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A micron capillary gas-liquid dynamic phase interface test system

A testing system and phase interface technology, applied in soil material testing, material inspection products, etc., can solve the problems of inability to directly measure the contact angle, inability to observe the phase interface, and inability to observe the movement process of the phase interface.

Active Publication Date: 2019-12-03
INST OF MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the dynamic displacement process means that the phase interface will move a certain distance, so high-magnification microscopes cannot observe the movement process of the phase interface
[0004] If a low magnification microscope is used to observe, the change of the position of the phase interface can be observed, but the phase interface cannot be observed, so the contact angle cannot be directly measured

Method used

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  • A micron capillary gas-liquid dynamic phase interface test system
  • A micron capillary gas-liquid dynamic phase interface test system
  • A micron capillary gas-liquid dynamic phase interface test system

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Embodiment Construction

[0061] like figure 1 , 2 As shown in , 3, an embodiment of the present invention provides a micron capillary gas-liquid dynamic phase interface testing system, which generally includes a microfluidic chip 20 , a pressure control pipeline 40 , a mobile platform 30 , a camera unit 50 and a control system 10 .

[0062] The microfluidic chip 20 is used for passing the test liquid, and is provided with a micron capillary channel 21; the specific microfluidic chip 20 may be a plate-shaped structure made of glass, organic material, or the like. The micron capillary channel 21 is the place where gas-liquid dynamic two-phase displacement occurs, and it needs to have sufficient strength, processing precision and operability. According to the requirements of this embodiment, the characteristic size of the micron capillary channel 21 is in the range of 10-100 μm, such as 20, 40 and 80 μm used in this embodiment, and tested respectively.

[0063] The specific microfluidic chip 20 can be ...

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Abstract

The invention provides a micron capillary gas-liquid dynamic phase interface testing system. Movement speed of a phase interface is determined through an image processing algorithm by utilizing a dynamic testing device, and then the speed of a movable base is adjusted through a motor by utilizing the speed, thereby enabling a micro-fluid chip to making corresponding movement along a phase interface movement direction, and enabling the phase interface to be correspondingly maintained in a field of view of a camera unit; the measurement basis is provided for dynamic contact angle measurement under a low capillary number and low bond number state, and the data processing efficiency and the measurement precision are greatly improved.

Description

technical field [0001] The present invention relates to the field of enhanced petroleum exploitation, in particular to the gas-liquid micron capillary which can automatically locate the phase interface within the observation field of view by controlling the moving speed and direction of the microfluidic chip in the process of measuring gas-liquid dynamic displacement in the micron capillary Dynamic phase interface test system. Background technique [0002] The mechanism of two-phase displacement in a single micron-scale capillary is the basis of two-phase displacement in porous media in natural environments. Two-phase displacement in porous media occurs in many industrial or natural processes, such as water in tight oil reservoirs. For processes such as gas flooding, solution gas flooding, and water flooding, obtaining dynamic contact angle information under the above industrial conditions is crucial for evaluating the two-phase displacement process in the entire porous medi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 雷达林缅江文滨曹高辉徐志朋李曹雄姬莉莉
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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