PROPERTIES OF RESERVOIR GASES - Petroleum Reservoir Fluid Property Correlations - page 25

6

4

2

0

-2

-4

-6

8

7

6

5

4

3

2

1

0

0.55 0.60 0.65 0.70 0.75 0.80

Reservoir Gas Specific Gravity

Lee, Gonzales, and Eakin
Londono et al.

Sutton
Poling et al.

Fig. 2-7. Comparisons of relative errors in gas viscosity correlations using data of table 2-4 sorted
and split by gas specific gravity. All calculations used Piper et al. pseudocritical temperature and
pseudocritical pressure equations. The Dranchuk-Abou-Kassem z-factor equations were used to
obtain gas densities as required.