Gravitational trapping of carbon dioxide in deep sea sediments: Permeability, buoyancy, and geomechanical analysis


Levine, J.S., Matter, J.M., Goldberg, D., Cook, A. and Lackner, K.S. (2007) Gravitational trapping of carbon dioxide in deep sea sediments: Permeability, buoyancy, and geomechanical analysis Geophysical Research Letters, 34, (24) (doi:10.1029/2007GL031560).

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Description/Abstract

Liquid carbon dioxide injected in deep-sea sediments at km depths and near freezing temperatures is denser than surrounding pore water and will be trapped by gravitational forces. Storage capacity for CO2 in such formations below the ocean floor is shown to vary with seafloor depth, geothermal gradient, porosity, and pore water salinity. The formation permeability, or the successful engineering of such permeability through hydraulic fracturing, will determine the capacity for gravitational trapping in deep-sea geological formations. We conclude that most ocean sediments at appropriate depth will lack the required permeability and that conventional hydraulic fracturing would only be possible in carefully selected sites.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1029/2007GL031560
ISSNs: 0094-8276 (print)
Keywords: CO2 separations
Subjects: G Geography. Anthropology. Recreation > GC Oceanography
Q Science > QD Chemistry
Q Science > QE Geology
Organisations: Geochemistry
ePrint ID: 354713
Date :
Date Event
December 2007Published
Date Deposited: 17 Jul 2013 15:59
Last Modified: 21 Feb 2017 07:34
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/354713

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