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Grain-Scale Failure in Thermal Spallation Drilling

Jan 01, 2012
646.35 kB
Publicly accessible
Geothermal power promises clean, renewable, reliable and potentially widely-available energy, but is limited by high initial capital costs. New drilling technologies are required to make geothermal power financially competitive with other energy sources. One potential solution is ...
Authors
Walsh, S. et al Lawrence Livermore National Laboratory
geothermalthermal spallation drillingthermomechanical processesmodelinggrain-scale mechanics

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

Assessing REE Concentrations in Geothermal and Oil and Gas Produced Waters: A Potential Domestic Source of Strategic Mineral Commodities

Mar 08, 2019
11.78 MB
Publicly accessible
The project team collected and analyzed 224 water samples and 101 matching rock samples. INL's improved method of measuring aqueous REEs allows study of samples previously thought too volume limited to measure. The study found that aqueous REEs occur at trace levels in all analyz...
Authors
Quillinan, S. et al University of Wyoming
geothermalenergyreeoil and gasgeochemistryrare earth elementsproduced watertracerecoveryresourcecommoditymineralaqueousconcentrationspatialspatially-dependentvariablechemistrysamplingcoproducedproduced fluid

EGS Collab Experiment 1: Accelerometer orientations

Aug 19, 2020
608.24 kB
Publicly accessible
Document describing the methodology used to determine the accelerometers' three-component orientations at the first EGS Collab testbed using Continuous Active-Source Seismic Monitoring (CASSM) data and hodogram analysis. Original submission: gdr.openei.org/submissions/1166
Authors
Hopp, C. et al Lawrence Berkeley National Laboratory
geothermalenergyegs collabmicroseismicsensor orientationaccelerometerorientationsurfsanford underground research facilityhydraulicfracturingexperimentstimulationmeso-scalemesoscalecrystalline rock3d sensorleadsouth dakotasta/lta triggering algorithmmicroseismicitypythongeospatial data3-ccassm datahodogram analysisprincipal component analysispcawellborewell datawell geometrybandpass filtercontinuous active-source seismic monitoringcassmthree-component

Utah FORGE: Well 58-32 Granite Core Thermal Properties Test Results Report (Oct. 2021)

Oct 29, 2021
1.12 MB
Publicly accessible
This is a presentaiton from Metarock Laboratories on the thermal properties of Utah FORGE well 58-32 granite core. The presentation includes pictures of core samples, core details for the samples (sample depths and size), sample thermal expansion test results, and radial velocity ...
Authors
Laboratories, M. Energy and Geoscience Institute at the University of Utah
geothermalenergyutah forgeegswell 58-32well 58-32 granite thermal propertiesutah forge granite thermal propertieswell 58-32 graniterock thermal propertiesthermal expansiontesttestinggranite testingcore testinggranite core testingradial velocity testingradial velocitythermal expansion testingutah forge granitethermal propertiesforgetemperaturepresentationtemperature monitoringwell datacharacterizationcore data

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

GLADE Project: Lessons Learned Document

Aug 28, 2026
16.29 MB
Curated
Lessons Learned document for the GLADE Geothermal Drilling project in the DJ Basin, Colorado. The Geothermal Limitless Approach to Drilling Efficiencies (GLADE) project was undertaken to evaluate whether advanced oil and gas drilling practices could be adapted to improve geotherm...
Authors
Rhodes, R. OXY USA Inc.
geothermalenergylessons learneddj basincoloradogladedrillingegs

GLADE Project: Pre-Drill Drilling Prognosis

Aug 28, 2026
156.12 MB
Publicly accessible
Pre-Drill drilling prognosis for the GLADE Project wells, GLADE East and GLADE West, in the DJ Basin Colorado. The Geothermal Limitless Approach to Drilling Efficiencies (GLADE) project was undertaken to evaluate whether advanced oil and gas drilling practices could be adapted to ...
Authors
Rhodes, R. OXY USA Inc.
geothermalenergydrilling prognosisgladedj basincoloradowell planswell construction

Utah FORGE: Report on the Thermal Properties of Wells 16A(78)-32 & 58-32 Granite

May 04, 2021
2.71 MB
Publicly accessible
This is a report from Metarock Laboratories on the thermal properties of Utah FORGE wells 16A(78)-32 & 58-32 granite. The report includes pictures of core samples, core details for the samples (where the sample was taken and the size of the sample), sample thermal expansion test r...
Authors
Laboratories, M. et al Energy and Geoscience Institute at the University of Utah
geothermalutah forgeegswell 16a78-32 granite thermal propertieswell 58-32 granite thermal propertiesutah forge granite thermal propertieswell 58-32 granitewell 16a78-32 graniterock thermal propertiesmetarock reportwell 58-32well 16a78-32granite thermal propertiesthermal expansiontestteststestinggranitesamplecore samplereportcore datahydrostaticradial velocitymeasurement

GLADE Project: Daily Mud Reports

Aug 28, 2026
73.1 MB
Curated
Files include daily mud reports for GLADE East and GLADE West wells in the DJ Basin, Colorado. Reports include daily mud data summaries for each well while drilling. The Mud Reports summarize mud composition and volumes each day throughout the project. The Geothermal Limitless A...
Authors
Rhodes, R. OXY USA Inc.
geothermalenergymud reportsdj basincoloradogladewell constructiondrillingdrilling technologyoperating data

Newberry EGS Demonstration: Repairing and Re-Stimulating Well 55-29 Report

Jul 03, 2015
35.99 MB
Publicly accessible
The Newberry Volcano EGS Demonstration in central Oregon, a 5 year project begun in 2010, tests recent technological advances designed to reduce the cost of power generated by EGS in a hot, dry well (NWG 55-29) drilled in 2008. First, the stimulation pumps used were designed to ru...
Authors
Cladouhos, T. et al AltaRock Energy Inc
geothermalegsdiverter materialmicroseismic monitoringtemperature monitoringgroundwater monitoringnewgenstimulationnewberryrepairwelldemonstrationhydraulic

Deep Direct-Use Feasibility Study Estimation of Reservoir Properties for the Tuscarora Sandstone

Dec 19, 2019
56.41 MB
Publicly accessible
This dataset contains black-and-white photographic images of individual core segments from well Preston 119 and photomicrographs taken of petrographic thin sections from well Clay 513. Minipermeameter measurement results of 2,260 samples for fracture and matrix permeability on cor...
Authors
McDowell, R. West Virginia University
geothermalappalachian basinwvuwvgestuscarora sandstonethin section analysisminipermeameterpermeabilityddudeep direct-usematrix permeabilitycore segmentsfracture analysisreservoir analysisphotomicrographsfracture permeabilityfeasibilityreservoirgeologicthermalpropertiesthicknessdepthcharacterizationwvegs

Utah FORGE 1-2551: Multi-Stage Fracturing System and Well Tractor to Enable Zonal Isolation During Stimulation and EGS Operations in Horizontal Wellbores 2023 Annual Workshop Presentation and Report

Sep 08, 2023
73.57 MB
Publicly accessible
Included here are a presentation recording, slides, and report on the Multi-Stage Fracturing System and Well Tractor to Enable Zonal Isolation During Stimulation and EGS Operations in Horizontal Wellbores project by Colorado School of Mines, presented by Dr. William W. Fleckenstei...
Authors
Fleckenstein, W. et al Colorado School of Mines
geothermalenergyannual workshop2023utah forgeegsstimulationheat-carrier fluidzonal isolationmultistage fracture stimulationinjectionflow controlhorizontal wellborestimulation technologylong-reach injectormulti-stage fracturing systemwell tractorreport

COMSOL Models and Simulation Results for Closed-Loop Geothermal Systems with Thermal Enhancements

Dec 15, 2023
91.3 MB
Publicly accessible
The Closed-Loop Geothermal Working Group and the National Renewable Energy Laboratory (NREL) have studied the performance of disc-shaped and linear thermal enhancements (conductive material introduced around a wellbore) in closed-loop geothermal systems. COMSOL models were develop...
Authors
Beckers, K. et al National Renewable Energy Laboratory
geothermalenergythermal enhancementscosmolsimulationmodelclosed-loopsteady-statetransientsimulation resultsassessmentclosed loop geothermal

Cornell University Borehole Observatory Wireline Geophysical Logs

Jul 21, 2026
8.84 MB
In progress
This data set includes wireline geophysical data from well Cornell ESH #1 (API 31109300030000), known as the Cornell University Borehole Observatory, or CUBO. It is a stratigraphic well drilled to characterize potential EGS resources. The Drilling commenced on June 21, 2022 and to...
Authors
Tester, J. et al Cornell University
geothermalenergycornell universitycuboddudeep direct usedistrict heatingdeep wellwell datadrillingesh-1api 31109300030000raw dataappalachian basin

Caldwell Ranch Exploration and Confirmation Project, Northwest Geysers, CA: 2011 Geothermal Technologies Peer Review Project Summary

Jan 01, 2011
51.4 kB
Publicly accessible
Caldwell Ranch Exploration and Confirmation Project, Northwest Geysers, CA: 2011 Geothermal Technologies Peer Review Project Summary The Caldwell Ranch Exploration and Confirmation Project was to drill, test, and confirm the present economic viability of the undeveloped geothermal...
Authors
Walters, M. Geysers Power Company, LLC
geothermalcaldwell ranchlow temperature zonehigh temperature zonesteamtracernon-condensable gaseswaste water injectionre-completionsidetrackreservoirgeysers fieldpeer reviewsonoma countycalifornia

Geomechanical Modeling for Thermal Spallation Drilling

Aug 24, 2011
382.95 kB
Publicly accessible
Wells for Engineered Geothermal Systems (EGS) typically occur in conditions presenting significant challenges for conventional rotary and percussive drilling technologies: granitic rocks that reduce drilling speeds and cause substantial equipment wear. Thermal spallation drilling,...
Authors
Walsh, S. et al Lawrence Livermore National Laboratory
geothermalgeomechanical modelingthermal spallation drillingengineered geothermal systemsegsgeodynnumerical modeling

EGS Collab: Modeling and Simulation Working Group Teleconference Series (99-128)

Jun 07, 2022
8.18 GB
Publicly accessible
This submission contains the presentation slides and recordings from EGS Collab Modeling and Simulation Working Group (MSWG) teleconferences number 99 through 128. These teleconferences served three objectives for the project: 1) share simulation results, 2) communicate field acti...
Authors
White, M. et al Pacific Northwest National Laboratory
geothermalenergyegs collabsurfhydraulicfracturingstimulationsanford underground research facilityexperimentegsconferenceteleconferencerecordingmeetingpresentationscientific discussionmswgmodeling and simulation working group

Updated Overpressures and Permeability Values for PNNL's StimuFrac Fluid

Apr 06, 2016
471.63 kB
Publicly accessible
A corrigendum was submitted to the journal of Geothermics on our article "Environmentally friendly, rheoreversible, hydraulic-fracturing fluids for enhanced geothermal systems" Shao et al Geothermics 58 (2015) 22-31. In the original article some permeability values were underesti...
Authors
Shao, H. et al Pacific Northwest National Laboratory
geothermalstimuli-responsivefracking fluidcorrigendumgeothermicshydraulic fracturingstimulationegsreservoirfluid

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

GLADE Project: Daily Drilling Reports

Aug 28, 2026
41.37 MB
Publicly accessible
Files include daily operational and drilling reports for GLADE East and GLADE West wells in the DJ Basin of Colorado. Reports include drilling summaries for work done and progress made daily for each well. There is a companion Final Drilling Report that summarizes some of the data...
Authors
Rhodes, R. OXY USA Inc.
geothermalenergygladedj basincolorado geothermaldrilling

Hawaii Play Fairway Analysis: Lanai Daily Drilling Reports

Jul 05, 2019
452.14 kB
Publicly accessible
The Hawaii Play Fairway Project deepened an already existing water well in Palawai Basin, Lanai island. Lanai Well #10 was deepened from 427 m to ~1057 m, with nearly continuous rock core collected. Spanning the dates from May 13 to July 5, 2019, the daily drilling reports of Lana...
Authors
Thomas, D. and Lautze, N. University of Hawaii
geothermalenergylanaigroundwaterhawaiiwaterwellcore photosdrillingdrilling datadrilling logspalawai basindatareport

Deep Direct-Use Feasibility Study Computed Tomography (CT)-scanned data Analysis for the Tuscarora Sandstone at the National Energy Technology Laboratory

Jan 10, 2020
40.99 GB
Publicly accessible
The computed tomography (CT) facilities at the National Energy Technology Laboratory (NETL) Morgantown, West Virginia site were used to characterize core of the Tuscarora Sandstone from a vertical well in Preston County WV, the Preston-119 from a depth of 7,165 to 7,438 ft. The pr...
Authors
Brown, S. et al West Virginia University
geothermalenergyappalachian basinwvuwvgestuscarora sandstonecomputed tomographyimage jctct scannercharacterizationcore sampleslithologydensity valuesddudeep direct usefeasibilitycorepres-119preston 119clay 513harrison 79fracture volume

Structural and Tectonic Controls of Geothermal Activity in the Basin and Range Province

Nov 30, 2012
303.53 kB
Publicly accessible
We are conducting an inventory of structural settings of geothermal systems (>400 total) in the extensional to transtensional Great Basin region of the western USA. A system of NW-striking dextral faults known as the Walker Lane accommodates ~20% of the North American-Pacific plat...
Authors
Faulds, J. et al University of Nevada
geothermalgreat basinbasin and rangewalker lanestructural controlsstrain ratestectonicsnevadawestern usacataloguefaultingfaultsstructural settingstructural geology

Utah FORGE 3-2535: Compilation of Geodetic Data and Estimation of Associated Deformation

Apr 29, 2022
17.77 MB
Publicly accessible
Report on possible geodetic signature of the 3 stimulations in April 2022 as well as a comparison with existing InSAR data gathered over the site before, during, and after the stimulation. In geothermal production it is important to understand the existing stress field and the cha...
Authors
Vasco, D. et al Lawrence Berkeley National Laboratory
geothermalenergyinsarground deformationcompressional velocity modelegsremote sensingwell characterizationwell 16awell 16butah forge
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