Expandable packer with anchoring feature

Details Expandable packer with anchoring feature Expandable packer with anchoring feature

2006-05-30

2006-05-30

Dang, Hoang (Department: 3672)

Wells

Packers or plugs

With expanding anchor

C166S134000, C166S206000, C166S387000

Reexamination Certificate

active

07051805

ABSTRACT:
An expandable packer or anchor is disclosed. It features a gripping device integral to or mounted in a sleeve over the mandrel and mating undulating surfaces to help maintain grip under changing load conditions. Upon expansion, pressure on a sealing element is enhanced by nodes to increase internal pressure as it engages an outer tubular. Adjacent retaining rings limit extrusion and enhance grip. A gripping device, such as wickers on slips, preferably digs into the outer tubular. The expansion is preferably by pressure and can incorporate pressure intensifiers delivered by slick line or wire line. Release is accomplished by a release tool, which is delivered on slick line or wire line. It stretches the anchor or packer longitudinally, getting it to retract radially, for release. The release tool can be combined with packers or anchors that have a thin walled feature in the mandrel, to release by pulling the mandrel apart.

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Brochure from Owens Tools website, “X-Span Systems”, CoreLab Downhole Solutions, Dec. 18, 2001, 6 pages.
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