1
Charles H Dewey, Wei Xu: Expandable underreamer/stabilizer. Smith International, Conley Rose P C, May 11, 2004: US06732817 (218 worldwide citation)

A downhole tool that functions as an underreamer, or alternatively, as a stabilizer in an underreamed borehole. The tool includes one or more moveable arms disposed within a body having a flowbore therethrough in fluid communication with the wellbore annulus. The tool alternates between collapsed an ...


2
Charles H Dewey, Wei Xu: Expandable underreamer/stabilizer. Smith International, Conley Rose P C, Shannon W Bates, May 23, 2006: US07048078 (80 worldwide citation)

A downhole tool that functions as an underreamer or as a stabilizer in an underreamed borehole. The tool includes one or more moveable arms disposed within a body having a flowbore therethrough in fluid communication with the wellbore annulus. The tool alternates between collapsed and expanded posit ...


3
Manoj D Mahajan, Daniel W Brietzke, Nathan E Fuller, James A Barnhouse, Georges Ishak: Underreamer for increasing a bore diameter. SMITH INTERNATIONAL, March 13, 2018: US09915100

An underreamer for increasing the diameter of a bore. The underreamer includes a substantially cylindrical body. A mandrel may extend axially through the body. One or more cutter blocks are movably coupled to the body. A ratio of a height of the cutter block to a diameter of the body is between abou ...


4
Manoj D Mahajan, Daniel W Brietzke, Nathan Fuller, James Barnhouse, Georges Ishak: Underreamer for increasing a bore diameter. SMITH INTERNATIONAL, March 13, 2018: US09915101

An underreamer for increasing the diameter of a bore. The underreamer includes a substantially cylindrical body having an axial bore therein. A mandrel may extend axially through the axial bore. One or more cutter blocks are movably coupled to the body. A ratio of a height of the cutter block to a d ...


5
Dewey Charles H, Xu Wei: Elargisseur/stabilisateur extensible, Expandable underreamer/stabilizer. Smith International, Smith International, DEETH WILLIAMS WALL, November 28, 2006: CA2417318

A downhole tool is disclosed that functions as an underreamer, or alternatively, as a stabilizer in an underrearned borehole. An embodiment of the tool includes one or more moveable arms disposed within a body having a flowbore therethrough in fluid communication with the wellbore annulus. The tool ...


6
Dewey Charles H, Xu Wei: Elargisseur/stabilisateur extensible, Expandable underreamer/stabilizer. Smith International, Smith International, Deeth Williams Wall, October 19, 2010: CA2668910

A downhole tool is disclosed that functions as an underreamer, or alternatively, as a stabilizer in an underreamed borehole. An embodiment of the tool includes one or more moveable arms disposed within a body having a flowbore therethrough in fluid communication with the wellbore annulus. The tool a ...


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DEWEY CHARLES H, XU WEI: ELARGISSEUR/STABILISATEUR EXTENSIBLE, EXPANDABLE UNDERREAMER/STABILIZER. SMITH INTERNATIONAL, SMITH INTERNATIONAL, DEETH WILLIAMS WALL, September 15, 2009: CA2557923

A downhole tool is disclosed that functions as an underreamer, or alternatively, as a stabilizer in an underreamed borehole. An embodiment of the tool includes one or more moveable arms disposed within a body having a flowbore therethrough in fluid communication with the wellbore annulus. The tool a ...


9
Charles H Dewey, Wei Xu: Expandable underreamer/stabilizer. Smith International, Conley Rose PC, October 21, 2004: US20040206549-A1

A downhole tool that functions as an underreamer or as a stabilizer in an underreamed borehole. The tool includes one or more moveable arms disposed within a body having a flowbore therethrough in fluid communication with the wellbore annulus. The tool alternates between collapsed and expanded posit ...


10
Charles H Dewey, Wei Xu: Expandable underreamer/stabilizer. Conley Rose PC, August 21, 2003: US20030155155-A1

A downhole tool is disclosed that functions as an underreamer, or alternatively, as a stabilizer in an underreamed borehole. An embodiment of the tool includes one or more moveable arms disposed within a body having a flowbore therethrough in fluid communication with the wellbore annulus. The tool a ...