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The processing sequence we propose features mainly data collected on land.
AVO analysis on land surveys was always considered problematic
because of irregular coverage and missing offsets.
However, after organization of land data as common azimuths,
land and marine processing
should have much in common and the processes we will describe
are applicable
in either environment.
The basic processing flow in Figure 1 outlines the major steps
for amplitude preserving-processing. It includes the important elements for
AVO analysis, that is, restoration of relative amplitudes,
preservation of amplitudes
during data reorganization and regularization, signal-to-noise
enhancement by coherent partial stacking, and correct positioning
of reflectors.
The latter three aspects will be discussed in this paper;
a good deal of care is required in the preprocessing stage to restore amplitudes
and to suppress the noise.
flow-usethis
Figure 1 Processing flow chart proposed for amplitude-preserving processing of wide-azimuth surveys.
Next: Algorithmic accuracy of imaging
Up: Chemingui & Biondi: Handling
Previous: Introduction
Stanford Exploration Project
11/12/1997
