Method for assessing safety integrity level of offshore oil well control equipment

US11243509B2 · kind B2 · utility

Assignee

• CHINA UNIVERSITY OF PETROLEUM (EAST CHINA) · CN

Inventors

• Baoping Cai · Qingdao, CN
• Yonghong Liu · Qingdao, CN
• Wenchao Li · Qingdao, CN
• Xiangdi Kong · Qingdao, CN
• Xiaoyan Shao · Qingdao, CN
• Hongqi Xu · Cangzhou, CN
• Xincheng Li · Shandong, CN
• Yandong Chen · Longbeilingcun, CN
• Renjie Ji · Shandong, CN
• Zengkai Liu · Qingdao, CN
• Libing Liu · Shanghai, CN
• Rikui Zhang · Shandong, CN
• Yuqian Yang · Shandong, CN
• Shitang Liu · Shandong, CN
• Xin Wei · Nanjing, CN

Key dates

• Filing date: Dec 5, 2019
• Grant date: Feb 8, 2022
• Expiry date: Jul 29, 2040

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P90/02
• WIPO field: Control
• WIPO sector: Instruments

Abstract

The present disclosure belongs to the field of offshore oil, and in particular relates to a method for assessing the safety integrity level of offshore oil well control equipment. The method for assessing the safety integrity level of the offshore oil well control equipment comprises three major steps: creating a safety instrumented function evaluation module and dividing the related devices for performing the safety instrumented functions into a sensor subsystem; a controller subsystem and an actuator subsystem, establishing a dynamic Bayesian network model for respective subsystems for calculation; and integrating, analyzing and optimizing the safety integrity data of the subsystems.