PROPERTIES OF RESERVOIR GASES - Petroleum Reservoir Fluid Property Correlations - page 24

6

4

2

0

-2

-4

-6

-8

7

6

5

4

3

2

1

0 1000 2000 3000 4000 5000 6000 7000

Reservoir Pressure, psia

Lee, Gonzales, and Eakin
Londono et al.

Sutton
Poling et al.

Fig. 2-6. Comparisons of relative errors in gas viscosity correlations using data of table 2-4
sorted and split by pressure. All calculations used the Piper et al. pseudocritical temperature and
pseudocriticaal pressure equations. The Dranchuk-Abou-Kassem z-factor equations were used to
obtain gas densities as required.