Patents by Inventor Tage Røsten

Tage Røsten 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).

  • Electromagnetic wavefield analysis
    Patent number: 7664603
    Abstract: A method of analyzing an electromagnetic wavefield includes the steps of measuring the electric and magnetic fields at at least one receiver, formulating a respective spatial domain filter in respect of each of mutually orthogonal components of each of the electric and magnetic fields, and applying the filters to the measured acquired data to decompose the wavefield into upgoing and downgoing components.
    Type: Grant
    Filed: April 1, 2005
    Date of Patent: February 16, 2010
    Assignee: Statoil ASA
    Inventors: Tage Røsten, Lasse Amundsen
  • Method and apparatus for deriving a calibration filter for electromagnetic data
    Patent number: 7613570
    Abstract: A method of deriving a calibration filter for electromagnetic data is provided. The method comprises providing a source (21, 22) of electromagnetic radiation and subsequently measuring components of the source electromagnetic field (23, 24, 25) at a receiver when the source is sufficiently close to the receiver that the down-going signal dominates over the up-going signal reflected from features below the receiver. Such a measurement can be used in frequency domain analysis (26, 28, 29) to extract the down-going signal component and derive a calibration filter for the receiver. The method is repeated (27, 30) for each receiver used in an electromagnetic sounding survey.
    Type: Grant
    Filed: April 1, 2005
    Date of Patent: November 3, 2009
    Assignee: Statoil ASA
    Inventors: Tage Røsten, Lasse Amundsen