PROCESS OF MACHINING OF FACE ZONE OF WELL AND GEAR FOR ITS REALIZATION Russian patent published in 2002 - IPC

FIELD: oil production. SUBSTANCE: invention deals with machining of face zone of well by mud grouted stratum sand and resin-paraffin bitumen particles. Process is carried out by simultaneous action of controlled acoustic irradiation and pulse alternating depression and repression on productive pool. Both forms of action, acoustic and hydrodynamic, are synchronized for control over intensity of acoustic irradiation depending on sign of hydrodynamic action. Maximum intensity goes in step with depression and minimum intensity coincides with repression. Gear for realization of process presents complex down-hole logging instrument incorporating excitation generator of acoustic radiators with system of suction radial ducts in body between them controlled by transmitter of hole hydrodynamic pressure. Radial ducts communicate with implosive chamber with the help of intake valve controlled by thermosoftening plastic material stopper and electric heater. EFFECT: increased efficiency of machining of face zone of well y mud grouted stratum sand and resin-paraffin-bitumen particles. 2 cl, 3 dwg