Inventors:
Charles Mones - Cheyenne WY, US
Assignee:
The University of Wyoming Research Corporation d/b/a Western Research Institute - Laramie WY
International Classification:
E21B043/25
E21B043/30
US Classification:
166245000, 166263000, 166268000, 166308100, 299012000, 166090100, 166052000
Abstract:
A method of stimulating coalbed methane production by injecting gas into a producer and subsequently placing the producer back on production is described. A decrease in water production may also result. The increase in gas production and decrease in water production may result from: (1) the displacement of water from the producer by gas; (2) the establishment of a mobile gas saturation at an extended distance into the coalbed, extending outward from the producer; and (3) the reduction in coalbed methane partial pressure between the coal matrix and the coal's cleat system.