Estimation of Water Saturation in Shale Formation Using In Situ Multifrequency Dielectric Permittivity

Estimating water saturation via conventional logging tool such as resistivity cannot provide an accurate solution in a formation with low conductivity and tight porosity. As alternative, we employed dielectric permittivity, which makes it easy to differentiate the from other fluids pore structures. A multichannel frequency is used for measuring situ permittivity. To simulate two analytic models: Lichtenecker-Rother (LR) Stroud-Milton-De (SMD) models. The key goal of this research propose workflow evaluate equivalent Archie’s parameter can generate same responses core measurement results using given According LR model curve-fitting, estimated shows inversely proportional relationship clay volumes. SMD sensitive lower channels multifrequency tool. Nevertheless, utilizing response range, where interfacial polarization effect does not exist, alternative estimate shale formations relatively less conductive waters.