Preliminary Analysis of Stress in the Newberry EGS Well NWG 55-29

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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.

Citation Formats

TY - DATA AB - 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. AU - Davatzes, Nicholas C. A2 - Hickman, Stephen H. DB - Geothermal Data Repository DP - Open EI | National Renewable Energy Laboratory DO - KW - geothermal KW - EGS KW - enhanced geothermal system KW - Newberry KW - Oregon KW - NEWGEN KW - stress analysis KW - well data KW - enhanced geothermal systems KW - stress KW - publication KW - monitoring KW - 4D LA - English DA - 2011/01/01 PY - 2011 PB - National Energy Technology Laboratory T1 - Preliminary Analysis of Stress in the Newberry EGS Well NWG 55-29 UR - https://gdr.openei.org/submissions/737 ER -
Export Citation to RIS
Davatzes, Nicholas C., and Stephen H. Hickman. Preliminary Analysis of Stress in the Newberry EGS Well NWG 55-29. National Energy Technology Laboratory, 1 January, 2011, Geothermal Data Repository. https://gdr.openei.org/submissions/737.
Davatzes, N., & Hickman, S. (2011). Preliminary Analysis of Stress in the Newberry EGS Well NWG 55-29. [Data set]. Geothermal Data Repository. National Energy Technology Laboratory. https://gdr.openei.org/submissions/737
Davatzes, Nicholas C. and Stephen H. Hickman. Preliminary Analysis of Stress in the Newberry EGS Well NWG 55-29. National Energy Technology Laboratory, January, 1, 2011. Distributed by Geothermal Data Repository. https://gdr.openei.org/submissions/737
@misc{GDR_Dataset_737, title = {Preliminary Analysis of Stress in the Newberry EGS Well NWG 55-29}, author = {Davatzes, Nicholas C. and Hickman, Stephen H.}, abstractNote = {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.}, url = {https://gdr.openei.org/submissions/737}, year = {2011}, howpublished = {Geothermal Data Repository, National Energy Technology Laboratory, https://gdr.openei.org/submissions/737}, note = {Accessed: 2025-04-23} }

Details

Data from Jan 1, 2011

Last updated Nov 14, 2019

Submitted Mar 26, 2016

Organization

National Energy Technology Laboratory

Contact

Kelly Rose

Authors

Nicholas C. Davatzes

Temple University

Stephen H. Hickman

United States Geological Survey

DOE Project Details

Project Name Novel use of 4D Monitoring Techniques to Improve Reservoir Longevity and Productivity in Enhanced Geothermal Systems

Project Lead Lauren Boyd

Project Number FY11 AOP 11113

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