Patent ID: 9399894
Filing Date: 2016-07-26
CPC Classification: E21B

Claim Text:
1. An adjustable centralizer assembly comprising: a) a first connection member defining an inner bore; b) a second connection member defining an inner bore; c) an elongate body member having an outer surface and a longitudinal axis, wherein said elongate body member is rotatably disposed within said inner bores of said first and second connection members; d) a plurality of centralizer members pivotally disposed along said outer surface of said elongate body member, wherein said centralizer members are adjustably extendable radially from said body member; e) at least one wedge shaped member at least partially disposed between at least one centralizer member and the outer surface of said body member, wherein movement of said at least one wedge shaped member in a direction parallel to said longitudinal axis of said body member causes said at least one centralizer member to extend radially outward from said body member; and f) at least one omni-directional friction reducing element disposed on at least one of said centralizers, wherein said omni-directional friction reducing element comprises a ball transfer assembly.