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"Shear Zone"×
Utah FORGE, UT×

Utah FORGE: Laboratory Shear Experiments Linking Fault Roughness, Friction, Permeability, and P-Wave Characteristics

Aug 20, 2025
23.22 GB
Publicly accessible
This dataset contains results from five laboratory shear experiments on gneiss and granitoid samples from the Utah FORGE site, conducted at Penn State University. The experiments investigate links between fault surface roughness, frictional behavior, permeability, and P-wave acous...
Authors
Eijsink, A. et al Pennsylvania State University
geothermalenergyfrictionroughnessutah forgeegslaboratory datamodeled datashear experimentsfault mechanicspermeabilityp-waveacoustic transmissivityfault roughnessrate-and-state frictionbiaxial deformationgneissgranitoidoptical profilometrykeyencersfit3000mechanical dataacoustic datafault zone propertiesgeomechanicsrock physicsgeothermal reservoir characterization

Utah FORGE: Results of Direct Shear Tests on Saturated Joints in Sierra White Granite

Dec 31, 2022
1.18 MB
Publicly accessible
This dataset includes an Excel file with the results of direct shear tests to investigate the mechanical and geophysical response of saturated joints. Tests were conducted on induced tension-fractured Sierra White granite joints in a custom water pressurized chamber. The preparati...
Authors
Han, K. et al Purdue University
geothermalenergyutah forgesaturationrock saturationgranitesierra white granitelab testdirect shear testshear strengthshear stressgeophysicsseismic wavep-wavegeologyexcelprocessed data

Utah FORGE: Fluid Injection Induced Shearing Experiments on Fractured Granitoid at Elevated Temperatures

Aug 12, 2024
80.21 MB
Publicly accessible
This repository contains experimental data from a series of fluid injection-induced shearing tests conducted on Utah FORGE granitoid. The experiments were performed using an aluminum triaxial pressure vessel (TEMCO) apparatus at Pennsylvania State University. The primary aim was t...
Authors
Elsworth, D. et al Pennsylvania State University
geothermalenergytemperatureexperimentpre-stressseismicityutah forgeegsgranitoidtemcotriaxial pressure vesselfault seismicitypre-stress ratioshearpore pressure60-gritinclined fracture

Utah FORGE: Direct Shear Tests on Saturated Sierra White Granite Joints at Elevated Temperatures

Nov 24, 2025
2.38 MB
Publicly accessible
This dataset contains results from laboratory direct shear experiments performed on tension-induced fractures in Sierra White granite under saturated conditions at target temperatures of 50 C and 100 C. The data were collected using a custom water-pressurized chamber equipped with...
Authors
Han, K. et al Purdue University
geothermalenergyutah forgesaturationgranitesierra white granitelab testdirect shear testshear strengthshear stressgeophysicsp-waves-waveelastic wave propagationegslaboratory datafracturesdirect shearraw datageomechanicssaturated fracturesshear displacementeffective normal stresspore pressureultrasonic measurementsgeophysical responserock mechanicsstimulation

Utah FORGE: Direct Shear Test Data for Investigating Seismic Precursors to Shear Failure of Fractures

Jun 11, 2024
3.13 MB
Publicly accessible
This dataset includes results of direct shear tests to investigate the mechanical and geophysical response of dry and saturated fractures in Indiana limestone and Sierra White granite. Direct shear tests were performed on tensile-induced fractures in Indiana limestone and Sierra W...
Authors
Han, K. et al Purdue University
geothermalenergyutah forgesaturationgranitesierra white granitelab testdirect shear testshear strengthshear stressgeophysicsp-waves-waveexcelprocessed dataelastic wave propagationegslaboratory datarmreshearfracturesindiana limestonetransducer

Utah FORGE: Laboratory Fault Reactivation and Permeability Evolution During Fluid Injection

Sep 15, 2025
182.35 GB
Publicly accessible
This dataset contains results from controlled shear reactivation experiments performed on cylindrical Westerly and granitoid granite samples with a single inclined fracture. Laboratory faults were pre-loaded near failure and reactivated by fluid injection to examine relationships ...
Authors
Elsworth, D. et al Pennsylvania State University
geothermalenergyinduced seismicityutah forgewesterly granitegranitoidpermeabilityshear stimulationegsfault reactivationfluid injectionpermeability evolutionseismicityacoustic emissionssingle inclined fractureshear stresspore pressuretriaxial testingmechanical datageomechanicsraw dataprocessed dataacoustic data

Utah FORGE: Triaxial Direct Shear Results

Aug 14, 2023
755.67 MB
Publicly accessible
This submission contains a report and associated data from triaxial direct shear tests conducted by Los Alamos National Laboratory. The samples used were sourced from 16A(78)-32 well core. The primary objectives of this test were to determine the shear strength in both intact an...
Authors
Frash, L. et al Los Alamos National Laboratory
geothermalenergytriaxial core testingtriaxial shear testingtriaxial testinglanllos alamoscore testingcore fracture testingutah forgeutah geothermalinjectiongeochemistryegsshear strengthtriaxialpermeabilityeffluent chemistry

Utah FORGE: Triaxial Direct Shear Results February 2025

Feb 28, 2025
1.18 GB
Publicly accessible
This dataset contains results from nine triaxial direct shear tests conducted by Los Alamos National Laboratory on samples from FORGE Well 16A(78)-32. The primary objectives of this work were to determine the shear strength in both intact and residual states, evaluate dilation aga...
Authors
Frash, L. et al Los Alamos National Laboratory
geothermalenergyutah forgetriaxial core testingtriaxial shear testingtriaxial testinglos alamoslanllawrence livermorecore testingcore fracture testinginjectiongeochemistryegsshear strengthtriaxialpermeabilityeffluent chemistrysurface roughnessprofilometryslickensidesdilationfracture compressibilityhigh temperaturetriaxial direct shearrock mechanicsstress-strain behaviorhydromechanical datalaboratory testinggeomechanicswell 16a78-32rock deformation

Utah FORGE: Fault Shear Reactivation Experimental Data for Fluid Injection-Rate Controls on Seismic Moment

Nov 07, 2023
12.98 MB
Publicly accessible
Included are experimental data recorded from shear experiments that specifically explore the link between fluid-injection rate and seismic moment resulting from shear reactivation of laboratory faults. Raw mechanical data from three experiments are included alongside corresponding...
Authors
Roseboom, M. et al Pennsylvania State University
geothermalenergyinduced seismicityinjection rateegsseismic momentgeomechanicsgeophysicsutah forgeshearmatlabshear experimentsraw datacodecore experimenttemcoconfining pressurepore pressureaxial pressureshear displacementfracturealong-fault pressureconstant shear stress

Utah FORGE: Fault Reactivation Through Fluid Injection Induced Seismicity Laboratory Experiments

Jul 01, 2023
119.91 MB
Publicly accessible
Included are results from shear reactivation experiments on laboratory faults pre-loaded close to failure and reactivated by the injection of fluid into the fault. The sample comprises a single-inclined-fracture (SIF) transecting a cylindrical sample of Westerly granite. All expe...
Authors
Yu, J. et al Pennsylvania State University
energyinduced seismicityegsutah forgewesterly graniteraw datacodematlabfault activationinjection testpressureflow ratereactivationshearfluid

Utah FORGE 5-2557: Trixial Shear and Wellbore Breakout Tests Report and Data

Apr 19, 2023
2.96 MB
Publicly accessible
Included are a report and data from triaxial shear tests on simulated Sierra White fault gouge and a borehole stimulation experiment. This serves as a progress report for the Role of Fluid and Temperature in Fracture Mechanics and Coupled Thermo-Hydro-Mechanical-Chemical (THMC) P...
Authors
Choens, C. and Yoon, H. Sandia National Laboratories
geothermalenergyutah forgetriaxial shear testwellbore breakout testsierra white graniteegsenhanced geothermal system5-2557snlpurduesandia national laboratoriesborehole stimulationexperimental designraw databorehole breakoutfriction testgeomechanicsslip mechanismsaxial strain

Utah FORGE 5-2615: Shear Enhanced Permeability In a Granitoid Fracture Presentation Slides

Feb 28, 2024
2.51 MB
Publicly accessible
Provided here is a set of presentation slides detailing stress-dependent permeability in FORGE granitoid fractures and how fracture slip affects permeability. It outlines empirical correlations between permeability, stress, and fracture aperture, emphasizing that mechanically clos...
Authors
Ghassemi, A. and Ye, Z. University of Oklahoma
geothermalenergyutah forgeegsfacture slippermeabilitystress-dependent permeabilitygranitoid fracturefracture networkstimulationapertureinjectionflow testshear testreservoir stressreportdata analysis

Utah FORGE: Earth Model Mesh Data for Selected Surfaces

Dec 07, 2018
20.83 MB
Publicly accessible
This submission contains a number of data files with vertices of meshed/interpolated surfaces used in the Phase 2B earth model. Examples include land surface (based on 10-meter DEM), the granitoid-basin fill contact, several faults, and also interpolated temperature isosurfaces f...
Authors
Podgorney, R. Idaho National Laboratory
geothermalenergystudent competitionearth modelforgeroosevelt hot springsutahdemdigital elevation modelgeospatial datacoordinateisosurfacefaultstructurestructuraldatalocationland surfacetemperatureopal moundnegro magegsmilfordenhanced geothermal systemutah forgemodelingmodellingmesh datagranitoidtoptopographygeologybasin fillresourcecharacterizationprocessed data

Utah FORGE: Geologic, Topographic, and Other Related Maps and GIS Data from the Earth Model

Dec 07, 2018
964.98 MB
Publicly accessible
This submission contains a number of maps and shapefiles related to the Utah FORGE site. Examples include geologic maps (several variations) and GIS data for the Utah FORGE site outline. All data are georeferenced to UTM, zone 12N, NAD 83, NAVD 88.
Authors
Podgorney, R. et al Idaho National Laboratory
geothermalenergyforgeearth modelstudent competitiongeospatial dataroosevelt hot springsutahgisarcgisshapefilegeologygeologicmaptopographytopographicegsmilfordutah forgesiteoutlinefaultsquaternarystructural

Utah FORGE 5-2419: Seismicity-Permeability Relationships Probed via Nonlinear Acoustic Imaging 2024 Annual Workshop Presentation

Sep 05, 2024
126.38 MB
Publicly accessible
This is a presentation on Seismicity-Permeability Relationships Probed via Nonlinear Acoustic Imaging by Pennsylvania State University, presented by Derek Elsworth. This video slide presentation discussed controls and acoustic signatures of aseismic through seismic evolution of re...
Authors
Elsworth, D. et al Energy and Geoscience Institute at the University of Utah
geothermalenergyutah forgeaseismic evolutionfriction-stability-permeabilitypermeabilityfracturesshear-reactivationshearstimulationreservoir stimulationseismicityfracfracingwell stimulationpetrophysicsgeomechanicshthppennsylvania state universityvideopresentationegs

Utah FORGE: Laboratory Data for Emergent Pore Pressure Heterogeneity Controlling Slip Timing and Microseismicity

Mar 02, 2026
45.1 MB
Publicly accessible
Included are experimental data recorded from shear experiments that explore the effects of pore pressure heterogeneity on microseismic character and fault slip timing resulting from shear reactivation of laboratory faults. Raw mechanical and acoustic data from 15 experiments are i...
Authors
Elsworth, D. et al Pennsylvania State University
geothermalenergyinduced seismicitypore pressure heterogeneitygeomechanicsshear experimentsinjection rateutah forgeegsfault reactivationmicroseismicityacoustic emissionsfault slip timinglaboratory datatriaxial deformationgranitoid coresfluid injectionraw data

Utah FORGE: Temperature-Dependent Fracture Seismicity from Fluid Injection Experiments

Feb 29, 2024
4.34 MB
Publicly accessible
This dataset contains experimental data from fluid injection experiments conducted to investigate the influence of temperature on fracture seismicity. The experiments were performed on granite samples from Utah FORGE. The samples were prepared with a 30-degree inclined fracture an...
Authors
Wang, J. et al Pennsylvania State University
geothermalenergyegstemperaturefracture seismicityfluid injectionshear stressdisplacementpore pressureexperimental geomechanicsgeomechanicshigh temperature rock mechanicsraw dataseismicitygraniteutah forgefracture mechanicsstimulation

Utah FORGE: Friction-Permeability-Seismicity Laboratory Experiments with Non-Linear Acoustics

Jul 08, 2022
7.68 MB
Publicly accessible
Laboratory experimental data on saw-cut interface of Westerly Granite and Utah Forge granitoid rocks. Experiments include velocity-stepping and fluid pressure stepping experiments. Mechanical data from 3 ISCO pumps connected to a Temco pressure vessel measure axial, confining and ...
Authors
Eijsink, A. and Elsworth, D. Pennsylvania State University
geothermalutah forgefriction experimentsfault permeabilityutahacousticsnonlinear acousticsacoustic dataraw datapressurevelocitystep testtestfailuretesting

Utah FORGE 5-2565: Evolution of Permeability and Strength Recovery of Shear Fractures Under Hydrothermal Conditions 2024 Annual Workshop Presentation

Sep 15, 2024
82.63 MB
Publicly accessible
This is a presentation on the Evolution of Permeability and Strength Recovery of Shear Fractures Under Hydrothermal Conditions by United States Geological Survey, presented by Tamara Jeppson. This video slide presentation, by the USGS, discusses the determination of how thermal, ...
Authors
Jeppson, T. et al Energy and Geoscience Institute at the University of Utah
geothermalenergyutah forgeusgsthmcthermalhydrologicmechanicalchemicalfracture networksfractures propertiesfracturesmodes of reactionempirical fracture modelsmicromechanical

Utah FORGE: Well 16A(78)-32 Stimulation Data (April, 2022)

May 18, 2022
288.94 MB
Publicly accessible
This is a set of data related to the stimulation program at Utah FORGE well 16A(78)-32 during April, 2022. This includes daily reports, 1 second Pason data, tracer data, and shear stimulation data and information including a report of an evolving prognosis for the stimulation oper...
Authors
McLennan, J. Energy and Geoscience Institute at the University of Utah
geothermalenergyutah forgewell 16a78-32well 16a78-32 stimulationwell stimulationutah forge well stimulationegsstimulationpasondaily reportsshear stimulationraw dataprognosislow-rate pumpingwell datamilfordforgetracer datatracer test

Utah FORGE 5-2565: Final Report on the Evolution of Permeability and Strength Recovery of Shear Fracture Under Hydrothermal Conditions

Aug 24, 2025
3.52 MB
Publicly accessible
This report discusses the results of research on the ability to create and/or reactivate and subsequently sustain fracture systems which are strongly influenced by complexly coupled mechanical (M) and chemical (C) processes in reservoirs forced from equilibrium by hydraulic stimul...
Authors
Jeppson, T. et al United States Geological Survey
geothermalenergyutah forgeegsenhanced geothermal systemsfluid-rock interactionsthmc processesfracture evolutionusgsfracturesgeothermal resorvoirsfracture reactivationthmcmechanicalchemicalhydraulic stimulationthermal drawdownfinal reporttechnical report

Utah FORGE: Core Material Friction Experiments

Mar 15, 2023
696.08 MB
Publicly accessible
The following folders contain 3 friction experiments on Utah FORGE core material from depths of 6735 8533ft. The experiment conditions range from 100% relative humidity at room temperature to fluid-saturated at 110C. Experiments were done on both intact samples in a single-direct ...
Authors
Marone, C. et al Pennsylvania State University
utah forgegeothermalenergyfriction experimentsintact samplesgouge sampleshigh temperaturepore fluid pressuredrained boundary conditionspermeabilityvelocity stepshealingraw dataprocessed data

Utah FORGE 5-2419: Fluid Injection Experiments on Granite Samples at Four Different Temperatures

Sep 05, 2024
6.76 MB
Publicly accessible
This dataset contains results from four fluid injection experiments at 24 C, 69 C, 111 C, and 140 C using a triaxial loading apparatus ("Temco"). Tests were conducted on a Utah FORGE granite sample with a 30 degree inclined fracture. Confining pressure was maintained at 10 MPa, wh...
Authors
Wang, J. and Elsworth, D. Pennsylvania State University
geothermalenergyfluid injection experimentutah forgeegsfluid injectionfractured granitetriaxial loadingpermeabilityseismic momentconfining pressurepore pressureshear stresselevated temperatureexperimental datageomechanicsstimulationhydraulic stimulation

Utah FORGE: TEM and Gravity Data

Feb 05, 2018
1.62 MB
Publicly accessible
This submission includes a gravity data in text format and as a GIS point shapefile and transient electromagnetic (TEM) raw data. Each text file additionally contains location data (UTM Zone 12, NAD83) and elevation (meters) data for that station. The gravity data shapefile was i...
Authors
Hardwick, C. and Nash, G. Energy and Geoscience Institute at the University of Utah
geothermalenergyutah forgegravity datagravitygeophysicsroosevelt hot springmilfordmineral mountainsutahgisarcgisgeospatial datageophysicalsurveyshapefileshape filedata reductionbouger anomalycorrectionstransient electromagnetic datatem datageophysical dataroosevelt hot springsgeospatialelectromagneticsfrontier observartory for research in geothermal energyforgetext filetime-domain emtemegsprocessed dataraw data

Utah FORGE 2439: Well 16B(78)-32 Field-Test Data from Mini-Frac Tests

Jul 02, 2023
2.73 GB
Publicly accessible
This submittal includes the field-test data collected during stress tests conducted in the Utah FORGE 16B(78)-32 wellbore to measure/characterize the stresses in the geothermal reservoir. The type of stress test performed is referred to as a mini-frac test or a micro-frac test. Th...
Authors
Kelley, M. et al Battelle Memorial Institute
geothermalenergygeomechanicsutahforgeminifracstressin-situ stressegsmini-fracstress testgeophysical logimage logacoustic logsonic logfracturinghydraulic fracturingreservoir stressinjectioncaliper logstemperature logsxmac16b78-32baker hughespacker element pressureflowbackpacker element
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