A kind of sealing filler injectable oil well polished rod sealer

Abstract

A sealing filler injectable type oil well polished rod sealer, including a box body, a box seat and an elastic compensating ring, the box body is placed on the box seat, and the two are connected and fixed by a connecting piece. The box body is formed with a The through chamber has a retaining ring embedded in its upper port, the upper end of the elastic compensating ring can be embedded in the lower port of the box body, and is closely attached to the inner surface of the box body, and the elastic compensating ring part The lower end is accommodated in the ring part of the upper end of the box seat, and a through hole is arranged vertically on the box seat, and the through hole is connected with the ring part, and a ring shoulder chamber is formed between the ring part and the through hole, and the chamber is used to stop the material. The part between the ring and the elastic compensation ring forms a filling chamber, and the side wall of the box body is provided with a filling port, and a filling nozzle for injecting sealing packing is installed on the side wall of the box body. When the retaining ring, the filling chamber, the elastic compensating ring part and the passage pass through, the outer surfaces thereof are in sealing contact with the upper ends of the retaining ring and the elastic compensating ring part.

Description

technical field [0001] The invention belongs to a device in the field of petroleum exploitation, in particular, it is a sealer for oil well polished rods that can be injected with sealing packing. Background technique [0002] Oil production wellhead polished rod sealer is a necessary wellhead tool for all pumping wells. The conventional wellhead polished rod sealer mainly relies on the rubber packing in it to achieve sealing through the pressing force of the gland and the pressing force of the radial screw to make the packing tightly hug the polished rod. This sealer must stop pumping and stop production when replacing the packing, thereby bringing adverse effects to normal production, reducing production time rate and affecting output. [0003] In view of the defects in the above-mentioned known technologies, the inventor has developed a seal packing injectable oil well polished rod sealer based on years of experience in production design in this field and related fields....

AI Technical Summary

Problems solved by technology

This kind of sealer must stop pumping and stop production when replacing the packing, thus bringing adverse effects on normal production, reducing production time and affecting output

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