Injection-induced slip heterogeneity on faults in shale reservoirs
Managing fluid stimulation protocols is an effective means to mitigate the risk of injection-induced earthquakes during shale gas development. The success of these protocols is dependent on our understanding of fluid pressure heterogeneity and the associated inhomogeneous slip on critically stressed...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Online Access: | https://hdl.handle.net/10356/160875 |
| _version_ | 1811683334165626880 |
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| author | Jia, Yunzhong Wu, Wei Kong, Xiang-Zhao |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Jia, Yunzhong Wu, Wei Kong, Xiang-Zhao |
| author_sort | Jia, Yunzhong |
| collection | NTU |
| description | Managing fluid stimulation protocols is an effective means to mitigate the risk of injection-induced earthquakes during shale gas development. The success of these protocols is dependent on our understanding of fluid pressure heterogeneity and the associated inhomogeneous slip on critically stressed faults. Here we show the evolution of velocity-weakening zone on a simulated fault, derived from fluid injection and velocity stepped experiments, and the corresponding non-uniform fluid pressure distribution, recovered from coupled hydro-mechanical simulations. Our results indicate that the sharp extension of velocity-weakening zone occurs before the nucleation of fault rupture, which could be an indicator to avoid the reactivation of other fault patches beyond the stimulated zone. The dynamic rupture is estimated to extend much faster than the maximum speed of the velocity-weakening zone front. We infer that the velocity-weakening zone may further expand and fully control the fault behavior after multiple slip events. |
| first_indexed | 2024-10-01T04:11:05Z |
| format | Journal Article |
| id | ntu-10356/160875 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:11:05Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1608752022-08-05T01:53:41Z Injection-induced slip heterogeneity on faults in shale reservoirs Jia, Yunzhong Wu, Wei Kong, Xiang-Zhao School of Civil and Environmental Engineering Engineering::Civil engineering Injection-Induced Seismicity Slip Heterogeneity Managing fluid stimulation protocols is an effective means to mitigate the risk of injection-induced earthquakes during shale gas development. The success of these protocols is dependent on our understanding of fluid pressure heterogeneity and the associated inhomogeneous slip on critically stressed faults. Here we show the evolution of velocity-weakening zone on a simulated fault, derived from fluid injection and velocity stepped experiments, and the corresponding non-uniform fluid pressure distribution, recovered from coupled hydro-mechanical simulations. Our results indicate that the sharp extension of velocity-weakening zone occurs before the nucleation of fault rupture, which could be an indicator to avoid the reactivation of other fault patches beyond the stimulated zone. The dynamic rupture is estimated to extend much faster than the maximum speed of the velocity-weakening zone front. We infer that the velocity-weakening zone may further expand and fully control the fault behavior after multiple slip events. Nanyang Technological University Wei Wu gratefully acknowledges the support of Start-up Grant from Nanyang Technological University, Singapore. 2022-08-05T01:53:41Z 2022-08-05T01:53:41Z 2020 Journal Article Jia, Y., Wu, W. & Kong, X. (2020). Injection-induced slip heterogeneity on faults in shale reservoirs. International Journal of Rock Mechanics and Mining Sciences, 131, 104363-. https://dx.doi.org/10.1016/j.ijrmms.2020.104363 1365-1609 https://hdl.handle.net/10356/160875 10.1016/j.ijrmms.2020.104363 2-s2.0-85084673172 131 104363 en International Journal of Rock Mechanics and Mining Sciences © 2020 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Civil engineering Injection-Induced Seismicity Slip Heterogeneity Jia, Yunzhong Wu, Wei Kong, Xiang-Zhao Injection-induced slip heterogeneity on faults in shale reservoirs |
| title | Injection-induced slip heterogeneity on faults in shale reservoirs |
| title_full | Injection-induced slip heterogeneity on faults in shale reservoirs |
| title_fullStr | Injection-induced slip heterogeneity on faults in shale reservoirs |
| title_full_unstemmed | Injection-induced slip heterogeneity on faults in shale reservoirs |
| title_short | Injection-induced slip heterogeneity on faults in shale reservoirs |
| title_sort | injection induced slip heterogeneity on faults in shale reservoirs |
| topic | Engineering::Civil engineering Injection-Induced Seismicity Slip Heterogeneity |
| url | https://hdl.handle.net/10356/160875 |
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