absolute permeability


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absolute permeability

[′ab·sə‚lüt pər·mē·ə′bil·ə·dē]
(electromagnetism)
The ratio of the magnetic flux density to the intensity of the magnetic field in a medium; measurement is in webers per square meter in the meter-kilogram-second system. Also known as induced capacity.
(petroleum engineering)
A measurement of the capacity for flow of a single fluid (water, gas, or oil) through a rock formation when the formation is completely saturated with that fluid.
References in periodicals archive ?
In all tests, the absolute permeability is a diagonal tensor and the porous media are isotropic.
To investigate the effective stress effect, we consider the intrinsic permeability as absolute permeability instead which is an effective strain-based model.
where [t.sub.DMK] is the dimensionless time (s), [alpha] a units conversion factor (3.16>[10.sup.-4]), k is the absolute permeability (md), [sigma] is the interfacial tension (mN/m), and L is the characteristic length of the sample (cm).
Absolute permeability of brine was measured on each sample in both horizontal and vertical flow orientations.
where [k.sub.0] is the absolute permeability of the porous medium, [k.sub.ri] is the relative permeability of phase i, [[micro].sub.i] is the viscosity of phase i, and P represents phase pressure which are the same for different phases here.
Deutsch, "Calculating Effective Absolute Permeability in Sandstone/Shale Sequences," SPE Formation Evaluation, vol.
The flow in these systems can easily be studied using, for example, the Hagen-Poiseuille approximation (for single-phase flows), which can then be used to estimate the absolute permeability of the rock sample.
Bijeljic, "Computations of absolute permeability on micro-CT image," Mathematical Geosciences, vol.
The relative permeability refers to the ratio between the effective permeability of each fluid type and the absolute permeability of the rock itself, in the cases of saturated multiphase fluid in the rock pores.
Then the absolute permeability is calculated in the following term [43]:
Figure 6 shows the cross-sectional views of the initial hydrate saturation, porosity, and absolute permeability in the model.
where [k.sub.n] is the absolute permeability of grid n, as specified in data block ROCKS and [[zeta].sub.n] is the permeability modification coefficient which can be defined internally or externally and maybe provided as part of the geometry data in block ELEME and then employed to multiply the absolute permeability [k.sub.n] for each grid in the subdomain.