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Bubble point pressure

pbpsia

LaTeX Math Inline
body--uriencoded--\displaystyle p_b(T) = \left[ \frac%7BR_%7Bsb%7D%7D%7Bc_1 \, \gamma_g \, \exp \left[ \frac%7Bc_3 \, \gamma_%7BAPI%7D%7D%7BT+459.67%7D \right ]%7D \right]%5e%7B1/c_2%7D

LaTeX Math Inline
body--uriencoded--\gamma_%7BAPI%7D \leq 30 \ %7B\rm API%7D : \quad c_1 = 0.0362, \, c_2 = 1.0937, \ c_3 = 25.7240

LaTeX Math Inline
body--uriencoded--\gamma_%7BAPI%7D > 30 \ %7B\rm API%7D : \quad c_1 = 0.0178, \, c_2 = 1.1870, \ c_3 = 23.9310

where

LaTeX Math Inline
bodyp

psiaFluid pressure

LaTeX Math Inline
bodyT

°FInitial formation temperature

LaTeX Math Inline
body--uriencoded--\gamma_%7BAPI%7D

°APIOil API gravity

LaTeX Math Inline
body\gamma_o

fracOil specific gravity

LaTeX Math Inline
body\gamma_g

fracGas specific gravity

LaTeX Math Inline
body--uriencoded--R_%7Bsb%7D

scf/stb


See Also


Petroleum Industry / Upstream / Petroleum Engineering / Subsurface E&P Disciplines / Reservoir Engineering (RE) / PVT correlations / Oil correlations

[ Vasquez-Beggs (1980) oil correlations ]

References


Vasquez, M., and H.D. Beggs. "Correlations for Fluid Physical Property Prediction." J Pet Technol 32 (1980): 968–970, doi.org/10.2118/6719-PA