Patents by Inventor James Wendell Wiggins

James Wendell Wiggins 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).

  • Method for computing finite-frequency seismic migration traveltimes from monochromatic wavefields
    Patent number: 6643590
    Abstract: A method for determination of seismic wave travel times from a surface location to at least one subsurface computation point (CP) within a plurality of subsurface location points. A velocity model of a region is defined. A complex monochromatic wavefield is computed, using the velocity model, for the at least one CP. An unwrapped phase of the seismic wave is determined at a neighboring computation point (NCP) proximate to at least one subsurface CP. The travel time of the seismic wave to the at least one CP is determined using the unwrapped NCP phase and the computed monochromatic wavefield for the at least one CP. Travel time maps and table may be created from the determined travel time values.
    Type: Grant
    Filed: January 4, 2002
    Date of Patent: November 4, 2003
    Assignee: WesternGeco, L.L.C.
    Inventor: James Wendell Wiggins
  • METHOD FOR COMPUTING FINITE-FREQUENCY SEISMIC MIGRATION TRAVELTIMES FROM MONOCHROMATIC WAVEFIELDS
    Publication number: 20030130796
    Abstract: A method for determination of seismic wave travel times from a surface location to at least one subsurface computation point (CP) within a plurality of subsurface location points. A velocity model of a region is defined. A complex monochromatic wavefield is computed, using the velocity model, for the at least one CP. An unwrapped phase of the seismic wave is determined at a neighboring computation point (NCP) proximate to at least one subsurface CP. The travel time of the seismic wave to the at least one CP is determined using the unwrapped NCP phase and the computed monochromatic wavefield for the at least one CP. Travel time maps and table may be created from the determined travel time values.
    Type: Application
    Filed: January 4, 2002
    Publication date: July 10, 2003
    Applicant: WesternGeco L.L.C.
    Inventor: James Wendell Wiggins