Sand reservoir seismic characterization and its application to oilfield development

Some strategy and techniques are presented on seismic sandstone oil reservoir characterization in order to find a way to implement the true integration of seismic data, well logs and geology. It's believed that well logs constrained seismic impedance inversion based on geological model is the essential technique, and a series of methods are grouped and employed including inclined well synthetic seismogram, seismic events calibration by iteration with wavelet inversion, Quasi-acoustic log reconstruction, sparse pulse impedance inversion restricted by well logs, reservoir parameters prediction by stochastic simulation, and integrated working flow. In certain marine oil field area, all the techniques are applied to characterize two oil formations in detail, including structure, lithology, reservoir distribution, and oil distribution. Good geology laws have been taken, which has provided important foundations for deploying well locations. The research and results show the proposed reservoir seismic characterization methods, of which log reconstruction, impedance inversion and stochastic simulation are key techniques, and they can estimate the reservoir parameters and predict oil beds very well.