A measure of ability of a porous formation to allow a certain fluid to pass through it:
where
|
Symbol | Dimension | SI units | Oil metric units | Oil field units |
---|---|---|---|---|
L2 | m2 | md |
Permeability depends on fluid type, filling the porous media and the fluid type which is sweeping through it which leads to splitting its value into a product of two components:
k = k_a \cdot k_{rf} |
where
absolute permeability to air which is defined by the reservoir pore structure only, also denoted as or | |
relative permeability to a given fluid which is defined by the interaction between fluid and reservoir matrix |
Physics / Fluid Dynamics / Percolation
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Field Study & Modelling
[ Petrophysics ] [ Basic reservoir properties ] [ Permeability ] [ Absolute permeability ] [Relative permeability] [ Wettability ]