Wells – Valves – closures or changeable restrictors – Longitudinally movable operator
Patent
1991-08-28
1994-05-31
Melius, Terry Lee
Wells
Valves, closures or changeable restrictors
Longitudinally movable operator
166386, 166387, E21B 3414
Patent
active
053160843
ABSTRACT:
A downhole well tool is provided which includes a shifting sleeve for opening a flow communication port. The well tool includes first and second primary seal elements positioned upstream and downstream, respectively, of the port as well as upstream and downstream of the threaded connections between the well tool and sections of tubing forming the well flow conduit. A fluid diffuser element may be included to abate flow damage across the primary seal elements during the shifting of the sleeve. A method of selectively transmitting fluid incorporating said well tool also is disclosed.
REFERENCES:
patent: 3051243 (1958-12-01), Grimmer et al.
patent: 3071193 (1960-06-01), Raulins
patent: 3395758 (1964-05-01), Kelly et al.
patent: 3414060 (1967-11-01), Zak
Coon Robert J.
Hopmann Mark E.
Jennings Steve
Murray Douglas J.
Tips Timothy R.
Baker Hughes Incorporated
Handley Mark W.
Hunn Melvin A.
Melius Terry Lee
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