Chemical Impact of Elevated CO2 on Geothermal Energy Production

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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 -
Export Citation to RIS
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: 2025-05-09} }

Details

Data from Jan 1, 2013

Last updated May 23, 2017

Submitted Feb 15, 2013

Organization

Lawrence Livermore National Laboratory

Contact

Susan Carroll

Authors

Susan Carroll

Lawrence Livermore National Laboratory

Megan Smith

Lawrence Livermore National Laboratory

Thomas Wolery

Lawrence Livermore National Laboratory

Stuart D.C. Walsh

Lawrence Livermore National Laboratory

Walt W. McNab

Lawrence Livermore National Laboratory

DOE Project Details

Project Name Chemical Impact of Elevated CO2 on Geothermal Energy Production

Project Lead Greg Stillman

Project Number AID 19980

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