Effects of Different Penetration Patterns on a Fault during Underground Fluid Injection

Figure 9

Changes on the effective stress state at point (shown in Figure 6). (a), (b), and (c) display the effective stress versus time at point for Scenario 1, Scenario 2, and Scenario 3, respectively. refers to the vertical effective stress. The solid Mohr’s circle represents the initial stress state at point , and red dashed Mohr’s circle represents the stress state after 20 years.

(a)

(b)

(c)