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The AAPG/Datapages Combined Publications Database
GCAGS Transactions
Abstract
Seeing through the Salt
Abstract
One of the industry’s greatest current challenges is the ability to image subsalt reservoirs and thus pinpoint the deepwater oil and gas deposits of tomorrow. Since 2005, several wide azimuth surveys have been acquired to improve the illumination of subsalt prospects in various regions of the world such as the Gulf of Mexico, Brazil, West Africa, and the Red Sea. The processing results of these surveys have clearly shown that wide azimuth data does provide a step change improvement in subsalt imaging.
Despite the significant progress in recent years, there remain many challenging areas for earth model building and imaging in the most complex geological environments. Increased complexity in the imaging challenges has driven a change from traditional ray-based methods to waveform methods for model building and imaging. These new imaging technologies work best with data that is enriched with low frequencies, long offsets and all azimuths.
We present some data examples and discuss acquisition designs and waveform technologies to improve subsalt imaging.
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