открытая пористость

effective porosity (also called open porosity. Refers to the fraction of the total volume in which fluid flow is effectively taking place (this excludes dead-end pores or non-connected cavities). This is very important for groundwater and petroleum flow, as well as for solute transport. (wiki) – АД); effective porosity (also called open porosity. Refers to the fraction of the total volume in which fluid flow is effectively taking place (this excludes dead-end pores or non-connected cavities). This is very important for groundwater and petroleum flow, as well as for solute transport. (wiki) Alexander Demidov)

geol.

total porosity (Joyo)

met.

apparent porosity; interconnected porosity

O&G

connected porosity (Kazuroff)

O&G, oilfield.

PIGN (петрофизика, мнемоника Шлюмберже evermore)

oil

intercommunicating porosity

polym.

hole content