Geothermal fluid properties and reserve calculation in Yishu Basin of Jilin Province
Yishu Basin in Jilin Province has good water-rich strata and rich geothermal resources,indicating good development and utilization prospects.Based on the existing geothermal geological survey and evaluation data of Yishu Basin,the authors in this article combed and analyzed the hydrogeological and geothermal geological con-ditions of the basin,combined with relevant standards,specifications and hydrochemical methods.Besides,the occurrence conditions,hydrochemistiy and isotope composition of geothermal fluids in the basin were also dis-cussed,and the geothermal reserves were estimated using the parameters of thermal storage rock mass.The con-clusion shows that the geothermal fluid in Yishu Basin mainly exists in the compressed water of deep clastic rock fissures and pores,and the formation conditions have high similarity and certain homology,which are low-tem-perature alkaline underground hot water with high total dissolved solids(TDS),fluorine containing,metasilicic acid and chemical type of HCO3--Na+.The composition of hydrogen and oxygen isotopes shows that the supply of underground hot water is mainly ancient precipitation,and the age of the geothermal water is 27 Ka.The geo-thermal fluid storage volume is 4.20 × 1010 m3,and the recoverable volume is 3 446.94 × 104 m3/a.The results of this research could provide scientific basis for the subsequent management,development and utilization of geo-thermal resources in the area.
Yishu Basin of Jilin Provincegeothermal fluidhydrochemical characteristicsgeothermal reserves
万方数据
维普
