Patents by Inventor Mikal Dreggevik

Mikal Dreggevik 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).

  • Method and device for the controlled disconnection of a wireline
    Patent number: 7343979
    Abstract: A method and device for controlling the disconnection of a wireline (4), of the kind used in wireline operations in a wellbore, from a wireline tool (8), the wireline (4) being provided with a conductor (6) arranged to communicate signals, the signals being monitored at the wire-line tool (8) by means of a lower monitoring and control circuit (24), and the lower monitoring and control circuit (24) activating, by disappearance of signals from the surface, a disconnect device (12) after a predetermined time, the disconnect device (12) being arranged to disconnect the wireline (4) from the wireline tool (8).
    Type: Grant
    Filed: April 1, 2004
    Date of Patent: March 18, 2008
    Assignee: Smedvig Offshore AS
    Inventor: Mikal Dreggevik
  • Method and device for the controlled disconnection of a wireline
    Publication number: 20070023191
    Abstract: A method and device for controlling the disconnection of a wireline (4), of the kind used in wireline operations in a wellbore, from a wireline tool (8), the wireline (4) being provided with a conductor (6) arranged to communicate signals, the signals being monitored at the wire-line tool (8) by means of a lower monitoring and control circuit (24), and the lower monitoring and control circuit (24) activating, by disappearance of signals from the surface, a disconnect device (12) after a predetermined time, the disconnect device (12) being arranged to disconnect the wireline (4) from the wireline tool (8).
    Type: Application
    Filed: April 1, 2004
    Publication date: February 1, 2007
    Inventor: Mikal Dreggevik