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Explicit  natural gas viscosity correlation:

(1) \mu_g = K \cdot \exp \left( X \, \rho_g^Y \right)
(2) K = T^{1.5} \cdot \frac{9.379 + 0.01607 \, MW_g}{209.2 + 19.26 \, MW_g +T}
(3) X = 3.488 + \frac{986.4}{T} + 0.01009 \, MW_g
(4) Y = 2.447 - 0.2224 \, X

where

\mu_g

cpDynamic gas viscosity 

T

°RankineNatural Gas Temperature 

\rho_g

g/ccNatural gas density

MW_g

g/mol


The model range and statistical metrics:

Application range


Temperature100 °F ÷ 340 °F

Pressure100 psi ÷ 8,000 psi
Accuracy


AAPE2.7%


See also


Petroleum Industry / Upstream / Subsurface E&P Disciplines / Fluid (PVT) Analysis / Fluid (PVT) modelling / Dynamic fluid viscosity / Dynamic fluid viscosity @model

Natural Science / Physics /Thermodynamics / Natural gas viscosity correlations

Reference


Lee, A. L., Gonzalez, M. H., & Eakin, B. E. (1966). The Viscosity of Natural Gases. Journal of Petroleum Technology, 18(08), 997–1000. doi:10.2118/1340-PA (https://doi.org/10.2118/1340-PA)


 








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