Retractable downhole backup assembly for circumferential...

Details Retractable downhole backup assembly for circumferential... Retractable downhole backup assembly for circumferential...

2009-01-28

2010-10-05

Neuder, William P (Department: 3672)

Wells

Packers or plugs

With expanding anchor

Reexamination Certificate

active

07806177

ABSTRACT:
A packer features spaced apart sealing elements with an extrusion barrier between them. When the packer is set the extrusion barrier is protected from debris in the well. The barrier provides full circumferential extrusion protection using one or more rings made of wedge shaped segments that have a keyway at their edges and are assembled in an alternating manner so as to be able to increase or decrease in diameter when mandrel components are moved toward or away from each other. The segments have an opening through which a mandrel projection extends so as to force the segments into the smaller diameter for removal. Travel stops for the segments in the form of machined flats are provided on the relatively movable mandrel components.

REFERENCES:
patent: 2715441 (1955-08-01), Bouvier
patent: 4311196 (1982-01-01), Beall et al.
patent: 5487427 (1996-01-01), Curington
patent: 5542473 (1996-08-01), Pringle
patent: 7222669 (2007-05-01), Sonnier et al.
patent: 7290603 (2007-11-01), Hiorth et al.
patent: 7614449 (2009-11-01), Anderson
patent: 2003/0188862 (2003-10-01), Streich et al.
patent: 2009/0126925 (2009-05-01), Guest et al.
BTU, HPHT Retrievable Packer/Plug; Bronnteknologiutvikling; 2005; 1 page.
MacKenzie, Gordan R.J., et al.; “Hydraulics As It Affects Our Tools—The Inflatable Paradox”, SPE 89537, Mar. 2004, 1-7.
Coronado, Martin P., “Development of an Internal Coiled Tubing Connector Utilizing Permanent Packer Technology”, SPE 46036, Apr. 1998, 139-148.
Chapman, I.C., et al., “Wireline Deployed Meal Sealing Bridge Plug System: Operational Learning Curve and Subsequent Redevelopment” SPE 113891, Apr. 2008, 1-13.

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