Research on horizontal multi-step cavity construction for salt cavern gas storage based on experiments
ObjectiveGiven that most salt rock strata in China consist of thin-layered salt formations, conventional single-well and single-cavity construction technologies are no longer adequate for the efficient construction of large-size salt cavities. In this context, the application of horizontal multi-ste...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | Chinese |
| Published: |
Editorial Office of Oil & Gas Storage and Transportation
2025-06-01
|
| Series: | You-qi chuyun |
| Subjects: | |
| Online Access: | https://yqcy.pipechina.com.cn/article/doi/10.6047/j.issn.1000-8241.2025.06.008 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1839645792925646848 |
|---|---|
| author | Jiasong CHEN Xuefeng BAI Guijiu WANG Lianbin ZHAO Jun LU Lilin FAN Haosheng LIU Luokun XIAO |
| author_facet | Jiasong CHEN Xuefeng BAI Guijiu WANG Lianbin ZHAO Jun LU Lilin FAN Haosheng LIU Luokun XIAO |
| author_sort | Jiasong CHEN |
| collection | DOAJ |
| description | ObjectiveGiven that most salt rock strata in China consist of thin-layered salt formations, conventional single-well and single-cavity construction technologies are no longer adequate for the efficient construction of large-size salt cavities. In this context, the application of horizontal multi-step cavity-building technology for salt cavern gas storage can enhance the construction of salt cavities with expanded volumes in salt rock strata of limited thickness. MethodsThis study explored the influence of key parameters on the final shapes of cavities created through the horizontal multi-step cavity-building approach and analyzed both the cavity shape and the construction process from an engineering perspective, thus presenting recommended values for these key parameters. A physical simulation experimental setup was designed to examine cavity expansion patterns during horizontal multi-step cavity construction. Subsequent experiments incorporated various cavity-building parameters to generate horizontal cavities of different shapes. Finally, 3D scanning technology was employed to create complete 3D cavity models based on the cavities obtained from the experiments through mirroring operations. ResultsThe following results were derived from analyzing these 3D cavity models corresponding to various cavity-building parameters. For cavities with equal volumes, variations in water injection flow rates had a significant influence on their height, length, and maximum width. Tubing withdrawal distances had a major impact on the shape of the cavity roofs, while their effect on the overall size of the cavities was relatively minor. Additionally, the air cushion used during cavity construction to protect the roofs resulted in “flat top” shapes, which not only affected the stability of the cavities but also increased the economic costs for cavity construction. ConclusionWater injection rates ranging from 160 m3/h to 240 m3/h are considered rational for horizontal multi-step cavity building. It is recommended to use small tubing withdrawal distances. Additionally, continuous injection of dissolution inhibitors during construction for cavity roof protection is not advised. The research results offer valuable references and guidance for shape design and process parameter optimization of cavities using the horizontal multi-step construction approach for salt cavern gas storage. |
| format | Article |
| id | doaj-art-00bd9c3c04e24c48bcc621fc7487f7f2 |
| institution | Matheson Library |
| issn | 1000-8241 |
| language | zho |
| publishDate | 2025-06-01 |
| publisher | Editorial Office of Oil & Gas Storage and Transportation |
| record_format | Article |
| series | You-qi chuyun |
| spelling | doaj-art-00bd9c3c04e24c48bcc621fc7487f7f22025-07-01T08:57:44ZzhoEditorial Office of Oil & Gas Storage and TransportationYou-qi chuyun1000-82412025-06-0144668569210.6047/j.issn.1000-8241.2025.06.008202406022Research on horizontal multi-step cavity construction for salt cavern gas storage based on experimentsJiasong CHEN0Xuefeng BAI1Guijiu WANG2Lianbin ZHAO3Jun LU4Lilin FAN5Haosheng LIU6Luokun XIAO7PipeChina Energy Storage Technology Co., Ltd.PipeChina Energy Storage Technology Co., Ltd.PipeChina Energy Storage Technology Co., Ltd.PipeChina Energy Storage Technology Co., Ltd.PipeChina Energy Storage Technology Co., Ltd.PipeChina Energy Storage Technology Co., Ltd.PipeChina Energy Storage Technology Co., Ltd.PipeChina Energy Storage Technology Co., Ltd.ObjectiveGiven that most salt rock strata in China consist of thin-layered salt formations, conventional single-well and single-cavity construction technologies are no longer adequate for the efficient construction of large-size salt cavities. In this context, the application of horizontal multi-step cavity-building technology for salt cavern gas storage can enhance the construction of salt cavities with expanded volumes in salt rock strata of limited thickness. MethodsThis study explored the influence of key parameters on the final shapes of cavities created through the horizontal multi-step cavity-building approach and analyzed both the cavity shape and the construction process from an engineering perspective, thus presenting recommended values for these key parameters. A physical simulation experimental setup was designed to examine cavity expansion patterns during horizontal multi-step cavity construction. Subsequent experiments incorporated various cavity-building parameters to generate horizontal cavities of different shapes. Finally, 3D scanning technology was employed to create complete 3D cavity models based on the cavities obtained from the experiments through mirroring operations. ResultsThe following results were derived from analyzing these 3D cavity models corresponding to various cavity-building parameters. For cavities with equal volumes, variations in water injection flow rates had a significant influence on their height, length, and maximum width. Tubing withdrawal distances had a major impact on the shape of the cavity roofs, while their effect on the overall size of the cavities was relatively minor. Additionally, the air cushion used during cavity construction to protect the roofs resulted in “flat top” shapes, which not only affected the stability of the cavities but also increased the economic costs for cavity construction. ConclusionWater injection rates ranging from 160 m3/h to 240 m3/h are considered rational for horizontal multi-step cavity building. It is recommended to use small tubing withdrawal distances. Additionally, continuous injection of dissolution inhibitors during construction for cavity roof protection is not advised. The research results offer valuable references and guidance for shape design and process parameter optimization of cavities using the horizontal multi-step construction approach for salt cavern gas storage.https://yqcy.pipechina.com.cn/article/doi/10.6047/j.issn.1000-8241.2025.06.008gas storagelayered salt rockhorizontal multi-step construction approachcavity building parameterscavity expansion patterns3d cavity models |
| spellingShingle | Jiasong CHEN Xuefeng BAI Guijiu WANG Lianbin ZHAO Jun LU Lilin FAN Haosheng LIU Luokun XIAO Research on horizontal multi-step cavity construction for salt cavern gas storage based on experiments You-qi chuyun gas storage layered salt rock horizontal multi-step construction approach cavity building parameters cavity expansion patterns 3d cavity models |
| title | Research on horizontal multi-step cavity construction for salt cavern gas storage based on experiments |
| title_full | Research on horizontal multi-step cavity construction for salt cavern gas storage based on experiments |
| title_fullStr | Research on horizontal multi-step cavity construction for salt cavern gas storage based on experiments |
| title_full_unstemmed | Research on horizontal multi-step cavity construction for salt cavern gas storage based on experiments |
| title_short | Research on horizontal multi-step cavity construction for salt cavern gas storage based on experiments |
| title_sort | research on horizontal multi step cavity construction for salt cavern gas storage based on experiments |
| topic | gas storage layered salt rock horizontal multi-step construction approach cavity building parameters cavity expansion patterns 3d cavity models |
| url | https://yqcy.pipechina.com.cn/article/doi/10.6047/j.issn.1000-8241.2025.06.008 |
| work_keys_str_mv | AT jiasongchen researchonhorizontalmultistepcavityconstructionforsaltcaverngasstoragebasedonexperiments AT xuefengbai researchonhorizontalmultistepcavityconstructionforsaltcaverngasstoragebasedonexperiments AT guijiuwang researchonhorizontalmultistepcavityconstructionforsaltcaverngasstoragebasedonexperiments AT lianbinzhao researchonhorizontalmultistepcavityconstructionforsaltcaverngasstoragebasedonexperiments AT junlu researchonhorizontalmultistepcavityconstructionforsaltcaverngasstoragebasedonexperiments AT lilinfan researchonhorizontalmultistepcavityconstructionforsaltcaverngasstoragebasedonexperiments AT haoshengliu researchonhorizontalmultistepcavityconstructionforsaltcaverngasstoragebasedonexperiments AT luokunxiao researchonhorizontalmultistepcavityconstructionforsaltcaverngasstoragebasedonexperiments |