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Title: Method for carbon dioxide sequestration

A method for geo-sequestration of a carbon dioxide includes selection of a target water-laden geological formation with low-permeability interbeds, providing an injection well into the formation and injecting supercritical carbon dioxide (SC--CO.sub.2) into the injection well under conditions of temperature, pressure and density selected to cause the fluid to enter the formation and splinter and/or form immobilized ganglia within the formation. This process allows for the immobilization of the injected SC--CO.sub.2 for very long times. The dispersal of scCO2 into small ganglia is accomplished by alternating injection of SC--CO.sub.2 and water. The injection rate is required to be high enough to ensure the SC--CO.sub.2 at the advancing front to be broken into pieces and small enough for immobilization through viscous instability.
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Issue Date:
OSTI Identifier:
Sandia Corporation (Albuquerque, NM) SNL-A
Patent Number(s):
Application Number:
Contract Number:
Resource Relation:
Patent File Date: 2013 Jul 25
Research Org:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org:
Country of Publication:
United States

Other works cited in this record:

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journal, November 2011
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journal, May 1980

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Determining effective interfacial tension and predicting finger spacing for DNAPL penetration into water-saturated porous media
journal, March 2001

Maximization of capillary trapping ratio to injected CO2 by means of co-injection
journal, January 2011

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