Beggs and Robinson Oil Viscosity correlation

Brief

Beggs - Robinson is an empirical correlation for the oil viscosity published in 1975 .

Math & Physics

Dead oil viscosity:

$\mu_{od} = 10^X-1$

where:

$X = T^{-1.163} \times e^{(13.108-6.591/SG_{o})}$

Saturated oil viscosity:

$\mu_{os} = A \mu_{od}^B$

where:

$A = 10.715\ (R_s + 100)^{-0.515}$

$B = 5.44\ (R_s + 150)^{-0.338}$

Undersaturated oil viscosity:

$\mu_{o} = \mu_{os} (P/P_b)^m$

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