METHOD AND DEVICE FOR PULSING ACTION ON PRODUCTIVE BED Russian patent published in 1998 - IPC

FIELD: mining industry. SUBSTANCE: according to method, transmission is effected of molecular-wave oscillations from emitter of hydraulic hammer installed at well head through string of pump-compressor pipes via its upper end and along liquid column in bore-hole through its top level to productive bed. Simultaneously with transmission of molecular-wave oscillations, pressure is increased in bore-hole by delivering liquid from pump with pressure accumulator with their inlet connected to pump-compressor pipes at well head. Hydraulic impacts are created in liquid column in bore-hole by periodic closing of pump inlet by means of hydraulic hammer emitter during transmission of its molecular-wave oscillations to pump-compressor pipes and liquid column in well. Device has hydraulic hammer with striker and emitter which is resiliently connected with body of hydraulic hammer. Emitter is in the form of converter of pulse loads into molecular-wave oscillations and it is made integral with transmitter of molecular-wave oscillations towards upper end of pump-compressor pipes and to top level of liquid in bore-hole. Device is provided with high-pressure pump and pressure accumulator which are connected by their inlet to pump-compressor pipes at well head. Transmitter brings oscillations to top end of pump-compressor pipes and to top level of liquid in bore-hole. Lower end of transmitter is bevelled at angle of 45 deg. to its axis at side of pump inlet. Lower surface of hydraulic hammer striker is made concave, and surface of aforesaid converter which is in contact with it is made convex and mating to concave surface of striker. EFFECT: higher efficiency. 5 cl, 2 dwg