INTENSIFICATION OF NATURAL GAS EXTRACTION FROM COAL SEAMS VIA WELLS Russian patent published in 2014 - IPC E21F7/00 E21B43/25 

Abstract RU 2524583 C1

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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RU 2 524 583 C1

Authors

Afanas'Ev Pavel Igorevich

Korshunov Gennadij Ivanovich

Seregin Aleksandr Sergeevich

Shipulin Aleksandr Vladimirovich

Jutjaev Evgenij Petrovich

Dates

2014-07-27Published

2013-03-25Filed