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Preliminary Analysis of Stress in the Newberry EGS Well NWG 55-29
As part of the planning for stimulation of the Newberry Volcano Enhanced Geothermal Systems (EGS) Demonstration project in Oregon, a high-resolution borehole televiewer (BHTV) log was acquired using the ALT ABI85 BHTV tool in the slightly deviated
NWG 55-29 well. The image log reveals an extensive network of fractures in a conjugate set striking approximately N-S and dipping 50 deg that are well oriented for normal slip and are consistent with surface-breaking regional normal faults in the vicinity. Similarly,
breakouts indicate a consistent minimum horizontal stress, Shmin, azimuth of 092.3 +/- 17.3 deg. In conjunction with a suite of geophysical logs, a model of the stress magnitudes constrained by the width of breakouts at depth and a model of rock strength independently indicates a predominantly normal faulting stress regime.
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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[ "019:20" ] |
| contactPoint |
{ "fn": "Kelly Rose", "@type": "vcard:Contact", "hasEmail": "mailto:kelly.rose@netl.doe.gov" } |
| dataQuality |
true
|
| description | As part of the planning for stimulation of the Newberry Volcano Enhanced Geothermal Systems (EGS) Demonstration project in Oregon, a high-resolution borehole televiewer (BHTV) log was acquired using the ALT ABI85 BHTV tool in the slightly deviated NWG 55-29 well. The image log reveals an extensive network of fractures in a conjugate set striking approximately N-S and dipping 50 deg that are well oriented for normal slip and are consistent with surface-breaking regional normal faults in the vicinity. Similarly, breakouts indicate a consistent minimum horizontal stress, Shmin, azimuth of 092.3 +/- 17.3 deg. In conjunction with a suite of geophysical logs, a model of the stress magnitudes constrained by the width of breakouts at depth and a model of rock strength independently indicates a predominantly normal faulting stress regime. |
| distribution |
[ { "@type": "dcat:Distribution", "title": "GRC Paper.pdf", "format": "pdf", "accessURL": "https://gdr.openei.org/files/737/davatzes-and-hickman-2011.pdf", "mediaType": "application/pdf", "description": "Preliminary Analysis of Stress in the Newberry EGS Well NWG 55-29" } ] |
| identifier | https://data.openei.org/submissions/6954 |
| issued | 2011-01-01T07:00:00Z |
| keyword |
[ "4D", "EGS", "NEWGEN", "Newberry", "Oregon", "enhanced geothermal system", "enhanced geothermal systems", "geothermal", "monitoring", "publication", "stress", "stress analysis", "well data" ] |
| landingPage | https://gdr.openei.org/submissions/737 |
| license | https://creativecommons.org/licenses/by/4.0/ |
| modified | 2019-11-14T18:58:18Z |
| programCode |
[ "019:006" ] |
| projectLead | Lauren Boyd |
| projectNumber | FY11 AOP 11113 |
| projectTitle | Novel use of 4D Monitoring Techniques to Improve Reservoir Longevity and Productivity in Enhanced Geothermal Systems |
| publisher |
{ "name": "National Energy Technology Laboratory", "@type": "org:Organization" } |
| spatial |
"{"type":"Polygon","coordinates":[[[-121.4333333,43.51666667],[-121.0333333,43.51666667],[-121.0333333,43.91666667],[-121.4333333,43.91666667],[-121.4333333,43.51666667]]]}"
|
| title | Preliminary Analysis of Stress in the Newberry EGS Well NWG 55-29 |
