The 17th International Conference on Gas Geochemistry (ICGG-17) was successfully held in Xi'an, Shaanxi from September 11 to 17, 2026. The conference was organized by the Energy Research Institute of Peking University, the Xi'an Geological Survey Center of the China Geological Survey, the China Society of Mineral and Petrology Geochemistry, and co organized by the Department of Geology of Northwest University. More than 220 representatives from Britain, the United States, Canada, Japan, Türkiye, Spain, Russia, Greece and other countries attended the conference.

The International Conference on Gas Geochemistry was founded in 1982 and is a series of academic conferences with significant international influence in the field of gas geochemistry. The theme of this conference is "Gas Geochemistry and Carbon Neutrality under Multi Circle Interactions", with six major topics including volcano earthquake tectonic system gas geochemistry, sedimentary basin hydrocarbon gas geochemistry, multi circle interaction gas geochemistry, CCUS gas geochemistry, helium and natural hydrogen resources, environmental health and experimental analysis techniques, covering traditional directions such as natural gas genesis and reservoir formation, deep fluid activity, rare gas isotope tracing, and highlighting natural hydrogen, helium CCUS、 Emerging research directions include deep carbon cycling, deep-sea gas geochemistry, and extraterrestrial volatile matter detection.

The conference adopted a combination of conference invited reports, special reports, branch reports, and poster displays. The attending experts conducted in-depth discussions on gas sources and genesis identification, deep volatile matter migration, helium gas and natural hydrogen formation mechanisms, CO ₂ geological storage safety monitoring, earthquake and volcanic gas response, and other issues, promoting interdisciplinary integration of geology, geochemistry, energy science, environmental science, and other disciplines. The indoor academic exchange was held from September 12th to 14th. After the meeting, a field geological investigation of helium and oil and gas reservoir systems in the Weihe Basin and the southern edge of the Ordos Basin was organized from September 15th to 17th. Visitors also visited earthquake monitoring stations and geothermal helium oil and gas comprehensive utilization stations. This conference attaches great importance to the cultivation of young scientists and graduate students, and a group of young researchers and graduate students actively participate in academic exchanges through reports, posters, and discussions. Emerging directions such as natural hydrogen, helium resources, deep carbon cycle, CCUS, etc. have attracted widespread attention from young scholars, demonstrating a good talent pool and development potential in the field of gas geochemistry.

During the conference, the International Gas Geochemistry Conference Council held a working meeting to discuss issues such as the publication of conference albums, the recruitment of youth committee members, and the hosting of subsequent conferences. At the closing ceremony, the Greek representative introduced the preliminary ideas for the next conference and issued an invitation to attend.

The successful holding of ICGG-17 systematically showcases the important theoretical understanding and technological progress in the field of international gas geochemistry in recent years, deepens the exchange and cooperation between domestic and foreign peers in natural gas, helium, natural hydrogen, CO ₂, rare gases, and deep fluids, and has positive significance for promoting international cooperation, promoting the growth of young talents, and enhancing China's academic influence in the field of gas geochemistry.