Waxman and Smits model - Clean sands
Input(s)
F: Shaly-Sand Formation Resistivity Factor (dimensionless)
Øe: Effective Porosity (fraction)
\(\mathrm{C}_{\mathrm{cl}}\): Clay Exchange Cation Conductivity \((1 / \Omega \mathrm{m})\)
\(\mathrm{C}_{\mathrm{w}}\): Formation Water Conductivity \((1 / \Omega \mathrm{m})\)
Output(s)
\(\mathrm{C}_{\mathrm{o}}\): Brine Saturated Rock Conductivity \((1 / \Omega \mathrm{m})\)
Formula(s)
\[
\mathrm{C}_{\mathrm{o}}=\left(\frac{1}{\mathrm{~F}}\right) *\left(\mathrm{C}_{\mathrm{cl}}+\mathrm{C}_{\mathrm{w}}\right)
\]
Reference(s)
Bassiouni, Z., 1994, Theory, Measurement, and Interpretation of Well Logs. SPE Textbook Series Vol. 4. Chapter 1, Page: 17.