聚合物驱后增产技术研究

Research on Technology of EOR after Polymer Flood

针对聚合物驱后提高采收率问题,在孤岛油田研究了3种增产技术,分别是高效洗油技术、聚合物絮凝再利用技术、深部调剖技术。采用平板模型模拟油藏非均质特点,改变各作业剂注入孔隙体积倍数,比较其采收率增值和经济效果。研究表明:聚合物驱后采用上述技术可以进一步提高采收率,各作业剂用量需要优化,才能最大限度提高开发效果,提高波及系数的增油效果较提高洗油效率更为明显。

Three kinds of EOR methods are researched to improve oil recovery after polymer flooding under the reservoir conditions of Gudao oilfield,which is enlisted as high-efficiency oil displacement technology,polymer flocculating reutilization technology and in-depth profile control technology.Using plate models to simulate heterogeneous reservoir characteristics,oil recovery increment and economy efficiency are researched by changing the injecting volume of operation agents.The results indicate that oil recovery can be enhanced by applying above-mentioned technologies.The injecting volume should be optimized to get more benefits.Improving sweeping efficiency shows more potentialities on EOR than increasing wash oil rate.