Pressure energized seal

Details Pressure energized seal Pressure energized seal

2007-11-27

2010-06-22

Stephenson, Daniel P (Department: 3676)

Wells

Processes

Placing or shifting well part

C166S084100, C166S085300, C277S605000, C277S644000

Reexamination Certificate

active

07740080

ABSTRACT:
A seal for use in sealing on a wellhead assembly, where the seal is pressure energized and comprises an annular element having an inverted portion on its outer portion along its length. The seal may further include upper and lower ring members sandwiching the element between the ring members. The seal is formable by adjoining the open surfaces of two “W” shaped annular seals along their edges thereby forming an element responsive to pressure.

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