东风港油田沙四段三角洲相沉积的粒度特征

Grain size characteristics of delta facies of the fourth member of Shahejie Formation in Dongfenggang Oilfield

讨论了东风港油田沙四段三角洲相各沉积微相的粒度特征。在对28口井241块样品粒度分析的基础上,总结归纳出不同微相的概率曲线特征,并利用C-M图、萨胡判别式和粒度离散图研究了沉积类型,验证了萨湖的沉积环境判别式对沙四段三角洲沉积微相划分的可行性。

This paper discusses on the grain size characteristics of each sedimentary microfacies in delta facies of the fourth member of Shahejie Formation.On basis of the grain size analysis data for 241 core samples from 28 wells, the probability curves of different microfacies are summarized.CM pattern, Sahu Formula and the scattergram of grain size are used to study the types of sedimentary facies.The feasibility of Sahu Formula on delta deposit classification is verified.