Correlation of mud filtrate resistivity to mud resistivity

Input(s)

$\mathrm{K}_{\mathrm{m}}$: Mud Coefficient Varies with Mud Weight (dimensionless)

$\mathrm{R}_{\mathrm{m}}$: Mud Resistivity (ohm m)

Output(s)

$\mathrm{R}_{\mathrm{mf}}$: Mud Filtrate Resistivity (ohm m)

Formula(s)

$$ R_{m f}=K_{m} *\left(R_{m}\right)^{1.07} $$

Reference(s)

Bassiouni, Z., 1994, Theory, Measurement, and Interpretation of Well Logs. SPE Textbook Series Vol. 4. Chapter 4, Page: 67.