Abstract

Whenever the geological objectives are not met with the available processed data, the interpreters would like to get reprocessed the same data rather than to acquire data a fresh. Since the processing cost and time is much-much less than acquisition cost and time, it is prudent to get reprocessed of seismic data for improvement. A new lead and discovery at different/deeper level in a well provide new opportunity to the interpreter to re-look the data. Looking with another angle may require the re-processing of data with different objective. This is necessitated by the fact that advanced techniques aimed at enhancing the signal-to-noise ratio and frequency of the data available now might not have existed in the industry at that time which is seeing very rapid growth in the techniques in seismic data processing. Sometimes, the data is acquired in different campaigns and this usually results in apparent differences in the quality of the processed output. Integrated interpretation requirements necessitate the use of seismic data of similar quality and therefore the data may require reprocessing of whole data with uniform optimum processing parameters. Reprocessing of seismic data carried out using state-of-the-art processing techniques usually show an overall significant improvement in terms of reflection detail and frequency or in specific zones if the reprocessing effort is focused on specific targets