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Title: EGS Collab Earth Modeling: Integrated 3D Model of the Testbed

Abstract

The EGS Collab project is conducting a series of stimulation and interwell flow tests in an intermediate scale (~10-20 m) testbed located on the 4850 level in the Sanford Underground Research Facility (SURF) in Lead, South Dakota. The testbed consists of eight ~200 ft (~60 m) HQ-diameter (9.6 cm) boreholes that are drilled into the Poorman Formation from the western rib of the West Access Drift. Of the eight boreholes, one borehole is used as an injection/stimulation well, another sub-parallel borehole located about 10 m away from the injection well is used as a production well, and rest of the other boreholes are used as monitoring wells. For 3D visualization of the testbed as well as to provide spatially accurate and consistent parameter data for geomechanical and geophysical process modeling tasks, we are using Leapfrog Software (Seequent Limited). For analysis of fractures and creation of conditioned stochastic discrete fracture network (CS-DFN) model of the testbed, we are using FracMan (Golder Associates Inc.). As of mid-May 2019, the EGS Collab Leapfrog database contains the general layout of the drifts/shafts at the 4850 and 4100 levels; generalized geologic framework model of a domain that spans both the 4850 and 4100 levels; themore » CS-DFN of the testbed; and layouts of the EGS Collab testbed boreholes, kISMET testbed boreholes, and other existing boreholes at the 4850 level. This information has been obtained from the SURF Vulcan database, detailed laser scan and point surveys of borehole collar locations, directional surveys of borehole trajectories, and mapping of features in the drifts, boreholes, and cores. Similarly, other types of data that have been incorporated into the Leapfrog database include static features of the testbed such as natural discontinuities (e.g., fractures, weeps), location of monitoring instruments, and stimulation notches. Baseline geophysical characterization results (e.g., seismic, ERT, temperature, etc.) are also imported into the Leapfrog database. The location and size of packers, various point-source signals detected during stimulation and flow tests (e.g., temperature anomalies, micro-earthquake events, etc.) are also compiled in the database. All feature locations are reported using the local Homestake Mine coordinate system. In this paper, we present some of the geostructural characteristics as well as the status of the testbed as represented by Leapfrog/FracMan database/visualizations.« less

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1];  [2];  [3];  [3];  [3];  [3];  [3];  [4];  [4];  [5];  [5];  [6];  [7];  [4];  [5];  [5]
  1. Idaho National Laboratory
  2. Mattson Hydrology LLC
  3. LBNL
  4. SNL
  5. PNNL
  6. South Dakota School of Mines and Technology
  7. TDoeGeo
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1564259
Report Number(s):
INL/CON-19-53232-Rev002
DOE Contract Number:  
DE-AC07-05ID14517
Resource Type:
Conference
Resource Relation:
Conference: GRC Annual Meeting & Expo, Palm Springs, California, USA, 09/15/2019 - 09/18/2019
Country of Publication:
United States
Language:
English
Subject:
15 - GEOTHERMAL ENERGY; EGS Collab; SURF; Homestake Mine; geothermal; earth modeling

Citation Formats

Neupane, Ghanashyam Hari, Podgorney, Robert K, Huang, Hai, Mattson, Earl D, Kneafsey, Timothy J., Dobson, Patrick F., Schoenball, Martin, Ajo-Franklin, Jonathan B., Ulrich, Craig, Schwering, Paul C., Knox, Hunter A., Johnson, Timothy C., White, Mark D., Roggenthen, William, Doe, Thomas W., Blankenship, Douglas A., Vermeul, Vince R., and Strickland, Christopher E. EGS Collab Earth Modeling: Integrated 3D Model of the Testbed. United States: N. p., 2019. Web.
Neupane, Ghanashyam Hari, Podgorney, Robert K, Huang, Hai, Mattson, Earl D, Kneafsey, Timothy J., Dobson, Patrick F., Schoenball, Martin, Ajo-Franklin, Jonathan B., Ulrich, Craig, Schwering, Paul C., Knox, Hunter A., Johnson, Timothy C., White, Mark D., Roggenthen, William, Doe, Thomas W., Blankenship, Douglas A., Vermeul, Vince R., & Strickland, Christopher E. EGS Collab Earth Modeling: Integrated 3D Model of the Testbed. United States.
Neupane, Ghanashyam Hari, Podgorney, Robert K, Huang, Hai, Mattson, Earl D, Kneafsey, Timothy J., Dobson, Patrick F., Schoenball, Martin, Ajo-Franklin, Jonathan B., Ulrich, Craig, Schwering, Paul C., Knox, Hunter A., Johnson, Timothy C., White, Mark D., Roggenthen, William, Doe, Thomas W., Blankenship, Douglas A., Vermeul, Vince R., and Strickland, Christopher E. Sun . "EGS Collab Earth Modeling: Integrated 3D Model of the Testbed". United States. https://www.osti.gov/servlets/purl/1564259.
@article{osti_1564259,
title = {EGS Collab Earth Modeling: Integrated 3D Model of the Testbed},
author = {Neupane, Ghanashyam Hari and Podgorney, Robert K and Huang, Hai and Mattson, Earl D and Kneafsey, Timothy J. and Dobson, Patrick F. and Schoenball, Martin and Ajo-Franklin, Jonathan B. and Ulrich, Craig and Schwering, Paul C. and Knox, Hunter A. and Johnson, Timothy C. and White, Mark D. and Roggenthen, William and Doe, Thomas W. and Blankenship, Douglas A. and Vermeul, Vince R. and Strickland, Christopher E.},
abstractNote = {The EGS Collab project is conducting a series of stimulation and interwell flow tests in an intermediate scale (~10-20 m) testbed located on the 4850 level in the Sanford Underground Research Facility (SURF) in Lead, South Dakota. The testbed consists of eight ~200 ft (~60 m) HQ-diameter (9.6 cm) boreholes that are drilled into the Poorman Formation from the western rib of the West Access Drift. Of the eight boreholes, one borehole is used as an injection/stimulation well, another sub-parallel borehole located about 10 m away from the injection well is used as a production well, and rest of the other boreholes are used as monitoring wells. For 3D visualization of the testbed as well as to provide spatially accurate and consistent parameter data for geomechanical and geophysical process modeling tasks, we are using Leapfrog Software (Seequent Limited). For analysis of fractures and creation of conditioned stochastic discrete fracture network (CS-DFN) model of the testbed, we are using FracMan (Golder Associates Inc.). As of mid-May 2019, the EGS Collab Leapfrog database contains the general layout of the drifts/shafts at the 4850 and 4100 levels; generalized geologic framework model of a domain that spans both the 4850 and 4100 levels; the CS-DFN of the testbed; and layouts of the EGS Collab testbed boreholes, kISMET testbed boreholes, and other existing boreholes at the 4850 level. This information has been obtained from the SURF Vulcan database, detailed laser scan and point surveys of borehole collar locations, directional surveys of borehole trajectories, and mapping of features in the drifts, boreholes, and cores. Similarly, other types of data that have been incorporated into the Leapfrog database include static features of the testbed such as natural discontinuities (e.g., fractures, weeps), location of monitoring instruments, and stimulation notches. Baseline geophysical characterization results (e.g., seismic, ERT, temperature, etc.) are also imported into the Leapfrog database. The location and size of packers, various point-source signals detected during stimulation and flow tests (e.g., temperature anomalies, micro-earthquake events, etc.) are also compiled in the database. All feature locations are reported using the local Homestake Mine coordinate system. In this paper, we present some of the geostructural characteristics as well as the status of the testbed as represented by Leapfrog/FracMan database/visualizations.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {9}
}

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