Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Earth science
Reexamination Certificate
2005-01-11
2005-01-11
Barlow, John (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Earth science
C703S005000
Reexamination Certificate
active
06842701
ABSTRACT:
The present invention is a method for processing seismic data comprising acquiring seismic data using a sweep sequence including a plurality of cascaded sweep segments. The seismic data include a plurality of data segments and a listen time. The listen is combined with an initial data segment. The seismic data segments are phase shifted to a phase of a target data segment to be denoised (i.e. removal of ambient, harmonic and coherent noise). A difference between the target data segment and the remaining data segments is determined. If the determined difference exceeds a predetermined threshold, data in the target data segment is replaced with data derived from the remaining data segments. The data segments may be stacked to form a new target data segment. The listen time is extracted from the initial data segment.
REFERENCES:
patent: 4042910 (1977-08-01), Rietsch
patent: 4561075 (1985-12-01), Smith et al.
patent: 4635239 (1987-01-01), Neff
patent: 4715020 (1987-12-01), Landrum, Jr.
patent: 4823326 (1989-04-01), Ward
patent: 4882713 (1989-11-01), Hughes
patent: 4982374 (1991-01-01), Edington et al.
patent: 5410517 (1995-04-01), Andersen
patent: 6418079 (2002-07-01), Fleure
patent: 6519533 (2003-02-01), Jeffryes
patent: 2289336 (1995-11-01), None
Xiao-Ping Li et al.;Elimination of harmonic distortion in vibroseis data,Geophysics, vol. 60, No. 2 (Mar.-Apr. 1995); pp. 503-516, 12 Figures.
Joseph K. Schrodt et al.;Techniques for improving Vibroseis data,Geophysics, vol. 52, Apr. 1987, No. 4, pp. 469-482, 17 Figures.
G.J.M. Baeten, et al.;Acquisition and processing of point source measurements in land seismic,SEG. 2000 Expanded Abstracts, 70th Annual International Mtg., pp. 45-48.
Roger M. Ward et al.;Phase Encoding of Vibroseis Signals for Simultaneous Multisource Acquisition,SA 4.3, SEG 1990, 60th Annual International Mtg., pp. 938-941.
J.E. Martin et al.,Behavior of a Seismic Vibrator Using Different Phase Control Methods and Drive Levels,SA 3.4, SEG 1989, 59th Annual International Mtg., pp. 672-675.
J.E. Martin;Simultaneous Vibroseis Recording,Geophyical Prospecting 41, 1993, pp. 943-967.
Barr Frederick J.
Moerig Rainer
Barlow John
Madan Mossman & Sriram P.C.
Taylor Victor J.
WesternGeco L.L.C.
LandOfFree
Method of noise removal for cascaded sweep data does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of noise removal for cascaded sweep data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of noise removal for cascaded sweep data will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3393251