最优分割法在地层划分中的应用——以梨参2井为例

APPLICATION OF THE OPTIMAL PARTITIONING METHOD IN STRATIGRAPHIC DIVISION—TAKING WELL LICAN 2 AS AN EXAMPLE

由于构造背景的差异、沉积环境的变迁及成岩作用的不同,可以造成岩石物理化学性质(如元素含量、矿物组合、粒度、重矿物特征等)的变化。当获得一组有序样品的定量分析数据时,可以利用最优分割法来划分样品段落,达到划分地层的目的。文中以梨参2井为例,讨论了最优分割法在梨参2井分组、分段中的应用。

The variation of physical and chemical properties of the rocks are resulted from the differences in the tectonical background,sedimentary environments, and diagenetic processes After gathering the data from the quantitative analysis of a set of ordinal samples,optimal partitioning method can be used to divide these samples into sections.In this paper,taking well Lican 2 as an exa- mple,the use of this method in the formation-dividing and member-dividing of strata is discussed.