In order to reasonably reutilize oily sludge produced from polymer flooding (OSPPF) in the Shengli oilfield, firstly, the basic characteristics of OSPPF are analyzed through SEM, pH meter, and a Particle Size and Zeta potential analyzer. Then, the effects of different factors on the gel profile control system were systematically analyzed. The optimized prescription of the gel profile control system was 0.4% polymer + 0.1% emulsifier + 16% OSPPF + 0.05% stabilizer + 1.2% crosslinker + 0.1% pH regulator, with a gelling time of 32 h and gelling viscosity of 49910 mPa·s at 60°C. Finally, the application performances of the profile control system were evaluated. The results showed that the profile control system had a good anti-shear performance which could continue to form a gel with a viscosity of 45138 mPa·s after 30 min shear. Meanwhile, the gel profile control system exhibited good viscoelasticity and thermal stability so that the viscosity retention was about 90% at 60°C after 180 days. Furthermore, the permeability ranged from 21.24 to 29.63 μm², plugging rates were larger than 94% and it was suitable for profile control in high-permeability zones. Therefore, this technology not only solves the pollution problem of OSPPF but also enables resource reutilization.

为了合理利用胜利油田聚合物驱油中的油泥，首先通过扫描电镜，酸度计，粒度分析仪和Zeta电位分析仪对OSPPF的基本特性进行了分析。然后，系统地分析了不同因素对凝胶轮廓控制系统的影响。凝胶曲线控制系统的最佳配方是0.4％聚合物+ 0.1％乳化剂+ 16％OSPPF + 0.05％稳定剂+ 1.2％交联剂+ 0.1％pH调节剂，胶凝时间为32 h，胶凝粘度为49910 mPa·s在60°C下。最后，对轮廓控制系统的应用性能进行了评估。结果表明，调剖系统具有良好的抗剪切性能，剪切30min后可继续形成粘度为45138mPa·s的凝胶。与此同时，凝胶轮廓控制系统表现出良好的粘弹性和热稳定性，因此180天后在60°C下的粘度保持率约为90％。此外，磁导率从21.24到29.63μm²，堵漏率大于94％，适用于高渗透率地区的剖面控制。因此，该技术不仅解决了OSPPF的污染问题，而且还实现了资源的再利用。