Wells – Processes – Producing the well
Reexamination Certificate
2006-07-25
2006-07-25
Bagnell, David (Department: 3672)
Wells
Processes
Producing the well
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
Bagnell David
Collins Giovanna
Ozinga Martin G.
Phillips McFall McCaffrey McVay & Murrah, P.C.
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