Patents by Inventor Madjid Berraki

Madjid Berraki 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).

  • System and Method for Reducing the Effects of Ghosts From the Air-Water Interface in Marine Seismic Exploration
    Publication number: 20120092955
    Abstract: A system mechanically alters the geometry of the surface of the water by breaking the water surface with a mechanical device. The mechanical device may comprise a plurality of propellers, a plurality of aquafoils in the shape of plows, a wire whip, or other mechanical device to reduce the coefficient of reflectivity of the air-water interface.
    Type: Application
    Filed: December 22, 2011
    Publication date: April 19, 2012
    Applicant: SERCEL INC.
    Inventors: Roy Malcolm Lansley, Madjid Berraki, Jean-Charles Ferran
  • System and method for reducing the effects of ghosts from the air-water interface in marine seismic exploration
    Patent number: 8085617
    Abstract: A system mechanically alters the geometry of the surface of the water by breaking the water surface with a mechanical device. The mechanical device may comprise a plurality of propellers, a plurality of aquafoils in the shape of plows, a wire whip, or other mechanical device to reduce the coefficient of reflectivity of the air-water interface.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: December 27, 2011
    Assignee: Sercel Inc.
    Inventors: Roy Malcolm Lansley, Madjid Berraki, Jean-Charles Ferran
  • SEISMIC ARRAY WITH SPACED SOURCES HAVING VARIABLE PRESSURE
    Publication number: 20110299360
    Abstract: An over/under seismic source system includes a first umbilical to a first gun array at a first depth and a second umbilical at a different air pressure to a second gun array at a second, lower depth. The air pressure to the second, lower gun array is tuned so that the periods of the gun bubbles from the higher and lower gun arrays match in order to improve wavefield separation in subsequent data processing.
    Type: Application
    Filed: September 21, 2007
    Publication date: December 8, 2011
    Inventors: Roy Malcolm Lansley, Madjid Berraki, Michel Marc Maurice Gros
  • System and Method for Reducing the Effects of Ghosts From the Air-Water Interface in Marine Seismic Exploration
    Publication number: 20100110829
    Abstract: A system mechanically alters the geometry of the surface of the water by breaking the water surface with a mechanical device. The mechanical device may comprise a plurality of propellers, a plurality of aquafoils in the shape of plows, a wire whip, or other mechanical device to reduce the coefficient of reflectivity of the air-water interface.
    Type: Application
    Filed: October 31, 2008
    Publication date: May 6, 2010
    Inventors: Roy Malcolm Lansley, Madjid Berraki, Jean-Charles Ferran