实验结果表明：硫酸钡结垢对岩心渗透率损害程度受温度、混配比例和累积注水量的影响。

The results show that: barium sulfate scale damage on the core permeability is affected by temperature, mixing ratio and the cumulative injection.

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目前的3种压裂液对葡萄花油层污染均较为严重，田菁胶、香豆胶、瓜胶压裂液对岩心渗透率损害率分别为27.89%，18.51%，26.06%。

These 3 kinds of fracturing fluids may seriously contaminate Putaohua reservoir. The damage rate of sesbania gum, fenugreek gum and guar gum were 27.89%, 18.51%, 26.06% respectively.

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实验用氮气以不同的驱替速度和驱替压差驱替岩心，得到由速敏性引起的渗透率损害及相关分析结果。

Nitrogen gas with different displacing velocity and pressure was used to displace the core in testing, the permeability damage and correlation analysis caused by velocity sensitivity were obtained.

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