Patents by Inventor Per Schjølberg-Henriksen

Per Schjølberg-Henriksen 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).

  • Sensor unit for a logging tool and a logging tool with at least two sensor elements
    Patent number: 8726726
    Abstract: The present invention concerns a dynamic pressure sensor unit (5A) for a logging tool for hydrocarbon wells with a piezoelectric element (5) in a sensor sleeve (3). The piezoelectric element (5) is a tubular element with an inner and an outer diameter. The sensor sleeve (3) has an inner cylindrical area with an inner diameter greater than the outer diameter of the tubular piezoelectric element (5). The piezoelectric element is situated in the inner cylindrical area of the sensor sleeve (3). A gap (12) with a gap thickness is formed between the inner cylindrical area of the sensor sleeve (3), defining an annular volume. The gap is filled with a noise transmitting liquid.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: May 20, 2014
    Assignee: Sinvent AS
    Inventors: Truls Fallet, Per Schjølberg-Henriksen
  • SENSOR UNIT FOR A LOGGING TOOL AND A LOGGING TOOL WITH AT LEAST TWO SENSOR ELEMENTS
    Publication number: 20120144913
    Abstract: The present invention concerns a dynamic pressure sensor unit (5A) for a logging tool for hydrocarbon wells with a piezoelectric element (5) in a sensor sleeve (3). The piezoelectric element (5) is a tubular element with an inner and an outer diameter. The sensor sleeve (3) has an inner cylindrical area with an inner diameter greater than the outer diameter of the tubular piezoelectric element (5). The piezoelectric element is situated in the inner cylindrical area of the sensor sleeve (3). A gap (12) with a gap thickness is formed between the inner cylindrical are of the sensor sleeve (3), defining an annular volume. The gap is filled with a noise transmitting liquid.
    Type: Application
    Filed: June 24, 2010
    Publication date: June 14, 2012
    Inventors: Truls Fallet, Per Schjølberg-Henriksen