Effect of Water Cut on the Localized Corrosion Behavior of P110 Tube Steel in Supercritical CO2/Oil/Water Environment

被引：28

作者：

Sun, Jianbo ^{[1
]}

Sun, Chong ^{[1
]}

Zhang, Guoan ^{[2
]}

Zhao, Weimin ^{[1
]}

Wang, Yong ^{[1
]}

机构：

[1] China Univ Petr, Sch Mech & Elect Engn, Qingdao 266580, Peoples R China

[2] Huazhong Univ Sci & Technol, Sch Chem & Chem Engn, Wuhan 430074, Peoples R China

来源：

CORROSION | 2016年 / 72卷 / 11期

基金：

中国国家自然科学基金;

关键词：

corrosion scale; crude oil; localized corrosion; P110; steel; supercritical CO2 corrosion; water cut; CARBON-DIOXIDE CORROSION; PIPELINE STEEL; CO2; CORROSION; CRUDE-OIL; MECHANISM; CHROMIUM;

D O I：

10.5006/1926

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Corrosion behavior of P110 tube steel was investigated in supercritical CO2/oil/water environment. A corresponding corrosion mechanism was proposed based on the understanding of the formation of localized corrosion. The results show that uniform corrosion occurs within the range of 0% to 30% water cuts, with the corrosion rate much lower than 1 x 10(-2) mm/y. When water cut increases to 50%, the corrosion rate of P110 steel increases rapidly and the corrosion morphology changes from uniform corrosion to localized corrosion. Crude oil in low proportions causes considerable localized damage to the steel as a result of the inhomogeneous wetting of steel surface by crude oil in a CO2/oil/water system.

引用

页码：1470 / 1482

页数：13