Investigation of Offshore pipeline leak and maintenance cost allocation

Pipelines are vital part of modern infrastructure, transporting essential resources such as gas, oil, and water over long distances. To enhance uninterrupted production, pipeline technology has experience major improvements or advances. Obviously, the advancement is not devoid of pipe leakage, resulting from both control and uncontrol factors, including corrosion, damage, and natural disasters, resulting in significant economic, environmental, and social impacts. Hence, resource allocation for pipeline leaked repair and replacement is a critical aspect of ensuring resilience and reliability of pipeline networks. This study investigates offshore pipeline leak and maintenance cost. Regression analysis and analysis of variance were used to analyze maintenance cost, leak growth model was used to determine the leak growth rate. Leak growth rate was found to be 0.20 mm per hour. Leak increased from 0.5mm to 1.35mm in five hours. The volume of leaked was 4.5557m3 in 5 hours, which represent revenue loss of about 1834 dollars in five hours. The leak flow rate was 13.94 bbl/day. The total repair cost during the period investigated was 81, 637.9 naira, while the total replacement cost was 216,197.44 naira. The expected economic effect for equipment for five years period was found to be N352,800,000.00. The coefficient of determination was R-square 99.98%. Replacement cost of leaked pipeline has a significant effect on maintenance cost.