Isothermal compressibility of oil - Villena-Lanzi correlation - P<Pb
Input(s)
p: Pressure (psi)
\(p_{b}\): Bubble point pressure (psi)
T: Temp \((\mathrm{F})\)
Rsob: Solution oil gas ratio at bubble point (fraction)
\(\rho\): Density of oil (API)
Output(s)
\(l c_{o}\): Isothermal Compressibility of Oil (/psi)
Formula(s)
\[
l c_{o}=-0.664-1.430 * \ln (p)-0.395 * \ln \left(p_{b}\right)+0.39 * \ln (T)+0.455 * \ln (R s o b)+0.262 * \ln (\rho)
\]
Reference(s)
Applied Petroleum Reservoir Engineering, Second Edition, Craft & Hawkins, Page: 39.