Patents by Inventor Walter F. Söllner

Walter F. Söllner 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: 10436926
    Abstract: Marine survey data resulting from a first signal comprising a signal representing a flat spectral far-field pressure generated by a marine vibrator source swept over a frequency range according to a time function of motion such that acceleration of the marine vibrator source is a flat function in a frequency domain can be used to improve full waveform inversion. For example, full waveform inversion can be performed using the marine survey data received from the first signal and from a second signal generated by an impulsive seismic source to estimate a physical property of a subsurface location.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: October 8, 2019
    Assignee: PGS Geophysical AS
    Inventors: Walter F. Söllner, Okwudili Orji
  • Publication number: 20190187315
    Abstract: Survey design for data acquisition using marine non-impulsive sources can include operating a first marine non-impulsive source at over a first frequency range for a first sweep length and operating a second marine non-impulsive source over a second frequency range for a second sweep length. The first sweep length can be based on available geological information of a subsurface location that is a target of a marine seismic survey, an intended speed of a marine survey vessel, and the first frequency range. The second sweep length can be based on the available geological information, the intended speed, and the second frequency range.
    Type: Application
    Filed: December 18, 2018
    Publication date: June 20, 2019
    Applicant: PGS Geophysical AS
    Inventors: Okwudili Orji, Walter F. Söllner
  • Publication number: 20190113644
    Abstract: Marine seismic use of a harmonic distorted signal can include calculating a source wavefield based on nearfield measurements of a direct arrival signal from a marine vibrator source including harmonic distortion, calculating a receiver wavefield based on far-field measurements of a signal from the marine vibrator source after reflection from a subsurface location, and performing a multidimensional deconvolution of a source ghost effect, a source signature effect, and the harmonic distortion from the calculated receiver wavefield to determine a reflectivity of the subsurface location with the harmonic distortion suppressed.
    Type: Application
    Filed: October 15, 2018
    Publication date: April 18, 2019
    Applicant: PGS Geophysical AS
    Inventors: Walter F. Söllner, Okwudili Orji
  • Publication number: 20180321410
    Abstract: Determining a far field signature of a source array can include receiving data associated with a sea surface state and determining a coherent portion and an incoherent portion of a reflection coefficient of the sea surface based on the received data. A notional source signature of each source of the source array can be determined based on the coherent portion, the incoherent portion, and near field data associated with each of the sources, and the far field signature of the source array can be determined based on the notional source signatures of each of the sources. The notional source signature and the far field signature can be stored.
    Type: Application
    Filed: April 23, 2018
    Publication date: November 8, 2018
    Applicant: PGS Geophysical AS
    Inventors: Okwudili Orji, Endrias Asgedom, Daniel Martin Lewis Barker, Walter F. Söllner
  • Publication number: 20180239039
    Abstract: Parameters of a sweep signal that controls operation of a marine non-impulsive source can be set. Setting the parameters can include selecting a stop frequency of the sweep signal, defining a taper of the sweep signal, and adjusting an initial phase of the sweep signal. The parameters can be set such that a magnitude of an amplitude spectrum of a combined output of a marine impulsive source and the marine non-impulsive source is greater than or equal to a magnitude of an amplitude spectrum of a marine impulsive source output at frequencies below the stop frequency. A controller of the marine non-impulsive source can be programmed with the sweep signal having the parameters set to control the marine non-impulsive source.
    Type: Application
    Filed: January 23, 2018
    Publication date: August 23, 2018
    Applicant: PGS Geophysical AS
    Inventors: Okwudili Orji, Walter F. Söllner
  • Publication number: 20180164460
    Abstract: Disclosed are directed to dipole-type sources and associated methods and systems. A dipole-type source may comprise a first bender plate and a second bender plate. The dipole-type source may further comprise a first cavity coupled to the first bender plate and a second cavity coupled to the second bender plate. The dipole-type source may further comprise one or more drivers in fluid communication with the first cavity and/or the second cavity, wherein the one or more drivers are operable to drive a respective fluid between at least one of the one or more drivers and the first cavity and between at least one of the one or more drivers and the second cavity, such that the first and second bender plate oscillate at least substantially synchronously in the same direction to generate an up-going wave and a down-going wave with opposite polarity.
    Type: Application
    Filed: November 17, 2017
    Publication date: June 14, 2018
    Applicant: PGS Geophysical AS
    Inventor: Walter F. Söllner
  • Publication number: 20180052245
    Abstract: Marine survey data resulting from a first signal comprising a signal representing a flat spectral far-field pressure generated by a marine vibrator source swept over a frequency range according to a time function of motion such that acceleration of the marine vibrator source is a flat function in a frequency domain can be used to improve full waveform inversion. For example, full waveform inversion can be performed using the marine survey data received from the first signal and from a second signal generated by an impulsive seismic source to estimate a physical property of a subsurface location.
    Type: Application
    Filed: June 12, 2017
    Publication date: February 22, 2018
    Applicant: PGS Geophysical AS
    Inventors: Walter F. Söllner, Okwudili Orji