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
Lawrence Livermore National Laboratory. (2013). Chemical Impact of Elevated CO2 on Geothermal Energy Production [data set]. Retrieved from https://gdr.openei.org/submissions/177.
Carroll, Susan, Smith, Megan, Wolery, Thomas, Walsh, Stuart D.C., and McNab, Walt W. Chemical Impact of Elevated CO2 on Geothermal Energy Production. United States: N.p., 01 Jan, 2013. Web. https://gdr.openei.org/submissions/177.
Carroll, Susan, Smith, Megan, Wolery, Thomas, Walsh, Stuart D.C., & McNab, Walt W. Chemical Impact of Elevated CO2 on Geothermal Energy Production. United States. https://gdr.openei.org/submissions/177
Carroll, Susan, Smith, Megan, Wolery, Thomas, Walsh, Stuart D.C., and McNab, Walt W. 2013. "Chemical Impact of Elevated CO2 on Geothermal Energy Production". United States. https://gdr.openei.org/submissions/177.
@div{oedi_177, title = {Chemical Impact of Elevated CO2 on Geothermal Energy Production}, author = {Carroll, Susan, Smith, Megan, Wolery, Thomas, 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.}, doi = {}, url = {https://gdr.openei.org/submissions/177}, journal = {}, number = , volume = , place = {United States}, year = {2013}, month = {01}}
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