本文在编写单井地质、水文地质卡片的基础上,用数理统计方法对获得大量的单井地层厚度资料进行了整理。结果表明,从嘉陵江组第五段到须家河组第六段的八个段中,有六个段的地层厚度分布型式是正态分布,并可按照数理统计方法确定沉积厚度的变化范围。结果不单是较确切地描述了地层厚度的变化,也为判断断层等问题提供了依据。 Based on the compilation of single-well geology and hydrogeology cards, this paper uses mathematical statistics to get a large number of single-well formation thickness data. The results show that six of the eight sections from the fifth section of the Jialing River Formation to the sixth section of the Xujiahe Formation have a normal distribution, and the variation range of sedimentary thickness can be determined according to mathematical statistics. The result not only describes the change of formation thickness more accurately, but also provides the basis for judging faults and other issues.