METHOD OF NOISE MODULATION IN OPERATIONAL WELL CASING STRING OUTSIDE SPACE DURING PERIODICAL LIQUID PUMPING OFF BY SUBMERGED ELECTRICAL PUMP USING OIL WELL TUBING Russian patent published in 1996 - IPC

FIELD: oil production, method is used for operation automatic control of high-output oil wells operated in conditions of periodical pumping-off. SUBSTANCE: on inner surface of tubing in series one after another over generating spectrum of noise submerged electrical pump there are first resonator and second resonator absorbing constantly two bands of sound oscillations frequencies from inner cavity of tubing. Resonator of lower dynamic level and resonator of upper dynamic level, that are absorbing two bands of sound oscillations frequencies from outer tubing space, are located at given distance from each other. First resonator and resonator of lower dynamic level are tuned to similar low resonance frequencies. Second resonator and resonator of upper dynamic level are tuned to similar high resonance frequencies. For periodical liquid pumping off from well control of submerged electrical pump is exercised according to information received from resonator of lower dynamic level and resonator of upper dynamic level during their submerge fro liquid medium into gas medium. EFFECT: method allows to use automatic control of high-output oil well operation in conditions of periodic liquid pumping off. 4 dwg