sand member meaning in English

砂层

Regarding pi1 - 2 oil bearing group in the polymer flooding well pattern in the north part of the north section in lamodian oil field , as the target pay zone , this paper has firstly drawn the sedimentary microfacies maps of each time unit by means of the principle of architecture - element analysis and correlation method of sand member in fluvial - delta depositional system . lt gives a sound geological foundation for classification of plane flow unit . at the same time , this paper has classified vertical flow unit
首先，本文以喇嘛甸油田北北块聚合物驱井网葡i1 - 2砂岩组为研究目的层，应用储层建筑结构解剖的知识和河流-三角洲相油层对比方法，绘制了各沉积单元的沉积相带图，为平面流动单元的划分提供了地质基础，同时，划分了垂向流动单元。