Based on the geological characteristic analysis of Block No. 1 in NE Zone of Lamadian Oilfield, the improving methods of the polymer flooding effects for the second-order oil reservoirs are presented through integrating with the experiences of the correspondent polymer-flooding pilot test: the controlled degree of the sandbodies can be enhanced by optimizing the well patterns and spaces; considering the compatibility between the reservoirs and the polymer properties including relative molecular masses and concentrations; full-scale profile control to improve the effective utilization of the polymer before the polymer flooding; tracking and adjusting the injection allocation scheme in the course of polymer flooding. The practice proves that the method has increased the development effects of the block, and moreover possess an guiding significance for the polymer flooding of those similar oil reservoirs.%在分析喇嘛甸油田北东块一区地质特征的基础上,结合该油田二类油层注聚矿场经验,给出了在二类油层改善聚合物驱效果的方法:通过优化井网、井距提高对砂体的控制程度;考虑聚合物相对分子质量、质量浓度与油层的配伍性;注聚前整体调剖以提高聚合物的有效利用率;注聚期间进行配注方案跟踪调整.实践证明,该方法提高了喇嘛甸油田北东区块的开发效益,对类似储层实施注聚开发方案具有指导意义.
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