equilibrium gas saturation

equilibrium gas saturation

[‚ē·kwə′lib·rē·əm ′gas ‚sach·ə′rā·shən] (petroleum engineering) Condition of zero relative permeability of a nonwetting/wetting phase system in a reservoir; relation to the nonwetting phase (for example, oil) to the wetting phase (for example, water) when the nonwetting-phase saturation is so small that relatively few pores contain it. Also known as critical gas saturation.