Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Land-reflection type
Reexamination Certificate
2007-01-03
2008-12-02
Keith, Jack W (Department: 3663)
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Land-reflection type
C367S050000, C367S051000, C367S057000
Reexamination Certificate
active
07460437
ABSTRACT:
A method and system for seismic data processing utilizes azimuthal variations in the velocity of seismic signals. The system and method utilizes a plurality of seismic energy sources that are located at known positions at the surface of the earth. The seismic energy sources generate seismic signals that propagate downward into the earth. Some of the seismic signals are reflected and diffracted by various sub-surface layers and are returned to the surface of the earth. The returned seismic signals are received by a plurality of receivers. The method includes the step of determining the distance from an energy source to an image point. A fast travel time of the seismic signal from the energy source to the image point is determined, and a slow travel time of the seismic signal from the energy source to the image point is determined. The azimuth angle between the energy source and the surface location of the image point is calculated. A first travel time of the seismic signal traveling from the energy source to the image point is calculated. A second travel time of the seismic signal traveling from the image point to the seismic receiver is calculated. The total travel time is calculated by adding the first and second travel time. The amplitudes from the recorded signal at the total travel time are phase adjusted and added into the output image at the image point. The foregoing steps are repeated for a plurality of image points beneath the surface of the earth and the total travel time is calculated.
REFERENCES:
patent: 5012674 (1991-05-01), Millheim et al.
patent: 5109697 (1992-05-01), Millheim et al.
patent: 6611761 (2003-08-01), Sinha et al.
patent: 6681184 (2004-01-01), Jenner et al.
patent: 6714480 (2004-03-01), Sinha et al.
patent: 6714873 (2004-03-01), Bakulin et al.
patent: 6898147 (2005-05-01), Jenner et al.
patent: 6904368 (2005-06-01), Reshef et al.
patent: 6930616 (2005-08-01), Tang et al.
patent: 2002/0116128 (2002-08-01), Sinha et al.
patent: 2003/0167835 (2003-09-01), Sinha et al.
patent: 2004/0109387 (2004-06-01), Jenner et al.
patent: 2004/0257911 (2004-12-01), Tang et al.
patent: 2006/0256655 (2006-11-01), Sinha et al.
patent: 2006/0285437 (2006-12-01), Sinha et al.
Castonguya et al. Application of reprocessed vintage seismic reflection lines for an improved subsurface imagery ofhte Laurentian margin architecture; souterhn Quebec Appalachians. Geological Society of America. Northeastern section. 37th Annual meeting. Mar. 25-27, 2002.
Combellas et al. Sequence Stratigraphic Analysis of a Semiregional Depth Migrated Profile, Maturin Sub-Basin, Eastern Venezuela Basin. 68th Annu. Seg. Int. Mtg. New Orleans Sep. 13-18, 1998.
McLain William “Bill” H.
Nelan Stuart
Sicking Charles
Hughes Scott A
Keith Jack W
Rahman Michael A.
Weinman GeoScience
LandOfFree
Seismic data processing method and system for migration of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Seismic data processing method and system for migration of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Seismic data processing method and system for migration of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4029209