Internal tubing hanger lockdown

Details Internal tubing hanger lockdown Internal tubing hanger lockdown

1993-09-27

1994-08-30

Britts, Ramon S.

Wells

Processes

Placing or shifting well part

166 751, 166208, E21B 2302

Patent

active

053418859

ABSTRACT:
An internal lockdown will lock a tubing hanger in a wellhead housing. The tubing hanger has a conical cam surface formed on the exterior. An internal profile is located in the bore of the housing in alignment with the cam surface. A landing sub secures to a threaded bore of the tubing hanger and protrudes above. A carrier ring mounts to exterior threads formed on the landing sub. The carrier ring carries a set of segmented dogs. After the tubing hanger lands, the landing sub is unscrewed relative to the tubing hanger and carrier ring assembly. Then, the landing sub is lowered, pushing the dogs out into engagement with the profile.

REFERENCES:
patent: 3603401 (1971-09-01), Nelson
patent: 3924678 (1975-12-01), Ahlstone
patent: 4465134 (1984-08-01), Watkins
patent: 4540053 (1985-09-01), Baugh et al.
patent: 4561499 (1985-12-01), Berner, Jr. et al.
patent: 4597448 (1986-07-01), Baugh
patent: 4615544 (1986-10-01), Baugh
patent: 4651831 (1987-03-01), Baugh
patent: 4880061 (1989-11-01), Ahlstone

Affiliated with

Also associated with

Rating

Internal tubing hanger lockdown 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 tubing hanger lockdown, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Internal tubing hanger lockdown will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-24832