驱油两亲聚合物及其分离组分的乳化规律研究

利用稳定性分析仪、光学显微镜、激光粒度分析仪、界面张力仪及流变仪研究驱油两亲聚合物及其分离组分的乳化规律及机制。结果表明:驱油两亲聚合物及其分离组分的分子结构相似,但疏水基团含量不同;大分子组分相比小分子组分界面活性较弱,形成乳化液的粒径较大,但其体系黏弹性更高,致使乳化液液滴迁移速率降低,稳定性增强;驱油两亲聚合物在不同组分的协同作用下,界面活性较高,形成乳化液的粒径最小,体系黏弹性适中且稳定,因此乳化液液滴的迁移速率最低,稳定性最高。

Study on the emulsification rules of an amphiphilic polymer and its separated components for oil displacement

The emulsification and mechanism of an amphiphilic polymer and its separated components for oil displacement were studied by stability analyzer, opticle microscope, laser granulometer, interface tensiometer and rheometer. The results show that the molecular structures of the amphiphilic polymer and its different separated components are similar, but the contents of hydrophobic groups in different components are different. Compared with the small molecule component, the macromolecule component has weaker interfacial activity and larger droplet size of emulsion. However, the droplet migration rate is lower due to its high viscoelasticity, which improvesthe stability of emulsion. Under the synergistic effect of different components, the amphiphilic polymer for oil displacement has strong interfacial activity and its emulsion has the smallest droplet size. And the viscoelasticity of the emulsion is moderate and stable, which caues the lowest droplet migration rate and highest stability of emulsion.