3D Geological and Seismic Modelling for Reservoir Characterization Workflow Optimization

This work concerns a 3D elastic seismic modelling of a complex reservoir integrated within a multiattribute reservoir modeling workflow in order to generate, rank and include seismic attributes with uncertainty evaluation and reduction. The correspondence between seismic data and reservoir properties is complex and non univocal. The problem has been approached by constructing a synthetic reservoir model that exhibits the geometrical and petrophysical complexity of a real field - from deep offshore West Africa – and generating a 3D synthetic seismic response by means of forward convolutional modelling. Synthetic seismic data have been processed through a seismic inversion methodology in order to include inverted seismic attributes in reservoir simulation steps and to compare the final reservoir model with the actual one. The proposed workflow takes into account different types of data to optimize quantitative interpretation through the integration of various disciplines, such as geophysics, petrophysics, rock physics, geology and reservoir simulation.