Wells – Above ground apparatus – Inner member anchor or seal with valve
Reexamination Certificate
2006-07-04
2006-07-04
Beach, Thomas A (Department: 3671)
Wells
Above ground apparatus
Inner member anchor or seal with valve
C166S095100
Reexamination Certificate
active
07069988
ABSTRACT:
A flow completion system for controlling the flow of fluid from a well bore, the flow completion system comprising a tubing spool which includes a central bore that extends axially therethrough and a production outlet which communicates with the central bore; a tubing hanger which is supported in the central bore and which includes a production bore that extends axially therethrough and a production passageway that communicates between the production bore and the production outlet, the tubing hanger supporting a tubing string which extends into the well bore and defines a tubing annulus surrounding the tubing string; a first closure member which is positioned in the production bore above the production passageway; a first annular seal which is positioned between the tubing hanger and the central bore above the production passageway; wherein the first closure member and the first seal comprise a first pressure-containing barrier between the well bore and a surrounding environment; a second closure member which is positioned in the production bore above the first closure member; and a second annular seal which is positioned between the tubing hanger and the central bore above the first seal; wherein the second closure member and the second seal comprise a second pressure-containing barrier between the well bore and the environment; and wherein both the first and the second barriers are associated with the tubing hanger.
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Bartlett Christopher D.
Cunningham Christopher E.
Gatherar Nicholas
Harrold David
Kent Richard D.
Beach Thomas A
FMC Technologies Inc.
Query, Jr. Henry C.
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