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Anisotropy and spatial variation of relative permeability tensleep ss

DOE/BC/14897-6

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Geologyanisotropycharacterlithologicpermeabilitrelativespatialtensleepvariatiowyoming
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National Energy Technology Laboratory (NETL)about 1 year ago
EGS Collab Experiment 1: SIMFIP Notch-164 GRL PaperSource

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).

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EGSEGS CollabNew borehole instrumentSIMFIPSURFSanford Underground Research Facilityanisotropyboreholedisplacementenergyexperimentflow ratefoliationfracturegeophysicsgeothermalhydraulichydraulic conductivityhydrofractureinjection testmicro-shearingnucleateseismicseismicityshearshear displacementstimulationstresswellbore
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National Renewable Energy Laboratory (NREL)about 1 year ago
Well Logs: A Non-Invasive Approach for Elucidating the Spatial Distribution of In-Situ Stress in Deep Subsurface Geologic Formations Considered for CO2 Storage

Routine and geomechanical well logs for 3 wells— State Otsego Lake 8-15A, Lawnichak 9-33, Chester 8-16.

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DTMichigan BasinNiagaran reefSiluriananisotropyazimuthcarbonatesdelta timedipolegeomechanicslasshearsonicstresstriple combovelocitywell logs
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ZIP
National Energy Technology Laboratory (NETL)about 1 year ago