Water ingress seal for tapered seals
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United States of America Patent
Stats
-
Sep 17, 2002
Grant Date -
Nov 29, 2001
app pub date -
Feb 1, 2001
filing date -
Feb 1, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A wellhead housing includes a metal seal with a ring portion and a rib portion. The ring portion includes two frustoconical surfaces for mating with tapered surfaces of a wellhead connector and the wellhead housing. Two conical, metal-to-metal seals are created where the ring portions of the seal engage the tapered surfaces of the wellhead connector and housing. These metal-to-metal seals contain internal pressure within the wellhead. Two legs extend outward from the rib portion. An upward-facing foot surface at the end of the top leg engages the wellhead connector, while a downward-facing foot surface at the end of the bottom leg engages the wellhead housing. A metal-to-metal seal created between each foot surface and the corresponding tubular member resists external pressure to prevent water ingress into the joint.
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