调驱用聚合物微球存在的两个问题及其对策

发布时间：2019-03-12 18:27

【摘要】：与其他调驱剂相比,聚合物微球具有运移、封堵、弹性变形、再运移、再封堵的特点,已在室内实验和现场应用中取得较好效果,但也存在粒径的可控性和力学参数缺失等两方面问题。聚合物微球粒径和力学参数对其调驱结果影响很大,因此对可控聚合精确控制微球粒径和锥形毛细管微观力学法与其他方法结合确定微球力学性质的可行性进行了研究。结果表明:使用原子转移自由基聚合方法可以得到粒径可控的微球,锥形毛细管微观力学法与原子力显微技术相结合可以测定出微球的杨氏模量、弹性模量、剪切模量、泊松比等力学参数。
[Abstract]:Compared with other flooding agents, polymer microspheres have the characteristics of migration, plugging, elastic deformation, re-migration and re-plugging, and have achieved better results in laboratory experiments and field applications. However, there are two problems, such as controllability of particle size and lack of mechanical parameters. The particle size and mechanical parameters of polymer microspheres have a great influence on the displacement control results. Therefore, the feasibility of precision controlled polymerization and the feasibility of combining micro-mechanical method with other methods to determine the mechanical properties of polymer microspheres were studied in this paper. The results show that the microsphere with controllable particle size can be obtained by atom transfer radical polymerization. The Young's modulus, elastic modulus and shear modulus of the microspheres can be determined by the combination of conical capillary micro-mechanics and atomic force microscopy. Poisson's ratio and other mechanical parameters.
【作者单位】：重庆科技学院化学化工学院;
【基金】：国家自然科学基金“基于ATRP制备核壳结构的微球及其在孔隙介质中的运移行为研究”(51504050) 重庆市教委科学技术研究项目“缔合型聚合物在孔隙介质中的有效黏度及驱油应用界限研究”(KJ1601305)
【分类号】：TE357.46

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