Wells – Processes – Cyclic injection then production of a single well
Patent
1989-08-08
1991-05-14
Novosad, Stephen J.
Wells
Processes
Cyclic injection then production of a single well
166245, 166266, 166272, E21B 4316, E21B 4324, E21B 4330, E21B 4340
Patent
active
050147854
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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Puri Rajen
Stein Michael H.
Amoco Corporation
Brown Scott H.
Hook Fred E.
Novosad Stephen J.
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