Numerical Investigation to Influence of Perforation Angle on Hydraulic Fracturing Process

被引：0
|
作者：
Lin Bu
Shucai Li
Shaoshuai Shi
Xiaokun Xie
Liping Li
Zongqing Zhou
机构：
[1] Shandong University,Geotechnical and Structural Engineering Research Center
来源：
Geotechnical and Geological Engineering | 2019年 / 37卷
关键词：
Hydraulic fracturing; Perforation angle; Numerical simulation; Flow–stress–damage (FSD) coupling model; Homogeneous degree;
D O I：
暂无
中图分类号：
学科分类号：
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.
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页码：1125 / 1133
页数：8
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