| Imaging Through Gas | ||
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| Multicomponent acquisition and processing can provide greatly improved imaging compared to conventional data. The additional information provided by analysis of S-wave data leads to a more accurate model of the sub-surface and hence improved imaging results. Unlike P waves, transmission of S waves is largely insensitive to pore fluid content. Many areas of the world feature shallow gas pockets, gas chimneys, gas-charged fault zones, etc.
Multicomponent Offshore Norway
Multi-azimuth OBC data were recorded in 2006 and processed by CGGVeritas in 2007, through a complex 4C sequence. This included Tau-Px-Py demultiple and intensive S-wave static correction work. The multicomponent OBC results represent a significant improvement in the image of the reservoir. This allowed accurate interpretation of the bounding fault leading to more accurate reservoir volume calculations. |
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