Haynes and Boone, LLP
Downhole tool vibration device and method
In some embodiments, an apparatus and a system, as well as a method and an article, may operate to select a longitudinal axis within a borehole, and to move a down hole housing using at least one set of rollers attached to the housing to contact a surface of the borehole, so that simultaneous movement with two rotational degrees of freedom is enabled within the borehole. The centerline of the housing can be substantially aligned with a selected longitudinal axis while the housing moves along the selected longitudinal axis. Additional apparatus, systems, and methods are disclosed.
Halliburton Energy Services, Inc.
E E E E
E21B E21B E21B E21B
inventional inventional inventional inventional
Chung
Chang