ANTI-ROTATION DEVICE FOR USE WITH WELL TOOLS

摘要

A drillable, anti-rotation device (10) for limiting the rotation of a downhole tool, such as a cement plug, when drilling out the downhole tool. The drillable, anti-rotation device (10) comprises a drillable sleeve (12) connected within a non-drillable outer tubular member (20) connected within a pipe string. The sleeve (12) has one or more grooves (46) or other indentation, and/or one or more ribs (14) or other protrusions extending inwardly within the interior of the device for gripping or otherwise retarding the rotation of such downhole tool.