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Journal Article

Injection‐induced seismic moment release and laboratory fault slip: Implications for fluid‐induced seismicity

Authors
/persons/resource/wanglei

Wang,  Lei
4.2 Geomechanics and Scientific Drilling, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/kwiatek

Kwiatek,  G.
4.2 Geomechanics and Scientific Drilling, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/uddi

Rybacki,  Erik
4.2 Geomechanics and Scientific Drilling, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/bohnhoff

Bohnhoff,  M.
4.2 Geomechanics and Scientific Drilling, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/dre

Dresen,  G.
4.2 Geomechanics and Scientific Drilling, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

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Fulltext (public)

5003666.pdf
(Publisher version), 2MB

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Citation

Wang, L., Kwiatek, G., Rybacki, E., Bohnhoff, M., Dresen, G. (2020): Injection‐induced seismic moment release and laboratory fault slip: Implications for fluid‐induced seismicity. - Geophysical Research Letters, 47, 22, e2020GL089576.
https://doi.org/10.1029/2020GL089576


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5003666
Abstract
Understanding injection‐induced seismic moment release with operational parameters is crucial for early identification of possible seismic hazards associated with fluid‐injection projects. We conducted laboratory fluid‐injection experiments on permeable sandstone samples containing a critically stressed fault at different fluid pressurization rates. The observed fluid‐induced fault deformation is dominantly aseismic. Fluid‐induced stick‐slip and fault creep reveal that total seismic moment release of acoustic emission (AE) events are related to total injected volume, independent of respective fault slip behavior. Seismic moment release rate of AE scales with measured fault slip velocity. For injection‐induced fault slip in a homogeneous pressurized region, released moment shows a linear scaling with injected volume for stable slip (steady slip and fault creep) while we find a cubic relation for dynamic slip. Our results highlight that monitoring evolution of seismic moment release with injected volume in some cases may assist in discriminating between stable slip and unstable runaway ruptures.