FEM Analysis of Plug Packer Based on the Model of Mooney-Rivlin

Zhang, Ce; Zhang, Shi Min; Geng, Dai; Zheng, Jianming; Fan, Wen Bin

doi:10.4028/www.scientific.net/amr.201-203.326

Cited by 4 publications

(3 citation statements)

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“…For incompressible rubber materials, I 3 = λ 1 2 λ 2 2 λ 3 2 = 1. The Mooney-Rivlin two-parameter model was used, therefore, N is taken as 1, and the model constitutive relation is shown in Equation (3) [24]:…”

Section: Mooney-rivlin Constitutive Model Of O-ringmentioning

confidence: 99%

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Structural Analysis and Experimental Study on the Spherical Seal of a Subsea Connector Based on a Non-Standard O-Ring Seal

Liu

Yun

Jiao

et al. 2022

JMSE

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Underwater oil and gas pipelines are prone to alignment differences and angle offsets during docking, and the spherical flange connector can address this problem. Its main function is to enable compensation of the different angles of the pipeline during docking and to apply a non-standard spherical sealing structure using O-rings to the connection. In this paper, the study of a spherical sealing structure using O-rings was based on a spherical structural model of the connector. The Mooney–Rivlin constitutive equation and material parameters of the O-ring were determined according to nonlinear theory. The structure of the non-standard spherical sealing groove was designed and analysed with reference to the standard sealing groove, the calculation expression of the spherical groove specific size was deduced, and the width and depth of the groove were determined. A finite element analysis of the non-standard O-ring sealing structure was carried out using ANSYS Workbench software; the effects of different pressures and compression ratios on the O-ring sealing performance were analysed and studied in terms of von Mises stress, contact pressure and contact width of different contact surfaces so as to determine a more reasonable compression ratio in the sealing structure. Finally, the theoretical analysis of the non-standard spherical sealing structure using O-rings was validated by testing, and it was proven that it could maintain a good seal under high pressure.

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Section: Mooney-rivlin Constitutive Model Of O-ringmentioning

confidence: 99%

“…-Rivlin two-parameter model was used, therefore, N is taken as 1, and the model constitutive relation is shown in Equation (3)[24]:…”

mentioning

confidence: 99%

Structural Analysis and Experimental Study on the Spherical Seal of a Subsea Connector Based on a Non-Standard O-Ring Seal

Liu

Yun

Jiao

et al. 2022

JMSE

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“…With the rapid development of computer technology, numerical simulation technology is more and more used in the study of rubber sealing performance. Li and Zhang 13,14 analysed the sealing behaviour of the packer under sealed condition using the finite element (FE) software. The Cp between the rubber and the well wall was used as an evaluation index of the sealing ability of the packer.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of sealing performance of a compression packer at high temperature

Zheng

Fei

2022

Science Progress

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Rubber is the key component of a compression packer, which directly affects the success or failure of seals. Presently, the contact stress between the rubber and borehole walls is used as the main evaluation criterion for the sealing ability of the rubber of the compression packer. However, this evaluation criterion is imperfect. This study establishes the sealing performance and reliability evaluation system of a compression packer at 120°C. Considering the influence of time and temperature on the mechanical characteristics of rubber materials, the international advanced test technology was used to complete the uniaxial, planar and biaxial tensile tests and stress relaxation test for hydrogenated nitrile butadiene rubber (HNBR) of a compression packer under high temperature. Next, the hyperelastic and viscoelastic constitutive models of rubber materials based on high-temperature test data were established. Comprehensive sealing performance and reliability evaluation system for the compression packer rubber with compression rate, linear pressure, surface pressure and sealing performance coefficient were proposed. The evaluation system tested the rubber's stress relaxation effect on the rubber's sealing performance. The establishment of the evaluation system improved the shortcomings of the current packer-sealing performance evaluation system and provided a theoretical basis for the design and optimisation of the key structure of the packer-sealing system. Besides, based on the evaluation system, a platform for automatic structure simulation analysis and optimisation design of packer sealing system was developed and successfully applied to the actual design and optimisation process of packer. The system can effectively predict the sealing ability of the packer and guide field applications of the packer.

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