High expansion slip system

Details High expansion slip system High expansion slip system

1997-09-27

2000-02-22

Neuder, William

Wells

Expansible anchor or casing

With wedge or cam and friction drag

166217, E21B 2308

Patent

active

060268999

ABSTRACT:
A high expansion slip system for anchoring a tool to a downhole wellbore surface. A slip is initially retained within the interior volume of a tool body for installation downhole in the wellbore. The slip has an inclined surface which moves the slip radially outwardly when the slip is move axially along a longitudinal axis through the tool body. Two opposing slips can be operated to center the tool body within the wellbore, and the setting of the two slips can be synchronized to control the tool body position and setting force on each slip. After the slips have been moved from the interior space to engage the wellbore surface, the hollow interior space within the tool body is unobstructed to open an unobstructed flow path for passage of fluids or well tools.

REFERENCES:
patent: 4437517 (1984-03-01), Bianchi et al.
patent: 5348090 (1994-09-01), Leismer
patent: 5487427 (1996-01-01), Curington

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