PROPERTIES OF RESERVOIR GASES - Petroleum Reservoir Fluid Property Correlations - page 23

4

3

2

1

0

-1

-2

-3

-4

6

5

4

3

2

1

50 100 150 200 250 300 350

Reservoir Temperature, °F

Lee, Gonzales, and Eakin
Londono et al.

Sutton
Poling et al.

Fig. 2-5. Comparisons of relative errors in gas viscosity correlations using data of table 2-4 sorted
and split by temperature. All calculations used the Piper et al. pseudocritical temperature and
pseudocritical pressure equations. The Dranchuk-Abou-Kassem z-factor equations were used to
obtain gas densities as required.