Difference between revisions of "Beggs and Robinson Oil Viscosity correlation"

From wiki.pengtools.com
Jump to: navigation, search
(→‎Math & Physics)
(→‎Math & Physics)
Line 17: Line 17:
 
Saturated oil viscosity:
 
Saturated oil viscosity:
  
−
:<math>\mu_{os} =  \alpha1 \mu^{\alpha2}_{od}</math>
+
:<math>\mu_{os} =  A \mu_{od}^B</math>
  
 
where:
 
where:

Revision as of 09:37, 25 July 2017

Brief

Beggs - Robinson is an empirical correlation for the oil viscosity published in 1975 [1].

Math & Physics

Dead oil viscosity:

\mu_{od} = 10^X-1[2]

where:

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

Saturated oil viscosity:

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

where:

B0 = 10.715
B1 = 5.615
B2 = 0.515

\alpha1 = B_0 * (B_1 * R + 100)^B2)

C0 = 5.44
C1 = 5.615
C2 = 0.338

\alpha2 = C_0 * pow(C_1 * R + 150, -C_3)

Discussion

Workflow

Application range

Nomenclature

A_0..A_{2} = coefficients
B_0..B_{2} = coefficients
C_0..C_{2} = coefficients
P = pressure, MPA
P_{bp} = bubble point pressure, MPA
R_s = oil gas ration, m3/m3
SG_g = gas specific gravity, dimensionless
T = temperature, °R
Y_{oil_API} = oil API gravity, dimensionless

References

  1. ↑ Beggs, H. D.; Robinson, J. R. (September 1975). "Estimating the Viscosity of Crude Oil Systems"Free registration required. Journal of Petroleum Technology. 27(09) (SPE-5434-PA). 
  2. ↑ Vazquez, M.; Beggs, H.D. (1980). "Correlations for Fluid Physical Property Prediction."Free registration required. Society of Petroleum Engineers (SPE-6719-PA). 
Retrieved from "https://wiki.pengtools.com/index.php?title=Beggs_and_Robinson_Oil_Viscosity_correlation&oldid=2618"