Wells – Expansible anchor or casing – Liner hanger
Patent
1994-06-03
1995-10-10
Britts, Ramon S.
Wells
Expansible anchor or casing
Liner hanger
166217, 277117, 277236, 285146, 285348, E21B 3304
Patent
active
054563143
ABSTRACT:
A seal for a wellhead housing employs a locking groove. The seal is of a U-shape, having an inner and outer radially spaced apart legs. An energizing ring is stroked downward to force the legs apart to cause them to seal between the wellhead housing in the conduit and the wellhead housing. At least one groove is located on one side of the energizing ring, with the groove being of a saw-toothed shape to allow entry but to resist upward movement of the energizing ring. In a metal version of a seal, the groove is located on the exterior of the energizing ring so as to allow some axial movement of the inner leg of the seal relative to the energizing ring. In a second version, the seal is of plastic.
REFERENCES:
patent: 2687909 (1954-08-01), Blackman et al.
patent: 3588130 (1971-06-01), Flower et al.
patent: 4595053 (1986-06-01), Watkins et al.
patent: 4622703 (1986-11-01), Cuschera
patent: 4665979 (1987-05-01), Boehm, Jr.
patent: 4742874 (1988-05-01), Gullion
patent: 4751965 (1988-06-01), Cassity
patent: 4781404 (1988-11-01), Tharp et al.
patent: 4932472 (1990-06-01), Boehm, Jr.
patent: 4949786 (1990-08-01), Eckert et al.
patent: 4960172 (1990-10-01), Nelson
patent: 5060724 (1991-10-01), Brammer et al.
patent: 5174376 (1992-12-01), Singeetham
patent: 5246236 (1993-09-01), Szarka et al.
patent: 5285853 (1994-02-01), Eckert et al.
Boehm, Jr. Carl F.
Ford David L.
Henderson, Jr. Herman O.
ABB Vetco Gray Inc.
Bradley James E.
Britts Ramon S.
Tsay Frank S.
LandOfFree
Wellhead annulus seal does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wellhead annulus seal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wellhead annulus seal will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2305187