Investigation on the permeability characteristics of bedded salt rocks and the tightness of natural gas caverns in such formations
文献类型：期刊论文
| 作者 | Li, Yinping1,2; Liu, Wei1,2,3; Muhammad, Nawaz4,5; Chen, Jie1,2,3; Spiers, C. J.4; Peach, C. J.4; Jiang Deyi2,3 |
| 刊名 | JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
 |
| 出版日期 | 2016 |
| 卷号 | 35页码:468-482 |
| 关键词 | Bedded salt rocks Natural gas cavern Permeability Interface Gas seepage Tightness |
| ISSN号 | 1875-5100 |
| DOI | 10.1016/j.jngse.2016.07.072 |
| 英文摘要 | In China, the salt formations close to the lower reaches of the large natural gas routes and the main gas consuming regions are all bedded structures. The presences of non-halite or low-halite mudstone interlayers and interfaces (salt-interlayer) in these bedded salt formations increase the concern on the tightness of the natural gas caverns constructed in such formations. Therefore, different lithotypes of samples of bedded salt rocks have been prepared to determine their gas permeability evolution by steady-state and transient pulse-decay methods. The results show that the permeability of the samples is very low, within the range of 10(-17) to 10(-21) m(2) after well compacted. The permeability of the interface is comparatively the highest, steadily around the order of 10(-12) m(2). A similar tendency of reducing permeability as deviatoric stress increases is found for all the samples; and unexpectedly there is no dilatancy and consequently steep increase of the permeability for all samples, even under very high differential stress. SEM (scanning electron microscopic) testing, as a supplement of tightness assessment, shows tight microstructure of all the bedded salt rocks cores. The experimental results indicate favourable performances for the tightness of natural gas caverns in such formations. Gas seepage around a gas cavern in such bedded salt formation was simulated by the FLAC(3D) software over a lifespan of 30 years. The results present that the interfaces act as the main channels for the gas to seep through. But the seepage distances in the vicinity of the cavern are so short that it causes a little influence on the tightness. Several factors, e.g., the internal gas pressure, the locations of interface, as well as the permeabilities of the interlayers were analyzed to investigate their effects on the tightness of a gas cavern. On the whole, the bedded salt rocks have enough low permeability and satisfactory tightness for the natural gas caverns constructed in. (C) 2016 Published by Elsevier B.V. |
| WOS研究方向 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000388543900044 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3927]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Chongqing Univ, State Key Lab Coal Mine Disaster Dynam & Control ; 3.Chongqing Univ, Coll Resources & Environm Sci ; 4.Univ Utrecht, Dept Earth Sci, High Pressure & Temp Lab, Utrecht, Netherlands; 5.Govt Coll Univ, Ctr Adv Studies Phys |
| 推荐引用方式 GB/T 7714 | Li, Yinping,Liu, Wei,Muhammad, Nawaz,et al. Investigation on the permeability characteristics of bedded salt rocks and the tightness of natural gas caverns in such formations[J]. JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING,2016,35:468-482. |
| APA | Li, Yinping.,Liu, Wei.,Muhammad, Nawaz.,Chen, Jie.,Spiers, C. J..,...&Jiang Deyi.(2016).Investigation on the permeability characteristics of bedded salt rocks and the tightness of natural gas caverns in such formations.JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING,35,468-482. |
| MLA | Li, Yinping,et al."Investigation on the permeability characteristics of bedded salt rocks and the tightness of natural gas caverns in such formations".JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING 35(2016):468-482. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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