Full bore internal tieback system and method

Details Full bore internal tieback system and method Full bore internal tieback system and method

1992-04-17

1993-06-29

Novosad, Stephen J.

Wells

Submerged well

Connection or disconnection of submerged members remotely...

166341, 285 24, 285 39, 285397, E21B 33038, F16L 3500, F16L 5700

Patent

active

052225607

ABSTRACT:
A subsea well assembly has ability to receive an internal tieback connector when providing full bore access. The subsea well assembly has an inner wellhead housing which has a counterbore at its upper end. A tieback profile is formed in the counterbore. A protective sleeve releasably secures the counterbore, covering the tieback profile. After drilling is completed and tieback installation begins, the protective sleeve is removed. An internal tieback sleeve carried by a tieback funnel engages the tieback profile in the counterbore to secure the tieback funnel to the inner wellhead housing.

REFERENCES:
patent: 4343495 (1982-08-01), Nobileau et al.
patent: 4681166 (1987-07-01), Cuiper
patent: 4696493 (1987-09-01), Brammer
patent: 4893842 (1990-01-01), Brammer
patent: 4903993 (1990-02-01), Brammer
patent: 4919454 (1990-04-01), Caulfield et al.
patent: 4941691 (1990-07-01), Reimert
patent: 4976458 (1990-12-01), Hosie et al.

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