Abstract Active-polymer attracted increasing interest as an enhancing oil recovery technology in oilfield development owing to the characteristics of polymer and surfactant. Different types of active functional groups, which grafted on the polymer branched chain, have different effects on the oil displacement performance of the active-polymers. In this article, the determination of molecular size and viscosity of active-polymers were characterized by Scatterer and Rheometer to detect the expanded swept volume ability. And the Leica microscope was used to evaluate the emulsifying property of the active-polymers, which confirmed the oil sweep efficiency. Results show that the Type I active-polymer have a greater molecular size and stronger viscosity, which is a profile control system for expanding the swept volume. The emulsification performance of Type III active-polymer is more stable, which is suitable for improving the oil cleaning efficiency. The results obtained in this paper reveal the application prospect of the active-polymer to enhance oil recovery in the development of oilfields.

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不同官能团活性聚合物对提高采收率影响的研究

摘要 由于聚合物和表面活性剂的特性，活性聚合物作为油田开发中一种提高采收率的技术受到越来越多的关注。接枝在聚合物支链上的不同类型的活性官能团对活性聚合物的驱油性能有不同的影响。在本文中，活性聚合物的分子大小和粘度的测定通过散射仪和流变仪进行表征，以检测膨胀扫描体积能力。并使用徕卡显微镜评估活性聚合物的乳化性能，证实了油清扫效率。结果表明，I 型活性聚合物具有更大的分子尺寸和更强的粘度，这是一种用于扩大扫描体积的剖面控制系统。III型活性聚合物的乳化性能更稳定，适用于提高油污清洁效率。研究结果揭示了活性聚合物在油田开发中提高采收率的应用前景。