Induced stress interaction during multi-stage hydraulic fracturing from horizontal wells using boundary element method

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	Induced stress interaction during multi-stage hydraulic fracturing from horizontal wells using boundary element method
	Shi X 1; Yang L(杨柳)2; Li ML 3; Cheng YF 1
	2017
会议日期	May 10, 2017 - May 13, 2017
会议地点	Jeju, Korea, Republic of
关键词	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
页码	354-358
英文摘要	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.
会议录	4th ISRM Young Scholars Symposium on Rock Mechanics, YSS 2017
语种	英语
ISBN号	9791156103158
内容类型	会议论文
源URL	[http://dspace.imech.ac.cn/handle/311007/78012]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
作者单位	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
推荐引用方式 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]. 见:. Jeju, Korea, Republic of. May 10, 2017 - May 13, 2017.