V-Stab™ Asymmetric Vibration Damping Tool
Description

The V-Stab™ asymmetric vibration damping tool improves performance of hole opening tools, reducing lateral shock and increasing the rate of penetration. An effective solution for drill string vibration damping, the tool produces forward synchronous whirl (FSW), lowering drill string stress. The V-Stab will help you achieve better bit dull condition and better hole quality, improving your overall drilling performance.

Features/Benefits

Minimal Risk – Contains no moving or expanding parts

Versatile – Compatible with both fixed cutter and roller cone bits

Link:
http://www.nov.com/Segments/Wellbore_Technologies/Downhole/Borehole_Enlargement/Performance_Solutions/V_Stab/V-Stab™_Asymmetric_Vibration_Damping_Tool.aspx