4D seismic over the Greater Plutonio development in Block 18, offshore Angola, has provided important subsurface data and significantly aided well placement and reservoir management. A baseline survey and two monitors have so far been acquired, with a third monitor planned for 2013. Good source and receiver repeatability has been key to providing high quality 4D images. Improvements in 4D seismic processing, including multi-vintage parallel workflows, have led to enhanced images and have provided long term value for the development through better well placement.


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