Patents by Inventor Raymond Andrew ERGAS

Raymond Andrew ERGAS 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 of estimating anisotropy properties of geological formations using a self-adjoint pseudoacoustic wave propagator
    Patent number: 10215869
    Abstract: A method is described that includes receiving one or more seismic measurements corresponding to a plurality of source and receiver locations and providing an earth model for a geologic medium having a heterogeneous tilted symmetry axis. The earth model includes a nonzero shear velocity in the direction of the symmetry axis. The one or more seismic measurements are propagated over a plurality of time-steps in accordance with the earth model and a set of energy-conservative self-adjoint pseudoacoustic equations. The set of energy-conservative self-adjoint pseudoacoustic equations describes one or more seismic wavefields.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: February 26, 2019
    Assignee: CHEVRON U.S.A. INC.
    Inventors: John Kenneth Washbourne, Kenneth Paul Bube, Raymond Andrew Ergas, Tamas Nemeth
  • SYSTEM AND METHOD OF ESTIMATING ANISOTROPY PROPERTIES OF GEOLOGICAL FORMATIONS USING A SELF-ADJOINT PSEUDOACOUSTIC WAVE PROPAGATOR
    Publication number: 20160291180
    Abstract: A method is described that includes receiving one or more seismic measurements corresponding to a plurality of source and receiver locations and providing an earth model for a geologic medium having a heterogeneous tilted symmetry axis. The earth model includes a nonzero shear velocity in the direction of the symmetry axis. The one or more seismic measurements are propagated over a plurality of time-steps in accordance with the earth model and a set of energy-conservative self-adjoint pseudoacoustic equations. The set of energy-conservative self-adjoint pseudoacoustic equations describes one or more seismic wavefields.
    Type: Application
    Filed: March 30, 2016
    Publication date: October 6, 2016
    Inventors: John Kenneth WASHBOURNE, Kenneth Paul BUBE, Raymond Andrew ERGAS, Tamas NEMETH