山东临清地热田地热地质特征

Geological Characteristics of Geotherm in Linqing Geothermal Fields in Shandong Province

摘要:

山东省临清地热田主体位于冠县凹陷内,面积约1550km2。地热类型属层状孔隙型,热源是地球内部的传导热,盖层是第四系和新近纪明化镇组。可被利用的热储层有4个,最有开发利用价值的是馆陶组下段热储,该热储层顶板埋深约1100m,底板埋深约1700m,热储层厚度530~580m,含水层累积厚度158~175m,单井涌水量1500~2000m3/d,出口水温62~67℃,矿化度5000mg/L左右,具腐蚀性,结垢性弱,具较好的开发利用价值。经计算馆陶组热储层单井1a的可采量为5.431×105m3,100a可采量所释放的总热量为1.156×1013kJ,合理井距为1500m。

Abstract:

Main body of Linqing geothermal field in Shandong province locates in Guanxian depression with the square of about 1550km 2. Its geothermal type belongs to stratified pore type; its heat source is the conductive heat come from the inside of the earth, and the cover is Minghua formation in Quaternary and Neogene. 4 geothermal reservoirs can be used, and the reservoir at the lower part of Guantao formation has the highest exploration value. The burial depth of its roof is about 1100m, while its bottom is abou...