Apparatus and methods for preventing or limiting rotation of...

Details Apparatus and methods for preventing or limiting rotation of... Apparatus and methods for preventing or limiting rotation of...

2005-12-13

2005-12-13

Neuder, William (Department: 3672)

Wells

Processes

Cementing, plugging or consolidating

C166S156000, C166S177400, C166S242100

Reexamination Certificate

active

06973969

ABSTRACT:
Methods and apparatus for preventing or limiting the rotation of downhole tools, such as cementing plugs, in a casing string during drillout. The apparatus includes an outer case and a radially expandable sleeve disposed therein. The sleeves will engage cementing plugs received therein. The sleeves radially expand when cementing plugs are received therein to grippingly engage the outer case and prevent or limit rotation thereof during drillout.

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Foreign communication from a related counterpart application dated Sep. 15, 2004.

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