A Numerical Simulation Study of Temperature and Pressure Effects on the Breakthrough Pressure of CO2 in Unsaturated Low-permeability Rock Core
文献类型：期刊论文
| 作者 | Hu, Zhikai4; LI, Yi1,4; LI, Qi1 ; Diao, Yujie5; Ma, Xin5; Liu, Hejuan1; Feng, Guanhong3; Wang, Fugang3; Yu, Qingchun2
|
| 刊名 | ACTA GEOLOGICA SINICA-ENGLISH EDITION
 |
| 出版日期 | 2023-06-01 |
| 卷号 | 97期号:3页码:911 |
| 关键词 | CO2 geological storage CO2 breakthrough pressure unsaturated low-permeability rock multiple P-T conditions numerical simulation |
| ISSN号 | 1000-9515 |
| 英文摘要 | Gas breakthrough pressure is a key parameter to evaluate the sealing capacity of caprock, and it also plays important roles in safety and capacity of CO2 geological storage. Based on the published experimental results, we present numerical simulations on CO2 breakthrough pressure in unsaturated low-permeability rock under 9 multiple P-T conditions (which can keep CO2 in gaseous, liquid and supercritical states) and thus, a numerical method which can be used to accurately predict CO2 breakthrough pressure on rock-core scale is proposed. The simulation results show that CO2 breakthrough pressure and breakthrough time are exponential correlated with P-T conditions. Meanwhile, pressure has stronger effects on experimental results than that of temperature. Moreover, we performed sensitivity studies on the pore distribution index & lambda; (0.6, 0.7, 0.8, and 0.9) in van Genuchten-Muale model. Results show that with the increase of & lambda;, CO2 breakthrough pressure and breakthrough time both show decreasing trends. In other words, the larger the value of & lambda; is, the better the permeability of the caprock is, and the worse the CO2 sealing capacity is. The numerical method established in this study can provide an important reference for the prediction of gas breakthrough pressure on rock-core scale and for related numerical studies. |
| 学科主题 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001025156600015 |
| 出版者 | WILEY |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35471]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China 2.MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing 100083, China 3.Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, Changchun 130021, China 4.Key Laboratory of Coast Civil Engineering Structure and Safety of Education Ministry, School of Civil Engineering, Tianjin University, Tianjin 300350, China 5.Key Laboratory of Carbon Dioxide Geological Storage, Center for Hydrogeology and Environmental Geology Survey, China Geological Survey, Baoding, Hebei 071051, China |
| 推荐引用方式 GB/T 7714 | Hu, Zhikai,LI, Yi,LI, Qi,et al. A Numerical Simulation Study of Temperature and Pressure Effects on the Breakthrough Pressure of CO2 in Unsaturated Low-permeability Rock Core[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2023,97(3):911. |
| APA | Hu, Zhikai.,LI, Yi.,LI, Qi.,Diao, Yujie.,Ma, Xin.,...&Yu, Qingchun.(2023).A Numerical Simulation Study of Temperature and Pressure Effects on the Breakthrough Pressure of CO2 in Unsaturated Low-permeability Rock Core.ACTA GEOLOGICA SINICA-ENGLISH EDITION,97(3),911. |
| MLA | Hu, Zhikai,et al."A Numerical Simulation Study of Temperature and Pressure Effects on the Breakthrough Pressure of CO2 in Unsaturated Low-permeability Rock Core".ACTA GEOLOGICA SINICA-ENGLISH EDITION 97.3(2023):911. |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。