Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Land-reflection type
Reexamination Certificate
2005-09-27
2005-09-27
Gregory, Bernarr E. (Department: 3663)
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Land-reflection type
C702S017000
Reexamination Certificate
active
06950371
ABSTRACT:
A method for enhancing signal-to-noise (S/N) ratio of seismic data is presented. An ensemble of input traces is decomposed into a plurality of frequency bands of traces. Trace and signal power and then a maximum allowable signal-to-noise ratio are estimated for each frequency band. Weights are calculated which are functions of the inverse noise power or rms. The amplitudes in each of the traces are reformed using a fitting function which utilizes the estimated weights to create true relative amplitude signal enhanced traces. The weighting function has data adaptive parameters which can be changed to accommodate noise characteristics such coherency, incoherency, Gaussian and non-Gaussian distributions, etc. The method may be applied across many different coordinate systems. The method may be applied iteratively to seismic data to shape the noise distribution of the seismic data.
REFERENCES:
patent: 3398396 (1968-08-01), Embree
patent: 3622967 (1971-11-01), Foster et al.
patent: 4468761 (1984-08-01), Rietsch
patent: 4561074 (1985-12-01), Warmack
patent: 4561075 (1985-12-01), Smith et al.
patent: 4740929 (1988-04-01), Ehlers et al.
patent: 4882713 (1989-11-01), Hughes
patent: 5138583 (1992-08-01), Wason et al.
patent: 5197039 (1993-03-01), Corcoran et al.
patent: 5719822 (1998-02-01), Wang
patent: 5825716 (1998-10-01), Starr
patent: 5986973 (1999-11-01), Jeri ević et al.
patent: 6446008 (2002-09-01), Ozbek
patent: 6463388 (2002-10-01), Martinez
patent: 6519205 (2003-02-01), Baeten et al.
patent: 6519533 (2003-02-01), Jeffryes
patent: 6574567 (2003-06-01), Martinez
patent: 6636809 (2003-10-01), Herrmann
patent: 6651007 (2003-11-01), Ozbek
patent: 6691039 (2004-02-01), Wood
Bones Dennis G.
Herkenhoff E. Fredrick
Louie Kendall Bong Hu
Chevron U.S.A. Inc.
Gregory Bernarr E.
Hughes Scott
Schulte Richard J.
LandOfFree
Method for signal-to-noise ratio enhancement of seismic 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 for signal-to-noise ratio enhancement of seismic data..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for signal-to-noise ratio enhancement of seismic data... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3447907