Anti-rotation device

Details Anti-rotation device Anti-rotation device

1997-12-30

2000-03-28

Tsay, Frank

Wells

Expansible anchor or casing

Liner hanger

166209, 166382, E21B 3304

Patent

active

060418591

ABSTRACT:
An anti-rotation device for use with concentric tubing hangers is disclosed. The anti-rotation device can be used as part of the emergency release system that provides for manually releasing and removing the tubing hanger running tool in the event the hydraulic release mechanism fails. The anti-rotation device can be retrofitted into existing tubing hangers without modification to the surrounding casing or spool body.

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patent: 5620052 (1997-04-01), Turner
patent: 5735344 (1998-04-01), Duncan
patent: 5823254 (1998-10-01), Dobson et al.

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