Device and method for measuring phase fraction of two-phase flow by electromagnetic induction technology
A technology of electromagnetic induction and phase fraction, applied in the direction of material magnetic variable, etc., can solve the problem of narrow range of oil-water ratio
Pending Publication Date: 2020-07-10
兰州孚瑞得科技有限公司
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Problems solved by technology
The reactance method, including the capacitance method and the conductance method, can be applied to a narrow range of oil-water ratio, and is not suitable for the two-phase flow measurement of the full range (phase fraction 0%-100%)
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Embodiment 1
[0036] A device for measuring the phase fraction of two-phase flow by electromagnetic induction technology, including a sensor housing 2, the sensor housing 2 is the main support and protection device of the test device, and is the main body of the test device, which is processed by high temperature resistant and corrosion resistant materials It is suitable for the production site of crude oil and natural gas. The inside of the sensor housing 2 is provided with an insulating lining 4. The insulating lining 4 provides insulation protection for the transmitting coil 1 and the receiving coil 3, so as to avoid contact with the test medium to form an electrical short circuit, causing The test signal cannot be transmitted and received correctly. A transmitting coil 1 and a receiving coil 3 are arranged between the insulating lining 4 and the inner wall of the sensor housing 2. The receiving coil 3 is an electromagnetic signal receiving coil, that is, the eddy current in the induction ...
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The invention discloses a device and a method for measuring the phase fraction of a two-phase flow by an electromagnetic induction technology. The device comprises a sensor housing, an insulating lining is arranged in the sensor housing; a transmitting coil and a receiving coil are arranged between the insulating lining and the inner wall of the sensor housing; wherein the top of the sensor shellis provided with a receiving electrode binding post and an emitting electrode binding post which penetrate through the upper part of the sensor housing, the top of the sensor housing is provided withan adapter outside the receiving electrode binding post and the emitting electrode binding post, and the top of the adapter is communicated with a gauge outfit. According to the invention, phase fraction measurement can be carried out on oil-water two-phase flow and gas-water two-phase flow, is not influenced by the proportion and flow pattern of each phase in the fluid, and can be carried out ina full range (the phase fraction is 0-100%). The testing device provided by the invention can be directly connected with an oil pipeline, and a received signal is processed and displayed by a computerafter being acquired and preprocessed, so that online measurement can be realized.
Description
technical field [0001] The invention relates to the technical field of two-phase flow detection, in particular to a device and method for measuring the phase fraction of two-phase flow by electromagnetic induction technology. Background technique [0002] In the process of crude oil and natural gas extraction, water in oil and water in natural gas are common, and the detection of oil-water or gas-water two-phase flow has become a major problem in production logging. Accurately measuring the phase fraction of oil, gas, and water is crucial It is of great significance to determine stratified production and adjust mining strategies and control schemes. At present, the measurement methods of oil, gas and water three-phase flow mainly include: ray method, capacitance method, conductivity method and so on. The counting and statistical error of the ray method is large, the sampling range is small, and there are safety radiation problems in the use process. The reactance method, i...
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IPC IPC(8): G01N27/74
CPCG01N27/74
Inventor 周彬程进军
Owner 兰州孚瑞得科技有限公司