Lifetime prognosis of blowout preventer valve for offshore platform based on Wiener process

The blowout preventer valve is the last protective screen to prevent oil spilling in offshore drilling platform. To avoid the happen of the spilling and other disasters which is caused by the blowout preventer valve failure, a lifetime prognosis approach is employed to forecast the lifetime of blowout preventer valve based on Wiener process. Firstly, a performance degradation model is established according to degradation data of the blowout preventer valve. Secondly, parameters in the model are obtained in virtue of the maximum likelihood estimation method, and then the lifetime is prognosed. Finally, an example is given to verify its effectiveness and reliability.