轮古东地区石炭系东河砂岩段沉积相

Study on the sedimentary facies of Donghe sandstone segment of Carboniferous system in the eastern area of Lungu

从东河砂岩段单井沉积相类型划分出发,详细研究了沉积相分类及特征、沉积相区域展布特征,提出该地区的东河砂岩段沉积环境主要为浪控滨岸环境的前滨—临滨环境,并在此基础上预测出砂体展布范围和有利储层分布,最后建立了东河砂岩段的沉积模式.

The eastern area of Lungu is one of important exploration targets in Tarim Basin,and Donghe sandstone segment is the important segment which developed oil/gas reservoirs during Carboniferous.The classification,the features and the regional distribution features of the sedimentary facies are studied in detail based on the analysis of the sedimentary facies of individual well.It is hold that the depositional environment of Donghe sandstone segment is mainly the shoreland charged by wave-foreshore and shoreface.The distribution range of the sand-bodies and the favorable reservoir distribution are forecasted.At last,the depositional model of Donghe sandstone is established.