1. INTRODUCTION

Estimation of electrical resistivity of saturated porous media, such as rocks and soil, has been routinely carried out in geophysical prospecting since it could be used in determination of water saturation (Picket 1966), identification of fluid type (Fan et al. 2019), and detection of contaminated zone (Pandey and Shukla 2018). Archie’s law is mostly used for interpretation of reservoir rock, which links resistivity of rock , porosity , and water saturation S, as follow: (Archie 1942)