METHOD OF STIMULATION OF COAL BED THROUGH WELLS DRILLED FROM EXCAVATIONS

摘要

FIELD: mining.SUBSTANCE: method of stimulation of coal bed through the wells drilled from excavations, comprising the hydraulic fracturing and the subsequent development of the formed cracks by air purge is offered. The hydraulic fracturing is performed by isolation with packers of the well site with the subsequent portion water pumping into the isolated site at a speed and under pressure, sufficient for layer hydraulic fracturing. The pumping of water portions is repeated until occurrence of initial cracks of hydraulic fracturing. Then the water is pumped out from a well and air at the volume sufficient for development of pattern of cracks of hydraulic fracturing is pumped. The creation of pattern of cracks of hydraulic fracturing is repeated on well sites along the whole its length with the intervals pre-determined by geological conditions and pre-set degassing level.EFFECT: improvement of efficiency of coal bed degassing.1 dwg