Geological RIP

Geological RIP allows us to incorporate a geological idea of what the model should look like into the inversion problem. I have picked several reflectors in the migration result (Figure ) and used them to create a steering filter that is used to regularize the model along with the geophysical regularization.

 

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Figure 12 Migration result overlaid by the reflectors picked for geological regularization.

The result of 6 iterations of geological RIP using the reflectors from Figure  can be seen in Figure . Once again, the migration result is displayed on top and the inversion result is displayed on the bottom. It can also be compared to the geophysical RIP result in Figure , which shows the same common ray parameter section and common image gather. The geological RIP result has even fewer artifacts than the geophysical RIP result and shows more reflector continuity in the shadow zones. However, the faults are less defined in the geological RIP result.

 

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Figure 13 Top: result of downward-continuation migration of 2-D line. Left part is a common offset ray parameter section at 74#74,right part is a common image gather from 75#75. Bottom: result of 6 iterations of geological RIP. This result can also be compared to the geophysical RIP result in Figure .