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.
Resources
3 resources available
-
Brine-CO2 Flow through a Natural Fracture.pdf
PDF -
Chlorite Kinetics.pdf
PDF -
CO2-Rock Interactions in EGS-CO2.pdf
PDF
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Complete Metadata
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|---|---|
| accessLevel | public |
| bureauCode |
[
"019:20"
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| contactPoint |
{
"fn": "Susan Carroll",
"@type": "vcard:Contact",
"hasEmail": "mailto:carroll6@llnl.gov"
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| dataQuality |
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| description | 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. |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "Brine-CO2 Flow through a Natural Fracture.pdf",
"format": "pdf",
"accessURL": "https://gdr.openei.org/files/177/Smith11Feb2013_Stanford%20Geothermal.pdf",
"mediaType": "application/pdf",
"description": "Experimental investigation of brine-CO2 flow through a natural fracture: permeability increases with concurrent dissolution/precipitation reactions. Proceedings; 38th Workshop on Geothermal Reservoir Engineering, Stanford University"
},
{
"@type": "dcat:Distribution",
"title": "Chlorite Kinetics.pdf",
"format": "pdf",
"accessURL": "https://gdr.openei.org/files/177/Smith2011GCR.pdf",
"mediaType": "application/pdf",
"description": "Paper "Chlorite Kinetics and Impact on EGS-CO2" published at the 2011 Geothermal Resource Council meeting."
},
{
"@type": "dcat:Distribution",
"title": "CO2-Rock Interactions in EGS-CO2.pdf",
"format": "pdf",
"accessURL": "https://gdr.openei.org/files/177/Wolery2010GRC.pdf",
"mediaType": "application/pdf",
"description": "CO2-Rock Interactions in EGS-CO2: New Zealand TVZ Geothermal Systems as a Natural Analog. GRC Transactions, Vol 34. 729-236"
}
]
|
| identifier | https://data.openei.org/submissions/6532 |
| issued | 2013-01-01T07:00:00Z |
| keyword |
[
"chlorite dissolution kinetics",
"co2",
"co2-egs",
"dacite",
"dissolution",
"egs",
"egs-co2",
"fracture permeability",
"geochemical alteration",
"geochemical reaction",
"geochemistry",
"geothermal",
"greywacke",
"mineral alteration",
"mineral scaling",
"modeling",
"new zealand",
"precipitation",
"rhyolite",
"rock-gas interaction",
"sequestration",
"simulation",
"taupo volcanic zone"
]
|
| landingPage | https://gdr.openei.org/submissions/177 |
| license | https://creativecommons.org/licenses/by/4.0/ |
| modified | 2017-05-23T22:32:25Z |
| programCode |
[
"019:006"
]
|
| projectLead | Greg Stillman |
| projectNumber | AID 19980 |
| projectTitle | Chemical Impact of Elevated CO2 on Geothermal Energy Production |
| publisher |
{
"name": "Lawrence Livermore National Laboratory",
"@type": "org:Organization"
}
|
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|
| title | Chemical Impact of Elevated CO2 on Geothermal Energy Production |
