초록 ▼

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 displace

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.

대표청구항 ▼

1. A system for coalbed gas production, comprising:a. a coalbed; b. coalbed gas sorbed to coal in said coalbed; c. water associated with at least a part of said coalbed; d. at least one production well which communicates with said coalbed gas; e. a coalbed stimulation gas; f. a coalbed stimulation g

1. A system for coalbed gas production, comprising:a. a coalbed; b. coalbed gas sorbed to coal in said coalbed; c. water associated with at least a part of said coalbed; d. at least one production well which communicates with said coalbed gas; e. a coalbed stimulation gas; f. a coalbed stimulation gas transfer element; g. a production well coupling element responsive to said coalbed stimulation gas transfer element to deliver said coalbed stimulation gas to said coalbed within the vicinity of said at least one production well; h. a water displacement perimeter surrounding said at least one production well; i. a stimulated coalbed gas reservoir; j. at least one water confinement well communicating with said coalbed located a distance from said at least one production well; k. at least one water transfer element; l. at least one water confinement well coupling element responsive to said water transfer element and to said at least one water confinement well; m. coalbed gas desorbed into said stimulated coalbed gas reservoir; n. at least one coalbed gas removal element; o. at least one coalbed gas removal element coupler responsive to said at least one coalbed gas removal element and said production well; and p. at least coalbed gas removed from said stimulated coalbed reservoir through said at least one production well.