Modified capillary number
Input(s)
\(\boldsymbol{\mu}_{\mathrm{w}}\): Viscosity of water \((\mathrm{cP})\)
\(\boldsymbol{\mu}_{\mathbf{o}}\): Viscosity of oil (cP)
\(\sigma\): Interfacial tension \((\) dyn \(/ \mathrm{cm})\)
v: Characteristic velocity (ft/D)
Output(s)
Mc: Modified Capillary Number (dimensionless)
Formula(s)
\[
M c=\left(\mu_{w} * \frac{v}{\sigma}\right) *\left(\frac{\mu_{w}}{\mu_{o}}\right)^{0.4}
\]
Reference(s)
Petrowiki.org.