Abstract：At present,prediction of remaining oil distribution for oil field development is mainly performed using reservoir numerical simulation.In this work,a joint inversion is proposed for fluid forecast using geophysical data as a constraint by integration with conventional methods of reservoir numerical simulation.Results from this process can be consistent with fluid flow and spatial geophysical attribute characteristics.This could be an effective schema for remaining oil distribution characterization in mature fields.In this paper,we use the static parameters of Yong 3 fault block such as P-wave and S-wave logging data,permeability,porosity,lithofacies etc,and combine with dynamic parameters in development for application.First,we calibrate the rock model with logs,such that the template for geophysical responses on different dynamics states can be created.Then we project the pre-stack seismic inversion data onto numerical reservoir simulation grid.The saturation at each grid can be estimated using the calibrated template.Finally,the fluid spatial distribution can be mapped by integration of reservoir numerical simulation and seismic pre-stack inversion data.
