PLANT FOR LONG-STROKE DEEP-PUMPING OIL WELLS

摘要

SUMMARY OF THE INVENTION: Ground pump drive comprises a winch with a flexible tractive body associated with the displacer elements of the pump. The element is located in the cavity tubing string installed in the well to form zetrub- Nogo space - Traction body is designed as a rope, a displacement element - as a series of successively with constant pitch t govom attached to plunger body. The annulus on the outside of the riser to form a number of isolated chambers secured the self-propelling cuff step arrangement to-ryh equal to the pitch arrangement of the plungers, in the wall of tubing string, in the zone of each isolated chamber formed spaced adjustment calibrated intake, overflow openings for message chambers with a cavity tubes. Each channel is provided with overflow opening with a return valve openable in the direction of the lifting tube cavity. Between the outlet of the check valve and a calibrated orifice arranged ustr- locking the spool in a hydraulic timer. 1 ZP f ly-2-yl. ate with