Optimal Selection of Steel Pipes for Gathering Pipelines Transporting CO₂-contained Natural Gas

Hazards of surface corrosion to gathering pipelines induced by CO₂-contained natural gas are analyzed. Results show that partial pressure, temperature and flowrate of gas are major factors on the pipelines' CO₂ corrosion. Through design study and field application, optimal selection methods for the pipes of gathering pipelines in sour gas field and protective measures to control CO₂ corrosion are provided initially.