Oil saturation determination (IE and CDN logs)
Input(s)
\(R_{o}\): Hydrocarbon Formation Resistivity (ohm m)
\(R_{t}\): Rock Resistivity (ohm m)
Output(s)
\(S_{w}\): Water Saturation (fraction)
\(S_{o}\): Oil Saturation (fraction)
Formula(s)
\[
\begin{aligned}
S_{w} & =\left(\frac{R_{o}}{R_{t}}\right)^{0.5} \\
S_{o} & =1-S_{w}
\end{aligned}
\]
Reference(s)
Bassiouni, Z., 1994, Theory, Measurement, and Interpretation of Well Logs. SPE Textbook Series Vol. 4. Chapter 11, Page: 213.