Experimental research of novel true triaxial hydrothermal phase change impact fracturing
When extracting coal-bed methane (CBM) from deep ground, conventional hydraulic fracturing struggled to expand fractures due to both inadequate pressure and the water-lock phenomenon, while burgeoning fracturing techniques were unable to provide both high pressure and impact stress. The hydrothermal...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-07-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509523010124 |
| _version_ | 1827216828284272640 |
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| author | Shaobin Hu Xiaofei Wang Enyuan Wang |
| author_facet | Shaobin Hu Xiaofei Wang Enyuan Wang |
| author_sort | Shaobin Hu |
| collection | DOAJ |
| description | When extracting coal-bed methane (CBM) from deep ground, conventional hydraulic fracturing struggled to expand fractures due to both inadequate pressure and the water-lock phenomenon, while burgeoning fracturing techniques were unable to provide both high pressure and impact stress. The hydrothermal phase change impact fracturing technology can instantaneously discharge high-pressure thermal fluid and generate impact stress to volumetric fracturing. In order to research the fracturing mechanism of the new fracturing strategy, a separately designed experimental system was utilised for high-pressure thermohydraulic fracturing at different release pressures and different peripheral pressures. The experimental findings: (1) The pressurisation profile in the reactor was divided into five stages: accelerated reaction process, reaction homogeneity process, deceleration process, pressure relief shock stage and residual pressure seam formation process; (2) High-pressure hydrothermal fracture produces both radial and tearing cracks, with radial cracks being the main cracks; (3) The dimension of the fractal can be used as a damage variable to describe both the fracture morphology and the degree of damage. |
| first_indexed | 2024-03-08T19:17:56Z |
| format | Article |
| id | doaj.art-c73e708e41a248fb98dcc2405e1a6ba5 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2025-03-21T15:09:19Z |
| publishDate | 2024-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-c73e708e41a248fb98dcc2405e1a6ba52024-06-20T06:49:49ZengElsevierCase Studies in Construction Materials2214-50952024-07-0120e02831Experimental research of novel true triaxial hydrothermal phase change impact fracturingShaobin Hu0Xiaofei Wang1Enyuan Wang2Tunnel and Underground Engineering Institute, College of Civil and Transportation Engineering, HoHai University, Nanjing, Jiangsu, 210098, China; Corresponding authors.School of Safety Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China; Corresponding authors.School of Safety Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, ChinaWhen extracting coal-bed methane (CBM) from deep ground, conventional hydraulic fracturing struggled to expand fractures due to both inadequate pressure and the water-lock phenomenon, while burgeoning fracturing techniques were unable to provide both high pressure and impact stress. The hydrothermal phase change impact fracturing technology can instantaneously discharge high-pressure thermal fluid and generate impact stress to volumetric fracturing. In order to research the fracturing mechanism of the new fracturing strategy, a separately designed experimental system was utilised for high-pressure thermohydraulic fracturing at different release pressures and different peripheral pressures. The experimental findings: (1) The pressurisation profile in the reactor was divided into five stages: accelerated reaction process, reaction homogeneity process, deceleration process, pressure relief shock stage and residual pressure seam formation process; (2) High-pressure hydrothermal fracture produces both radial and tearing cracks, with radial cracks being the main cracks; (3) The dimension of the fractal can be used as a damage variable to describe both the fracture morphology and the degree of damage.http://www.sciencedirect.com/science/article/pii/S2214509523010124Hydrothermal impact fracturingFracture complexityFracture mechanismFractal dimension |
| spellingShingle | Shaobin Hu Xiaofei Wang Enyuan Wang Experimental research of novel true triaxial hydrothermal phase change impact fracturing Case Studies in Construction Materials Hydrothermal impact fracturing Fracture complexity Fracture mechanism Fractal dimension |
| title | Experimental research of novel true triaxial hydrothermal phase change impact fracturing |
| title_full | Experimental research of novel true triaxial hydrothermal phase change impact fracturing |
| title_fullStr | Experimental research of novel true triaxial hydrothermal phase change impact fracturing |
| title_full_unstemmed | Experimental research of novel true triaxial hydrothermal phase change impact fracturing |
| title_short | Experimental research of novel true triaxial hydrothermal phase change impact fracturing |
| title_sort | experimental research of novel true triaxial hydrothermal phase change impact fracturing |
| topic | Hydrothermal impact fracturing Fracture complexity Fracture mechanism Fractal dimension |
| url | http://www.sciencedirect.com/science/article/pii/S2214509523010124 |
| work_keys_str_mv | AT shaobinhu experimentalresearchofnoveltruetriaxialhydrothermalphasechangeimpactfracturing AT xiaofeiwang experimentalresearchofnoveltruetriaxialhydrothermalphasechangeimpactfracturing AT enyuanwang experimentalresearchofnoveltruetriaxialhydrothermalphasechangeimpactfracturing |