The use of nano-silica gel to seal cement channels and fractures is a novel application demonstrated in this work. Cementing is a crucial step in the drilling process and is vulnerable to cracking when downhole conditions vary throughout the course of a well's life. This study examines the use of micro-sized cross-linked nano-silica gel as a sealant material to reduce damaged cement sheaths. An experimental setup was used to study fluid leakage through cement channels. The effect of the cement channel size was investigated using a diameter of 0.05 inches. When the nano-silica content of the sealing gel rose from 13% to 25%, the sealing effectiveness increased from 86 to 95%. This indicates how the sealing gel's capacity to obstruct fluid flow is influenced by the amount of nano-silica present in the gel. This study suggests a novel strategy for enhancing cement zonal isolation and reducing cement failure's effects on the oil and gas sector.
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