Tubing String Thread Sealing Surfaces Damage Evaluation Based on Acoustic Elasticity Theory

Jian Jun Wang; Jian Hua Sun; Shang Yu Yang; Yao Rong Feng; Kai Lin

doi:10.4028/www.scientific.net/MSF.944.828

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HomeMaterials Science ForumMaterials Science Forum Vol. 944Tubing String Thread Sealing Surfaces Damage...

Tubing String Thread Sealing Surfaces Damage Evaluation Based on Acoustic Elasticity Theory

Abstract:

During the processing of tubing premium threaded made up, the degree of the thread sealing surface intactness will directly affect the sealing performance of the string. Nevertheless, there are some difficulties to detect the damage of the engaged sealing surface effectively. In the present study the sealing surface damage was judged by the sealing surface contact stress’s relative changes according to the acoustic elasticity theory,. At the same time, the wear defects generated at the tubing sealing surface, during the tubing made up, contrasted with the wear and unworn surface roughness of coupling ultrasonic detected about the sealing surface. The results showed that with the acoustic amplitude evaluated the sealing contact stress was susceptible to the influence of surface roughness of coupling. But the reflection wave with the center frequency on the sealing surface characterization of the contact stress could avoid this problem effectively.

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Periodical:

Materials Science Forum (Volume 944)

Pages:

828-834

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.944.828

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Online since:

January 2019

Authors:

Jian Jun Wang*, Jian Hua Sun, Shang Yu Yang, Yao Rong Feng, Kai Lin

Keywords:

Acoustic Wave, Contact Pressure, Frequency, Sealing Surface, Thread, Tubing

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