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- W2808954185 abstract "细管驱替实验结果表明陕北某致密砂岩油藏在实施CO2驱时无法达到混相。为了明确非混相驱下CO2超临界性质对驱油贡献的大小及对驱油特征的影响规律，开展了室内超临界和非超临界CO2驱油实验研究。结果表明：CO2超临界性质对驱油具有积极影响，在超临界压力点附近，压力由非超临界过渡到超临界的较小变化会引起驱油特征的明显改变。当累积注入量达到0.5 PV以后，CO2超临界驱油效果明显好于非超临界驱油效果；超临界驱体现优势的阶段主要是CO2注入量为0.5~1.5 PV时，相同条件下采出程度比非超临界驱最高高出约10%。超临界驱和非超临界驱换油率出现高峰的注入时段基本都在注入量约为1 PV时，但前者明显高于后者。总之，无论是在注入性能方面，还是在驱油效率和换油率等方面，超临界驱均优于非超临界驱。" @default.
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- W2808954185 date "2018-06-25" @default.
- W2808954185 modified "2023-09-23" @default.
- W2808954185 title "致密砂岩油藏超临界与非超临界CO 2 驱油特征" @default.
- W2808954185 doi "https://doi.org/10.12108/yxyqc.20180317" @default.
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