METHOD FOR PROVIDING ACCESS TO UNDERGROUND AREA OR TO COAL BED (VARIANTS), SYSTEM FOR PROVIDING ACCESS TO COAL BED, METHODS FOR FORMING UNDERGROUND DRAINING SYSTEM AND FORMING DRAINING WELLS, METHOD FOR PREPARATION OF COAL BED (VARIANTS) AND METHOD FOR EXTRACTING GAS FROM UNDERGROUND COAL BED (VARIANTS)

摘要

FIELD: mining industry. ^ SUBSTANCE: draining systems, drilled in horizontal well along bed deposit, connected to system of vertical wells drilled from surface, provide access to broad underground area, while vertical well or wells allow effective removal and/or extraction of water, hydrocarbons and other mineral resources. ^ EFFECT: higher efficiency and productiveness. ^ 10 cl, 11 dwg