Among multitudinous sand control oil pumps, the structure of short pump barrel,long plunger ,pump down sand collecting and lateral oil feeding is widely used.(Long plunger is the most important and the most crucial part).By means of upward and downward travel of the plunger,the oil liquid is incessantly pumped to the ground surface via a two-way joint and a two stage standing valve.Meanwhile,a part of sand in the pipe that could not ba raised is settled into the sand collecting tail pipe.through the annular space of the pump barrel,two-way joint.

Category:

1. Connecting type:

Long plunger formed through connection of 1.2m or 1.5m length short plunger

1. Integrated type:

The feture of integrated long plunger  is manufacturing ,surfacing ,alighment and unified grinding. Integrally.

Specification:

φ32×2.4～12m  φ38×2.4～12m   φ44×2.4～12m

φ57×2.4～12m  φ70×2.4～12m   φ83×2.4～12m

φ95×2.4～12m

Technical feture:

1.Surface spray remelting technology is adopted for the outer surface, a layer of nickel –base alloy powder is compounded.This technique can guarantee the plunger to be charracterized with corrosion resistance,attrition resistance and steady dimension.

Certificate:

1. API Spec 11AX certificate(11AX-0083)

2. Patent No.   ZL200820011916.7