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Title: Final Report: Development of a Chemical Model to Predict the Interactions between Supercritical CO2, Fluid and Rock in EGS Reservoirs

This report summarizes development of a coupled-process reservoir model for simulating enhanced geothermal systems (EGS) that utilize supercritical carbon dioxide as a working fluid. Specifically, the project team developed an advanced chemical kinetic model for evaluating important processes in EGS reservoirs, such as mineral precipitation and dissolution at elevated temperature and pressure, and for evaluating potential impacts on EGS surface facilities by related chemical processes. We assembled a new database for better-calibrated simulation of water/brine/ rock/CO2 interactions in EGS reservoirs. This database utilizes existing kinetic and other chemical data, and we updated those data to reflect corrections for elevated temperature and pressure conditions of EGS reservoirs.
 [1] ;  [1]
  1. University of Utah
Publication Date:
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Report Number(s):
DOE Contract Number:
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Research Org:
University of Utah
Sponsoring Org:
USDOE; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Geothermal Technologies Program (EE-2C)
Contributing Orgs:
University of Utah, University of Wyoming, Los Alamos National Laboratory, Idaho National Laboratory, Greenfire Energy, AltaRock Energy
Country of Publication:
United States
15 GEOTHERMAL ENERGY Geothermal; Enhanced Geothermal Systems; Reactive Transport; Carbon Dioxide EGS