摘要
聚合物井网投产初期，对特高含水油井采取暂时关井、高含水饱和度油层实施分步射孔的措施，以获得良好的驱油 效果和最佳的经济效益。本文根据聚合物流体性质和在油层中的渗流特征，考虑了油层中聚合物溶液浓度随时间和位置 的变化，及聚合物粘度、油层渗透率的变化，建立了非均质不规则井冈条件下聚合物前缘位置和油水井动态预测模型，定 量分析了高含水井开井和高含水层补孔时机对聚合物前缘推进速度、水井注入压力、聚合物驱油效果的影响，给出了聚驱 条件下高含水井层的合理打开时机；在大庆采油－厂北－区ＰＩ组油层聚驱井网进行了实际验证和应用。
When polymer wells initially put into production, production wells with extremely high water cut are temporarily shut off. Formation with high saturation is treated with perforation in order to obtain fine displacement efficiency and optimal economy benefit. Based the fluid properties and permeation characteristics of polymer in formation. The change of polymer concentration with time and position, and its viscosity as well as the formation permeability are taken into account. The model of polymer front and dynamic forecast is established on condition of heterogeneous and irregular well pattern. Quantitative analysis was make about the affect of time of opening well and perforation formation with high water cut on polymer front advance rate,injec- tion pressure and polymer displacement efficiency. The reasonable time of opening well or formation with water cut is recom- mended.
出处
《石油学报》
EI
CAS
CSCD
北大核心
2000年第6期61-66,共6页
Acta Petrolei Sinica
关键词
驱替前缘
二次完井
注入速度
聚合物驱油
polymer
displacement front
dynamic forecast
second completion
injection rate
