Patents by Inventor DIRK BOSMAN

DIRK BOSMAN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Apparatus and method for damping vibration in a drill string
    Patent number: 9458679
    Abstract: An apparatus and method for damping vibration, especially torsional vibration due to stick-slip, in a drill string, Sensors measure the instantaneous angular velocity of the drill string at one or more locations along the length of the drill string. One or more vibration damping modules are also spaced along the length of the drill string. When torsional vibration above a threshold is detected, the damping module imposes a reverse torque on the drill that dampens the torsional vibration. The reverse torque can be created by imparting a frictional resistance to the rotation of the drill string. The frictional resistance can be created externally, by extending friction pads from the damping module so that they contact the bore hole wall and drag along the bore hole as the drill string rotates, or internally by anchoring a housing mounted on the drill string to the wall of the bore hole and then imposing frictional resistance on a fluid, such as a magnetorheological fluid, flowing within the drill string.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: October 4, 2016
    Assignee: APS Technology, Inc.
    Inventors: William Evans Turner, Mark Hutchinson, Dirk Bosman, Mark Ellsworth Wassell, Carl Allison Perry, Martin E. Cobern
  • Apparatus And Method For Damping Vibration In A Drill String
    Publication number: 20120228028
    Abstract: An apparatus and method for damping vibration, especially torsional vibration due to stick-slip, in a drill string, Sensors measure the instantaneous angular velocity of the drill string at one or more locations along the length of the drill string. One or more vibration damping modules are also spaced along the length of the drill string. When torsional vibration above a threshold is detected, the damping module imposes a reverse torque on the drill that dampens the torsional vibration. The reverse torque can be created by imparting a frictional resistance to the rotation of the drill string. The frictional resistance can be created externally, by extending friction pads from the damping module so that they contact the bore hole wall and drag along the bore hole as the drill string rotates, or internally by anchoring a housing mounted on the drill string to the wall of the bore hole and then imposing frictional resistance on a fluid, such as a magnetorheological fluid, flowing within the drill string.
    Type: Application
    Filed: March 7, 2011
    Publication date: September 13, 2012
    Applicant: APS TECHNOLOGY, INC.
    Inventors: WILLIAM EVANS TURNER, MARK HUTCHINSON, DIRK BOSMAN, MARK ELLSWORTH WASSELL, CARL ALLISON PERRY, MARTIN E. COBERN