Undersaturated Oil Density

In this spreadsheet, just type in the required information and press the compute button. Scroll down for more info.

Rho at
Pb (lbm/cu ft)
Pressure
psia
Pb
psia
Co
1/psi
Density
at P (lbm/cu ft)
Oil density for undersaturated systems.
rho_o = rho_ob * exp[co*(p-pb)]
Where
rho_o = oil density at p and T, for p > pb, lbm/cu ft,
rho_ob = oil density at pb and T, lbm/cu ft. For more info, refer to Saturated Oil.
p= pressure of interest, psia,
pb = bubblepoint pressure at T, psia. For more info, refer to Vasquez & Beggs, Lasater, or Standing.
co = oil isothermal compressibility at T, 1/psi. For more info, refer to Isothermal Compressibility.

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