From a number of wells and a closely spaced grid of seismic sections, it is possible by two dimensional forward seismic modelling, to predict the lithological framework below what is normally thought of as the seismic resolution limit. It is thus possible to build a geological model with sequence thicknesses of for instance 5 meters at a depth of 1600 meters. The modelling is executed by generation of a synthetic section imaging the seismic section and results in a geological model with a high degree of detail.