Determination of rock properties by low-frequency AC electrokinetics

Pengra, David B.; Xi Li, Sidney; Wong, Po-zen

doi:10.1029/1999JB900277

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Determination of rock properties by low-frequency AC electrokinetics

Author(s): David B. Pengra , Sidney Xi Li , Po-zen Wong

Publication date Created: December 10 1999

Publication date (Print): December 10 1999

Journal: Journal of Geophysical Research: Solid Earth

Publisher: American Geophysical Union (AGU)

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Most cited references 47

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Theory of dynamic permeability and tortuosity in fluid-saturated porous media

Roger F. Dashen, Joel Koplik, David Johnson (1987)

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Quantitative prediction of permeability in porous rock

A Thompson, A Katz (1986)

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Is Open Access

Steric Effects in Electrolytes: A Modified Poisson-Boltzmann Equation

I Borukhov, H Orland, D Andelman (1998)

The adsorption of large ions from solution to a charged surface is investigated theoretically. A generalized Poisson--Boltzmann equation, which takes into account the finite size of the ions is presented. We obtain analytical expressions for the electrostatic potential and ion concentrations at the surface, leading to a modified Grahame equation. At high surface charge densities the ionic concentration saturates to its maximum value. Our results are in agreement with recent experiments.