Abstract:
Helium is a very important strategic resource. As our helium gas external dependency has been more than 95%, the contradiction between the supply and demand of helium resources is very prominent. Thus the related helium resource evaluation needs to be carried out as soon as possible. In this paper, the authors summarized the present situation of helium gas exploration and the helium resources in the Sichuan basin and its surrounding areas. As the Sichuan Basin is the first region to realize the commercial utilization of helium gas in China. The helium-bearing natural gas is widely distributed in Sichuan Basin and its surrounding areas horizontal and vertically. The highly radioactive shale formation, basement granite, and uranium rock are developed, which have the common basis as helium source rock. Finally, the helium gas resource potential in the Sichuan basin and its adjacent areas were analyzed in this paper. And the main problems for helium gas exploration were summarized. Based on the characteristics of helium gas enrichment, the future focus in the study of helium gas was also given. The authors suggested investigating and analyzing the characteristics of helium in conventional gas fields and Paleozoic shale gas reservoirs in and around the Sichuan basin, investigating the distribution characteristics of helium, and comprehensively analyzing the mechanism of helium enrichment by establishing the helium-bearing natural gas features data set, and exploring the genesis and distribution of helium. These works would help to lay a firm foundation for future helium exploration and exploitation.