温度对S135钢和G105钢在CO<sub>2</sub>/H<sub>2</sub>S共存体系中腐蚀行为的影响

高科超; 尚锁贵; 张智; 高强勇; 马金鑫; 刘婉颖

doi:DOI: 10.11973/jxgccl202303005

温度对S135钢和G105钢在CO₂/H₂S共存体系中腐蚀行为的影响

1. 中海石油(中国)有限公司天津分公司, 天津 300459;
2. 西南石油大学油气藏地质及开发工程国家重点实验室, 成都 610500;
3. 西南石油大学新能源与材料学院, 成都 610500

基金项目:

中海石油(中国)有限公司天津分公司横向项目(CCL2021TJT0NST0777)

详细信息

作者简介:
高科超(1983-),男,天津人,高级工程师,硕士

通讯作者:
刘婉颖

中图分类号: TG172
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- 文章访问数: 2
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- PDF下载量: 2
出版历程
- 收稿日期: 2022-01-02
- 修回日期: 2022-11-27
- 刊出日期: 2023-03-19

Effect of Temperature on Corrosion Behavior of S135 Steel and G105 Steel in CO₂/H₂S Coexisting System

1. Exploration Department of Tianjin Branch of CNOOC (China), Limited, Tianjin 300459, China;
2. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China;
3. School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, China

摘要

摘要: 在气体分压分别为20,0.1 MPa的CO₂/H₂S共存模拟油田地层水中,利用高温高压釜在不同温度(室温、100℃、180℃)下对S135钢和G105钢进行腐蚀试验,研究了温度对2种钢腐蚀行为的影响。结果表明:100℃下S135钢和G105钢的腐蚀速率最大,分别为0.846 3 mm·a^-1和0.850 0 mm·a^-1,180℃下的腐蚀速率最小,分别为0.229 1 mm·a^-1和0.230 9 mm·a^-1;100℃下钢表面腐蚀产物主要为FeCO₃和FeS,此温度下CO₂为腐蚀主控因素,室温和180℃下的腐蚀产物主要为FeS,H₂S为腐蚀主控因素。
- 温度 /
- S135钢 /
- G105钢 /
- CO₂/H₂S共存环境 /
- 地层水 /
- 腐蚀行为
Abstract: The corrosion tests of S135 steel and G105 steel were carried out by high temperature autoclaves at different temperatures (room temperature, 100 ℃, 180 ℃) in the simulated oil field formation water coexisted CO₂/H₂S gas with partial pressure of 20, 0.1 MPa, respectively. The influence of temperature on the corrosion behavior of the two steels was studied. The results show that the corrosion rate of S135 steel and G105 steel was the biggest at 100 ℃, reaching 0.846 3, 0.850 0 mm·a^-1, respectively, while that at 180 ℃ was the smallest of 0.229 1, 0.230 9 mm·a^-1, respectively. At 100 ℃, the corrosion products on the steel surface were mainly FeCO₃ and FeS, and CO₂ was the main controlling factor for corrosion. At the room temperature and 180 ℃, the corrosion products were mainly FeS, and H₂S was the main controlling factor for corrosion.
- temperature /
- S135 steel /
- G105 steel /
- CO₂/H₂S coexisting environment /
- formation water /
- corrosion behavior

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