China University of Petroleum

Chuntan Gao

Rikui Zhang

Xincheng Li

Yonghong Liu

Baoping Cai

Renjie Ji

Shitang Liu

Zengkai Liu

Libing Liu

Yuqian Yang

Yandong Chen

Xin Wei

Hongqi Xu

Peng Liu

Xiaoyan Shao

Yanping Zhang

Chaoyang Sheng

The present disclosure relates to a method and system for evaluating the macro resilience of offshore oil well control equipment. The method for evaluating the macro resilience of offshore oil well control equipment comprises six steps: determining the type and strength of external disaster; calculating the failure rate of components; calculating the recovery rate of the components; modeling the BN for a degradation process; modeling the BN for a maintenance process; and calculating the resilience of the offshore oil well control equipment. A system for evaluating the macro resilience of offshore oil well control equipment comprises an external disaster evaluation module, a component failure rate calculation subsystem, a reliability degradation process simulation module, a fault identification module, a component recovery rate calculation module, a reliability recovery process simulation module, a reliability change curve derivation unit and an resilience calculation unit.

Method and system for evaluating macro resilience of offshore oil well control equipment

The present disclosure belongs to the field of petroleum engineering, in particular to a fully-electrically driven downhole safety valve. The fully-electrically driven downhole safety valve comprises a downhole safety valve mechanism and a downhole safety valve control system; wherein the downhole safety valve mechanism includes an electronic cabin module, a transmission control module, a motion conversion module, a magnetic coupling and spring module. and a valve module; the downhole safety valve control system includes a downhole comprehensive unit and an uphole comprehensive unit.

Fully-electrically driven downhole safety valve

Growing community of inventors

Qingdao, China

Chuntan Gao