| Induced stress interaction during multi-stage hydraulic fracturing from horizontal wells using boundary element method | |
| Shi X1; Yang L(杨柳)2; Li ML3; Cheng YF1 | |
| Source Publication | 4th ISRM Young Scholars Symposium on Rock Mechanics, YSS 2017 |
| 2017 | |
| Pages | 354-358 |
| Conference Name | 4th ISRM Young Scholars Symposium on Rock Mechanics, YSS 2017 |
| Conference Date | May 10, 2017 - May 13, 2017 |
| Conference Place | Jeju, Korea, Republic of |
| Abstract | Multistage hydraulic fracturing is commonly applied to enhance gas productivity in unconventional reservoirs. Since the multiple fractures are created and propagated simultaneously or in a sequential manner from perforation clusters, the induced stress interference is a predominant reservoir geomechanical consideration in multi-stage hydraulic fracturing design. This paper presents a numerical model for multiple fracture propagation and induced stress analysis in multi-stage horizontal wells. The reservoir rock is assumed linear elastic, homogenous and isotropic. The influences of original stress condition, perforation numbers, wellbore inclination angles and some critical parameters on the feasibility of complex fracture network generation are investigated. The results demonstrate that the stress interference of the simultaneous initiation of fractures in simultaneous perforation manner is greater than conventional sequential perforation manner in one stage, which is beneficial for complex fracture network complexity. Under sequential fracturing manner, the induced stress increases with the increased length of the pressurized fracture. Moreover, the perforation orientations and original horizontal stress difference controls the stress interference simultaneously and then affect complex fracture network generation. In particular, if the horizontal stress difference is great, it’s hard to create complex fracture network under current hydraulic fracturing stimulation technology. © 2017 by Korean Society for Rock Mechanics. |
| Keyword | Boundary element method Complex networks Fracture Hydraulic fracturing Rock mechanics Sailing vessels Stress analysis Fracture network Gas productivity Horizontal stress Inclination angles Multiple fracture Sequential manners Stress condition Unconventional reservoirs |
| ISBN | 9791156103158 |
| Indexed By | EI |
| Language | 英语 |
| Document Type | 会议论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/78012 |
| Collection | 流固耦合系统力学重点实验室 |
| Affiliation | 1.China University of Petroleum (Huadong), Qingdao, Shandong, China; 2.Institute of Mechanics, Chinese Academy of Sciences, Beijing, China; 3.Chongqing Institute of Geology and Mineral Resources, Chongqing, China |
| Recommended Citation GB/T 7714 | Shi X,Yang L,Li ML,et al. Induced stress interaction during multi-stage hydraulic fracturing from horizontal wells using boundary element method[C]4th ISRM Young Scholars Symposium on Rock Mechanics, YSS 2017,2017:354-358. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| EiCpA039.pdf（228KB） | 会议论文 | 开放获取 | CC BY-NC-SA | View Download | ||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment