Corrosion Behavior of P110S Oil Pipe in Simulated Working Condition

Xiao Jun Fang; Li Liu; Zhi Gang Yang; Yong Qiang Zhang

doi:10.4028/www.scientific.net/MSF.944.815

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HomeMaterials Science ForumMaterials Science Forum Vol. 944Corrosion Behavior of P110S Oil Pipe in Simulated...

Corrosion Behavior of P110S Oil Pipe in Simulated Working Condition

Abstract:

The corrosion resistance of P110S steel in CO₂and H₂S coexistence corrosion environment under different temperature and P_CO2/P_H2S was investigated by high temperature and high pressure (HTHP) reaction kettle combined with SEM, EDS and XRD analysis methods. The stress corrosion cracking (SCC) resistance of P110S steel was studied under loading pressure of 682.2MPa (758MPa×90%) in simulated conditions after 720 hours test. The results show that the P110S steel has serious corrosion in the range of simulative temperature and H₂S partial pressure. With the increase of temperature, the corrosion rate decreases first and then increases. With the increase of H₂S partial pressure, the corrosion rate increases first and then decreases. The P110S steel has the highest corrosion rate when the temperature is 50 °C and H₂S partial pressure is 0.1%. After the anti-SCC test, the specimens did not fracture, and cracks perpendicular to the tensile stress were not found on the surface. That is, P110S has good SCC resistance in the corrosive environment.

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Periodical:

Materials Science Forum (Volume 944)

Pages:

815-820

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.944.815

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Online since:

January 2019

Authors:

Xiao Jun Fang*, Li Liu, Zhi Gang Yang, Yong Qiang Zhang

Keywords:

CO₂/H₂S Corrosion, Hydrogen Induced Cracking, P110S, Stress Corrosion Cracking

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