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Title: Newberry EGS Demonstration: Phase 2.2 Report

Abstract

The Newberry Volcano EGS Demonstration is a five year field project designed to demonstrate recent technological advances for engineered geothermal systems (EGS) development. Advances in reservoir stimulation, diverter, and monitoring are being tested in a hot (>300 ºC), dry well (NWG 55-29) drilled in 2008. In the fall of 2014, 9,500m3 (2.5 million gallons) of groundwater were injected at a maximum wellhead pressure of 195 bar (2850 psi) over 4 weeks of hydraulic stimulation. Injectivity changes, thermal profiles and seismicity indicate that fracture permeability in well NWG 55-29 was enhanced. The fifteen-station microseismic array (MSA) located 398 seismic events, ranging in magnitude from M 0 to M 2.26. The next step is to drill a production well into the EGS reservoir. Advanced analysis of the microseismic data including hand picking of first arrivals, moment tensors, relative relocations, and velocity model improvements have resulted new higher-quality microseismic catalogs. These catalogs have been combined by relative weighting and gridding of seismic densities, resulting in probability-based maps and cross-sections, which have been used to plan a production well trajectory. The microseismic locations and times were also used to develop a reservoir diffusivity model, which can be used to evaluate stimulation plans such asmore » dual-well stimulation.« less

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2];  [3];  [4];  [4]
  1. AltaRock Energy, Seattle, WA (United States)
  2. PLS Environmental, Boulder, CO (United States)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  4. Foulger Consulting, Palo Alto, CA (United States)
Publication Date:
Research Org.:
AltaRock Energy, Seattle, WA (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Geothermal Technologies Office
Contributing Org.:
AltaRock Energy
OSTI Identifier:
1214834
Report Number(s):
DOE/EE/2777/3
DOE Contract Number:  
EE0002777
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
15 GEOTHERMAL ENERGY; EGS, enhanced geothermal system, Newberry, stimulation, microseismicity, hydroshearing

Citation Formats

Cladouhos, Trenton T., Petty, Susan, Swyer, Mike W., Nordin, Yini, Garrison, Geoff, Uddenberg, Matt, Grasso, Kyla, Stern, Paul, Sonnenthal, Eric, Foulger, Gillian, and Julian, Bruce. Newberry EGS Demonstration: Phase 2.2 Report. United States: N. p., 2015. Web. doi:10.2172/1214834.
Cladouhos, Trenton T., Petty, Susan, Swyer, Mike W., Nordin, Yini, Garrison, Geoff, Uddenberg, Matt, Grasso, Kyla, Stern, Paul, Sonnenthal, Eric, Foulger, Gillian, & Julian, Bruce. Newberry EGS Demonstration: Phase 2.2 Report. United States. https://doi.org/10.2172/1214834
Cladouhos, Trenton T., Petty, Susan, Swyer, Mike W., Nordin, Yini, Garrison, Geoff, Uddenberg, Matt, Grasso, Kyla, Stern, Paul, Sonnenthal, Eric, Foulger, Gillian, and Julian, Bruce. 2015. "Newberry EGS Demonstration: Phase 2.2 Report". United States. https://doi.org/10.2172/1214834. https://www.osti.gov/servlets/purl/1214834.
@article{osti_1214834,
title = {Newberry EGS Demonstration: Phase 2.2 Report},
author = {Cladouhos, Trenton T. and Petty, Susan and Swyer, Mike W. and Nordin, Yini and Garrison, Geoff and Uddenberg, Matt and Grasso, Kyla and Stern, Paul and Sonnenthal, Eric and Foulger, Gillian and Julian, Bruce},
abstractNote = {The Newberry Volcano EGS Demonstration is a five year field project designed to demonstrate recent technological advances for engineered geothermal systems (EGS) development. Advances in reservoir stimulation, diverter, and monitoring are being tested in a hot (>300 ºC), dry well (NWG 55-29) drilled in 2008. In the fall of 2014, 9,500m3 (2.5 million gallons) of groundwater were injected at a maximum wellhead pressure of 195 bar (2850 psi) over 4 weeks of hydraulic stimulation. Injectivity changes, thermal profiles and seismicity indicate that fracture permeability in well NWG 55-29 was enhanced. The fifteen-station microseismic array (MSA) located 398 seismic events, ranging in magnitude from M 0 to M 2.26. The next step is to drill a production well into the EGS reservoir. Advanced analysis of the microseismic data including hand picking of first arrivals, moment tensors, relative relocations, and velocity model improvements have resulted new higher-quality microseismic catalogs. These catalogs have been combined by relative weighting and gridding of seismic densities, resulting in probability-based maps and cross-sections, which have been used to plan a production well trajectory. The microseismic locations and times were also used to develop a reservoir diffusivity model, which can be used to evaluate stimulation plans such as dual-well stimulation.},
doi = {10.2172/1214834},
url = {https://www.osti.gov/biblio/1214834}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jul 03 00:00:00 EDT 2015},
month = {Fri Jul 03 00:00:00 EDT 2015}
}