Seal

Details Seal Seal

1977-04-07

1978-08-29

Shedd, Wayne L.

Pipe joints or couplings

Pipe to discreet nipple or sleeve to plate

Expandable detent engages plate to hold nipple

285340, 285348, E21B 910

Patent

active

041099427

ABSTRACT:
An oil well pipe suspension apparatus including a wellhead having a pipe hanger supported therein and a christmas tree supported thereon, a frusto-conical metal gasket providing a metal-to-metal seal between the hanger and the wellhead, and an "X" cross section resilient metal gasket providing a metal-to-metal seal between the hanger and the christmas tree.

REFERENCES:
patent: 1825962 (1931-10-01), Laird
patent: 2417181 (1947-03-01), Sandilands
patent: 2830665 (1958-04-01), Burns et al.
patent: 2992840 (1961-07-01), Reynolds et al.
patent: 3011804 (1961-12-01), Burns
patent: 3284111 (1966-11-01), Pinkard
patent: 3305015 (1967-02-01), Brown et al.
patent: 3463518 (1969-08-01), Broussard et al.
patent: 4056272 (1977-11-01), Morrill

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