CRACK PROPAGATION BEHAVIOR OF OIL WELL TUBING STEEL UNDER CORROSION FATIGUE LOADING IN CO<sub>2</sub>-CL-CORROSIVE ENVIRONMENT

LI Zhen; WANG WenTao; WANG JianCai; CUI Lu; DOU YiHua

doi:10.16579/j.issn.1001.9669.2016.05.010

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CRACK PROPAGATION BEHAVIOR OF OIL WELL TUBING STEEL UNDER CORROSION FATIGUE LOADING IN CO₂-CL-CORROSIVE ENVIRONMENT

更新时间：2022-09-22

- CRACK PROPAGATION BEHAVIOR OF OIL WELL TUBING STEEL UNDER CORROSION FATIGUE LOADING IN CO₂-CL-CORROSIVE ENVIRONMENT
- Journal of Mechanical Strength Vol. 38, Issue 5, Pages: 957-961(2016)
- 作者机构：
  
  1. 西安石油大学机械工程学院
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2016.05.010
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LI Zhen, WANG WenTao, WANG JianCai, et al. CRACK PROPAGATION BEHAVIOR OF OIL WELL TUBING STEEL UNDER CORROSION FATIGUE LOADING IN CO₂-CL-CORROSIVE ENVIRONMENT. [J]. 38(5):957-961(2016)
DOI：

LI Zhen, WANG WenTao, WANG JianCai, et al. CRACK PROPAGATION BEHAVIOR OF OIL WELL TUBING STEEL UNDER CORROSION FATIGUE LOADING IN CO₂-CL-CORROSIVE ENVIRONMENT. [J]. 38(5):957-961(2016) DOI： 10.16579/j.issn.1001.9669.2016.05.010.

摘要

油管服役环境中常存在Cl~-、CO,2,等腐蚀性介质,它们会导致油管壁面产生点蚀坑。这些点蚀坑成为受交变载荷油管发生疲劳损伤的疲劳源。以现场用油管钢13Cr为研究对象,选取CO,2,-Cl~-腐蚀介质为环境工况,在标准CT试样上进行腐蚀疲劳裂纹扩展实验。分别测量大气环境下、含有Cl~-溶液中及含有CO,2,-Cl~-共存环境下的油管钢13Cr的腐蚀疲劳裂纹扩展速率。对比分析这三种腐蚀工况下油管钢13Cr疲劳裂纹扩展速率的变化规律。结合断口形貌分析,探索CO,2,-Cl~-共存腐蚀介质中,油管钢13Cr的腐蚀疲劳失效机理。

Abstract

Corrosion medium such as CO,2,-Cl-causing corrosion pits in the pipe wall exist usually in the service environment of well tubing. These pits will become the fatigue source of the fatigue damage of oil tubing under cyclic loading. In this paper,tubing steel of 13 Cr used in oil well is selected as research object,and CO,2,-Cl- corrosive environment is selected for simulating the service condition of tubing. In the corrosive environment,fatigue experiments are performed on standard CT specimens to study crack propagation behavior of 13 Cr steel. Crack propagation rate of the 13 Cr steel under cyclic loading is measured in air environment,in Cl- environment and in CO,2,-Cl- corrosive environment respectively. The change of corrosion fatigue crack propagation rate under the three environment condition is carried out. With the observation of fracture morphology, the mechanism of corrosion fatigue failure of the 13 Cr steel in the CO,2,-Cl- corrosive environment is analyzed.

关键词

腐蚀疲劳裂纹扩展Cl-点蚀CO2腐蚀

Keywords

Corrosion fatigueCrack propagationCl-pittingCO2 corrosion

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CRACK PROPAGATION BEHAVIOR OF OIL WELL TUBING STEEL UNDER CORROSION FATIGUE LOADING IN CO2-CL-CORROSIVE ENVIRONMENT

DOI：10.16579/j.issn.1001.9669.2016.05.010

摘要

Abstract

关键词

Keywords

references

CRACK PROPAGATION BEHAVIOR OF OIL WELL TUBING STEEL UNDER CORROSION FATIGUE LOADING IN CO₂-CL-CORROSIVE ENVIRONMENT