Pipe joints or couplings – Particular interface – Tapered
Patent
1982-06-04
1986-04-15
Callaghan, Thomas F.
Pipe joints or couplings
Particular interface
Tapered
285350, 285355, 285DIG18, F16L 1500
Patent
active
045823499
ABSTRACT:
A metal-to-metal fluid tight seal configuration formed between two abutting tubular members for use in subterranean oil and gas wells is disclosed. A metal-to-metal fluid tight seal is utilized in a shear release expansion joint assembly mounted by means of an anchor seal assembly in a conventional downhole packer. Sealing engagement is provided by plastic deformation of an annular seal ring between two abutting tubular members which are less ductile than the seal ring. In the preferred embodiment the metal-to-metal fluid tight seal is formed between abutting box and pin tubular members and the plastic deformation of the circular ring occurs as the ring is received within a groove in one of the abutting tubular members which has a dissimilar profile in comparison to the cross-section of the circular ring. Plastic deformation occurs as the box and pin members are rotationally threaded together and a continuous fluid tight seal is maintained along surfaces of both tubular members.
REFERENCES:
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patent: 2553222 (1951-05-01), Wallgren et al.
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patent: 3298718 (1967-01-01), Hansen
patent: 3467413 (1969-09-01), Madrelle
patent: 3615109 (1971-10-01), Brinda et al.
patent: 3618989 (1971-11-01), Yoshinori
patent: 3831951 (1974-08-01), Patel et al.
Chenoweth David V.
McStravick David M.
Smith Everett H.
Baker Oil Tools, Inc.
Callaghan Thomas F.
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