Page 45 - PVT Property Correlations

Reservoir-Fluid Classification Chapter | 2 25

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PROBLEMS

2.1 The following data is available for a newly discovered reservoir. Initial res-
ervoir pressure is 3750 psia, and reservoir temperature is 210 F. Primary

separator pressure and temperature are 590 psia and 65 F. Locate the ini-

tial reservoir conditions on the phase envelope and connect the possible
path of the fluid from reservoir conditions to separator conditions. Based
on the shape of the phase envelope, identify the reservoir fluid type.
4000
Cricondentherm:337,1 F
Cricondenbar:3328.3 psi
3500

3000

Pressure, psi 2500 30% 20%

2000

1500 10%

1000

500
Separator
condition
0
0 50 100 150 200 250 300 350 400
Temperature,F

2.2 The following compositional information are available for two reservoir
fluids. Identify the fluid type for the two samples. Which fluid is
expected to have higher GOR on surface?