Undersaturated Oil Viscosity

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Vis. at
Pb (cp)
Pressure
psia
Pb
psia
Viscosity
at P (cp)
Oil Viscosity for undersaturated systems (after Vasquez and Beggs).
mu_o = mu_ob * (p/pb)**m
Where
mu_o = Viscosity at p > pb
mu_ob = viscosity at pb. For more info, refer to Saturated--Beggs & Robinson.
p= pressure of interest
pb = bubblepoint pressure. For more info, refer to Vasquez & Beggs, Lasater, or Standing.
m = C1*p**C2 * exp(C3+C4*p) and C1=2.6, C2=1.187, C3=-11.513, C4=-8.98*10**(-5).

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