Gas tightness around salt cavern gas storage in bedded salt formations
文献类型：期刊论文
| 作者 | Li, Peng1,2; Li, Yinping1,2,3; Shi, Xilin1,2; Zhu, Shijie4; Ma, Hongling1,2; Yang, Chunhe1,2 |
| 刊名 | RENEWABLE ENERGY
 |
| 出版日期 | 2024-10-01 |
| 卷号 | 233页码:15 |
| 关键词 | Underground salt cavern Flow regime Knudsen number Permeation range Leakage ratio |
| ISSN号 | 0960-1481 |
| DOI | 10.1016/j.renene.2024.121191 |
| 英文摘要 | Underground salt cavern storage has become the preferred medium for storing gas energy and strategic substances. Salt caverns are suitable for storing small molecular gases due to the low porosity and permeability of salt rocks. This paper comprehensively analyzes the physical properties of four gases - hydrogen, helium, methane, and carbon dioxide - under subsurface temperature and pressure conditions. It categorizes the flow regimes of these gases in salt rocks under geological pressure conditions based on the Knudsen number. In a typical 1000 m salt cavern, the predominant permeation flow regime of four gases in the surrounding rock is Klinkenberg flow, with helium potentially undergoing transitional flow at low operation pressures. A 3D numerical model is established for an actual salt cavern to compare the permeation and leakage characteristics of these gases within salt rock formations. Results indicate that, under identical operation conditions, the permeation range of the gases decreases in the following order: hydrogen > methane > helium > carbon dioxide. Under the cyclic operation pressures, the cumulative leakage amount of hydrogen, helium, and methane increases over time, while that of carbon dioxide initially rises and then decreases. This behavior is attributed to the fact that the reverse-permeation rate of carbon dioxide at low pressures exceeds its permeation rate at high pressures. Over 30 years cyclic operation, the leakage ratios of the gases are as follows: hydrogen (13.29 %), methane (9.34 %), helium (7.47 %), and carbon dioxide (0.93 %), with hydrogen exhibiting the highest and carbon dioxide the lowest leakage ratios. Larger permeability results in a larger permeation range, while larger porosity leads to a smaller permeation range. When the permeability of salt layer is greater than 1e-20 m(2), the permeation range of hydrogen significantly increases. Gas leakage ratios increase with permeability nonlinearly and increase with porosity linearly. The impact of salt layer permeability on leakage ratios is greater than that of porosity. This study provides crucial guidance for the selection of geological formations for storing hydrogen, helium, methane, and carbon dioxide in salt caverns, as well as the investigation of gas permeation characteristics in salt layers. |
| 资助项目 | Excellent Youth Scientists Fund Program of National Natural Science Foundation of China[52122403] ; National Natural Science Foundation of China[52304069] ; Youth Innovation Promotion Association CAS[Y2023089] |
| WOS研究方向 | Science & Technology - Other Topics ; Energy & Fuels |
| 语种 | 英语 |
| WOS记录号 | WOS:001300014800001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/42362]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Shi, Xilin |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, Hubei Key Lab Geoenvironm Engn, Wuhan 430071, Peoples R China 4.Chongqing Univ, State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400044, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Peng,Li, Yinping,Shi, Xilin,et al. Gas tightness around salt cavern gas storage in bedded salt formations[J]. RENEWABLE ENERGY,2024,233:15. |
| APA | Li, Peng,Li, Yinping,Shi, Xilin,Zhu, Shijie,Ma, Hongling,&Yang, Chunhe.(2024).Gas tightness around salt cavern gas storage in bedded salt formations.RENEWABLE ENERGY,233,15. |
| MLA | Li, Peng,et al."Gas tightness around salt cavern gas storage in bedded salt formations".RENEWABLE ENERGY 233(2024):15. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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