针对测井解释砂、泥岩剖面中地层岩性的划分、特别是过渡性岩层划分所存在的模糊性，提出了一种利用模糊模式识别划分岩性的方法。亦即利用常规测井资料，提取自然电位、自然伽马、微电极等８个对划分地层岩性有利的模式指标，建立了岩性标准模式。经对采油二厂南二区中块２口井葡萄花油层资料的处理，取得了较好效果。 Aiming at the stratigraphic lithology division in log interpretation sandstone and shale profile, especially the fuzzy nature of transitional strata division, a method of identifying lithology by using fuzzy pattern recognition is proposed. In other words, using the conventional logging data, 8 lithological criteria models, which are favorable to the division of formation lithology, such as natural potential, natural gamma ray and microelectrode, are extracted. After processing the data of Putaohua oil layer in the two wells in No.2 Block of No.2 Production Plant, the result is good.