Porosity determination - IES and FDC logs

Input(s)

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

$\rho_{\text {ma }}$: Matrix Density $\left(\mathrm{g} / \mathrm{cm}^{3}\right)$

$\rho_{\mathrm{f}}$: Average Fluid Density in Pore Spaces $\left(\mathrm{g} / \mathrm{cm}^{3}\right)$

Output(s)

Ø: Porosity (fraction)

Formula(s)

$$ \varnothing=\frac{\rho_{\mathrm{ma}}-\rho_{\mathrm{b}}}{\rho_{\mathrm{ma}}-\rho_{\mathrm{f}}} $$

Reference(s)

Bassiouni, Z., 1994, Theory, Measurement, and Interpretation of Well Logs. SPE Textbook Series Vol. 4. Chapter 11, Page: 210.