电阻率参数预测地热田深部温度方法技术研究  

THE DEEP TEMPERATURE PREDICTION BY RESISTIVITY IN EXPLORATION OF THE GEOTHERMAL FIELD SYSTEM

作　　者：孟银生[1,2] 张光之[1] 刘瑞德[1] 

机构地区：[1]中国地质科学院地球物理地球化学勘查研究所,廊坊065000 [2]中国地质大学地球物理与信息技术学院,北京100083

出　　处：《物探化探计算技术》2010年第1期31-34,共4页Computing Techniques For Geophysical and Geochemical Exploration

摘　　要：电阻率方法是众多地热田勘探方法中比较好的一种。用电阻率方法勘查不仅能够探测地层埋深及破碎状况,还能预测热储构造的含水性。热储构造电阻率主要取决于岩层的岩性、孔隙度、地下水矿化度及所处环境温度,当地热田勘查范围较小时,深部地层的岩性、孔隙度、地下水矿化度基本可以假定不变,因此热储构造电阻率只和温度相关。这里主要探讨地层温度和地层电阻率之间的关系,进而提出电阻率参数预测地热田深部温度方法技术,这对当前地热田勘查具有重要意义。Resistivity exploration is a better survey method among the lots of geothermal exploration methods.Resistivity exploration can not only explore the depth and the fragmentation of the stratum but also predict the hydrous property of the structure that contains thermal.The resistivity of the structures that contains thermal is mainly decided by the rock property,the gap extent of the stratum,the mineralization degree of the groundwater,and the ambient temperature of it.While the exploration scale on geothermal field is not so large,we can assume the rock property,gap extent and degree of mineralize of the deep stratum are constant parameters,so the resistivity of the structure that contains thermal is only correlated with the temperature of it.The article discusses the relation between the temperature and resistivity of the stratum,then put forward the technology using resistivity parameter to predict the temperature of the deep geothermal field,which nowadays has significant meaning to the geothermal exploration.

关 键 词：地热田 电阻率 温度 

分 类 号：P631.322[天文地球—地质矿产勘探]