Internal shock absorber bypass plunger
AssigneeProduction Control Services, Inc.
InventorBruce Victor
Life of this patent
Estimating the term…
Abstract
An improved bypass plunger mechanism apparatus has one or more internal shock absorbing elements within a captive actuator, a fixed or variable bypass valve, and a hallow mandrel to improve reliability and well flow production levels in high liquid wells. Energy due to impact shock resulting from the plunger hitting the top or the bottom of the well is absorbed by one or more internal shock absorber elements. Efficiency of well flow is increased by the addition of a variable bypass orifice, which can be preset in numerous positions to vary the amount of liquid bypass allowed depending on the well loading parameters. The plunger mechanism of the present invention increases well efficiency by reducing failure due to damage in the well top, well bottom and plunger apparatus.
Claims17
A plunger comprising:
- a cylindrical body having an upper and a lower end;
- the lower end having a bypass valve assembly;
- said bypass valve assembly comprising;
- a moveable actuator rod;
- a cylinder wall housing the actuator rod;
- said cylinder wall having a bypass orifice;
- wherein said moveable actuator rod opens and closes an inlet to an internal conduit in the plunger, a closed position defined as the moveable actuator rod being forced into the cylinder wall;
- an internal shock absorbing assembly located between the bypass valve assembly and the cylindrical body;
- and
- wherein a falling or a rising of the plunger results in the plunger hitting a well stop causing the internal shock absorbing assembly to absorb a portion of an impact force created by the plunger striking the stop.
The plunger comprising:
- a mandrel portion having an internal conduit;
- an internal shock absorbing assembly connected to the mandrel portion;
- a lower end bypass valve assembly connected to the internal shock absorbing assembly;
- and
- wherein a falling or a rising of the plunger results in the plunger hitting a well stop causing the internal shock absorbing assembly to absorb a portion of an impact force created by the plunger striking the stop.
A plunger comprising:
- a mandrel means having an internal conduit means functioning to pass fluids through a casing of the plunger;
- an internal shock absorbing means connected to the mandrel portion and functioning to absorb a portion of an impact force created by the plunger striking a well stop;
- and
- a lower end bypass valve means connected to the internal shock absorbing assembly and functioning to pass fluids to the mandrel means in an open mode, and block fluids in a closed mode.
Dependencies are inferred from the claim text.