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.