Research Status and Development Trend of Risk and Reliability Evaluation of Blowout Preventer Group Under Ultra-High Temperature and High Pressure

In the field of oil and gas drilling, the blowout preventer (BOP) serves as a crucial component of well control equipment, playing a vital role in preventing blowout accidents and ensuring production safety. However, in harsh downhole environments with ultra-high temperatures and pressures, the sealing and shearing capabilities of the BOP system can easily diminish due to component failures, necessitating robust reliability management as the cornerstone of risk prevention and control. This article comprehensively analyzes the risk factors that impact the reliability of BOP systems and summarizes the current testing experiments, risk assessment techniques, and simulation technologies involved in BOP systems. Additionally, it systematically reviews the latest advancements in reliability assessment, fault prevention, and control technologies for BOP systems. Furthermore, it discusses future trends in this field. Research indicates that as drilling technology advances towards extreme conditions such as ultra-deep and ultra-high temperature and pressure wells, enhancing the systematization and intellectualization capabilities of BOP system reliability management technologies is crucial for ensuring the safety of drilling operations and promoting efficient oilfield development.

Keywords: Ultra-HTHP, Blowout preventer, Reliability, Sealing performance, Risk assessment, Failure prevention and control.