Laboratory Study on Fluid‐Induced Fault Slip Behavior: The Role of Fluid Pressurization Rate

Understanding the physical mechanisms governing fluid‐induced fault slip is important for improved mitigation of seismic risks associated with large‐scale fluid injection. We conducted fluid‐induced fault slip experiments in the laboratory on critically stressed saw‐cut sandstone samples with high p...

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Bibliographic Details
Published in:Geophysical research letters 2020-03, Vol.47 (6), p.n/a
Main Authors: Wang, Lei, Kwiatek, Grzegorz, Rybacki, Erik, Bonnelye, Audrey, Bohnhoff, Marco, Dresen, Georg
Format: Article
Language:English
Subjects:
Coefficient of friction
Earthquakes
Enhanced geothermal systems
fault creep
Fault lines
fault slip
Fluid injection
Fluid pressure
fluid pressurization rate
Geological hazards
induced seismicity
Injection
Laboratories
Laboratory tests
Man-induced effects
Mitigation
Permeability
Pore pressure
Pressure
Pressurization
Sandstone
Sedimentary rocks
Seismic activity
Seismic hazard
Seismicity
Slip velocity
Solifluction
stick‐slip
Stiffness
Velocity
Wastewater
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Summary:Understanding the physical mechanisms governing fluid‐induced fault slip is important for improved mitigation of seismic risks associated with large‐scale fluid injection. We conducted fluid‐induced fault slip experiments in the laboratory on critically stressed saw‐cut sandstone samples with high permeability using different fluid pressurization rates. Our experimental results demonstrate that fault slip behavior is governed by fluid pressurization rate rather than injection pressure. Slow stick‐slip episodes (peak slip velocity 
ISSN:0094-8276
1944-8007
DOI:10.1029/2019GL086627