期刊
ROCK MECHANICS AND ROCK ENGINEERING
卷 49, 期 4, 页码 1389-1410出版社
SPRINGER WIEN
DOI: 10.1007/s00603-015-0816-9
关键词
FDEM; Y-flow; Hydro-mechanical coupling; Fracture network connectivity; Seepage; Hydraulic fracturing
资金
- National Natural Science Foundation of China [11202223]
- Natural Basic Research Program of China [2011CB013505, 2014CB047100]
Hydraulic fracturing is widely used in the exploitation of unconventional gas (such as shale gas).Thus, the study of hydraulic fracturing is of particular importance for petroleum industry. The combined finite-discrete element method (FDEM) proposed by Munjiza is an innovative numerical technique to capture progressive damage and failure processes in rock. However, it cannot model the fracturing process of rock driven by hydraulic pressure. In this study, we present a coupled hydro-mechanical model based on FDEM for the simulation of hydraulic fracturing in complex fracture geometries, where an algorithm for updating hydraulic fracture network is proposed. The algorithm can carry out connectivity searches for arbitrarily complex fracture networks. Then, we develop a new combined finite-discrete element method numerical code (Y-flow) for the simulation of hydraulic fracturing. Finally, several verification examples are given, and the simulation results agree well with the analytical or experimental results, indicating that the newly developed numerical code can capture hydraulic fracturing process correctly and effectively.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据