Chemical Impact of Elevated CO2 on Geothermal Energy Production
Numerical simulations have shown that the use of supercritical CO2 instead of water as a heat transfer fluid yields significantly greater heat extraction rates for geothermal energy. If this technology is implemented successfully, it could increase geothermal energy production and offset atmospheric emissions of greenhouse gases. However, the impact of geochemical reactions between acidic waters in equilibrium with supercritical CO2 and the reservoir rock have not been evaluated. At issue are enhanced rock-water interactions that may reduce reservoir porosity and permeability and may exacerbate downstream scaling.
The publications included in this submission aim to assess the geochemical impact of CO2 on geothermal energy production by analyzing the geochemistry of existing geothermal fields with elevated natural CO2, to measure realistic rock-water rates for geothermal systems using laboratory and field-based experiments, and to develop reactive transport models using the filed-based rates to simulate production scale impacts.
Citation Formats
TY - DATA
AB - Numerical simulations have shown that the use of supercritical CO2 instead of water as a heat transfer fluid yields significantly greater heat extraction rates for geothermal energy. If this technology is implemented successfully, it could increase geothermal energy production and offset atmospheric emissions of greenhouse gases. However, the impact of geochemical reactions between acidic waters in equilibrium with supercritical CO2 and the reservoir rock have not been evaluated. At issue are enhanced rock-water interactions that may reduce reservoir porosity and permeability and may exacerbate downstream scaling.
The publications included in this submission aim to assess the geochemical impact of CO2 on geothermal energy production by analyzing the geochemistry of existing geothermal fields with elevated natural CO2, to measure realistic rock-water rates for geothermal systems using laboratory and field-based experiments, and to develop reactive transport models using the filed-based rates to simulate production scale impacts.
AU - Carroll, Susan
A2 - Smith, Megan
A3 - Wolery, Thomas
A4 - Walsh, Stuart D.C.
A5 - McNab, Walt W.
DB - Geothermal Data Repository
DP - Open EI | National Renewable Energy Laboratory
DO -
KW - geothermal
KW - co2-egs
KW - geochemical reaction
KW - co2
KW - egs
KW - geochemistry
KW - dissolution
KW - precipitation
KW - sequestration
KW - simulation
KW - chlorite dissolution kinetics
KW - mineral scaling
KW - mineral alteration
KW - fracture permeability
KW - geochemical alteration
KW - modeling
KW - taupo volcanic zone
KW - new zealand
KW - greywacke
KW - rhyolite
KW - dacite
KW - egs-co2
KW - rock-gas interaction
LA - English
DA - 2013/01/01
PY - 2013
PB - Lawrence Livermore National Laboratory
T1 - Chemical Impact of Elevated CO2 on Geothermal Energy Production
UR - https://gdr.openei.org/submissions/177
ER -
Carroll, Susan, et al. Chemical Impact of Elevated CO2 on Geothermal Energy Production. Lawrence Livermore National Laboratory, 1 January, 2013, Geothermal Data Repository. https://gdr.openei.org/submissions/177.
Carroll, S., Smith, M., Wolery, T., Walsh, S., & McNab, W. (2013). Chemical Impact of Elevated CO2 on Geothermal Energy Production. [Data set]. Geothermal Data Repository. Lawrence Livermore National Laboratory. https://gdr.openei.org/submissions/177
Carroll, Susan, Megan Smith, Thomas Wolery, Stuart D.C. Walsh, and Walt W. McNab. Chemical Impact of Elevated CO2 on Geothermal Energy Production. Lawrence Livermore National Laboratory, January, 1, 2013. Distributed by Geothermal Data Repository. https://gdr.openei.org/submissions/177
@misc{GDR_Dataset_177,
title = {Chemical Impact of Elevated CO2 on Geothermal Energy Production},
author = {Carroll, Susan and Smith, Megan and Wolery, Thomas and Walsh, Stuart D.C. and McNab, Walt W.},
abstractNote = {Numerical simulations have shown that the use of supercritical CO2 instead of water as a heat transfer fluid yields significantly greater heat extraction rates for geothermal energy. If this technology is implemented successfully, it could increase geothermal energy production and offset atmospheric emissions of greenhouse gases. However, the impact of geochemical reactions between acidic waters in equilibrium with supercritical CO2 and the reservoir rock have not been evaluated. At issue are enhanced rock-water interactions that may reduce reservoir porosity and permeability and may exacerbate downstream scaling.
The publications included in this submission aim to assess the geochemical impact of CO2 on geothermal energy production by analyzing the geochemistry of existing geothermal fields with elevated natural CO2, to measure realistic rock-water rates for geothermal systems using laboratory and field-based experiments, and to develop reactive transport models using the filed-based rates to simulate production scale impacts.},
url = {https://gdr.openei.org/submissions/177},
year = {2013},
howpublished = {Geothermal Data Repository, Lawrence Livermore National Laboratory, https://gdr.openei.org/submissions/177},
note = {Accessed: 2025-07-31}
}
Details
Data from Jan 1, 2013
Last updated May 23, 2017
Submitted Feb 15, 2013
Organization
Lawrence Livermore National Laboratory
Contact
Susan Carroll
Authors
Keywords
geothermal, co2-egs, geochemical reaction, co2, egs, geochemistry, dissolution, precipitation, sequestration, simulation, chlorite dissolution kinetics, mineral scaling, mineral alteration, fracture permeability, geochemical alteration, modeling, taupo volcanic zone, new zealand, greywacke, rhyolite, dacite, egs-co2, rock-gas interactionDOE Project Details
Project Name Chemical Impact of Elevated CO2 on Geothermal Energy Production
Project Lead Greg Stillman
Project Number AID 19980
