Method and system for guaranteeing safety of offshore oil well control equipment

Patent metadata

Field	Value
Publication number	US-11346200-B2
Application number	US-201916704805-A
Country	US
Kind code	B2
Filing date	Dec 5, 2019
Priority date	May 20, 2019
Publication date	May 31, 2022
Grant date	May 31, 2022

Abstract

The present disclosure belongs to the field of marine engineering, and in particular relates to a method and system for guaranteeing the safety of offshore oil well control equipment. The method comprises: identifying the state of a main structure of the offshore oil well control equipment, identifying the state of a hydraulic control unit of offshore oil well control equipment, identifying the state of an electronic control unit of offshore oil well control equipment, predicting the state of the offshore oil well control equipment and making a real-time decision based on existing information; and the system for guaranteeing the safety of the offshore oil well control equipment comprises a state identification subsystem of a main structure, a state identification subsystem of the hydraulic control unit, a state identification subsystem of the electronic control unit and a state prediction and real-time decision subsystem.

First claim

The invention claimed is:

1. A method for guaranteeing the safety of an offshore oil well control equipment, comprising five major steps: identifying the state of a main structure of the offshore oil well control equipment, identifying the state of a hydraulic control unit of the offshore oil well control equipment, identifying the state of a electronic control unit of the offshore oil well control equipment, predicting the state of the offshore oil well control equipment and making a real-time decision based on existing information;
wherein the identifying the state of the main structure of the offshore oil well control equipment specifically comprises:
S 101 : obtaining states of nodes V 11 V 12 . . . V 1a A 11 A 12 . . . A 1b C 11 C 12 . . . C 1c at a characteristic value acquisition layer of the main structure of the offshore oil well control equipment by signal processing, the corresponding states being V 11 (m 11 ) V 12 (m 12 ) . . . V 1a (m 1a ) A 11 (s 11 ) A 12 (s 12 ) . . . A 1b (s 1b ) C 11 (w 11 ) C 12 (w 12 ) . . . C 1c (w 1c );
S 102 : obtaining failure probabilities of corresponding components based on an established Bayesian network, wherein for a component F 1x (x=1,2, . . . m), a method for solving the fault probabilities is as follows:

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Assignees

• Univ China Petroleum East China

Inventors

• Cai Baoping
• Liu Yonghong
• Yang Chao
• Kong Xiangdi
• Zhao Yi
• Xu Hongqi
• Li Xincheng
• Chen Yandong
• Ji Renjie
• Liu Zengkai
• Liu Libing
• Zhang Rikui
• Yang Yuqian
• Liu Shitang
• Wei Xin

Classifications

• G06N7/01 Primary

  Probabilistic graphical models, e.g. probabilistic networks · CPC title

• G06F18/24155

  Bayesian classification · CPC title

• E21B44/00 Primary

  Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions · CPC title

• G06Q50/02

  Agriculture; Fishing; Forestry; Mining · CPC title

• G01N27/00

  Investigating or analysing materials by the use of electric, electrochemical, or magnetic means (G01N3/00 – G01N25/00 take precedence; measurement or testing of electric or magnetic variables or of electric or magnetic properties of materials G01R) · CPC title