综合物探工作方法在地热勘查中的应用

Application of Comprehensive Geo-prospecting Method in Geothermal Exploration

随社会发展,地热资源的利用得到广泛关注。山东地热能源丰富,是典型地热区。本文以藏马山地区地热定井为例,分享在地热勘查中"由面及线,由线及点"的工作心得,从研究工区的水文、地质条件出发,结合物探反演成果,推断查明靶区构造的产状及地层结构。物探方法上,选取"面域"方法 -地质、"线域"方法 -联合剖面法及CSAMT、"点域"方法 -大极距电阻率测深。结果 :设计深度2000m,终孔深度1810m,72h后水温47.6℃,出水量达90/h。

With the development of society, the utilization of geothermal resources has attracted wide attention. Shandong is a typical geothermal area with abundant geothermal energy. Taking the geothermal well in CangMashan area as all example, this paper shares the work experience of ＂surface and line, line and point＂ in geothermal exploration. From the hydrological and geological conditions of the study area and the results of geophysical inversion, it is inferred to find out the formation and formation structure of the target structure. For the geophysical prospecting methods, the ＂surface area＂ method, the geology, the ＂line area＂ method, the joint section method and the CSAMT, the ＂point area＂ method, the large polar resistivity sounding are selected. Results： the design depth is 2000m, the final hole depth is 1810m, the water temperature of 72h is 47.6℃ degrees, and the water output is 90/h.