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Detecting method, detecting device and calculating method of three-phase fluid proportions and flow

A flow test device and fluid ratio technology, which is applied in the volume flow ratio measurement, measurement device, liquid/fluid solid measurement, etc., can solve the problems of large volume of flowmeter and no unified test evaluation.

Inactive Publication Date: 2013-07-10
刘建中
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing flowmeters have just come out in recent years. Due to the extremely harsh online test environment, the measurement range of the three-phase flowmeter is subject to many restrictions, such as the gas content, oil content, water content, viscosity, salinity, etc. degree of influence, so there has not been a unified test evaluation in technology
The volume of this type of flowmeter is relatively large, and the error of most flowmeters on the market is almost 10%

Method used

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  • Detecting method, detecting device and calculating method of three-phase fluid proportions and flow

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Embodiment 1

[0062] A method for testing the ratio and flow of three-phase fluids of the present invention proposes the theory of using continuous pressure measurement to measure the ratio and flow of three-phase fluids online, and adopts a completely different idea and brand-new design concept; in complex fluids Under certain circumstances, the stress test results are more representative and more reliable than other existing test methods.

[0063] Based on the above theoretical method, the present invention provides a three-phase fluid ratio and flow testing device, which can simultaneously test the three-phase fluid ratio and overall volume flow. The schematic diagram of the test device is shown in figure 1 As shown, it includes pipelines and seven pressure sensors 1 , 21 , 22 , 2 , 3 , 31 , and 4 .

[0064] The first, third, fifth, seventh, and ninth pipelines 101, 103, 105, 107, and 109 are all horizontally arranged pipelines, and the second, fourth, sixth, and eighth pipelines 102, 1...

Embodiment 2

[0072] Utilize the test device in embodiment 1 to measure and calculate and can draw the ratio of three-phase fluid and the volumetric flow rate of three-phase fluid, refer to simultaneously figure 1 , Section 1-22-21-2 of the pipeline flows through the overall three-phase flow, and after passing through the expansion diverter 110 and the splitter plate 1102, the pipeline of section 3-31-4 flows through the two phases of oil and water. Due to diameter expansion, diversion, and swirling flow, it is difficult for gas to flow into the 3-31-4 section pipeline. A and B are the temperature sensors at the input and output ends of the flowmeter. The temperature of each section of the flowmeter can be calculated from the temperature gradient, and the density changes of the three-phase fluids can be determined by temperature changes. The density-temperature curves of each phase fluid are given by referring to the density-temperature curve. current density. with P 1 ,P 2 The average v...

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Abstract

The invention discloses a detecting method and a detecting device of three-phase fluid proportions and flow. A continuous pressure-detecting method is adopted to perform the detection. The device comprises a line pipe and seven pressure sensors. The line pipe comprises nine segments pipelines a diameter-enlarging diverter. The first, third, fifth, seventh and ninth pipeline are horizontal pipelines, and the second, fourth, sixth and eighth pipeline are vertical pipelines. The horizontal pipelines, the vertical pipelines and the diameter-enlarging diverter are communicated with one another in a certain manner. The pressure sensors are arranged at corresponding positions of the line pipe. The positions of the first, second, fourth, fifth, sixth and seventh pressure sensor are of right angles, and original flow vectors are turned to be zero. Temperature sensors are arranged at the input terminal and the output terminal of the detecting device. By the aid of the detecting method and the detecting device, three-phase fluid proportions and volume flow can be detected synchronously; the device is simple in structure, free of dynamic components, stable and reliable, and is adaptable to different environments easily, and detecting range limit is less. The invention further discloses a calculating method of the three-phase fluid proportions and the flow, and the calculating method is creative domestically and internationally.

Description

technical field [0001] The invention relates to the field of crude oil measurement, in particular to a three-phase fluid ratio and flow test method, device and calculation method. Background technique [0002] Crude oil produced in oil fields usually has three components: oil, gas, and water; direct measurement of volume flow and the ratio of each phase is an urgent problem to be solved in oil field production. [0003] The use of three-phase flowmeters saves costs in oilfield production and development, and is conducive to decision-making in oilfield management and effective control of processes. The existence of these factors has greatly promoted the development of three-phase flowmeters in the petroleum industry. The existing flowmeters have just come out in recent years. Due to the extremely harsh online test environment, the measurement range of the three-phase flowmeter is subject to many restrictions, such as the gas content, oil content, water content, viscosity, sa...

Claims

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Application Information

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IPC IPC(8): G01F5/00G01F1/34
Inventor 刘建中
Owner 刘建中
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