| 气举作业中连续油管腐蚀断裂原因 |
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| 引用本文： | 郑华安,闫化云,佟琳,谢思宇,李飞. 气举作业中连续油管腐蚀断裂原因[J]. 腐蚀与防护, 2011, 0(9): 758-760 |
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| 作者姓名： | 郑华安 闫化云 佟琳 谢思宇 李飞 |
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| 作者单位： | 中海石油(中国)有限公司湛江分公司;中海油能源发展股份有限公司上海采油技术服务分公司;西安摩尔石油工程实验室; |
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| 摘 要： | 某海上气井连续氮气气举作业61．5h后，发生连续油管断裂，观察发现连续油管外壁腐蚀严重。通过宏观和微观分析、理化性能检验、X射线衍射和模拟试验，对腐蚀油管进行了失效分析。结果表明，气举作业所用氮气携带的O2和井内CO2共同作用造成了连续油管腐蚀破坏，氧腐蚀是造成短时间内连续油管严重腐蚀的主要因素。针对此结论和现场工况，...
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| 关 键 词： | 氮气气举 连续油管 氧腐蚀 二氧化碳腐蚀 |
Corrosion Cracking Cause of Coiled Tubing in Gas Lift Operation |
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| ZHENG Hua-an,YAN Hua-yun,TONG Lin,XIE Si-yu,LI Fei. Corrosion Cracking Cause of Coiled Tubing in Gas Lift Operation[J]. Corrosion & Protection, 2011, 0(9): 758-760 |
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| Authors: | ZHENG Hua-an YAN Hua-yun TONG Lin XIE Si-yu LI Fei |
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| Affiliation: | ZHENG Hua-an~1,YAN Hua-yun~2,TONG Lin~3,XIE Si-yu~1,LI Fei~2 (1.Zhanjiang Branch of CNOOC Ltd.,Zhanjiang 524057,China,2.CNOOC Energy Technology & Services Shanghai Oilfield Technology Services Branch,Shanghai 200000,3.Xi'an Maurer Petroleum Engineering Laboratory,Xi'an 710065,China) |
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| Abstract: | A coiled tubing in an offshore gas well cracked and suffered serious corrosion after nitrogen gas-lift operation for 61.5 h.The failure cause of the tubing was studied by macro and micro analysis,physical and chemical properties testing,X-ray energy spectrum analysis and stimulated corrosion test.The results showed that the combined effect of O_2 carried by N_2 and CO_2 in the wet gas well corroded the coiled tubing.The O_2 corrosion was the main reason of the corrosion of coiled tubing in short time.Accord... |
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| Keywords: | nitrogen gas-lift coiled tubing O_2 corrosion CO_2 corrosion |
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