# Oil formation volume factor - Beggs-Standing correlation 1 - P<Pb

## Input(s)

\(R_{s}\): Solution Gas oil ratio (fraction)

\(\gamma_{g}\): Specific Gravity of Gas (fraction)

\(\gamma_{o}\): Specific Gravity of Oil (fraction)

\(\mathrm{T}\): Temperature \((\mathrm{F})\)

## Output(s)

F: Dimensionless Factor (fraction)

\(B_{o}\): Oil formation factor (fraction)

## Formula(s)

\[
\begin{gathered}
F=R_{s} *\left(\frac{\gamma_{g}}{\gamma_{o}}\right)^{0.5}+1.25 * T \\
B_{o}=0.972+0.000147 * F^{1.175}
\end{gathered}
\]

## Reference(s)

Applied Petroleum Reservoir Engineering, Second Edition, Craft & Hawkins, Page: 37.