Failure Analysis on the Collapsed Tubing of High Pressure and High Production Gas Well in the Process of Testing and Production

Abstract:

The split, fall, collapse and severe diapirism of tube body happened on one of the tubing used in the gas well of high pressure and high production in the process of the trial extraction. This paper aims to explore the reason of its occurrence through the research of the macroscopic analysis, mechanical and chemical property test and microscopic metallographic test study. The result of the research shows that the multiphase flow of gas, liquid and solid in the tubing may produced an instantaneous negative pressure and increased the possibility of the tubing being collapsed in the process of gas testing and production.Then it resulted in clogging, severe ablation, thinning wall and piercing in tube and finally the tube broke because of the low tensile strength.

• Periodical: Advanced Materials Research (Volume 1035)
• Pages: 198-203
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1035.198
• Online since: October 2014
• Authors: Ji Jun Xue, Bin Zhao*, He Zhao
• Keywords: Ablation, Gas Well of High Pressure, High Production, Tensile Strength, Tubing

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