DEVICE FOR ACOUSTIC ACTION ON FACE ZONE OF PRODUCTIVE POOL Russian patent published in 2000 - IPC

FIELD: oil and gas production, treatment of oil and gas-condensate wells. SUBSTANCE: proposed device includes ground indicator unit and power supply unit connected by cable to down-hole logging instrument. The latter is made of generator connected to acoustic radiator positioned in lower part of down-hole logging instrument. Upper part of instrument houses units of reference signal, comparison and control connected in series, output of the latter is linked to second input of generator. Lower part of down-hole logging instrument houses in addition sensor testing level of acoustic radiation having acoustic contact with acoustic radiator and connected to second input of comparison unit. Hydrophone whose outputs are connected to second input of control unit and ground indicator unit is structurally coupled to specified sensor. Acoustic radiator, sensor and hydrophone are manufactured from piezoceramics. Acoustic radiator and hydrophone have acoustic contact with case of down-hole logging instrument in points of their positions. EFFECT: increased efficiency of action on pool with reduced consumption of energy and time of action thanks to continuous test and possibility of correction of modes of acoustic action on treated pool. 2 dwg