Resistivity Index
The ratio of the true resistivity (Rt) to the resistivity of the same rock filled with water (Ro). It is related to water saturation by the saturation exponent n (I = Sw⁻ⁿ), and is a key component of the Archie equation.
The ratio of the true resistivity (Rt) to the resistivity of the same rock filled with water (Ro). It is related to water saturation by the saturation exponent n (I = Sw⁻ⁿ), and is a key component of the Archie equation.