Well dynamic liquid level auto detector
A detector and liquid level technology, which is applied in the direction of measurement, wellbore/well components, earthwork drilling and production, etc., can solve the problems of large sound velocity error and the sound source can only be operated manually, and achieve the effect of strong amplitude and short duration
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[0019] (1) Liquid level measurement process
[0020] When the oil well casing pressure is higher than 0.1MPa, the liquid level measurement process is as follows. See figure 1 , the electronic unit 6 controls the solenoid valve 5 to open, and the pressure of the container 4 drops. After the electromagnetic valve 5 is opened and the pressure of the container 4 is low to the test tube pressure of 0.1 MPa, the electromagnetic valve 5 is closed to get ready for the test. Then the electronic unit 6 controls the solenoid valve 3 to open and close quickly, so that a negative pressure wave is formed in the cavity of the test tube 1 . The pressure in the cavity of the test tube 1 is continuously collected by the sensor 2 into the electronic unit 6 to form a waveform. When the negative pressure wave propagates downhole and reflects back from the liquid surface, an obvious liquid level echo can be observed on the waveform; at the same time, the negative pressure wave will also generate...
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