, scientists, and managers in the exploration and production segments of the worldwide oil and gas industry. |
| Society of Professional Well Log Analysts: Includes member services, well log mnemonics, software directory. Has 2000 members. |
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