Numerical Investigation on the Hydraulic Fracture Evolution of Jointed Shale

Figure 5

Pore pressure field of models with large confining pressure difference ( = 10 MPa,  = 5 MPa). (a) α = 0°, (b) α = 15°, (c) α = 30°, (d) α = 45°, (e) α = 60°, (f) α = 75°, and (g) α = 90°.

(a)

(b)

(c)

(d)

(e)

(f)

(g)