Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Land-reflection type
Reexamination Certificate
2009-05-26
2011-10-25
Lobo, Ian (Department: 3662)
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Land-reflection type
C367S053000, C702S014000
Reexamination Certificate
active
08045417
ABSTRACT:
A system and method for locating subsurface diffractors. The method operates on two-dimensional (2-D) seismic data that includes one or more 2-D seismic lines. The 2-D seismic data may be preprocessed to enhance diffracted energy. For each hypothetical diffractor location in a set of hypothetical diffractor locations, the method involves analyzing at least a subset of the seismic traces of the one or more 2-D seismic lines, in order to compute a value indicating an extent to which those seismic traces contain diffraction arrivals consistent with the hypothetical diffractor location. The method may further involve generating, storing and displaying an image (or map) based on the computed values. The image may illustrate areas of high, intermediate and low diffraction, and may be used to assess the formation.
REFERENCES:
patent: 4866659 (1989-09-01), Lin et al.
patent: 5260911 (1993-11-01), Mason et al.
patent: 5394151 (1995-02-01), Knaell et al.
patent: 6049507 (2000-04-01), Allen
patent: 6088295 (2000-07-01), Altes
patent: 6151556 (2000-11-01), Allen
patent: 6490528 (2002-12-01), Cheng et al.
patent: 6553315 (2003-04-01), Kerekes et al.
patent: 6584409 (2003-06-01), Wisecup
patent: 6865489 (2005-03-01), Jing
patent: 7085195 (2006-08-01), Taner et al.
patent: 7376539 (2008-05-01), Lecomte
patent: 7739051 (2010-06-01), Gulunay
patent: 2006/0015259 (2006-01-01), Gulunay
patent: 9115783 (1991-10-01), None
F. Steve Schilt, Sidney Kaufman, and George H. Long; “A Three-Dimensional Study of Seismic Diffraction Patterns from Deep Basement Structure”; Geophysics; Dec. 1981; pp. 1673-1683; vol. 46, No. 12.
T.J. Moser, E. Landa, and S.A. Petersen; “Velocity model based diffraction filtering”; SEG Extended Abstracts; 1999; 4 pages.
William S. Harlan, Jon F. Claerbout, and Fabio Rocca; “Signal
oise separation and velocity estimation” Geophysics; Nov. 1984; pp. 1869-1880; vol. 49, No. 11.
V. Khaidukov, E. Landa, and T.J. Moser; Diffraction imaging by a focusing-defocusing approach; by Khaidukov, Landa, and Moser, in SEG Extended Abstracts, 2003.
Cohen, et al.; “Local discontinuity measures for 3-D seismic data”; Geophysics Journal; vol. 67, No. 6; Nov.-Dec. 2002; pp. 1933-1945.
International Search Report and Written Opinion for application No. PCT/US2008/053808, mailed Nov. 27, 2008.
Milkereit et al. Multiattribute Processing of Seismic Data: Application to Dip Displays. Canadian Journal of Exploration Geophysics. vol. 26. Nos. 1&2. Dec. 1990. pgs. 47-53.
Keggin et al. Attenuation of multiple diffractions by multi-azimuth streamer acquisition. EAGE 64th Conference & Exhibition. Florence, Italy. May 27-30, 2002.
Rastogi et al. Optimal aperture width selection and parallel implementation of Kirchoff Migration Algorithm. SPG 4th Conference & Exposition on Petroleum Geophysics. Mumbai, India. Jan. 7-9, 2002.
Brightwell Mark K.
Hood Jeffrey C.
Landmark Graphics Corporation
Lobo Ian
Meyertons Hood Kivlin Kowert & Goetzel P.C.
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