A new coupled explicit finite difference model for wellbore flow and heat transfer in CO2 geological storage

doi:10.1016/j.egypro.2017.03.1491

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	A new coupled explicit finite difference model for wellbore flow and heat transfer in CO2 geological storage
	Wu, Haiqing 1,2; Li, Xiaochun1 ; He, Yuanyuan 1,2
	2017
会议日期	NOV 14-18, 2016
会议地点	Lausanne, SWITZERLAND
关键词	explicit finite difference model (EFDM) wellbore pressure heat transfer CO2 geological storage
卷号	114
DOI	10.1016/j.egypro.2017.03.1491
页码	3597-3606
英文摘要	The wellbore pressure and temperature are very significant parameters for CO2 geological storage projects, which determine the safety and effectiveness of projects. To realize the coupling calculation between wellbore pressure and temperature conveniently, this work takes the one dimensional steady flow with homogeneous fluid in wellbores as the analysis object and divides the wellbore into finite micro-segments. Then a new coupled explicit finite difference model (EFDM) for wellbore flow and heat transfer is proposed. It is novel in three aspects: (i) the EFDM about wellbore pressure is derived from the equation of continuity for one-dimensional steady pipe flow, the equation of motion and the equation of state of the fluid within a certain micro-segment. (ii) The EFDM about temperature reflecting the wellbore heat transfer between wellbore and formation is developed according to the equation of energy balance for the same micro-segment. (iii) To realize the coupling calculation of them among the integrated wellbore, the specific method of the coupling iterative calculation between the wellbore pressure and temperature is presented. At last, a comparison among the simulation results of EFDM, other models and the log data from engineering is implemented, which demonstrated that the prediction results of EFDM are more consistent with the log data than the results of other models. Therefore, the reliability of the new coupled EFDM is verified. Generally, the prediction of wellbore pressure and temperature distribution and the comprehension about the internal essence of wellbore flow and heat transfer will be effectively promoted by this work. (C) 2017 The Authors. Published by Elsevier Ltd.
会议录	13TH INTERNATIONAL CONFERENCE ON GREENHOUSE GAS CONTROL TECHNOLOGIES, GHGT-13
会议录出版者	ELSEVIER SCIENCE BV
会议录出版地	AMSTERDAM
语种	英语
WOS研究方向	Science & Technology - Other Topics ; Energy & Fuels ; Engineering
WOS记录号	WOS:000419147303076
内容类型	会议论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4932]
专题	岩土力学所知识全产出_会议论文国家重点实验室知识产出_会议论文
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Univ Chinese Acad Sci
推荐引用方式 GB/T 7714	Wu, Haiqing,Li, Xiaochun,He, Yuanyuan. A new coupled explicit finite difference model for wellbore flow and heat transfer in CO2 geological storage[C]. 见:. Lausanne, SWITZERLAND. NOV 14-18, 2016.