A system and method for diagnosing working conditions of electric pump wells based on multi-sensor data fusion
A multi-sensor and diagnostic system technology, applied in the field of electric pump well working condition diagnosis system based on multi-sensor data fusion, can solve the problems of lack of systematicness and practicability of fault analysis results, lack of field application data, etc.
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Embodiment 1
[0118] In this example, the real-time data of Well No. 1 measured in a working area is taken as an example. The real-time data of this well is saved every 30 seconds. On May 11, 2019, the shaft of the gas separator of the well broke from the bottom, and the broken part was stuck on the coupling. , select the historical data of 2.5 hours of failure of the well, and the obtained data are as follows Figure 27 shown. Preprocess the real-time pump inlet pressure, pump outlet pressure, pump inlet temperature, motor temperature, current, voltage, frequency, oil pressure data and calculated pump pressure difference data, and take the well 14:20 as the diagnosis time point , select 30min, 20min and 10min as the time window for feature processing to draw trend curves of different characteristic parameters, use the curve trend recognition model established in this application to analyze and combine Figure 8 Diagnose the typical working condition rule chart, and the diagnosis results in ...
Embodiment 2
[0121] Taking the real-time data of No. 3 well measured in a certain operation area as an example, the well can collect in real time the frequency, voltage, current, pump inlet pressure, pump outlet pressure, motor temperature, fluid temperature, back pressure, oil pressure, Return to temperature and save once every minute. Some of its real-time data on November 2 and 3, 2019 are as follows Figure 29 As shown, according to the obtained data, it was found that the current, voltage, motor temperature, and fluid temperature all suddenly dropped to 0 at 8:33 on the 3rd, which were classified as abnormal data and directly eliminated; at 4:03 on the 3rd, the well The pump inlet pressure drops sharply and the pump outlet pressure increases, resulting in the pump inlet pressure being almost the same as the outlet pressure, and other parameters also change accordingly. Select the well at 15 o'clock as the diagnosis time point, and 30 minutes as the time interval, and use the multi-par...
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