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"rock stress"×

Data for Uncontained Ruptures Reduce Energetics of Triggered Seismicity: Laboratory Fault Reactivation Experiments

Apr 13, 2026
43.25 MB
Publicly accessible
The dataset contains raw mechanical data from laboratory fault reactivation experiments on pre-stressed granite/granitoid samples, along with experimental parameters and MATLAB processing code for data deduction. The raw time-series data were recorded using a triaxial-shear appara...
Authors
Elsworth, D. et al Pennsylvania State University
injection-induced seismicityfault pre-stressseismic moment scalingrupture regimesinduced seismicitytriggered seismicityfault reactivationfluid injectionearthquake magnitudeforecastingrupture mechanicscontained ruptureuncontained ruptureseismic momentlaboratory experimentsraw datatriaxial sheargranitegranitoidgeomechanicsshear displacementaxial displacementmatlab

Thermal Drawdown-Induced Flow Channeling in a Single Fracture in EGS

Nov 15, 2015
1.32 MB
Publicly accessible
The evolution of flow pattern along a single fracture and its effects on heat production is a fundamental problem in the assessments of engineered geothermal systems (EGS). The channelized flow pattern associated with ubiquitous heterogeneity in fracture aperture distribution caus...
Authors
Guo, B. et al Lawrence Livermore National Laboratory
geothermalthermal drawdownsingle fracture systemthermomechanical couplingflow channelingreservoir simulationegsengineered geothermal systemsgeothermicsheat productionsingle fracturethermomechanical

EGS Collab Experiment 2: Earth Model Datasets

May 29, 2022
747.89 MB
Publicly accessible
The EGS Collab Project performed a series of tests to increase the understanding the response of crystalline rock mass to stimulations and fluid circulation to efficiently implement enhanced geothermal systems (EGS) technologies. The EGS Collab team created two underground testbed...
Authors
Neupane, G. et al Idaho National Laboratory
geothermalenergyegs collabegssurfsanford underground research facilityleadsouth dakotacollabraw dataprocessed datageologyconceptual model

Utah FORGE 2-2404: Determination of Reservoir-Scale Stress State Presentation Slides

Jul 31, 2022
4.56 MB
Publicly accessible
This PowerPoint summarizes the integration of multiple approaches and data to constrain wellbore stress models at Utah FORGE. This stress determination used faulting theory, breakouts, and drilling-induced cracks detected in image logs. Wellbore stress profiles were established f...
Authors
Ghassemi, A. et al The University of Oklahoma
geothermalenergyfracture mechanicsfocal mechanismanelastic strain recoverydfitwellborestress characterizationstress modelin-situ stresspresentationslidesinduced seismicityreservoir stressutah forgeegsimage logsfaulting theorybreakoutsdrilling-induced cracks

Utah FORGE 2-2439v2: A Multi-Component Approach to Characterizing In-Situ Stress Final Report

Dec 22, 2025
2.43 MB
Publicly accessible
This comprehensive technical report documents a multi-component approach to in-situ stress characterization at the Utah FORGE EGS site that integrates Machine Learning (ML) methods for predicting near-well principal stresses around geothermal wells with the physics-based finite el...
Authors
Bunger, A. et al University of Pittsburgh
geothermalenergyin-situ stress estimationutah forgewave velocitythermo-poro-elastic modelingmachine learningegsnear-wellbore stressfar-field principal stressstress anisotropyphysics-based modelingfinite element modelingsonic logtuvtechnical reportreservoir characterization

Dixie Valley Engineered Geothermal System Exploration Methodology Project, Baseline Conceptual Model Report

Jan 02, 2014
504.96 MB
Publicly accessible
The Engineered Geothermal System (EGS) Exploration Methodology Project is developing an exploration approach for EGS through the integration of geoscientific data. The overall project area is 2500km2 with the Calibration Area (Dixie Valley Geothermal Wellfield) being about 170km2....
Authors
Iovenitti, J. AltaRock Energy Inc
geothermaldixie valleyegshydrothermal systemfavorability/trust mappingfinal scientific reportegs exploration methodologybob karlingravitystation locationcomplete bouguer anomalyphil wannamakermagnetotelluricsmetadatadatainversionquantecileana tibulecseismic velocity modelfletcher h ibsergeostatisticsgeophysics

Utah FORGE 2-2404: The University of Oklahoma, Application of Advanced Techniques for Determination of Reservoir-Scale Stress State at Utah FORGE Final Report

Jun 30, 2025
3.73 MB
Publicly accessible
This final report summarizes the work done on Utah FORGE project 2-2404. The project aimed to develop a methodology integrating alternative well bore and core-based methods and reservoir-scale focal mechanisms (FM) to better estimate the reservoir stress at FORGE. The project obje...
Authors
Ghassemi, A. The University of Oklahoma
geothermalenergyutah forgeegswell borecore-basedfocal mechanismsreservoir stressfinal reporttechnical reportanelastic strain recoverydifferential strain curvefracture mechanicsdrilling-induced cracksnear-wellbore stress

Slip and Dilation Tendency Analysis of the Patua Geothermal Area

Dec 31, 2013
15.36 MB
Publicly accessible
Critically stressed fault segments have a relatively high likelihood of acting as fluid flow conduits (Sibson, 1994). As such, the tendency of a fault segment to slip or to dilate provides an indication of which faults or fault segments within a geothermal system are critically st...
Authors
E., J. University of Nevada
geothermalpatua geothermal areaslip tendency analysisdilation tendency analysispatuafaultingfaultsstressfluid dlow conduitsambient stressshapefileshape filegisarcgisgeospatial datadata

Utah FORGE 2439: Report on Minifrac Tests for Stress Characterization

Feb 22, 2024
21.49 MB
Publicly accessible
This report describes minifrac tests conducted in the 16B(78)-32 well at the Utah FORGE site to characterize subsurface stresses, including the magnitude and orientation of the minimum and maximum horizontal stresses and the magnitude of the vertical stress. A minifrac test was co...
Authors
Kelley, M. et al Battelle Memorial Institute
geothermalenergyutahforgeegsstressgeomechanicsminifracin-situ stress16b16b78-32geophysicshydraulic fracturingvertical stressminimum horizontal stressmaximum horizontal stressstress regimeflowback datare-opening pressurepressure responsethermal coolingrcxcirculationtechnical report

Slip and Dilation Tendency Analysis of the Salt Wells Geothermal Area

Dec 31, 2013
6.75 MB
Publicly accessible
Critically stressed fault segments have a relatively high likelihood of acting as fluid flow conduits (Sibson, 1994). As such, the tendency of a fault segment to slip (slip tendency; Ts; Morris et al., 1996) or to dilate (dilation tendency; Td; Ferrill et al., 1999) provides an in...
Authors
E., J. University of Nevada
geothermalsalt wells geothermal areaslip tendency analysisdilation tendency analysisslip tendencydilation tendencysalt wellsfaultingfaultsstressfluid flow conduitsambient stressshapefileshape filegisarcgisdatageospatial data

Slip and Dilation Tendency Analysis of the San Emidio Geothermal Area

Dec 31, 2013
19.7 MB
Publicly accessible
Critically stressed fault segments have a relatively high likelihood of acting as fluid flow conduits (Sibson, 1994). As such, the tendency of a fault segment to slip (slip tendency; Ts; Morris et al., 1996) or to dilate (dilation tendency; Td; Ferrill et al., 1999) provides an in...
Authors
E., J. University of Nevada
geothermalsan emidio geothermal areaslip tendency analysisdilation tendency analysissan emidiofaultingfaultsstressfluid flow conduitsambient stressshapefileshape filegisarcgisslip tendencydilation tendencydatageospatial data

Cape EGS: Gold 4-PB: Mudlog, Mass Spectrometry, Triple Combo, and Dipole Sonic-Derived Geomechanical data

Apr 30, 2025
30.1 MB
Awaiting release
This dataset includes geological and geophysical well logs from the Gold 4-PB well at the Cape EGS site near Utah FORGE, collected between December 2024 and January 2025. The dataset covers lithological, geochemical, and petrophysical data acquired during and after drilling. Data ...
Authors
Dadi, S. and Adams, T. Fervo Energy
geothermalenergycape egsutah forgeegsgold-4-pbgoldmass spectrometrymud logtriple combodipole sonicgeomechanicspetrophysicsresistivityporositywell logsanisotropygas analysislasraw data

Utah FORGE 2-2439v2: Reports on Stress Prediction and Modeling for Well 16B(78)-32 May 2025

Jun 05, 2025
20.34 MB
Publicly accessible
These two reports from the University of Pittsburgh document related efforts under Utah FORGE Project 2-2439v2 to estimate in-situ stresses in well 16B(78)-32 using laboratory data, machine learning models, and physics-based simulations. One report focuses on developing and valida...
Authors
Lu, G. et al University of Pittsburgh
geothermalenergyutah16b78-32in-situ stressultrasonic velocityutah forgeegs16bmachine learningtrue triaxial testingsonic logsstress predictionfar-field stressthermo-poro-mechanicalmodelingdeep learningfinite element modelgeothermal reservoirstress profilingstress anisotropytechnical report

Utah FORGE 2-2404: Application of Advanced Techniques for Determination of Reservoir-Scale Stress State at Utah FORGE 2023 Annual Workshop Presentation

Sep 08, 2023
67.53 MB
Publicly accessible
This is a presentation on the Application of Advanced Techniques for Determination of Reservoir-Scale Stress State at Utah FORGE project by the University of Oklahoma, presented by Dr. Ahmad Ghassemi, McCasland Chair Professor. The project's objective was to develop a methodology ...
Authors
Ghassemi, A. University of Oklahoma
geothermalenergyannual workshop2023reservoir stressstress statein-situ stressinduced seismicitymitigationstress modelingredistributionpermeability evolutionutah forgeegsreservoir stress redistribution

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

STRESSINVERSE Software for Stress Inversion

Oct 31, 2018
Size unavailable
Publicly accessible
The STRESSINVERSE code uses an iterative method to find the nodal planes most consistent with the stress field given fault frictional properties. STRESINVERSE inverts the strike, rake and dip from moment tensor solutions for the in-situ state of stress. The code iteratively solves...
Authors
Gritto, R. Array Information Technology
geothermalenergystress inversioninversionstressseismicanalysisstressinversejointfault orientationmatlabcodenumericalmomenttensorsoftwarepassivefaultfaultingearthquakeorientationgeophysicsgeophysicalmicroseismicityinducedseismicitystimulationegsinjectionfracturemonitoringhydraulicgeneration

Thermal-Hydrological-Mechanical Modelling of Stockton University Reservoir Cooling System, Large Scale Grid

Feb 26, 2021
248.07 MB
Publicly accessible
Mesh, properties, initial conditions, injection/withdrawal rates for modeling thermal, hydrological, and mechanical effects of fluid injection to and withdrawal from ground for Stockton University reservoir cooling system (aquifer storage cooling system), Galloway, New Jersey, on ...
Authors
Smith, J. et al Lawrence Berkeley National Laboratory
geothermalcoolingthermal-hydrological-mechanicalmodelingground sourcesimulationflowcfdflow simulationmodelreservoir coolinginjectionreservoir cooling systemaquifer storage cooling systemgroundground coolinggeothermal coolingreservoirnew jerseystockton universitywithdrawalfea

Slip and Dilation Tendency Analysis of McGinness Hills Geothermal Area

Dec 31, 2013
6.26 MB
Publicly accessible
Slip and Dilation Tendency in focus areas Critically stressed fault segments have a relatively high likelihood of acting as fluid flow conduits (Sibson, 1994). As such, the tendency of a fault segment to slip (slip tendency; Ts; Morris et al., 1996) or to dilate (dilation tendency...
Authors
E., J. University of Nevada
geothermalmcginness hills geothermal areaslip tendencydilation tendencyfaultingfaultsstressfluid flow conduitsambient stressshapefileshape filegisarcgisdatageospatial data

Slip and Dilation Tendency Analysis of Neal Hot Springs Geothermal Area

Dec 31, 2013
49.77 MB
Publicly accessible
Slip and Dilation Tendency in focus areas Critically stressed fault segments have a relatively high likelihood of acting as fluid flow conduits (Sibson, 1994). As such, the tendency of a fault segment to slip (slip tendency; Ts; Morris et al., 1996) or to dilate (dilation tendency...
Authors
E., J. University of Nevada
geothermalneal hot springs geothermal areaslip tendencydilation tendencyneal hot springsfaultingfaultsstressfluid flow conduitsambient stressshapefileshape filegisarcgisdatageospatial data

Slip and Dilation Tendency Analysis of the Tuscarora Geothermal Area

Dec 31, 2013
25.18 MB
Publicly accessible
Critically stressed fault segments have a relatively high likelihood of acting as fluid flow conduits (Sibson, 1994). As such, the tendency of a fault segment to slip (slip tendency; Ts; Morris et al., 1996) or to dilate (dilation tendency; Td; Ferrill et al., 1999) provides an in...
Authors
E., J. University of Nevada
geothermaltuscarora geothermal areaslip tendency analysisdilation tendency analysisslip tendencydilation tendencytuscarorafaultingfaultsfluid flow conduitsstressambient stressshapefileshape filegisarcgisdatageospatial data

Washington Play Fairway Analysis Geothermal Heat and Permeability Potential Geodatabases

Dec 15, 2015
309.26 MB
Publicly accessible
This file contains file geodatabases of the Mount St. Helens seismic zone (MSHSZ), Wind River valley (WRV) and Mount Baker (MB) geothermal play-fairway sites in the Washington Cascades. The geodatabases include input data (feature classes) and output rasters (generated from modeli...
Authors
Norman, D. et al Washington Division of Geology and Earth Resources
geothermalmount st. helens seismic zonewind river valleymount bakerpermeabilityheatfavorabilityuncertaintyrisksensitivityplay-fairwaywashingtoncascade rangeslip tendencydilation tendencysigma 3maximum coulomb shear stressdisplacementdisplacement gradientmaximum shear strain ratedilational strain ratefaultvolcanic ventintrusive rocktemeprature gradientgeothermometryhot springfumarolegeothermal favorabilitystrain rategisarcgisgeospatial datageodatabasegdbwashington statepfa

Utah FORGE 2439: Machine Learning for Well 16A(78)-32 Stress Predictions

Jun 19, 2023
2.3 MB
Publicly accessible
This report reviews the training of machine learning algorithms to laboratory triaxial ultrasonic velocity data for Utah FORGE Well 16A(78)-32. Three machine learning (ML) predictive models were developed for the prediction of vertical and two orthogonally oriented horizontal str...
Authors
Kelley, M. et al Battelle Memorial Institute
geothermalenergymachine learningin-situ stressstress characterizationutah forgegeophysicsseismictriaxialstress predictionartificial neural networkmodelfeed forward artificial neural network

Laboratory data for characterizing acoustic emissions during differential stress-driven and pore-pressure-driven failure in granite

Sep 20, 2026
Size unavailable
Curated
This dataset contains acoustic-emission (AE), ultrasonic-transmission, permeability, and hydromechanical measurements from triaxial laboratory experiments comparing differential stress-driven and pore-pressure-driven failure in saturated, thermally cracked Barre granite at 80 degr...
Authors
Nakata, N. and Pec, M. Lawrence Berkeley National Laboratory
geothermalenergyaegranitelaboratory experimentpermeabilityfracture networksstressstrainseismic monitoringraw datatraffic lightdifferential stress

Utah FORGE 2-2404: Application of Advanced Techniques for Determination of Reservoir-Scale Stress State 2024 Annual Workshop Presentation

Aug 28, 2024
83.22 MB
Publicly accessible
This is a presentation on the Application of Advanced Techniques for Determination of Reservoir-Scale Stress State at FORGE by the University of Oklahoma, presented by Ahmad Ghassemi. This video discusses how magnitude and orientation of natural in-situ principal stresses at dept...
Authors
Ghassemi, A. et al Energy and Geoscience Institute at the University of Utah
geothermalenergyutah forgein-situ stressreservoir stress stateuniversity of oklahomadfitwellbore stressnormal-strike-slip faultgeomechanicscore testingvideopresentationegs

Utah FORGE 2-2439v2: Report on Predicting Far-Field Stresses Using Finite Element Modeling and Near-Wellbore Machine Learning for Well 16A(78)-32

Aug 30, 2024
973.4 kB
Publicly accessible
This report presents the far-field stress predictions at two locations along the vertical section of Utah FORGE Well 16A (78)-32 using a physics-based thermo-poro-mechanical model. Three principal stresses in far-field were obtained by solving an inverse problem based on the near-...
Authors
Lu, G. et al University of Pittsburgh
geothermalenergyutah forgein-situ stress estimationphysics-based modelingfinite element methodmachine learning modelthermo-poro-mechanical effectwell loggingvelocity-to-stress relationshipmachine learningfemreporttechnical report16a78-32mlegs2-2439v2principal stressstress predictionfar-fieldpre-cooling
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