Creep monitoring and parameters inversion methods for rock salt in extremely deep formation
文献类型：期刊论文
| 作者 | Liu, Yuanxi1,2; Li, Yinping1,2,3; Shi, Xilin1,2; Ma, Hongling1,2; Zhao, Kai1,2; Dong, Zhikai1,2; Hou, Bingren4; Shangguan, Shuantong5 |
| 刊名 | GEOENERGY SCIENCE AND ENGINEERING
 |
| 出版日期 | 2023-10-01 |
| 卷号 | 229页码:12 |
| 关键词 | Salt cavern gas storage Rock salt Geomechanics Open hole section Creep monitoring Creep parameters |
| ISSN号 | 2949-8929 |
| DOI | 10.1016/j.geoen.2023.212092 |
| 英文摘要 | When underground salt caverns are used for natural gas storage, the pressure difference between the inside and outside of the cavern will cause continuous creep deformation of the surrounding rock. Understanding the creep characteristics and constitutive model parameters of rock salt in actual formations is of great significance for guiding the construction and safe operation of gas storage facilities. In this paper, a creep contraction calculation model for slender cylindrical rock salt caverns was established firstly, based on the theory of complex variables and viscoelasticity. This model can calculate the radial displacement of the surrounding rock at any moment on the cross-section of the rock salt wellbore. Subsequently, two indirect monitoring methods for deep rock salt creep using the open hole section of the well were proposed based on this model, which involves using the cavern pressure change after wellhead closure and the liquid overflow rate after wellhead opening to indirectly reflect the deformation of underground rock salt. These two sets of field experiments can be used together to determine the values of the constitutive model parameters of rock salt creep under actual stress conditions. This theoretical framework was applied in the Ningjin Salt Cavern Gas Storage Project in China. Pressure monitoring was conducted for 150 days, and wellbore fluid overflow was measured for 45 h in a rock salt well at a depth close to 3000 m. The calculated results showed good agreement with the field monitoring data, and the parameters of the Burgers creep model for rock salt under actual conditions were determined. This demonstrates the strong feasibility of the monitoring method and the validity of the computational model. Finally, using the obtained creep parameters, a quantitative analysis of the creep contraction of the wellbore was performed considering factors such as internal pressure, in situ stress, and Poisson's ratio of the rock salt. |
| 资助项目 | National Science Foundation for Excellent Young Scholars[52122403] ; Major Research Development Program of Hebei province[21374101D] ; Major Research Development Program of Hubei province[2022BAA093] |
| WOS研究方向 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001038122000001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/38996]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Li, Yinping; Zhao, Kai |
| 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.Hebei Nat Gas Co Ltd, Shijiazhuang 050043, Peoples R China 5.Hebei Bur Coal Geol Explorat, Hebei Prov Hot Dry Rock Res Ctr, 2 Explorat Team, Xingtai 054000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Yuanxi,Li, Yinping,Shi, Xilin,et al. Creep monitoring and parameters inversion methods for rock salt in extremely deep formation[J]. GEOENERGY SCIENCE AND ENGINEERING,2023,229:12. |
| APA | Liu, Yuanxi.,Li, Yinping.,Shi, Xilin.,Ma, Hongling.,Zhao, Kai.,...&Shangguan, Shuantong.(2023).Creep monitoring and parameters inversion methods for rock salt in extremely deep formation.GEOENERGY SCIENCE AND ENGINEERING,229,12. |
| MLA | Liu, Yuanxi,et al."Creep monitoring and parameters inversion methods for rock salt in extremely deep formation".GEOENERGY SCIENCE AND ENGINEERING 229(2023):12. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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