Page 140 - PVT Property Correlations

Gas Condensates Chapter | 5 117

given in the following table. Also, calculate the reservoir gas specific
gravity for the three gases.

Components Sample 1 Sample 2
C7 1 mol% 7.88 11.7
P sep , psia 389.7 495
T sep , F 106 70

T, F 301 238

Stock tank oil gravity, API 61.72 42.4

Reservoir gas Sp. Gr. 1.095 1.25
Separator gas Sp. Gr. 0.777 0.702
Dew point pressure, psia 5724.7 4830
C7 1 MW 164 169
C7 1 Sp. Gr. 0.8197 0.813
Field GOR, scf/STB 5390 3503
CGR, STB/MMscf 185.5 285.4
5.3 The following data come from downhole fluid analyzer. The composi-
tion is given in weight percent. Calculate the dew point pressure using
Alzahabi et al. (2017) correlation and compare with the laboratory-
measured value of 4415 psia.

Components wt.%
H 2 S 0.03
CO 2 0.67
0
N 2
C-1 20.82
C-2 9.07
C-3 7.47
i-C4 5.21
n-C4 0
n-C5 0
i-C5 3.87
C6 3.64
C7 1 % 49.1
P sep , psia 202.7
T sep , F 70

API 49.9
Reservoir gas Sp. Gr. 1.18
Separator gas Sp. Gr. 0.77
Dew point pressure 4415
C7 1 MW 193
C7 1 Sp. Gr. 0.82
Field GOR, scf/STB 3410

Reservoir T, F 190
5.4 The following gas composition is for the primary separator gas pro-
duced from a rich gas condensate reservoir in the Gulf of Mexico.
Calculate the plant products using both lean oil plant and the more