FIELD: oil and gas mining industry. SUBSTANCE: froth-forming composition has, wt.-% ammonium chloride 30.0-35.4; alkaline or alkaline-earth metal nitrite, reaction starter iron or aluminium halide or sulfate, surface-active substance 0.04-0.05; КМЦ or ПАА 0.3-0.8, and water the rest. Froth-forming composition can be used both in solid and liquid state, for preparing foam, froth-material, alleviated drilling fluids, etc. EFFECT: increased effectiveness at layer permeability recovery, decreased cost at hole development. 8 tbl
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