Evolution of Friction and Permeability in a Propped Fracture under Shear

Figure 1

(a) Schematic of complex fracturing system filled with proppant after multistage hydraulic fracturing; (b) Mohr-Coulomb criterion for determining whether a preexisting fracture would be sheared after a combined effect of local stress reorientation and frictional alteration.

(a)

(b)