摘要
利用统计分析的方法,通过编制各类图件研究层内夹层分布规律、层内渗透率非均质程度和渗透率韵律性.研究表明三角洲分流平原亚相典型沉积单元:夹层个数为1-3个,夹层密度平均值为0.149,夹层平均厚度0.2米.变异系数峰值分布在1.20-1.40,主要分布在0.25以下,约81%;突进系数峰值分布在3.2-4.0,主要分布在1.0-1.25,约82%;级差主要分布在9以下,约99%;渗透率非均质程度为均匀型.发育正韵律、反韵律、均质韵律和复合韵律4种渗透率韵律类型.层内非均质程度中等.
Using statistic analysis method, by means of compiling various maps or drawings, to research the distribution regularities of interlayer, permeability heterogeneity and perme- ability rhythmicity of the in-layer. Researches show that typical sedimentary unit of delta distributary plain subfacies： interlayer number ts i-3, the mean＇ density is 0：149, mean thick＇ ness is 0.2m. variable coefficient is distributed between 1.20 and 1.40, majority is under 0.25, approximately 81%; permeability max-mean ratio is 3.2-4.0,main distribution is 1.0-1.25,about 82%, permeability ratio is under 9, some 99%; the degree of permeability heterogeneity is ho- mogeneity. There are 4 Permeability rhythm types, i.e. positive rhythm, inverse rhythm, Homogeneous rhythm and composed rhythm： In-layer heterogeneity is moderate.
出处
《数学的实践与认识》
北大核心
2016年第2期131-135,共5页
Mathematics in Practice and Theory
基金
黑龙江省教育厅科学技术研究项目(12531056)
关键词
三角洲分流平原
典型沉积单元
夹层
渗透率
非均质性
delta distributary plain
typical sedimentary unit
interlayer
permeability
het- erogeneity
