Production casing tieback connector assembly

Details Production casing tieback connector assembly Production casing tieback connector assembly

1981-03-06

1983-10-11

Callaghan, Thomas F.

Pipe joints or couplings

With assembly means or feature

Guide and support

285143, F16L 5500

Patent

active

044087845

ABSTRACT:
A connector assembly for connecting a production casing (38) to a subsea wellhead (10) from a tensioned leg platform. A funnel (46) external to the wellhead, guides and aligns the conductor during installation and places a limit on the angular deflection of the conductor relative to the wellhead. The conductor includes at its lower end a tieback joint (44) which is pulled down, aligned, and sealed against the casing hanger (24) with a floating bushing (64) which also preloads the seal (66). The flexibility of the tieback joint (44) in relation to the angular deflection permitted is such that the surfaces of the seal (66) will not move; and preferably the preload on the seal is not removed.

REFERENCES:
patent: 2122071 (1938-06-01), Rasmussen et al.
patent: 2768841 (1956-10-01), Allen
patent: 3330341 (1967-07-01), Jackson, Jr. et al.
patent: 3347567 (1967-10-01), Watkins
patent: 3924679 (1975-12-01), Jansen, Jr.

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