A numerical approach for pressure transient analysis of a vertical well with complex fractures

doi:10.1007/s10409-016-0568-0

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-)

	A numerical approach for pressure transient analysis of a vertical well with complex fractures
	Wan YZ; Liu YW(刘曰武); Liu WC(刘文超); Han GF; Niu CC; Liu, YW (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China.
刊名	ACTA MECHANICA SINICA
	2016
卷号	32 期号:4 页码:640-648
关键词	Fractured Well Discrete-fracture Model Numerical Well Test Hybrid Finite Element Method Complex Fracture
ISSN号	0567-7718
DOI	10.1007/s10409-016-0568-0
产权排序	[Wan, Yizhao; Liu, Yuewu; Liu, Wenchao; Han, Guofeng; Niu, Congcong] Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China
文献子类	期刊论文
英文摘要	A new well test model for a vertical fractured well is developed based on a discrete-fracture model in which the fractures are discretized as one dimensional (1-D) entities. The model overcomes the weakness of complex meshing, a large number of grids, and instability in conventional stripe-fracture models. Then, the discrete-fracture model is implemented using a hybrid element finite-element method. Triangular elements are used for matrix and line elements for the fractures. The finite element formulation is validated by comparing with the semi-analytical solution of a single vertical fractured well. The accuracy of the approach is shown through several examples with different fracture apertures, fracture conductivity, and fracture amount. Results from the discrete-fracture model agree reasonably well with the stripe-fracture model and the analytic solutions. The advantages of the discrete-fracture model are presented in mesh generation, computational improvement, and abilities to handle complex fractures like wedge-shaped fractures and fractures with branches. Analytical results show that the number of grids in the discrete-fracture model is 10 % less than stripe-fracture model, and computational efficiency increases by about 50 %. The more fractures there are, the more the computational efficiency increases.
分类号	二类
URL标识	查看原文
WOS关键词	Fractured well ; Discrete-fracture model ; Numerical well test ; Hybrid finite element method ; Complex fracture
WOS研究方向	Engineering ; Mechanics
语种	英语
WOS记录号	WOS:000380665600007
资助机构	This work was supported by the National Natural Science Foundation of China (Grant 51404232), the National Science and Technology Major Project (Grant 2011ZX05038003), and the China Postdoctoral Science Foundation (Grant 2014M561074).
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/59754]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
通讯作者	Liu, YW (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China.
推荐引用方式 GB/T 7714	Wan YZ,Liu YW,Liu WC,et al. A numerical approach for pressure transient analysis of a vertical well with complex fractures[J]. ACTA MECHANICA SINICA,2016,32(4):640-648.
APA	Wan YZ,刘曰武,刘文超,Han GF,Niu CC,&Liu, YW .(2016).A numerical approach for pressure transient analysis of a vertical well with complex fractures.ACTA MECHANICA SINICA,32(4),640-648.
MLA	Wan YZ,et al."A numerical approach for pressure transient analysis of a vertical well with complex fractures".ACTA MECHANICA SINICA 32.4(2016):640-648.