就目前对储层的评价方法而言，有数理统计的方法，有综合数学的判别方法，有专家权重评判方法等，这些方法对储层的分类界限并没有采取一种比较科学的方法，多数情况下是人为的划定储层分类的界限。笔者在研究河南某油田V_下油组储层特征时，对关键井的取心段采用了专家评分的方法来确定样品的综合评判分数，还利用了累计概率的方法来确定该油组储层类型的界限，并把研究区的储层划分为4类。该方法的原理是：相同类型的储层，其综合评判参数在概率累计图上会近似地落在同一条直线上^［1］。根据此原理利用逐步判别程序对于非取心井段的储层进行综合分析，建立判别函数，达到了对储层进行定量评价的目的。通过把研究成果与现场实践相结合，符合率达90%以上，证明用这种方法来进行储层定量评价是可行的。

As far as super-highly watered cut oil fields are concerned, the appreciation of the reservoirs should be conducted quantitatively so that the results can govern the dependable crop and the potential capacity. Nowadays, there are some waysof evaluating the reservoirs, such as mathematical statistics, comprehensive mathematical discrimination, professional weight discrimination. The bounders of different kinds of reservoirs are not defined scientifically in these methods. Instudying the character of V oil group reservoirs in Henan, China, we took the way of professional weight discrimination to evaluate the core wells, getting thedata of comprehensive apprehension. The reservoirs are divided into 4 types by using cumulative probability to determine the bounders of the reservoirs. The principle of using cumulative probability to determine the bounders is that the comprehensive parameters of evaluation will drop on the same line as long as the reservoirs have the same characters. Using the step by step discriminant program to define the non-core reservoirs, therefore, creating the discriminant equations of evaluating the reservoirs. The field experiment shows that the data agreement percentage is over 90%, showing that the new method is feasible. 