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Demultiple

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Author Topic: Avoid removing primary from the data with steep dip using RADON demultiple . 1629 Views

Avoid removing primary from the data with steep dip using RADON demultiple . Link to this post

Hi guys when I am running RADON demultiple on data which contains salt and steep dips I am removing considerable primary energy from the salt boundary is there a way to avoid it , the primary energy loss is only at salt boundary and not for and flat geology.

Re: Avoid removing primary from the data with steep dip using RADON demultiple . Link to this post

With salt present in the structure you are looking at it is always going to be difficult to define a good velocity model. Which in turn is going to make RADON demultiple tricky.
If RADON is being applied pre-migration then this should be very conservative - only looking to remove obvious multiples and keep anything that might be ambiguous.
If RADON is being applied post-migration you could try being a little more aggressive with what you remove, but will still need to be careful.
If near-offset primary data is being lost you could try using the HARLAN signal extraction filter option in the RADON module. Essentially this provides a high-resolution Radon transform.

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