Research on the Seismic Response Law of Complete Morphology of Butted Well Salt Cavern for Large-Scale Underground Energy Storage
The conversion of abandoned butted well salt cavities into underground storage facilities holds immense significance for safeguarding energy security and improving the ecological environment. A significant barrier to the reconstruction of these old cavities is the limited comprehension of their comp...
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2025-01-01
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| author | Haitao Li Dewen Zheng Kang Li Qiqi Wanyan Lina Ran Yanxia Kou Song Bai Jianan Wu Jianchao Jia Yunfei Wen Yuanqing Wang Hongyan Xing Kuoyuan Zhu Jingen Deng |
| author_facet | Haitao Li Dewen Zheng Kang Li Qiqi Wanyan Lina Ran Yanxia Kou Song Bai Jianan Wu Jianchao Jia Yunfei Wen Yuanqing Wang Hongyan Xing Kuoyuan Zhu Jingen Deng |
| author_sort | Haitao Li |
| collection | DOAJ |
| description | The conversion of abandoned butted well salt cavities into underground storage facilities holds immense significance for safeguarding energy security and improving the ecological environment. A significant barrier to the reconstruction of these old cavities is the limited comprehension of their complete morphology, caused by residue coverage. The three-dimensional seismic techniques excel in identifying complex geological structures but have a limited understanding of underground old salt cavity morphology, thus the seismic forward simulation method is utilized to study their seismic response patterns. Based on 3D seismic data, well logging data, and measured cavity shape parameters from the Yexian salt mine region in Henan Province, China, a geological model and observation system were established. The seismic response characteristics of the butted well salt cavern model, encompassing five distinct morphological attributes such as cavity spacing, cavity diameter, cavity height, sediment height, and horizontal connection channel height, were thoroughly investigated. The findings show that the cavity roof exhibits a distinctive “two peaks sandwiching a strong valley” feature, with the positions of the valley and roof remaining aligned and serving as a reliable indicator for identifying the cavity’s top surface. The width of the roof waveform exhibits an exponential amplification effect relative to the cavern width. The residue’s top surface presents an “upward-opening arc” wave peak with a downward shift that diminishes as the residue’s height increases. This peak forms a circular feature with the cavity roof reflection waveform, and the residue’s top surface is always located in the upper half of this circular waveform. The horizontal connection channel’s top and bottom surfaces exhibit contrasting reflection patterns, with the top position aligning with the reflection trough and the bottom reflection waveform shifting downward as the channel height increases. The brine cavern, residue, and bottom of the salt cavern mainly exhibit chaotic reflections. There are distinct identification characteristics on the cavity top, residue top, and connecting channel top in forward simulation. The research findings provide valuable guidance for identifying the morphology of the underground real butted well salt cavity based on 3D seismic data and accelerating the construction of underground energy storage facilities. |
| format | Article |
| id | doaj-art-818f83dd86c24a9ea92e42d55e0fec76 |
| institution | Kabale University |
| issn | 2076-3417 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj-art-818f83dd86c24a9ea92e42d55e0fec762025-01-24T13:19:50ZengMDPI AGApplied Sciences2076-34172025-01-0115256410.3390/app15020564Research on the Seismic Response Law of Complete Morphology of Butted Well Salt Cavern for Large-Scale Underground Energy StorageHaitao Li0Dewen Zheng1Kang Li2Qiqi Wanyan3Lina Ran4Yanxia Kou5Song Bai6Jianan Wu7Jianchao Jia8Yunfei Wen9Yuanqing Wang10Hongyan Xing11Kuoyuan Zhu12Jingen Deng13PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, ChinaPetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, ChinaPetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, ChinaPetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, ChinaPetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, ChinaPetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, ChinaPetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, ChinaPetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, ChinaPetroChina Henan Gas Storage Company, Zhengzhou 450001, ChinaPetroChina Henan Gas Storage Company, Zhengzhou 450001, ChinaPetroChina Henan Gas Storage Company, Zhengzhou 450001, ChinaPetroChina Henan Gas Storage Company, Zhengzhou 450001, ChinaPetroChina Henan Gas Storage Company, Zhengzhou 450001, ChinaCollege of Petroleum Engineering, China University of Petroleum, Beijing 102249, ChinaThe conversion of abandoned butted well salt cavities into underground storage facilities holds immense significance for safeguarding energy security and improving the ecological environment. A significant barrier to the reconstruction of these old cavities is the limited comprehension of their complete morphology, caused by residue coverage. The three-dimensional seismic techniques excel in identifying complex geological structures but have a limited understanding of underground old salt cavity morphology, thus the seismic forward simulation method is utilized to study their seismic response patterns. Based on 3D seismic data, well logging data, and measured cavity shape parameters from the Yexian salt mine region in Henan Province, China, a geological model and observation system were established. The seismic response characteristics of the butted well salt cavern model, encompassing five distinct morphological attributes such as cavity spacing, cavity diameter, cavity height, sediment height, and horizontal connection channel height, were thoroughly investigated. The findings show that the cavity roof exhibits a distinctive “two peaks sandwiching a strong valley” feature, with the positions of the valley and roof remaining aligned and serving as a reliable indicator for identifying the cavity’s top surface. The width of the roof waveform exhibits an exponential amplification effect relative to the cavern width. The residue’s top surface presents an “upward-opening arc” wave peak with a downward shift that diminishes as the residue’s height increases. This peak forms a circular feature with the cavity roof reflection waveform, and the residue’s top surface is always located in the upper half of this circular waveform. The horizontal connection channel’s top and bottom surfaces exhibit contrasting reflection patterns, with the top position aligning with the reflection trough and the bottom reflection waveform shifting downward as the channel height increases. The brine cavern, residue, and bottom of the salt cavern mainly exhibit chaotic reflections. There are distinct identification characteristics on the cavity top, residue top, and connecting channel top in forward simulation. The research findings provide valuable guidance for identifying the morphology of the underground real butted well salt cavity based on 3D seismic data and accelerating the construction of underground energy storage facilities.https://www.mdpi.com/2076-3417/15/2/564underground energy storagebutted well salt cavern morphologyseismic forward simulationseismic reflection characteristicshorizontal connection channel |
| spellingShingle | Haitao Li Dewen Zheng Kang Li Qiqi Wanyan Lina Ran Yanxia Kou Song Bai Jianan Wu Jianchao Jia Yunfei Wen Yuanqing Wang Hongyan Xing Kuoyuan Zhu Jingen Deng Research on the Seismic Response Law of Complete Morphology of Butted Well Salt Cavern for Large-Scale Underground Energy Storage Applied Sciences underground energy storage butted well salt cavern morphology seismic forward simulation seismic reflection characteristics horizontal connection channel |
| title | Research on the Seismic Response Law of Complete Morphology of Butted Well Salt Cavern for Large-Scale Underground Energy Storage |
| title_full | Research on the Seismic Response Law of Complete Morphology of Butted Well Salt Cavern for Large-Scale Underground Energy Storage |
| title_fullStr | Research on the Seismic Response Law of Complete Morphology of Butted Well Salt Cavern for Large-Scale Underground Energy Storage |
| title_full_unstemmed | Research on the Seismic Response Law of Complete Morphology of Butted Well Salt Cavern for Large-Scale Underground Energy Storage |
| title_short | Research on the Seismic Response Law of Complete Morphology of Butted Well Salt Cavern for Large-Scale Underground Energy Storage |
| title_sort | research on the seismic response law of complete morphology of butted well salt cavern for large scale underground energy storage |
| topic | underground energy storage butted well salt cavern morphology seismic forward simulation seismic reflection characteristics horizontal connection channel |
| url | https://www.mdpi.com/2076-3417/15/2/564 |
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