POSC Specifications
Version 3.0
Epicentre Standard Values
ref_fluid_saturation

ref_fluid_saturation

Standard Instance Values

identifier description source version status
      ref _version .identifier  
trapped The fluid phase saturation at which the phase becomes discontinuous and unable to flow. This may be at a saturation greater than the residual saturation due to hysteresis. Also known as immobile saturation. POSC epicentre 2.1 current
residual The displaced fluid phase saturation which represents the in-situ saturation when a displacement process utilized reaches its economic limit. POSC epicentre 2.1 current
irreducible The fluid phase saturation at which the in-situ saturation cannot be reduced. The saturation corresponding to near-infinite capillary pressure. POSC epicentre 2.1 current
interstitial The fluid saturations that are trapped in the interstices of a rock. POSC epicentre 2.1 current
critical The fluid phase saturation at which the fluid phase becomes mobile. This may be greater than the trapped saturation. POSC epicentre 2.1 current
displacement The displacing fluid phase saturation occuring at the displacement front, such as estimated by Buckley-Leverett for immiscible displacement. POSC epicentre 2.1 current
initial The original, in-situ fluid phase saturation. POSC epicentre 2.1 current
current The fluid phase saturation existing at the time of description. POSC epicentre 2.1 current
final The fluid phase saturation that existed or is expected to exist at the time that all operations are terminated. POSC epicentre 2.1 current

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