Stress corrosion cracking behavior of buried oil and gas pipeline steel under the coexistence of magnetic field and sulfate-reducing bacteria

作     者：Jian-Yu He Fei Xie Dan Wang Guang-Xin Liu Ming Wu Yue Qin Jian-Yu He;Fei Xie;Dan Wang;Guang-Xin Liu;Ming Wu;Yue Qin

作者机构：College of Petroleum EngineeringLiaoning Petrochemical UniversityFushun113001LiaoningChina Key Laboratory of Oil and Gas Storage and Transportation Technology in Liaoning ProvinceFushun113001LiaoningChina State Key Joint Laboratory of Environment Simulation and Pollution ControlSchool of EnvironmentTsinghua UniversityBeijing100084China PipeChina West East Gas Pipeline CompanyShanghai200120China 

出 版 物：《Petroleum Science》 (石油科学（英文版）)

年 卷 期：2024年第21卷第2期

页      面：1320-1332页

核心收录：

学科分类：0820[工学-石油与天然气工程] 080706[工学-化工过程机械] 08[工学] 0807[工学-动力工程及工程热物理] 082003[工学-油气储运工程] 

基　　金：supported by the National Science Foundation of China(Grant numbers 52274062) Natural Science Foundation of Liaoning Province(Grant numbers 2022-MS-362) 

主　　题：Magnetic field Sulfate-reducing bacteria Film layer Stress corrosion cracking Oil and gas pipelines 

摘      要：Magnetic field and microorganisms are important factors influencing the stress corrosion cracking(SCC)of buried oil and gas pipelines. Once SCC occurs in buried pipelines, it will cause serious hazards to the soil environment. The SCC behavior of X80 pipeline steel under the magnetic field and sulfate-reducing bacteria(SRB) environment was investigated by immersion tests, electrochemical tests, and slow strain rate tensile(SSRT) tests. The results showed that the corrosion and SCC sensitivity of X80 steel decreased with increasing the magnetic field strength in the sterile environment. The SCC sensitivity was higher in the biotic environment inoculated with SRB, but it also decreased with increasing magnetic field strength, which was due to the magnetic field reduces microbial activity and promotes the formation of dense film layer. This work provided theoretical guidance on the prevention of SCC in pipeline steel under magnetic field and SRB coexistence.