化学驱数值试井在大庆聚合物驱油区块的应用

Chemical Flooding Numerical Well Testing in Daqing Polymer Flooding Block

聚合物驱已成为大庆油田三次采油的主要技术,但地层压力分析一般采用解析试井方法进行评价。对比分析了解析试井和数值试井解释的各项参数,数值试井解释的渗透率更接近于原始渗透率,比传统解析试井能够提供更丰富的解释结果;在L*区块应用化学驱数值试井方法评价了地层压力、流度分布、聚合物前缘推进等开发参数,反映了井组注采关系的完善程度,能够对油田开发调整起指导作用。

Polymer flooding has become the main technology of tertiary oil recovery in Daqing Oilfield.However,formation pressure analysis is generally evaluated by analytical well testing method.By comparing and analyzing the parameters of analytical well testing and numerical well testing interpretation,the permeability of numerical well testing interpretation is closer to the original permeability,which can provide more abundant interpretation results than traditional analytical well testing.In L*block,chemical flooding numerical well testing method is applied to evaluate the development of formation pressure,fluidity distribution,polymer front advance and so on.The parameters reflect the degree of perfection of injection-production relationship of well groups,and can play a guiding role in oilfield development adjustment.