CN110308071A - A kind of rotating interfacial tensimeter and its two-phase volume measuring method - Google Patents
A kind of rotating interfacial tensimeter and its two-phase volume measuring method Download PDFInfo
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- CN110308071A CN110308071A CN201910534986.3A CN201910534986A CN110308071A CN 110308071 A CN110308071 A CN 110308071A CN 201910534986 A CN201910534986 A CN 201910534986A CN 110308071 A CN110308071 A CN 110308071A
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000012530 fluid Substances 0.000 claims abstract description 26
- 239000012071 phase Substances 0.000 claims description 100
- 238000005259 measurement Methods 0.000 claims description 13
- 239000008385 outer phase Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 239000007791 liquid phase Substances 0.000 description 8
- 239000003921 oil Substances 0.000 description 8
- 238000005119 centrifugation Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000003384 imaging method Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 3
- 240000008067 Cucumis sativus Species 0.000 description 2
- 235000010799 Cucumis sativus var sativus Nutrition 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000008400 supply water Substances 0.000 description 2
- 238000012937 correction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F22/00—Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
- G01N13/02—Investigating surface tension of liquids
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a kind of rotating interfacial tensimeter and its two-phase volume measuring methods, including image capture mechanism and sample tube, two-phase fluid is preinstalled in sample tube, it is connected on sample tube and drives its rotating mechanism for doing centrifugal rotation, image capture mechanism successively observes and measures the shape geometrical variations of the interior phase in sample tube, the surface area and volume of the volume ratio of inside and outside two-phase and interior phase rotation drop, while the corresponding shape geometrical variations for calculating foreign minister.The present invention will rotate the parameters such as volume change, the oil-water ratio variation of drop and be accurately calculated and corrected in real time using dynamic capture image-forming principle, to provide data support to calibrate and correcting actual interfacial tension value.
Description
Technical field
The present invention relates to rotating interfacial tensimeters, and in particular to a kind of rotating interfacial tensimeter and its two-phase volume are surveyed
Amount method.
Background technique
Still there are a large amount of Residual oils to stay in stratum after typical oilfield self-spray and water flood recovery, it may be blocked in rock crevice or
In the pore of soil, also it can adhere on palisades.It is intended to be caused to flow the interfacial tension for just needing to reduce crude oil and oil displacement agent, makes
Interfacial tension, which reduces by three orders of magnitude, can make Residual oil volume reduce half, theoretical if reducing interfacial tension by four orders of magnitude
Oil displacement efficiency up to 100%.Therefore, it is necessary to carry out the research of low interfacial tension phenomenon between crude oil and oil displacement agent, grinding
Study carefully the low or ultralow interfacial tension that measured between crude oil and oil displacement agent in work.
Interface refers to the interface between two-phase different material.Because of phase difference, there are solid-state phase and liquid phase, solid-state phase and gas
State phase, liquid phase and the interface between liquid phase and liquid phase and gaseous state phase.Here the interface addressed refers to the boundary of two-phase fluid
Face, i.e. liquid phase and the interface between liquid phase and liquid phase and gaseous state phase.Interface between liquid phase and gaseous state phase also often claims
For surface.
The principle of existing rotation drop method measurement is to find out interfacial tension from the shape and geometric dimension of drop.Allow two-phase fluid
Rotation, is in them among certain centrifugal force field.In centrifugal force field, the small fluid of density edge in the big fluid of density
Rotation axis forms a rotation drop.In this state, certain geometric dimensions of measurement rotation drop shape, it is then several by what is measured
What size and the parameter for forming rotation drop-wise state substitute into rotation drop method interfacial tension survey calculation formula, and then calculate interface
Tension value.
But existing rotating interfacial tensimeter, due to needing high speed rotation, it is necessary to have a rotational power plant, make
Sample " at drop " is measured, certain mass exchange especially can occur in two-phase intersection each component, lead to the object phase measured when injection
Volume has differences with actual object phase volume, and in high speed rotation, and the impurity in each object phase component can also exchange,
Such as Cucumber can enter interior phase because of centrifugation outside to inside, it is interior to enter foreign minister, especially oil supply water volume because of centrifugation to substance
Than bringing variation, so that the accuracy of interfacial tension is influenced, and existing rotating interfacial tensimeter product is in measurement two-phase mixture
There are technical blank in terms of product variation, the especially variation of measurement oil-water ratio.
In conclusion need at present it is a kind of can more precise measurement not between jljl phase volume change rotation drop interface
Power instrument.
Summary of the invention
The technical problem to be solved by the present invention is to existing rotating interfacial tensimeters to be unable to accurate judgement not jljl phase
Between volume change, especially cannot accurately measure the variation of oil-water ratio, cause measurement inaccuracy problem.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that providing a kind of rotation drop interfacial tension
Instrument, including image capture mechanism and sample tube are preinstalled with two-phase fluid in the sample tube, connect on the sample tube
Have and drive its rotating mechanism for doing centrifugal rotation, image capture mechanism successively observes and measures interior in the sample tube
The shape geometrical variations of phase, the surface area and volume of the volume ratio of inside and outside two-phase and interior phase rotation drop, and meanwhile it is corresponding
Calculate the shape geometrical variations of foreign minister.
In the above scheme, the volume calculation formula of the interior phase rotation drop are as follows:
Wherein
The formula shows that coordinate system is constructed as origin in the upper left corner of image using the image capture mechanism, is caught with the imaging
It catches the interior phase rotation drop profile that mechanism is shown and is set as x in the projecting cell of the coordinate system x-axis directioni, and xiValue range be set as
(x1, xn), using each pixel as basic unit, in the formula:
di- for the x of arbitrary valuei, projection value of the interior phase rotation drop profile in coordinate system y-axis direction；
Vi- interior the phase rotates the elementary volume, volume element of drop；
The volume of the V-interior phase rotation drop.
In the above scheme, in the formula:
dxThe physical length of the obtained image pixel of-rotating interfacial tensimeter calibration in the direction of the x axis, mm/
pixel；
dyThe physical length of the obtained image pixel of-rotating interfacial tensimeter calibration in the y-axis direction, mm/
pixel。
It in the above scheme, further include the background light source positioned opposite with the image capture mechanism, the sample tube
It is arranged between the background light source and image capture mechanism, the rotary shaft of the sample tube and the background light source and imaging
Capture the orthogonal thereto distribution of line of mechanism.
In the above scheme, further include control system, the control system respectively with the background light source, image capture machine
Structure and rotating mechanism connection, the control system, which starts the rotating mechanism, makes the sample tube do centrifugal rotation movement,
And the geometric dimension of the rotation drop in the sample tube is measured by the image capture mechanism.
In the above scheme, the image capture mechanism is reading microscope or microimaging head.
The present invention also provides a kind of two-phase volume measuring methods of above-mentioned rotating interfacial tensimeter, including following step
It is rapid:
Two-phase fluid is injected in the sample tube and is closed；
The sample tube for installing sample is stable along axis rotation, so that two-phase fluid is in certain centrifugal force field
Among, the small fluid of density forms a rotation drop along rotation axis in the big fluid of density；
The image that interior mutually rotation drop is absorbed by the image capture mechanism goes out interior mutually rotation by image or image measurement and drips
Geometric dimension.
In the above scheme, when injecting two-phase fluid in the sample tube, first by the high density phase in two-phase fluid
It full of the sample tube and closes, then low-density is mutually squeezed into micro syringe by the rubber end plug of the sample tube
Sample cell；
The geometric dimension measured and the volume parameter for forming rotation drop-wise state are substituted into following calculation formula:
Wherein
The formula shows that coordinate system is constructed as origin in the upper left corner of image using the image capture mechanism, is caught with the imaging
It catches the interior phase rotation drop profile that mechanism is shown and is set as x in the projecting cell of the coordinate system x-axis directioni, and xiValue range be set as
(x1, xn), using each pixel as basic unit, in the formula:
di- for the x of arbitrary valuei, projection value of the interior phase rotation drop profile in coordinate system y-axis direction；
Vi- interior the phase rotates the elementary volume, volume element of drop；
The volume of the V-interior phase rotation drop.
dxThe physical length of the obtained image pixel of-rotating interfacial tensimeter calibration in the direction of the x axis, mm/
pixel；
dyThe physical length of the obtained image pixel of-rotating interfacial tensimeter calibration in the y-axis direction, mm/
Pixel:
Subtract the interior phase that above-mentioned formula is calculated with the total volume that the image capture mechanism observes again and rotates drop volume
As outer phase volume.
In the above scheme, when obtaining shooting image by the image capture mechanism, the bias light is opened simultaneously
Source.
In the above scheme, the sample tube adjusts revolving speed from low to high, and dripping interior phase rotation, stable, size is suitable
Be presented in the angular field of view of the image capture mechanism.
The present invention captures image-forming principle using dynamic, the parameters such as the volume change of rotation drop, oil-water ratio variation is carried out real
When accurately calculate and correct, thus for calibrate and correct actual interfacial tension value provide data support.
Detailed description of the invention
Fig. 1 is equipment principle schematic diagram of the invention；
Fig. 2 is shooting imaging schematic diagram of the image capture mechanism in the present invention to two-phase fluid.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings of the specification.
The invention discloses a kind of rotating interfacial tensimeters and its two-phase volume measuring method, those skilled in the art can
To use for reference present disclosure, it is suitably modified realization of process parameters.It is important to note that all similar substitutions and modifications are to this
It is it will be apparent that they are considered as being included in the present invention for the technical staff of field, and related personnel obviously can be not
It is detached from the content of present invention, content described herein is modified on the basis of spirit and scope or appropriate changes and combinations, come real
Now and using the technology of the present invention.
In invention, unless otherwise stated, Science and Technology noun used herein has those skilled in the art
The normally understood meaning of member institute.
As shown in Figure 1, a kind of rotating interfacial tensimeter provided by the invention, internal includes bias light positioned opposite
Source 1 and image capture mechanism 2, image capture mechanism 2 preferably use reading microscope or microimaging head.3 cloth of sample tube
It is placed between background light source 1 and image capture mechanism 2, the rotary shaft and background light source 1 and image capture mechanism 2 of sample tube 3
The orthogonal thereto distribution of line, with obtain more accurately observe visual angle.Two-phase fluid, sample tube 3 are preinstalled in sample tube 3
On be also connected with and drive its rotating mechanism 4 for doing centrifugal rotation, arrow direction of the rotary shaft in Fig. 1, sample tube 3 in Fig. 1
The dash area at interior center be in mutually rotation drop, remainder be outer phase medium, image capture mechanism 2 for observation and according to
The shape geometrical variations of interior phase in secondary measurement sample tube 3, the volume ratio of inside and outside two-phase and interior phase rotation drop
The parameters such as surface area and volume can accordingly calculate the shape geometrical variations of foreign minister since total volume is known quantity simultaneously.
It is closed it is well known that interfacial tension measured by rotating interfacial tensimeter and two-phase volume ratio (i.e. oil-water ratio) have
When in use, in two-phase intersection each component certain mass exchange can occur for connection property, rotating interfacial tensimeter, when leading to injection
The object phase volume of measurement has differences with actual object phase volume, and in high speed rotation, the impurity in each object phase component
It can exchange, such as Cucumber can enter interior phase because of centrifugation outside to inside, it is interior to enter foreign minister because of centrifugation to substance, especially
Oil supply water volume ratio brings variation, to influence the accuracy of interfacial tension, therefore the present invention can directly observe measurement two-phase mixture
Product variation, phase rotation drop volume and oil-water ratio especially in measurement, this is provided greatly to correct the accuracy of practical interfacial tension
The data of amount support, so that more accurately interfacial tension is provided fundamental basis to obtain.
The invention also includes the intelligence computation control system for being built in rotating interfacial tensimeter, the control system respectively with
Background light source 1, image capture mechanism 2 and rotating mechanism 4 connect, and control system makes sample tube 3 for starting rotating mechanism 4
Centrifugal rotation movement is done, and the geometric dimension that the rotation in sample tube 3 is dripped, the control system are measured by image capture mechanism 2
System binds directly the operating system use of existing interfacial tensimeter, eliminate cost of labor and caused by error.
Preferably, the present invention is according to above-mentioned rotating interfacial tensimeter, it is also proposed that a kind of to utilize rotation drop interface
Power instrument meter calculates the calculation formula of the volume of interior mutually rotation drop:
Wherein
As shown in Fig. 2, the formula using image capture mechanism 2 show image the upper left corner construct coordinate system as origin, at
Interior phase rotation drop profile as shown in capturing mechanism 2 is set as x in the projecting cell of coordinate system x-axis directioni, and xiValue range set
For (x1, xn), the ellipse in Fig. 2 be in mutually rotation drop profile, external rectangle is foreign minister's profile, with each pixel
Putting is basic unit, in the formula:
di- for the x of arbitrary valuei, projection value of the interior phase rotation drop profile in coordinate system y-axis direction；
Vi- interior phase rotates the elementary volume, volume element of drop；
The volume of the interior phase rotation drop of V-.
dx- rotating interfacial tensimeter calibrates the physical length of obtained image pixel in the direction of the x axis, mm/pixel；
dyThe physical length of the obtained image pixel of-rotating interfacial tensimeter calibration in the y-axis direction, mm/pixel, further
, dx、dyIt is statisticallyd analyze based on practical experience with error measure for staff, for the x of arbitrary valuei, automatic typing system in advance
The correspondence calibration correction value of system.
In addition, the present invention also provides a kind of sides for carrying out two-phase cubing using above-mentioned rotating interfacial tensimeter
Method, specifically includes the following steps:
1, two-phase fluid is injected in sample tube 3 and is closed, and the high density in two-phase fluid is mutually first preferably full of sample
Product test tube 3 is simultaneously closed, then low-density is mutually squeezed into sample cell by the rubber end plug of sample tube 3 with micro syringe；
2, the sample tube 3 for installing sample is installed on rotating mechanism 4, allows rotating mechanism 4 that sample tube 3 is driven to stablize
Along axis rotate, be in two-phase fluid among certain centrifugal force field, the small fluid of density edge in the big fluid of density
Rotation axis forms a rotation drop, and the image of interior phase rotation drop is absorbed by image capture mechanism 2, is gone out by image or image measurement
The geometric dimension of interior phase rotation drop, during this, rotating mechanism 4 preferably adjusts revolving speed from low to high, keeps interior phase rotation drop steady
It is fixed, sizeable to be completely presented in the angular field of view of image capture mechanism 2, it is clapped by image capture mechanism 2
When taking the photograph image, background light source 1 is opened simultaneously；
3, the geometric dimension measured and the volume parameter for forming rotation drop-wise state are substituted into following calculation formula:
Wherein
The formula shows that coordinate system is constructed as origin in the upper left corner of image using image capture mechanism 2, with image capture mechanism 2
The interior phase rotation drop profile of display is set as x in the projecting cell of coordinate system x-axis directioni, and xiValue range be set as (x1, xn), with
Each pixel is basic unit, in the formula:
di- for the x of arbitrary valuei, projection value of the interior phase rotation drop profile in coordinate system y-axis direction；
Vi- interior phase rotates the elementary volume, volume element of drop；
The volume of the interior phase rotation drop of V-.
dx- rotating interfacial tensimeter calibrates the physical length of obtained image pixel in the direction of the x axis, mm/pixel；
dy- rotating interfacial tensimeter calibrates the physical length of obtained image pixel in the y-axis direction, mm/pixel:
Subtracting the interior phase rotation drop volume that above-mentioned formula is calculated with the total volume that image capture mechanism 2 observes again is
The variation of outer phase volume, such two-phase volume ratio can calculate.
The present invention can not only measure the shape geometry of inside and outside two-phase compared with existing rotating interfacial tensimeter
Change in size, the parameters such as the surface area and volume of the volume ratio of inside and outside two-phase and interior phase rotation drop, and do not need as surveying
It measures interfacial tension and interior phase is rotated into drop elongation like that, step is also more simplified.
The present invention captures image-forming principle using dynamic, the parameters such as the volume change of rotation drop, oil-water ratio variation is carried out real
When accurately calculate and correct, thus for calibrate and correct actual interfacial tension value provide data support.
The present invention is not limited to above-mentioned preferred forms, and anyone should learn that the knots made under the inspiration of the present invention
Structure variation, the technical schemes that are same or similar to the present invention are fallen within the scope of protection of the present invention.
Claims (10)
1. a kind of rotating interfacial tensimeter, which is characterized in that including image capture mechanism and sample tube, the sample tube
It is inside preinstalled with two-phase fluid, is connected on the sample tube and drives its rotating mechanism for doing centrifugal rotation, the image capture
Mechanism successively observes and measures the shape geometrical variations of the interior phase in the sample tube, the volume ratio of inside and outside two-phase, with
And the surface area and volume of interior phase rotation drop, while the corresponding shape geometrical variations for calculating foreign minister.
2. rotating interfacial tensimeter as described in claim 1, which is characterized in that the volume of the interior phase rotation drop calculates public
Formula are as follows:
Wherein
The formula shows that coordinate system is constructed as origin in the upper left corner of image using the image capture mechanism, with the image capture machine
The interior phase rotation drop profile that structure is shown is set as x in the projecting cell of the coordinate system x-axis directioni, and xiValue range be set as (x1,
xn), using each pixel as basic unit, in the formula:
di- for the x of arbitrary valuei, projection value of the interior phase rotation drop profile in coordinate system y-axis direction；
Vi- interior the phase rotates the elementary volume, volume element of drop；
The volume of the V-interior phase rotation drop.
3. rotating interfacial tensimeter as claimed in claim 2, which is characterized in that in the formula:
dxThe physical length of the obtained image pixel of-rotating interfacial tensimeter calibration in the direction of the x axis, mm/pixel；
dyThe physical length of the obtained image pixel of-rotating interfacial tensimeter calibration in the y-axis direction, mm/pixel.
4. rotating interfacial tensimeter as described in claim 1, which is characterized in that further include and image capture mechanism phase
To the background light source of arrangement, the sample tube is arranged between the background light source and image capture mechanism, the sample examination
The orthogonal thereto distribution of line of the rotary shaft of pipe and the background light source and image capture mechanism.
5. rotating interfacial tensimeter as claimed in claim 4, which is characterized in that it further include control system, the control system
System is connect with the background light source, image capture mechanism and rotating mechanism respectively, and the control system starts the whirler
Structure makes the sample tube do centrifugal rotation movement, and the rotation in the sample tube is measured by the image capture mechanism
The geometric dimension of drop.
6. rotating interfacial tensimeter as described in claim 1, which is characterized in that the image capture mechanism is that reading is micro-
Mirror or microimaging head.
7. the two-phase volume measuring method of the rotating interfacial tensimeter as described in any one of claim 1 to 6, feature
It is, comprising the following steps:
Two-phase fluid is injected in the sample tube and is closed；
By the sample tube for installing sample it is stable along axis rotate, make two-phase fluid be in certain centrifugal force field it
In, the small fluid of density forms a rotation drop along rotation axis in the big fluid of density；
The image that interior mutually rotation drop is absorbed by the image capture mechanism goes out the several of interior mutually rotation drop by image or image measurement
What size.
8. the two-phase volume measuring method of rotating interfacial tensimeter as claimed in claim 7, which is characterized in that in the sample
In product test tube when injection two-phase fluid, the high density in two-phase fluid is mutually first full of the sample tube and is closed, then will be low
Density mutually squeezes into sample cell by the rubber end plug of the sample tube with micro syringe；
The geometric dimension measured and the volume parameter for forming rotation drop-wise state are substituted into following calculation formula:
Wherein
The formula shows that coordinate system is constructed as origin in the upper left corner of image using the image capture mechanism, with the image capture machine
The interior phase rotation drop profile that structure is shown is set as x in the projecting cell of the coordinate system x-axis directioni, and xiValue range be set as (x1,
xn), using each pixel as basic unit, in the formula:
di- for the x of arbitrary valuei, projection value of the interior phase rotation drop profile in coordinate system y-axis direction；
Vi- interior the phase rotates the elementary volume, volume element of drop；
The volume of the V-interior phase rotation drop.
dxThe physical length of the obtained image pixel of-rotating interfacial tensimeter calibration in the direction of the x axis, mm/pixel；
dyThe physical length of the obtained image pixel of-rotating interfacial tensimeter calibration in the y-axis direction, mm/pixel:
Subtracting the interior phase rotation drop volume that above-mentioned formula is calculated with the total volume that the image capture mechanism observes again is
Outer phase volume.
9. the two-phase volume measuring method of rotating interfacial tensimeter as claimed in claim 7, which is characterized in that passing through
When stating image capture mechanism acquisition shooting image, the background light source is opened simultaneously.
10. the two-phase volume measuring method of rotating interfacial tensimeter as claimed in claim 7, which is characterized in that the sample
Product test tube adjusts revolving speed from low to high, makes interior phase rotation drop is stable, sizeable to be presented on the image capture mechanism
In angular field of view.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111060426A (en) * | 2019-12-30 | 2020-04-24 | 徐开 | Control system and method for automatically locking and adjusting position of rotary droplet |
| CN111122390A (en) * | 2019-12-30 | 2020-05-08 | 徐开 | Interface tension measuring method based on artificial intelligence model |
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| US4250741A (en) * | 1979-04-30 | 1981-02-17 | The Regents Of The University Of Minnesota | Precision spinning drop interfacial tensiometer |
| US5615276A (en) * | 1995-07-14 | 1997-03-25 | National Science Council | Method of measuring low interfacial tension by pendant drop digitization |
| CN1419116A (en) * | 2002-12-26 | 2003-05-21 | 刘华 | Method and device of horizontal rotary drop method for measuring contact angle |
| CN102749269A (en) * | 2012-07-05 | 2012-10-24 | 邢义良 | Determination method and determination apparatus for contact angle and interfacial tension |
| CN104568672A (en) * | 2014-12-04 | 2015-04-29 | 上海梭伦信息科技有限公司 | Device and method for testing interfacial tension and contact angle by adopting spinning drop method under ultrahigh pressure and at high temperature |
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2019
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| US4250741A (en) * | 1979-04-30 | 1981-02-17 | The Regents Of The University Of Minnesota | Precision spinning drop interfacial tensiometer |
| US5615276A (en) * | 1995-07-14 | 1997-03-25 | National Science Council | Method of measuring low interfacial tension by pendant drop digitization |
| CN1419116A (en) * | 2002-12-26 | 2003-05-21 | 刘华 | Method and device of horizontal rotary drop method for measuring contact angle |
| CN102749269A (en) * | 2012-07-05 | 2012-10-24 | 邢义良 | Determination method and determination apparatus for contact angle and interfacial tension |
| CN104568672A (en) * | 2014-12-04 | 2015-04-29 | 上海梭伦信息科技有限公司 | Device and method for testing interfacial tension and contact angle by adopting spinning drop method under ultrahigh pressure and at high temperature |
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| Title |
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| 张彩霞等: "SVT20旋转滴界面张力仪测量原理及影响因素分析", 《石油钻探技术》, vol. 39, no. 1, 31 January 2011 (2011-01-31), pages 1 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111060426A (en) * | 2019-12-30 | 2020-04-24 | 徐开 | Control system and method for automatically locking and adjusting position of rotary droplet |
| CN111122390A (en) * | 2019-12-30 | 2020-05-08 | 徐开 | Interface tension measuring method based on artificial intelligence model |
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