针对因高泥、高钙、薄互层等非均质性较强引起的特低渗透砂岩储油层， 采用多种合理的方法研究有效厚度物性标准， 各种方法优、缺点互补， 较客观地确定下限。利用多条相关电测曲线识别储层岩性、物性及含油性， 即采用“多参数逐步判别法”制定有效厚度电性标准。较好地解决了特低渗透砂岩储层有效厚度的划分问题。 Aiming at the ultra-low permeability sandstone reservoirs caused by high heterogeneity of high mud, high calcium and thin interbeds, a variety of reasonable methods are used to study the physical property standards of effective thickness. Various methods have advantages and disadvantages, and are more objectively Determine the lower limit. The lithology, physical properties and oiliness of the reservoir are identified by using a plurality of related electrical measurement curves, that is, the “Multi-parameter Step-by-Step Discriminant Method” is used to establish the effective thickness electrical standard. The problem of dividing the effective thickness of the ultra-low permeable sandstone reservoir is solved well.