Turbidite reservoirs, deepwater clastic systems often characterized by complex sand distribution, stretch the limits of conventional seismic and geostatistical modeling and analysis. Nevertheless, such reservoirs must produce at a high rate to cover large drilling and production costs. Hence, reservoir heterogeneity must be accurately quantified and the associated uncertainty measured to determine the investment risk.

We propose a methodology to create fine-scale reservoir models of turbidite systems constrained by prestack seismic and well-log data and then apply it to a North Sea field in the preproduction phase. The first stage, a probability model of observing sandy and shaly facies (originally...

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