METHOD FOR METHANE REMOVAL FROM COAL DEPOSIT SEAMS

摘要

FIELD: mining, particularly underground mining of highly explosive and gas-bearing coal seams. ^ SUBSTANCE: method involves removing methane from tension zones adjacent to block boundaries; drilling additional wells in geodynamic block massif; performing hydraulic fracturing thereof and well linkage with wells drilled in tension zones. Hydraulic fracturing is carried out with liquid including oxygen containing reagents. Then temperature is increased in wells up to level, which provides oxygen emission from oxygen-containing solutions and coal material is oxidized. Oxidizing products and evolved gas is removed via previously drilled wells in tension zones. To provide maximal fissure opening after hydraulic fracturing coal-containing massif is heated and acid solutions are injected in the massif. ^ EFFECT: increased efficiency of coal seam degassing due to increased completeness of methane removal from total geodynamic block volume including coal containing gas-bearing thickness. ^ 5 cl, 2 dwg