油层非均质性对聚驱开发效果的影响及调整对策——以X油田为例  

Influence of reservoir heterogeneity on polymer flooding development effect and adjustment countermeasures——by taking X Oilfield as an example

作　　者：李国新[1] LI Guoxin(No.5 Oil Production Plant of Daqing Oilfield Company,PetroChina,Daqing 163513,Heilongjiang,China)

机构地区：[1]中国石油大庆油田第五采油厂,黑龙江大庆163513

出　　处：《石油地质与工程》2023年第4期51-55,共5页Petroleum Geology and Engineering

摘　　要：针对油层非均质性在聚合物驱开发过程中易造成油层动用比例低、聚合物利用率低的问题,以X油田为例,开展了油层非均质性对聚驱开发效果的影响及调整对策的分析。结果表明,非均质性越强含水下降幅度越小,含水低值时间越短,含水回升速度越快,油层动用比例越低聚驱开发效果越差;不同非均质类型的视吸液指数和采液指数在含水低值期下降幅度最大,含水回升期差异缩小。针对非均质性油层的聚合物驱建立了个性化调整对策,可为改善非均质性油层的聚合物驱开发效果提供借鉴。Aiming at the problem that reservoir heterogeneity is easy to cause low production ratio and low polymer utilization rate during the process of polymer flooding development,by X Oilfield as an example,the influence of reservoir heterogeneity on polymer flooding development effect and adjustment countermeasures are analyzed.The results show the stronger the heterogeneity is,the smaller the water cut decline is,the shorter the time of low water cut is,the faster the water cut recovery speed is,the lower the production ratio of the reservoir is.and the worse the development effect of polymer flooding is.The apparent liquid absorption index and liquid production index of different heterogeneous types decreased the most in the low water cut period,and the difference decreased in the rising water cut period.In the end,personalized adjustment countermeasures are established for polymer flooding in heterogeneous reservoirs,which provides a good reference for improving the development effect of polymer flooding in heterogeneous reservoirs.

关 键 词：聚合物驱 油层非均质性 动态变化特征 调整对策 

分 类 号：TE357[石油与天然气工程—油气田开发工程]