Multiphase flow fluid measuring system

A fluid measurement and multiphase flow technology, applied in measurement, wellbore/well components, earth-moving drilling, etc., can solve the problems of radioactive source environment and human hazard, high cost in the later stage

Active Publication Date: 2021-09-14
深圳市联恒星科技有限公司
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Problems solved by technology

Gamma densitometer uses the characteristic that gamma rays have different attenuation rates in different density media to estimate the mixing density of fluids. The disadvantage of this technical solution is that the radioactive source is harmful to the environment and the human body, and its production, Most of the use needs to be approved by the regulatory authorities, resulting in higher later costs

Method used

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  • Multiphase flow fluid measuring system

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Embodiment

[0067] refer to figure 1 , when a single-phase fluid (such as pure gas) flows through the differential pressure flowmeter module 1, the differential pressure dp generated by the differential pressure flowmeter (such as a classic Venturi tube) g and volume flow Q g are directly proportional to each other, and the corresponding relationship between them is shown in the following formula:

[0068]

[0069] In the formula, A is the flow area of ​​the Venturi throat, β=d / D is the ratio of the diameter of the Venturi throat to the diameter at the entrance, C d is the outflow coefficient, ε is the expansion coefficient, C d and ε can be obtained by looking up the table. dp g is the differential pressure generated by the gas flowing through the Venturi tube, ρ g is the density of the gas phase, which can be calculated according to the measured temperature and pressure according to the composition of natural gas according to national standards.

[0070] When the gas-liquid two...

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Abstract

The invention belongs to the technical field of flow measurement, and particularly relates to a multiphase flow fluid measuring system. An existing oil-gas-water three-phase flowmeter has certain harm to the environment and the human body, and the later cost is high. The multiphase flow fluid measuring system comprises a flowmeter module, a water content module and a data collecting and processing module, wherein the flowmeter module is connected with the water content module, the flowmeter module is connected with the data collecting and processing module, and the water content module is connected with the data collecting and processing module; the flowmeter module is used for measuring the virtual high flow of fluid; the water content module is used for measuring the phase content of water; and the data collecting and processing module is used for collecting data and then calculating the flow of each phase. A sensor is subjected to modular design, the position of the sensor can be conveniently adjusted according to different metering requirements, and rapid, stable and reliable metering detection results can be provided for oil and gas wells under different working conditions.

Description

technical field [0001] The application belongs to the technical field of flow measurement, and in particular relates to a multiphase flow fluid measurement system. Background technique [0002] As an important strategic resource supporting the national economy and people's livelihood, oil and natural gas are involved in the measurement of multiphase flow in technical processes such as exploration, exploitation, transportation and processing. Therefore, it is of great significance to be able to accurately measure multiphase flow. [0003] At present, the multiphase flow measurement methods commonly used in oilfields mostly use the test well separator to separate the three phases of oil, gas and water, and then use single-phase instruments for separate measurement. Although this mode can guarantee a certain accuracy, because the separator is generally large in size and expensive, and the separation process is very time-consuming, this method cannot realize real-time online mea...

Claims

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Application Information

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IPC IPC(8): E21B47/00E21B47/06E21B47/07E21B49/08
CPCE21B47/00E21B47/06E21B47/07E21B49/08
Inventor 张茂懋薛皓白伍国柱任峰万昌智
Owner 深圳市联恒星科技有限公司
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