Oil isothermal compressibility, co(p) | bbl/stb | \displaystyle c_o(p) = \frac{-1,433 + 5 R_{sb} + 17.2 \, T-1,180 \, \gamma_g + 12.61 \, \gamma_{API}}{p \cdot 10^5} |
---|
where
p | psia | Fluid pressure |
T | °F | Initial formation temperature |
\gamma_{API} | API | Oil API gravity |
\gamma_o | frac | Oil specific gravity |
\gamma_g | frac | Gas specific gravity |
R_{sb} | scf/stb | Gas Solubility at Bubble point pressure |
See Also
Petroleum Industry / Upstream / Petroleum Engineering / Subsurface E&P Disciplines / Reservoir Engineering (RE) / PVT correlations / Oil correlations
References
Vasquez, M., and H.D. Beggs. "Correlations for Fluid Physical Property Prediction." J Pet Technol 32 (1980): 968–970. doi: https://doi.org/10.2118/6719-PA