دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n pi: laws such as Charless, Boyles, and Avogadros that describe the behaviour of gas volumes under pressure and temperature.

n: the portion of hydrocarbons that cannot be removed by ordinary producing mechanisms when a porous reservoir has been saturated with hydrocarbons. This value is usually a specific percentage of the pore volume. In the case of gas, the volume, measured at standard conditions, that is retained in a reservoir as residual gas saturation is an inverse function of the pressure, due to the effect of the gas laws.