Difference between revisions of "Beggs and Robinson Oil Viscosity correlation"
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Dead oil viscosity: | Dead oil viscosity: | ||
| − | :<math>\mu_{od} = 10^ | + | :<math>\mu_{od} = 10^x-1</math> |
where: | where: | ||
| − | :<math> | + | :<math>x = T^{-1.163} \times e^{(13.108-6.591/SG_{o})}</math> |
Saturated oil viscosity: | Saturated oil viscosity: | ||
| Line 38: | Line 38: | ||
:<math> A </math> = coefficient | :<math> A </math> = coefficient | ||
:<math> B </math> = coefficient | :<math> B </math> = coefficient | ||
| − | + | :<math> m </math> = coefficient | |
:<math> P </math> = pressure, psia | :<math> P </math> = pressure, psia | ||
| − | |||
:<math> R_s </math> = oil gas ration, scf/stb | :<math> R_s </math> = oil gas ration, scf/stb | ||
:<math> SG_o </math> = oil specific gravity, dimensionless | :<math> SG_o </math> = oil specific gravity, dimensionless | ||
:<math> T </math> = temperature, °F | :<math> T </math> = temperature, °F | ||
| + | :<math> x </math> = coefficient | ||
| + | |||
| + | :<math> \mu </math> = viscosity, cP | ||
| − | + | ====Subscripts==== | |
| + | b - bubble point | ||
| + | od - dead oil | ||
| + | os - saturated oil | ||
| + | o - undersaturated oil | ||
=== References === | === References === | ||
Revision as of 10:10, 25 July 2017
Contents
Brief
Beggs - Robinson is an empirical correlation for the oil viscosity published in 1975 [1].
Math & Physics
Dead oil viscosity:
where:
Saturated oil viscosity:
where:
Undersaturated oil viscosity:
where:
Discussion
Application range
Nomenclature
= coefficient
= coefficient
= coefficient
= pressure, psia
= oil gas ration, scf/stb
= oil specific gravity, dimensionless
= temperature, °F
= coefficient
= viscosity, cP
Subscripts
b - bubble point od - dead oil os - saturated oil o - undersaturated oil
References
- ↑ Beggs, H. D.; Robinson, J. R. (September 1975). "Estimating the Viscosity of Crude Oil Systems"
. Journal of Petroleum Technology. 27(09) (SPE-5434-PA).
- ↑
Vazquez, M.; Beggs, H.D. (1980). "Correlations for Fluid Physical Property Prediction.". Society of Petroleum Engineers (SPE-6719-PA).
