Gas operated plunger for lifting well fluids

Details Gas operated plunger for lifting well fluids Gas operated plunger for lifting well fluids

1993-12-13

1995-06-27

Gluck, Richard E.

Pumps

Drilled well free piston-type pump

Radially expansible piston portion controls pump and motor...

417 60, F04B 4712

Patent

active

054275040

ABSTRACT:
A gas operated plunger for lifting well fluids from a subterranean reservoir to the surface through a well conduit comprising: a plunger body slidably mountable within the conduit having an upper portion, a lower portion and an intermediate cylindrical portion of reduced diameter; and a sealing assembly surrounding the intermediate cylindrical portion of the plunger body. The sealing assembly may include a plurality of longitudinally divided cylindrical segments of relatively smooth cylindrical surfaces for sliding and sealing contact with the well conduit walls to provide a seal which allows the plunger to gravitate through the well conduit to the reservoir and provides sufficient sealing upon an increase in gas pressure therebelow to elevate the plunger and well fluids thereabove to the surface.

REFERENCES:
patent: 2674951 (1954-04-01), Zaba
patent: 2970547 (1961-02-01), McMurry
patent: 3090315 (1963-05-01), Milton
patent: 3249056 (1966-03-01), Lyles
patent: 4030858 (1977-06-01), Coles

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