Utah FORGE 2439: A Multi-Component Approach to Characterizing In-Situ Stress
Core-based in-situ stress estimation, Triaxial Ultrasonic Velocity (labTUV) data, and Deformation Rate Analysis (DRA) data for Utah FORGE well 16A(78)-32 using triaxial ultrasonic velocity and deformation rate analysis. Report documenting a multi-component approach to characterizing in-situ stress at the U.S. DOE FORGE EGS site: laboratory, modeling and field measurement.
Core-based methods for in-situ stress estimation were applied using samples from 5 intervals within the Utah FORGE 16A(78)-32 well. At three of these locations, Triaxial Ultrasonic Velocity (labTUV) tests were performed, resulting in experimentally-determined relationships between wave velocities and stresses. Non-monotonic increase in the velocity-stress relationships are inferred provide evidence of stress history and are therefore used to estimate in-situ stress magnitudes. Additionally, Deformation Rate Analysis (DRA) tests were run on core plugs from various orientations at each of the 5 sampling locations. These, too, provide evidence of stress history based on stress-strain behavior. A novel Weight of Evidence (WoE) method was developed as a means of synthesizing in-situ stress evidence from these two types of tests. Results indicate the minimum horizontal stress gradient ranges from 0.58 psi/ft to 0.69 psi/ft, with 4 of the 5 values between 0.66 psi/ft and 0.69 psi/ft. The vertical stress gradient ranges from 1.05 psi/ft to 1.12 psi/ft, with 4 of the 5 zones given results between 1.09 psi/ft and 1.12 psi/ft. The maximum horizontal stress gradient ranges from 0.98 psi/ft to 1.34 psi/ft, with 4 of the 5 zones falling between 0.98 psi/ft and 1.24 psi/ft. The stress regime thus appears to be on the edge between normal faulting and strike-slip faulting, potentially flipping back and forth between the two regimes due to variability of rock properties, structures such as faults, and/or thermal anomalies.
Complete Metadata
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|---|---|
| accessLevel | public |
| bureauCode |
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| contactPoint |
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"fn": "Mark Kelley",
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"hasEmail": "mailto:kelleym@battelle.org"
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| description | Core-based in-situ stress estimation, Triaxial Ultrasonic Velocity (labTUV) data, and Deformation Rate Analysis (DRA) data for Utah FORGE well 16A(78)-32 using triaxial ultrasonic velocity and deformation rate analysis. Report documenting a multi-component approach to characterizing in-situ stress at the U.S. DOE FORGE EGS site: laboratory, modeling and field measurement. Core-based methods for in-situ stress estimation were applied using samples from 5 intervals within the Utah FORGE 16A(78)-32 well. At three of these locations, Triaxial Ultrasonic Velocity (labTUV) tests were performed, resulting in experimentally-determined relationships between wave velocities and stresses. Non-monotonic increase in the velocity-stress relationships are inferred provide evidence of stress history and are therefore used to estimate in-situ stress magnitudes. Additionally, Deformation Rate Analysis (DRA) tests were run on core plugs from various orientations at each of the 5 sampling locations. These, too, provide evidence of stress history based on stress-strain behavior. A novel Weight of Evidence (WoE) method was developed as a means of synthesizing in-situ stress evidence from these two types of tests. Results indicate the minimum horizontal stress gradient ranges from 0.58 psi/ft to 0.69 psi/ft, with 4 of the 5 values between 0.66 psi/ft and 0.69 psi/ft. The vertical stress gradient ranges from 1.05 psi/ft to 1.12 psi/ft, with 4 of the 5 zones given results between 1.09 psi/ft and 1.12 psi/ft. The maximum horizontal stress gradient ranges from 0.98 psi/ft to 1.34 psi/ft, with 4 of the 5 zones falling between 0.98 psi/ft and 1.24 psi/ft. The stress regime thus appears to be on the edge between normal faulting and strike-slip faulting, potentially flipping back and forth between the two regimes due to variability of rock properties, structures such as faults, and/or thermal anomalies. |
| distribution |
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{
"@type": "dcat:Distribution",
"title": "DRA.zip",
"format": "zip",
"accessURL": "https://gdr.openei.org/files/1438/DRA.zip",
"mediaType": "application/zip",
"description": "Deformation Rate Analysis (DRA) data for Utah FORGE well 16A(78)-32 organized by zone, each containing a data sheet describing specimen dimensions and loading sequence, INSTRON data giving load vs time, data used to compute axial displacement, and charts generated from the data."
},
{
"@type": "dcat:Distribution",
"title": "Core-Based In-Situ Stress Estimation for Utah FORGE Well 16A78-32.pdf",
"format": "pdf",
"accessURL": "https://gdr.openei.org/files/1438/Pitt-Battelle%202439%20Milestone%202.1%20Report%20For%20Submission.pdf",
"mediaType": "application/pdf",
"description": "Core-based methods for in-situ stress estimation were applied using samples from 5 intervals within the Utah FORGE 16A(78)-32 well. At three of these locations, Triaxial Ultrasonic Velocity (TUV) tests were performed, resulting in experimentally-determined relationships between wave velocities and stresses.Additionally, Deformation Rate Analysis (DRA) tests were run on core plugs from various orientations at each of the 5 sampling locations. More information in the document."
},
{
"@type": "dcat:Distribution",
"title": "README DRA and TUV Data for Well 16A78-32.docx",
"format": "docx",
"accessURL": "https://gdr.openei.org/files/1438/README%20DRA%20and%20TUV%20Data%20for%20Well%2016A78-32.docx",
"mediaType": "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
"description": "README document describing the organization of the Triaxial Ultrasonic Velocity (labTUV) and Deformation Rate Analysis (DRA) data and providing additional information and context."
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{
"@type": "dcat:Distribution",
"title": "labTUV Data.zip",
"format": "zip",
"accessURL": "https://gdr.openei.org/files/1438/labTUV.zip",
"mediaType": "application/zip",
"description": "Triaxial Ultrasonic Velocity (labTUV) data for Utah FORGE well 16A(78)-32, containing raw waveform data, summary data and charts for each of the 3 zone tests."
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|
| DOI | 10.15121/1923003 |
| identifier | https://data.openei.org/submissions/8504 |
| issued | 2022-12-13T07:00:00Z |
| keyword |
[
"16A78-32",
"Characterization",
"DRA",
"Deformation Rate Analysis",
"EGS",
"FORGE",
"Field Measurement",
"In-Situ Stress",
"Laboratory",
"Modeling",
"Stress Test",
"TUV",
"Triaxial Ultrasonic Velocity",
"Utah FORGE",
"Weight of Evidence",
"Well Data",
"WoE",
"energy",
"geophysics",
"geothermal"
]
|
| landingPage | https://gdr.openei.org/submissions/1438 |
| license | https://creativecommons.org/licenses/by/4.0/ |
| modified | 2025-02-18T19:03:19Z |
| programCode |
[
"019:006"
]
|
| projectLead | Lauren Boyd |
| projectNumber | EE0007080 |
| projectTitle | Utah FORGE |
| publisher |
{
"name": "Battelle Memorial Institute",
"@type": "org:Organization"
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| title | Utah FORGE 2439: A Multi-Component Approach to Characterizing In-Situ Stress |
