FIELD: gas extraction industry. SUBSTANCE: method includes opening of productive layers, trying out of extraction well, mounting of means for water jetting, boring of auxiliary wells, mounting of filtering strings in water jetting means and pumping of gravel mixture. According to the method, filtering strings of auxiliary wells are made with interval-wise perforation with overlapping of power of each productive layer from the side of roof and floor, and water jetting is performed in the floor and roof and in intervals of least resistance to water jetting for each productive layer. EFFECT: increased effectiveness of gas extraction from multi-layer coal deposit. 2 cl, 1 ex, 1 dwg
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