FIGURE 5.

The results of PNM simulations. (A) Variations in sweep efficiency for the different cases. (B) Input parameters for PNM simulations. (C) The invasion patterns of CO₂ in pore networks with different capillary factors affected by surfactin production. Cases I, III, and V represent the conditions without surfactin production, and Cases II, IV, and VI represents the conditions with surfactin production. Gray lines indicate the brine-saturated tubes in the pore networks and the red color shows the spatial distribution of CO₂. It is noted that more CO₂ occupies each pore network when surfactin produced.