In Situ Continuous Monitoring of Borehole Displacements Induced by Stimulated Hydrofracture Growth
نویسندگان
چکیده
We provide direct observations of the three-dimensional displacements a fluid-driven fracture during water injections in borehole at ?1.5 km depth crystalline rock Sanford Underground Research Facility (USA). Micro-shearing initiates on foliation plane 61% minimum principal stress ?3. As fluid pressure increases further up to 112% ?3, axial and radial increase with injection time highlighting opening sliding new hydrofracture growing ?10 m away from borehole, accordance ambient normal regime alignment microseismicity. Our study reveals how important it is consider monitoring zonal deformation conjunction flow better manage complex hydromechanical evolution fracture.
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ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 2021
ISSN: ['1944-8007', '0094-8276']
DOI: https://doi.org/10.1029/2020gl090782