eprintid: 2448 rev_number: 8 eprint_status: archive userid: 6 dir: disk0/00/00/24/48 datestamp: 2024-07-16 08:08:03 lastmod: 2024-07-16 08:08:03 status_changed: 2024-07-16 08:08:03 type: article metadata_visibility: show creators_name: Wang, Lei creators_name: Kwiatek, Grzegorz creators_name: Rybacki, Erik creators_name: Bonnelye, Audrey creators_name: Bohnhoff, Marco creators_name: Dresen, Georg corp_creators: Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Potsdam, Germany Department of Earth Sciences, Free University Berlin, Berlin, Germany corp_creators: Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Potsdam, Germany Department of Earth Sciences, Free University Berlin, Berlin, Germany corp_creators: Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Potsdam, Germany corp_creators: Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Potsdam, Germany corp_creators: Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Potsdam, Germany Department of Earth Sciences, Free University Berlin, Berlin, Germany corp_creators: Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Potsdam, Germany Institute of Earth and Environmental Science, University of Potsdam, Potsdam, Germany title: Laboratory Study on Fluid‐Induced Fault Slip Behavior: The Role of Fluid Pressurization Rate subjects: LX subjects: RG divisions: GEO4 full_text_status: none abstract: 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 < 4 μm/s) are induced by fast fluid injection rate, whereas fault creep with slip velocity < 0.4 μm/s mainly occurs in response to slow fluid injection rate. Fluid-induced fault slip may remain mechanically stable for loading stiffness larger than fault stiffness. Independent of fault slip mode, we observed dynamic frictional weakening of the artificial fault at elevated pore pressure. Our observations highlight that varying fluid injection rates may assist in reducing potential seismic hazards of field-scale fluid injection projects. date: 2020 publication: Geophysical Research Letters volume: 47 number: 6 id_number: doi:10.1029/2019GL086627 issn: 0094-8276 official_url: https://doi.org/10.1029/2019GL086627 access_IS-EPOS: limited owner: Publisher citation: Wang, Lei and Kwiatek, Grzegorz and Rybacki, Erik and Bonnelye, Audrey and Bohnhoff, Marco and Dresen, Georg (2020) Laboratory Study on Fluid‐Induced Fault Slip Behavior: The Role of Fluid Pressurization Rate. Geophysical Research Letters, 47 (6). DOI: https://doi.org/10.1029/2019GL086627