后续水驱阶段采收率提高值为4.21%，增油效果显著。
Thus recovery rate is increased by 4.21%, which has an obvious effect.
实验结果表明，M驱油剂可大幅度提高水驱原油采收率。
The experimental results show that the displacing agent m can greatly enhance oil recovery.
实验结果表明，M驱油剂可大幅度提高水驱原油采收率。
The experimental results show that the displacing agent m can greatly enhance oil recovery.
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