Methane production from carbonaceous subterranean formations

Details Methane production from carbonaceous subterranean formations Methane production from carbonaceous subterranean formations

E - Fixed Constructions

21

B

166/31

E21B 43/295 (2006.01)

Patent

CA 2002595

ABSTRACT A method of producing methane by injecting inert gas, such as nitrogen, through an injection well into a solid carbonaceous subterranean formation (e.g., coal) and recovering methane from a production well(s). Methane desorption is achieved by reduction in methane partial pressure rather than by reduction in total pressure alone.

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