Modeling the key factors that could influence the diffusion of CO2 from a wellbore blowout in the Ordos Basin, China

doi:10.1007/s11356-016-8036-8

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	Modeling the key factors that could influence the diffusion of CO2 from a wellbore blowout in the Ordos Basin, China
	Wei, Xiaochen 1,2; Li, Qi1 ; Shi, Hui 1,2; Yang, Duoxing 3
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2017
卷号	24 期号:4 页码:3727-3738
关键词	CO2 capture and storage (CCS) Wellbore leakage CO2 diffusion Uncertainty analysis Environmental risk assessment Risk matrix
ISSN号	0944-1344
DOI	10.1007/s11356-016-8036-8
英文摘要	Carbon dioxide (CO2) blowout from a wellbore is regarded as a potential environment risk of a CO2 capture and storage (CCS) project. In this paper, an assumed blowout of a wellbore was examined for China's Shenhua CCS demonstration project. The significant factors that influenced the diffusion of CO2 were identified by using a response surface method with the Box-Behnken experiment design. The numerical simulations showed that the mass emission rate of CO2 from the source and the ambient wind speed have significant influence on the area of interest (the area of high CO2 concentration above 30,000 ppm). There is a strong positive correlation between the mass emission rate and the area of interest, but there is a strong negative correlation between the ambient wind speed and the area of interest. Several other variables have very little influence on the area of interest, e.g., the temperature of CO2, ambient temperature, relative humidity, and stability class values. Due to the weather conditions at the Shenhua CCS demonstration site at the time of the modeled CO2 blowout, the largest diffusion distance of CO2 in the downwind direction did not exceed 200 m along the centerline. When the ambient wind speed is in the range of 0.12.0 m/s and the mass emission rate is in the range of 60120 kg/s, the range of the diffusion of CO2 is at the most dangerous level (i.e., almost all Grade Four marks in the risk matrix). Therefore, if the injection of CO2 takes place in a region that has relatively low perennial wind speed, special attention should be paid to the formulation of pre-planned, emergency measures in case there is a leakage accident. The proposed risk matrix that classifies and grades blowout risks can be used as a reference for the development of appropriate regulations. This work may offer some indicators in developing risk profiles and emergency responses for CO2 blowouts.
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000397004600043
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4012]
专题	岩土力学所知识全产出_期刊论文国家重点实验室知识产出_期刊论文
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Univ Chinese Acad Sci ; 3.Inst Crustal Dynam, China Earthquake Adm
推荐引用方式 GB/T 7714	Wei, Xiaochen,Li, Qi,Shi, Hui,et al. Modeling the key factors that could influence the diffusion of CO2 from a wellbore blowout in the Ordos Basin, China[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2017,24(4):3727-3738.
APA	Wei, Xiaochen,Li, Qi,Shi, Hui,&Yang, Duoxing.(2017).Modeling the key factors that could influence the diffusion of CO2 from a wellbore blowout in the Ordos Basin, China.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,24(4),3727-3738.
MLA	Wei, Xiaochen,et al."Modeling the key factors that could influence the diffusion of CO2 from a wellbore blowout in the Ordos Basin, China".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 24.4(2017):3727-3738.