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。

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The residual resistance factors and the depleted layer thickness of Xanthan solution decrease with injection speed increase, but recovery does not vary much.

注入速率增加时，黄原胶溶液的残余阻力系数下降，衰竭层厚度降低，采收率变化不大。

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When the concentration of Xanthan solutions was higher than the entanglement concentration, the depleted layer thickness and the apparent viscosities varied little.

黄原胶溶液的浓度高于缠结浓度时，衰竭层厚度和表观粘度变化不大。

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Porter, and he volunteered seventy acres of land where he had grown only cotton or corn for twenty-eight years, applied no fertilizer, and almost completely depleted the humus layer.

NEWYORKER: Testing, Testing