A study concerning the conductivity of porous rock
Physics and Chemistry of the Earth, Part A: Solid Earth and Geodesy, 25 (2):
189--194 (2000)DOI: DOI: 10.1016/S1464-1895(00)00030-2
Abstract
The electrical conductivity of rock depends essentially on pore space geometry and connectivity of low resistive components. This paper presents a method to combine lattice conduction with models of pore space geometry in order to predict the conductivity of porous rock. Key parameter in this context is a quantity called connectivity which in practice can be determined from porosity and formation factor of natural rock if micro structural properties of the material are known. Simulation investigations have been performed to determine the connectivity of random lattices. An approximate equation has been developed empirically which fits the simulation data at conductivity ratios within in the range of 0.5 to 0.001. From comparison with laboratory data is concluded that the electrical conductivity of saturated porous rock can be described by means of random lattice conduction.
Description
ScienceDirect - Physics and Chemistry of the Earth, Part A: Solid Earth and Geodesy : A study concerning the conductivity of porous rock