Patents by Inventor Robin Fletcher

Robin Fletcher 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).

  • REGULATING COHERENT BOUNDARY REFLECTIONS DURING GENERATION OF A MODELED WAVEFIELD
    Publication number: 20110310699
    Abstract: A technique includes receiving data indicative of a wavefield in a processor-based system and processing the data on the processor-based system to generate a modeled wavefield. The processing includes varying boundary conditions of the modeled wavefield with respect to time to regulate coherent boundary reflections in the modeled wavefield.
    Type: Application
    Filed: June 17, 2010
    Publication date: December 22, 2011
    Inventors: Johan O. A. ROBERTSSON, Robin FLETCHER
  • USING A WAVE PROPAGATOR FOR TRANSVERSELY ISOTROPIC MEDIA
    Publication number: 20090213693
    Abstract: A technique includes modeling a seismic wavefield in a vertical transversely isotropic media as a second order derivative of a first wavefield function with respect to a vertical direction and not with respect to crossline and inline directions and as second order derivatives of a second wave field function with respect to the inline and crossline directions and not with respect to the vertical direction. The method includes processing seismic measurements of the media in accordance with the modeled seismic wavefield to obtain information about the media.
    Type: Application
    Filed: January 15, 2009
    Publication date: August 27, 2009
    Inventors: Xiang Du, Robin Fletcher
  • Creating an Absorption Parameter Model
    Patent number: 7555389
    Abstract: To generate an absorption parameter model, estimated values of an effective absorption parameter are received, where the estimated effective absorption parameter values represent absorption encountered by a seismic wave in a subterranean structure. Based on the estimated effective absorption parameter values, an absorption parameter model is generated that varies absorption parameter values along at least one dimension of the subterranean structure.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: June 30, 2009
    Assignee: WesternGeco L.L.C.
    Inventors: Maud Cavalca, Robin Fletcher, Alfonso Gonzalez
  • Creating an Absorption Parameter Model
    Publication number: 20080312838
    Abstract: To generate an absorption parameter model, estimated values of an effective absorption parameter are received, where the estimated effective absorption parameter values represent absorption encountered by a seismic wave in a subterranean structure. Based on the estimated effective absorption parameter values, an absorption parameter model is generated that varies absorption parameter values along at least one dimension of the subterranean structure.
    Type: Application
    Filed: June 15, 2007
    Publication date: December 18, 2008
    Inventors: Maud Cavalca, Robin Fletcher, Alfonso Gonzalez