Linking microearthquakes to fracture permeability change: The role of surface roughness
Abstract Despite its importance, the relation between microearthquakes (MEQs) and changes in hydraulic properties during hydraulic stimulation of a fractured reservoir has rarely been explored, and it is still not well understood. To investigate this relation, we first formulate a plausible scale de...
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| Format: | Article |
| Language: | English |
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Wiley
2016-07-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1002/2016GL069478 |
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| author | Takuya Ishibashi Noriaki Watanabe Hiroshi Asanuma Noriyoshi Tsuchiya |
| author_facet | Takuya Ishibashi Noriaki Watanabe Hiroshi Asanuma Noriyoshi Tsuchiya |
| author_sort | Takuya Ishibashi |
| collection | DOAJ |
| description | Abstract Despite its importance, the relation between microearthquakes (MEQs) and changes in hydraulic properties during hydraulic stimulation of a fractured reservoir has rarely been explored, and it is still not well understood. To investigate this relation, we first formulate a plausible scale dependence, where fracture length and shear displacement are variables, for channeling flow through heterogeneous aperture distributions for joints and faults. By combining this formulation with the concept of the seismic moment, we derive quantitative relations between the moment magnitude (Mw) of MEQs and the fracture permeability change in the directions orthogonal to (kfault,⊥/kjoint) and parallel to (kfault,∥/kjoint) the shear displacement, in the form kfault,⊥/kjoint=116.4×100.46Mw and kfault,///kjoint=13.1×100.46Mw. Despite the simplicity of the derivation, these relations have the potential to explain the results of field experiments on hydraulic stimulation, such as the enhanced geothermal systems at Soultz‐sous‐Fôret and Basel. |
| format | Article |
| id | doaj-art-d7be877f36664e2e9b306f4038d445d6 |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2016-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-d7be877f36664e2e9b306f4038d445d62025-08-20T02:31:41ZengWileyGeophysical Research Letters0094-82761944-80072016-07-0143147486749310.1002/2016GL069478Linking microearthquakes to fracture permeability change: The role of surface roughnessTakuya Ishibashi0Noriaki Watanabe1Hiroshi Asanuma2Noriyoshi Tsuchiya3Fukushima Renewable Energy Institute National Institute of Advanced Industrial Science and Technology Koriyama JapanGraduate School of Environmental Studies Tohoku University Sendai JapanFukushima Renewable Energy Institute National Institute of Advanced Industrial Science and Technology Koriyama JapanGraduate School of Environmental Studies Tohoku University Sendai JapanAbstract Despite its importance, the relation between microearthquakes (MEQs) and changes in hydraulic properties during hydraulic stimulation of a fractured reservoir has rarely been explored, and it is still not well understood. To investigate this relation, we first formulate a plausible scale dependence, where fracture length and shear displacement are variables, for channeling flow through heterogeneous aperture distributions for joints and faults. By combining this formulation with the concept of the seismic moment, we derive quantitative relations between the moment magnitude (Mw) of MEQs and the fracture permeability change in the directions orthogonal to (kfault,⊥/kjoint) and parallel to (kfault,∥/kjoint) the shear displacement, in the form kfault,⊥/kjoint=116.4×100.46Mw and kfault,///kjoint=13.1×100.46Mw. Despite the simplicity of the derivation, these relations have the potential to explain the results of field experiments on hydraulic stimulation, such as the enhanced geothermal systems at Soultz‐sous‐Fôret and Basel.https://doi.org/10.1002/2016GL069478induced microearthquakesrock fracturepermeabilityshear displacementscale dependencychanneling flow |
| spellingShingle | Takuya Ishibashi Noriaki Watanabe Hiroshi Asanuma Noriyoshi Tsuchiya Linking microearthquakes to fracture permeability change: The role of surface roughness Geophysical Research Letters induced microearthquakes rock fracture permeability shear displacement scale dependency channeling flow |
| title | Linking microearthquakes to fracture permeability change: The role of surface roughness |
| title_full | Linking microearthquakes to fracture permeability change: The role of surface roughness |
| title_fullStr | Linking microearthquakes to fracture permeability change: The role of surface roughness |
| title_full_unstemmed | Linking microearthquakes to fracture permeability change: The role of surface roughness |
| title_short | Linking microearthquakes to fracture permeability change: The role of surface roughness |
| title_sort | linking microearthquakes to fracture permeability change the role of surface roughness |
| topic | induced microearthquakes rock fracture permeability shear displacement scale dependency channeling flow |
| url | https://doi.org/10.1002/2016GL069478 |
| work_keys_str_mv | AT takuyaishibashi linkingmicroearthquakestofracturepermeabilitychangetheroleofsurfaceroughness AT noriakiwatanabe linkingmicroearthquakestofracturepermeabilitychangetheroleofsurfaceroughness AT hiroshiasanuma linkingmicroearthquakestofracturepermeabilitychangetheroleofsurfaceroughness AT noriyoshitsuchiya linkingmicroearthquakestofracturepermeabilitychangetheroleofsurfaceroughness |