Analysis of N80 BTC Downhole Tubing Corrosion

This article reports on an analysis of N80 BTC downhole tubing corrosion based on macro- and micro-corrosion morphology analysis and material testing. It concludes that the tubing failure was caused by erosion-corrosion. Using flow calculation software, the authors further determined that the erosio...

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Bibliographic Details
Published inMaterials Performance Vol. 43; no. 10; pp. 46 - 49
Main Authors Lu, Shuanlu, Zhang, Guozheng, Lu, Mingxu, Zhao, Guoxian, Zhang, Mingyuan
Format Magazine Article Trade Publication Article
LanguageEnglish
Published Houston NACE International 01.10.2004
Subjects
Analysis
Corrosion
Pipes
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Summary:This article reports on an analysis of N80 BTC downhole tubing corrosion based on macro- and micro-corrosion morphology analysis and material testing. It concludes that the tubing failure was caused by erosion-corrosion. Using flow calculation software, the authors further determined that the erosion-corrosion was caused by the highly disturbed liquid and high shear stress at locations subject to abrupt geometric change. After 4 years of service, corrosion was found on the internal surfaces of two adjacent sections of N80 BTC tubing within a coupling. The corrosion of the field end was more severe than that of the mill end. The well is for oil extraction with an electric submersible pump.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:0094-1492