CN205957907U - Device of light oil boundary layer fluid thickness in measurement microtubule - Google Patents
Device of light oil boundary layer fluid thickness in measurement microtubule Download PDFInfo
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- CN205957907U CN205957907U CN201620446995.9U CN201620446995U CN205957907U CN 205957907 U CN205957907 U CN 205957907U CN 201620446995 U CN201620446995 U CN 201620446995U CN 205957907 U CN205957907 U CN 205957907U
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Abstract
The utility model discloses a device of light oil boundary layer fluid thickness in measurement microtubule, its characterized in that includes: pedestal, laser emitter, spectroscope, microtubule, image acquisition device, image display ware, intermediate receptacle, inert gas steel bottle, laser emitter installs on the base, laser emitter, spectroscope, microtubule, image acquisition device set gradually, the image display ware is connected the image acquisition device, the inert gas steel bottle is connected through the intermediate receptacle the microtubule opening. This application has reached following effect: 1 )Buried micro scale infiltration environment has been simulated better to this technique to can direct measurement boundary layer fluidic thickness, 2 )Through the picture catching of high accuracy, and the later stage numerical value iterative computation that utilizes the computer to go on, the precision of measuring and calculating improved, 3 )Water not only can be measured to this technique, also can measure the better light crude oil of transmittance, and direct high -efficient development for relevant oil reservoir provides the experiment foundation.
Description
Technical field
The application is related to field of oil development and in particular to measuring the device of light oil boundary layer flow body thickness in micro-pipe.
Background technology
This technology is primarily to study the free-boundary problem that low-permeability oil deposit exists on stream further
Mechanism and produce, in numerous free-boundary problem Producing reason, boundary layer theory has obtained the accreditation of Most scholars, recognizes
It is that fluid itself can be divided into border fluid and body phase fluid because intermolecular interaction is different.But at present for border
The research of layer fluid is primarily directed to large-sized pipe flow, and the hole of oil reservoir is very tiny, and reservoir fluid flows for seepage flow, with
The pipe flow theory tool of macroscopic view makes a big difference.But the research for fluid boundary shelf theory in tiny micro-pipe is most of at present
Be in the qualitative analyses stage (Li centre forward, what is smoothly. Non-Darcy percolation mechanism in low permeability reservoir. special reservoirs, 2005,
12(2):35-38), there is a small amount of document to show, Hagen-Poiseuill equation can be passed through, to calculate the side of effective radius
Formula calculates the boundary layer thickness of deionized water indirectly, such as Xu Shaoliang, Yue Xiangan, Hou Jirui, waits that (boundary layer fluid is to low-permeability oil
Hide the impact of seepage characteristic. Xi'an Petroleum University's journal, 2007,22 (2):26-28) He Liyang, Lei Qun, waits (under minute yardstick
Non linear fluid flow through porous medium feature. Petroleum finance, 2011,38 (3):336-340).Or calculated according to paper tinsel millet leaf law
Effect capillary radius, thus indirectly calculate boundary layer thickness：Zhang Pu, Zhang Lianzhong, Li Wenyao, etc. (boundary region is non-to hyposmosis to be reached
The experimentation of western percolation law impact. Hebei University Of Engineering's journal, 2008,25 (3):70-72). also there is scholar to pass through rock core
The method of displacement, poor by the crude quality before and after contrast rock core displacement, thus calculating the thickness of boundary region：As Zhang Lei, old
Beautiful cloud etc. (low-permeability oil deposit boundary layer thickness new method of measuring, petroleum geology and engineering, 2012,26 (3)：99-101).But
Prior art has the disadvantage that：(1) measuring method for macro-scale fluid boundary layer thickness is not suitable for underground at present
The measurement of the boundary layer thickness of the minute yardstick under the conditions of flow through oil reservoir；(2) the research great majority of minute yardstick boundary region are qualitative point
Analysis, a small amount of experiment is also to calculate, by indirectly mode, the thickness obtaining boundary region；(3) presently done most of minute yardsticks
The experimentation of boundary region is directed to deionized water, rather than petroleum-type.
Therefore, how to research and develop a kind of device of light oil boundary layer flow body thickness in measurement micro-pipe, become as urgently to be resolved hurrily
Technical problem.
Utility model content
The subject matter that the application solves is to provide a kind of device of light oil boundary layer flow body thickness in measurement micro-pipe, with
The technical problem that solution cannot be realized.
In order to solve above-mentioned technical problem, the utility model discloses light oil boundary layer flow body thickness in measurement micro-pipe
Device is it is characterised in that include：Pedestal, generating laser, spectroscope, micro-pipe, image collecting device, image display, centre
Container, noble gases steel cylinder, described generating laser is arranged on base, described generating laser, spectroscope, micro-pipe, image
Harvester sets gradually, and described image display connects described image harvester, and described noble gases steel cylinder holds through middle
Device connects described micro-pipe opening.
Further, also include：Convex lenss, described convex lenss are arranged on described spectroscope and micro-pipe and/or micro-pipe and figure
As between harvester.
Further, also include：Filter plate, before described filter plate is arranged on described image harvester.
Further, also include：Pressure transducer, described pressure transducer is arranged on described middle device.
Further, described pedestal is liftable pedestal, described liftable pedestal, including：Crane, fixed seat, described
Crane is located at the lower section of fixed seat, and described generating laser is arranged in fixed seat.
Further, described micro-pipe is:Glass-micropipe, resin micro-pipe.
Further, described image harvester is high accuracy video camera.
Further, also include：Glass guide channel, described glass guide channel fills medium solution, and described micro-pipe is placed in described medium.
Further, described noble gases steel cylinder is nitrogen cylinder.
Further, described image display is notebook computer.
Compared with prior art, the device measuring light oil boundary layer flow body thickness in micro-pipe described in the utility model,
Reach following effect：
1) with respect to existing technology, this technology preferably simulates the minute yardstick osmotic condition of underground it is possible to directly
The thickness of Measured Boundary layer fluid；
2) by high-precision picture catching, and the iterative numerical that later-stage utilization computer is carried out calculates, and improves measurement
And the precision calculating；
3) this technology not only can measure water it is also possible to the measurement preferable light crude oil of transmittance, is directly related oil reservoir
Efficient Development provide experimental basis.
Certainly, implement arbitrary product of the present utility model must be not necessarily required to reach all the above technology effect simultaneously
Really.
Brief description
Accompanying drawing described herein is used for providing further understanding to of the present utility model, constitutes one of the present utility model
Point, schematic description and description of the present utility model is used for explaining this utility model, does not constitute to of the present utility model
Improper restriction.In the accompanying drawings：
Fig. 1 is the whole of the device of light oil boundary layer flow body thickness in measurement micro-pipe described in this utility model embodiment one
Body structure chart.
Fig. 2 is that the device of light oil boundary layer flow body thickness in measurement micro-pipe described in this utility model embodiment one is unused
Index path during media processes micro-pipe.
Fig. 3 is that the device of light oil boundary layer flow body thickness in measurement micro-pipe described in this utility model embodiment one is situated between
Matter processes index path after micro-pipe.
Fig. 4 is that Application Example one processes the relative gray values that the interference fringe obtaining obtains.
Fig. 5 is that Application Example two processes the relative gray values that the interference fringe obtaining obtains.
In wherein Fig. 1：
1 liftable pedestal；2 laser generators；3 spectroscopes；4 convex lenss；5 glass-micropipes；6 convex lenss；7 color filters；8 is high
Precision video camera；9 image displays；10 nitrogen cylinders；11 pressure transducers；12 intermediate receptacles；13 glass guide channels.
Specific embodiment
To censure specific components as employed some vocabulary in the middle of description and claim.Those skilled in the art should
It is understood that hardware manufacturer may call same assembly with different nouns.This specification and claims are not with name
The difference claiming is used as distinguishing the mode of assembly, but difference functionally is used as the criterion distinguished with assembly.As logical
In the middle of piece description and claim, mentioned "comprising" is an open language, therefore should be construed to " comprise but do not limit
In "." substantially " refer in receivable range of error, those skilled in the art can solve described in the range of certain error
Technical problem, basically reaches described technique effect.Description subsequent descriptions are to implement better embodiment of the present utility model, so
Described description is for the purpose of rule of the present utility model to be described, is not limited to scope of the present utility model.This reality
Worked as with new protection domain and be defined depending on the defined person of claims.
Embodiment one
As shown in figure 1, for the present embodiment one provide measurement micro-pipe in light oil boundary layer flow body thickness device, its spy
Levy and be, including：Pedestal 1, generating laser 2, spectroscope 3, micro-pipe 5, image collecting device 8, image display 9, middle appearance
Device 12, noble gases steel cylinder 10, described generating laser 2 is arranged on base 1, described generating laser 2, spectroscope 3, micro-pipe
5th, image collecting device 8 sets gradually, and described image display 9 connects described image harvester 8, described noble gases steel cylinder
10 connect described micro-pipe 5 opening through intermediate receptacle 12.
By nitrogen injection in the micro-pipe full of fluid, the fluid of micro-pipe core will be driven away, and in micro-pipe
Inwall will leave one layer of liquid film, and this liquid film is exactly the boundary layer fluid stronger with micro-pipe active force.This boundary layer fluid is theoretical
On should ringwise be distributed in micro-pipe, as shown in black annulus in Fig. 2.
When the light of laser transmitter projects enters the micro-pipe containing boundary layer fluid from side, segment beam will be
Micro-pipe outer surface, micro-pipe inner surface, boundary layer flow external surface and boundary layer fluid inner surface produce reflection, the phenomenon such as refraction.
If the angle of incidence of certain light beam (as shown in light beam 4 and light beam 5) is suitable, it will in boundary layer flow external surface or boundary layer fluid
Inner surface produces total reflection phenomenon.Because these light beams come from same light source, these reflected lights will produce interference fringe.Will
After these striped planoconvex lenses amplify, and picture catching is carried out by high-precision video camera, by the distribution frequency of interference fringe
Rate, you can directly calculate the boundary layer thickness in micro-pipe.
Because the surface of micro-pipe is it can also happen that reflex, produce the interference fringe of multiple solutions it is difficult to real distinguish which
Be a bit by boundary layer skin reflect it is therefore desirable to eliminate micro-pipe itself negative effect, method for simplifying.Can pass through micro-pipe
Be placed in therewith in refractive index medium solution closely so that incident ray is advanced crosses medium solution, enter back into micro-pipe, finally
Enter boundary layer fluid.Refractive index due to medium solution and micro-pipe is sufficiently close to, and the phenomenon producing reflection hardly occurs,
Therefore the incident ray overwhelming majority only can occur reflex in boundary layer flow external surface and inner surface, as shown in Figure 3.So
Not remove only the impact of micro-pipe itself, so that travel path of incident light is more simplified, light intensity is more concentrated yet, picture catching and place
Reason precision is higher.
Computing formula：
As shown in Figure 3 it is assumed that a certain light beam (such as light beam 1) is entered containing boundary layer fluid from side with incidence angle θ
In micro-pipe, some light forms light beam 2 by after the outer surface reflection through boundary layer fluid, and the angle of two-beam is α.Meanwhile, its
After his segment beam will occur refraction effect in boundary layer fluid, and the inner surface through boundary layer fluid reflects, from outer surface
Project, form light beam 3, it is β it is assumed that incident illumination enters the refraction angle boundary layer fluid from micro-pipe with the angle of original ray
For σ, the angle of reflection of boundary region inner surface is φ.According to refraction, principle of reflection, can obtain：
α=2 θ
D α=2d θ
The refractive index of hypothesis micro-pipe is nglass, border fluid refractive index is nliquid, in micro-pipe, gas refracting index is ngas, micro-
Bore is R, and micro-pipe center is r with a distance from boundary layer fluid, and boundary layer flow body thickness is h.Then：
Order
Arrange,
Make y=Rsin θ, dy=ξ, ξ are the spatial distribution frequency of interference fringe, then
Arrange, obtain
Simultaneously it is contemplated that h=R-r, then
By optical rationale,
L=Kl
Wherein, L is video camera and micro-pipe distance；K is total magnification；L is convex lenss and micro-pipe distance；F is by being caught
Fringe distribution frequency.
Substitute into above formula, obtain
In the presence of not having any boundary layer fluid in micro-pipe, the gas in glass-micropipe and micro-pipe is due to once in refractive index
Different two medias, when the light having same light source enters fashionable, also can produce interference fringe it is assumed that no appointing in its gas-solid interface
Interference fringe frequency during what boundary layer fluid is f0, then：
D α=d β
Due to：D α=2d θ, Then
Substitute into above formula, arrange
To sum up, arrange
For above formula, R, c, β parameter all accurately can be obtained by experiment, and f0, f is not have border fluid and have
Interference fringe distribution frequency during the fluid of border, can be obtained by the light and shade interference fringe image that this experiment obtains.
For improving computational accuracy, the light and shade interference fringe image being obtained is processed, obtains its ash in the plane
Angle value is distributed, and interference fringe is changed into a kind of simple harmonic wave form.On this basis, obtained by fast fourier transform
Its spatial distribution frequency.Obtain so that up conversion can be calculated by the FFT function in Matlab software.
Therefore, incidence angle θ and the boundary layer flow of light can be calculated using the method for numerical computations by above formula
Body thickness h.
In above-described embodiment, micro-pipe can be glass-micropipe, resin micro-pipe or the preferable material of other light transmissions.Internal diameter
For 0.1mm-0.5mm, preferably 0.1mm.
The device of light oil boundary layer flow body thickness in the measurement micro-pipe of above-described embodiment, can described spectroscope with micro-
Increase convex lenss between pipe and/or micro-pipe and image collecting device.Further, it is also possible to setting filtering before image collecting device
Piece.Described image harvester can be high accuracy video camera；Described noble gases steel cylinder is nitrogen cylinder；Described image shows
Device is notebook computer.
When in above-described embodiment, micro-pipe is glass-micropipe, the medium solution being used can be 80% sugar juice glycerol, perfume (or spice)
Other substitution material such as pitch.
Pedestal described in above-described embodiment is liftable pedestal, described liftable pedestal, including：Crane, fixed seat, institute
State the lower section that crane is located at fixed seat, described generating laser is arranged in fixed seat.
Application Example one
The thickness of 7# white oil sample boundaries layer in measurement micro-pipe
1. experimental procedure：
1) as shown in Fig. 1 schematic diagram, correctly connect each experimental part；
2) height of adjustment laser generator and the height of high accuracy video camera and direction, and adjust focal length；
3) LASER Light Source, video camera and the computer being connected with video camera are opened；
4) open nitrogen cylinder, and outlet pressure is set as testing required fixed value；
5) open intermediate receptacle switch, make nitrogen uniformly across the dry glass-micropipe not having any fluid；
6) caught interference fringe is checked by computer, when image stabilization, preserve optimized image；
7) close intermediate receptacle switch；
8) white oil sample will be filled in glass-micropipe；
9) open intermediate receptacle switch, the white oil in glass-micropipe is replaced by nitrogen flooding, will stay in glass-micropipe inwall
One layer of boundary layer fluid；
10) pass through the optimal interference fringe image of cameras capture, and preserve to computer；
11) it is the accuracy improving experimental data, for same sample, repeatable above operation is done several times more.This is real
Test and done ten groups of data altogether.
2. result and analysis
The interference fringe obtaining.Obtain relative gray values as shown in Figure 4, thus obtaining boundary layer thickness：
| Sample | Thickness of liquid film/μm | Angle of incidence/° |
| 7# white oil | 3.438 | 45.2 |
Application Example two
The thickness of 0# diesel samples boundary region in measurement micro-pipe
1. experimental procedure：Identical with application example 1.
2. experimental result and analysis：
The interference fringe obtaining.Obtain relative gray values as shown in Figure 5, thus obtaining boundary layer thickness：
| Sample | Thickness of liquid film/μm | Angle of incidence/° |
| 0# diesel oil | 2.715 | 51.9 |
Compared with prior art, the device measuring light oil boundary layer flow body thickness in micro-pipe described in the utility model,
Reach following effect：
1) with respect to existing technology, this technology preferably simulates the minute yardstick osmotic condition of underground it is possible to directly
The thickness of Measured Boundary layer fluid；
2) by high-precision picture catching, and the iterative numerical that later-stage utilization computer is carried out calculates, and improves measurement
And the precision calculating；
3) this technology not only can measure water it is also possible to the measurement preferable light crude oil of transmittance, is directly related oil reservoir
Efficient Development provide experimental basis.
Also, it should be noted term " inclusion ", "comprising" or its any other variant are intended to nonexcludability
Comprising, so that including a series of process of key elements, method, commodity or equipment not only include those key elements, but also wrapping
Include other key elements being not expressly set out, or also include for this process, method, commodity or intrinsic the wanting of equipment
Element.In the absence of more restrictions, the key element being limited by sentence "including a ..." is it is not excluded that including described wanting
Also there is other identical element in the process of element, method, commodity or equipment.
The foregoing is only embodiment of the present utility model, be not limited to this utility model.For this area
For technical staff, this utility model can have various modifications and variations.All institutes within spirit of the present utility model and principle
Any modification, equivalent substitution and improvement made etc., should be included within right of the present utility model.
Claims (10)
1. measure the device of light oil boundary layer flow body thickness in micro-pipe it is characterised in that including：Pedestal, generating laser, point
Light microscopic, micro-pipe, image collecting device, image display, intermediate receptacle, noble gases steel cylinder, described generating laser is arranged on
On base, described generating laser, spectroscope, micro-pipe, image collecting device set gradually, and described image display connects described
Image collecting device, described noble gases steel cylinder connects described micro-pipe opening through intermediate receptacle.
2. the device measuring light oil boundary layer flow body thickness in micro-pipe according to claim 1 is it is characterised in that also wrap
Include：Convex lenss, described convex lenss are arranged between described spectroscope and micro-pipe and/or micro-pipe and image collecting device.
3. the device measuring light oil boundary layer flow body thickness in micro-pipe according to claim 2 is it is characterised in that also wrap
Include：Filter plate, before described filter plate is arranged on described image harvester.
4. the device measuring light oil boundary layer flow body thickness in micro-pipe according to claim 1 is it is characterised in that also wrap
Include：Pressure transducer, described pressure transducer is arranged on described middle device.
5. in measurement micro-pipe according to claim 1 the device of light oil boundary layer flow body thickness it is characterised in that described
Pedestal is liftable pedestal, described liftable pedestal, including：Crane, fixed seat, described crane is located under fixed seat
Side, described generating laser is arranged in fixed seat.
6. in measurement micro-pipe according to claim 1 the device of light oil boundary layer flow body thickness it is characterised in that described
Micro-pipe is:Glass-micropipe, resin micro-pipe.
7. in measurement micro-pipe according to claim 1 the device of light oil boundary layer flow body thickness it is characterised in that described
Image collector is set to high accuracy video camera.
8. the device measuring light oil boundary layer flow body thickness in micro-pipe according to claim 1 is it is characterised in that also wrap
Include：Glass guide channel, described glass guide channel fills medium solution, and described micro-pipe is placed in described medium.
9. in measurement micro-pipe according to claim 1 the device of light oil boundary layer flow body thickness it is characterised in that described
Noble gases steel cylinder is nitrogen cylinder.
10. in the measurement micro-pipe according to any one of claim 1-9 light oil boundary layer flow body thickness device, its feature
It is, described image display is notebook computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620446995.9U CN205957907U (en) | 2016-05-17 | 2016-05-17 | Device of light oil boundary layer fluid thickness in measurement microtubule |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620446995.9U CN205957907U (en) | 2016-05-17 | 2016-05-17 | Device of light oil boundary layer fluid thickness in measurement microtubule |
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| Publication Number | Publication Date |
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| CN205957907U true CN205957907U (en) | 2017-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620446995.9U Expired - Fee Related CN205957907U (en) | 2016-05-17 | 2016-05-17 | Device of light oil boundary layer fluid thickness in measurement microtubule |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112880567A (en) * | 2021-01-08 | 2021-06-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Boundary layer thickness measuring method |
| CN114211111A (en) * | 2021-11-16 | 2022-03-22 | 南方科技大学 | Laser processing device, method and apparatus |
-
2016
- 2016-05-17 CN CN201620446995.9U patent/CN205957907U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112880567A (en) * | 2021-01-08 | 2021-06-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Boundary layer thickness measuring method |
| CN114211111A (en) * | 2021-11-16 | 2022-03-22 | 南方科技大学 | Laser processing device, method and apparatus |
| CN114211111B (en) * | 2021-11-16 | 2024-06-21 | 南方科技大学 | Laser processing device, method and equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170215 Termination date: 20190517 |
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