| 摘要 |
FIELD: mining. ^ SUBSTANCE: well filtre includes case made of two coaxial pipes with side holes for filtered fluid flow, two conical bushes connecting filtering element ends to the pipe ends. Filtration element is fixed in a gap between the pipes. Upper and lower locks with centering skids are attached to the filter case by thread joints. In the upper filtre part an electroacoustic converter with a device for connection to power cable is mounted. Filtre and filtering element length are multiple to the half wave length of ultrasonic vibration excited by the electroacoustic converter. ^ EFFECT: sustaining normal production rate by means of multiple filtering capacity recovery due to filtre regeneration without removing it from the well. ^ 7 cl, 4 dwg |
