Internal tieback connector

Details Internal tieback connector Internal tieback connector

1989-10-16

1990-12-11

Arola, Dave W.

Pipe joints or couplings

With assembly means or feature

Guide and support

285 39, 285141, 285921, 166344, 166348, 166382, F16L 3500

Patent

active

049764586

ABSTRACT:
A tieback system for a subsea well utilizes a tieback connector. The tieback connector has a body that lands on a wellhead housing located on a sea floor. A funnel extends downward from the body for sliding over the wellhead housing. A lockdown sub is carried by the body and has a set of tapered threads on its exterior. A lock ring is carried by the lockdown sub. The lock ring has an exterior profile for engaging an internal groove formed in the wellhead housing. Rotating the lockdown sub moves it downward from a recessed position to a locking position. In that position, the rotation causes makeup to the threads and causes the lock ring profile to tightly engage the groove in the wellhead housing.

REFERENCES:
patent: 4528738 (1985-07-01), Galle, Jr.
patent: 4550782 (1985-11-01), Lawson
patent: 4903992 (1990-02-01), Jennings et al.

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