METHOD FOR MAKING HORIZONTAL DRAINING SYSTEM FOR EXTRACTION OF GAS, METHOD FOR DRILLING DRAINING DRILL WELLS AND METHOD FOR EXTRACTING GAS FROM COAL FORMATION (VARIANTS)

摘要

FIELD: technology for extraction of mineral resources from underground formations, in particular, method and system for providing access to underground formations from earth surface, and method for producing gas from coal bed, which substantially reduce or abolish disadvantages and problems of previously known methods and systems.;SUBSTANCE: in accordance to method, jointed well is proposed with such draining structure, which crosses vertical well with horizontal hollow. Draining systems provide access from surface to broad underground area, while well with vertical hollow allows efficient removal and/or extraction of caught water, hydrocarbons and other mineral resources.;EFFECT: increased efficiency of gas extraction from underground deposit due to expansion of draining system area across the coal formation, improved draining well drilling technology.;5 cl, 11 dwg