Production plunger

Details Production plunger Production plunger

1989-01-23

1989-12-26

Croyle, Carlton R.

Pumps

Drilled well free piston-type pump

4175552, F04B 4712

Patent

active

048894737

ABSTRACT:
A production plunger is disclosed that will automatically reciprocate in the production string of a producing oil well that is also producing some gas. The plunger includes a body having a passageway that allows fluid to bypass the packer cups carried by the body. A valve in the passageway is held open by a bellows filled with air under pressure. The valve is closed by the pressure of the liquid accumulated above the plunger at which time, the gas produced by the well will lift the plunger and the liquid above it to the surface.

REFERENCES:
patent: 862867 (1907-08-01), Eggleston
patent: 1836871 (1931-12-01), Ricker
patent: 1846000 (1932-03-01), Fletcher
patent: 1919547 (1933-07-01), Fletcher
patent: 1943553 (1934-01-01), Ricker
patent: 4070134 (1978-01-01), Gramling
patent: 4113010 (1978-12-01), Gramling
patent: 4712981 (1987-12-01), Gramling

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