Critical pressure Cavett relation

Input(s)

$T_{b}$: Boiling Point Temperature $\left({ }^{\circ} \mathrm{F}\right)$

API: API Gravity of oil (API)

Output(s)

$P_{c}$: Critical Pressure (Psi)

Formula(s)

$$ \begin{aligned} \mathrm{P}_{\mathrm{c}}= & 10^{(2.829)}+\left(0.0009112 * \mathrm{~T}_{\mathrm{b}}\right)-\left(0.0000030175 * \mathrm{~T}_{\mathrm{b}}^{2}\right)+\left(0.0000000015141 * \mathrm{~T}_{\mathrm{b}}^{3}\right)-\left(0.000020876 * \mathrm{~T}_{\mathrm{b}} * \mathrm{API}\right) \\ & +\left(0.000000011048 * \mathrm{~T}_{\mathrm{b}}^{2} * \mathrm{API}\right)+\left(0.0000000001395 * \mathrm{~T}_{\mathrm{b}}\right)^{2} * \mathrm{~A} \end{aligned} $$

Reference(s)

Wikipedia.org.