Metal casing hanger seal with expansion slots

Details Metal casing hanger seal with expansion slots Metal casing hanger seal with expansion slots

1985-09-06

1987-05-19

Leppink, James A.

Wells

Expansible anchor or casing

Liner hanger

166217, 277117, 277236, 285146, 285348, E21B 3304

Patent

active

046659790

ABSTRACT:
A casing hanger seal for a subsea well uses a seal ring having inner and outer walls spaced radially apart from each other. An energizing ring is moved from disengaged position to an engaged position between the walls, wedging them apart to form the metal seal. Vertical slots are formed in the walls to facilitate expansion. The slots ae located in a gripping section that engages wickers formed on the inner and outer tubular members of the well. Circumferential grooves are located in the sealing areas.

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SG Wellhead Systems, Metal-To-Metal Casing Annulus Seal.
The McEvoy "Z-1" Wellhead System.

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