Hydro‐mechanical measurements of sheared crystalline rock fractures with applications for EGS Collab Experiments 1 and 2
We present hydro‐mechanical measurements that characterize shear on natural fractures in
schist, amphibolite, and rhyolite specimens from the enhanced geothermal system (EGS) …
schist, amphibolite, and rhyolite specimens from the enhanced geothermal system (EGS) …
[HTML][HTML] Estimating the least principal stress in a granitic rock mass: systematic mini-frac tests and elaborated pressure transient analysis
The hydraulic fracturing technique (also termed mini-frac test) is commonly used to estimate
the in situ stress field. We recently conducted a mini-frac stress measurement campaign in …
the in situ stress field. We recently conducted a mini-frac stress measurement campaign in …
[PDF][PDF] The EGS Collab–discoveries and lessons from an Underground experiment series
Tim Kneafsey1, Doug Blankenship2, Jeff Burghardt3, Tim Johnson3, Pat Dobson1, Paul C.
Schwering2, Chet Hopp1, Mark White3, Joseph P. Morris4, Chris Strickland3, Vince …
Schwering2, Chet Hopp1, Mark White3, Joseph P. Morris4, Chris Strickland3, Vince …
Measurement of Geomechanical and Hydrological Properties of EGS-Collab Geothermal Rocks
To inform well layout and stimulation designs at Experimental 2 site (4100 Level) for the
EGS Collab project, we measured a suite of geomechanical and hydrological properties for …
EGS Collab project, we measured a suite of geomechanical and hydrological properties for …
The EGS Collab project–stimulations at two depths
The EGS Collab project, supported by the US Department of Energy, is performing
intensively monitored rock stimulation and flow tests at the 10-m scale in an underground …
intensively monitored rock stimulation and flow tests at the 10-m scale in an underground …
Enhanced Geothermal System Design Using GeoDT and Fracture Caging—EGS Collab Stimulation Prediction Study
Enhanced Geothermal System (EGS) design optimization requires simultaneous evaluation
of well placement, well stimulation, flow rates, pumping pressures, seismic stability, and …
of well placement, well stimulation, flow rates, pumping pressures, seismic stability, and …
Characterizing rock fractures and physical properties for Experiment 2 of the EGS Collab Project, Sanford Underground Research Facility
The EGS Collab project is focused on understanding and predicting permeability
enhancement and evolution in crystalline rocks to support geothermal energy production. To …
enhancement and evolution in crystalline rocks to support geothermal energy production. To …
[PDF][PDF] Fluorescein Tracer Testing on the 4100L–A Preliminary Examination of Initial Arrival in Wells and the Drift at the Second EGS Collab Testbed
E Mattson, M Plummer, G Neupane… - 48th Workshop on …, 2023 - pangea.stanford.edu
In the summer of 2022, four fluorescein injection tests were conducted in an attempt to
characterize the fracture system and its flow evolution during the EGS Collab Project's 2.5 …
characterize the fracture system and its flow evolution during the EGS Collab Project's 2.5 …
[PDF][PDF] A holistic review on hydraulic fracturing stimulation laboratory experiments and their transition to enhanced geothermal system field research and operations
C Langbauer, FF Tehrani… - Liquid and Gaseous …, 2021 - pure.unileoben.ac.at
This paper presents a thorough overview of hydraulic stimulation techniques, conducted in
laboratories. It further analyses field experiments and ongoing projects for geothermal …
laboratories. It further analyses field experiments and ongoing projects for geothermal …
[图书][B] The EGS Collab-Experiment 2 Stimulations at 1.25 km Depth
The EGS Collab project is performing well-monitored rock stimulation and flow tests at the
10-m scale in an underground research laboratory to inform challenges in implementing …
10-m scale in an underground research laboratory to inform challenges in implementing …