Preparation and Performance Evaluation of P(St-AM) Microencapsulated Gel-Breaking Agents with Core-Shell Structure

The article presents the preparation and performance evaluation of P(St-AM) microencapsulated gel-breaking agents with a core-shell structure, designed to address the challenges of polymer gel residue in oilfield production. The authors synthesize these microcapsules using polyacrylamide and polystyrene, aiming to achieve controlled and gradual release of the gel-breaking agent. The study includes detailed methods for synthesis, characterization techniques such as SEM, infrared spectroscopy, and thermogravimetric analysis, as well as evaluations of the microcapsules' effective drug content and gel-breaking performance. The results demonstrate the successful synthesis of microcapsules with a regular spherical shape and enhanced thermal stability, showcasing the potential of this novel method in optimizing oilfield production processes.