PROPERTIES OF RESERVOIR GASES - Petroleum Reservoir Fluid Property Correlations - page 13

1

0

-1

-2

-3

-4

-5

6

5

4

3

2

1

0.6 0.8 1.0 1.2 1.4 1.6

Reservoir Gas Specific Gravity

Piper et al.
Sutton (2007) with Wichert-Aziz

Elsharkawy-Elkamel
Standing with Wichert-Aziz

Fig. 2-2. Comparisons of relative errors in gas z-factor correlations using data of table 2-1 split by
gas specific gravity. All calculations used Dranchuk-Abou-Kassem z-factor equations.