Fully electronically controlled downhole safety valve intelligent redundant control system
A technology of redundant control and safety valve, applied in general control system, control/regulation system, comprehensive factory control, etc., can solve the problems of low control precision, low degree of intelligence, poor reliability of control system, etc., to improve the response speed , improve reliability and accuracy, improve stability and security
Active Publication Date: 2022-07-05
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology
However, there are shortcomings of low control precision, poor reliability of the control system, and low degree of intelligence, which need to be solved urgently.
Method used
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[0016] specific implementation
[0017] like figure 1 As shown, the fully electronically controlled downhole safety valve control assembly includes motor 1, electromagnetic clutch 2, electromagnetic brake 3, phase switch 4, valve plate opening sensor 5, temperature sensor 6, pressure sensor 7 and electromagnetic flowmeter 8, motor 1 , electromagnetic clutch 2 and electromagnetic brake 3 are used to realize the drive and motion control of fully electronically controlled downhole safety valve 54, phase switch 4, valve plate opening sensor 5, temperature sensor 6, pressure sensor 7 and electromagnetic flowmeter 8 are used for monitoring The operating state of the fully electronically controlled downhole safety valve 54 .
[0018] like figure 2 As shown, the fully electronically controlled downhole safety valve intelligent redundant control system includes an uphole control module 9 and a downhole control module 50, which are connected by a power line.
[0019] The uphole cont...
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The invention belongs to the field of petroleum engineering, and in particular relates to an intelligent redundant control system for a fully electronically controlled downhole safety valve. Fully electronically controlled downhole safety valve control components, including motor, electromagnetic clutch, electromagnetic brake, phase switch, valve plate opening sensor, temperature sensor, pressure sensor and electromagnetic flowmeter; fully electronically controlled downhole safety valve intelligent redundant control system, It includes an uphole control module and a downhole control module, and the downhole control module includes a downhole main control module and a downhole auxiliary control module. The advantage of the present invention is that the fully electronically controlled downhole safety valve intelligent redundant control system improves the response speed of the fully electronically controlled downhole safety valve, and the use of redundant control modules can improve the reliability and accuracy of the control system; The board module adopts the "four-choice three" voting algorithm, and the sensor data acquisition module adopts the "three-choice two" voting algorithm, which can improve the stability and security of the system.
Description
technical field [0001] The invention belongs to the field of petroleum engineering, and in particular relates to an intelligent redundant control system for a fully electronically controlled downhole safety valve. Background technique [0002] Blowout accidents are an important factor that threatens the safe production of oil and gas. Once a blowout accident occurs, it will cause huge economic, property, personnel and environmental losses. With the deep development of the oil and gas industry, the safety hazards caused by blowout accidents are increasing. Therefore, it is extremely important to develop efficient and reliable well control equipment. [0003] Downhole safety valve is an important downhole tool used to prevent blowout and ensure safe production. The traditional downhole safety valve is mainly hydraulically controlled. The current hydraulically controlled safety valve on the market has the defects of high leakage probability and slow shut-in speed, and it can...
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IPC IPC(8): G05B9/03
CPCG05B9/03Y02P90/02
Inventor 蔡宝平高春坦盛朝洋杨超陈明新杨子琪杨骏李敬昊
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)