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US 12,385,374 B2Granted
Methods and systems for greenhouse gas capture and sequestration
AssigneeCarbon Geocycle, Inc.
InventorsJohn Pope, Wade A. Bard
Life of this patent
Estimating the term…
Abstract
Injecting CO2 that is diluted within water, into a coal seam, which allows for the sequestering and control of downhole CO2 within connected fractures without damaging the subterranean formation.
Claims16
A method comprising:
- forming a mixture stream by dissolving carbon dioxide within water;
- injecting the mixture stream into a solid subterranean formation being a coal seam, wherein carbon dioxide is diluted to a concentration that does not cause the solid subterranean formation to swell, and the solid subterranean formation preferentially absorbs CO2 gas over nitrogen and methane;
- wherein the methane within the solid subterranean formation moves along a pressure gradient across multiple axis of a corresponding solid subterranean formation;
- injecting water into a capture vessel;
- moving a location of methane within the solid subterranean formation to a desired position based on a composition of the solid subterranean formation and the concentration of the carbon dioxide mixed with the water in the capture vessel;
- sequestering downhole carbon dioxide within connected fractures without swelling the coal seam.
3 more elements
A method comprising:
- dissolving carbon dioxide within water to form a solution gas mixture stream;
- injecting the solution gas mixture stream into a plurality of solid subterranean formations, each of the plurality of solid subterranean formations including a coal seam, wherein a carbon dioxide is diluted to a concentration that does not cause the plurality of solid subterranean formations to swell;
- moving, via the carbon dioxide within the solution gas mixture stream, methane from the solid subterranean formations towards a collector based on a composition of the solid subterranean formation and the concentration of the carbon dioxide mixed with the water in the capture vessel, and the solid subterranean formations preferentially absorb CO2 gas over nitrogen and methane, wherein the methane within the solid subterranean formation moves along a pressure gradient across multiple axis of a corresponding solid subterranean formation;
- and
- sequestering downhole carbon dioxide within connected fractures without swelling the coal seam.
2 more elements
Dependencies are inferred from the claim text.