An advanced graphic post-processing system has been developed. The principal feature of this system is an three-dimensional(3D) expression of the whole reservoir phenomena as engineering animations. This system can show the distribution of parameters of the reservoir simulations by forming colored-transparent iso-value surfaces in the 30 space and the dynamic changes of the parameters by moving the surfaces smoothly with interpolation of the data between calculated time steps. Furthermore, it can create a contour map on an arbitrary cross section of the reservoir. The system is applicable to presentation and instruction as well as to result evaluation.