Patents by Inventor Martyn Ian Greensmith

Martyn Ian Greensmith 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).

  • System and method for measurements of depth and velocity of instrumentation within a wellbore
    Patent number: 7350410
    Abstract: A survey tool for use in a wellbore includes a downhole portion having an axis. The downhole portion is adapted to move within the wellbore with the axis generally parallel to the wellbore. The survey tool further includes a first acceleration sensor mounted at a first position within the downhole portion. The first acceleration sensor is adapted to generate a first signal indicative of an acceleration of the first acceleration sensor along the axis. The survey tool further includes a second acceleration sensor mounted at a second position within the downhole portion. The second position is spaced from the first position by a non-zero distance along the axis. The second acceleration sensor is adapted to generate a second signal indicative of an acceleration of the second acceleration sensor along the axis.
    Type: Grant
    Filed: May 20, 2005
    Date of Patent: April 1, 2008
    Assignee: Gyrodata, Inc.
    Inventors: Roger Ekseth, Martyn Ian Greensmith
  • System and method for measurements of depth and velocity of instrumentation within a wellbore
    Patent number: 6957580
    Abstract: A survey tool for use in a wellbore includes a downhole portion having an axis. The downhole portion is adapted to move within the wellbore with the axis generally parallel to the wellbore. The survey tool further includes a first acceleration sensor mounted at a first position within the downhole portion. The first acceleration sensor is adapted to generate a first signal indicative of an acceleration of the first acceleration sensor along the axis. The survey tool further includes a second acceleration sensor mounted at a second position within the downhole portion. The second position is spaced from the first position by a non-zero distance along the axis. The second acceleration sensor is adapted to generate a second signal indicative of an acceleration of the second acceleration sensor along the axis.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: October 25, 2005
    Assignee: Gyrodata, Incorporated
    Inventors: Roger Ekseth, Martyn Ian Greensmith