Study on Explosive Fracturing Mechanism of Qianjiang Shale Oil
We employed the nonlinear finite element software ANSYS LS-DYNA 19.0 to develop a coupled dynamic-static load model for shale oil reservoirs in the Qianjiang Depression through theoretical analysis and numerical simulation and to investigate an oil extraction technology by improving oil yield while...
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MDPI AG
2025-02-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/15/5/2612 |
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| author | Jing Luo Yingtao Xu Ruidi Tian Fei Sun Haitao Yu Dong Xiang Weichu Yu |
| author_facet | Jing Luo Yingtao Xu Ruidi Tian Fei Sun Haitao Yu Dong Xiang Weichu Yu |
| author_sort | Jing Luo |
| collection | DOAJ |
| description | We employed the nonlinear finite element software ANSYS LS-DYNA 19.0 to develop a coupled dynamic-static load model for shale oil reservoirs in the Qianjiang Depression through theoretical analysis and numerical simulation and to investigate an oil extraction technology by improving oil yield while maintaining environmental sustainability of Qianjiang Depression. The effects of various loading conditions, including hole size and different oxygen balance of explosives, on oil recovery efficiency during reservoir rock blasting are extensively examined. Numerical simulations reveal that NTNMT explosions transfer more energy to the reservoir rock, compared to DEGDN and TNT. Specifically, when the charging radius is set to 6 cm, NTNMT yields optimal fracture expansion and coalescence, leading to improved economic benefits for shale oil extraction. Additionally, density functional theory (DFT) simulations were conducted to analyze the decomposition processes of different oxygen balance explosive molecules within the reservoir and assess their potential pollution. The results indicate that all the explosives can degrade reservoir rocks, but the explosion of positive oxygen balance, NTNMT, exhibits the highest degradability and lowest environmental impact. |
| format | Article |
| id | doaj-art-8fec8ca17cce43b3bc5c10c62361073e |
| institution | OA Journals |
| issn | 2076-3417 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj-art-8fec8ca17cce43b3bc5c10c62361073e2025-08-20T02:05:08ZengMDPI AGApplied Sciences2076-34172025-02-01155261210.3390/app15052612Study on Explosive Fracturing Mechanism of Qianjiang Shale OilJing Luo0Yingtao Xu1Ruidi Tian2Fei Sun3Haitao Yu4Dong Xiang5Weichu Yu6College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, ChinaCollege of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, ChinaCollege of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, ChinaCollege of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, ChinaCollege of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, ChinaCollege of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, ChinaCollege of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, ChinaWe employed the nonlinear finite element software ANSYS LS-DYNA 19.0 to develop a coupled dynamic-static load model for shale oil reservoirs in the Qianjiang Depression through theoretical analysis and numerical simulation and to investigate an oil extraction technology by improving oil yield while maintaining environmental sustainability of Qianjiang Depression. The effects of various loading conditions, including hole size and different oxygen balance of explosives, on oil recovery efficiency during reservoir rock blasting are extensively examined. Numerical simulations reveal that NTNMT explosions transfer more energy to the reservoir rock, compared to DEGDN and TNT. Specifically, when the charging radius is set to 6 cm, NTNMT yields optimal fracture expansion and coalescence, leading to improved economic benefits for shale oil extraction. Additionally, density functional theory (DFT) simulations were conducted to analyze the decomposition processes of different oxygen balance explosive molecules within the reservoir and assess their potential pollution. The results indicate that all the explosives can degrade reservoir rocks, but the explosion of positive oxygen balance, NTNMT, exhibits the highest degradability and lowest environmental impact.https://www.mdpi.com/2076-3417/15/5/2612shale oilexplosive fracturingnumerical simulationoxygen balanceenvironmental contamination |
| spellingShingle | Jing Luo Yingtao Xu Ruidi Tian Fei Sun Haitao Yu Dong Xiang Weichu Yu Study on Explosive Fracturing Mechanism of Qianjiang Shale Oil Applied Sciences shale oil explosive fracturing numerical simulation oxygen balance environmental contamination |
| title | Study on Explosive Fracturing Mechanism of Qianjiang Shale Oil |
| title_full | Study on Explosive Fracturing Mechanism of Qianjiang Shale Oil |
| title_fullStr | Study on Explosive Fracturing Mechanism of Qianjiang Shale Oil |
| title_full_unstemmed | Study on Explosive Fracturing Mechanism of Qianjiang Shale Oil |
| title_short | Study on Explosive Fracturing Mechanism of Qianjiang Shale Oil |
| title_sort | study on explosive fracturing mechanism of qianjiang shale oil |
| topic | shale oil explosive fracturing numerical simulation oxygen balance environmental contamination |
| url | https://www.mdpi.com/2076-3417/15/5/2612 |
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