Research Progress on the Corrosion and Protection of Pipeline Steels in CO2 and H2S Environments

Abstract

With the development of global oil and gas industry expands， pipeline steel corrosion in CO2 and H2S environments has become a significant impediment to oil and gas industry growth.The corrosion of pipeline steel is gradually receiving attention from scholars at home and abroad.In this paper， the corrosion behavior and mechanisms of pipeline steels under individual CO2， H2S， and combined CO2-H2S systems were summarized.It was highlighted that the partial pressures ratio of CO2 and H2S influences the extent of pipeline steel corrosion， with recent findings indicating that the critical value of CO2 and H2S partial pressures ratio was temperature-dependent.For the complex environment where CO2 and H2S coexist， this paper mainly introduced the protection technology of corrosion inhibitors and the optimization of corrosion resistant pipes to slow down the corrosion of pipeline steel.Furthermore，the future development direction in CO2 and H2S coexistence systems as well as more economical and effective anti-corrosion measures was prospected.

Keywords

• co2|h2s|corrosion mechanism|corrosion inhibitor|pipe material