Fault detection method for pumping wells under wireless network environment
A technology for pumping wells and fault detection, applied in electrical testing/monitoring, testing/monitoring control systems, instruments, etc., can solve problems such as quantification, low accuracy, and data loss, and achieve the effect of improving accuracy
Inactive Publication Date: 2016-08-31
NORTHEAST GASOLINEEUM UNIV
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Problems solved by technology
However, data transmission based on wireless networks has problems such as data transmission time lag, data loss and its inherent quantization.
Furthermore, the pumping well is a strongly coupled nonlinear system that is difficult to accurately model. Due to its complex working environment, the system itself inevitably has serious random noise interference. The problems are all concentrated on some special nonlinear systems, that is, through some transformations, the systems are included in the category of linear systems for analysis and design, which is very conservative
The existence of the above-mentioned problems leads to the low accuracy of the pumping well fault detection method in the prior art
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[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0024] figure 1 Schematic diagram of the fault detection system for the pumping well. Such as figure 1 As shown, the fault detection system for pumping wells includes a host computer 101 , on-site monitoring equipment 102 and a pumping unit 103 . The on-site monitoring equipment 102 sends the monitoring data of the pumping unit 103 to the host ...
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The invention provides a pumping well fault detection method in a wireless network environment. The method comprises steps: a pumping well mechanism model is built, wherein the pumping well mechanism model is a well nonlinearity coupling model; a mathematical tool is used for analyzing the working environment and the network environment of the pumping well, and in combination with the pumping well mechanism model, a nonlinearity time varying kinetic model of the pumping well is built; fuzzy processing is carried out on the nonlinearity time varying kinetic model of the pumping well, and a fuzzy switching system model of the pumping well is obtained; according to the fuzzy switching system model of the pumping well, a fault detection filter is designed; and the fault detection filter is used for carrying out fault detection on the pumping well, and the fault size can be evaluated. According to the pumping well fault detection method in the wireless network environment, pumping well fault detection accuracy can be improved.
Description
technical field [0001] The embodiment of the present invention relates to the technical field of fault detection, in particular to a fault detection method for pumping wells in a wireless network environment. Background technique [0002] Faults refer to various forms of failures caused by the abnormal operation of the system due to the aging and failure of sensors, actuators and various structural components. Fault detection for pumping wells is an important means to ensure crude oil production in oilfields. [0003] The wireless network has the characteristics of simple networking and convenient maintenance. At present, the data of the pumping wells in the oil field are mainly transmitted through the wireless network. The fault detection method in the prior art is based on a basic assumption: the communication between the physical system and the fault detection filter is not restricted, that is, the data information between the physical system and the fault detection filt...
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IPC IPC(8): G05B23/02
CPCG05B23/02G05B23/0283
Inventor 董宏丽王子栋路阳任伟建沈波霍凤财康朝海杨莉
Owner NORTHEAST GASOLINEEUM UNIV