Method and apparatus for the dampening of shocks in the...

Details Method and apparatus for the dampening of shocks in the... Method and apparatus for the dampening of shocks in the...

2011-07-19

2011-07-19

Stephenson, Daniel P (Department: 3676)

Wells

Sonic device

C166S177600

Reexamination Certificate

active

07980301

ABSTRACT:
The method and apparatus for dampening of sudden shocks in the wells filled by liquid wherein the tubing pump is used in which on upstroke of pumping unit the damper plunger and tubing pump plunger are moving in concordance thereby compressing the liquid contained within the damper chamber and allowing the liquid inside the damper chamber to be discharged into the internal volume of tubing string above damper plunger providing a dampening counterforce inside the damper chamber, i.e. when the damper plunger is displaced upwardly in the elongated damper cylinder, the damper plunger having a diameter smaller than diameter of the tubing pump plunger causes the compression of liquid inside the damper chamber thereby creating a dampening force.

REFERENCES:
patent: 3209834 (1965-10-01), Essary
patent: 5586602 (1996-12-01), Vagin
patent: 6015010 (2000-01-01), Kostrov
patent: 6899175 (2005-05-01), Kostrov et al.
patent: 2006/0249286 (2006-11-01), Serdjukov et al.

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