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石油测井解释是一项逻辑推理和数值计算交错进行的复杂过程。为了描述测井解释专家的这种知识、经验并模拟其思维方式,在扩充纯产生式规则的基础上,我们开发了知识表达语言——NFA,它把逻辑推理和数值计算综合成统一的形式。石油测井解释专家系统 LIX 先后在 INTERDATA-85机和 PE-3230机上实现,现场(胜利油田)运行近两年,解释了130余口井,符合率94%以上。LIX 实质上是 NFA 语言的解释系统,它的研制成功,说明了 NFA 语言的有效性和实用性。
Oil log interpretation is a complicated process of logical reasoning and numerical calculation interleaving. In order to describe this knowledge, experience and simulation of log interpretation experts, based on the expansion of pure production rules, we developed the knowledge representation language - NFA, which integrates logical reasoning and numerical calculation into a unified form . Oil Well Interpretation Expert System LIX has been implemented on INTERDATA-85 and PE-3230 machines in succession. The field (Shengli Oilfield) has been operating for nearly two years, explaining more than 130 wells with a coincidence rate of over 94%. LIX is essentially an explanation system of NFA language, and its successful development shows that the NFA language is effective and practical.