IDENTIFICATION OF TYPE OF RESERVOIR FLUID - Petroleum Reservoir Fluid Property Correlations - page 199

25000

20000

15000

10000

5000

2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0

Composition of Heptanes Plus In Reservoir Fluid, mole %

Fig. 5-6. Which gas condensates can be treated as wet gases? (Data are from 349 reservoir
fluid studies.)

Summation of use of initial producing gas-liquid ratio
as an indicator of fluid type
Thus, table 1 of McCain (1994) should be replaced with the table 5-1. 8

Table 5-1. Determination of reservoir fluid type can be made with the initial producing
gas-liquid ratio.
Reservoir Fluid Initial Producing Gas-Liquid Ratio, scf/STB

Dry gas* 100,000 < GLR i

Wet gas* 15,000 < GLR i < 100,000

Gas condensate 3,200 < GLR i < 15,000

Volatile oil 1,900 < GLR i < 3,200

Indeterminate by GLR i 1,500 < GLR i < 1,900

Black oil GLR i < 1,500

* The GLR i limits for these gases are defined for engineering applications.