Newberry Well 55-29 Stimulation Data 2014

Abstract

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.

This submission includes all of the files and reports associated with the stimulation, pressure testing, and monitoring included in the scope of the project.

54 Resources

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Datasets associated with the same DOE project
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Additional Info

DOE Project Name: Newberry EGS Demonstration Project
DOE Project Number: EE0002777
DOE Project Lead: Lauren Boyd
DOI: 10.15121/1214129
Last Updated: 12 months ago
Sep
2015
Data from September, 2015
Submitted Sep 3, 2015

Contact

AltaRock Energy Inc


206.729.2400

Status

Publicly accessible License 

Authors

Trenton T. Cladhouhos
AltaRock Energy Inc
Susan Petty
AltaRock Energy Inc
Yini Nordin
AltaRock Energy Inc
Michael Moore
AltaRock Energy Inc
Kyla Grasso
AltaRock Energy Inc
Matthew E. Uddenberg
AltaRock Energy Inc
Michael W. Swyer
AltaRock Energy Inc
Eric L. Sonnethal
Lawrence Berkeley National Laboratory
J. Torquil Smith
Lawrence Berkeley National Laboratory
Jihoon Kim
Lawrence Berkeley National Laboratory
Li Yang
Lawrence Berkeley National Laboratory
Gillian R. Foulger
Foulger Consulting
Bruce R. Julian
Foulger Consulting

Keywords

geothermal, EGS, Diverter Material, Microseismic Monitoring, Temperature Monitoring, Groundwater Monitoring, stimulation data, Newberry, well data, injectivity, PTS data, Daily Report, operations summary, temperature at depth, well head pressure, DTS, temperature, depth, profile, Flow Test, WHT, WHP, flow rate, flow data, pressure data, backflow report, Geochemistry, groundwater, gas chemistry, field temperature, PLHS, NEWW, Pad-16, Pad-29, NN-17, NN-18, ground water, surface water, ELHS, PCG, VC, Pad 16, Pad 29, Publications, GRC, Stimulation, Results, paper, Demonstration, production well, AltaRock, SGW, Stanford, Presentation, Volcano, 2014, Newberry Volcano, Enhanced Geothermal System, TOUGHREACT, Thermal, Hydrological, Mechanical, Chemical, Pressure Fall-Off, Downhole pressure, 55-29, PTS, presssure, spinner, survey, chart, graph, report, data, monitoring data, seismic data, Seismic, induced seismisity, analysis, final report, Foulger Consulting, Injection, induced seismicity, mitigation, plan, addendum, event, locations, ISTI, raw, clustered, output, PNSN, Well Construction, wellbore, schematic, casing, hole depths, ultrasonic, flowrate, manual readings, Weir Box, MEQ, microseismicity

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