Abstract
An oil well in an oil field had obvious deformation in the clamping area of the hydraulic clamp of the oil pipe during the string lifting of the wellbore dredging operation. In order to analyze the causes of tubing flattening, the author carried out macro morphology observation and analysis, geometric dimension measurement and nondestructive testing, and carried out chemical composition analysis, mechanical property test, metallographic structure analysis and energy spectrum analysis. The results show that the chemical composition, tensile properties and impact properties of the flattened tubing meet the standard requirements, and the metallographic structure is normal. The reason why the oil pipe is flattened is due to the excessive clamping force of the hydraulic tong during the lifting of the oil pipe. It is suggested to standardize the on-site tubing tripping operation and strengthen the product quality control of tubing entering the well. To prevent similar tubing failure from happening again.
Copyright 2022, IFEDC Organizing Committee.
This paper was prepared for presentation at the 2022 International Field Exploration and Development Conference in Xi’an, China, 16-18 November 2022.
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Wang, S., Liu, Y., Xia, Xh., Yang, C., Wu, J. (2023). Cause Analysis of Tubing Flattening in an Oil Well. In: Lin, J. (eds) Proceedings of the International Field Exploration and Development Conference 2022. IFEDC 2022. Springer Series in Geomechanics and Geoengineering. Springer, Singapore. https://doi.org/10.1007/978-981-99-1964-2_295
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DOI: https://doi.org/10.1007/978-981-99-1964-2_295
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