辫状河三角洲储层砂体建筑结构分析

本文应用建筑结构分析法研究塔河油田一区三叠系下油组砂体内部建筑结构。根据取心井岩心观察识别出12种岩相类型;通过连井剖面对比和测井曲线识别,采用层次分析的思路定义了7级界面;在岩相识别和界面划分的基础上划分出7种结构要素：河道滞留沉积（CHL）、河道充填（CH）、纵向砂坝（LB）、横向砂坝（TB）、落淤层（FS）、越岸细粒沉积（OF）和洪泛平原细粒（FF）;建立了砂体建筑结构平面组合模式：平面以河道充填（CH）和砂坝（CB）为主。

Architectural element analysis of the braided delta reservoir sandstones from the Triassic Lower Oil Measures in the Tahe Oil Field, Xinjiang

The architectural element analysis is applied to the reservoir architectures of the Triassic Lower Oil Measures in the first district of the Tahe Oil Field,Tarim Basin,Xinjiang.Twelve types of lithofacies are distinguished in terms of core examination.Seven orders of bounding surfaces are divided in the light of cores,well-tie section and well logs.Seven types of architectural elements are recognized,including channel lag deposits（CHL）,channel filling（CH）,longitudinal sandbar（LB）,transverse sandbar（TB）,fall-silt seam（FS）,overbank fines（OF） and flood plain fines（FF）.The planar model of the reservoir sandstones exhibits channel filling-and sandbar-dominated architectural elements.