Relationship between rock resistivity and water saturation

Input(s)

F: Formation Resistivity Factor (dimensionless)

RwR_{w}: Formation Water Resistivity (ohm m)

RtR_{t}: Rock Resistivity (ohm m)

n\mathrm{n}: Saturation Exponent (dimensionless)

Output(s)

SwS_{w}: Water Saturation (fraction)

Formula(s)

Sw=(FRwRt)1nS_{w}=\left(\frac{F * R_{w}}{R_{t}}\right)^{\frac{1}{n}}

Reference(s)

Bassiouni, Z., 1994, Theory, Measurement, and Interpretation of Well Logs. SPE Textbook Series Vol. 4. Chapter 1, Page: 11.


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