A property characterizing characterising agility of the the reservoir fluid under pressure gradient gradient and quantified as a ratio value of reservoir permeability by normalised by dynamic fluid viscosity:
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M = \frac{k}{\mu} |
where
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| dynamic fluid viscosity |
In multiphase flow the concept of total fluid mobility is not well-defined as phases may have different mobilities and flow quite independently from each other, having different pressures, moving at different velocities and segregated in space.
But for relatively homogeneous multi-phase flow (phases may move at different velocities but occupy the same reservoir space and have the same pressure) the multi-phase mobility may be defined by Perrine model:
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\left<\frac{k}{\mu} \right> = k_{air} \left[ \frac{k_{rw}}{\mu_w} + \left( 1 + \frac{R_s \, B_g}{B_o} \right) \cdot \frac{k_{ro}}{\mu_o} + \left( 1 + \frac{R_v \, B_o}{B_g} \right) \cdot \frac{k_{rg}}{\mu_g} \right] |
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See also
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Physics / Fluid Dynamics / Percolation
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Reservoir Flow Simulation[ Field Study & Modelling / [ Complex reservoir properties ] [ Basic diffusion model parameters ]
[ Petrophysics ] [ Basic reservoir properties ] [ Permeability ] [ Absolute permeability ] [Relative permeability] [ Wettability ] [ Phase mobility ] [ Relative phase mobilities ] [ Relative Phase mobilities ]
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