Method for datumizing seismic data by forward modeling

Details Method for datumizing seismic data by forward modeling Method for datumizing seismic data by forward modeling

1993-07-01

1996-03-26

Moskowitz, Nelson

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

367 36, 364421, G01V 136

Patent

active

055026877

ABSTRACT:
Disclosed is a method for processing geophysical data that have been gathered over irregular topography. According to the method, a datum is established that lies above the highest topographic peak. The data are time-shifted from the surface to the datum using a replacement velocity that is an extrapolation of the underlying formation velocity. The wavefields beneath the surface are forwardly modeled using a modeling velocity substantially equal to zero. Between the surface and the datum, the wavefields are upwardly modeled using the replacement velocity.

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