Misalignment tieback tool - swivel connection

Pipe joints or couplings – With assembly means or feature

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Details

285 39, 285 24, 285 27, 285321, 285308, 166344, 166345, F16L 3500

Patent

active

046118292

ABSTRACT:
A tieback tool (10) for connecting tieback conductors (12) to a well system (14) where there is misalignment between the tool and the well system including a body (40) rigidly connected to the tieback conductor (12), a stab connector (12) swivel mounted on said body and free to align with the well system during initial contact between the tieback tool and the well system, and an internal straightening stab (60) which is extended by rotation into the well system to finally align the tieback tool with the well system. In one embodiment, the tieback conductor (12) is not rotated to make up the final connection of the tool and the well system, the straightening stab (60) is extended into the well system by a rotatable torquing tool (66), and the stab connector (16) locks on to the well system by a lock ring (32). In the second embodiment, the tieback conductor (18) is rotated to make up the connection of the tool (10A) with the well system (14A), it is the body (40) itself which acts as the strightening stab (60A) by rotation of the tieback conductor (18), and the stab connector (16A) locks into the well system by threads (90, 112). In both embodiments, the stab connector (16, 16A) is swivel mounted in the tool.

REFERENCES:
patent: 3345087 (1967-10-01), Hanes et al.
patent: 4138148 (1979-02-01), Zaremba
patent: 4139222 (1979-02-01), Loland
patent: 4277875 (1981-07-01), Worrell
patent: 4289206 (1981-09-01), Kirkland
patent: 4343495 (1982-08-01), Nobileau et al.

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