CN104111212A - Apparatus and method for measuring starting pressure of liquid in micropipe based on particle tracing method - Google Patents
Apparatus and method for measuring starting pressure of liquid in micropipe based on particle tracing method Download PDFInfo
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- CN104111212A CN104111212A CN201410310988.1A CN201410310988A CN104111212A CN 104111212 A CN104111212 A CN 104111212A CN 201410310988 A CN201410310988 A CN 201410310988A CN 104111212 A CN104111212 A CN 104111212A
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Abstract
The invention provides an apparatus and a method for measuring starting pressure of a liquid in a micropipe based on the particle tracing method. The apparatus and the method are mainly used for measuring starting pressure of the liquid in the micropipe and analyzing the micro-scale effect of the liquid. The apparatus comprises a mobile platform, vertical mobile guide rails, a fixture, a small container, a connection conduit, a capillary tube, a glass tube, a microscope, an image collector and a computer. During measuring, a to-be-measured liquid and a tracer particle are premixed and then put in the transparent small container; when the capillary tube is full of the liquid and the liquid flows into the glass tube, the fixture and the small container are moved downwards along the vertical mobile guide rails and aligned with the outlet of the capillary tube; when it is observed that the tracer particle in the micropipe begins to move instead of being stationary, the difference between the liquid level in the small container and the liquid level of the outlet of the capillary tube is measured and recorded at the time, and the difference is multiplied by the density and gravitational acceleration of the liquid so as to obtain the starting pressure of the to-be-measured liquid in the capillary tube. The apparatus and the method have the advantages of high measuring precision, visual measuring results and short consumed time.
Description
Technical field
The present invention relates to a kind of device and method of measuring complex fluid starting pressure in fine duct, relate in particular to a kind of device and method of measuring liquid activated pressure in microtubule based on Particle.
Background technology
In low-permeability oil deposit, because pore radius and boundary layer thickness are almost on the same order of magnitude or less, add the impact of porous medium and clay, the meeting that affects in this solid-liquid boundary layer strengthens greatly, the ratio that border fluid accounts for fluid in pore system increases, boundary layer has not been allowed to ignore on the impact of seepage flow, even can make seepage flow depart from darcy flow rule, present nonlinear characteristic and have starting pressure, only have when driving pressure is greater than the starting pressure in certain duct, the fluid in this duct just starts to flow.The method of measuring at present starting pressure mainly contains " Ya Cha ?discharge method " and " capillary equilibrium method ", the former is that the extrapolation of logical overpressure difference ?flow curve obtains starting pressure, and measurement point is many, and Measuring Time is long, measuring accuracy is affected, and the theoretical foundation of Extrapolation method existing problems; Although the latter is directly perceived, only have kapillary inner fluid to reach balance and could measure, the kapillary that is less than 50 microns for diameter, the stand-by period surpasses 1 day, and Measuring Time requires very long, and cannot obtain the mobile details of fluid in microcapillary.
Summary of the invention
The object of this invention is to provide a kind of device and method of measuring liquid activated pressure in micron tubule based on Particle, make it have simple in structurely, and measurement result precision is high, saves Measuring Time.
Technical scheme of the present invention is:
A device of measuring liquid activated pressure in microtubule based on Particle-beam Tracing method, is characterized in that: this device comprises mobile platform, vertical moving guide rail, jig, small container, connecting duct, kapillary, glass tube, microscope, image acquisition device and computing machine; Described vertical moving guide rail is vertically mounted on mobile platform; Described jig is arranged on the slide block of vertical moving guide rail, and can move up and down along guide rail; Described small container is fixed on jig, and the bottom of small container has aperture and is connected with connecting duct; Described front end capillaceous is connected with the downstream end of connecting duct, and end capillaceous is connected with glass tube; Described microscope is placed on the top position of capillary midsection, and described computing machine is connected with described image acquisition device by data line.
A kind of method of measuring liquid activated pressure in microtubule based on Particle-beam Tracing method provided by the invention, is characterized in that the method comprises the steps:
1) will after testing liquid and trace particle premixed, pack in transparent small container, then small container is fixed on the jig being connected with vertical moving guide rail;
2) liquid that contains trace particle enters into kapillary by connecing conduit from small container under gravity condition, when liquid is full of kapillary and flows into glass tube, jig and small container moved down along vertical moving guide rail,
and make itmaintain an equal level with capillary outlet;
3) increase gradually the height of small container, fluid image in kapillary can be input to computing machine by microscope and image acquisition device, during trace particle setting in motion in observing kapillary, illustrate that fluid starts to flow, survey record now in corresponding small container the liquid level of liquid level and capillary outlet poor, and be multiplied by density and the acceleration of gravity of liquid, just obtain the starting pressure of testing liquid in kapillary.
In the method for the invention, step 1) in, trace particle mixes by the percent by volume of 0.5%-2% with liquid.
The present invention has the following advantages and the technique effect of high-lighting: described measurement mechanism structure and measuring principle are simple, and measurement result precision is high, have greatly saved Measuring Time.
Accompanying drawing explanation
Fig. 1 measures the device of the static starting pressure of liquid in micron tubule based on Particle-beam Tracing method.
In figure: 1-electric platforms; The vertical moving guide rail of 2-; 3-jig; 4-small container; 5-connecting duct; 6-kapillary; 7-glass tube; 8-microscope; 9-image acquisition device; 10-computing machine.
Embodiment
Below in conjunction with accompanying drawing, concrete structure of the present invention, principle and the course of work are elaborated.
Fig. 1 measures the device of the static starting pressure of liquid in micron tubule based on Particle-beam Tracing method, this device comprises mobile platform 1, vertical moving guide rail 2, jig 3, small container 4, connecting duct 5, kapillary 6, glass tube 7, microscope 8, image acquisition device 9 and computing machine 10; Described vertical moving guide rail 2 is vertically mounted on mobile platform 1; Described jig 3 is arranged on the slide block of vertical moving guide rail 2, and can move up and down along guide rail; Described small container 4 is fixed on jig 3, and the bottom of small container 4 has aperture and is connected with connecting duct 5; The front end of described kapillary 6 is connected with the downstream end of connecting duct 5, and the end of kapillary 6 is connected with glass tube 7; Described microscope 8 is placed on the top position at kapillary 6 middle parts, and described computing machine is connected with described image acquisition device by data line.
Measuring process of the present invention is as follows: first will after testing liquid and trace particle premixed, be encased in transparent small container 4 (trace particle generally mixes by the percent by volume of 0.5%-2% with liquid).Then small container is fixed on the jig 3 being connected with vertical moving guide rail 2, small container 4 is connected with kapillary 6 by connecting duct 5, liquid can enter into kapillary from small container by connecing conduit 5 under gravity condition, when liquid is full of kapillary and flows into glass tube 7, jig and small container are moved down into extreme lower position along vertical moving guide rail, and itself and capillary outlet are maintained an equal level, after maintaining an equal level with capillary outlet, due to kapillary now, importing and exporting liquid level difference is zero, so liquid stops flowing, then increase gradually the height of small container, fluid image in kapillary can be input to computing machine 10 by microscope 8 and image acquisition device 9, during trace particle setting in motion in observing kapillary, illustrate that fluid starts to flow, survey record is the poor h of liquid level of liquid level and capillary outlet in corresponding small container now, and be multiplied by density and the gravity acceleration g of testing liquid, just can obtain the starting pressure of testing liquid in kapillary, specific formula for calculation is P
s=ρ gh.
Claims (3)
1. based on Particle-beam Tracing method, measure a device for liquid activated pressure in microtubule, it is characterized in that: this device comprises mobile platform (1), vertical moving guide rail (2), jig (3), small container (4), connecting duct (5), kapillary (6), glass tube (7), microscope (8), image acquisition device (9) and computing machine (10); Described vertical moving guide rail (2) is vertically mounted on mobile platform (1); Described jig (3) is arranged on the slide block of vertical moving guide rail (2), and can move up and down along guide rail; It is upper that described small container (4) is fixed on jig (3), and the bottom of small container (4) has aperture and is connected with connecting duct (5); The front end of described kapillary (6) is connected with the downstream end of connecting duct (5), and the end of kapillary (6) is connected with glass tube (7); Described microscope (8) is placed on the top position at kapillary (6) middle part, and described computing machine is connected with described image acquisition device by data line.
2. adopt a kind of method of measuring liquid activated pressure in microtubule based on Particle-beam Tracing method of device as claimed in claim 1, it is characterized in that the method comprises the steps:
1) will after testing liquid and trace particle premixed, pack in transparent small container (4), then small container is fixed on the jig (3) being connected with vertical moving guide rail (2);
2) liquid that contains trace particle enters into kapillary by connecing conduit from small container under gravity condition, when liquid is full of kapillary and flow into glass tube (7), jig and small container moved down along vertical moving guide rail,
and make itmaintain an equal level with capillary outlet;
3) then increase gradually the height of small container, fluid image in kapillary can be input to computing machine by microscope and image acquisition device, during trace particle setting in motion in observing kapillary, illustrate that fluid starts to flow, survey record is the poor h of liquid level of liquid level and capillary outlet in corresponding small container now, and be multiplied by density and the acceleration of gravity of liquid, just obtain the starting pressure of testing liquid in kapillary.
3. a kind of method of measuring liquid activated pressure in microtubule based on Particle-beam Tracing method according to claim 2, is characterized in that: step 1) in trace particle mix by the percent by volume of 0.5%-2% with liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410310988.1A CN104111212B (en) | 2014-07-01 | 2014-07-01 | The device and method of liquid activated pressure in micro-pipe is measured based on Particle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410310988.1A CN104111212B (en) | 2014-07-01 | 2014-07-01 | The device and method of liquid activated pressure in micro-pipe is measured based on Particle |
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| Publication Number | Publication Date |
|---|---|
| CN104111212A true CN104111212A (en) | 2014-10-22 |
| CN104111212B CN104111212B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410310988.1A Expired - Fee Related CN104111212B (en) | 2014-07-01 | 2014-07-01 | The device and method of liquid activated pressure in micro-pipe is measured based on Particle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017054255A1 (en) * | 2015-09-28 | 2017-04-06 | 北京大学 | Microscopic imaging device for pressure-adjustable flow field |
Citations (4)
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|---|---|---|---|---|
| JPH02298836A (en) * | 1989-05-15 | 1990-12-11 | Nippon Baldwin Kk | Method and device for evaluating surface liquid-absorbing property of liquid-absorbing sheet material |
| CN201318975Y (en) * | 2008-12-15 | 2009-09-30 | 浙江师范大学 | Device used for measuring static starting pressure of liquid in microscale circular tube |
| CN101598537A (en) * | 2009-07-24 | 2009-12-09 | 武汉大学 | A kind of method and apparatus of measuring capillary inner diameter |
| CN101852714A (en) * | 2010-04-30 | 2010-10-06 | 中国石油大学(北京) | Measuring system and method of low-speed non-linear seepage parameters |
-
2014
- 2014-07-01 CN CN201410310988.1A patent/CN104111212B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02298836A (en) * | 1989-05-15 | 1990-12-11 | Nippon Baldwin Kk | Method and device for evaluating surface liquid-absorbing property of liquid-absorbing sheet material |
| CN201318975Y (en) * | 2008-12-15 | 2009-09-30 | 浙江师范大学 | Device used for measuring static starting pressure of liquid in microscale circular tube |
| CN101598537A (en) * | 2009-07-24 | 2009-12-09 | 武汉大学 | A kind of method and apparatus of measuring capillary inner diameter |
| CN101852714A (en) * | 2010-04-30 | 2010-10-06 | 中国石油大学(北京) | Measuring system and method of low-speed non-linear seepage parameters |
Non-Patent Citations (1)
| Title |
|---|
| 石京平: "低渗透油田油水两相低速非达西渗流规律研究", 《中国博士学位论文全文库 工程科技I辑》, no. 5, 15 May 2008 (2008-05-15) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017054255A1 (en) * | 2015-09-28 | 2017-04-06 | 北京大学 | Microscopic imaging device for pressure-adjustable flow field |
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| CN104111212B (en) | 2016-08-17 |
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Granted publication date: 20160817 Termination date: 20200701 |