| Abstract: | 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. |