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DAS and Fiber-Optic Sensing×

Utah FORGE: Report on Fiber Optic Monitoring of August 2025 Circulation and Huff and Puff Tests

Mar 06, 2026
14.67 MB
Publicly accessible
This is a technical report on the acquisition, processing and analysis of fiber optic data collected in the Utah FORGE 16B(78)-32 well during cross well circulation tests and huff and puff testing that were executed by Texas Tech University and California Statue University Long Be...
Authors
Jurick, D. et al Neubrex Energy Services (US), LLC
geothermalenergyfiber opticsrfs dssdssdasdtstexas techcsulbhuff and puffcross well circulationthermal datawell 16b16b78-32distributed acoustic sensingdistributed strain sensingdistributed temperature sensinggeophysicsprocessed datatechnical report

Utah FORGE: 16B(78)-32 RFS DSS Strain Change Rate and Selected FDIs During 16A(78)-32 Stimulation

Mar 02, 2025
2.11 MB
Publicly accessible
This dataset contains strain change rate versus depth data acquired using a Rayleigh frequency shift (RFS) distributed strain sensing (DSS) system during hydraulic stimulation of well 16A(78)-32 at the Utah FORGE site in April 2024. The data were collected from an optical fiber in...
Authors
Jurick, D. et al Neubrex Energy Services (US), LLC
geothermalenergyutah forgeneubrexstrain frac logfiber opticsmicrostrainstraincumulative strain change ratestrain change16a78-3216b78-32egshydraulic stimulationfiber optic sensingstrain change raterfsdssrayleigh frequency shiftdepth profileprocessed datafrac loggeomechanicsfracture driven interactionsfdifrac hitsperforation clustercross-well strain monitoring

Brady's Geothermal Field Distributed Temperature Sensing Data

Mar 26, 2016
339.56 MB
Publicly accessible
This submission is an 8 day time history of vertical temperature measurements in Brady observation well 56-1 collected during the PoroTomo field experiment. The data was collected with a fiber-optic DTS system installed to a depth of 372 m below wellhead. DTS installation uses a d...
Authors
Patterson, J. University of Wisconsin
porotomodtsegsbradyfiber-opticstemperaturenevadaboreholeporoelastic tomographydistributed temperature sensinghot springs

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

Imperial Valley Dark Fiber Project (IVDF): Brawley EQ Cluster Catalog and DAS Event Dataset

Apr 08, 2026
4.13 GB
Publicly accessible
The Imperial Valley Dark Fiber (IVDF) project deployed a distributed acoustic sensing (DAS) interrogator on a pre-existing dark fiber cable running ~28 km between Calipatria and Imperial, California, passing through the Brawley Geothermal Field and surrounding Brawley Seismic Zone...
Authors
Ajo-Franklin, J. et al Rice University
geothermalenergydasdistributed acoustic sensingfiber optic sensingbrawley seismic zonesalton seaimperial valleybrawley fieldearthquakeseismicityevent cataloghdf5southern california seismic networkscsnwaveform recordingsswarmraw dataprocessed datageophysics

Utah FORGE 3-2535: Report on Geodetic Observations of Fracture Development During April 2024 Stimulations

Apr 28, 2025
1.29 MB
Publicly accessible
This report presents geodetic observations from the April 2024 stimulations at the Utah FORGE site, as part of LBNL FORGE Project 3-2535. It focuses on Distributed Strain Sensing (DSS) data from an optical fiber in well 16B, capturing localized strain linked to fracture propagatio...
Authors
Vasco, D. et al Lawrence Berkeley National Laboratory
geothermalenergyutah forgeegsdistributed strain sensingdssfiber-optic sensingmicroseismicityfracture stimulationgeodetic monitoringinsarsubsurface deformationhydraulic fracturingseismicityfracture modelingreservoir characterizationtechnical reportprocessed dataapril 2024stimulation

Utah FORGE: Fiber Optic Cumulative Strain Change and Strain Change Rate Data From Well 16A Stimulation at Well 16B

Nov 06, 2024
2.83 GB
Publicly accessible
This dataset includes Rayleigh Frequency Shift (RFS) Distributed Strain Sensing (DSS) cumulative strain change and change rate data. The data was acquired during the stimulation of Utah FORGE Well 16A(78)-32 in April 2024 via fiber installed in Well 16B(78)-32. The fiber optic da...
Authors
Khatara, S. et al Neubrex Energy Services (US), LLC
geothermalenergyh5hdf5rayleigh frequency shiftrfsdssdistributed strain sensingfiber optic sensingneubrexsr7000utah forgeegsstimulationfar field strain changestrain responsecumulative strainstrain change rate16a16bhydraulic fracturingprocessed datageophysicsstrainstrain ratefractures

Utah FORGE 4-2541: Final Report and Presentation on Optimization and Validation of a Plug and Perf Stimulation Treatment Design

Jul 15, 2025
219.13 MB
Publicly accessible
This dataset contains the final technical report and closeout presentation for Utah FORGE Project 4-2541, which focused on the optimization and validation of a multistage plug and perf stimulation treatment design for enhanced geothermal systems. The report documents drilling, com...
Authors
Norbeck, J. Fervo Energy
geothermalenergyplug and perfstimulationutah forgeegshorizontal drillingmonitoring wellfiber-optic monitoringdistributed acoustic sensingdasdistributed temperature sensingdtspressuretemperaturestimulation performanceflow allocationfracture geometryinjectivityinduced seismicitytechnical reporthydraulic stimulation

Distributed Acoustic Sensing (DAS) of Strain at Earth Tide Frequencies: Laboratory Tests

Jan 24, 2018
1.09 GB
Publicly accessible
The solid Earth strains in response to the gravitational pull from the Moon, Sun, and other planetary bodies. Measuring the flexure of geologic material in response to these Earth tides provides information about the geomechanical properties of rock and sediment. Such measurements...
Authors
Coleman, T. and Becker, M. California State University
geothermalenergyearth tidedasdistributed acoustic sensingfiber optics sensorslow frequency straingeomechanicsmeasurementmatlabegslab testsfracturecharacterizationhydraulicstimulation strain

Utah FORGE 3-2417: Low Frequency Distributed Acoustic Sensing Data from 16A/16B Stimulation April, 2024

Jul 23, 2025
37.13 GB
Publicly accessible
This dataset contains processed low-frequency Distributed Acoustic Sensing (LF-DAS) data collected between April 2 and April 12, 2024, during the Utah FORGE stimulation sequence involving wells 16A and 16B. The DAS measurements were acquired using a Silixa Carina interrogator unit...
Authors
Zhu, R. et al Rice University
geothermalenergyutah forgeegsenhanced geothermal systemsdistributed acoustic sensingdaslow-frequency dasfiber optic sensingsilixa carinafogmorewell 16bstimulationnanostraindfostime-series dataprocessed datasubsurface monitoringseismiclf-dasgeophysics

Utah FORGE: Well 16B(78)-32 Stimulation Hydraulic Fracturing In-Well DAS Fiber Optic Monitoring Report April 2024

Apr 26, 2024
10.46 MB
Publicly accessible
The report reviews results obtained by Neubrex using Distributed Acoustic Sensing (DAS) during the 16B(78)-32 hydraulic fracturing operations, Stages 1–4. It details DAS data acquisition, processing, and analysis, with a focus on acoustic noise signatures recorded during each st...
Authors
Jurick, D. et al Neubrex Energy Services (US), LLC
geothermalenergydasinjection allocationplug efficacyfrequency band extractionfbehydraulic fracturinghfneubrexdistributed acoustic sensinggeophysicsplug holdingpumping dataprocessed dataanalysistechnical reportutah forgeegspumping curve data16b78-32fiber optic monitoringstimulation

Cape EGS: Seismic Attenuation Profile and DAS Microseismic P-wave Spectra

Mar 17, 2026
15.25 GB
Publicly accessible
This dataset contains a 1D P-wave attenuation (Q) profile, distributed acoustic sensing (DAS) microseismic P-wave spectra, and derived source parameters from the Delano 1OB well at the Cape Modern geothermal field. The data were collected during a stimulation period from mid-Febru...
Authors
Chang, H. et al Lamont Doherty Earth Observatory
geothermalenergydasfiber-opticattenuationmicroseismicityp-wavesource parametersstress dropcapeforgeqspectraseismicegscape modernutah forgedistributed acoustic sensingp-wave attenuationquality factorbrune modelcorner frequencyseismic momentmoment magnitudewell logsdownhole measurementsraw dataprocessed datageomechanicsgeophysics

Utah FORGE 3-2417: DAS Microseismic Event Catalog from April 2024 Stimulation

Jun 09, 2025
9.11 MB
Publicly accessible
This data archive includes the relocated microseismic event catalog and 3D velocity model from DAS acquisition conducted during the 16A stimulations that took place between April 3rd and April 7th, 2024. The catalog consists of multiple CSV files, each named after the associated s...
Authors
Vera Rodriguez, I. et al Rice University
geothermalenergyutah forgedasmicroseismicegsenhanced geothermalfogmoreevent catalogcatalogmicroseismic eventsilixadistributed acoustic sensingidas16astimulationprocessed datavelocity modeldelano

Utah FORGE: Well 16B(78)-32 Distributed Temperature Sensing Data from April and May 2024

Jul 08, 2024
5.17 GB
Publicly accessible
This dataset includes Neubrex Energy Services fiber optic distributed temperature sensing (DTS) data from well 16B(78)-32 during stimulation and circulation, including interaction with well 16A(78)-32, during April and May 2024. The DTS data are stored in HDF5 file format and are ...
Authors
Jurick, D. and Guzik, A. Energy and Geoscience Institute at the University of Utah
geothermalenergy16b78-32stimulationfracingcirculation testtemperature datafiberoptic temperatureneubrexutah forgefiber opticfiber optic distributed temperature sensingdistributed temperature sensingdtsegshdf5

Utah FORGE: Reports on Northwestern Nevada Well Doublet Drilling and Testing by Fervo Energy

Sep 05, 2023
17.51 MB
Publicly accessible
These reports review Fervo Energy's construction of a commercial enhanced geothermal system (EGS). Fervo has qualified full functionality of the system through production testing at commercially relevant operating conditions. The project site is located in a nearfield setting ad...
Authors
Dadi, S. et al Fervo Energy
geothermalenergyfervo energynevada egsenhanced geothermal systemsegshorizontal drillingplug-and-perfutah forgecross-well strainplug-and-perforationhorizontal doubletblue mountainnevadafiber optic sensingwell stimulationfracingfrackingreportdoublet well systemdistributed fiber optic sensingdfosfeasibilityassessment

Filenames of Data from the Distributed Acoustic Sensing Experiment at Garner Valley, California

Jul 01, 2015
295.4 kB
Publicly accessible
In September 2013, an experiment using Distributed Acoustic Sensing (DAS) was conducted at Garner Valley, a test site of the University of California Santa Barbara (Lancelle et al., 2014). This submission lists all file names from Distributed Acoustic Sensing (DAS) data collected...
Authors
Lancelle, C. et al University of Wisconsin
geothermalporotomodasegsdistributed acoustic sensingfilenamesdirectivitysensitivityfiber-opticsground motionmeasurement

Brady's Geothermal Field DAS and DTS Surface and Borehole Array Metadata

Mar 31, 2016
3.71 MB
Publicly accessible
This metadata submission includes the coordinates of the DAS and DTS surface and borehole arrays, the list of file names, and the list of recorded files during testing at the PoroTomo Natural Laboratory at Brady Hot Spring in Nevada. Testing was completed during March 2016.
Authors
Fratta, D. University of Wisconsin
geothermaldasdtsfiber opticseismic arraytemperature arrayssurface sensorsborehole sensorscoordinatesfile listingfile listdata collection gapsdas datahorizontal arraymetadatautm coordinatesmetersborehole arrayboreholedistributed temperature sensingdistributed acoustic sensingseismic monitoringpassive monitoringgeophysics

Utah FORGE: Neubrex DTS Fiber Optic Temperature Data from Well 16B(78)-32 August 2025 Circulation and Huff-and-Puff Tests

Mar 28, 2026
447.3 MB
Publicly accessible
This dataset contains processed Neubrex Distributed Temperature Sensing data acquired in well 16B(78)-32 at the Utah FORGE site during August 2025 field operations. The data were collected during cross-well circulation testing from well 16A to well 16B and subsequent huff-and-puff...
Authors
Jurick, D. et al Neubrex Energy Services (US), LLC
geothermalenergytemperaturedtsthermalgradientfiber opticscoiled tubingutah forgeegsneubrexdistributed temperature sensingfiber optic sensingcailbrated temperaturehdf5prodml16b78-32circulation testhuff and puffprocessed data

Cape EGS: Frisco Pad Flow Test Microseismic Monitoring Catalog

Aug 06, 2025
837.65 kB
Awaiting release
This dataset contains a microseismic event catalog acquired during the Frisco pad flow test project led by Fervo Energy, conducted between July 17th Sept 5th 2024, near the Utah FORGE geothermal site. The microseismic events are located using data collected from various Utah FORGE...
Authors
Dadi, S. et al Fervo Energy
geothermalenergyegsenhanced geothermal systemmicroseismicmicroseismic monitoringinduced seismicitycatalogevent catalogfervofriscofrisco padflow testutah forgeevent locationsdasdistributed acoustic sensingfiber-optic sensinggeophonethree-component geophonedelano 1-obforge 16b78-3256-3278b-32origin timeevent depth

Utah FORGE: Neubrex Well 16B(78)-32 Stimulation Fiber Optic Monitoring Reports April and May, 2024

Apr 30, 2024
12.82 MB
Publicly accessible
These reports contain information on the distributed temperature sensing (DTS), distributed strain sensing (DSS), and pressure monitoring during the stimulation of Well 16(B)78-32 at Utah FORGE, in April and May 2024. Reports include information on data collection and calibrations...
Authors
Jurick, D. and Guzik, D. Neubrex Energy Services (US), LLC
geothermalenergyutah forgewell stimulationfracingtemperaturestrainstrain modelingfdineubrexpressure16b78-3216b78-32 stimulationutah forge 2024 stimulationdtsdssegstechnical reportreportprocessed data

Utah FORGE: Neubrex-Texas Tech-CSULB Circulation Fiber Optic DAS Data August 2025

Mar 29, 2026
Size unavailable
In progress
These are processed DAS files from the experimental period of August 2025 in which cross well circulation and huff and puff tests were performed.
Authors
Jurick, D. Neubrex Energy Services (US), LLC
geothermalenergydaslf daslfdasfbeacoustichuff and pufftexas techcsulb

Garner Valley DAS Metadata

Sep 10, 2013
21.69 kB
Publicly accessible
Metadata for the data collected at the NEES@UCSB Garner Valley Downhole Array field site on September 10-12, 2013 as part of the larger PoroTomo project.
Authors
Lancelle, C. University of Wisconsin
geothermaldistributed acoustic sensingfiber opticsporotomogarner valleydownhole arraymetadata

DEMO-FTES DAS Data

Jan 28, 2025
Size unavailable
In progress
? This data set is afrom distributed acoustic sensing (DAS) fiber installed by the EGS Collab Project in their 4100 testbed. This testbed is being used by the DEMO-FTES project to perform a fracture thermal energy storage (FTES) experiment in this testbed. The DAS data was collect...
Authors
Sirota, D. Pacific Northwest National Laboratory
geothermalenergydasthermal energy storageftes

Brady's Geothermal Field DAS Vibroseis Data

Mar 25, 2016
4.08 GB
Publicly accessible
The submitted data correspond to the monitored vibrations caused by a vibroseis seismically exciting the ground in the vertical direction and captured by the DAS horizontal and vertical arrays during the PoroTomo Experiment. The data also include a file with the acceleration recor...
Authors
Feigl, K. University of Wisconsin
geothermalporotomovibroseisdistributed acoustic sensingdasvertical dashorizontal dasaccelerometer responsegeophysicsactive sourceseismictruckgeophysicalnvsweepsegyseg-yh5hdf5

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
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