Characteristics of Sand Geothermal Reservoir and Fluid Chemical Characteristics of Dongying Formation in Northwestern Shandong Province
Moho surface in the geothermal area of northwestern Shandong is shallowly buried,with high heat flow value and strong water-rich aquifer.It is the area with the greatest potential for geothermal resource development in Shandong Province.The thermal reservoir is mainly a layered thermal reservoir,and the ground temperature is relatively uniform compared with other geothermal areas.The Dongying Formation in northwestern Shandong mainly develops mudstone,fine conglomerate,sandstone.The sedimentary thickness is controlled by basement undulation and regional structure.The research shows that the geothermal reservoir sand layer of Dongying Formation in northwestern Shandong shows a thickening trend from west to east and from south to north;The geothermal reservoir sand layer of Dongying Formation in northwestern Shandong is fine sandstone and sandy conglomerates,the general distribution law is that the thickness is the largest in the center of the depression,the thinnest in the edge of the basin,and the distribution is unstable.The thermal reservoir recharge of Dongying Formation in the area is weak,which is hard renewable resource,the anions in the water are mainly Cl-,the cations are mainly Na+,and the hydrochemical type is a Cl-Na type.
sandstone thermal reservoirreservoir fluid characteristicsDongying Formationnorthwest of Shandong Province
NETL
NSTL
万方数据
