Metal casing hanger seal with expansion slots
This patent describes a well having inner and outer concentric tubular members with an annular clearance therebetween, an improved seal means for sealing in the clearance between the members, comprising in combination: a metal seal ring adapted to be located in the clearance and having inner and outer walls radially separated by an annular cavity; the inner and outer walls each having a seal section for sealing contact with one of the members, and at least one of the walls having a gripping section containing vertical slots therethrough; and an energizing ring movable into a lower energized position in the cavity, wedging the walls of the seal sections tightly against the inner and outer members to form a seal.
- Assignee:
- Hughes Tool Co., Houston, TX
- Patent Number(s):
- US 4665979
- OSTI ID:
- 6533334
- Country of Publication:
- United States
- Language:
- English
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