EGS Collab Experiment 1: SIMFIP Notch-164 GRL Paper

Characterizing the stimulation mode of a fracture is critical to assess the hydraulic efficiency and the seismic risk related to deep fluid manipulations. We have monitored the three-dimensional displacements of a fluid-driven fracture during water injections in a borehole at ~1.5 km depth in the crystalline rock of the Sanford Underground Research Facility (USA). The fracture initiates at 61% of the minimum horizontal stress by micro-shearing of the borehole on a foliation plane. As the fluid pressure increases further, borehole axial and radial displacements increase with injection time highlighting the opening and sliding of a new hydrofracture growing ~10 m away from the borehole, in accordance with the ambient normal stress regime and in alignment with the microseismicity. Our study reveals how fluid-driven fracture stimulation can be facilitated by a mixed-mode process controlled by the complex hydromechanical evolution of the growing fracture.

The data presented in this submission refer to the SIMFIP measurements and analyses of the stimulation tests conducted on the 164 ft (50 m) notch of the Sanford Underground Research Facility (SURF), during the EGS-Collab test 1. In addition to the datafiles, there is the draft of a manuscript submitted to Geophysical Research Letters (GRL).

Data and Resources

Field Value
DOI 10.15121/1737366
accessLevel public
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identifier https://data.openei.org/submissions/3877
issued 2020-09-24T06:00:00Z
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license https://creativecommons.org/licenses/by/4.0/
modified 2021-05-17T16:00:44Z
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projectLead Lauren Boyd
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projectTitle EGS Collab
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Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • anisotropy
  • borehole
  • ckan
  • displacement
  • egs
  • egs-collab
  • energy
  • experiment
  • flow-rate
  • foliation
  • fracture
  • geo
  • geophysics
  • geoss
  • geothermal
  • hydraulic
  • hydraulic-conductivity
  • hydrofracture
  • injection-test
  • micro-shearing
  • national
  • new-borehole-instrument
  • north-america
  • nucleate
  • sanford-underground-research-facility
  • seismic
  • seismicity
  • shear
  • shear-displacement
  • simfip
  • stimulation
  • stress
  • surf
  • united-states
  • wellbore
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maintainer Yves Guglielmi
maintainer_email yguglielmi@lbl.gov
metadata_created 2025-11-21T00:22:52.056114
metadata_modified 2025-11-21T00:22:52.056118
notes Characterizing the stimulation mode of a fracture is critical to assess the hydraulic efficiency and the seismic risk related to deep fluid manipulations. We have monitored the three-dimensional displacements of a fluid-driven fracture during water injections in a borehole at ~1.5 km depth in the crystalline rock of the Sanford Underground Research Facility (USA). The fracture initiates at 61% of the minimum horizontal stress by micro-shearing of the borehole on a foliation plane. As the fluid pressure increases further, borehole axial and radial displacements increase with injection time highlighting the opening and sliding of a new hydrofracture growing ~10 m away from the borehole, in accordance with the ambient normal stress regime and in alignment with the microseismicity. Our study reveals how fluid-driven fracture stimulation can be facilitated by a mixed-mode process controlled by the complex hydromechanical evolution of the growing fracture. The data presented in this submission refer to the SIMFIP measurements and analyses of the stimulation tests conducted on the 164 ft (50 m) notch of the Sanford Underground Research Facility (SURF), during the EGS-Collab test 1. In addition to the datafiles, there is the draft of a manuscript submitted to Geophysical Research Letters (GRL).
num_resources 9
num_tags 37
title EGS Collab Experiment 1: SIMFIP Notch-164 GRL Paper