Fresh water-filled porosity (fresh-water-bearing limestones)

Input(s)

$\rho b$: Bulk Density $\left(\mathrm{g} / \mathrm{cm}^{3}\right)$

$\rho l s$: Limestone Density $\left(\mathrm{g} / \mathrm{cm}^{3}\right)$

$\rho w$: Water Density $\left(\mathrm{g} / \mathrm{cm}^{3}\right)$

Output(s)

$\Phi$: Water Filled Porosity (fraction)

Formula(s)

$$ \Phi=\frac{\rho l s-\rho b}{\rho l s-\rho w} $$

Reference(s)

Bassiouni, Z., 1994, Theory, Measurement, and Interpretation of Well Logs. SPE Textbook Series Vol. 4. Chapter 8, Page: 164.