f Seismic processing with consistant modules

Digital processing of seismic data had its commercial beginring in early 1960's. Processing steps were gradually developed to inciude more sophisticated and computationally more expensive processes as computer capabilities were expanded. Reviewing the last two decades of processing steps we have seen that while some new processes were added to the stream, most of the processes were kept the same. In fact there were a number of processes which were left over from analog days. They are still in use in the field and as part of the processing sequence. Since the laws of evolution dictates that everything must change with time, we expect to have some evolutionary if not revolutionary changes in the seismic exploration technology. In order to have an overall realistic view of the processing sequence, we have to start from the objectives and work al/ the way back to the field data specifications.