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Figure shows the PS migration result, using
the updated P velocity model and the given
S velocity model.
Figure shows
three angle domain common image gathers for this migration
result.
psmiga
Figure 6 PS migration result with
the updated P velocity model and the given
S velocity model.
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psmigb
Figure 7 PS angle domain
common image gathers.
They corresponds, from left to right, to a lateral
position of 2000m, 4000m and 5400m. Observe the significant residual curvature.
Figure presents the residual migration results keeping
the value as 1, i.e, no changes in the P-velocity field, and
a value of 0.98. Figure shows the angle domain
common image gathers for the residual migration process. These
angle gathers are at the same position as in Figure ,
however, they correspond to values of
and .
pssrm
Figure 8 PS Stolt
residual migration result
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pssrm2
Figure 9 PS angle domain
common image gathers after Stolt residual migration for
converted waves. They are at the same location as in
Figure and corresponds to, from
left to right, , and .
The value used for the PS residual migration
is constant for the whole section, with a value of .The value was
chosen at a depth of 1900m, which is the estimated depth of the
Alba reservoir, and at the center of the section.
Next: Summary
Up: Real data results
Previous: PP results
Stanford Exploration Project
11/11/2002