The service environment of oil and gas gathering pipelines becoming more and more complex and harsh, resulting in frequent failure, which not only causes the loss of oil and gas resources, but also the environmental and safety issues. Therefore, this paper focuses on the internal corrosion characteristics and most concerned issues of the oil and gas gathering pipelines and its mitigation measures. Firstly, several typical corrosion-induced failures of oil and gas gathering pipelines are introduced, moreover, the internal corrosion characteristics and advanced understanding of corrosion causes and mechanisms are analyzed. Then, internal corrosion control techniques including inhibitor, coating, clad pipe, non-metallic pipe, and life extension techniques including PE pipe insertion lining repair, air pressure extrusion coating repair, local repair and reinforcement were introduced.

Subject
Piping, Perforation, Corrosion rate, Welding, Pipelines, Oil and gas, Mechanical failure, Composites, Internal coatings, Repair, Corrosion inhibitors, Oilfields, Carbon steel
Keywords:
gathering pipelines, corrosion perforation, inhibitor, coating, clad pipe, non-metallic pipe, PE pipe insertion lining, air pressure extrusion coating repair, local repair and reinforcement
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2022
Association for Materials Protection and Performance (AMPP)
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