Patents by Inventor Endrias Getashew Asgedom

Endrias Getashew Asgedom 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).

  • Methods and systems to separate wavefields using pressure wavefield data
    Patent number: 9791580
    Abstract: This disclosure is directed to wavefield separation methods and systems. In one aspect, methods and systems compute an approximate vertical particle velocity wavefield based on a measured pressure wavefield and knowledge of free-surface when the pressure wavefield was measured. The measured pressure wavefield is used to compute an approximate frozen free-surface profile. The approximate frozen free-surface profile and the measured pressure wavefield are used to compute an approximate vertical particle velocity wavefield. The approximate vertical particle velocity wavefield and measured pressure wavefield may be used to compute separate up-going and down-going pressure, or vertical particle velocity, wavefields.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: October 17, 2017
    Assignee: PGS Geophysical AS
    Inventors: Endrias Getashew Asgedom, Okwudili Orji, Walter Söllner
  • METHODS AND SYSTEMS TO SEPARATE WAVEFIELDS USING PRESSURE WAVEFIELD DATA
    Publication number: 20150301210
    Abstract: This disclosure is directed to wavefield separation methods and systems. In one aspect, methods and systems compute an approximate vertical particle velocity wavefield based on a measured pressure wavefield and knowledge of free-surface when the pressure wavefield was measured. The measured pressure wavefield is used to compute an approximate frozen free-surface profile. The approximate frozen free-surface profile and the measured pressure wavefield are used to compute an approximate vertical particle velocity wavefield. The approximate vertical particle velocity wavefield and measured pressure wavefield may be used to compute separate up-going and down-going pressure, or vertical particle velocity, wavefields.
    Type: Application
    Filed: October 23, 2014
    Publication date: October 22, 2015
    Applicant: PGS Geophysical AS
    Inventors: Endrias Getashew Asgedom, Okwudili Orji, Walter Söllner