为研究渤海S油田聚合物驱产液下降规律,进一步改善聚合物驱效果,运用油藏数值模拟技术,结合油藏动态分析,计算了不同条件下油井的合理产液指数降幅,并利用现场数据进行对比验证.结果表明:聚合物驱后油井产液指数下降具有普遍性,并受注聚合物时机、油井位置、周围是否有注水井的影响;注聚合物区块内,无水井干扰的油井合理产液指数降幅为30％～50％,有水井干扰时油井合理产液指数降幅为10％ ～ 30％,产液指数降幅位于合理降幅范围内的油井,聚合物驱效果较好.%In order to study the descending law of the polymer-flooded liquid production index for Bohai Oilfield S and further improve the effects of the polymer flooding,the reasonable reduced degree of the liquid production index under different conditions of the oil producer was calculated by using the reservoir numerical simulating technique and reservoir dynamic analysis.And moreover with the help of the field data,the comparison and verification were conducted.The results show that the decline of the liquid production index after the polymer flooding is universal,and it is influenced by the timing of the polymer injection,the location of the oil wells and the surrounding water injection;Within the polymer flooded block,the liquid production index is reasonably reduced by 30％-50％ if no water injection well interfere,while the decline degree is 10％-30％ if there is the disturbance.For the producers which the liquid production index reduction within the reasonable range,the polymer flooding effects are much better.
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