Reservoir structural study was conducted in the offshore Tshiala oil field, Democratic Republic of Congo. In reservoir characterization, accurate structural interpretation is crucial as the reservoir structure is treated as one of hard data.
In order to construct high-frequency reservoir model from seismic data, new method for the improvement of seismic resolution was developed. This method, called pseudo-seismic processing, consists of the following steps. High-frequency reflectivity series are derived through the combination of two deconvolution schemes, and then pseudo-seismic traces are generated by convolving an objective wavelet.
This procedure enables the reliable correlation of seismic data with the detailed reservoir structure at the well locations, and high-frequency 3D reservoir structure can be interpreted. Constructed model using this method together with geostatistics was proved to be useful as the excellent history matching was achieved in reservoir simulation.
