Review on Phase Behavior in Tight Porous Media and Microscopic Flow Mechanism of CO₂ Huff-n-Puff in Tight Oil Reservoirs

Figure 3

Comparison of incremental oil recovery factor between CO₂ flooding and CO₂ huff-n-puff for the range of permeability from 0.001 mD to 0.1 mD [36] (it was calculated by subtracting the oil recovery factor of base case without CO₂ injection).