Electrical well logging is a ...

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Electrical well logging is a kind of geophysical logging tool for ground water exploration. It involves the continuous recording of electrical resistance, resistivity and spontaneous potential (SP) of formations of a drilled bore hole. This helps to identify the formations and also delineate freshwater aquifers from saline aquifers.It is also used to delineate the fracture system in hard-rock terrain, for rejuvenation of poor/low-yielding bore wells. http://www.indiawaterportal.org/sites/indiawaterportal.org/files/ELEC%20LOGGGING-2.pdf