摘要
通过定性与定量相结合、区域研究、综合研究的方法,研究了渭河盆地地热形成的地热地质条件,探索控制地热资源分布的控制因素。研究表明渭河盆地地热地质条件优越:具有多个热源,包括地幔热源、壳源放射性热源以及生物质降解作用生热;具有多个水源,包括大气降水以及冰川水成因的沉积原生水;隔热层发育,巨厚泥岩发育的张家坡组是地热保存的重要区域隔热层,蓝田-灞河组、高陵群等地热储层内发育的不等厚直接隔热层对地热的保存具有重要作用。沉积相和断层是盆地内地热资源分布的关键因素,沉积相控制了西安凹陷和固市凹陷地热资源赋集条件差异较大,断层是沟通深层与浅层地热传导提供了通道。
The formation condition of geothermal geological has been researched in Weihe basin, and the control factors of geothermal resources distribution has been explored by the combination of qualitative and quantitative, regional research, and comprehensive research methods. The research indicate that the geothermal geological conditions of Weihe basin is superior. Firstly, Weihe basin provides a plurality of heat source, including mantle source, crust source and biomass degradation by radioactive source. Secondly, it has abundant water, including atmospheric precipitation and sed- imentary water of glacial origin. Thirdly, thermal insulation layer developed, and that thick mud- stone is an important preservation insulation for geothermal in Zhangjiapo Group. Different thickness of insulating layer in Lantian-Gaoling Group Bahe Group is playing an important role in the preservation of geothermal reservoir. In addition, the sedimentary facies and the fault are key factors about distribution of geothermal resources in the basin. The sedimentary facies control geothermal resources, which lead to diverse geothermal resource condition between Xi＇ an Depression and Gushi Depression, and the fault is another channel which can communicate inside the earth heat source with shallow geothermal reservoir.
作者
李正
张阳
李萌瑶
贾海平
LI Zheng ZHANG Yang(Shaanxi Gas Group Co. ,LTD, LI Meng-yao, JIA Hai-ping Xi＇ an 710016, Shaanxi, China)
出处
《承德石油高等专科学校学报》
CAS
2016年第6期5-9,共5页
Journal of Chengde Petroleum College
关键词
渭河盆地
地热地质
控制因素
热源
沉积相
断层
Weihe basin
geothermal
control factors
heat source
sedimentary facies
fault
