CN108168768B - Breakthrough of gas pressure test device and method - Google Patents
Breakthrough of gas pressure test device and method Download PDFInfo
- Publication number
- CN108168768B CN108168768B CN201711182357.6A CN201711182357A CN108168768B CN 108168768 B CN108168768 B CN 108168768B CN 201711182357 A CN201711182357 A CN 201711182357A CN 108168768 B CN108168768 B CN 108168768B
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- cylinder body
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- gas
- seal section
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- 238000012360 testing method Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims description 13
- 238000007789 sealing Methods 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 30
- 238000000465 moulding Methods 0.000 claims description 6
- 230000008961 swelling Effects 0.000 claims description 5
- 238000012806 monitoring device Methods 0.000 claims description 4
- 238000010998 test method Methods 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 44
- 239000000440 bentonite Substances 0.000 description 7
- 229910000278 bentonite Inorganic materials 0.000 description 7
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 7
- 239000002927 high level radioactive waste Substances 0.000 description 7
- 230000004888 barrier function Effects 0.000 description 6
- 239000011435 rock Substances 0.000 description 5
- 239000004927 clay Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009375 geological disposal Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
- 235000002639 sodium chloride Nutrition 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L13/00—Devices or apparatus for measuring differences of two or more fluid pressure values
Abstract
A kind of breakthrough of gas pressure test device disclosed by the invention, is related to Nuclear waste disposal technical field.The test device includes the cylinder body to contain sample, and the inner wall of cylinder body forms seal section, and described cylinder body one end is inlet end, and the other end is outlet side, and the inlet end is connected with air delivery device, and the outlet side is connected with gas controlling device.Breakthrough of gas pressure test device disclosed by the invention, seal section is processed on the inner wall of cylinder body, for with expansile sample, after water suction, sample expansion blockage seal section realizes sealing, so that sample and cylinder body are no longer smooth contact surface in the vertical direction, it avoids gas from breaking through from the interface of sample and cylinder body, effectively improves the accuracy of breakthrough of gas pressure testing results.
Description
Technical field
The present invention relates to Nuclear waste disposal technical fields, and in particular to a kind of test high level radioactive waste repository padded coaming
The device and method of breakthrough of gas pressure.
Background technique
In recent years, flourishing with national economy, energy shortage is increasingly becoming the serious problem that China is faced, in
State increasingly payes attention to the utilization and development of nuclear energy.However the utilization of nuclear energy, a large amount of nuke rubbish will be generated, therefore at nuke rubbish
It sets to have become and compels solving the problems, such as.
Disposition for high-level waste, generally accepted feasible program is that high-level waste is embedded in ground in international community at present
In the good ground of lower 500~1000m depth: i.e. by high-level waste after curing process, filling, being stored at geological disposal
In library, which is commonly referred to as " Hlw Geological Repository ", hereinafter referred to as " disposition library ".
Dispose library mentality of designing, be generally adopted by " more barrier systems ", including wall rock geology barrier, be based on bentonite
Artificial barrier and waste storage container barrier as padded coaming.The high-level waste of glass solidification is encapsulated in special container
In, this container is manufactured with materials such as very corrosion resistant high-grade alloy steel or copper;When disposition, solidify the week of container
The good bentonite clay material of absorption property will also be filled by enclosing, and constitute multiple tracks " artificial barrier " in this way;In addition to this, there are also excellent
" natural barrier ".High-level waste library is built in the stabilization geological stratification of several hundred meters of deep undergrounds (such as granite, clay rock, rock salt),
Over time, the underground water in country rock will gradually be corroded into bentonite clay material from surrounding, and bentonite will gradually absorb water
Expansion, so that the gap between bentonite block and between bentonite block and country rock is filled up, to play sealing function.With
The evolution of time, due to complicated physical-chemical reaction in disposition library, gas will be generated gradually, these gases from
The following aspects (1) metal can corrodes the hydrogen of generation in bentonite and groundwater environment;(2) microbial decomposition is led
Cause organic matter corruption and the gases such as carbon dioxide, methane, nitrogen of generation;(3) hydrogen that radiation effects generates.With these gas
The continuous generation of body, the air pressure disposed in library gradually rise, and the gas of accumulation will outwardly escape, and for breakthrough of gas pressure
The test of force value usually carries out in triaxial pressure room at present, but since there are relatively smooth to connect between sample and device
Contacting surface, and then cause measurement result inaccurate.
Therefore, in view of problem above, it is necessary to propose that one kind can accurately measure padded coaming breakthrough of gas pressure size
Device and method, to avoid due to the feelings for causing test result inaccuracy between sample and cylinder body there are smooth contact surface
Condition.
Summary of the invention
In view of this, the present invention proposes a kind of breakthrough of gas pressure test device, including the cylinder body to contain sample, institute
The inner wall for stating cylinder body forms seal section, the setting of seal section, for expansile sample, after water suction, sample is swollen
Swollen plug for seal section is realized sealing, so that being no longer in the vertical direction smooth contact surface between sample and cylinder body, is kept away
Exempt from gas to break through from the interface of sample and cylinder body, effectively improves the accuracy of breakthrough of gas pressure testing results.
The breakthrough of gas pressure test device that purpose according to the present invention proposes, including the cylinder body to contain sample, institute
Stating cylinder body one end is inlet end, and the other end is outlet side, and the inlet end is connected with air delivery device, and the outlet side is connected with gas
Body monitoring device, the inner wall of the cylinder body form seal section, when test, are in close contact between sample and the inboard wall of cylinder block with close
Envelope.
Preferably, the cylinder body inlet end, which is detachably fixed, is connected with pressure head, and air inlet is formed on the pressure head, described
Air inlet connects air delivery device;The cylinder body outlet side, which is detachably fixed, is connected with pedestal, forms venthole on the pedestal,
The venthole connects gas controlling device;The cylinder interior forms hollow cavity, and the sample is contained in hollow cavity, institute
Seal section is stated to take shape on the inner wall of cylinder body and sample contacts.
Preferably, seal section height HtWith specimen height Hsample, cylinder diameter DtWith specimen finish DsampleJust like ShiShimonoseki
System:
Preferably, the seal section is the equally distributed multiple groups groove of axial direction along cylinder body, and every group of groove is along inboard wall of cylinder block
Setting in one week or subsection setup.
Preferably, the depth of each groove is 0.3mm, width 1mm, and the spacing between two adjacent groups groove is
4mm。
Preferably, the pressure head and pedestal have been separately formed protrusion, and the protrusion is embedded in cylinder body hollow cavity.
A kind of breakthrough of gas method for testing pressure, using above-mentioned test device, the test device include cylinder body, pressure head and
Pedestal, the cylinder interior form hollow cavity, and sample is contained in hollow cavity, on the inner wall of the cylinder body and sample contacts at
Type has seal section, and air inlet is formed on the pressure head, forms venthole on pedestal;
The test method the following steps are included:
Step 1: the sample made is put into cylinder body hollow cavity at seal section.
Step 2: increase the humidity of the test space, sample water swelling plug for seal section, until sealing.
Step 3: pressure head and pedestal are separately fixed to inlet end and the outlet side of cylinder body by bolt, formed on pressure head
Air inlet connect with air delivery device, molding venthole is connect with gas controlling device on pedestal.
Step 4: gradually increasing the gas pressure of air inlet since 0, to monitor lasting air-flow at pedestal venthole
When, then pressure at two ends difference is the breakthrough of gas pressure of sample.
Preferably, test space temperature is 20 DEG C.
Compared with prior art, a kind of test high level radioactive waste repository padded coaming breakthrough of gas pressure disclosed by the invention
Device the advantages of be:
Breakthrough of gas pressure test device disclosed by the invention includes the cylinder body for containing sample, the inner wall molding of the cylinder body
There is seal section, processes seal section on the inner wall of cylinder body, in this way, for expansile sample, after water suction, examination
Sample expansion blockage seal section realizes sealing, so that sample and cylinder body are no longer in the vertical direction smooth contact surfaces, keeps away
Exempt from gas to break through from the interface of sample and cylinder body, effectively improves the accuracy of breakthrough of gas pressure testing results.
Detailed description of the invention
It, below will be to embodiment or existing for the clearer technical solution for illustrating the embodiment of the present invention or the prior art
Attached drawing needed in technical description does simple introduction, it is clear that, the accompanying drawings in the following description is only this hair
Bright some embodiments, it will be clear to the skilled person that without creative efforts, may be used also
Other accompanying drawings can also be obtained according to these attached drawings.
Fig. 1 is 1 sectional view 1 of embodiment.
Fig. 2 is 1 sectional view 2 of embodiment.
Fig. 3 is 2 sectional view 1 of embodiment.
Fig. 4 is 2 sectional view 2 of embodiment
Parts title representated by digital or letter in figure are as follows:
1, pressure head;2, bolt;3, protrusion;4, groove;5, sample;6, cylinder body;7, venthole;8, pedestal;9, air inlet;
10, hollow cavity.
Specific embodiment
A specific embodiment of the invention is described briefly with reference to the accompanying drawing.Obviously, described embodiment is only
It is a part of the embodiments of the present invention, rather than whole embodiments, based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, belongs to the scope of protection of the invention.
Fig. 1-Fig. 4 shows preferred embodiments of the present invention, has carried out detailed cut open to structure from different angles respectively
Analysis.
Embodiment 1
Breakthrough of gas pressure test device as shown in Figs. 1-2 includes the cylinder body 6 to contain sample 5, and 6 one end of cylinder body is
Inlet end, the other end are outlet side, and inlet end is connected with air delivery device, and outlet side is connected with gas controlling device, cylinder body 6 it is interior
Wall forms seal section, and sealing segment structure is unlimited, be in close contact when meeting test, between 6 inner wall of 5 water swelling of sample and cylinder body with
Sealing is Non-smooth surface contact surface between sample 5 and cylinder body 6.Wherein air delivery device can be inert gas, and gas-monitoring
Device can be gas leak detection instrument or flowmeter.Different time intervals carry out gas prison when using gas leak detector
It surveys, when gas continuously overflows, that is, can determine that gas is continuously broken through.And when flowmeter being used to carry out gas-monitoring, when detection gas
When body flow increases suddenly, that is, it can determine that gas is continuously broken through.
Further, 6 inlet end of cylinder body has been bolted pressure head 1, and air inlet 9 is formed on pressure head 1, and air inlet 9 connects
Air delivery device;6 outlet side of cylinder body has been bolted pedestal 8, and venthole 7 is formed on pedestal 8, and venthole 7 connects gas-monitoring
Device.Hollow cavity 10 is formed inside cylinder body 6, sample 5 is contained in hollow cavity 10, and seal section takes shape in cylinder body 6 and connects with sample 5
On the inner wall of touching, 5 water swelling plug for seal section of sample is to seal.Wherein, pressure head 1 and pedestal 8 setting so that cylinder body 6 it is close
It is more preferable to seal effect, and cylinder body 6 and the connection type of pressure head 1 and bottom 8 are unlimited, are bolted only wherein preferred embodiment.
Further, seal section height HtWith 5 height H of samplesample, 6 internal diameter D of cylinder bodytWith 5 diameter D of samplesampleJust like
Lower relationship:
It is demonstrated experimentally that when place in this connection when, can be with plug for seal section, while again not after 5 water swelling of sample
External rock mass can be caused to damage because expansive force is excessive.
Further, seal section is the equally distributed multiple groups groove 4 of axial direction along cylinder body 6, and every group of groove 4 is along cylinder body 6
Setting in wall one week or subsection setup.
Further, the depth of each groove 4 is 0.3mm, width 1mm, and the spacing between two adjacent groups groove 4 is
4mm。
Embodiment 2
Breakthrough of gas pressure test device as shown in Figure 3-4, remaining is same as Example 1, the difference is that:
Pressure head 1 and pedestal 8 have been separately formed protrusion 3, and protrusion 3 is embedded in 6 hollow cavity 10 of cylinder body.Wherein protrusion 3
It is used cooperatively with pressure head 1 and pedestal 8, facilitates the installation of sealing ring, so that the sealing effect of whole device is more preferable.
Breakthrough of gas pressure test device disclosed by the invention processes seal section on the inner wall of cylinder body 6, for swollen
For the sample 5 of swollen property, after water suction, 5 expansion blockage seal section of sample realizes sealing, so that sample 5 and cylinder body 6
No longer it is smooth contact surface in the vertical direction, avoids gas from breaking through from the interface of sample 5 and cylinder body 6, effectively improve gas
The accuracy of body breakthrough pressure test result.
The breakthrough of gas pressure test device of corresponding above-described embodiment, the present invention also propose a kind of breakthrough of gas pressure test
Method, this method realized using the device of above-described embodiment, test method the following steps are included:
Step 1: the sample 5 made is put into 6 hollow cavity 10 of cylinder body at seal section.
Step 2: increase the humidity of the test space, 5 expansion blockage seal section of sample, until sealing.
Pressure head 1 and pedestal 8: being separately fixed at inlet end and the outlet side of cylinder body 6 by step 3 by bolt 2, on pressure head 1
Molding air inlet 9 is connect with air delivery device, and molding venthole 7 is connect with gas controlling device on pedestal 8.
Step 4: gradually increasing the gas pressure of air inlet 9 since 0, lasting to monitor at 8 venthole 7 of pedestal
When air-flow, then pressure at two ends difference is the breakthrough of gas pressure of sample.
Further, test space temperature is 20 DEG C.
In conclusion breakthrough of gas pressure test device disclosed by the invention include contain sample cylinder body, cylinder body it is interior
Wall forms seal section, processes seal section on the inner wall of cylinder body, in this way, absorbing water for expansile sample
Later, sample expansion blockage seal section realizes sealing, so that sample is no longer smooth connect in the vertical direction with cylinder body
Contacting surface avoids gas from breaking through from the interface of sample and cylinder body, effectively improves the accuracy of breakthrough of gas pressure testing results.
The foregoing description of the disclosed embodiments makes professional and technical personnel in the field can be realized and use the present invention.
Various modifications to these embodiments mode will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit and scope of the present invention.Therefore, originally
Invention is not intended to be limited to the embodiments shown herein, and is to fit to the principles and novel features disclosed herein phase
Consistent widest scope.
Claims (7)
1. a kind of breakthrough of gas pressure test device, which is characterized in that including the cylinder body (6) to contain sample (5), the cylinder
Body (6) one end is inlet end, and the other end is outlet side, and the inlet end is connected with air delivery device, and the outlet side is connected with gas
Body monitoring device, the inner wall of the cylinder body (6) form seal section, and the seal section takes shape in cylinder body (6) and contacts with sample (5)
Inner wall on, the seal section be along cylinder body (6) the equally distributed multiple groups groove (4) of axial direction, every group of groove (4) is along cylinder body
(6) setting in inner wall one week or subsection setup, when test, close contact is between sample (5) and the cylinder body (6) inner wall to seal.
2. breakthrough of gas pressure test device according to claim 1, which is characterized in that cylinder body (6) inlet end can
Disassembly is fixedly connected with pressure head (1), is formed air inlet (9) on the pressure head (1), and the air inlet (9) connects air delivery device;
Cylinder body (6) outlet side, which is detachably fixed, to be connected with pedestal (8), is formed venthole (7) on the pedestal (8), it is described go out
Stomata (7) connects gas controlling device;It is formed hollow cavity (10) inside the cylinder body (6), the sample (5) is contained in hollow
In chamber (10).
3. breakthrough of gas pressure test device according to claim 2, which is characterized in that seal section height HtWith sample (5)
Height Hsample, cylinder body (6) internal diameter DtWith sample (5) diameter DsampleThere is following relationship:
4. breakthrough of gas pressure test device according to claim 3, which is characterized in that the depth of each groove (4)
Spending is 0.3mm, width 1mm, and the spacing between two adjacent groups groove (4) is 4mm.
5. breakthrough of gas pressure test device according to claim 4, which is characterized in that the pressure head (1) and pedestal (8)
It has been separately formed protrusion (3), in protrusion (3) insertion cylinder body (6) hollow cavity (10).
6. a kind of breakthrough of gas method for testing pressure, which is characterized in that using the described in any item test dresses of claim 1-5
It sets, the test device includes cylinder body (6), pressure head (1) and pedestal (8), hollow cavity (10) are formed inside the cylinder body (6),
Sample is contained in hollow cavity (10), forms seal section, the pressure head on the inner wall that the cylinder body (6) contacts with sample (5)
(1) it is formed on air inlet (9), venthole (7) is formed on pedestal (8);
The test method the following steps are included:
Step 1: the sample made (5) is put at cylinder body (6) hollow cavity (10) interior seal section;
Step 2: increase the humidity of the test space, sample (5) water swelling plug for seal section, until sealing;
Step 3: pressure head (1) and pedestal (8) is separately fixed to inlet end and the outlet side of cylinder body, pressure head by bolt (2)
(1) molding air inlet (9) connect with air delivery device on, and molding venthole (7) and gas controlling device connect on pedestal (8)
It connects;
Step 4: gradually increasing the gas pressure of air inlet (9) since 0, continues to monitor at pedestal (8) venthole (7)
Air-flow when, then the gas pressure difference of air inlet (9) and venthole (7) is the breakthrough of gas pressure of sample (5).
7. breakthrough of gas method for testing pressure according to claim 6, which is characterized in that test space temperature is 20 DEG C.
Priority Applications (4)
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CN201711182357.6A CN108168768B (en) | 2017-11-23 | 2017-11-23 | Breakthrough of gas pressure test device and method |
AU2018372341A AU2018372341B2 (en) | 2017-11-23 | 2018-09-07 | Gas escape pressure testing device and method |
RU2019118231A RU2723232C1 (en) | 2017-11-23 | 2018-09-07 | Device and method of experimental determination of gas breakthrough pressure |
PCT/CN2018/104638 WO2019100812A1 (en) | 2017-11-23 | 2018-09-07 | Gas escape pressure testing device and method |
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CN201711182357.6A CN108168768B (en) | 2017-11-23 | 2017-11-23 | Breakthrough of gas pressure test device and method |
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CN108168768B true CN108168768B (en) | 2019-03-01 |
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AU (1) | AU2018372341B2 (en) |
RU (1) | RU2723232C1 (en) |
WO (1) | WO2019100812A1 (en) |
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JPH08274350A (en) * | 1995-03-29 | 1996-10-18 | Yokogawa Electric Corp | Semiconductor pressure sensor and its manufacture |
US5889211A (en) * | 1995-04-03 | 1999-03-30 | Motorola, Inc. | Media compatible microsensor structure and methods of manufacturing and using the same |
DE102008043175A1 (en) * | 2008-10-24 | 2010-04-29 | Endress + Hauser Gmbh + Co. Kg | Relative pressure sensor |
CN201358783Y (en) * | 2009-02-23 | 2009-12-09 | 大庆油田有限责任公司 | Pressure flow integrated seal checking device |
DE102009028488A1 (en) * | 2009-08-12 | 2011-02-17 | Endress + Hauser Gmbh + Co. Kg | Relative pressure sensor |
CN202693192U (en) * | 2012-06-27 | 2013-01-23 | 龙泉市杰科汽车零部件有限公司 | Differential pressure sensor |
CN103776744B (en) * | 2012-10-19 | 2016-06-08 | 中国石油化工股份有限公司 | The detection method of a kind of rock sample three-dimensional permeability and detection system thereof |
WO2014158436A1 (en) * | 2013-03-24 | 2014-10-02 | Schlumberger Canada Limited | System and methodology for determining properties of a substance |
CN103556993B (en) * | 2013-11-07 | 2016-12-07 | 中国石油大学(北京) | Low permeability oil field plane Five-point method pattern carbon dioxide flooding emulation experiment analogy method |
CN204461880U (en) * | 2015-01-04 | 2015-07-08 | 中国石油天然气股份有限公司 | Core breakthrough pressure proving installation |
CN104792685B (en) * | 2015-04-23 | 2017-07-28 | 太原理工大学 | A kind of fractured coal and rock gas infiltration experiment device and method |
CN105547848B (en) * | 2016-01-13 | 2018-09-28 | 重庆科技学院 | A kind of mixing rock core test cabinet and mud stone breakthrough pressure test device |
CN108168768B (en) * | 2017-11-23 | 2019-03-01 | 中国矿业大学 | Breakthrough of gas pressure test device and method |
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2018
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WO2019100812A1 (en) | 2019-05-31 |
RU2723232C1 (en) | 2020-06-09 |
AU2018372341A1 (en) | 2019-06-27 |
AU2018372341A2 (en) | 2019-07-25 |
AU2018372341B2 (en) | 2020-10-15 |
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