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Mueller K.W.,Abu Dhabi International Petroleum Exhibition and Conference | Al Nahhas M.S.,Abu Dhabi International Petroleum Exhibition and Conference | Soroka W.L.,Abu Dhabi International Petroleum Exhibition and Conference | Al Baloushi M.,Abu Dhabi International Petroleum Exhibition and Conference | And 4 more authors.
JPT, Journal of Petroleum Technology | Year: 2011

An azimuth-dependant-processing pilot study was undertaken in a large Middle East field to determine its potential in identifying fracture- permeability pathways. Azimuthal sectors were used for improved signal/noise ratio (SNR), but it was noted that narrower sectors could produce higher-resolution images, but with higher levels of background noise. Two methods were tested and used to generate the six azimuth-stack images so that a direct comparison between the two processing flows could be made. The first method, azimuth sectoring, involves sorting the prestack data into different source-to-receiver azimuth-orientation sectors, each of which is a range of similar azimuths combined into one azimuth-sector group for further processing. Another method, common-Cartesian-offset-bin (CCOB) relies on Fourier regularization, which involves binning data by use of the cross-line and in-line offset distribution to create the CCOB. Time differences were observed between events on the azimuth sectors. Source

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