Sealing Structure Design and Analysis of Non-API Pipe Connection

Zhi Qian Xu; Xiang Zhen Yan; Xiu Juan Yang

doi:10.4028/www.scientific.net/AMM.34-35.811

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 34-35Sealing Structure Design and Analysis of Non-API...

Sealing Structure Design and Analysis of Non-API Pipe Connection

Abstract:

In this paper, the main design parameters of seal structure for non-API pipe connection are studied. First, as the total contact pressure consists of the radial preload generated by interference fit and the radial pressure caused by gas pressure in pipe, the variation laws of their values changing with the sealing diameter are analyzed. The sealing diameter value which maximizes the total contact pressure can be obtained from the derivation formula for calculating the total contact pressure. Second, considering the yield condition of pipe connection under the internal and the external pressures, the minimum wall thickness of the seal structure is derived. Then the cone angle is calculated by the sealing length and the minimum wall thickness known. Finally, take the 7in casing connection for example, the main design parameters are calculated by the above analysis.

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Periodical:

Applied Mechanics and Materials (Volumes 34-35)

Pages:

811-814

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.34-35.811

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Online since:

October 2010

Authors:

Zhi Qian Xu, Xiang Zhen Yan, Xiu Juan Yang

Keywords:

Contact Pressure, High-Pressure Gas Well, Non-API, Pipe Connection, Sealing Structure

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References

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