Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Earth science
Patent
1999-06-18
2000-11-21
McElheny, Jr., Donald E.
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Earth science
367 23, G01V 128
Patent
active
061515566
ABSTRACT:
A seismic system is provided with a method of reducing distortions caused by motion of a source and receiver in marine seismic measurements. In one embodiment, the seismic system comprises a seismic source, a seismic receiver, a source/receiver interface unit, a processing unit, a data storage unit, a display device, and a user input device. The processing unit is configured to receive seismic measurements from the seismic receiver and to create a seismic velocity model from the received data. The processing unit uses the velocity model to calculate a dilation function that is indicative of distortion caused by motion of the seismic source. Preferably, the processing unit corrects the seismic measurements for this distortion by computing a transform of the seismic measurements, partitioning the transformed measurements into "dip slices", inverse transforming the individual dip slices, correcting the dip slice measurements according to the dilation function, and adding the corrected dip slice measurements together to obtain the corrected seismic measurements. The disclosed system and method can advantageously provide for more accurate correction for source motion, which in turn yields seismic data having substantially reduced "smear" when ensemble averaging is performed to reduce seismic noise.
REFERENCES:
patent: 4159463 (1979-06-01), Silverman
patent: 4380059 (1983-04-01), Ruehle
patent: 4809235 (1989-02-01), Dragoset, Jr.
patent: 5134590 (1992-07-01), Garotta
patent: 5325436 (1994-06-01), Soli et al.
Exploration Seismology, R. E. Sheriff and L. P. Geldart, 1995, 11 pages, Australia.
Simple Theory For Correction Of Marine Vibroseis Phase Dispersion, P.S. Schultz et al., pp. 660-662, U.S.A.
Marine Vibrators And The Doppler Effect, W. H. Dragoset, pp. 1388-1398, Nov. 1988, Houston, Texas.
The Effects Of Source And Receiver Motion On Seismic Data, G. Hampson et al., Geophysical Prospecting, vol. 43, 1995, pp. 221-224.
McElheny Jr. Donald E.
Mobil Oil Corporation
LandOfFree
Method and apparatus for doppler smear correction in marine seis 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 and apparatus for doppler smear correction in marine seis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for doppler smear correction in marine seis will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1266376