Numerical Modeling of CO₂ and Brine Leakage through Open Fracture in a Fault Zone: Open Channel Flow or Darcy Flow

Figure 3

Mesh discretization based on the concept model shown in Figure 1. Picture (a) shows a full view of the grid in which a CO₂ injection well (the cyan star) is located at the right bottom side of Aquifer 1. Picture (b) is the zoom view of the fault zone, comprising a 0.05 m wide fracture zone in the middle and (highlighted by the cyan solid line) several surrounded damage zones of width closing to 1 m. The observation points B1, B2, and B3 are located at = −1290, −975, and −410 m, respectively ( = 0.0 m).

(a)

(b)