...
Formation permeability to a given fluid normalised
-phase normalised to the reference value
(, usually to
air permeability). : Excerpt |
---|
LaTeX Math Block |
---|
| k_{r\alpha} = \frac{k_f\alpha}{k_a{air}} |
|
Units = dimensionless
The concept of relative permeability implies that different phases sweep through the same rock and under the same pressure gradient at different pace even if their viscosities are the same.
It is closely related to Wettability.
The relative permeability depends on the current rock saturation:
LaTeX Math Block |
---|
|
k_{r\alpha} = k_{r\alpha}(s = \{s_\alpha\}) |
For 3-phase Oil + Gas + Water fluid model this is going to be:
LaTeX Math Block |
---|
| k_{rw} = k_{rw}(s_w, s_g) |
|
LaTeX Math Block |
---|
| k_{ro} = k_{ro}(s_w, s_g) |
|
LaTeX Math Block |
---|
| k_{rg} = k_{rg}(s_w, s_g) |
|
Mathematical models of relative permeability are often abbreviated RPM.
Excerpt Include |
---|
| RPM @model |
---|
| RPM @model |
---|
nopanel | true |
---|
|
See alsoRelative permeability @model
...
Physics / Fluid Dynamics / Percolation
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Field Study & Modelling
[ Petrophysics ] [ Basic reservoir properties ] [ Wettability ] [ Permeability ] [ Absolute permeability ] [Relative permeability]
Reference
...
Fekete – Relative Permeability Correlations