NON-ROTATING STABILIZER

non-rotating stabilizer (rubber sleeve stabilizer) is able to avoid blade wear

and wall damage during drilling. The non-rotating stabilizer consists of mandrel,

copper washer, rubber sleeve, spacer sleeve and self-locking lower sub.

During drilling, the non-rotating stabilizer transfers the torque by means of mandrel.

The rubber sleeve is sliding and moving relative to the mandrel and it plays a role

in stabilizing the well. A locking clutch (self-locking lower sub) will help to avoid

sleeve rotation during washover operation.