This study was aimed at derisking several Jurassic prospects situated in the Central North Sea. Prior to this study, reservoir presence was thought to be the main risk. The structural history of the area is very complex, with an interplay of extension, salt tectonics and sediment deposition. The stratigraphic and structural frameworks together determine the reservoir and seal risks of prospects within the Jurassic sequence. This study comprises of a combined stratigraphic-structural analysis on reprocessed seismic, and has revealed that the interaction between tectonics and sedimentation leads to seal risks not previously identified. This study shows that in the area of interest, potential leaks paths exist connecting Fulmar prospects and Kimmeridge Mass Flows by both top seal erosion and juxtaposition of thief sands across faults.


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