Numerical Modelling of Interaction between Hydraulic Fractures and Natural Fractures by Using the Extended Finite Element Method

Figure 8

Von Mises stress field under different natural fracture azimuth conditions. (a) von Mises stress (step = 3), 30°. (b) von Mises stress (step = 3), 45°. (c) von Mises stress (step = 3), 60°. (d) von Mises stress (step = 3), 135°.

(a)

(b)

(c)

(d)