Optimization of acid gas injection to improve solubility and residual trapping

doi:10.1002/ghg.2110

	Optimization of acid gas injection to improve solubility and residual trapping
	Zhang, Xiaoyan 1,3; Li, Qi 2,3; Wei, Xiaochen 4
刊名	GREENHOUSE GASES-SCIENCE AND TECHNOLOGY
	2021-08-05
期号	-页码:23
关键词	optimization schemes solubility trapping residual trapping continuous acid gas injection intermittent acid gas injection water alternating gas injection
ISSN号	2152-3878
DOI	10.1002/ghg.2110
英文摘要	In acid gas injection, the solubility and residual trapping of acid gas can be effectively improved by optimizing the acid gas injection, which is important for short-term storage of acid gas and reducing the risk of acid gas leakage. The current study numerically investigates three different acid gas injection schemes, namely continuous acid gas injection, intermittent acid gas injection, and water alternating gas injection. The results suggest that the continuous acid gas injection with higher injection rate is slightly conducive to the solubility and residual trapping of acid gas. In particular, Continuous injection-Case1 with a rate of 19 200 Nm(3) d(-1) reduces mobile acid gas by 1.82% and enhances residual trapping by 1.25%. While the intermittent acid gas injection can hardly improve the solubility and residual trapping of acid gas. Water alternating gas injection scheme shows superior behavior over other schemes. Specially, the Water alternating gas injection-Case3 with higher water injection rate is the most effective, which can reduce mobile acid gas by 13.66% and enhance solubility trapping by 23.95%. The acid gas plume is funnel-shaped in the acid gas injection stage. However, in the subsequent water injection stage, the acid gas plume gradually becomes fan shaped. This is because the injected water accelerates the dissolution of the acid gas, causing almost all the rear of the acid gas plume to dissolve in the water. Thus, we conclude that water alternating gas injection scheme can significantly enhance the acid gas trapping and Water alternating gas injection Case 3 is the preferred injection scheme. (c) 2021 Society of Chemical Industry and John Wiley & Sons, Ltd.
资助项目	National Natural Science Foundation of China[41872210] ; National Natural Science Foundation of China[41274111] ; National Natural Science Foundation of China[51809220] ; Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering[Z018002] ; Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering[Z018004]
WOS研究方向	Energy & Fuels ; Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	WILEY PERIODICALS, INC
WOS记录号	WOS:000681334900001
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/27629]
专题	中科院武汉岩土力学所
作者单位	1.Chinese Acad Sci, Wuhan, Peoples R China 2.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Wuhan Inst Rock & Soil Mech, Wuhan, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.Southwest Petr Univ, Sch Earth Sci & Technol, Chengdu, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Xiaoyan,Li, Qi,Wei, Xiaochen. Optimization of acid gas injection to improve solubility and residual trapping[J]. GREENHOUSE GASES-SCIENCE AND TECHNOLOGY,2021(-):23.
APA	Zhang, Xiaoyan,Li, Qi,&Wei, Xiaochen.(2021).Optimization of acid gas injection to improve solubility and residual trapping.GREENHOUSE GASES-SCIENCE AND TECHNOLOGY(-),23.
MLA	Zhang, Xiaoyan,et al."Optimization of acid gas injection to improve solubility and residual trapping".GREENHOUSE GASES-SCIENCE AND TECHNOLOGY .-(2021):23.