Which one of the following can be estimated from SP log against a saline water saturated sandstone formation encountered in a well GATE Geology and Geophysics Question 2012

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Which one of the following can be estimated from SP log against a saline-water saturated sandstone formation encountered in a well? GATE-Geology and Geophysics-Question-2012

Which one of the following can be estimated from SP log against a saline-water saturated sandstone formation encountered in a well?
(A) Resistivity of formation water (B) Degree of water saturation
(C) Depth of invasion (D) Permeability


By:Amogh

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Answer : (A) Resistivity of formation water
Resistivity is the one of the most difficult formation parameters to measure accurately because of the complex changes that occur during and after drilling a well and that may still be occurring during logging. The various components of the downhole environment may have strongly contrasting resistivities, some of which cannot be measured directly, and their physical dimensions may not be readily available.

milan-ransingh

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