relative permeability

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Related to Phase permeability: Relative permeability, effective permeability

relative permeability

n
(Units) the ratio of the permeability of a medium to that of free space. Symbol: μr
References in periodicals archive ?
In other words, the water phase permeability [k.sub.1], non-Darcy flow factor [[beta].sub.1], and acceleration coefficient [c.sub.al] were the functions of the volume fraction [Y.sub.1], and the sand phase permeability [k.sub.2], non-Darcy flow factor [[beta].sub.2], and acceleration coefficient [c.sub.a2] were the functions of the volume fraction [Y.sub.2].
Relative change of permeability refers to the reduction of water phase permeability's percentage after the injection of asphalt percentage, whose expression is as follows:
For polymer flooding, the water-soluble polymers are used for increasing the injection liquid viscosity to improve the mobility ratio and reduce water phase permeability, so as to enhance the oil recovery [1-4].
(1) Residual resistance coefficient of water phase (RRW): the ratio of water phase permeability before and after the water shut-off.