FIELD: oil-and-gas industry.
SUBSTANCE: proposed method comprises drilling of blowing and gas-discharge wells, erection of turning, connection of wells via coal seam by hydro frac, filling of produced channel with catalyst, kindling of coal seam with its heating to 300-500°C, feeding of overheated steam into sais channel to said temperature and discharge of combustible gas via gas discharge well. Here, hydro frac job and filling of channel with catalyst are combined by using iron oxide-based catalyst as the proppant.
EFFECT: accelerated coal gasification, lower costs of combustible gas.
3 cl
Authors
Dates
2014-12-20—Published
2013-11-20—Filed