Method for migrating seismic data

Details Method for migrating seismic data Method for migrating seismic data

1994-10-17

1996-06-25

Moskowitz, Nelson

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

367 51, 364421, G01V 136, G01V 128

Patent

active

055306799

ABSTRACT:
An approximate method for imaging seismic data that originates from steeply dipping or overturned strata. The method provides a viable alternate approach to the generalized f-k migration that does not rely explicitly on some form of perturbation series expansion and thus avoids the steep-dip instability that is present in previously-known methods. This method is particularly useful in the presence of a moderate lateral velocity gradient, something that prior-art methods have trouble accommodating. An advantageous feature of the disclosed method is that the migration/imaging operators are composed of simple numerical coefficients.

REFERENCES:
patent: 4464737 (1984-08-01), Pann
patent: 4943950 (1990-07-01), Beasley et al.
patent: 4964088 (1990-10-01), Chittieni
patent: 5274605 (1993-12-01), Hill
Hill, N. Ross, Gaussian Beam Migration, Geophysics, vol. 55, No. 11 (Nov. 1990), pp. 1416-1428.
Kosloff, Dan D., Baysalt, Edip, Migration with the Full Accoustic Wave Equation, Geophysics, vol. 48, No. 6 (Jun. 1983), pp. 677-687.
Pai, David M., Generalized f-k (frequency-wavenumber) Migration in Arbitrarily Varying Media, Geophysics, vol. 53, No. 12 (Dec. 1988), pp. 1547-1555.

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