Page 455 - Enhanced Oil Recovery in Shale and Tight Reservoirs

422 Enhanced Oil Recovery in Shale and Tight Reservoirs

Table 13.4 Properties of the pseudocomponents.
Pseudocomponents P crit T crit MW T b

kpa C kg/gmol C
C6-9 2735.77 324.85 0.121 277.9913
C10-13 2191.64 390.75 0.161 407.93
C14-16 1925.15 426.85 0.173 463.0484
C17-19 1656.67 476.05 0.237 571.73
C20-22 1455 509.75 0.275 641.93
C23-25 1090.27 584.55 0.372 802.13
734.636 680.55 0.531 1018.13
C25þ

1.2

1

0.8
Exp_N2
Weight % 0.6
Sim_N2_7 Pseudo Comp

0.4

0.2

0
0 50 100 150 200 250 300 350 400
o
Temperature, C
Figure 13.14 Simulation model matches the TG experiment under nitrogen purging.
1.2 14
Nitrogen Purge
Air Purge 12
1
DSC 10
8
0.8
6
Weight % 0.6 215 C 4 Heat flow, J/g/s
o
2
0.4
0
-2
0.2
-4
0 -6
0 50 100 150 200 250 300 350 400
o
Temperature, C
Figure 13.15 Nitrogen purging TG experiment, air purging TG experiment, and air
purging DSC experiment (heating rate ¼ 10 C/min).