沉积环境与多元统计综合分析法

Application of Comprehensive Analysis Method of Sedimentary Environment and Multiple Statistics to the Explanation of Sedimentary Facies

本文首先根据地震资料提取了十二种地震参数，然后通过对ＬＨ油田ＴＺ地区沙三上段下部地层进行沉积环境分析，确定了可能存在的沉积相类型，并用有序样品聚类的方法对过井和井旁地震测线按沉积相个数进行分割，由此而建立了该区各类沉积相的判别函数。通过这些判别函数，用逐步判别分析的方法，对该区其它地震测线的参数进行判别分类，最后搞清了研究区目的层的沉积相展布。通过分析和计算证明，这一方法对有地震资料的盆地或地区进行沉积相的划分。

This paper collects 12 types of seismic paremeters from seismogram, analyzes the sedimentary environment of the low stratum of the S 3 upper member in the TZ area of LH oilfield, and determines the type of sedimentary facies which possibly exists. This paper also divides the seismic measuring lines by the sendimentary facies number with the cluster analysis of the ordered sample method; therefore, the descriminant functions of sedimentary facies in this area are set up. With these discriminant functions, the parameters of seismic measuring lines in this area are discriminated and classified by the method of successive discriminant analysis, and at last the throughgoing of sedimentary facies in this section of bed of interest is made clear. This method, which is proved by analysis and calculation, is very efficient for dividing the sedimentary facies in the areas or basins where there is a seismogram.