@inproceedings{fb8d78011b444222b7eabc492d4545a8,
title = "The EGS collab hydrofracture experiment at the Sanford underground research facility - Campaign cross-borehole seismic characterization",
abstract = "The enhanced geothermal system (EGS) multi-laboratory and multi-university collaborative (Collab) project brings together skilled and experienced scientists and engineers in the areas of subsurface process modeling, monitoring, and a series of experiments to focus on intermediate‐scale EGS reservoir generation processes and related model validation at crystalline rock sites. Cooperative research under the EGS Collab project will provide a foundation of knowledge and modeling capability that form a bridge to meeting the challenges of EGS development and proliferation. The EGS Collab project is being performed within the re-purposed mine workings (drifts) of Sanford Underground Research Facility (SURF), located in Lead, South Dakota, USA. For the first experiment, a suite of sub-horizontal boreholes was drilled from within one of the SURF mine drifts directly into the surrounding crystalline rock formation. The suite is comprised of one stimulation well, one production well, and six monitoring wells. The goal of this experiment is to generate fractures radiating from the stimulation well that intersect the production well, and then perform flow testing of this inter-well/hydrofracture system. Stimulation and flow is monitored with micro-earthquake (MEQ) and acoustic emission (AE) instrumentation that is grouted into the monitoring wells. A fundamental component of MEQ/AE monitoring requires campaign-style cross-borehole seismic characterization. Cross-borehole techniques include compressional (P-) and Shear (S-) wave tomography. The results provide baseline P- and S-wave velocity models that are critical in calibrating hypocenter locations from MEQ/AE monitoring, and also yield elastic moduli data/constraints that will be utilized for stimulation modeling. A supplemental goal is to perform velocity change detection analysis by collecting cross-borehole P- and S-wave data between the stimulation and production wells prior and subsequent to fracture stimulation.",
keywords = "Acoustic emission, Cross-borehole seismic, EGS Collab, Hydrofracture, Micro-earthquake",
author = "{EGS Collab Team} and Schwering, {Paul C.} and Knox, {Hunter A.} and Hoots, {Charles R.} and Dorothy Linneman and Jonathan Ajo-Franklin and Bauer, {S. J.} and T. Baumgartner and K. Beckers and Blankenship, {D. A.} and A. Bonneville and L. Boyd and Brown, {S. T.} and Burghardt, {J. A.} and T. Chen and Y. Chen and K. Condon and Cook, {P. J.} and Dobson, {P. F.} and Doe, {T. W.} and Doughty, {C. A.} and D. Elsworth and J. Feldman and A. Foris and Frash, {L. P.} and Z. Frone and P. Fu and K. Gao and A. Ghassemi and H. Gudmundsdottir and Y. Guglielmi and G. Guthrie and B. Haimson and A. Hawkins and J. Heise and M. Horn and Horne, {R. N.} and J. Horner and M. Hu and H. Huang and L. Huang and K. Im and M. Ingraham and Johnson, {T. C.} and B. Johnston and S. Karra and K. Kim and King, {D. K.} and Kneafsey, {T. J.} and M. Maceira and Y. Polsky",
note = "Publisher Copyright: {\textcopyright} 2018 International Journal of Caring Sciences. All rights reserved.; Geothermal Resources Council 2018 Annual Meeting: Geothermal's Role in Today's Energy Market, GRC 2018 ; Conference date: 14-10-2018 Through 17-10-2018",
year = "2018",
language = "English",
series = "Transactions - Geothermal Resources Council",
publisher = "Geothermal Resources Council",
pages = "766--775",
booktitle = "Geothermal's Role in Today's Energy Market - Geothermal Resources Council 2018 Annual Meeting, GRC 2018",
}
