The SEG AA' data set was originally a test 2D data set shot over a selected line from the full SEG/EAGE model. It has been said (personal communication from Sam Gray) that almost any algorithm can be made to image this data set reasonably well. Here, we simply compare a one-way split step method to a more accurate full two-way method.
Figure 8(a) is the original SEG AA' velocity model. Figure 8(b) is an image of the prestack data originally shot over this model at AMOCO production before it became part of BP. Part (b) is a two-way image of this data, and is clearly better than the one-way result.
(a)
The
SEG
AA'
velocity
model
(b)
One-way
image
of
the
AA'
data
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