Utilizing supercritical geothermal systems: a review of past ventures and ongoing research activities

T Reinsch, P Dobson, H Asanuma, E Huenges… - Geothermal …, 2017 - Springer
Supercritical geothermal systems are very high-temperature geothermal systems that are
located at depths near or below the brittle–ductile transition zone in the crust where the …

Supercritical geothermal systems-a review of past studies and ongoing research activities

P Dobson, H Asanuma, E Huenges, F Poletto… - 42nd Workshop on …, 2017 - hal.science
Supercritical geothermal systems are very high temperature geothermal systems that are
located at depths near or below the brittle-ductile transition zone in the crust where the …

Experimental design for hydrofracturing and fluid flow at the DOE EGS collab testbed

JP Morris, P Fu, P Dobson, J Ajo-Franklin… - ARMA US Rock …, 2018 - onepetro.org
We describe our overall objectives and approach to designing the first experimental testbed
of the EGS Collab project. This first phase of the project entails site characterization, drilling …

Seismic monitoring of the STIMTEC hydraulic stimulation experiment in anisotropic metamorphic gneiss

CM Boese, G Kwiatek, T Fischer, K Plenkers… - Solid Earth …, 2021 - se.copernicus.org
In 2018 and 2019, the STIMTEC hydraulic stimulation experiment was conducted at 130 m
depth in the Reiche Zeche underground research laboratory in Freiberg/Germany. The …

The distribution, orientation, and characteristics of natural fractures for Experiment 1 of the EGS Collab Project, Sanford Underground Research Facility

C Ulrich, PF Dobson, TJ Kneafsey… - ARMA US Rock …, 2018 - onepetro.org
The EGS Collab project is focused on understanding and predicting permeability
enhancement and evolution in crystalline rocks. To accomplish this, the project is creating a …

Slip tendency analysis of fracture networks to determine suitability of candidate testbeds for the EGS Collab hydroshear experiment

A Singh, G Neupane, P Dobson, M Zoback, J Morris… - 2019 - osti.gov
Experiment 2 of the EGS Collab project is aimed at testing stimulation by hydro-shearing of
existing natural fractures, versus Experiment 1, which is focused on hydraulic fracturing a …

[PDF][PDF] Numerical simulation applications in the design of EGS Collab Experiment 1

MD White, P Fu, A Ghassemi, H Huang… - … , 43rd Workshop on …, 2018 - pangea.stanford.edu
ABSTRACT The United States Department of Energy, Geothermal Technologies Office
(GTO) is funding a collaborative investigation of enhanced geothermal systems (EGS) …

Results of multiple tracer injections into fractures in the EGS collab testbed-1

G Neupane, ED Mattson, MA Plummer, RK Podgorney - 2020 - osti.gov
The EGS Collab project constructed an intermediate scale (~ 10-20 m) testbed at the 4850
level of the Stanford Underground Research Facility (SURF) in South Dakota for testing and …

Coupled Thermo–Hydro–Mechanical–Seismic Modeling of EGS Collab Experiment 1

J Lu, A Ghassemi - Energies, 2021 - mdpi.com
An important technical issue in the enhanced geothermal system (EGS) is the process of
fracture shear and dilation, fracture network propagation and induced seismicity. EGS …

[PDF][PDF] Modeling transport of multiple tracers in hydraulic fractures at the EGS Collab test site

Q Zhou, CM Oldenburg… - … , 43rd Workshop on …, 2018 - pangea.stanford.edu
Hydraulic fracturing is planned to be performed at the EGS Collab Test site located in a drift
(tunnel) at the Sanford Underground Research Facility (SURF) at a depth of 4,850 feet …