METHOD FOR PRODUCTION OIL WELL ZONE TREATMENT Russian patent published in 2005 - IPC

FIELD: oil production, particularly for oil well yield recovery under difficult development conditions, for instance to increase well output and to recover marginal wells.

SUBSTANCE: method involves exciting sound emitting device by electric signal having process frequency band; transforming electric signal energy into energy of acoustic vibrations acting on neighboring production well zone over perforated intervals with predetermined time steps; performing action on remote production well zone with low-frequency oscillations of combinative frequency of non-linear cooperation of process band oscillations. Acoustic oscillation action of neighboring production well zone is performed by succession of frequency-modulated signals beginning from the highest frequency and with frequency reduction. Low-frequency oscillation action on remote production well zone is performed beginning with combinative difference frequencies with frequency reduction and action is terminated beginning with minimal combinative difference frequencies with frequency increase. After that neighboring production zone is treated by a succession of frequency-modulated signals beginning from the lowest frequency with frequency increase.

EFFECT: increased efficiency of oil well bottom zone treatment.

1 ex, 1 dwg