Prediction of Oil/Gas Saturation Variation with Time-lapse Seismic Elastic Parameter Inversion

It is well known that time-lapse seismic can improve the Oil or Gas recovery from existing reservoirs and<br>it has been taken as a powerful tool for reservoir management. It shows how a reservoir behavior changes<br>at different development times and provide valuable information for further development plan. In this<br>paper, a prediction method with ANN (artificial neural network) based on time-lapse seismic prestack<br>elastic parameter inversion is introduced to describe the oil or gas saturation variation and reservoir<br>pressure change.