Borehole retention device

Details Borehole retention device Borehole retention device

2005-08-30

2005-08-30

Bagnell, David (Department: 3672)

Wells

Expansible anchor or casing

Expansible means translated by wedge or cam

C166S243000, C166S382000

Reexamination Certificate

active

06935423

ABSTRACT:
A borehole retention assembly for anchoring a well tool within a wellbore including a gripping assembly and an actuation assembly. The gripping assembly includes expandable members such that upon expanding the expandable members, the gripping assembly engages the wall of the borehole. The gripping assembly includes a pair of expandable members and a medial member, the members having cooperating tapered surfaces therebetween such that upon the actuation assembly contracting the gripping assembly, the expandable members are cammed outwardly against the borehole wall. The gripping assembly is mounted on a mandrel enabling them to resist rotational and axial forces on the well tool. When engaged, space is provided on each side of the borehole retention assembly such that annular flow is permitted therearound.

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