Patents by Inventor Robert J. Graebner

Robert J. Graebner 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).

  • Determining anisotropy in a stratum using scattered vertical and horizontal shear modes
    Patent number: 6625542
    Abstract: The present invention provides a system for, and method of determining anisotropy in a stratum using scattered horizontal shear and vertical shear modes. The method includes transforming seismic energy wave generated by a seismic energy source and received by seismic receivers into radial/transverse coordinate space, determining a seismic energy wave corridor along a radial path between the seismic energy source and the seismic receivers, and gathering seismic data received by the seismic receivers within the corridor wherein the data includes horizontal and vertical shear components.
    Type: Grant
    Filed: September 17, 2001
    Date of Patent: September 23, 2003
    Assignee: Board of Regents for the University of Texas System
    Inventors: Bob Hardage, Robert J. Graebner
  • Determining vertical fractures in a stratum using scattered vertical and horizontal shear modes
    Patent number: 6556921
    Abstract: The present invention provides a system for, and method of determining vertical fractures in a stratum using scattered horizontal shear and vertical shear modes. The method may include segregating first order horizontal and vertical shear modes of a seismic energy wave into second order horizontal and vertical shear modes, defining a seismic energy wave corridor along a radial path between a seismic energy source and seismic receivers, and gathering seismic data received by the seismic receivers within the corridor, the data including the second order horizontal and vertical shear modes.
    Type: Grant
    Filed: September 17, 2001
    Date of Patent: April 29, 2003
    Assignee: Board of Regents for the University of Texas System
    Inventors: Bob Hardage, Robert J. Graebner