relative permeability


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relative permeability

[′rel·əd·iv ‚pər·mē·ə′bil·əd·ē]
(electromagnetism)
The ratio of the permeability of a substance to the permeability of a vacuum at the same magnetic field strength.
(geology)
Specific permeability of a porous rock formation to a particular phase (oil, water, gas) at a particular saturation and a particular saturation distribution; for example, ratio of effective permeability to a specified phase to the rock's absolute permeability.
References in periodicals archive ?
The relative permeability resistance (R) calculated with (3) is shown in Table 3.
The relative permeability curve dependence on rate was controversial probably because the capillary effect was/was not accounted for [42].
Table 1: Endpoint values of relative permeability curve of each rock type.
Secondly, for the substrate of the chip and the polydimethylsiloxane (PDMS), the conductivity and relative permeability are assumed to be 0 and 1, respectively.
4 we present the dispersion characteristics of the relative permittivity [[epsilon].sub.r], the relative permeability [[mu].sub.r], the relative impedance [[eta].sub.r] and the refractive index n of the atomic vapor with incoherent gain.
The relative permeability of coating is equal to 1.
To predict the reservoir behavior under multiphase condition, it is important to understand relative permeability of a reservoir rock to each of the fluids flowing through it.
The relative permeability of water and oil is considered from the standard relationship due to Scheidegger and Johnson [1] given by
He describes multi-phase flow, including relative permeability and situations in fractured reservoirs, and natural drainage mechanisms of hydrocarbon reservoirs.
At the Curie-Point, the relative permeability of the sample carrier falls suddenly, and the status changes instantaneously from ferromagnetic to paramagnetic.
where i represents w or g, where w is a water phase and g is a methane phase; [m.sub.i] is the mass of an i-phase fluid (kg/[m.sup.3]); [[rho].sub.i] is the mass of an i-phase fluid (kg/[m.sup.3]); [u.sub.i] is the average velocity of an i-phase fluid (m/s); K is the absolute permeability of the coal ([m.sup.2]); [[lambda].sub.i] - K [k.sub.r,i]/[[mu].sub.i] is the conductivity of an i-phase fluid; [k.sub.r,i] is the relative permeability of an i-phase fluid; [[mu].sub.i] is the dynamic viscosity of an i-phase fluid (Pa x s); and D is the height of the coordinate system (m).