Conditioning Reservoir Model and Aiding Well Planning Using Probabilistic Seismic Inversion in a Central North Sea Field

A reservoir modelling project was performed for a distal Palaeocene turbidite reservoir located in the Central North Sea. In order to assess the consistency of the reservoir model with the available 3D seismic data, synthetic seismic was generated from the initial model and compared to the actual seismic. The comparison between synthetic and actual seismic revealed significant mismatches. In an effort to achieve a reservoir model consistent with the good quality 3D seismic data a probabilistic seismic inversion was undertaken to update the properties in the model. An innovative approach was then applied to generate high, low and base case, facies model scenarios. The method involved generating variograms and probability functions from probabilistic seismic inversion products, and combining them with well data and regional depositional knowledge. The output products have been used to generate multiple models for dynamic simulation and hence hydrocarbons volumetrics and forecasting, enabling the optimization of the placement of planned producer wells.