Theoretical research on gas seepage in the formations surrounding bedded gas storage salt cavern
文献类型：期刊论文
| 作者 | Chen, Xiang-Sheng1,2; Li, Yin-Ping2; Jiang, Ya-Long1; Liu, Yuan-Xi2,3; Zhang, Tao1 |
| 刊名 | PETROLEUM SCIENCE
 |
| 出版日期 | 2022-08-01 |
| 卷号 | 19期号:4页码:1766 |
| ISSN号 | 1672-5107 |
| 关键词 | Gas storage salt cavern Seepage Tightness Non-Darcy's law Leakage |
| 英文摘要 | When constructing salt cavern gas or petroleum storage in lacustrine sedimentary salt formations rich in mudstone interlayers, the influence of the sealing performance of interlayers and salt-mud interface on the storage tightness should be considered adequately. In order to reveal the gas seepage in deep formations surrounding bedded salt cavern underground storage, a leakage analysis model was established based on the characteristics of a low dip angle and the interbedded structure of bedded rock salt. The gas seepage governing equations for one-dimensional and plane radial flow were derived and solved. A gas seepage simulation experiment was conducted to demonstrate the accuracy and reliability of the theoretical calculation results. The error of the seepage range was approximately 6.70%, which is acceptable. The analysis and calculation results indicate that the motion equation of gas in deep formations satisfies a non-Darcy's law with a threshold pressure gradient and slippage effect. The sufficient condition for the gas flow to stop is that the pressure gradient is equal to the threshold pressure gradient. The relationship between the leakage range and operating time is a positive power function, that is, the leakage range gradually increases with time and eventually stabilizes. As the seepage range increases, the seepage pressure decreases sharply during the early stage, and then decreases gradually until the flow stops. Combining the research results with engineering applications, three quantitative evaluation indexes named the maximum admissible leakage range, leakage volume and leakage rate are proposed for the tightness evaluation of gas storage salt cavern during their operating stage. These indexes can be used directly in actual engineering applications and can be compared with the key design parameters stipulated in the relevant specifications. This work is expected to provide theoretical and technical support for the gas loss and tightness evaluation of gas storage salt caverns. (C) 2022 The Authors. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. |
| 学科主题 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| 出版者 | KEAI PUBLISHING LTD |
| WOS记录号 | WOS:000882974000001 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35122]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.State Key Laboratory of Performance Monitoring and Protecting of Rail Transit Infrastructure, East China Jiaotong University, Nanchang 330013, Jiangxi, China 2.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, Hubei, China 3.University of Chinese Academy of Sciences, Beijing 100049, China |
| 推荐引用方式 GB/T 7714 | Chen, Xiang-Sheng,Li, Yin-Ping,Jiang, Ya-Long,et al. Theoretical research on gas seepage in the formations surrounding bedded gas storage salt cavern[J]. PETROLEUM SCIENCE,2022,19(4):1766. |
| APA | Chen, Xiang-Sheng,Li, Yin-Ping,Jiang, Ya-Long,Liu, Yuan-Xi,&Zhang, Tao.(2022).Theoretical research on gas seepage in the formations surrounding bedded gas storage salt cavern.PETROLEUM SCIENCE,19(4),1766. |
| MLA | Chen, Xiang-Sheng,et al."Theoretical research on gas seepage in the formations surrounding bedded gas storage salt cavern".PETROLEUM SCIENCE 19.4(2022):1766. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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