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Abstract Asset integrity is critical for ensuring safe and continuous operations in the oil and gas industry, where corrosion remains a major threat to structural reliability. Polymer based coatings such as epoxy and polyurethane are widely used to protect steel structures from corrosion, however their performance may deteriorate under harsh environmental conditions. Recent advancements have shown that incorporating nanomaterials like graphene into polymer coatings can significantly enhance their barrier properties. This study investigates the effect of graphene incorporation into various epoxy-based coatings for different applications including atmospheric, splash zone, and zinc-rich systems which is aimed to improve corrosion resistance. Laboratory evaluations were performed using electrochemical impedance spectroscopy (EIS), pull off salt spray exposure and pull off adhesion test complemented by field trials on actual asset structures. Performance monitoring after 12 month of exposure was conducted to ensure the coating performing well in actual condition. The results demonstrate that graphene-enhanced coatings provide more than a 50% improvement in corrosion-protection performance, with a pronounced reduction in rust creepage observed after long-term salt spray exposure. The coatings also exhibited strong interfacial adhesion, with a minimum improvement of 30% and excellent water-barrier properties, as confirmed by EIS, showing impedance values at 0.01 Hz that were 1–4 orders of magnitude higher than those of the control coating. Overall, the study confirms that graphene-based coatings offer enhanced service life, reduced maintenance requirements, and lower operational costs, thereby contributing significantly to improved asset integrity.