President situation and progress in the study of helium gas resources in China

Based on collecting and analyzing the research results of China's helium resources, the authors have summarized the development and study of China's helium resources, and pointed out the research directions in the future. The helium's research history can be divided into four stages:cognitive stage, applied stage, basic research stage and extraction technique research stage. The distribution of helium gas in China has the characteristics of "small basins with full gas, large and medium basins with partial gas". The strata hosting helium gas are Ordovician, Permian, Paleocene and Neocene strata. Composition characteristics show that the content of helium in nature gas is generally less than 1%, and only partial samples in Weihe Basin have high content that can reach 4.942%. Helium isotope analysis shows that the helium is mainly derived from crustal source with the addition of crust-mantle mixing source. The authors have reached the conclusion that the crustal helium gas and mantle helium gas are respectively affected by helium gas source rocks and deep fractures. It is suggested that more importance should be attached to crustal helium gas and that different methods should be adopted according to the different geneses.