Patents by Inventor Stefan Haberla

Stefan Haberla 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).

  • Patent number: 9671370
    Abstract: A method and system for detecting material loss in a tubular. A method includes identifying a radial cross-sectional area of a tubular as having a loss of material in a wall of the tubular. Responsive to the identifying, an amount of voltage offset present in each of a plurality of measurement signals is determined. Each of the measurement signals provides measurement information for an arc section of the wall. For each of the measurement signals, a zero adjusted signal is produced by adjusting the measurement signal to remove the amount of voltage offset over a length of the tubular for which the identifying recognizes the loss of material. An assessment of wall material loss is produced for each arc section of the wall of the tubular based on the zero adjusted signals. An image of the wall of the tubular showing the wall material loss for each arc section is generated.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: June 6, 2017
    Assignee: NATIONAL OILWELL VARCO, L.P.
    Inventors: Matthias Janssen, Stefan Haberla
  • Publication number: 20170108468
    Abstract: A method and system for detecting material loss in a tubular. A method includes identifying a radial cross-sectional area of a tubular as having a loss of material in a wall of the tubular. Responsive to the identifying, an amount of voltage offset present in each of a plurality of measurement signals is determined. Each of the measurement signals provides measurement information for an arc section of the wall. For each of the measurement signals, a zero adjusted signal is produced by adjusting the measurement signal to remove the amount of voltage offset over a length of the tubular for which the identifying recognizes the loss of material. An assessment of wall material loss is produced for each arc section of the wall of the tubular based on the zero adjusted signals. An image of the wall of the tubular showing the wall material loss for each arc section is generated.
    Type: Application
    Filed: October 14, 2015
    Publication date: April 20, 2017
    Applicant: NATIONAL OILWELL VARCO, L.P.
    Inventors: Matthias Janssen, Stefan Haberla