Effect of Acidizing Process on the Stress Corrosion Cracking of HP-13Cr Stainless Steel in the Ultra-depth Well Environment

被引：4

作者：

Qi, Wenlong ^{[1
]}

Zhao, Yang ^{[1
]}

Zhang, Tao ^{[1
]}

Wang, Fuhui ^{[1
]}

机构：

[1] Northeastern Univ, Shenyang Natl Lab Mat Sci, Shenyang, Peoples R China

来源：

FRONTIERS IN MATERIALS | 2021年 / 8卷 / 08期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

key word; acidification; HP-13Cr stainless steel; stress corrosion cracking; roughness; anodic dissolution; OIL-FIELD ENVIRONMENT; SUPER; 13CR; ELECTROCHEMICAL CORROSION; HIGH-TEMPERATURE; X70; STEEL; BEHAVIOR; INITIATION; NACL; PROPAGATION; PRESSURE;

D O I：

10.3389/fmats.2021.732931

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of acidizing process on the stress corrosion cracking of HP-13Cr stainless steel in the ultra-depth well environment was studied by the slow strain rate test, the electrochemical measurement, the microstructure observation, and the finite element modeling. The results indicated that the acidizing process significantly increased the stress corrosion cracking susceptibility of HP-13Cr stainless steel and induced the fracture mode to the brittle characteristic in the high temperature and CO2 pressure environment. The stress corrosion cracking susceptibility also increased with the increase of temperature and CO2 pressure. There were dense defects including pits and cracks in the fracture section from the transverse view. After the acidizing process, under tensile stress condition, the increasing roughness will cause the stress concentration and promote the local anodic dissolution, which induces the initiation of stress corrosion cracking.</p>

引用

页数：10

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