Seismic loop is an interactive procedure designed for processing data in a gather by gather mode, for instance noise attenuation procedures. Processing is performed on the seismic data based on the specified sort order output from the sort traces module which must precede this module in the workflow. Seismic loop is a standalone procedure, i.e. all calculations are performed on the single node (multi-thread). If we need to execute processing on the coalition server, means to use many nodes in parallel mode, so we should use Seismic distributed loop:

We should read seismic data set with traces headers from the DB, then make a particular sorting of traces headers (ex: common source, CMP, ...) and do some processing inside the loop trace by trace (band-pass, FK-filter, Radon, ...). Finally, save resulting traces into DB via save seismic module:

Seismic loop workflow example:

Seismic distribution loop workflow example:

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