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电测井是利用地层间的电性差异来划分含水层位置的。在沉积岩地区，某些低阻地层（如泥岩）在裂隙发育的条件下亦具供水意义。本文介绍了在水井施工中，利用“IP”法测井确定给水地层的试验。发现低阻地层的“IP”响应，对贫水区的地下水开发利用具十分重要的意义
Electrical logging is the use of electrical differences between strata to divide the aquifer position. In the sedimentary area, some of the low-resistivity formations (such as mudstone) also have water supply significance under the conditions of fracture development. This paper introduces the experiment of determining the water supply formation by “IP” method in well construction. It is very important to discover the “IP ” response of low-resistance strata to the development and utilization of groundwater in poor water area