Study on aerobic corrosion characteristics of gas injection pipe wall in oil field under dry / wet interaction condition

Abstract

By studying the corrosion behavior of oilfield pipelines in different oxygen content and corrosive medium under simulated ambient air/air foam flooding environment, the dry/wet interaction between the surface and the interface of the service casing is caused by the air displacement/air foam flooding, which greatly aggravates the aerobic corrosion process. The corrosion process changed from localized corrosion to uniform corrosion with the increase in dry and wet cycles. Pitting corrosion occurs in the early stages of dry and wet cycles, and the increase in chloride concentration and oxygen content will accelerate the initiation and development of pitting.