摘要：油田注水开发过程中，天然裂缝水窜具有强烈的普遍性和方向性。
Abstract: in the process of water injection development, the water breakthrough of natural fracture has strong universality and directivity.
裂缝可对垂直其方向的生产井减弱注水效果，造成部分井水淹。
Fractures is a good passage to oil but bad to water flooding because it can weaken effect of water flooding of Wells which...
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