Data processing method for constitutive relation of the rubber core material in spherical blowout preventer

Xu, Daping; Yang, Yingxin; Wu, Kaisong

doi:10.1177/1687814018789523

Cited by 7 publications

(2 citation statements)

References 20 publications

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“…Xu et al (Xu et al, 2012) obtained several main failure modes of the spherical rubber core through the mechanical analysis and field use of the spherical rubber core, gave a method to improve the reliability of the rubber core and prolong its life. Xu et al (Xu et al, 2018) proposed a data processing method for the constitutive data of annular BOP with large deformation rubber core. Li (Li, 2015) analyzed the force and deformation regular pattern of rubber core under several typical working conditions, summarized the main failure modes of the rubber core, and gave a method to improve the sealing performance.…”

mentioning

confidence: 99%

Retraction: Study on sensitivity of annular BOP parameters to sealing performance in gas well snubbing service

Yang¹,

Dong

Xiang-jun³

et al. 2021

Mechanical Engineering Journal

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Annular Blowout Preventer (BOP) is the core device for snubbing service in gas wells. The wellhead can be sealed by operating the BOP. Rubber core of annular BOP is the main part of the sealing process, and its failure will cause blowout accidents and endanger the operators. Rubber core failure is mainly caused by the serious wear and fracturing damage, compared with oil well, during the snubbing service of the gas well, there is dry friction between rubber core and tubing, which is more prone to rubber core wear. Based on the Yeoh constitutive model, this paper fits the material parameters through the data measured by the rubber tensile experiment, and establishes the sealing performance evaluation model of the annular BOP based on the theory of rubber hyperelastic, large deformation theory and dynamic sealing theory. Meanwhile, compare it with the rubber core failure cases which used in field to verify the accuracy of the model. Based on these, this paper studies the influence of piston stroke, tubing size, friction coefficient between rubber core and tubing, rubber core attrition rate on sealing performance, and fitting the relationship between tubing size and piston stroke. The results show that: properly increasing the piston stroke by 2 to 3 mm will help to improve the sealing performance; when the tubing size is smaller, the rubber core is deformed too much while the seal process completed, which is easy to cause the rubber core to fracturing; friction coefficient between rubber core and tubing has no significant effect on static sealing performance; the friction coefficient less than 0.2 has little effect on the dynamic sealing performance; when the friction coefficient exceeds 0.4, the dynamic sealing performance is reduced significantly; when the wear of rubber core is within 10 mm, the sealing performance gradually decreases, but the sealing requirements can still be met. When it is more than 10 mm, it cannot meet the sealing requirements of 35 MPa. The research work in this paper has certain guiding significance for the design, selection and use of the rubber core of annular BOP.

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mentioning

confidence: 99%

Retraction: Study on sensitivity of annular BOP parameters to sealing performance in gas well snubbing service

Yang¹,

Dong

Xiang-jun³

et al. 2021

Mechanical Engineering Journal

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“…Then in terms of quality, synthetic rubber is also superior to natural rubber, including being easy to process, has perfect elasticity, is not easily heated and has high stickiness to various materials. This makes some of the natural rubber market share replaced by synthetic rubber (Setyawati et al, 2014;Xu et al, 2018).…”

Section: Tren Nilai Ekspor Karet Indonesia ( 000 Usd) Ke Amerikamentioning

confidence: 99%

Indonesia's Rubber Exports to the United States

Apriliyanti,

Baroh,

Widyastuti

2024

IJMRA

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Rubber is one of Indonesia's leading plantation commodities exported to various countries, one of Indonesia's natural rubber market destinations is the United States. Based on data from the trade map, the export value of Indonesian natural rubber in the US market is in first place with an average value of 1,158,164 USD. The purpose of this study is to analyze the trend of Indonesian rubber exports to the United States and to analyze the competitiveness of Indonesian rubber in the United States. The data used is secondary data from 2013-2022. The analysis method used is trend analysis to determine the trend of export development and Revealed Comparative Advantage (RCA) analysis to analyze competitiveness. The results showed that the trend of Indonesia's natural rubber export volume decreased every year. RCA shows an average value of 67.856 which means that Indonesian natural rubber has a comparative advantage and strong competitiveness in the American market.

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High-temperature sealing performance and structure optimization of rubber core for conical blowout preventer

Zhang,

Li,

Zhang

et al. 2024

Geoenergy Science and Engineering

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Data processing method for constitutive relation of the rubber core material in spherical blowout preventer

Cited by 7 publications

References 20 publications

Retraction: Study on sensitivity of annular BOP parameters to sealing performance in gas well snubbing service

Retraction: Study on sensitivity of annular BOP parameters to sealing performance in gas well snubbing service

Indonesia's Rubber Exports to the United States

High-temperature sealing performance and structure optimization of rubber core for conical blowout preventer

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