Abstract: The development of the assisted expert system for the history matching of reservoir numerical simulation is a process on the increase. The knowledge base is going to be proficient and expanded with the improvement of system function, the blocks of the knowledge can be formed in the light of the different solutions. This paper describes the dynamic dispatch mechanism
of knowledge for consummate of the assisted expert system for the history matching of reservoir numerical simulation. In the modified clips system, the inferential mechanism is that the rules and facts are chosen into inferential machine dynamically according to present status during inference; the ODBC interface of the inferential service object is made to dispatch rules and
facts stored in many heterogeneous databases. In the mean, the foundations of the research and development for multi-expert system is built.

Key words: reservoir, mathematics model, performance analysis, system, mechanism