Wells – Above ground apparatus – Inner member anchor or seal with valve
Reexamination Certificate
2006-08-29
2006-08-29
Beach, Thomas A (Department: 3671)
Wells
Above ground apparatus
Inner member anchor or seal with valve
C166S095100
Reexamination Certificate
active
07096937
ABSTRACT:
A flow completion system for controlling the flow of fluid from a well bore comprises 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 is supported in the central bore and includes a production bore that extends axially therethrough and a production passageway that communicates between the production bore and the production outlet. A first closure member is positioned in the production bore above the production passageway, and a first metal seal is positioned concentrically between the tubing hanger and the central bore above the production passageway. In addition, a second closure member is positioned in the production bore above the first closure member, and a second metal seal is positioned concentrically between the tubing hanger and the central bore above the first seal. In this manner, the first closure member and the first seal comprise a first pressure-containing barrier between the well bore and a surrounding environment, and the second closure member and the second seal comprise a second pressure-containing barrier between the well bore and the environment.
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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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