A well test model for composite reservoir with resistance force on interface

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	A well test model for composite reservoir with resistance force on interface
	Sun HD(孙贺东); Liu YW(刘曰武); Shi Y
发表期刊	THE OPEN PETROLEUM ENGINEERING JOURNAL
	2013
卷号	6 期号:1 页码:43-48
ISSN	1874-8341
摘要	Tazhong No.1 gas field is a typical vug-fractured carbonate gas condensate reservoir with the characteristics of high heterogeneity and complex geological and dynamics. A physical and effective hole-diameter mathematical model for well test in the composite reservoir is established, which considers the resistance force on interface. Specifically, the following factors are involved, including wellbore storage and skin factor of inner boundary, fracture open of interface, and infinite boundary of outer boundary. Moreover, the exact solution of wellbore pressure is obtained in terms of ordinary Bessel functions in the Laplace space. The numerical computation of the solution is obtained by using the Stehfest numerical inversion method, and the behavior of the system is studied as a function of various interface parameters. Results show that the composite radius controls the time of the interface performance. The larger the composite radius, the later the interface performance begins. In addition, the condition of open fracture has a heavy impact on the transitional zone performance. Resistance force on the interface disguises the influence of the condition of the open fracture, which is more apparent with larger resistance force. Comparisons with the regular well test model shows that the new model can improve the data utilization, reduce multiple solutions of well test analysis and increase the accuracy on the identification of formation parameters and evaluation stimulation. The method is useful for the reservoir dynamic description.
关键词	Well Test Analysis Model Resistance Force On Interface Open Fracture Composite Reservoir Laplace Transform
学科领域	渗流
URL	查看原文
收录类别	EI
语种	英语
项目资助者	The author thanks the China Postdoctoral Science Foundation [2011M500403, 2012T50140]; Youth Foundation of China Petroleum Exploration and Development Research Institute fund [2009-A-17-15].
课题组名称	LMFS水环境流体力学(LEM)
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/47522
专题	流固耦合系统力学重点实验室
通讯作者	Sun HD(孙贺东)
推荐引用方式 GB/T 7714	Sun HD,Liu YW,Shi Y. A well test model for composite reservoir with resistance force on interface[J]. THE OPEN PETROLEUM ENGINEERING JOURNAL,2013,6,1,:43-48.
APA	孙贺东,刘曰武,&Shi Y.(2013).A well test model for composite reservoir with resistance force on interface.THE OPEN PETROLEUM ENGINEERING JOURNAL,6(1),43-48.
MLA	孙贺东,et al."A well test model for composite reservoir with resistance force on interface".THE OPEN PETROLEUM ENGINEERING JOURNAL 6.1(2013):43-48.

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