GLOSSARY

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A property characterising agility of the  fluid 

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body\alpha
-phase under pressure gradient with account of relative permeability and dynamic fluid viscosity:

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anchor1
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M_{r\alpha} = \frac{M}{k_{air}} = \frac{k_{r \alpha}}{\mu_\alpha}

where 

LaTeX Math Inline
body\displaystyle k_{r\alpha}

relative formation permeabilityto fluid 

LaTeX Math Inline
body\alpha
-phase

LaTeX Math Inline
body\displaystyle \mu_\alpha

dynamic viscosity of fluid

LaTeX Math Inline
body\alpha
-phase

LaTeX Math Inline
bodyM

phase mobility

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bodyk_{air}

absolute permeability to air


In most practical case of a 3-phase fluid model this will be:

LaTeX Math Inline
body\displaystyle M_{ro} = \frac{k_{ro}}{\mu_o}

relative oil mobility

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body\displaystyle M_{rg} = \frac{k_{rg}}{\mu_g}

relative gas mobility

LaTeX Math Inline
body\displaystyle M_{rw} = \frac{k_{rw}}{\mu_w}

relative water mobility


See also

Phase mobilities