大庆油田特高含水井区聚合物驱潜力分析及布井方案优选

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

Well spacing scheme optimized for polymer flooding in superhigh water cut area of Daqing oilfield.

ccording to the field test datum of Daqing oilfield, the characteristic of polymer flooding performance and remaining oil state near the original scattered flooding well and the original injection well in superhigh water cut area has been analyzed. By using numerical simulation and economic evaluation method, the well spacing scheme optimized for polymer flooding on two sides of injection well line has been carried out. It is shown that the two sides of original injection well line can space polymer flooding productive wells, the relative wells on original injection well line can be used as polymer injection wells, and the others closed. The polymer flooding productive wells can be spaced round the original scattered flooding well which will be used as polymer injection well as possible. If the original scattered flooding well is on the point of productive well, it could be closed or the new injection well space could be shorted. The polymer flooding result in the superhigh water cut area of Daqing oilfield can be improved effectively by the well spacing scheme optimized.