At high speed, asphaltene plugging is more serious with increase of flow rate. The damage degree of asphaltene plugging is higher in low permeability core than in high one.

在较高流速下，随速度升高，沥青所造成的孔喉堵塞更加严重，在低渗岩心中沥青堵塞引起渗透率伤害程度大于高渗透岩心。

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It is indicated that the technique of shielded temporary plugging is quite effective for reservoir protection of viscous oil fields with high permeability and low pressure in Bohai Sea.

实践证明，屏蔽暂堵技术是目前对渤海高渗、低压、稠油油田实施储层保护的一项行之有效的技术。

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For the cores with different permeability, its water plugging rate was higher than 85%, oil plugging rate was lower than 20%, and-selectivity was good.

对不同渗透率的岩芯，堵水剂的堵水率大于85%，堵油率小于20%，具有良好的选择性。

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