Fault diagnosis method and system for rotating equipment of full-electric-control subsurface safety valve
A technology for fault diagnosis and rotating equipment, which is applied in the direction of mechanical valve testing, measuring devices, instruments, etc., can solve the problems of high cost and difficult operation, and achieve the effect of ensuring production safety and high fault diagnosis accuracy
Pending Publication Date: 2021-11-05
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology
[0003] Since the fully electronically controlled downhole safety valve operates underground, fault diagnosis and location are usually carried out in the way of overall lifting, which is difficult to operate and high in cost
Method used
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[0026] specific implementation plan
[0027] Such as figure 1 As shown, the fault diagnosis method for fully electronically controlled downhole safety valve rotating equipment includes three steps: signal acquisition and processing, fault feature extraction, and fault diagnosis reasoning.
[0028] The specific steps of signal acquisition and processing are as follows:
[0029] S101: through the electromagnetic brake vibration sensor 217, electromagnetic clutch vibration sensor 220, motor vibration sensor 223, electromagnetic brake acoustic emission sensor 218, electromagnetic clutch acoustic emission sensor 221, motor acoustic emission Sensor 224, temperature sensor 213, pressure sensor 214 and electromagnetic flowmeter 215 collect the vibration signal, surface acoustic wave signal, temperature signal, pressure signal and well fluid flow signal of the fully electronically controlled downhole safety valve body 119;
[0030] S102: Use the minimum entropy deconvolution algorith...
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The invention belongs to the field of petroleum engineering, and particularly relates to a fault diagnosis method and system for rotating equipment of a full-electric-control subsurface safety valve. The fault diagnosis method for the rotating equipment of the full-electric-control subsurface safety valve comprises three steps of signal acquisition and processing, fault feature extraction and fault diagnosis reasoning. The fault diagnosis system for the rotating equipment of the full-electric-control subsurface safety valve comprises two parts, namely, a signal acquisition and processing subsystem and a signal transmission and analysis subsystem. Compared with the prior art, the fault diagnosis method and system for the rotating equipment of the full-electric-control subsurface safety valve have the effective gain effects that the functions of the fault diagnosis method and system for the rotating equipment of the full-electric-control subsurface safety valve include diagnosis of faults and element failures of the rotating equipment of the full-electric-control subsurface safety valve and detection of leakage and crack defects of a valve body of the full-electric-control subsurface safety valve, so that the production safety of an underground production system is ensured; and fault features are extracted from multi-source information and are used for intelligent comprehensive fault diagnosis, and the fault diagnosis accuracy is very high.
Description
technical field [0001] The invention belongs to the field of petroleum engineering, and in particular relates to a fault diagnosis method and system for an all-electrically controlled downhole safety valve rotating equipment. Background technique [0002] Blowout accident is an important factor threatening 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 potential safety hazards caused by blowout accidents are getting bigger and bigger. The full electric control downhole safety valve is a downhole tool installed in the oil and gas well, which can shut down the well in case of a major failure at the wellhead, prevent blowout and ensure the production safety of the oil and gas well. [0003] Since the fully electronically controlled downhole safety valve operates in the downhole, the fault diagnosis and location are usually ...
Claims
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IPC IPC(8): G01M13/00G01M13/003G01D21/02G06N3/04
CPCG01M13/00G01M13/003G01D21/02G06N3/04
Inventor 杨子琪蔡宝平刘可扬杨俊陈明新李敬昊张锐高春坦盛朝洋王政达史明伟
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)