FIELD: mining.
SUBSTANCE: proposed method comprises creation of fractures in coal seam by cyclic increase and decrease in fluid pressure in well and affecting the seam by low-frequency high-amplitude pressure pulses at fluid pressure increase in the well. Note here that fluid pressure in the well is intermittently increased above elastic limit of the massif being disintegrated. At a time, it is controlled that maximum strains created in coal seam are lower that breaking point of the massif being disintegrated.
EFFECT: higher efficiency of natural gas production.
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Authors
Dates
2014-07-27—Published
2013-03-25—Filed