【Key words】 chemical flooding； oil displacement efficiency； sweep coefficient； sandstone oilfield； physical model； polymer； Alkali-Surfactant-Polymer system；
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sweep time coefficient 扫描时间系数
In contrast to the model with interlayer, the increase of sweep coefficient of middle-permeability layer in the model without interlayer is a little higher.8.
而无隔层模型相对于有隔层模型来说，中渗透层提高波及系数幅度相对较高。
参考来源 - 化学驱波及系数和驱油效率的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The mechanism and the extent of action of polymer solution's depleted layer effect and viscoelastic effect on displacement efficiency and sweep coefficient.
通过聚合物溶液在不同模型中的驱油实验，研究了聚合物溶液的衰竭层效应和粘弹性效应对驱油效率和波及系数的作用机理和作用程度。
Reservoir heterogeneity can lead to uneven waterline forward on flat moreover that will result in water breakthrough too early. Thus the area sweep coefficient was affected.
油藏非均质性严重，就会导致平面上水线推进不均匀，使生产井过早见水或水淹，从而影响水驱面积波及系数的大小。
Changes of sidewall sweep Angle and cowl position can influence inlet performance such as mass capture, total pressure recovery coefficient and uniformity of isolator exit flow field.
侧板后掠角大小和整流罩位置变化时，对进气道的质量捕获、总压恢复系数和隔离段出口流场的均匀性等都有一定的影响。
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