Patent ID: 8454268

Claim:
A gaseous emissions (GE) sequestration system, comprising: a porous storage reservoir containing a dense fluid; a first tubing string, configured to provide and inject a gaseous stream at or near the top of the porous storage reservoir above the base portion of the porous storage reservoir; a second tubing string configured to withdraw the dense fluid from the base portion of the porous storage reservoir, wherein the first and second tubing strings are at least partially enclosed in a single wellbore; a non-porous cap rock formation above the porous storage reservoir that confines the porous storage reservoir; and an overlying porous reservoir above the caprock, wherein the second tubing string is configured to re-inject the dense fluid into the overlying porous reservoir to increase a fluid pressure in the overlying porous reservoir to create a high pressure hydrodynamic seal between the porous storage reservoir and the overlying porous reservoir.