... 低渗透层 low permeability layer ; less permeable layer 凝胶渗透层析 GPC 地下不渗透层 subsurface barrier ...
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Adopting nitrogen foam flooding can effectively blank off lower oil saturation of high permeability zone. and enhance middle-low permeability layer of oil displacement efficiency.
采用氮气泡沫驱可有效的封堵含油饱和度较低的高渗透层,提高中、低渗透层的驱油效率。
参考来源 - 普通稠油油藏氮气泡沫驱应用技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The throat characteristic of the low permeability reservoir is the crucial factor that decides if physical quality is good in low permeability layer.
低渗透储层喉道特征是决定储层物性好差的关键因素。
The effect of polymer solution on improvement of oil-displacement efficiency in high permeability layer is better than the effects in medium and low permeability layer.
聚合物溶液在模型高渗透层内提高驱油效率作用的效果要好于中、低渗透层。
Because of complex pore structure in low permeability sandstone reservoir, it was quite difficult to identify oil or water layer and evaluate reservoir using normal methods.
低渗透砂岩油藏因其孔隙结构复杂，利用常规方法进行油水层识别和储层评价难度较大。
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