关中地区地热分布控制因素与地热开发前景

Geothermal distribution control factors and geothermal prospect in Guanzhong region

地热开发布井是地热勘探研究的重点和难点,其布井位置受地热分布控制因素的影响。关中地区地热主要分布在渭河盆地,盆地内具有大量的断裂构造,加之莫霍面埋深浅,岩石圈厚度薄,具有形成地热田的深部热背景。结合区域地质资料,在前人研究结果的基础上,结合目前地热田的勘探和开发状况,分析认为断裂控制渭河盆地的生长,且影响新生代以来沉积中心的位置。新生代厚层沉积砂岩成为研究区优质热储层发育的物质基础,热异常主要受断裂带控制。地热取热方式目前正朝着取热不取水方向迈进,伴随绿色能源的发展,关中地区地热有非常可观的前景。

Arrangement well is the focus and difficulty of geothermal exploration research and its well location is affected by the geothermal distribution control factor.Geothermal in Guanzhong region is mainly distributed in the Weihe Basin.There have a large number of fault structures,with shallow Moho burial depth and thin lithosphere, Weihe Basin has a deep thermal background.Based on the previous research results,this paper combined with exploration and development of the geothermal field,and concluded that the fault controlled the growth of the Weihe River Basin and affected the location of the sedimentary center since the Cenozoic.Thick sedimentary sandstone of Mesozoic has become the material basis for the development of highquality thermal reservoirs.Thermal anomalies are mainly controlled by fault zones.Geothermal heating mode is currently moving in the direction of taking the heat does not take water,with the development of green energy,Guanzhong geothermal region has a very considerable prospects.