Evaluation method of helium tightness in rock salt with consideration of grain boundary deformation and brine viscosity
文献类型：期刊论文
| 作者 | Wang, Tongtao4; He, Tao4; Yang, Xiaoping3; Yang, Chunhe4; Xie, Dongzhou2; Liao, Youqiang4; Daemen, J. J. K.1 |
| 刊名 | SCIENCE CHINA-TECHNOLOGICAL SCIENCES
 |
| 出版日期 | 2025-04-01 |
| 卷号 | 68期号:4页码:22 |
| 关键词 | helium storage salt cavern rock salt grains fracture flow micro-permeable layers leak assessment |
| ISSN号 | 1674-7321 |
| DOI | 10.1007/s11431-024-2825-8 |
| 英文摘要 | As a non-renewable rare industrial gas resource, the decreasing production of helium has stimulated the demand for large-scale storage. Dewar tanks, storage tanks and other liquid helium storage methods are difficult to meet the needs of large-scale and long-term storage. Salt caverns have been widely used in gas energy storage due to their low permeability, which has been proven by decades of stable operation of natural gas storage. However, helium has higher permeability under the same storage conditions, and the feasibility of using rock salt for helium storage has not yet been evaluated by mature theories and standards. In addition, an overlooked fact is that the permeability characteristics of rock salt and micro-permeable layers (MPL) are very different, and MPL can provide leakage channels for high-pressure helium. In this paper, a seepage movement model of small molecule gas in MPL is established. Its calculative accuracy and engineering applicability are verified by the seepage test results. The MPL has crystal structure, which makes the permeability change with different confining pressure and gas injection pressure. The change of permeability is caused by the residual brine in the crystal void. The compaction and the increase of flow velocity of salt rock crystal void increase the viscous resistance and decrease the flow velocity. The permeability of nitrogen and helium in the MPL is different, but the difference decreases at high confining pressure and high injection pressure. In deep salt formations with plateau potential stress, the difference of surrounding rock leakage characteristics between helium and natural gas is smaller, and the expected leakage amount of helium is lower. The paper proposes a numerical calculation model suitable for predicting leaks in salt cavern helium storage facilities with known faults and structural planes, completing the assessment of helium leakage in salt caverns considering the gas physical properties, injection and production conditions, operating pressure, and in-situ stress of surrounding rocks. The above achievements can provide technical references for early-stage leakage prediction and parameter optimization in helium storage salt cavern engineering. |
| 资助项目 | National Natural Science Foundation of China[42072307] ; National Natural Science Foundation of China[52404066] ; Hubei Province Outstanding Youth Fund[2021CFA095] ; Natural Science Foundation of Wuhan[2024040701010062] ; Natural Science Foundation of Wuhan[2024040801020255] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDC10020300] |
| WOS研究方向 | Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001444050800003 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/36547]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | He, Tao |
| 作者单位 | 1.Univ Nevada, Mackay Sch Earth Sci & Engn, Reno, NV 89557 USA 2.Wuhan Univ Technol, Sch Resources & Environm Engn, Wuhan 430070, Peoples R China 3.PipeChina West East Gas Pipeline Co, Shanghai 200120, Peoples R China 4.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 | Wang, Tongtao,He, Tao,Yang, Xiaoping,et al. Evaluation method of helium tightness in rock salt with consideration of grain boundary deformation and brine viscosity[J]. SCIENCE CHINA-TECHNOLOGICAL SCIENCES,2025,68(4):22. |
| APA | Wang, Tongtao.,He, Tao.,Yang, Xiaoping.,Yang, Chunhe.,Xie, Dongzhou.,...&Daemen, J. J. K..(2025).Evaluation method of helium tightness in rock salt with consideration of grain boundary deformation and brine viscosity.SCIENCE CHINA-TECHNOLOGICAL SCIENCES,68(4),22. |
| MLA | Wang, Tongtao,et al."Evaluation method of helium tightness in rock salt with consideration of grain boundary deformation and brine viscosity".SCIENCE CHINA-TECHNOLOGICAL SCIENCES 68.4(2025):22. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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