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Influence of Top Seal Damage on Contact Seal in Ram Blowout Preventer

Top seal failure of ram blowout preventer (BOP) is one of the main factors leading to well control risk. The constitutive model and parameters of nitrile butadiene rubber (NBR) were optimized by compression and tensile tests, and the failure analysis model of the contact seal of the ram BOP top seal...

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Autores principales: Wang, Shiqiang, Zhang, Laibin, Yu, Jiamin, Fan, Jianchun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10179920/
https://www.ncbi.nlm.nih.gov/pubmed/37176296
http://dx.doi.org/10.3390/ma16093413
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author Wang, Shiqiang
Zhang, Laibin
Yu, Jiamin
Fan, Jianchun
author_facet Wang, Shiqiang
Zhang, Laibin
Yu, Jiamin
Fan, Jianchun
author_sort Wang, Shiqiang
collection PubMed
description Top seal failure of ram blowout preventer (BOP) is one of the main factors leading to well control risk. The constitutive model and parameters of nitrile butadiene rubber (NBR) were optimized by compression and tensile tests, and the failure analysis model of the contact seal of the ram BOP top seal was built. The nonlinear contact mechanical behavior of the connection part of the BOP top seal was analyzed by the finite element method. Then, the influence of corrosion and wear defects at the top seal position of the 2FZ35-70 BOP under rated working pressure on the contact seal were studied, and the results showed that the overall contact pressure distribution of the top seal corrosion defects was uniform, the local contact pressure of the corrosion pit edge increased, and the top contact pressure decreased. The overall contact pressure of the wear defect of the top seal decreased linearly, the contact pressure at the maximum depth of the wear defect was the smallest, and the contact pressure gradually decreased to both sides. Ultimately, to guarantee the safety and reliability of the ram BOP, it is suggested that the acceptable depths of the seal corrosion pit and the wear at the top of the ram BOP are 4.0 mm and 0.2 mm, respectively, thus the reliability evaluation problem of the quantitative seal of the ram BOP top seal is solved.
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spelling pubmed-101799202023-05-13 Influence of Top Seal Damage on Contact Seal in Ram Blowout Preventer Wang, Shiqiang Zhang, Laibin Yu, Jiamin Fan, Jianchun Materials (Basel) Article Top seal failure of ram blowout preventer (BOP) is one of the main factors leading to well control risk. The constitutive model and parameters of nitrile butadiene rubber (NBR) were optimized by compression and tensile tests, and the failure analysis model of the contact seal of the ram BOP top seal was built. The nonlinear contact mechanical behavior of the connection part of the BOP top seal was analyzed by the finite element method. Then, the influence of corrosion and wear defects at the top seal position of the 2FZ35-70 BOP under rated working pressure on the contact seal were studied, and the results showed that the overall contact pressure distribution of the top seal corrosion defects was uniform, the local contact pressure of the corrosion pit edge increased, and the top contact pressure decreased. The overall contact pressure of the wear defect of the top seal decreased linearly, the contact pressure at the maximum depth of the wear defect was the smallest, and the contact pressure gradually decreased to both sides. Ultimately, to guarantee the safety and reliability of the ram BOP, it is suggested that the acceptable depths of the seal corrosion pit and the wear at the top of the ram BOP are 4.0 mm and 0.2 mm, respectively, thus the reliability evaluation problem of the quantitative seal of the ram BOP top seal is solved. MDPI 2023-04-27 /pmc/articles/PMC10179920/ /pubmed/37176296 http://dx.doi.org/10.3390/ma16093413 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wang, Shiqiang
Zhang, Laibin
Yu, Jiamin
Fan, Jianchun
Influence of Top Seal Damage on Contact Seal in Ram Blowout Preventer
title Influence of Top Seal Damage on Contact Seal in Ram Blowout Preventer
title_full Influence of Top Seal Damage on Contact Seal in Ram Blowout Preventer
title_fullStr Influence of Top Seal Damage on Contact Seal in Ram Blowout Preventer
title_full_unstemmed Influence of Top Seal Damage on Contact Seal in Ram Blowout Preventer
title_short Influence of Top Seal Damage on Contact Seal in Ram Blowout Preventer
title_sort influence of top seal damage on contact seal in ram blowout preventer
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10179920/
https://www.ncbi.nlm.nih.gov/pubmed/37176296
http://dx.doi.org/10.3390/ma16093413
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