FIELD: oil production equipment, particularly to reduce mechanical impurity effect.
SUBSTANCE: method involves providing downhole equipment with electric centrifugal pump; installing composite acoustic noise transducer composed of quarter-wave resonators under submersed electric centrifugal pump; converting low-frequency noise of submersed electric centrifugal pump into ultrasound; forming ultrasonic stationary waves in annular space between casing pipe and composite acoustic noise transducer; creating ultrasound in annular gap between casing pipe and composite acoustic noise transducer under stationary waves action upon mechanical impurity particle coagulation and depositing mechanical impurity particles on well bottom.
EFFECT: increased efficiency of wells provided with electric centrifugal pumps during extraction of liquid with high suspension particle concentration.
5 dwg, 1 ex
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