(1)Shi F, Wang X L, Liu C, Liu H, Wu H A. An XFEM-based numerical model to calculate conductivity of propped fracture considering proppant transport, embedment and crushing. Journal of Petroleum Science and Engineering, 2018, 167: 615-626.
(2)Shi F, Wang X L, Liu C, Liu H, Wu H A. An XFEM-based method with reduction technique for modeling hydraulic fracture propagation in formations containing frictional natural fractures. Engineering Fracture Mechanics, 2017, 173: 64-90.
(3)Shi F, Wang X L, Liu C, Liu H, Wu H A. A coupled extended finite element approach for modeling hydraulic fracturing in consideration of proppant. Journal of Natural Gas Science and Engineering, 2016, 33: 885-897.