Branch Fractures in Oriented Hydraulic Fracturing, Modeling, and Experiments

被引：5
|
作者：
Zhang, G. [1 ]
Lu, H. [2 ]
Zhao, W. [2 ]
机构：
[1] China Univ Petr, Beijing 102249, Peoples R China
[2] Changqing Oil Field CNPC, Xian, Peoples R China
来源：
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS | 2014年 / 36卷 / 05期
关键词：
fracture shape; hydraulic fracturing; oriented perforation;
D O I：
10.1080/15567036.2010.544005
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
A three-dimensional finite element model is established to study factors influencing factures in oriented hydraulic fracturing. The results indicate factors include horizontal principal stress difference and the angle between oriented perforation and the maximum horizontal stress. The computations reveal that hydraulic fracture will not always initiate along a perforation, and usually the hydraulic fracture is in a zigzagged shape. When the stress difference and the perforation angle are great, dual fractures will appear along both perforation and the maximum stress directions, verified by laboratory experiments. For improving the accuracy of stress measurement, oriented perforation can reduce the complexity of hydraulic fractures. © 2014 Copyright Taylor and Francis Group, LLC.
引用
收藏
页码：563 / 573
页数：11
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