Plunger lift tool and method of using the same

Wells – Processes – Producing the well

Reexamination Certificate

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Details

C166S105000, C166S068000, C417S060000

Reexamination Certificate

active

07080691

ABSTRACT:
A plunger lift tool and method of using the same in a well having tubing comprising a tubular housing, having a top portion, a bottom portion, and said housing further defines a passageway therein; a positioning means attached to said housing for removably installing said housing in said well tubing; and a selective sealing means attached to said housing for creating a seal between said housing and said well tubing.

REFERENCES:
patent: 859060 (1907-07-01), Heeter
patent: 2496546 (1950-02-01), Lamb
patent: 2676547 (1954-04-01), Knox
patent: 2884861 (1959-05-01), Renic et al.
patent: 3090316 (1963-05-01), Montgomery
patent: 4984969 (1991-01-01), Fineberg

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