Laboratory Study on the Effect of Fluid Pressurization Rate on Fracture Instability
Fluid injection-induced earthquakes have been a scientific and social issue of wide concern, and fluid pressurization rate may be an important inducement. Therefore, a series of stepwise and conventional injection-induced shear tests were carried out under different fluid pressurization rates and ef...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2021/6084032 |
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| _version_ | 1850177396683046912 |
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| author | Xinyao Wang Quanchen Gao Xiao Li Dianzhu Liu |
| author_facet | Xinyao Wang Quanchen Gao Xiao Li Dianzhu Liu |
| author_sort | Xinyao Wang |
| collection | DOAJ |
| description | Fluid injection-induced earthquakes have been a scientific and social issue of wide concern, and fluid pressurization rate may be an important inducement. Therefore, a series of stepwise and conventional injection-induced shear tests were carried out under different fluid pressurization rates and effective normal stresses. The results show that the magnitude of fluid pressure is the main factor controlling the initiation of fracture slipping. The contribution of fluid pressure heterogeneity and permeability evolution on the initiation of fracture slipping is different with the increase of fluid pressurization rate. When the fluid pressurization rate is small, permeability evolution plays a dominant role. On the contrary, the fluid pressure heterogeneity plays a dominant role. The increase of fluid pressurization rate may lead to the transition from creep slip mode to slow stick-slip mode. Under the laboratory scale, the fluid pressure heterogeneity causes the coulomb failure stress to increase by about one times than the predicted value at the initiation of fracture slipping, and the coulomb stress increment threshold of 1.65 MPa is disadvantageous to the fracture stability. |
| format | Article |
| id | doaj-art-beef0c0223d349e59c0f9bc75bbc8277 |
| institution | OA Journals |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-beef0c0223d349e59c0f9bc75bbc82772025-08-20T02:18:58ZengWileyGeofluids1468-81151468-81232021-01-01202110.1155/2021/60840326084032Laboratory Study on the Effect of Fluid Pressurization Rate on Fracture InstabilityXinyao Wang0Quanchen Gao1Xiao Li2Dianzhu Liu3School of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing), Beijing 100083, ChinaSchool of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing), Beijing 100083, ChinaKey Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, ChinaSchool of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing), Beijing 100083, ChinaFluid injection-induced earthquakes have been a scientific and social issue of wide concern, and fluid pressurization rate may be an important inducement. Therefore, a series of stepwise and conventional injection-induced shear tests were carried out under different fluid pressurization rates and effective normal stresses. The results show that the magnitude of fluid pressure is the main factor controlling the initiation of fracture slipping. The contribution of fluid pressure heterogeneity and permeability evolution on the initiation of fracture slipping is different with the increase of fluid pressurization rate. When the fluid pressurization rate is small, permeability evolution plays a dominant role. On the contrary, the fluid pressure heterogeneity plays a dominant role. The increase of fluid pressurization rate may lead to the transition from creep slip mode to slow stick-slip mode. Under the laboratory scale, the fluid pressure heterogeneity causes the coulomb failure stress to increase by about one times than the predicted value at the initiation of fracture slipping, and the coulomb stress increment threshold of 1.65 MPa is disadvantageous to the fracture stability.http://dx.doi.org/10.1155/2021/6084032 |
| spellingShingle | Xinyao Wang Quanchen Gao Xiao Li Dianzhu Liu Laboratory Study on the Effect of Fluid Pressurization Rate on Fracture Instability Geofluids |
| title | Laboratory Study on the Effect of Fluid Pressurization Rate on Fracture Instability |
| title_full | Laboratory Study on the Effect of Fluid Pressurization Rate on Fracture Instability |
| title_fullStr | Laboratory Study on the Effect of Fluid Pressurization Rate on Fracture Instability |
| title_full_unstemmed | Laboratory Study on the Effect of Fluid Pressurization Rate on Fracture Instability |
| title_short | Laboratory Study on the Effect of Fluid Pressurization Rate on Fracture Instability |
| title_sort | laboratory study on the effect of fluid pressurization rate on fracture instability |
| url | http://dx.doi.org/10.1155/2021/6084032 |
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