The expert system EKRAMON for choosing of the oil field development method and simulation of the oil field development process, working in an interactive user dialog mode on the base of IBM/AT class personal computer with an extended memory and giving the consultation results without any sufficient delay, is described.

It can be reached by striving for a diminishing number of the rules entered in the system with the help of expert work proper organization and an interpretation of expert data, according the developed method of certainty factors using. The high trustworthiness of the variants to be chosen could be achieved with the help of using a fuzzy logic. Different knowledge bases of the considered expert system are described.

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