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"shear fractures"×

Fallon FORGE: Well 21-31 Wireline Logs

Mar 14, 2018
4.44 GB
Publicly accessible
Included are the following wireline logs from the Fallon FORGE Well 21-31: Ormat_Forge 21-31_8.5 inch section: FMI data in PDF and DLIS formats; MSCT data in PDF format; Pressure and Temperature data in PDF, LAS, and DLIS formats; Sonic Scanner data in PDF, DLIS, and LAS formats ...
Authors
Blankenship, D. Sandia National Laboratories
geothermalenergyfallonnevadaforgeegswirelinelastripplecombosonicresistivitydrill logswelllogwell logdrillslownessshearcompressionalstoneleycaliperdlistriple combopressuretemperaturemsctfmi

Utah FORGE: Hydraulic Fracture Width Determination Using Stoneley Wave Pressure Testing and Electrical Borehole Scans

Oct 06, 2023
1 MB
Publicly accessible
This report provides insights into Utah FORGE well 58-32's hydraulic fractures. It utilizes both electrical borehole scans from Schlumberger's Formation Micro-scanner Image tool (FMI) and Stoneley waves from a borehole sonic tool. These methods are combined in a comprehensive work...
Authors
Hornby, B. Hornby Geophysical Services, LLC
geothermalenergyfmistonely wavesformation micro-scanner image toolhydraulic fractureshydraulic fractureelectric borehole scansfracturesutah forgeutah forge well fracturespressure testingutah forge fracture reportborehole sonic toolegsfracture widthreportschlumbergerwave analysisworkflowfracture characterization58-32reservoir characterization

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

Wister, CA Downhole and Seismic Data

Dec 18, 2010
768.6 MB
Publicly accessible
This submission contains Downhole geophysical logs associated with Wister, CA Wells 12-27 and 85-20. The logs include Spontaneous Potential (SP), HILT Caliper (HCAL), Gamma Ray (GR), Array Induction (AIT), and Neutron Porosity (NPOR) data. Also included are a well log, Injection T...
Authors
Akerley, J. Ormat Nevada Inc
geothermalwistercaliforniadrillingwell datapressuretemperaturespinnerptsgeophysicsdownholewell loginjection test12-27boreholelithologymineral compositionmud loggas analysisimperial countyspontaneous potentialspgamma raygrneutron porositynporarray inductionaitimperial valleyresistivity85-20circulation3d seismicseismicgeophysical surveyreflectionp-wavemulti-component3ckirchhoff pre stackrefractionshear waveexplorationrisk reduction

Utah FORGE 3-2417: Fiber-Optic Geophysical Monitoring of Reservoir Evolution 2024 Annual Workshop Presentation

Aug 13, 2024
160.55 MB
Publicly accessible
This is a presentation on the Fiber-Optic Geophysical Monitoring of Reservoir Evolution by Rice University, presented by Jonathan Ajo-Franklin. This video slide presentation discusses the development of an end-to-end fiber-optic sensing approach for EGS to track the (1) initial zo...
Authors
Ajo-Franklin, J. et al Energy and Geoscience Institute at the University of Utah
geothermalenergyutah forgerice universityfracture creationegsconnected mechanically compliant fracturesflowing fracturesthmdasdas microseismicpresentationvideo

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: 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 2-2446: Closing the Loop Between In-Situ Stress Complexity and EGS Fracture Complexity 2024 Annual Workshop Presentation

Aug 26, 2024
70.79 MB
Publicly accessible
This is a presentation on Closing the Loop Between In-Situ Stress Complexity and EGS Fracture Complexity by Lawrence Livermore National Laboratory, presented by Matteo Cusini. The video discusses the combination of high-fidelity simulations and true-triaxial block fracturing tests...
Authors
Cusini, M. et al Energy and Geoscience Institute at the University of Utah
geothermalenergyutah forgein-situ stressegs fractureegs fracturesfracturesrock fractureshydraulic fracturesegs stimulationsfracingminifracdiagnostic fracture injection teststress magnitudesstress directionslawrence livermore national labratoryllnlegs

Utah FORGE: Updated Discrete Fracture Network Model 2025

Jul 24, 2025
3.3 GB
Publicly accessible
The Utah FORGE 2025 v1 DFN (fracture model) includes 131 discrete planar fractures which were identified using combined site data sets to capture flow pathways between wells 16A(78)-32 and 16B(78)-32 following stimulation activities in 2022 and 2024. It also includes stochastic fr...
Authors
Finnila, A. WSP
geothermalenergyutah forgedfndiscrete fracture networkfracturesfracture modellingfracture geometrywell 16a78-32well 16b78-32fracturefracture positionfracture sizeprocessed datapositionorientationsizeupdateplanar fracturesegsreservoir characterization

Utah FORGE 3-2417: Simulations for Distributed Acoustic Sensing Strain Signatures as an Indicator of Fracture Connectivity

Jan 01, 2023
21.99 MB
Publicly accessible
This dataset encompasses simulations of strain signatures from both hydraulically connected and "near-miss" fractures in enhanced geothermal systems (EGS). The files and results are presented from the perspective of digital acoustic sensing's (DAS) potential to differentiate the t...
Authors
Ward-Baranyay, M. et al Rice University
geothermalenergyforgeutah forgeegsmilfordutahcomsoldfnmatlabsimulationnear-miss fracturedasdistributed acoustic sensingmodelingstrainfogmoregeophysicshydrogeomechanicssub-nanostraincodestimulation

Utah FORGE 4-2492: Design and Implementation of Innovative Stimulation Treatments to Maximize Energy Recovery 2024 Annual Workshop Presentation

Sep 16, 2024
113.88 MB
Publicly accessible
This is a presentation on the Design and Implementation of Innovative Stimulation Treatments to Maximize Energy Recovery Efficiency by The University of Texas at Austin, presented by Mukul M. Sharma. This video slide presentation discusses the following objectives: (1) to place fr...
Authors
Sharma, M. Energy and Geoscience Institute at the University of Utah
geothermalenergyutah forgeegswell stimulationfracfracingfractureshorizontal wellfracture networkfracture sizeflowfracture areafracture treatmentsdfnsubsurface modelhydraulic fracturesvideopresentation

Utah FORGE 3-2417: Fiber-Optic Geophysical Monitoring of Reservoir Evolution 2023 Annual Workshop Presentation

Sep 08, 2023
54.51 MB
Publicly accessible
This is a presentation on the Fiber-Optic Geophysical Monitoring of Reservoir Evolution at the Utah FORGE Milford Site project by Rice University, presented by Prof. Jonathan Ajo-Franklin. The project's objective was to develop an end-to-end fiber-optic sensing approach for EGS to...
Authors
Ajo-Franklin, J. et al Rice University
geothermalenergyannual workshop2023utah forgeegsdistributed fiber optic sensingdfosdasflowing fracturesfracture creationwell pairegs performancemechanically compliant fracturesend-to-endegs fracture model

Utah FORGE 3-2418: Final Report on Wellbore Fracture Imaging Using Inflow Detection Measurements

Aug 22, 2025
31.96 MB
Publicly accessible
This report contains the results of research conducted to make measurements in the FORGE wells to map flowing fractures and estimate their flow magnitudes in real time. Implementation of the project had two substantial goals: (1) to locate flowing fractures at FORGE and estimate t...
Authors
Horne, R. Stanford University
geothermalenergyutah forgewellbore fracturesfracture mappinginflow detectionfluid enthalpyfracture networkflow magnitudeflow ratechemical detectorelectrochemical detectorstanford universitystanfordfinal reporttechnical report

Reservoir Stimulation Optimization with Operational Monitoring for Creation of EGS

Sep 25, 2013
65.42 MB
Publicly accessible
EGS field projects have not sustained production at rates greater than half of what is needed for economic viability. The primary limitation that makes commercial EGS infeasible is our current inability to cost-effectively create high-permeability reservoirs from impermeable, igne...
Authors
A., C. Pacific Northwest National Laboratory
geothermalfracturing fluidmonitoringxmtnmracousticrheologypermeabilityegsigneous rock

Utah FORGE: Well 16A(78)-32 Stage 1 Pressure Falloff Analysis

Aug 04, 2022
1.16 MB
Publicly accessible
This is an analysis of the pressure falloff in stage 1 fracture stimulation of FORGE well 16A(78)-32. The objective of this research is to understand the information content of the well stimulation data of FORGE Well 16A(78)-32. The Stage 1 step-rate test, a variant of the classic...
Authors
Kazemi, H. et al Colorado School of Mines
geothermalenergyutah forgemulti-ratestep-down ratemicro-fracturesmacro-fracturesfracturetracerflowbacktracer flowbackporoelastic propertiesstimulationformation stimulationmicro fracturesmacro fracturespermeabilitytestreportpressure falloffforgeutah

Fallon FORGE: Analogue Outcrop Samples

Mar 12, 2018
1.94 MB
Publicly accessible
Compilation of results for mechanical and fluid flow properties of analogue outcrop samples experimental data for compressional and shear wave velocities, tensile strengths, and compressive strengths. Outcrop location and sample orientation data are documented in a separate csv file.
Authors
Blankenship, D. et al Sandia National Laboratories
geothermalenergyforgeegsfallonnevadageologyanaloguehand samplesvetted-nooutcropmechanicsnv

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

Three-Component Long Offset Surface Seismic Survey Data Used to Find Large Aperture Fractures in Geothermal Resources San Emidio Geothermal Resource Area

Sep 15, 2010
794.98 MB
Publicly accessible
P and S-wave datasets and associated report studying the ability to use three-component long offset surface seismic surveys to find large aperture fractures in geothermal resources at the San Emidio geothermal resource area in Washoe County, Nevada.
Authors
Warren, I. U.S. Geothermal Inc.
geothermalsan emidiofracture apertureseismic surveyp-wave datas-wave datareportfracture detectionwashoe countynevadadatas-wavep-waveseismic data processingnvvibroseisactive sourcesweep

Structural Orientations Adjacent to Some Colorado Geothermal Systems

Feb 01, 2012
8.62 kB
Publicly accessible
Structural orientations (fractures, joints, faults, lineaments, bedding orientations, etc.) were collected with a standard Brunton compass during routine field examinations of geothermal phenomena in Colorado. Often multiple orientations were taken from one outcrop. Care was taken...
Authors
, R. Flint Geothermal, LLC
geothermalcoloradofaultsstructurearcgisgisshapefileshape filegeospatialgeospatial datadatafracturesbedding orientationlineamentsgeology

Investigation of Stimulation-Response Relationships for Complex Fracture Systems in Enhanced Geothermal Reservoirs

Jan 01, 2011
7.34 MB
Publicly accessible
Hydraulic fracturing is currently the primary method for stimulating low-permeability geothermal reservoirs and creating Enhanced (or Engineered) Geothermal Systems (EGS) with improved permeability and heat production efficiency. Complex natural fracture systems usually exist in ...
Authors
Fu, P. et al Lawrence Livermore National Laboratory
geothermalenhanced geothermal systemegsdiscrete fracture flowmodelingreservoir stimulationstimulationhydraulic fracturing

SMP and Fracture Modeling

Oct 01, 2021
8.59 MB
Publicly accessible
The problem of loss circulation in geothermal wells is inherently challenging due to high temperatures, brittle rocks, and presence of abundant fractures. Because of the inherent challenges in geothermal environments, there are limitations in selecting proper lost circulation mate...
Authors
Salehi, S. et al University of Oklahoma
geothermalenergylost circulationfracture sealingshape memory polymerdiscrete element methodsmodelingeconomicdrillingtechnologylost circulation materiallcmsmpprocessed datacfdcomputational fluid dynamicsdem

Water chemistry data and calculations for Fracture Sustainability Tests

Sep 30, 2020
1.26 MB
Publicly accessible
Measured cation, anion, and silica are presented as well as calculations evaluating mass balance performed for 4 fracture sustainability tests under EGS conditions: Stripa granite, Metamudstone, Rhyolitic Ashflow Tuff, and Silicified Rhyolitic Tuff. Calculations of charge balance ...
Authors
Kneafsey, T. et al Lawrence Berkeley National Laboratory
geothermalenergyfracturewater chemistryexperimentgranitedesert peakbradyegsreservoirfracture sustainability teststriparhyolitic ashflowtuff cationsilicified rhyoliticmetamudstonecationanionsilicamass balancepermeabilityshear-inducedgroundwater chemistrygroundwatergeochemistrymetasedimenteffluent

Fully Coupled Geomechanics and Discrete Flow Network Modeling of Hydraulic Fracturing for Geothermal Applications

Jan 01, 2011
5.25 MB
Publicly accessible
The primary objective of our current research is to develop a computational test bed for evaluating borehole techniques to enhance fluid flow and heat transfer in enhanced geothermal systems (EGS). Simulating processes resulting in hydraulic fracturing and/or the remobilization of...
Authors
Fu, P. et al Lawrence Livermore National Laboratory
geothermalgeothermal reservoir modelinghydraulic fracturingdiscrete flow networkfluid flowheat transferenhanced geothermal systemegsnon-isothermal unsaturated flow and transportnuft code

Utah FORGE: Well 58-32 Stimulation Conference Paper and Data

Apr 24, 2019
1.8 MB
Publicly accessible
The U.S. Department of Energy's (U.S. DOE) Frontier Observatory for Research in Geothermal Energy (FORGE) is a field laboratory that provides a unique opportunity to develop and test new technologies for characterizing, creating and sustaining Enhanced Geothermal Systems (EGS) in ...
Authors
Best, S. Energy and Geoscience Institute at the University of Utah
geothermalenergyutah forgeopen hole stimulationwell 58-32 stimulationwell 58-32utah geothermalgrgegsdisccrete fracture flowreservoir stimulationstimulationhydraulic fracturingphase 2cforgepressureflowbackratetemperaturehydraulicflowutahopen-holemilfordroosevelt hot springspre-processedupper perforationlower perforationmicroseismicitydasdistributed acoustic sensinggeophysics

EGS Collab Experiment 1: Baseline Cross-well Seismic

Apr 30, 2018
2.13 GB
Publicly accessible
As part of the geophysical characterization suite for the first EGS Collab tesbed, here are the baseline cross-well seismic data and resultant models. The campaign seismic data have been organized, concatenated with geometry and compressional (P-) & and shear (S-) wave picks, and ...
Authors
Schwering, P. et al Sandia National Laboratories
geothermalenergygeophysicsseismiccross-wellsgysegymodeldataresultsvelocityp-waves-waveelastic modulivisualizationcalculationinversionhydrofractureexperimentsurfsanford underground research facilityegsenhanced geothermal systemcollabboreholebaselinedensityshearbulkyoungsmodulusmodulistimulationhydraulicegs collab
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