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| DOI | 10.1016/j.ijggc.2024.104125 |
| An experimental investigation on the CO 2 storage capacity of the composite confining system | |
| 发表日期 | 2024 |
| ISSN | 1750-5836 |
| EISSN | 1878-0148 |
| 起始页码 | 134 |
| 卷号 | 134 |
| 英文摘要 | Assuring secure containment of stored CO 2 is of paramount importance - for climate change mitigation, for permitting, and for reassuring the public. Regional seals, such as those sealing petroleum accumulations, have proven to be effective for securing CO 2 . However, the goal of permanent sequestration can also be satisfied with composite confining systems consisting of multiple, possibly discontinuous flow barriers that, in aggregate, create a system with very high permeability anisotropy and effectively retard the vertical migration of CO 2 . This study focuses on investigating the barrier characteristics necessary for effective containment of CO 2 , using both physical flow experiments and modified invasion percolation simulations. The simulations are calibrated to the physical experiments and are used to further extend the analysis. Results show that for a composite confining system, a) even barriers with low capillary entry pressure contrast to the underlying flow unit can divert rising CO 2 ; b) curved or anticlinal barrier topography can enhance CO 2 trapping; c) fining-upward gradations make little difference to barrier effectiveness or CO 2 retention; d) longer barriers retain more CO 2 regardless of barrier topography. Finally, field-scale simulations have demonstrated the importance of barrier length for increasing CO 2 storage capacity. The results presented can be used to inform the development of new screening criteria for characterization and effectiveness of composite confining systems. |
| 英文关键词 | CO2 geologic storage; Composite confining system; Sand tank experiments; Multiphase flow in porous media; Buoyancy-driven flow; Capillary barriers |
| 语种 | 英语 |
| WOS研究方向 | Science & Technology - Other Topics ; Energy & Fuels ; Engineering |
| WOS类目 | Green & Sustainable Science & Technology ; Energy & Fuels ; Engineering, Environmental ; Engineering, Chemical |
| WOS记录号 | WOS:001227554900001 |
| 来源期刊 | INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/298922 |
| 作者单位 | University of Texas System; University of Texas Austin |
| 推荐引用方式 GB/T 7714 | . An experimental investigation on the CO 2 storage capacity of the composite confining system[J],2024,134. |
| APA | (2024).An experimental investigation on the CO 2 storage capacity of the composite confining system.INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL,134. |
| MLA | "An experimental investigation on the CO 2 storage capacity of the composite confining system".INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL 134(2024). |
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