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{{publication  

  | image  = ST59_lg.jpg

  | image  = ST59_lg.jpg

  | width  = 120px

  | width  = 200px

  | series  = Studies in Geology

  | series  = Studies in Geology

  | title  = Carbon dioxide sequestration in geological media: State of the science

  | title  = Carbon dioxide sequestration in geological media: State of the science

^{***ECBM = enhanced coalbed methane.''}

^{***ECBM = enhanced coalbed methane.''}

[[file:GeosequestrationProcess.JPG|thumb|400px|{{figure number|1}}A simplified view of the steps involved in the geosequestration process (image courtesy of Cooperative Research Centre for Greenhouse Gas Technologies [CO2CRC]).<ref name=Kaldietal_2009>Kaldi, J. G., C. M. Gibson-Poole, and T. H. D. Payenberg, 2009, Geological input to selection and evaluation of CO₂ geosequestration sites, in M. Grobe, J. C. Pashin, and R. L. Dodge, eds., Carbon dioxide sequestration in geological media—State of the science: AAPG Studies in Geology 59 , p. 5–16.</ref>]]

[[file:GeosequestrationProcess.JPG|thumb|400px|{{figure number|1}}A simplified view of the steps involved in the geosequestration process (image courtesy of Cooperative Research Centre for Greenhouse Gas Technologies [CO2CRC]).<ref name=Kaldietal_2009>Kaldi, J. G., C. M. Gibson-Poole, and T. H. D. Payenberg, 2009, [http://archives.datapages.com/data/specpubs/study59/CHAPTER01/CHAPTER01.HTM Geological input to selection and evaluation of CO₂ geosequestration sites], in M. Grobe, J. C. Pashin, and R. L. Dodge, eds., Carbon dioxide sequestration in geological media—State of the science: [http://store.aapg.org/detail.aspx?id=739 AAPG Studies in Geology 59], p. 5–16.</ref>]]

Geosequestration comprises several steps: first, the CO₂ is captured at the source, which can be a power plant or other industrial facility; the captured CO₂ is then transported, typically via pipeline, from the source to the geological storage site; next, the CO₂ is injected deep underground via wells into the geological reservoir; and finally, the CO₂ is stored in the geological reservoir, where its movement is carefully monitored and the quantity stored is regularly verified ([[:file:GeosequestrationProcess.JPG|Figure 1]]). The capture, transport, and injection processes do require additional energy to be expended (and hence more CO₂ is emitted); however, the net CO₂ emission reduction is still a significantly large volume to make deep reductions in anthropogenic greenhouse gas emissions. For example, a power plant with CCS could reduce net CO₂ emissions to the atmosphere by approximately 80–90% compared to a plant without CCS ([[:file:CO2EmissionsComparison.JPG|Figure 2]]).<ref name=IPCC_2005 />

Geosequestration comprises several steps: first, the CO₂ is captured at the source, which can be a power plant or other industrial facility; the captured CO₂ is then transported, typically via pipeline, from the source to the geological storage site; next, the CO₂ is injected deep underground via wells into the geological reservoir; and finally, the CO₂ is stored in the geological reservoir, where its movement is carefully monitored and the quantity stored is regularly verified ([[:file:GeosequestrationProcess.JPG|Figure 1]]). The capture, transport, and injection processes do require additional energy to be expended (and hence more CO₂ is emitted); however, the net CO₂ emission reduction is still a significantly large volume to make deep reductions in anthropogenic greenhouse gas emissions. For example, a power plant with CCS could reduce net CO₂ emissions to the atmosphere by approximately 80–90% compared to a plant without CCS ([[:file:CO2EmissionsComparison.JPG|Figure 2]]).<ref name=IPCC_2005 />