Part of the effective porosity with interconnected pores:
| \phi_{\rm opn} = \frac{V_{\rm opn}}{V_r} |
See also
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Petrophysics (PP) / Volumetric Rock Model
[ Basic reservoir properties ] [ Pore volume ] [ Connected pore volume ] [ Closed pore volume ] [ Porosity ] [Effective porosity (PHIE)] [ Connected porosity ] [ Closed porosity ]