# Viscosity of water at reservoir pressure - McCain correlation

## Input(s)

p: Pressure (psi)

\(\mu w 1\): Viscosity of Water at Atmospheric Pressure (cP)

## Output(s)

\(\mu_{\mathrm{w}}\): Viscosity of water at Reservoir Pressure (cP)

## Formula(s)

\[
\mu w=\mu w 1 *\left(0.9994+4.0295 * 10^{-5} * p+3.1062 * 10^{-9} * p^{2}\right)
\]

## Reference(s)

Applied Petroleum Reservoir Engineering, Second Edition, Craft & Hawkins, Page: 48.