This paper provides a selection of findings on the reliability and risk analysis of submarine blowout preventers (BOPs) achieved in recent studies, which the author has participated among technicians in Petrobras and Rio de Janeiro Federal University -UFRJ. Petrobras is a deepwater E&P leading company and special attention has been given on the deepwater and ultra deepwater scenarios. Particular factors on the BOP for dynamic positioning (DP) rigs need to be accounted as far as risks on safety and downtime are concerned. The analyses have considered a comprehensive BOP reliability database that covers more than 12 years of experience, as well as, a collection of DP experience has been accessed during work. The riser safety margin tends to be unavailable as the water depth becomes deeper, and, so, in an emergency disconnection, the safety isolation of the well tends to be relied on the BOP mechanical barriers only. In this context, risks on different configurations of the BOP are compared and their results discussed with focused attention on main factors of risk. Finally, there has been visible progress on BOP reliability within recent years and a number of good operational practices in place are also mentioned in the paper.
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机译：本文提供了一系列关于在最近的研究中取得的潜艇喷出预防员（BOP）的可靠性和风险分析的调查结果，提交人参加了Petrobras和Rio de Janeiro联邦大学的技术人员.UFRJ。 Petrobras是深水E＆P领先的公司，在深水和超深水场景上都有特别的关注。对于动态定位（DP）钻机的BOP上的特殊因素需要被占对安全和停机时间的风险来说。分析已经考虑了一个全面的BOP可靠性数据库，涵盖了超过12年的经验，以及在工作期间已经访问了一系列DP体验。随着水深变得更深，因此，在紧急断开的情况下，立管安全裕度往往不可用，因此井的安全隔离仅倾向于依赖于BOP机械屏障。在这种情况下，比较了对BOP的不同配置的风险，并以重点关注风险的主要因素讨论其结果。最后，近年来，近年来的BOP可靠性存在明显的进展，并且本文还提到了许多良好的操作实践。
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