Effect of CO<sub>2</sub>/H<sub>2</sub>S and Applied Stress on Corrosion Behavior of 15Cr Tubing in Oil Field Environment
The corrosion behavior of a 15Cr-6Ni-2Mo martensitic stainless steel (15Cr stainless steel) in a CO<sub>2</sub>/H<sub>2</sub>S environment was investigated by conducting high-temperature/high-pressure immersion tests combined with scanning electron microscopy and metallograph...
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MDPI AG
2020-03-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/10/3/409 |
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| author | Xuehui Zhao Wei Huang Guoping Li Yaorong Feng Jianxun Zhang |
| author_facet | Xuehui Zhao Wei Huang Guoping Li Yaorong Feng Jianxun Zhang |
| author_sort | Xuehui Zhao |
| collection | DOAJ |
| description | The corrosion behavior of a 15Cr-6Ni-2Mo martensitic stainless steel (15Cr stainless steel) in a CO<sub>2</sub>/H<sub>2</sub>S environment was investigated by conducting high-temperature/high-pressure immersion tests combined with scanning electron microscopy and metallographic microscopy. The presence of H<sub>2</sub>S decreased the corrosion resistance of the 15Cr tubing steel. The critical H<sub>2</sub>S partial pressure (<i>P</i><sub>H2S</sub>) for stress corrosion cracking in the 15Cr tubing steel in the simulated oil field environment with a CO<sub>2</sub> partial pressure of 4 MPa and an applied stress of 80% <i>σ</i><sub>s</sub> was identified. The 15Cr tubing steel mainly suffered uniform corrosion with no pitting and cracking when the <i>P</i><sub>H2S</sub> was below 0.5 MPa. When the <i>P</i><sub>H2S</sub> increased to 1 MPa and the test temperature was 150 °C, the pitting and cracking sensitivity increased. The stress corrosion cracking at a higher <i>P</i><sub>H2S</sub> is attributed to the sulfide-induced brittle fracture. |
| first_indexed | 2024-12-14T09:39:01Z |
| format | Article |
| id | doaj.art-9170efb097c34824b8f1ba0465d73bcf |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-14T09:39:01Z |
| publishDate | 2020-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-9170efb097c34824b8f1ba0465d73bcf2022-12-21T23:07:50ZengMDPI AGMetals2075-47012020-03-0110340910.3390/met10030409met10030409Effect of CO<sub>2</sub>/H<sub>2</sub>S and Applied Stress on Corrosion Behavior of 15Cr Tubing in Oil Field EnvironmentXuehui Zhao0Wei Huang1Guoping Li2Yaorong Feng3Jianxun Zhang4School of Materials Science and Engineering, State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, ChinaOil and Gas Engineering Research Institute of Petro China Changqing Oilfield Company, Xi’an 710077, ChinaResearch Institute of drilling and Production Technology of Qinghai Oilfield, Dun Huang 736202, ChinaState Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, CNPC Tubular Goods Research Institute, Xi’an 710077, ChinaSchool of Materials Science and Engineering, State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, ChinaThe corrosion behavior of a 15Cr-6Ni-2Mo martensitic stainless steel (15Cr stainless steel) in a CO<sub>2</sub>/H<sub>2</sub>S environment was investigated by conducting high-temperature/high-pressure immersion tests combined with scanning electron microscopy and metallographic microscopy. The presence of H<sub>2</sub>S decreased the corrosion resistance of the 15Cr tubing steel. The critical H<sub>2</sub>S partial pressure (<i>P</i><sub>H2S</sub>) for stress corrosion cracking in the 15Cr tubing steel in the simulated oil field environment with a CO<sub>2</sub> partial pressure of 4 MPa and an applied stress of 80% <i>σ</i><sub>s</sub> was identified. The 15Cr tubing steel mainly suffered uniform corrosion with no pitting and cracking when the <i>P</i><sub>H2S</sub> was below 0.5 MPa. When the <i>P</i><sub>H2S</sub> increased to 1 MPa and the test temperature was 150 °C, the pitting and cracking sensitivity increased. The stress corrosion cracking at a higher <i>P</i><sub>H2S</sub> is attributed to the sulfide-induced brittle fracture.https://www.mdpi.com/2075-4701/10/3/409tubing steelstress corrosion crackinghigh-temperature/high-pressurepitting corrosion |
| spellingShingle | Xuehui Zhao Wei Huang Guoping Li Yaorong Feng Jianxun Zhang Effect of CO<sub>2</sub>/H<sub>2</sub>S and Applied Stress on Corrosion Behavior of 15Cr Tubing in Oil Field Environment Metals tubing steel stress corrosion cracking high-temperature/high-pressure pitting corrosion |
| title | Effect of CO<sub>2</sub>/H<sub>2</sub>S and Applied Stress on Corrosion Behavior of 15Cr Tubing in Oil Field Environment |
| title_full | Effect of CO<sub>2</sub>/H<sub>2</sub>S and Applied Stress on Corrosion Behavior of 15Cr Tubing in Oil Field Environment |
| title_fullStr | Effect of CO<sub>2</sub>/H<sub>2</sub>S and Applied Stress on Corrosion Behavior of 15Cr Tubing in Oil Field Environment |
| title_full_unstemmed | Effect of CO<sub>2</sub>/H<sub>2</sub>S and Applied Stress on Corrosion Behavior of 15Cr Tubing in Oil Field Environment |
| title_short | Effect of CO<sub>2</sub>/H<sub>2</sub>S and Applied Stress on Corrosion Behavior of 15Cr Tubing in Oil Field Environment |
| title_sort | effect of co sub 2 sub h sub 2 sub s and applied stress on corrosion behavior of 15cr tubing in oil field environment |
| topic | tubing steel stress corrosion cracking high-temperature/high-pressure pitting corrosion |
| url | https://www.mdpi.com/2075-4701/10/3/409 |
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