【Key words】 Fracture； Ultra-Low Permeable Reservoir； Water Flooding Pilot； Pingqiao Northern Block；
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Meanwhile, it discusses the pattern cycle water injection rate and effect of cyclic water flooding in the pilot in western area of Fuyu Oil Field.
同时，结合扶余油田西区矿场实例对周期注水的注水方式、周期、注水量及效果进行了探讨。对裂缝性砂岩油藏实施周期注水具有重要的借鉴意义。
Water injection is always difficult in low permeability reservoirs, to improve the working degree of this reservoir, Wei42 14 well group was selected to conduct the nitrogen gas flooding pilot test.
低渗透油藏的注水往往存在很大困难，为提高此类油藏的动用程度，选择卫4 2 14井组实施了氮气驱先导试验。
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