胜利油田用化学法提高原油采收率的探索与实践

Research and Practice of improving the crude oil recovery ratloby cheinical method in Shengli Oil Field

本文从三次采油的角度探讨了提高采收率的问题。文中指出，化学法在胜利油田应用的可行性最大，其中尤以聚合物驱对胜利油田的条件最为适宜，进而重点介绍了胜利油田根据多数油藏具有油稠、出砂、渗透率高、非均质严重等特点而研制的交联聚合物、粘土胶和黄原胶等驱油方法。实验结果表明，在常规聚合物驱油方法基础上发展起来的交联聚合物驱，在高含水期可以改善水驱效果，提高采收率。并在实践中总结出了一套立足国产聚合物、交联剂和配制注入流程的注交聚合物新工艺。

his paper discusses how to improve recovery ratio in tertiary oil recovery. It is pointedout that chemical methods are the most feasible in Shengli oil Field , of which polymer flood-ing is the best one. The paper also details crosslinking polymer, clay gum and xanthan gumflooding methods which were developed to cope with the troubles such as viscous crude,sand, high permeability and serious inhomogeneity in most reservoirs in Shengli oil Field.Experiments say that the crosslinking polymer flooding based on ordinary polymer floodingmethods can improve water flooding effect to raise recovery ratio during high water-cutstage. A new crosslinking polymer flooding technology is recommended which is based onChinese polymer, crosslinking chemical, compounding method and injection procedure.