Abstract
Recent d iscoveries in pre-salt areas of Brazil’s Santos Basin have stimulated momentum for producing higher resolution images of the region’s geologically complex structures. Variable-depth streamer acquisi tion is an emerging technology that can improve the usable bandwidth in both the lowand high-frequency ranges, reduce sea-sta te-related noise, and improve low frequency penetration in to the deep pre-salt targets. Addi tionally, we examine its advantages for producing higher-resolution veloci ty models. We use two real field data sets, one acquired wi th fla t and one wi th variable-depth streamers, to demonstrate the improvements to presalt imaging in the region with variable-depth streamer data.
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