EGS Collab Experiment 1: SIMFIP Notch-164 GRL Paper

Guglielmi, Yves

doi:10.15121/1737366

Title: EGS Collab Experiment 1: SIMFIP Notch-164 GRL Paper

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Abstract

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).

Authors:: Guglielmi, Yves

Publication Date:: Thu Sep 24 00:00:00 EDT 2020

Other Number(s):: 1250

DOE Contract Number:: EE0032708

Research Org.:: USDOE Geothermal Data Repository (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Geothermal Technologies Program (EE-4G)

Collaborations:: Lawrence Berkeley National Laboratory

Subject:: 15 Geothermal Energy

Keywords:: geothermal; energy; SIMFIP; New borehole instrument; hydrofracture; EGS Collab; nucleate; anisotropy; shear displacement; wellbore; experiment; stimulation; seismic; seismicity; fracture; hydraulic conductivity; stress; shear; borehole; micro-shearing; foliation; injection test; Sanford Underground Research Facility; SURF; EGS; hydraulic; geophysics; displacement; flow rate

Geolocation:: 40.408690733938,-110.784725|36.333052589625,-110.784725|36.333052589625,-114.640825|40.408690733938,-114.640825|40.408690733938,-110.784725

OSTI Identifier:: 1737366

DOI:: https://doi.org/10.15121/1737366

Project Location:

Citation Formats


                    Guglielmi, Yves. EGS Collab Experiment 1: SIMFIP Notch-164 GRL Paper.  United States: N. p., 2020. 
        Web.  doi:10.15121/1737366.

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                    Guglielmi, Yves. EGS Collab Experiment 1: SIMFIP Notch-164 GRL Paper.  United States.  doi:https://doi.org/10.15121/1737366

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                    Guglielmi, Yves. 2020.  
"EGS Collab Experiment 1: SIMFIP Notch-164 GRL Paper".  United States.  doi:https://doi.org/10.15121/1737366.  https://www.osti.gov/servlets/purl/1737366. Pub date:Thu Sep 24 00:00:00 EDT 2020

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@article{osti_1737366,

  title        = {EGS Collab Experiment 1: SIMFIP Notch-164 GRL Paper},

  author       = {Guglielmi, Yves},

  abstractNote = {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).},

  doi          = {10.15121/1737366},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Thu Sep 24 00:00:00 EDT 2020},

  month        = {Thu Sep 24 00:00:00 EDT 2020}

}

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DOI: https://doi.org/10.15121/1737366

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EGS Collab Experiment 1: SIMFIP Notch-164 GRL Paper

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