Bubblepoint Pressure -- Vasquez & Beggs
In this spreadsheet, just type in the required information
and press the compute button. Scroll down for more info.
V&B's correlation valid for 50 < pb < 5250 psia.
pb = (Rsb/(C1*Gamma_g*exp(C3*Gamma_API/(Tr+460))))**(1/C2)
pb = bubble point pressure, psia [50,5250]
Rsb = solution GOR at pb, scf/STB, [20,2070].
For more info, refer to
Vasquez & Beggs(Best),
Gamma_g = gas gravity (air=1.0), [0.56,1.18]
Tr = reservoir temperature, F, [70,295] and
Gamma_API = stock-tank oil gravity, API [16,58].
C1, C2 and C3 are constants, depending on API.
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