FIELD: oil and gas production.
SUBSTANCE: invention elates to petroleum industry, particularly to device for reduction of dynamic loads to rods and at operation of machine-jack pump. Compensator of dynamic loads of pumping rods contains cylinder with stepped plunger, installed with ability of formation of annular space, hydraulically connected by hydraulic channel to cavity under plunger and adapter with thread under submerged rods. Additionally hydraulic channel is implemented on external surface of stepped plunger in the form of spiral helical port, and cavity, formed by stepped plunger and cylinder, is pressurised from cavity of well by dummy plug, installed in thread of adapter.
EFFECT: effectiveness increase of device operation at operation of wells.
3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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|
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| DOWNHOLE SUCKER-ROD PUMPING UNIT | 1995 |
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