Porosity by using density log data
Input(s)
\(\rho_{b}\): Bulk Density \(\left(\mathrm{g} / \mathrm{cm}^{3}\right)\)
\(\rho_{m a}\): Matrix Density \(\left(\mathrm{g} / \mathrm{cm}^{3}\right)\)
\(\rho_{f}\): Average Fluid Density in Pore Spaces \(\left(\mathrm{g} / \mathrm{cm}^{3}\right)\)
Output(s)
\(\Phi\): Porosity (fraction)
Formula(s)
\[
\Phi=\frac{\rho_{m a}-\rho_{b}}{\rho_{m a}-\rho_{f}}
\]
Reference(s)
Bassiouni, Z., 1994, Theory, Measurement, and Interpretation of Well Logs. SPE Textbook Series Vol. 4. Chapter 8, Page: 165.