FIELD: oil and gas production. SUBSTANCE: installation consists of production string mounted in well with cylinder and piston to generate within well space wave pressure pulses in the moments piston comes out of cylinder. Installation is also provided with pipeline to withdraw gas from production string. Lower end of cylinder is opened into well space, while piston has dead ends. Production string further has side holes with back valves to pass fluid from well space into production string space when piston moves down. EFFECT: reduced loss of power in transferring pulses into productive formation. 1 dwg
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