大地电磁测深法在断裂识别中的应用  

Application of Magnetotelluric Method in Fault Identification

作　　者：贾宛瑜 陈清礼[1,2] 戴泽麟 黄江衡 薛毛毛 叶甘 JIA Wanyu;CHEN Qingli;DAI Zelin;HUANG Jiangheng;XUE Maomao;YE Gan(College of Geophysics and Petroleum Resources,Yangtze University,Wuhan 430100,China;Key Laboratory of Exploration Technologies for Oil and Gas Resources,Ministry Education,Yangtze University,Wuhan 430100,China)

机构地区：[1]长江大学地球物理与石油资源学院,武汉430100 [2]长江大学油气资源与勘探技术教育部重点实验室,武汉430100

出　　处：《科技和产业》2022年第11期321-324,共4页Science Technology and Industry

摘　　要：断裂识别对找矿、找地下水、找油气以及水利工程建设都有重要意义,由于其特殊的构造特征往往是矿液、地下水循环和油气运移富集的重要“通道”。在地球物理勘探工作中对局部断裂构造的识别方法有很多,应用大地电磁测深方法从电性差异的基础上对藏北高原库木库里测区内部隐伏断裂的识别效果进行研究和分析,结果表明该方法对于识别浅层断裂构造有较高的有效性和准确性,且较适用于地层电阻率差异较大的地区。Fault identification is of great significance for prospecting,groundwater exploration,oil and gas exploration and water conservancy project construction.Because of its special structural characteristics,it is often an important’channel’for ore fluid,groundwater circulation and oil and gas migration and enrichment.There are many identification methods for local fault structures in geophysical exploration.The geomagnetic method is used to study and analyze the identification effect of the hidden faults in the Kumukuli measurement area of the Northern Tibet Plateau from the basis of electrical differences.The results show that the proposed method has high effectiveness and accuracy for identifying shallow fracture structures,and it is more suitable for areas with large differences in formation resistivity.

关 键 词：大地电磁测深 断裂 电性差异 

分 类 号：P631.3[天文地球—地质矿产勘探]