Experimental and numerical investigation of supercritical CO2 migration in sandstone with multiple clay interlayers

doi:10.1016/j.ijggc.2020.103194

	Experimental and numerical investigation of supercritical CO2 migration in sandstone with multiple clay interlayers
	Xu, Liang 1,3; Li, Qi 1,3; Myers, Matthew 2; White, Cameron 2; Tan, Yongsheng 1,3
刊名	INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
	2021
卷号	104 页码:13
关键词	CO2-EWR Anisotropic sandstone Multiple clay interlayers Core flooding experiment Numerical simulation
ISSN号	1750-5836
DOI	10.1016/j.ijggc.2020.103194
英文摘要	CO2 enhanced water recovery (CO2-EWR) is one of the most promising technologies for geologic carbon sequestration. The migration characteristics and displacement efficiency of supercritical CO2 (SC-CO2) after injection into a saline aquifer directly affect the feasibility and economy of a CO2-EWR project. Multiple clay interlayers often develop in the target sandstone reservoir and combine in different expansive ways, which could influence the SC-CO2 migration. In this study, core flooding experiments were conducted using a special sandstone with multiple thin clay interlayers and the fluid behavior was monitored by an X-ray computed tomography (X-CT) scanner. Based on the porosity matrix obtained from X-CT images, a two-dimension model based on Darcy flow was developed to simulate the fluid behavior under the experiment conditions. The experimental results show that SC-CO2 pathways were developed in the sand part of the sample, while the clay interlayers were fluid-proof. Comparing the experimental and simulation results, it is evident that the porosity distribution, clay interlayers directionality/extent and flooding direction were the main factors that affected the fluid behavior in the sample. There were positive correlations between porosity and SC-CO2 saturation after drainage processes. Flooding directions and clay interlayers were combined to affect the fluid migration. The clay interlayers had functions of barrier and collection when the flooding direction pointed towards the opening of a wedge-shaped semi-open area formed by clay interlayers. While this area was almost free of SC-CO2 when the injection direction reversed, resulting a smaller SC-CO2 saturation in sample during the backward drainage process.
资助项目	National Natural Science Foundation of China[41872210] ; National Natural Science Foundation of China[41274111] ; Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering, IRSM, CAS[Z017002]
WOS研究方向	Science & Technology - Other Topics ; Energy & Fuels ; Engineering
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000609079200008
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/25640]
专题	中科院武汉岩土力学所
通讯作者	Li, Qi
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Australian Resources Res Ctr, CSIRO Energy, 26 Dick Perry Ave, Kensington, WA 6151, Australia 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China
推荐引用方式 GB/T 7714	Xu, Liang,Li, Qi,Myers, Matthew,et al. Experimental and numerical investigation of supercritical CO2 migration in sandstone with multiple clay interlayers[J]. INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL,2021,104:13.
APA	Xu, Liang,Li, Qi,Myers, Matthew,White, Cameron,&Tan, Yongsheng.(2021).Experimental and numerical investigation of supercritical CO2 migration in sandstone with multiple clay interlayers.INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL,104,13.
MLA	Xu, Liang,et al."Experimental and numerical investigation of supercritical CO2 migration in sandstone with multiple clay interlayers".INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL 104(2021):13.