Numerical pressure transient analysis for unfilled-caved carbonate reservoirs based on Stokes-Darcy coupled theory

doi:10.1016/j.petrol.2020.107085

IMECH-IR > 流固耦合系统力学重点实验室

	Numerical pressure transient analysis for unfilled-caved carbonate reservoirs based on Stokes-Darcy coupled theory
	Wan YZ1,2 ; Liu YW(刘曰武)3 ; Wu NY 1,2
通讯作者	Wan, Yizhao([email protected])
发表期刊	JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
	2020-07-01
卷号	190 页码:9
ISSN	0920-4105
摘要	Caved carbonate reservoirs are very special because of the strong heterogeneity. The pressure transient behavior of the caved carbonate reservoirs is quite different from the conventional homogeneous or dual medium reservoirs because of the presence of large-scale cavities. There are two types of cavities: filled and unfilled, which dominated the production of the reservoirs. Fluid flow in the unfilled cavity should be described by Stokes' equation rather than Darcy's law. It is needed to better understand the role of the unfilled cavities plays in the pressure transient analysis. The objective of this work is to analyze the pressure transient behavior of the unfilled cavities. A coupled Stokes-Darcy pressure transient model is developed and the finite element method is applied in the solutions of the mathematical models. Then, the numerical pressure transient model is used in the analysis of two typical cases: a well drilled into the unfilled cavity (WIC) and a well not drilled into the unfilled cavity (WOC). The type curves of the WIC model indicate that flow in the unfilled cavity is an oscillated pressure-drop rather than a radial flow. The unfilled cavity that the well drilled into would be considered as an enlarged wellbore which is equivalent to a negative skin factor, as a consequence the wellbore storage coefficient will increase. Main characteristics of type curves for WOC model are the valley on the pressure derivative. A cavity with a larger size and smaller distance from the wellbore would give rise to a deeper valley. Comparative results indicate that unfilled cavities described by the Stokes' equation are not the limit of the filled cavities with extremely large mobility, which was predicted by previous work.
关键词	Carbonate reservoir Pressure transient behavior Stokes-Darcy coupled Flow in porous media Numerical simulation
DOI	10.1016/j.petrol.2020.107085
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000531623500009
关键词[WOS]	TARIM BASIN ; BOUNDARY-CONDITION ; MODEL ; FLOW ; VUGGY ; WELL ; CAVITY
WOS研究方向	Energy & Fuels ; Engineering
WOS类目	Energy & Fuels ; Engineering, Petroleum
资助项目	National Natural Science Foundation of China[41906187] ; Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, China[MMRZZ201807] ; Shandong Provincial Natural Science Foundation, China[ZR2019BD058] ; Taishan Scholar Special Experts, China Project[ts201712079]
项目资助者	National Natural Science Foundation of China ; Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, China ; Shandong Provincial Natural Science Foundation, China ; Taishan Scholar Special Experts, China Project
论文分区	一类
力学所作者排名	2
RpAuthor	Wan, Yizhao
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/82007
专题	流固耦合系统力学重点实验室
作者单位	1.Minist Nat Resources Peoples Republ China, Key Lab Gas Hydrate, Qingdao Inst Marine Geol, Qingdao 266071, Peoples R China; 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266071, Peoples R China; 3.Chinese Acad Sci, Inst Mech, Beijing 100019, Peoples R China
推荐引用方式 GB/T 7714	Wan YZ,Liu YW,Wu NY. Numerical pressure transient analysis for unfilled-caved carbonate reservoirs based on Stokes-Darcy coupled theory[J]. JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,2020,190:9.Rp_Au:Wan, Yizhao
APA	Wan YZ,刘曰武,&Wu NY.(2020).Numerical pressure transient analysis for unfilled-caved carbonate reservoirs based on Stokes-Darcy coupled theory.JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,190,9.
MLA	Wan YZ,et al."Numerical pressure transient analysis for unfilled-caved carbonate reservoirs based on Stokes-Darcy coupled theory".JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING 190(2020):9.

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