Exact(1)
However, the incompressible flow model cannot capture the physics of compressible fluids; Brace et al. (1968) method may give correct permeability trends instead of correct permeability values, for example, detecting changes in permeability as function of stress conditions, water content and heterogeneity.
Similar(59)
Forchheimer-corrected permeability.
The ratio of effective (measured) rock permeability to f c is the intrinsic (corrected) permeability.
Note that in this paper, we use terms "intrinsic permeability" and "corrected permeability" interchangeably.
Appendix contains the Klinkenberg corrected permeability for all samples tested in this study.
With the above workflow, we can estimate the intrinsic or corrected permeability values from the permeability measurements.
A larger measured permeability generally corresponds to a smaller relative difference between measured and corrected permeability values.
A plot based on our approach is presented to describe the relationships between measured and corrected permeability for typical Gas Research Institute permeability test conditions.
The Forchheimer-corrected permeability (k_{text{forch}}) is taken as the inverse of the y-intercept of the best-fit linear regression of this positive linear relationship.
It is generally believed that the slippage factor shows the increase in gas flow due to slip proportional to Klinkenberg-corrected permeability; however, the slope of the Klinkenberg plots denotes the total contribution of slip flow to the measured permeability.
For leakier monolayers, the TEER can be used to derive a corrected permeability coefficient for a drug from the measured Papp (Gaillard and de Boer, 2000); however, when TEER is high enough for Papp to be relatively independent of TEER, the measured Papp is sufficient without correction, and suitable for comparisons between laboratories.
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