The efficiency of oil recovery with water flooding process is poor in low-permeability oil reservoirs.

低渗透油藏注水开发效果差、采收率低，而采用气驱技术是动用此类难采储量的有效方法之一。

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The efficiency of oil recovery with water flooding process is poor in low-permeability oil reservoirs.

低渗透油藏注水开发效果差、采收率低，而采用气驱技术是动用此类难采储量的有效方法之一。

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