The cornerstone of successful reservoir characterization is a detailed reservoir model reflecting the correct geological framework and intelligently populated with rock properties. Integration of seismic data into reservoir characterization workflow allows the creation of a spatially detailed reservoir model from otherwise spatially sparse well data. There are two main issues which need to be addressed when incorporating seismic data into reservoir characterization: construction of an accurate velocity field for time-to-depth conversions and finding geostatistical relationships between seismic attributes and rock properties. The latter is a separate topic and will not be covered here. This paper describes a new methodology to generate high-resolution 3-D velocity field that is consistent with the seismic inversion in time and the sequence stratigraphic framework in depth. This new modelling workflow has been successfully applied in a number of reservoir characterization projects.