Patents Assigned to Nov Worldwide C.V.
  • Wellbore percussion adapter and tubular connection
    Patent number: 9624725
    Abstract: A percussion adapter that is driven to generate a percussive axial motion on a wellbore structure. One percussion adapter includes a drive connection to mechanically convert rotational drive to axially directed percussive motion. Another percussion adapter employs a valve that creates back pressure causing axially directed percussive motion. A wellbore tubular connection that transitions torque to resist back off when left hand or right hand torque is applied.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: April 18, 2017
    Assignee: NOV Worldwide C.V.
    Inventor: Bradley R. Cote
  • Wellbore percussion adapter and tubular connection
    Patent number: 8739901
    Abstract: A percussion adapter that is driven to generate a percussive axial motion on a wellbore structure. One percussion adapter includes a drive connection to mechanically convert rotational drive to axially directed percussive motion. Another percussion adapter employs a valve that creates back pressure causing axially directed percussive motion. A wellbore tubular connection transitions torque to resist back off when left hand or right hand torque is applied.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: June 3, 2014
    Assignee: Nov Worldwide C.V.
    Inventor: Bradley R. Cote