Description
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Scale formation in unconventional wells, particularly in the reservoir, wellbore, and well equipment, presents significant challenges following hydraulic fracturing and throughout the well's lifecycle, often leading to accelerated production decline and increased maintenance costs. This study investigates the application of highly concentrated microencapsulated scale inhibitors delivered with frac sand to mitigate these issues. Water analysis indicated scaling potential, and significant scale deposition was observed in previously completed untreated wells. The microencapsulation technique allows for a controlled and sustained release of the inhibitor, effectively preventing scale formation over extended periods. Field data from trialed wells demonstrated that those wells treated with highly concentrated microencapsulated scale inhibitors exhibited a 25% higher production rate compared to wells treated with traditional liquid chemical inhibitors. This innovative approach provides a promising solution for effective scale management in unconventional wells, enhancing production efficiency and reducing operational expenses