Corrosion sensitivity analysis of pipelines in CO 2 and H 2 S coexisting environment in the South China Sea
Source abstract
Abstract
Abstract The purpose of the present work is to investigate the corrosion sensitivity of pipelines of oil and gas wells under complex environmental conditions (i.e., the primary and secondary relationship of the influence of different environmental factors on pipeline corrosion). The orthogonal experiment is introduced to design the experimental scheme. The weight loss method is employed to analyze the average corrosion rate of N80 steel under different environmental conditions. And then the scanning electron microscope is used to explore the surface and cross-section corrosion morphology of the corrosion products. Besides, the components of corrosion products are obtained by the energy spectrum analysis. The research results indicate that H 2 S partial pressure is the most sensitive factor to the corrosion of N80 pipeline and the influence of CO 2 partial pressure on corrosion of N80 pipeline is weaker than Cl − concentration and temperature in the South China Sea. The study can help the oil drilling engineering search for direct and effective corrosion inhibitors under complex environmental conditions.
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Research context
OpenAlex topics: Corrosion Behavior and Inhibition · Hydrogen embrittlement and corrosion behaviors in metals · Concrete Corrosion and Durability
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Mechanical Engineering , Southwest Petroleum University , Chengdu , 610500 , China
Sichuan Science and Technology Resource Sharing Service Platform of Oil and Gas Equipment Technology , Chengdu , China
CNOOC EnerTech-Safety & Environmental Protection Co. , Zhanjiang , China
References (39)
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