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.
Citation Formats
National Energy Technology Laboratory. (2011). Preliminary Analysis of Stress in the Newberry EGS Well NWG 55-29 [data set]. Retrieved from https://gdr.openei.org/submissions/737.
Davatzes, Nicholas C., Hickman, Stephen H. Preliminary Analysis of Stress in the Newberry EGS Well NWG 55-29. United States: N.p., 01 Jan, 2011. Web. https://gdr.openei.org/submissions/737.
Davatzes, Nicholas C., Hickman, Stephen H. Preliminary Analysis of Stress in the Newberry EGS Well NWG 55-29. United States. https://gdr.openei.org/submissions/737
Davatzes, Nicholas C., Hickman, Stephen H. 2011. "Preliminary Analysis of Stress in the Newberry EGS Well NWG 55-29". United States. https://gdr.openei.org/submissions/737.
@div{oedi_737, title = {Preliminary Analysis of Stress in the Newberry EGS Well NWG 55-29}, author = {Davatzes, Nicholas C., 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.}, doi = {}, url = {https://gdr.openei.org/submissions/737}, journal = {}, number = , volume = , place = {United States}, year = {2011}, month = {01}}
Details
Data from Jan 1, 2011
Last updated Nov 14, 2019
Submitted Mar 26, 2016
Organization
National Energy Technology Laboratory
Contact
Kelly Rose
Authors
Keywords
geothermal, EGS, enhanced geothermal system, Newberry, Oregon, NEWGEN, stress analysis, well data, enhanced geothermal systems, stress, publication, monitoring, 4DDOE 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