摘要
沉积环境和水动力状况的不同,常造成粒度分布上的差异,自然界里这种分布差异是随处可见的。碎屑岩粒度结构参数也往往随着沉积环境和水动力状况的改变而呈规律性变化。本文通过珠江口盆地11口井700块粒度样品的分析整理,结合粒度概率曲线图(CM 图)和粒度参数散点图的制作,初步达到了区分河砂(冲积砂)、海成砂和浊积砂的目的;并对它们进行了次一级细分的尝试,收到了在同一张粒度参数散点图上区分多种类型砂体的效果,同时对产生这种分布差异的原因进行了探讨。
Difference in the distribution of grain size is often resulted due to the di- fference in euvionmental and hydrodynamic conditions.This kind of difference in distribution can be abserved frequently in nature.By an analysis and pro- cessing of the grain size data of 700 rock samples from 11 well in Pearl river mouth basin,with the construction of grain size distribution probability curv- es,C-M curves,and scatter graph of grain parameters,a primary distinguish between river sand (alluvial sand),marine sand and turbidities has been made, and a further fine subdivision of them has been attempted.Thus various ty- pes of sand bodies can be classified on a single grain parameter graph.The causes of such differences in the distribution are discussed also.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
1990年第3期43-49,共7页
Petroleum Exploration and Development
