During petroleum exploration, the use of corrosion inhibitors is necessary to reduce equipment maintenance costs, to guarantee the operation safety, and to make process operation more robust. For this reason, the present manuscript investigates the production of polymer particles loaded with a commercial corrosion inhibitor intended for controlled release applications in oil wells. The process comprises two steps: the first step regards the water‐in‐oil (W/O) heterogeneous styrene polymerization, while the second step involves the water‐in‐oil‐in‐water (W/O/W) styrene polymerization, prepared through dispersion of the W/O emulsion obtained in the first step in an aqueous medium. The results reveal that the morphologies of the produced particles are significantly affected by the analyzed process operation variables, such as reaction time, temperature, and feed ratios. Particularly, the duration of the first reaction step strongly influences the obtained particle size distributions and the encapsulation efficiencies. Finally, it is shown that the encapsulated inhibitor is released slowly in aqueous saline media.

中文翻译：

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载有缓蚀剂的聚合物颗粒的生产，用于油井

在石油勘探期间，必须使用缓蚀剂以降低设备维护成本，保证操作安全性并使过程操作更可靠。由于这个原因，本手稿研究了负载有商用缓蚀剂的聚合物颗粒的生产，该缓蚀剂旨在用于油井中的控释应用。该过程包括两个步骤：第一步涉及油包水（W / O）均相苯乙烯聚合，而第二步涉及水包油型水（W / O / W）苯乙烯聚合，通过将第一步获得的W / O乳液分散在水性介质中制备。结果表明，所产生颗粒的形态受到分析的过程操作变量（例如反应时间，温度和进料比。特别地，第一反应步骤的持续时间强烈地影响获得的粒度分布和包封效率。最后，表明包封的抑制剂在盐水水溶液中缓慢释放。