表征沉积岩所含有机质丰度的数据,特别是有机碳丰度实测数据和氯仿沥青丰度实测数据,是石油地质工作者经常用到的数据。目前人们对这些数据的统计和应用,主要采用个别值法、平均值法、数值区间法和正态分布法,这四种方法在不同程度上均不甚完善,现简述如下。 The data characterizing the abundance of organic matter in sedimentary rocks, especially the measured data of organic carbon abundance and the abundance of chloroform bitumen, are often used by petroleum geologists. Currently, the statistics and applications of these data are mainly based on the individual value method, the average value method, the numerical interval method and the normal distribution method. These four methods are not perfect in varying degrees and are summarized as follows.