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Bubble point pressure

,


pbpsia

LaTeX Math Inline
body--uriencoded--\displaystyle \lg(p_b ) = 1.7669 + 1.7447 c_1 \, R_s%5e%7Bc_2%7D \,\lg(p%5e*_b) - 0.30218 gamma_g%5e%7Bc_3%7D \, [\lg(p%5e*_b) ]%5e2
,
\gamma_o%5e%7Bc_4%7D \, T%5e%7Bc_5%7D

LaTeX Math Inline
body--uriencoded--\displaystyle p%5e*_b = \left( R_s/\gamma_g \right)%5ea \, T%5eb \, \gamma_%7BAPI%7D%5ec

LaTeX Math Inline
bodya = 0.816 \ , \ c = -0.989

LaTeX Math Inline
body--uriencoded-- b = \begin%7Bcases%7D 0.172, & \mbox%7Bfor Black Oil%7D \\ 0.130, & \mbox%7Bfor Volatile Oil%7D \end%7Bcases%7Dc_1 = 5.38088 \cdot 10%5e%7B-3%7D, \ c_2 = 0.715082, \ c_3 = -1.877840 , \ c_4 = 3.1437, \ c_5 = 1.32657

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

...

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

[Glaso Marhoun (1980) oil correlations ]

References

...

Glaso, Oistein. "Generalized Pressure-Volume-Temperature CorrelationsAl-Marhoun, Muhammad Ali. "PVT Correlations for Middle East Crude Oils." J Pet Technol 32 40 (19801988): 785–795650–666. doi: https://doi.org/10.2118/801613718-PA