Depth migration method using Gaussian beams

Details Depth migration method using Gaussian beams Depth migration method using Gaussian beams

1992-06-26

1993-12-28

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

367 50, G01V 136

Patent

active

052746054

ABSTRACT:
A process for depth migration of seismic wave information that has been derived from geological media that causes rapid lateral velocity variations in seismic waves. The process includes the step of decomposing wavefields recorded at the earth's surface using Gaussian beams as basic functions. Then, according to the process, the set of Gaussian beams is extrapolated downward into the earth to obtain the subsurface wavefield. Finally, the wavefield is processed to provide depth-migrated images of subsurface reflectors.

REFERENCES:
patent: 4980866 (1990-12-01), Wang et al.
"Computation of Wavefields in Inhomogeneous Media-Gaussian Beam Approach," Cerveny et al., Geophysical Journal of the Royal Society, vol. 70, 1982, pp. 109-128.
"Gaussian Beam Migration", N. Ross Hill, Geophysics vol. 55, No. 11, (Nov. 1990), pp. 1416-1428.
"Radon Transform/Gaussian Beam Migration," Lazaratos et al., Oct. 1990, Expanded Abstracts for the 60th Annual Meeting of the Society of Exploration Geophysicists, pp. 1314-1317.
"Gaussian Beam Migration," da Costa et al., Oct. 1989, Expanded Astracts for the 59th Annual Meeting of the Society of Exploration Geophysicists, pp. 1169-1171.
"Efficient 2d and 3d Shot Record Redatuming," Kinneging et al., Geophysical Prospectign 37, 1989, pp. 493-530.
"Inverse Extrapolation of Primary Seismic Waves," Wapenaar et al., Geophysics, vol. 54, No. 7, (Jul. 1989), pp. 853-863.

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