Knuckle swivel for servicing wells

Details Knuckle swivel for servicing wells Knuckle swivel for servicing wells

2007-05-15

2010-02-16

Ferguson, Michael P (Department: 3679)

Joints and connections

With distinct fluid or article handling or directing feature

External reservoir

Reexamination Certificate

active

07661901

ABSTRACT:
A knuckle-swivel (10) is used with well drilling equipment for protecting helical wound line62, which may be wire rope, cable and/or strand, against torsional forces and also providing for angular displacement of sinker bars or other tools during wireline strip over operations to minimize interference with rig equipment (80) when pulling pipe or tools64from a well head.

REFERENCES:
patent: 2954993 (1960-10-01), Scheublein, Jr. et al.
patent: 4128127 (1978-12-01), Taylor
patent: 4913239 (1990-04-01), Bayh, III
patent: 5468153 (1995-11-01), Brown et al.
patent: 5797453 (1998-08-01), Hisaw
patent: 5951061 (1999-09-01), Arlt et al.
patent: 6227292 (2001-05-01), Cooper
patent: 7217056 (2007-05-01), Cooper

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