Page 99 - Enhanced Oil Recovery in Shale and Tight Reservoirs

86 Enhanced Oil Recovery in Shale and Tight Reservoirs

Figure 4.6 Condensate saturation at every cycle.

Figure 4.7 Condensate recovery at every cycle.

4.4 Huff-n-puff versus gas flooding

As described earlier in Section 4.2, gas flooding can be performed
using the experimental setup in Fig. 4.3 to increase the core pressure so
that the liquid drop can be reduced. Under the same injection pressure
and outlet pressure as those in the huff-n-puff experiment described in
the last section, the condensate recovery is shown in Fig. 4.8 with the
predicted performance from a numerical simulation model.