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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: Slide-Hold-Slide Experiments on Gneiss at Increased Temperature

Jul 25, 2023
4.1 GB
Publicly accessible
Included are data from triaxial, single-inclined-fracture friction experiments. The experiments were performed with slide-hold-slide protocol on Utah FORGE gneiss at increased temperature. With a ~10 MPa normal stress, temperatures vary between experiments from room temperature u...
Authors
Eijsink, A. and Elsworth, D. Pennsylvania State University
geothermalenergyfrictionsingle inclined fractureslide-hold-slideacoustic dataacoustic emissionpassive acousticgeophysicsfracturereactivationgneissutah forgeegsfriction dataactive acousticvelocity data

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

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: 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: 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

Ionic Fluids for EGS: Thermohydraulic Flow Data for Alternative Geothermal Fluids

Sep 13, 2025
1.65 MB
Publicly accessible
This dataset contains thermohydraulic measurements of fluid flow through single and dual fracture systems under controlled laboratory conditions. Experiments were conducted at Oklahoma State University using various ionic and nonionic fluids, including deep eutectic solvents (DES)...
Authors
Maitra, E. et al Oklahoma State University
geothermalenergyfluid flow and heat transfer in fracturefracture flow distributionalternative geothermal fluidsionic fluid flow in fractureionic liquids as working fluidthermohydraulicsgeothermal fluidsfracture flowionic liquidsdual fracture systemsdeep eutetic solventsdeshigh-temperature testingpressure differentialflow rateraw dataegslaboratory datageochemistryengineered fluids

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 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

Applications of Fractured Continuum Model to Enhanced Geothermal System Heat Extraction Problems

May 06, 2014
5.77 MB
Publicly accessible
This paper describes the applications of the fractured continuum model to the different enhanced geothermal systems reservoir conditions. The capability of the fractured continuum model to generate fracture characteristics expected in enhanced geothermal systems reservoir environm...
Authors
Kalinina, E. et al Sandia National Laboratories
geothermalsimulationegsheat extractionfracturefractured continuum modelfracture continuumfracture characteristicsreservoir environmenthorizontal wellsvertical wells

CO2 Push-Pull Single Fault Injection Simulations

Sep 21, 2017
24.3 MB
Publicly accessible
ASCII text files containing grid-block name, X-Y-Z location, and multiple parameters from TOUGH2 simulation output of CO2 injection into an idealized single fault representing a dipping normal fault at the Desert Peak geothermal field (readable by GMS). The fault is composed of a ...
Authors
Borgia, A. et al Lawrence Berkeley National Laboratory
geothermalenergyco2 injectionfault characterizationfault imagingseismic imagingegstough2gmsfracturespermeable flow pathspermeability characterizationidentificationcarbon dioxideinjectionproductionfault sensitivityfault systemfracture systemrock propertiesfluid mechanicspressure transientstimulationreservoir

Summary Fracturing of Coso Samples with StimuFrac

Sep 06, 2016
61.24 kB
Publicly accessible
Lab-scale stimulation was performed on Coso samples obtained from a single core (1623 feet TVD, reservoir Coso CGC 18-27) using StimuFrac and control fluid in the absence of stimuli-responsive polymer.
Authors
Fernandez, C. Pacific Northwest National Laboratory
geothermalstimuli-responsivecosoeffective pressurelab-scale stimulationegsstimufracfracking fluidhydraulic fracturingfracture mechanismsoverpressurestimulationegs reservoir

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: 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 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

WISE-CASING: Surface Seismic Survey at Cymric Field, California Central Valley

Apr 02, 2018
31.04 MB
Publicly accessible
This test was conducted at the Chevron Cymric oilfield in the California central valley near Bakersfield. A reflected seismic signal was observed in all three components (x, y, z) of the 3-component Episensor geophone, as well as all phones on the single component array. The arriv...
Authors
Wu, Y. et al Lawrence Berkeley National Laboratory
geothermalenergyseismic datacymric oilfieldseismic signal3-component geophonescymric surfacebertical geophonesreflected waveegswellborecasingwise-casingintegritysensingassessmentgeophysicsseismicsurfacecymric

Fracture Sustainability Test, Pre and Post-Test Photomicrographs

Sep 26, 2016
212.12 MB
Publicly accessible
The primary objective of this research is to understand how different rock types, mineral and fluid compositions, and fracture surface textures determine the longevity of fracture apertures, so that selection of reservoir rock can be economically optimized to reduce future refract...
Authors
Dobson, P. et al Lawrence Berkeley National Laboratory
geothermalenergyfracturesustainabilityphotomicrographbrady welldesert peakbch-03dp 35-13xplwell datapre-testpost-testshear-inducedpermeabilityegsreservoirstripa graniteaperturegeologytemperaturebrineshear

Utah FORGE: Fluid Injection-Rate Controls on Seismic Moment from Laboratory Fault Reactivation Experiments

Sep 16, 2025
5.43 GB
Publicly accessible
This dataset contains experimental and acoustic data from shear reactivation tests that investigate the relationship between fluid-injection rate, pore pressure distribution, and seismic moment during laboratory fault slip. It includes raw mechanical data and acoustic emission rec...
Authors
Elsworth, D. et al Pennsylvania State University
geothermalenergyinduced seismicityegsgeomechanicsutah forgegranitoidlaboratory experimentsfault reactivationshear slipfluid injectioninjection ratepore pressurepore pressure distributionseismic momentacoustic emissionspermeabilitytriaxial testingshear stressaxial displacementpressure vesselmechinical datatime-series dataraw dataprocessed datamatlab

Utah FORGE: Development of Multi-Stage Fracturing System and Wellbore Tractor to Enable Zonal Isolation During Stimulation and EGS Operations in Horizontal Wellbores

Oct 05, 2022
4.59 MB
Publicly accessible
This paper discusses the progress on a project funded by the DOE Utah FORGE (Frontier Observatory for Research in Geothermal Energy) for the development of a subsurface heat exchanger for Enhanced Geothermal Systems (EGS) using unique casing sleeves cemented in place and are used ...
Authors
Fleckenstein, W. et al Colorado School of Mines
geothermalenergycompletionsleevestractorheat modelegsutah forgestimulationfracturingwellbore technologieswellbore technologyheat exchangergeothermoptimalfracoptimal

EGS Collab Experiment 1: Circulation Testing Processed data

Apr 01, 2021
129.85 MB
Publicly accessible
This submission includes processed and reduced data for circulation testing that was conducted at the 164' fracture on the 4850 ft level of the Sanford Underground Research Facility. The circulation tests were done to test the flow through the 164' fracture in the EGS Collab Exper...
Authors
Fu, P. et al Lawrence Livermore National Laboratory
geothermalenergyegs collabsurfsanford underground research facilityexperimentegscirculationthermal drawdownprocessed datadata processingpythoncodeinjection testinjection rateinjection pressureflowpressuretemperaturestimulation

EGS Collab Experiment 1: Core Logs

Apr 02, 2019
45.54 GB
Publicly accessible
Core logs from the EGS Collab project Experiment 1 for the stimulation (Injection) well (E1-I), the Production well (E1-P), and monitoring wells (E1-OT, E1-OB, E1-PST, E1-PSB, E1-PDT, and E1-PDB) on the 4850 Level of SURF (the Sanford Underground Research Facility), single PDF fil...
Authors
Dobson, P. et al Lawrence Berkeley National Laboratory
geothermalenergycoreboreholepoormansurfegscollabfracturese1-iinjection wellexperiment 1e1-pste1-obe1-pe1-ote1-psbe1-pdtlogsphotose1-pdbstimulationwellinjectionhydraulicmonitoringlogsamplefoliationfoldingfracturingfracturefoldfeatureshomestakesigma-v

Utah FORGE: EGS Reservoir Produced Fluids Geochemistry 2022-2024

Feb 26, 2025
1.38 MB
Publicly accessible
This dataset contains geochemical analyses of produced fluids from the Utah FORGE site, specifically from wells 16A(78)-32, 16B(78)-32, and 58-32, collected during various stimulation, flowback, and circulation tests conducted between 2022 and 2024. The data contains element conce...
Authors
Simmons, S. et al Energy and Geoscience Institute at the University of Utah
geothermalenergyutah forgegeochemistryproduced fluids16a78-3258-32circulation testsstimulationflowback waterflowback watersstimulation testsegsreservoir monitoringdissolved gasesmineral dissolutionfluid chemistrybrine compositionchemical geothermometry16b78-32

Utah FORGE: Green's Functions and Station Response Files for Moment Tensor Analysis

Oct 07, 2026
5.54 GB
Curated
This submission includes data accompanying the paper titled, "Isotropic components of microseismic moment tensors at Utah FORGE reveal a diversity of fluid pathway creation processes in EGS development." Included are the pre-calculated Green's functions used to calculate the momen...
Authors
Niemz, P. and Petersen, G. University Of Utah
geothermalenergyutah forgemoment tensorimpulse responsestimulationegsseismicgreen functioninversiongeophysicsmoment tensor inversionactive sourceprocessed data

EGS Collab Experiment 2: Distributed Fiber Optic Temperature Data (DTS)

Nov 08, 2022
2.77 GB
Publicly accessible
The EGS Collab Experiment took place at the Sanford Underground Research Facility at the Homestake gold mine in Lead, SD, USA. Distributed fiber optic sensing temperature data is included in this dataset for this experiment. A single loop of custom fiber package was grouted into ...
Authors
Rodriguez Tribaldos, V. et al Lawrence Berkeley National Laboratory
geothermalenergyegs collabsurfhydraulicfracturingstimulationsanford underground research facilityexperimentegsdfosfiber opticxt-dtstemperaturedtsexperiment 2distributed sensingmonitoringcharacterization

Utah FORGE: Neubrex Well 16B(78)-32 DAS Data April 2024

Oct 01, 2024
97.48 TB
Publicly accessible
This dataset comprises Distributed Acoustic Sensing (DAS) data collected from the Utah FORGE monitoring well 16B(78)-32 (the producer well) during hydraulic fracture stimulation operations conducted in April 2024. The data were acquired continuously over the stimulation period at ...
Authors
Jurick, D. et al Neubrex Energy Services (US), LLC
geothermalenergydasacoustic sensingmicroseismiccrosswell strain ratefracture driven interactionsfdidistributed acoustic sensinginjection allocationstrain rateutah forgeegsstimulation16b 78-3216a 78-32mircroseismicityneubrexraw datahdf5h5time gated
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