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"fracture toughness"×

Utah FORGE: Temperature-Dependent Mode-I Fracture Toughness of Granite from SCB Tests Dataset and Methods Report

Feb 23, 2026
617.16 kB
Publicly accessible
This submission includes a methods report and an accompanying Excel dataset documenting temperature-dependent Mode-I fracture toughness (KIC) measurements for Utah FORGE granite obtained using semi-circular bending (SCB) tests in accordance with the ISRM Suggested Method. Testing ...
Authors
Dvory, N. and McLennan, J. University Of Utah
geothermalenergyfracturefracture toughnessforgeutah forgefracture propagationscb/nscbtemperaturelefmfpzegsmodel-ikicsemi-circular bendingscbnscbgranitehigh-temperature testingwell 58-32laboratory testingraw datatechnical reportgeomechanics

Utah FORGE 2-2446: Characterizing Stress Roughness Through Simulation of Hydraulic Fracture Growth

Jan 30, 2025
2.55 MB
Publicly accessible
This dataset covers work that investigated the apparent toughness anisotropy at Utah FORGE by comparing microseismic data with stress profiles from field measurements. The study analyzes the hydraulic fracture growth of Stage 3 at Well 16A(78)-32 using MEQ data, calibrating a nume...
Authors
Cusini, M. and Fei, F. Lawrence Livermore National Laboratory
geothermalenergyutah forgestress roughnesshydraulic fracturingmeqegsstress profilefield measurementshydraulic fracture growth16a78-32stage 3geostechnical reportprocessed datageophysics2-2446toughness anisotropyrock mechanics

Self-Healing and Re-Adhering Polymer-Cements with Improved Toughness

Nov 11, 2015
16.14 MB
Publicly accessible
Polymer-cement experiments were conducted in order to assess the chemical and thermal properties of various polymer-cement composites. This file set includes the following polymer-cement analyses: Polymer-Cement Composite Synthesis Polymer-Cement Interactions by Atomistic Simulat...
Authors
Fernandez, C. Pacific Northwest National Laboratory
geothermalself-healingcementpolymerwellbore integritywater to cementratiopolymer mass percentageatomistic simulationsradial distribution functioncompressive strengthfracture toughnesspolymer-cementftirfourier transform infrared spectroscopychemical analysissulfuric acidco2thermal shockbrinebulk thermal propertiesh2so4attackmineral acidresistanceconsistencyflowabillitydynamic yield strengthrheologypermeabilitysemedxelemental compositionmicrostructurecompositional analysisthermogravimetric analysistotal carbon analysistoctictgatotal organic carbontotal inorganic carbonx-ray diffractionwellbore cementtechnologyintegritywellbore

High-Temperature Self-Healing Geothermal Cement Composites

Mar 21, 2017
14.26 MB
Publicly accessible
A presentation with notes showing an overview of the last 6 months of the project on high-temperature self-healing inorganic cement composites. General approach, test methods and results for the self-healing cement composites are presented. Data include strength recoveries for 9 c...
Authors
Pyatina, T. and Sugama, T. Brookhaven National Laboratory
geothermalenergycement compositesself-healinghigh temperaturestrength recoverycrackfracturesealingbonding recoverycementtechnologyintegritywellboreinterface

Strength Recovery of Cement Composites in Steam and Carbonate Environments

Apr 28, 2016
3.99 MB
Publicly accessible
The data include compressive strength and Young's Modulus recoveries in steam and carbonate environments at 270 deg C for four chemically different cement composites after imposed controlled damaged.
Authors
Butcher, T. Brookhaven National Laboratory
geothermalcementstrength recoverycompressive strengthcement compositesself-healinggeothermal environmentalkaline-activated cementpozzolanic reactionscarbonationyoungs moduluselasticityelastic modulusstiffnessself-adheringre-adheringimproved toughnessgeothermal wellsinorganicintegrity enhancementcompositesteamcarbonateexperiment

Summary of Cement Formulations Tested by BNL for Self-Healing Ability Tests Conditions and Data

Sep 27, 2017
168.02 kB
Publicly accessible
A table of cement formulations tested by Brookhaven National Laboratory in 2016-2017 in the frame of the "Self-healing and Re-Adhering Cements with Improved Toughness at Casing and Formation Interfaces for Geothermal Wells" project.
Authors
Sugama, T. Brookhaven National Laboratory
geothermalenergyself-healingself-readheringcorrosion protectioncement compositesparameterchemicalcompressive strengthlap-shearcement-sheathbond testsbond strengthbond durabilityalkali activatedportland-cement-basedpozzolaniccementclaycasinginterfaceexperiment

Chemical, Calcium Phosphate Cements for Geothermal Wells Corrosion Protection, Bond Strength and Matrix Self-Healing

Sep 26, 2017
704 kB
Publicly accessible
The data set shows performance of economical calcium phosphate cement (Fondu) blended with fly ash, class F (FAF) in carbon steel corrosion protection tests (corrosion rate, corrosion current and potential), bond and matrix strength, as well as matrix strength recovery after impos...
Authors
Sugama, T. Brookhaven National Laboratory
geothermalenergycarbon steel corrosioncorrosion rateself-healinghigh temperaturehigh temphigh-tempcasingexperimentwellboreintegritycorrosion protectioncomposite

High-Temperature Inorganic Self-Healing Inorganic Cement Composites

Sep 13, 2017
1.42 MB
Publicly accessible
The data files below summarize the results from various experiments testing properties of high-temperature self-healing inorganic cement composites. These properties include cement-carbon steel bond strength, Young's modulus recovery, matrix recovery strength, and compressive stre...
Authors
Pyatina, T. and Sugama, T. Brookhaven National Laboratory
geothermalenergycarbon steelbond strengthcement-carbon steel bond strength recoveryhigh temperature cementself-healinghigh tempself healingstrength recoveryrepeated damagehigh temperaturescement compositesaged samplesclaypozzolanself-healing cementhigh temperaturepozzolanachemicalinorganiccementhigh-tempcompositeintegritytechnologywellbore

EGS Collab: Modeling and Simulation Working Group Teleconference Series (1-98)

Feb 04, 2020
11.93 GB
Publicly accessible
This submission contains the presentation slides and recordings from the first 98 EGS Collab Modeling and Simulation Working Group teleconferences. These teleconferences served three objectives for the project: 1) share simulation results, 2) communicate field activities and resul...
Authors
White, M. et al Pacific Northwest National Laboratory
geothermalenergyegs collabsurfhydraulicfracturingstimulationsanford underground research facilityexperimentegsmodelingtemperatureheat flowdtstracerpressureinjection testflowc-dots

Utah FORGE: Documentation on Discrete Fracture Network and Fracture Propagation Modelling

Feb 07, 2023
6.04 MB
Publicly accessible
This dataset includes reports and a slide presentation on discrete fracture network (DFN) generation and hydraulic fracture modeling at the Utah FORGE site. It details the characterization of natural fractures using well log and core data, as well as stochastic modeling techniques...
Authors
Sharma, M. and Cao, M. University of Texas
utah forgegeothermalfracture modellingdiscrete fracture modellingfracture propagation modellingutah forge fracture modellingdfnwell 16a78-32well 58-32fracture propagationegsenhanced geothermal systemsstimulationprocessed data

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

Images of Fracture Sustainability Test on Stripa Granite

May 11, 2014
12.2 MB
Publicly accessible
Images of the Stripa Granite core before and after the fracture sustainability test. Photos of fracture faces of Stripa Granite core.
Authors
Kneafsey, T. Lawrence Berkeley National Laboratory
geothermalfracturesustainabilitystripa granitefracture face imagescore imagesgranite fracturesgranite corelbnlgranitecoreimages

West Flank Coso FORGE: Natural Fracture Data

May 16, 2016
110.88 kB
Publicly accessible
Natural fracture data from wells 33-7, 33A-7,52A-7, 52B-7 and 83-11 at West Flank. Fracture orientations were determined from image logs of these wells (see accompanying submissions). Data files contain depth, apparent (in wellbore reference frame) and true (in geographic referenc...
Authors
Blankenship, D. Sandia National Laboratories
geothermalegsforgewest flanknatural fracturefracturingfracture mappingpicksfracturenaturalcoso

Utah FORGE 2-2446: Connecting In Situ Stress and Wellbore Deviation to Near-Well Fracture Complexity using Phase-Field Simulations

Jan 30, 2025
10.44 MB
Publicly accessible
This report presents a series of numerical experiments investigating the relationships among near-well fracture complexity, in situ stress conditions, and wellbore deviation. Using a phase-field modeling approach, the study explores how factors such as stress regimes, wellbore ori...
Authors
Cusini, M. and Fei, F. Lawrence Livermore National Laboratory
geothermalenergyutah forgephase fieldnumerical simulationnear wellbore fracture nucleationegsnear-wellfracture complexityin situ stresswellbore deviationphase-field modelingnumerical solutionsfracture nucleationgeos modelingstress regimesfracture propagationrock mechanicstechnical report

Chemical Fracture Detection During Triaxial Deformation Tests

Aug 19, 2025
613.72 MB
Publicly accessible
A set of triaxial tests with sandstone, limestone, and granite samples was conducted to measure fluid chemistry before, during, and after rock fracture. The dataset here includes: 1) five triaxial test data files (xlxs), 2) one file containing the measured test tube volumes for th...
Authors
Kibikas, W. Sandia National Laboratories
rock mechanicsfracture detectiongeothermalnational laboratorychemical fracture detectiontriaxial deformationsandstonelimestonegranitefluid chemistrydissolved ionsenhanced dissolutionfracture surface areafracture tracespore pressureconfining pressuredifferential stressinduced fracturereactive transport

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

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: Updated FMI Fracture Log from Well 16A(78)-32

Apr 17, 2024
308.48 MB
Publicly accessible
This dataset consists of an Excel spreadsheet detailing the fracture picks from a reinterpretation of the formation micro-imaging (FMI) log from Utah FORGE well 16A(78)-32. The provided information details fracture location, geometry, and type. Also included here is a link to the...
Authors
Handwerger, D. Energy and Geoscience Institute at the University of Utah
geothermalenergyfmi logmeasured well depthtrue verticle depthazimuthdip directionfracture typefracture datafractures16a16a78-32utah forgefmiegswell logprocessed data

Utah FORGE 3-2535: Final Report on Joint Electromagnetic, Seismic, and InSAR Imaging of Fracture Growth During EGS Resource Development

May 30, 2025
2 MB
Publicly accessible
This dataset contains the final technical report for the project Joint Electromagnetic/Seismic/InSAR Imaging of Spatial-Temporal Fracture Growth and Estimation of Physical Fracture Properties During EGS Resource Development, carried out from 2021 to 2025 by Lawrence Berkeley Natio...
Authors
Alumbaugh, D. Lawrence Berkeley National Laboratory
geothermalenergyutah forgeegsseismicelectromageneticgeodeticdistributed fiber-optic sensingdata acquisitiondata processingdata interpretationtechnical reportinsarfracture growthfracture propertiesgeophysicsgeomechanics

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

EGS Collab Experiment 1: Common Discrete Fracture Network

Sep 18, 2019
5.69 MB
Publicly accessible
This package includes data and models that support hydraulic fracture stimulation and fluid circulation experiments in the Sanford Underground Research Facility (SURF). A paper by Schwering et al. (2020) describes the deterministic basis for developing a "common" discrete fracture...
Authors
Schwering, P. et al Sandia National Laboratories
geothermalenergyegs collabsurfhydraulicfracturingstimulationsanford underground research facilityexperimentegsgeophysicsfracturenetworkdiscrete fracture networkdfnfluidflowmodeldatafluid circulationboreholeweepcoresystemenhanced geothermal systemsandia national laboratorieselectrical resistivitywellinjection testtracerdrilling

Seismic Analysis of Spatio-Temporal Fracture Generation During EGS Resource Development Deviatoric MT, Fracture Network, and Final Report

Sep 01, 2018
62.11 kB
Publicly accessible
This submission contains 167 deviatoric moment tensor (MT) solutions for the seismicity observed two years prior and three years post start of injection activities at The Geysers Prati 32 EGS Demonstration. Also included is a statistical representation of the properties of 751 fra...
Authors
Gritto, R. et al Array Information Technology
geothermalenergythe geysershigh temperature reservoirdeviatoric mt solutionsdeviatoricstresstensorcatalogmomentseismicityanalysisegsinjectioninducedmicroseismicityeventlocationshearstrainfracture networkfracture orientationfracture sizecaliforniacafaultfracturenetworkgeysersmicroseismichypocenterspassiveseismicmonitoringstimulationfinal reportinversionhydraulicfaultingearthquakegeophysicsgeophysical

Utah FORGE 3-2535: Joint Imaging of Fracture Growth and Estimation of Fracture Properties During EGS Development 2024 Annual Workshop Presentation

Aug 25, 2024
68.88 MB
Publicly accessible
This is a presentation on the Joint Electromagnetic/Seismic/InSAR Imaging of Spatial-Temporal Fracture Growth and Estimation of Physical Fracture Properties During EGS Resource Development by Lawrence Berkeley National Laboratory, presented by David Alumbaugh. This is a video pres...
Authors
Alumbaugh, D. Energy and Geoscience Institute at the University of Utah
geothermalenergyutah forgevemp toolegsenhanced geothermal systemsinsarinduced fracturespassive seismicemvertical electromagnetic profilingthmceletromagneticlbnllawrence berkley national laboratory

Data of High-Temperature Dynamic LCM Testing Setup

May 31, 2021
9.94 MB
Publicly accessible
Data from high temperature dynamic sealing tests for various fracture widths, at various temperatures (degrees F), with 5 wt.% bentonite-based mud containing various material fiber contents, at 100 to 400 psi differential pressure. Data from pressure test and evaluation of the dy...
Authors
Magzoub, M. et al University of Oklahoma
geothermal drillinglost circulationshape memory polymergranitefractureswellbore strengtheningsealabilitygeothermalenergylost circulation materialssealing pressurefiltrationsmart lcmsmpfracture sealingdrilling fluid additivestemperaturemodeldrillingwellboreexperimenttechnologyprocessed data

Utah FORGE 2-2446: Report on Phase Field Modelling of Near-Wellbore Hydraulic Fracture Nucleation and Propagation

Dec 31, 2023
5.37 MB
Publicly accessible
This is a report that describes the modelling of fracture nucleation and propagation in the near-wellbore region to understand the relationship between in situ stress and fracture patterns. A novel phase field formulation is described here, which represents fractures as a diffuse ...
Authors
Cusini, M. and Fei, F. Lawrence Livermore National Laboratory
geothermalenergyutah forgephase fieldegsmodeltechnical reportfracture nucleationfracture propagationnear-wellborephase field modelnumerical modelgeosfracturingnumerical resultsin situ stress
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