【Key words】 fractured reservoir； low-permeable reservoir； water flooding development； oil/water well quantity ratio； injection-production system adjustment；
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PurposeTo improve water flooding development effect in low permeability oil field.
目的改善低渗透油田注水开发效果。
These characteristics brought a lot of difficulties and contradiction to the work of water flooding development.
这些特点都给注水开发工作带来了困难，油田在注水开发过程当中遇到很多矛盾。
For the water flooding development of water sensitive reservoir, pretreatment must be carried out to prevent the clay swelling.
对于水敏油藏注水开发，必须进行防膨预处理。
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