Average compressibility of oil

Input(s)

V: Reference Volume (volume fraction relative to bubble point volume or higher pressure)

$V_{1}$: Volume Fraction at Higher Pressure (fraction)

$V_{2}$: Volume Fraction at Lower Pressure (fraction)

$p_{1}$: Pressure (Relative to $\left.\mathrm{V}_{1}\right)(\mathrm{psi})$

$p_{2}$: Pressure (Relative to $\mathrm{V}_{2}$ ) (psi)

Output(s)

$C_{o}$: Average Compressibility of Oil $\left(\operatorname{psi}^{`}(-1)\right)$

Formula(s)

$$ \mathrm{C}_{\mathrm{o}}=-\frac{1}{\mathrm{~V}} *\left(\frac{\mathrm{V}_{1}-\mathrm{V}_{2}}{\mathrm{p}_{1}-\mathrm{p}_{2}}\right) $$

Reference(s)

Craft, B. C., Hawkins, M., \& Terry, R. E. (1991). Applied Petroleum Reservoir Engineering. 2nd Edition, Page: 38 .