Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Land-reflection type
Patent
1998-06-09
1999-11-23
Oda, Christine K.
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Land-reflection type
367 24, 367 62, 367 22, 367 46, 702101, 702173, G01V 138
Patent
active
059912383
ABSTRACT:
A method for attenuating water column reverberations in a dual sensor seismic signal, whereby a pressure signal and a velocity signal are transformed from the time domain to the frequency domain, generating a transformed pressure signal and a transformed velocity signal, respectively. Values for weighting factors K.sub.p and K.sub.v are selected and multiplied times the transformed pressure signal and the transformed velocity signal, respectively, generating a weighted pressure signal and a weighted velocity signal, respectively. The weighted pressure signal and the weighted velocity signal are summed, generating a summed signal. Values for ocean bottom reflectivity R and Z, the frequency domain delay operator for two-way travel time in the water layer, are determined. A weighted inverse Backus filter is calculated and multiplied times the summed signal, generating a filtered signal. The filtered signal is transformed from the frequency domain to the time domain.
REFERENCES:
patent: 4979150 (1990-12-01), Barr
patent: 5396472 (1995-03-01), Paffenholz
patent: 5621700 (1997-04-01), Moldovean
patent: 5774416 (1998-06-01), Sadek et al.
patent: 5774417 (1998-06-01), Corrigan et al.
Jolly Anthony
Oda Christine K.
Riddle J. Albert
Schweppe Charles R.
Western Atlas International Inc.
LandOfFree
Weighted backus filter method of combining dual sensor traces does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Weighted backus filter method of combining dual sensor traces, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Weighted backus filter method of combining dual sensor traces will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1229960