But for
A property characterising agility of the fluid under pressure gradient with account of reservoir permeability and fluid viscosity:
| \bigg<\frac{k}{\mu} \bigg> = \frac{k_f}{\mu_f} |
where
k_f | formation permeability to fluid "f" |
|---|---|
\mu_f | viscosity of fluid "f" |
In multiphase flow the concept of fluid mobility is not well-defined as phases may flow quite indepedently from each other and have different dynamic parameters (pressure and velocity).