Internal drilling riser tieback

Details Internal drilling riser tieback Internal drilling riser tieback

1995-06-30

1996-10-22

Dang, Hoang C.

Wells

Submerged well

Connection or disconnection of submerged members remotely...

285 18, 285 23, E21B 33038

Patent

active

055667619

ABSTRACT:
A tieback adapter will connect a tieback string between a subsea wellhead assembly and a platform at the surface. The tieback adapter has a housing in which a sub is carried. The sub has a lower end which contains a seal for sealingly engaging an internal sealing surface of a casing hanger located within the subsea wellhead assembly. The sub is connected on its upper end to the tieback string. The housing has a locking element which locks to an internal locking profile of the subsea wellhead assembly. A retainer carries the sub in an upward position within the housing while the tieback adapter is being lowered into the subsea wellhead assembly. A release device will release the retainer from the sub in response to the landing of the housing in the subsea wellhead assembly. This allows the sub to move downward. A cam surface on the sub simultaneously moves the locking element into engagement with the locking profile and the subsea wellhead assembly housing.

REFERENCES:
patent: 4046405 (1977-09-01), Bonds
patent: 4408784 (1983-10-01), Reimert
patent: 4456070 (1984-06-01), Watkins
patent: 4519633 (1985-05-01), Nichols
patent: 4681166 (1987-07-01), Cuiper
patent: 4819967 (1989-04-01), Calder et al.
patent: 4893842 (1990-01-01), Brammer
patent: 4919454 (1990-04-01), Caulfield et al.
patent: 4976458 (1990-12-01), Hosie et al.
patent: 5222560 (1993-06-01), Brammer et al.
patent: 5255743 (1993-10-01), Adam et al.
patent: 5279369 (1994-01-01), Brammer
patent: 5299642 (1994-04-01), Nelson et al.
patent: 5368335 (1994-11-01), Dinnes

Affiliated with

Also associated with

Rating

Internal drilling riser tieback does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Internal drilling riser tieback, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Internal drilling riser tieback will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2352282