AIR-LIFT OIL PRODUCTION AGGREGATE Russian patent published in 1995 - IPC

FIELD: oil production. SUBSTANCE: air-lift production aggregate has head and concentrically mounted strings lifting and air feeding strings, communicated through perforation, and also agent feeding string with holes on two levels and dosing apparatus with balls of deformed material, seat, working agent stream deflectors, balls limiters and capacity for used balls. Upper level holes in the case are made in interval of lower end of lifting string. Seat is fixed directly over the holes on inner wall of string. Working agent stream deflectors also are fixed on inner wall of string opposite to holes of lower level. Balls limiters are hinged to lower part of deflectors with capability for balls to pass in capacity, joined to lower butt of string and dosing apparatus with balls is mounted in its upper part. In the case air feeding string is mounted outside, and agent feeding string inside pulp lifting string. EFFECT: simplified design. 2 dwg