Newberry EGS Demonstration: Repairing and Re-Stimulating Well 55-29 Report
The Newberry Volcano EGS Demonstration in central Oregon, a 5 year project begun in 2010, tests recent technological advances designed to reduce the cost of power generated by EGS in a hot, dry well (NWG 55-29) drilled in 2008. First, the stimulation pumps used were designed to run for weeks and deliver large volumes of water at moderate well-head pressure. Second, to stimulate multiple zones, AltaRock developed thermo-degradable zonal isolation materials (TZIMs) to seal off fractures in a geothermal well to stimulate secondary and tertiary fracture zones. The TZIMs degrade within weeks, resulting in an optimized injection/ production profile of the entire well. Third, the project followed a project-specific Induced Seismicity Mitigation Plan (ISMP) to evaluate, monitor for, and mitigate felt induced seismicity. An initial stimulation was conducted in 2012 and continued for 7 weeks, with over 41,000 m3 of water injected. Further analysis indicated a shallow casing leak and an unstable formation in the open hole. The well was repaired with a shallow casing tieback and perforated liner in the open hole and re-stimulated in 2014. The second stimulation started September 23rd, 2014 and continued for 3 weeks with over 9,500 m3 of water injected. The well was treated with several batches of newly tested TZIM diverter materials and a newly designed Diverter Injection Vessel Assembly (DIVA), which was the main modification to the original injection system design used in 2012. A second round of stimulation that included two perforation shots and additional batches of TZIM was conducted on November 11th, 2014 for 9 days with an additional 4,000 m3 of water injected. The stimulations resulted in a 3-4 fold increase in injectivity, and PTS data indicates partial blocking and creation of flow zones near the bottom of the well.
Citation Formats
TY - DATA
AB - The Newberry Volcano EGS Demonstration in central Oregon, a 5 year project begun in 2010, tests recent technological advances designed to reduce the cost of power generated by EGS in a hot, dry well (NWG 55-29) drilled in 2008. First, the stimulation pumps used were designed to run for weeks and deliver large volumes of water at moderate well-head pressure. Second, to stimulate multiple zones, AltaRock developed thermo-degradable zonal isolation materials (TZIMs) to seal off fractures in a geothermal well to stimulate secondary and tertiary fracture zones. The TZIMs degrade within weeks, resulting in an optimized injection/ production profile of the entire well. Third, the project followed a project-specific Induced Seismicity Mitigation Plan (ISMP) to evaluate, monitor for, and mitigate felt induced seismicity. An initial stimulation was conducted in 2012 and continued for 7 weeks, with over 41,000 m3 of water injected. Further analysis indicated a shallow casing leak and an unstable formation in the open hole. The well was repaired with a shallow casing tieback and perforated liner in the open hole and re-stimulated in 2014. The second stimulation started September 23rd, 2014 and continued for 3 weeks with over 9,500 m3 of water injected. The well was treated with several batches of newly tested TZIM diverter materials and a newly designed Diverter Injection Vessel Assembly (DIVA), which was the main modification to the original injection system design used in 2012. A second round of stimulation that included two perforation shots and additional batches of TZIM was conducted on November 11th, 2014 for 9 days with an additional 4,000 m3 of water injected. The stimulations resulted in a 3-4 fold increase in injectivity, and PTS data indicates partial blocking and creation of flow zones near the bottom of the well.
AU - Cladouhos, Trenton T.
A2 - Petty, Susan
A3 - Nordin, Yini
A4 - Garrison, Geoff
A5 - Uddenberg, Matt
A6 - Swyer, Michael
A7 - Grasso, Kyla
DB - Open Energy Data Initiative (OEDI)
DP - Open EI | National Renewable Energy Laboratory
DO -
KW - geothermal
KW - EGS
KW - diverter material
KW - microseismic monitoring
KW - temperature monitoring
KW - groundwater monitoring
KW - NEWGEN
KW - stimulation
KW - Newberry
KW - repair
KW - well
KW - demonstration
KW - hydraulic
LA - English
DA - 2015/07/03
PY - 2015
PB - AltaRock Energy Inc
T1 - Newberry EGS Demonstration: Repairing and Re-Stimulating Well 55-29 Report
UR - https://data.openei.org/submissions/6968
ER -
Cladouhos, Trenton T., et al. Newberry EGS Demonstration: Repairing and Re-Stimulating Well 55-29 Report. AltaRock Energy Inc, 3 July, 2015, GDR. https://gdr.openei.org/submissions/775.
Cladouhos, T., Petty, S., Nordin, Y., Garrison, G., Uddenberg, M., Swyer, M., & Grasso, K. (2015). Newberry EGS Demonstration: Repairing and Re-Stimulating Well 55-29 Report. [Data set]. GDR. AltaRock Energy Inc. https://gdr.openei.org/submissions/775
Cladouhos, Trenton T., Susan Petty, Yini Nordin, Geoff Garrison, Matt Uddenberg, Michael Swyer, and Kyla Grasso. Newberry EGS Demonstration: Repairing and Re-Stimulating Well 55-29 Report. AltaRock Energy Inc, July, 3, 2015. Distributed by GDR. https://gdr.openei.org/submissions/775
@misc{OEDI_Dataset_6968,
title = {Newberry EGS Demonstration: Repairing and Re-Stimulating Well 55-29 Report},
author = {Cladouhos, Trenton T. and Petty, Susan and Nordin, Yini and Garrison, Geoff and Uddenberg, Matt and Swyer, Michael and Grasso, Kyla},
abstractNote = {The Newberry Volcano EGS Demonstration in central Oregon, a 5 year project begun in 2010, tests recent technological advances designed to reduce the cost of power generated by EGS in a hot, dry well (NWG 55-29) drilled in 2008. First, the stimulation pumps used were designed to run for weeks and deliver large volumes of water at moderate well-head pressure. Second, to stimulate multiple zones, AltaRock developed thermo-degradable zonal isolation materials (TZIMs) to seal off fractures in a geothermal well to stimulate secondary and tertiary fracture zones. The TZIMs degrade within weeks, resulting in an optimized injection/ production profile of the entire well. Third, the project followed a project-specific Induced Seismicity Mitigation Plan (ISMP) to evaluate, monitor for, and mitigate felt induced seismicity. An initial stimulation was conducted in 2012 and continued for 7 weeks, with over 41,000 m3 of water injected. Further analysis indicated a shallow casing leak and an unstable formation in the open hole. The well was repaired with a shallow casing tieback and perforated liner in the open hole and re-stimulated in 2014. The second stimulation started September 23rd, 2014 and continued for 3 weeks with over 9,500 m3 of water injected. The well was treated with several batches of newly tested TZIM diverter materials and a newly designed Diverter Injection Vessel Assembly (DIVA), which was the main modification to the original injection system design used in 2012. A second round of stimulation that included two perforation shots and additional batches of TZIM was conducted on November 11th, 2014 for 9 days with an additional 4,000 m3 of water injected. The stimulations resulted in a 3-4 fold increase in injectivity, and PTS data indicates partial blocking and creation of flow zones near the bottom of the well.},
url = {https://gdr.openei.org/submissions/775},
year = {2015},
howpublished = {GDR, AltaRock Energy Inc, https://gdr.openei.org/submissions/775},
note = {Accessed: 2025-05-05}
}
Details
Data from Jul 3, 2015
Last updated Jul 9, 2024
Submitted Apr 18, 2016
Organization
AltaRock Energy Inc
Contact
Trenton T. Cladouhos
206.729.2400
Authors
Original Source
https://gdr.openei.org/submissions/775Research Areas
Keywords
geothermal, EGS, diverter material, microseismic monitoring, temperature monitoring, groundwater monitoring, NEWGEN, stimulation, Newberry, repair, well, demonstration, hydraulicDOE Project Details
Project Name Newberry EGS Demonstration
Project Lead Lauren Boyd
Project Number EE0002777