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根据大庆油田聚合物驱矿场试验资料,分析了特高含水井区原点状注水井周围和原注水井排附近聚合物驱动态特点、剩余油状况,并利用数值模拟和经济评价方法对原点状注水井区和原注水井排两侧聚合物驱布井方案进行了优选。研究表明原注水井排两侧可布聚合物驱生产井,布井方式宜采用原注水井排中与两侧注入井相对应的注入井作为注聚井,其它老注水井关井的方式;原点状注水井周围可布聚合物驱生产井,原注水井应尽量作为注聚井,当其位于生产井井点时,原注水井可不利用或采取缩小新布注入井与原注水井间距离的布井方式。通过优选布井方式,可有效地改善大庆油田特高含水井区聚合物驱效果
According to the experimental data of polymer flooding field in Daqing Oilfield, the characteristics of polymer driving state and the remaining oil around the original injection well and the injection well row in the ultrahigh-water well area are analyzed. The numerical simulation and economic evaluation method are used to analyze the origin point injection Wells and polymer flooding wells on both sides of the original injection well program was optimized. The research shows that polymer flooding production wells can be distributed on both sides of the original water injection well row. The well drilling method should adopt the injection wells corresponding to the injection wells on both sides in the original water injection well row as the way of injecting and other old injection wells closing the well; The injection well may be surrounded by polymer flooding production wells. The original injection well should be as a poly-injection well. When it is located at the well point of the production well, the original injection water well may not utilize or adopt a well-welling method of narrowing the distance between the new injection well and the original injection water well. By optimizing the well pattern, it can effectively improve the polymer flooding effect in the ultra-high water well area of Daqing Oilfield