标题：Numerical Investigation to Influence of Perforation Angle on Hydraulic Fracturing Process
作者：Bu L.; Li S.; Shi S.; Xie X.; Li L.; Zhou Z.
作者机构：[Bu, L] Geotechnical and Structural Engineering Research Center, Shandong University, Jinan, 250061, China;[ Li, S] Geotechnical and Structural Engine 更多
通讯作者地址：[Shi, S] Geotechnical and Structural Engineering Research Center, Shandong UniversityChina;
来源：Geotechnical and Geological Engineering
关键词：Flow–stress–damage (FSD) coupling model; Homogeneous degree; Hydraulic fracturing; Numerical simulation; Perforation angle
摘要：Considering the heterogeneous characteristics of rock in a meso-scale, a flow–stress–damage coupling model was created based on the finite element method firstly. Then the hydraulic fracturing process of the heterogeneity rockmass under different perforation angles were investigated by the RFPA2D-flow software. The numerical simulation results show that the maximum principle stress controls the fracture propagation direction no matter how perforation angle changes. With the increase of the perforation angle, a turning fracture becomes more obvious and the turning distance bigger. The best perforation angle area is from 0° to 30°. Above results are of some significance to hydraulic fracturing tests and engineering practice. © 2018, Springer Nature Switzerland AG.