Enhancing resolution of seismic data based on the changing wavelet model of the seismogram

Summary: A physical model based on the true geology in Daqing oilfield, China, was used in this work for laboratory seismic data acquisition, processing and attributes analysis. By saturating the model with oil, gas and water respectively, seismic data were acquired and processed. Furthermore, various seismic attributes were generated to study the wave phenomena from reservoir with different fluids. Difference attributes were used in this work, which were derived by removing the non-reservoir effects. Through analysis of the difference attributes, it was found that the differences of amplitude, phase and time shift between water and oil saturated models were relative small but visible, while the differences between the oil, water and gas saturated models were more obvious. The attributes of the different fluid saturated models were also affected by incidence angle and petrophysical properties such as porosity.