CN107036951A - A kind of micro-channel model for simulating porous media internal flow - Google Patents
A kind of micro-channel model for simulating porous media internal flow Download PDFInfo
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- CN107036951A CN107036951A CN201611170135.8A CN201611170135A CN107036951A CN 107036951 A CN107036951 A CN 107036951A CN 201611170135 A CN201611170135 A CN 201611170135A CN 107036951 A CN107036951 A CN 107036951A
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- silicon chip
- microtrabeculae
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 19
- 239000010703 silicon Substances 0.000 claims abstract description 19
- 239000000758 substrate Substances 0.000 claims abstract description 17
- 239000011521 glass Substances 0.000 claims abstract description 13
- 238000005259 measurement Methods 0.000 claims abstract description 6
- 238000005530 etching Methods 0.000 claims abstract description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000004088 simulation Methods 0.000 abstract description 8
- 239000011148 porous material Substances 0.000 abstract description 5
- 238000012800 visualization Methods 0.000 abstract description 3
- 238000003491 array Methods 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 10
- 239000011435 rock Substances 0.000 description 10
- 239000012530 fluid Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 238000000992 sputter etching Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/088—Investigating volume, surface area, size or distribution of pores; Porosimetry
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Biochemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Dispersion Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Fluid Mechanics (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
Abstract
A kind of micro-channel model for simulating porous media internal flow, and in particular to the micro-channel model of Complicated Pore Structures inside simulation core.The model includes silicon chip substrate, and entrance, entrance cavity, entrance, micro-channel, measuring section, outlet plenum and outlet of the etching in silicon chip substrate；Provided with multiple in staggered microtrabeculae in micro-channel, multiple microtrabeculaes formation micro-pillar arrays, the height of microtrabeculae is identical with the depth of micro-channel；Glass cover-plate is provided with the top of silicon chip substrate, the glass cover-plate is realized with micro-channel and silicon chip substrate and is tightly connected.By setting micro-pillar array inside micro-channel, and can be by changing the size, shape and arrangement mode of microtrabeculae, can real Complicated Pore Structures inside simulation core, while the visualization measurement of micro-channel internal flow details can also be realized by the glass cover-plate above micro-channel model.
Description
Technical field
The present invention relates to a kind of micro-channel model for simulating porous media internal flow, more particularly in a kind of simulation core
The micro-channel model of portion's Complicated Pore Structures.
Background technology
In low-permeability oil deposit, blowhole very little and complicated, the Complex Flows how obtained inside rock core are thin
Section is significant to understanding percolation law and raising oilfield exploitation efficiency inside rock core in depth.Oozed at present on measurement rock core
The method of stream ability is mainly conventional core permeability survey method, i.e., rock core is put into high pressure pressure core flow tester clamper
In, salt solution is squeezed into from rock core lower end in the presence of compression pump, upper end outflow, by measuring the pressure difference at rock core two ends and passing through
The flow of rock core can calculate the size of permeability.But this method can only provide the overall negotiability of rock core, it is impossible to obtain
Flowing details and micro flow mechanism inside rock core.
The content of the invention
It is an object of the invention to provide a kind of micro-channel model for simulating porous media internal flow, by being handed in micro-channel
Complicated Pore Structures inside the micro-pillar array simulation core of mistake arrangement, injecting fluid into the micro-channel with micro-pillar array can
With the flowing law inside simulation core porous media, and visualization measurement can be realized.
Technical scheme is as follows：
A kind of micro-channel model for simulating porous media internal flow, it is characterised in that：The model includes silicon chip substrate, with
And entrance, entrance cavity, entrance, micro-channel, micro-pillar array, measuring section, outlet plenum and outlet of the etching in silicon chip substrate；It is micro-
Post array is arranged on micro-channel；The upstream of described micro-channel is connected by entrance with entrance cavity, and the downstream of micro-channel passes through
Measuring section is connected with outlet plenum；Described micro-pillar array is to be staggered to form by multiple microtrabeculaes, the height and micro-channel of microtrabeculae
Depth it is identical；Glass cover-plate is provided with the top of silicon chip substrate, the glass cover-plate is realized with micro-channel and silicon chip substrate and sealed
Connection.
Preferably, described channel depth is 20-80 microns.The section of each microtrabeculae is square, the length of side model of microtrabeculae
Enclose for 10-50 microns, microtrabeculae spacing range is 2-10 microns.
Preferably, entrance is identical with the width of measuring section, is 2-3 times of micro-channel width, its depth and micro-channel
Depth is identical.
Technique effect of the present invention with advantages below and high-lighting：1. by setting micro-pillar array inside micro-channel,
And can be by changing Complicated Pore Structures inside the size, shape and arrangement mode of microtrabeculae, simulation core, while can also pass through
Glass cover-plate above micro-channel model realizes that the visualization measurement of details is flowed in micro-channel internal flow.2. the model can pass through
Etch and formed on silicon chip, by controlling etch period to process the micro-channel of different depth, preparation method is simple, sealing effect
It is really good.
Brief description of the drawings
Fig. 1 is a kind of micro-channel model of simulation core porous media internal flow.
Fig. 2 is Fig. 1 A-A profiles.
Fig. 3 is the structural representation of micro-pillar array embodiment.
In figure：1- entrances；2- entrance cavities；3- entrances；4- micro-channels；5- micro-pillar arrays；6- measuring sections；7-
Outlet plenum；8- is exported；9- substrates；10- glass cover-plates.
Embodiment
Concrete structure, principle and the course of work to the present invention elaborate below in conjunction with the accompanying drawings.
Fig. 1 be simulation core porous media internal flow micro-channel model, the model include silicon chip substrate 9, entrance 1,
Entrance cavity 3, entrance 3, micro-channel 4, micro-pillar array 5, measuring section 6, outlet plenum 7, outlet 8 and glass cover-plate 10；Described is micro-
Post array 5 is to be staggered to form by multiple microtrabeculaes；The upstream of described micro-channel 4 is connected by entrance 3 with entrance cavity 2,
The downstream of micro-channel 4 is connected by measuring section 6 with outlet plenum 7；The height of microtrabeculae is identical with the depth of micro-channel；In silicon chip substrate
Top be provided with glass cover-plate 10, glass cover-plate 10 and substrate 9 are realized using the method for anode linkage and seal and be connected.
In micro-channel model of the present invention, entrance 3 is identical with the width of measuring section 6, and its width is that micro-channel is wide
2-3 times of degree, its depth is identical with the depth of micro-channel 4.
As shown in figure 3, microtrabeculae of the micro-pillar array 5 by multiple sections for square is constituted, microtrabeculae is in staggered pattern, just
The side size range of square microtrabeculae is generally 10-50 microns, and microtrabeculae spacing range is 2-10 microns, and the depth bounds of micro-channel is
20-80 microns, different types of rock core structure can be simulated by designing the micro-pillar array with the different length of sides and spacing.
The preparation method of micro-channel model is that entrance cavity is etched on silicon chip first with the method for photoetching and ion etching
2nd, entrance 3, micro-channel 4, micro-pillar array 5, measuring section 6 and outlet plenum 7, the method for then utilizing bulk silicon etching in silicon chip back side
Two through holes are made respectively in entrance cavity 2 and outlet plenum 7 as entrance 1 and outlet 8, are finally realized with the method for anode linkage
The sealing of glass cover-plate 10 and silicon chip substrate 9 and the encapsulation of micro-channel.(as shown in Figure 2).
The measurement process of the present invention is as follows：
Testing liquid is injected into micro-channel model by graduated cylinder or compression pump, fluid is by entrance 3 and with micro-
Measuring section 6 is flowed into the micro-channel 4 of post array 5, can obtain a certain by recording not the liquid level position in measuring section in the same time
The flow of micro-channel is flowed through under driving pressure.If adding trace particle in a fluid, spike is not recorded by record in the same time
Position of the particle in the gap of micro-pillar array 5 obtains the VELOCITY DISTRIBUTION of fluid.
Claims (4)
1. a kind of micro-channel model for simulating porous media internal flow, it is characterised in that：The model includes silicon chip substrate (9),
And entrance (1) of the etching in silicon chip substrate, entrance cavity (2), entrance (3), micro-channel (4), micro-pillar array (5), measurement
Section (6), outlet plenum (7) and outlet (8)；Micro-pillar array (5) is arranged on micro-channel (4)；The upstream of described micro-channel (4) passes through
Entrance (3) is connected with entrance cavity (2), and the downstream of micro-channel (4) is connected by measuring section (6) with outlet plenum (7)；Described is micro-
Post array (5) is to be staggered to form by multiple microtrabeculaes, and the height of microtrabeculae is identical with the depth of micro-channel；On the top of silicon chip substrate
Portion is provided with glass cover-plate (10), and the glass cover-plate is realized with micro-channel and silicon chip substrate and is tightly connected.
2. a kind of micro-channel model for simulating porous media internal flow according to claim 1, it is characterised in that：Each
The section of microtrabeculae is square, and the side size range of microtrabeculae is 10-50 microns, and microtrabeculae spacing range is 2-10 microns.
3. a kind of micro-channel model for simulating porous media internal flow according to claim 1 or 2, it is characterised in that：
Described channel depth is 20-80 microns.
4. a kind of micro-channel model for simulating porous media internal flow according to claim 3, it is characterised in that：It is described
Entrance (3) is identical with the width of measuring section (3), is 2-3 times of micro-channel width, and its depth is identical with the depth of micro-channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611170135.8A CN107036951A (en) | 2016-12-16 | 2016-12-16 | A kind of micro-channel model for simulating porous media internal flow |
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|---|---|---|---|
| CN201611170135.8A CN107036951A (en) | 2016-12-16 | 2016-12-16 | A kind of micro-channel model for simulating porous media internal flow |
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| CN107036951A true CN107036951A (en) | 2017-08-11 |
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| CN201611170135.8A Pending CN107036951A (en) | 2016-12-16 | 2016-12-16 | A kind of micro-channel model for simulating porous media internal flow |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827822A (en) * | 2019-03-15 | 2019-05-31 | 西北大学 | A kind of true rock flow model in porous media of high-temperature and high-pressure visual and preparation method thereof |
| CN113092339A (en) * | 2021-04-10 | 2021-07-09 | 河南工业大学 | Visual micro-channel model for simulating migration process of pollutants in porous medium containing preferential flow |
| CN115254213A (en) * | 2022-06-24 | 2022-11-01 | 中国计量大学 | Micro-fluidic chip device based on real soil pore network |
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| CN101393103A (en) * | 2008-10-31 | 2009-03-25 | 中国科学院力学研究所 | Hydrate microscopic seepage experimental apparatus |
| CN102494972A (en) * | 2011-11-21 | 2012-06-13 | 北京科技大学 | Two-dimensional heat curing porous medium model for microscopic oil displacement and manufacturing method for model |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827822A (en) * | 2019-03-15 | 2019-05-31 | 西北大学 | A kind of true rock flow model in porous media of high-temperature and high-pressure visual and preparation method thereof |
| CN113092339A (en) * | 2021-04-10 | 2021-07-09 | 河南工业大学 | Visual micro-channel model for simulating migration process of pollutants in porous medium containing preferential flow |
| CN115254213A (en) * | 2022-06-24 | 2022-11-01 | 中国计量大学 | Micro-fluidic chip device based on real soil pore network |
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Application publication date: 20170811 |
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