Wwt North America Holdings, Inc.

Sarah Banks

Norman Bruce Moore

Eric Gollmyer

A non-rotating drill pipe protector comprising a collar for attachment to a drill pipe and a sleeve positioned around the collar wherein drilling fluid passing between flexible bearing surfaces between the collar and the sleeve generate hydrodynamic bearings in both an axial and thrust direction of the drill pipe.

Non-rotating drill pipe protector tool having multiple types of hydraulic bearings

An anti-vibration sub for a downhole drill string having a shortened section of steel drill pipe having a reduced diameter body portion with a plurality of axially spaced annular rings and a non-rotating protector sleeve molded to the smaller diameter body portion having an outside diameter that is equal to or greater than the drill string causing the sub to act as a nodal point to absorb vibrational energy from the drill string.

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Fullerton, CA, United States of America

Sarah Banks