Abstract
The first experiment of the Enhanced Geothermal Systems (EGS) Collab (a.k.a Stimulation Investigations for Geothermal Modeling Analysis and Validation (SIGMA-V)) project is designed to comprehensively monitor a series of hydraulic fracture stimulations and subsequent flow tests. This experiment is planned for the 4850 Level in the Sanford Underground Research Facility (SURF), located at the former Homestake Gold Mine, in Lead, South Dakota. The target host rock for these stimulations and flow tests is a phyllite schist known as the Poorman formation. This paper discusses at a high level the engineering design for the stimulation and fracture monitoring system, the considerations for the test bed construction, and the preliminary stimulation modeling. Furthermore, this paper will highlight the intricate ways that predictive modeling can be used for testbed and stimulation design. This project is funded by the United States Department of Energy, Geothermal Technologies Office (GTO).
Original language | English |
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Title of host publication | Geothermal Energy |
Subtitle of host publication | Power To Do More - Geothermal Resources Council 2017 Annual Meeting, GRC 2017 |
Publisher | Geothermal Resources Council |
Pages | 920-933 |
Number of pages | 14 |
ISBN (Electronic) | 0934412227 |
State | Published - 2017 |
Event | Geothermal Resources Council 41st Annual Meeting - Geothermal Energy: Power To Do More, GRC 2017 - Salt Lake City, United States Duration: Oct 1 2017 → Oct 4 2017 |
Publication series
Name | Transactions - Geothermal Resources Council |
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Volume | 41 |
ISSN (Print) | 0193-5933 |
Conference
Conference | Geothermal Resources Council 41st Annual Meeting - Geothermal Energy: Power To Do More, GRC 2017 |
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Country/Territory | United States |
City | Salt Lake City |
Period | 10/1/17 → 10/4/17 |
Funding
This project is supported by the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy (EERE), Geothermal Technologies Office (GTO). We thank Jaret Heise and his staff for their ongoing support of our field activities at SURF, and Lauren Boyd and her colleagues at DOE for their strong support of this project. The first experiment of the Enhanced Geothermal Systems (EGS) Collab (a.k.a Stimulation Investigations for Geothermal Modeling Analysis and Validation (SIGMA-V)) project is designed to comprehensively monitor a series of hydraulic fracture stimulations and subsequent flow tests. This experiment is planned for the 4850 Level in the Sanford Underground Research Facility (SURF), located at the former Homestake Gold Mine, in Lead, South Dakota. The target host rock for these stimulations and flow tests is a phyllite schist known as the Poorman formation. This paper discusses at a high level the engineering design for the stimulation and fracture monitoring system, the considerations for the test bed construction, and the preliminary stimulation modeling. Furthermore, this paper will highlight the intricate ways that predictive modeling can be used for testbed and stimulation design. This project is funded by the United States Department of Energy, Geothermal Technologies Office (GTO).
Keywords
- Borehole construction
- Borehole notching
- Borehole orientation
- Collab/SIGMA-V
- EGS
- Geophysical monitoring
- Hydraulic fracture
- Meso-scale experimental design
- Numerical simulation
- Sanford Underground Research Facility
- Stimulation
- THMC modeling