Abstract: As the main oil and gas fields in our country enter the middle and later stages of development, the gathering and transportation pipeline system is facing increasingly severe corrosion challenges. The complex causes of pipeline corrosion include not only the effects of transportation conditions and medium composition, but also the coupled effects of multiple factors covering soil environment and material deterioration. This paper systematically analyzes the corrosion causes of oilfield gathering and transportation pipelines and proposes an anti-corrosion optimization scheme adaptable to all working conditions, achieving improvement in the protection efficiency throughout the pipeline's lifecycle. The research provides theoretical support for the safe and economic operation of gathering and transportation pipelines.

Key words: oilfield gathering and transportation pipelines, corrosion reasons, control measures