Method for measuring gas-liquid-solid three-phase split-phase holdup based on ultrasonic tomography
A technology of tomography and measurement methods, which is applied to the analysis of solids using sound waves/ultrasonic waves/infrasonic waves, the analysis of fluids using sound waves/ultrasonic waves/infrasonic waves, and the use of sound waves/ultrasonic waves/infrasonic waves for material analysis. There are many flow parameters to be measured and the flow process is complicated, so as to avoid the difficulty of oil production
Active Publication Date: 2021-06-01
SOUTHWEST PETROLEUM UNIV
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Compared with single-phase flow, multiphase flow has more parameters to be measured and the flow process is very complicated, which is difficult to fully describe with mathematical formulas, thus bringing difficulties to measurement
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[0030] In order to make the purpose, technical solutions and advantages of the present invention clearer, the following technical solutions in the present invention are clearly and completely described. Obviously, the described embodiments are some embodiments of the present invention, rather than 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.
[0031] Such as figure 1 , figure 2 Shown, the measuring method of the gas-liquid-solid three-phase fluid phase holdup based on ultrasonic tomography of the present invention comprises the following steps:
[0032] Firstly, a plurality of ultrasonic probes should be arranged on the outer wall of the pipeline 1 in the three-phase flow of natural gas, drilling fluid and cuttings. (Arrange as many probes as possible according to the diameter of the pipeline, the m...
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The invention provides a gas-liquid-solid three-phase split-phase holdup measuring method based on ultrasonic tomography, and relates to the field of fluid detection. The method comprises the following steps: collecting the distance between a gas phase and a liquid phase in a pipeline so as to obtain the gas phase holdup; and carrying out ultrasonic tomography on the section of the pipeline, carrying out imaging through an optimized TSVD regularization method, and carrying out SURF processing and binarization on an imaging picture to obtain a solid phase holdup and a liquid phase holdup. By adopting the gas-liquid-solid three-phase flow split-phase holdup measuring method, the holdup of each phase can be obtained under the condition of nondestructive testing, and the precision of measuring the v of each phase in a strong interference environment is improved.
Description
technical field [0001] The invention relates to a gas-liquid-solid three-phase flow separation phase holdup measurement method based on ultrasonic tomography, in particular to a gas-liquid-solid three-phase flow separation phase holdup measurement method. Background technique [0002] The "phase" in multiphase flow is defined as the existence form of substances, that is, gaseous, liquid or solid, so multiphase flow is a fluid in which two or more "phases" flow simultaneously and have a clear interface. Sometimes, multiphase flow is also referred to as "multicomponent flow", however the two are different. The latter refers to the simultaneous flow of multiple substances with different chemical properties in the fluid. For example, the mixture of steam and water is a single-component two-phase flow, while air and water are called two-component flow; the oil-water mixed flow in liquid / liquid two-phase flow belongs to two-component flow, but it is a single "liquid flow". Howeve...
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Login to View More IPC IPC(8): G01N29/06G01N29/02G01N29/44
CPCG01N29/0672G01N29/02G01N29/44
Inventor 梁海波徐彬轩杨海李忠兵宋传浩于学会张禾邹佳玲
Owner SOUTHWEST PETROLEUM UNIV