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"stress inversion"×
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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

Seismic Analysis of Spatio-Temporal Fracture Generation During EGS Resource Development Full Moment Tensors and Stress Inversion Catalogs

Sep 26, 2018
51.03 kB
Publicly accessible
This submission contains 167 full moment tensor (MT) solutions for the seismicity observed two years prior and three years post start of injection activities. Also included are the azimuth and plunge angles for the three main stress directions sigma1, sigma 2 and sigma 3 at the P...
Authors
Gritto, R. et al Array Information Technology
geothermalenergyseismic moment tensorstress orientationstress changesinversiongeysersegsenhanced geothermalazimuthplungemincroseismicityinjectionstimulationreservoirthe geysershigh temperature reservoirfull mtsolutionspassiveseismicseismicitymicroseismicitymonitoringarraymomenttensorcataloganalysisinducedstressprati 32demonstrationfracturespatio-temporalgenerationresourcedevelopmenthydraulicfaultingfaultearthquakegeophysicsgeophysical

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 2439: Well 16B(78)-32 Field-Test Data from Mini-Frac Tests

Jul 02, 2023
2.73 GB
Publicly accessible
This submittal includes the field-test data collected during stress tests conducted in the Utah FORGE 16B(78)-32 wellbore to measure/characterize the stresses in the geothermal reservoir. The type of stress test performed is referred to as a mini-frac test or a micro-frac test. Th...
Authors
Kelley, M. et al Battelle Memorial Institute
geothermalenergygeomechanicsutahforgeminifracstressin-situ stressegsmini-fracstress testgeophysical logimage logacoustic logsonic logfracturinghydraulic fracturingreservoir stressinjectioncaliper logstemperature logsxmac16b78-32baker hughespacker element pressureflowbackpacker element

Utah FORGE: Focal Mechanism Catalog from Stage 3 of the April 2022 Stimulation Test

Sep 15, 2025
107.98 kB
Publicly accessible
This submission includes focal-mechanism solutions derived from the Utah FORGE April 2022 Stage-3 stimulation. Waveforms were extracted around each event (short windows bracketing origin times) from the downhole three-component arrays in wells 58-32, 78-32, and 56-32 and the surfa...
Authors
Mohammadi, A. et al Texas A and M University
geothermalenergyforgeutah forgeegsmilfordutahmagnitudestage 3hydraulic stimulationstrikedipkagan anglemoment-tensor inversionmtfitbayesian inversiongeophysicsgeophysical inversionfocal-mechanismsevent catalogdeep-learningamplitude ratios

Full Moment Tensor Inversion Software

Oct 31, 2018
Size unavailable
Publicly accessible
The link points to a website at NCEDC to download the full moment tensors inversion software The moment tensor analysis conducted in the current project is based on the full moment tensor model described in Minson and Dreger (2008). The software including source, examples and tut...
Authors
Gritto, R. and Dreger, D. Array Information Technology
geothermalenergyfull moment tensor inversioninversionsoftwaremoment tensoranalysisseismicexampletutorialgeophysicsgeophysicalfaultfaultingearthquakemicroseismicityinducedseismicitystimulationegsinjectionfracturemonitoringhydraulicgenerationpassive

EGS Collab Experiment 2: Shear Stimulation ERT Monitoring Data

Mar 06, 2023
139.08 MB
Publicly accessible
This repository contains the electrical resistivity tomography (ERT) monitoring data that was collected before, during, and after shear stimulation attempts were conducted at EGS Collab. These tests were carried out on the SURF 4100 level during Experiment 2 in March, 2022. Flow a...
Authors
Johnson, T. Pacific Northwest National Laboratory
geothermalenergyegs collabelectrical resistivity tomography4d-imaginge4dertexperiment 2raw datatime-lapse ertamuamldmudmltutltntsstimulation monitoringstimulationhydraulic pressure testsurfsurf 4100code3d modelingdata inversion

Simulations of Brady's-Type Fault Undergoing CO2 Push-Pull: Pressure-Transient and Sensitivity Analysis

Mar 09, 2018
9.74 MB
Publicly accessible
Input and output files used for fault characterization through numerical simulation using iTOUGH2. The synthetic data for the push period are generated by running a forward simulation (input parameters are provided in iTOUGH2 Brady GF6 Input Parameters.txt [InvExt6i.txt]). In gene...
Authors
Jung, Y. and Doughty, C. Lawrence Berkeley National Laboratory
geothermalenergyegsco2carbon dioxidepush-pullpressure-transient testingitough2sensitivity analysisinverse modelingparameter estimationinconpesttough2fault modelinggf6bradyfaultingfaultfracturecharacterizationstimulation

Bradys Geothermal Field MEQ Relocations 3D Velocity Models

Jul 01, 2015
186.79 kB
Publicly accessible
Hypocenters of local microearthquakes and 3D P and S-velocity models computed by simultaneous inversion of arrival times recorded by the Brady seismic network Nov 2010-Mar 2015.
Authors
Foxall, W. University of Wisconsin
geothermalmicroearthquake locationssimultaneous inversion3d seimic velocity modelsd seismic velocity modelmicroeathquake locationsmetadatameqmicroearthquakemicroseismicityrelocationsvelocitymodel3dporotomobradyseismicitybrady hot springsbradys

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

Utah FORGE 3-2417: DAS Microseismic Event Catalog from the 16A/16B Circulation Test, 2023

Jun 12, 2024
2.41 MB
Publicly accessible
This preliminary data archive includes the relocated microseismic event catalog, 1D velocity model, and methods report from DAS acquisition conducted during the Well 16A and 16B circulation test (July 19th and 20th, 2023) at Utah FORGE. The methods report describes all processing ...
Authors
Vera Rodriguez, I. et al Rice University
geothermalenergyforgeutah forgeegsenhanced geothermaldasdistributed acoustic sensingmicroseismicevent catalogevent detectionfogmoreinversiongeophysicsreal-time16a16bcirculation testconnectivitymethodsrelocationhierarchical clusteringprocessed data

Utah FORGE: Seismic DAS and Geophone Borehole Data Processing and 3D Imaging of Vp/Vs Ratio in the 2024 Stimulated Reservoir

Mar 17, 2025
1.28 MB
Publicly accessible
This dataset includes a final report and a 3D velocity model derived from seismic DAS and geophone borehole data collected during the April 2024 stimulation of the reservoir at Utah FORGE. The report details the processing of over 50,000 P and S-wave travel times used in a tomogra...
Authors
Gritto, R. and Jarpe, S. EMR Solutions and Technology
geothermalenergyutah forgeegsseismic borehole datadistributed acoustic sensingdasgeophone3d tomographytomographyp-wave velocitys-wave velocityvp/vs ratiovp/vsreservoir stimulationinduced seismicitywadati analysistravel-time inversioninversionfracturing fluids16a16bearthquake clustersubsurface imaginggeophysics

Utah FORGE: DAS Microseismic Event Records From April 2024 Stimulation Experiment

Mar 25, 2026
1.29 TB
In curation
This dataset contains distributed acoustic sensing (DAS) microseismic event triggers (raw waveforms) recorded during the 16A-16B stimulations conducted at the Utah FORGE site in April 2024. The dataset consists of raw waveform data provided in nanostrain rate units, accompanied by...
Authors
Ajo-Franklin, J. et al Rice University
geothermalenergyutah forgeenhanced geothermal systemsegsdistributed acoustic sensingdasfiber optic monitoringdfosmicroseismicforgewaveformraw datastimulationevent triggersfiber opticgeophysicsgeomechanicshydraulic stimulationhydraulic fracturingdas channel locationssgyseg-ysilixacarinafogmore

Utah FORGE 3-2417: DAS Microseismic Event and MT Catalog from the 16A/16B Circulation Test [Final, Relocated], 2023

May 19, 2025
1.34 MB
Publicly accessible
This data archive includes the relocated microseismic event catalog from distributed acoustic sensing (DAS) acquisition conducted during the 16A-16B circulation tests that took place in July 2023. These results update the catalog presented in GDR 1613 (the preliminary catalog, lin...
Authors
Vera Rodriguez, I. et al Rice University
geothermalenergyutah forgedasmicroseismicegsenhanced geothermalevent catalog16a16bcirculationcirculation testinversionseismic eventsevent detectionmtdistributed acoustic sensingprocessed datamicroseismic event catalogmeqfogmore

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 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

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

Utah FORGE 3-2417: DAS-derived Moment Tensors from the 16A/16B Stimulation April, 2024

Aug 22, 2025
1.41 MB
Publicly accessible
This dataset contains a catalog of moment tensors derived from distributed acoustic sensing (DAS) data acquired during stimulation of Utah FORGE Well 16A, conducted between April 3 and April 7, 2024. The data were generated as part of the FOGMORE (Fiber Optic MOnitoring for Reserv...
Authors
Vera Rodriguez, I. et al Rice University
geothermalenergyutah forgedasmicroseismicmoment tensorenhanced geothermalegsfogmoresilixa16a stimulationdistributed acoustic sensingfiber opticsseismic monitoringstimulationmicroseismicitycarinaidasseismic inversiongeophysicssubsurface characterizationseismic momentconfidence indexcondition numbermoment catalogprocessed data

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

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

Utah FORGE 2-2446: Closing the Loop Between In-situ Stress Complexity and EGS Fracture Complexity 2025 Workshop Presentation

Sep 18, 2025
129.72 MB
Publicly accessible
This is a presentation on the Closing the Loop Between In-situ Stress Complexity and EGS Fracture Complexity project by Lawrence Livermore National Laboratory, presented by Dr. Fan (Frank) Fei. The project's objective was to employ a combination of high-fidelity simulations and tr...
Authors
Kroll, K. and Fei, F. Lawrence Livermore National Laboratory
geothermalenergyutah forgeegs2025 annual workshopin-situ stresshydraulic fracturingfracture complexitytrue-triaxial testingstress characterizationpresentationpresentation recordingpresentation slidesreport

Utah FORGE: 2024 Stress-Shadow Seismic Survey

May 29, 2026
Size unavailable
Publicly accessible
This dataset documents the FORGE 2024 stress-shadow seismic survey done in collaboration with the EarthScope Consortium. Original seismic waveform data are archived through EarthScope/NSF SAGE dataset 24-021. This GDR submission provides a link to the original EarthScope archive. ...
Authors
Dvory, N. and Deo, M. The University Of Utah
geothermalenergyoriginal seismic waveformutahseismic survey2024 stimulationmicroseismicityforgestress-shadowegswaveformmetadataraw data

kISMET Final Report and Highlights

Oct 31, 2016
10 MB
Publicly accessible
The files in this submission describes the results of a series of stress measurement and hydraulic fracturing experiments conducted at the Sanford Underground Research Facility (SURF) in Lead, SD. This report describes the accomplishments of the kISMET (permeability (k) and Induce...
Authors
Oldenburg, C. et al Lawrence Berkeley National Laboratory
geothermalenergystressegshydraulic fracturingnumerical modelingsanford underground research facilitycorepoorman formationanalytical modelingsubterhydraulic stimulationkismetpermeabilityinduced seismicitymanagementsurfborehole

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
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