CN1837774A - Apparatus for testing permeability coefficient of low-permeability rock medium - Google Patents
Apparatus for testing permeability coefficient of low-permeability rock medium Download PDFInfo
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- CN1837774A CN1837774A CN 200610018829 CN200610018829A CN1837774A CN 1837774 A CN1837774 A CN 1837774A CN 200610018829 CN200610018829 CN 200610018829 CN 200610018829 A CN200610018829 A CN 200610018829A CN 1837774 A CN1837774 A CN 1837774A
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Abstract
This invention relates to an apparatus for testing permeability coefficient of low-permeability rock medium, which comprises a sensor, a temperature control box and a flowmeter both connected to the triaxial chamber with a gas injection port and a gas outlet on ends, a rigid press axle pressure and rigid press confining pressure system. Wherein, arranging an axial/lateral pad in the said chamber, and setting a horizontal strain gage chain and clamp. This invention has simple structure for well versatility, high reliability, and wide application in energy storage and gassy mine.
Description
Technical field
The present invention relates to a kind of apparatus for testing permeability coefficient of low-permeability rock medium, this instrument is applicable to: the infiltration coefficient of the underground storage of oil, coal-bed gas perviousness and other low-permeability media is measured, and the infiltration coefficient of medium is 10
-22m
2About material can obtain by this pilot system.
Background technology
Along with rapid development of national economy, country just progressively implements oil, the rock gas strategy energy stores, and to improve the commercial deposit system of the national strategy energy reserves system and the energy, can make China tackle the international oil price fluctuation flexibly, initiatively grasps energy policy.Rock salt is acknowledged as the perfect medium of underground oil and gas storage owing to its good croop property and low-permeability, the western developed country such as the U.S., Germany, France etc. have all built up a large amount of rock salt underground gas storage (oil) storehouses, and have set up relevant technical indicator and standard.China's rock salt occurrence condition is comparatively special, and (the rock salt reservoir is thinner relatively, and be rich in the insolubility interlayer), implement the underground energy and store will face than western countries salt dome and store a more complicated technology difficult problem, the perviousness of stratiform rock salt bank is one of gordian technique of determining the bank pressure store.Rock salt is owing to have the characteristic of meeting water softening, and its perviousness can only be measured by the mode of gas penetration potential.
In addition, along with the increase of the resource exploitation degree of depth, terrestrial stress increases, geologic condition worsens, and coal and gas outstanding problem will become a key factor of restriction Safety of Coal Mine Production, and for gassy mine, the gas bearing capacity of ton coal is up to 20～24m
3, and the coal seam perviousness of gassy mine is often extremely low.Coal and rock is a porous medium, and the excavation activity changes the stress state of rock mass, thereby causes the mechanical property of rock mass and penetration property to change.The change of the flow state of the fluid in the rock mass in the space (hole, crack and hole) that is communicated with can cause the change of rock mass mechanics character again, and the distortion of rock mass is changed thereupon, and both influence each other, and interacts.For making rational use of resources, reduce and prevent the gas disaster (coal and gas are given prominence to, gas explosion), understand the perviousness of coal and rock and the interaction process and the rule of deformation fracture and gas permeation, to determining reasonable technological parameter, improve gas drainage efficiency, reduce engineering project disaster and have important practical significance.
Summary of the invention
The object of the present invention is to provide a kind of apparatus for testing permeability coefficient of low-permeability rock medium, this instrument versatility is good, simple in structure, reliability is high, realization is easy, avoids the skidding of gas end in the process of the test.For the test material of utmost point hyposmosis performance, not only can realize the end infiltration, can also permeate from the side, reach the speed of accelerating test, the precision that improves test can also reduce experimentation cost.
For achieving the above object, by the following technical solutions: in the middle of sample, open an aperture, by to the aperture gas injection, and at bottom, the top of sample with the good sealing performance cushion block is set all around, according to the test needs, can realize axially, the test method of side direction or bi-directional combination, distortion that simultaneously can also test sample realizes the real-time collection of experimental result by sensor.
This testing tool comprises: the axial pressure of rigid press, side direction pressurization, axial pad and lateral spacers, temperature control box, sensor, gas injection port and exhausr port, computing machine partly constitute.The annexation of this instrument is:
Rigid press axial compression 5, rigid press confined pressure system 10 link to each other with triaxial chamber, and its effect is to apply xial feed to sample;
Triaxial chamber one end has gas injection port 6, and its effect is the inert gas that applies certain pressure to sample; The triaxial chamber other end has exhausr port 11, and its effect is the pressure of exhausr port in the control process of the test;
In triaxial chamber 9 sample is housed, its effect provides the space that sample is installed, and guarantees applying of axial compression and confined pressure;
Transverse strain meter 13 closely links to each other with sample, and its effect is the transversely deforming of measuring sample;
The size that transverse strain meter clip 14 is used to regulate the transverse strain meter with contact;
Sample 15 links to each other with the transverse strain meter with triaxial chamber, is the measured main body of test;
Computing machine links to each other with sensor, and the data storage of being convenient to gather in real time is in computing machine;
The present invention includes: experimental principle, Data Acquisition and Conversion System (DACS) function.
The present invention compared with prior art has the following advantages and effect:
1. skid and non-uniform phenomenon in the experimentation end of avoiding in the past axially experiment to be produced.
2. experimental system both can realize axial exhaust, also can realize side direction exhaust or combined type exhaust.
3. can control the test temperature of sample in the process of the test.
4. can realize the testing permeability under the different stress conditions.
5. system's versatility is good, reliability is high, precision is high, and can shorten the test period.
Description of drawings
Fig. 1 is a kind of structural representation of tight rock medium osmosis parameter tester.
This tester comprises: flowmeter 1, and sensor 2, temperature control box 3, axial pad 4, rigid press axial compression 5, gas injection port 6, temperature control chamber 7, lateral spacers 8, triaxial chamber 9, rigid press confined pressure system 10, exhausr port 11 and cushion block 12 are formed.
Fig. 2 is a kind of structural representation of triaxial chamber.
This structure comprises: triaxial chamber 9, transverse strain meter 13, transverse strain meter clip 14 and cushion block 12.
Fig. 3 is a kind of cross section structure synoptic diagram of triaxial chamber.
This structure comprises: triaxial chamber barrel 16, transverse strain meter chain 17, transverse strain meter clip 14 and sample 15.
Embodiment
According to Fig. 1, Fig. 2 and Fig. 3, this tester partly is made up of special-purpose triaxial chamber, pad, sensor, flowmeter, rigid press axial compression and computing machine etc.
The basic connection relationship of this tester is:
End at triaxial chamber 9 has a gas injection port 6, and its effect is the inert gas that applies certain pressure to sample, uses nitrogen as test source of the gas, gaseous tension range of control≤20MPa;
Rigid press confined pressure system 10 joins with triaxial chamber 9, and its effect is to apply confined pressure to sample;
The other end at triaxial chamber 9 has exhausr port 11, and its effect is the pressure of exhausr port in the control process of the test;
Transverse strain meter 13 links to each other with sample 15, and its effect is the transversely deforming of measuring sample;
Transverse strain meter clip 14 is housed on the sample 15 of triaxial chamber 9, and the sample 15 in the triaxial chamber 9 links to each other with transverse strain meter 13.
Axial exhaust: the pressure of control test gas discharging.
Triaxial chamber, temperature control box and temperature control chamber, rigid press axial compression and rigid press confined pressure system, computing machine, flowmeter, sensor etc. can be from market purchasings.
According to shown in Figure 1, test sample 15 put into triaxial chamber 9, and put into axial pad 4 and lateral spacers 8; Use rigid press sample 15 is applied certain axial compression and confined pressure, inject gases at high pressure by gas injection system to gas injection port 6, and by controlling the pressure of exhausr port 11, relevant informations such as strain in application traffic meter 1 and the sensor 2 acquisition test processes and flow.
Above technical scheme has realized the mensuration of the infiltration coefficient of tight rock medium, and the measurement cost is low and test accuracy is high, has future in engineering applications widely.
Example 1: not perforate in the middle of the test
Gas injection pressure P=20MPa, when discharge pressure P=16MPa, flow=0.08ml/Min, coefficient of permeability K=10
-22m
2
Example 2: perforate in the middle of the test
Gas injection pressure P=20MPa, when discharge pressure P=16MPa, flow=0.47ml/Min, coefficient of permeability K=10
-22m
2
Claims (5)
1, a kind of apparatus for testing permeability coefficient of low-permeability rock medium, it is made of sensor (2), temperature control box (3), rigid press confined pressure system (10), it is characterized in that flowmeter (1) links to each other with triaxial chamber (9), temperature control box (3) links to each other with triaxial chamber (9), axial pad (4) and lateral spacers (8) are housed in triaxial chamber (9), transverse strain meter chain (17) is housed on triaxial chamber barrel (16).
2, a kind of apparatus for testing permeability coefficient of low-permeability rock medium according to claim 1 is characterized in that: at triaxial chamber (9) one ends gas injection port (6) is arranged, the other end is equipped with exhausr port (11).
3, a kind of apparatus for testing permeability coefficient of low-permeability rock medium according to claim 1 is characterized in that: on the sample (15) of triaxial chamber (9) transverse strain meter clip (14) is housed.
4, a kind of apparatus for testing permeability coefficient of low-permeability rock medium according to claim 1 is characterized in that: the sample (15) in the triaxial chamber (9) links to each other with transverse strain meter (13).
5, a kind of apparatus for testing permeability coefficient of low-permeability rock medium according to claim 1 is characterized in that: triaxial chamber (9) links to each other with rigid press axial compression (5) with temperature control chamber (7) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610018829XA CN1837774B (en) | 2006-04-20 | 2006-04-20 | Apparatus for testing permeability coefficient of low-permeability rock medium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610018829XA CN1837774B (en) | 2006-04-20 | 2006-04-20 | Apparatus for testing permeability coefficient of low-permeability rock medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1837774A true CN1837774A (en) | 2006-09-27 |
| CN1837774B CN1837774B (en) | 2010-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610018829XA Expired - Fee Related CN1837774B (en) | 2006-04-20 | 2006-04-20 | Apparatus for testing permeability coefficient of low-permeability rock medium |
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Cited By (16)
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|---|---|---|---|---|
| CN101825555A (en) * | 2010-03-25 | 2010-09-08 | 中国矿业大学 | Device for testing axial loading/unloading gas permeability of coal |
| CN101135622B (en) * | 2007-10-10 | 2010-10-06 | 中国科学院武汉岩土力学研究所 | Rock double linkage three axis rheogeniometer |
| CN101398355B (en) * | 2008-10-31 | 2011-01-26 | 清华大学 | Three-axis infiltration experiment device |
| CN102980837A (en) * | 2012-11-16 | 2013-03-20 | 中国石油天然气股份有限公司 | Device and measuring method for hydrocarbon diffusion coefficient in rocks under high temperature and high pressure |
| CN103245597A (en) * | 2013-05-29 | 2013-08-14 | 武汉大学 | Device and method for measuring instantaneous pneumatic pulse permeability of low-permeability rock |
| CN103335928A (en) * | 2013-05-30 | 2013-10-02 | 中国石油天然气集团公司 | Method and apparatus for measuring permeability of porous rock |
| CN103645129A (en) * | 2013-12-30 | 2014-03-19 | 中国科学院武汉岩土力学研究所 | High-temperature ultralow permeability measuring instrument |
| CN104931403A (en) * | 2015-06-11 | 2015-09-23 | 中国电建集团华东勘测设计研究院有限公司 | Anisotropic rock damage degree test device and test method thereof |
| CN105004650A (en) * | 2015-07-30 | 2015-10-28 | 中国石油大学(华东) | Gas permeation testing method in low-permeability rock time-dependent deformation under action of thermal-gas-mecha-nical coupling |
| CN105259091A (en) * | 2015-11-10 | 2016-01-20 | 河南理工大学 | Pressure-bearing broken residual coal permeability evolution and spontaneous combustion characteristic testing device |
| CN106769472A (en) * | 2017-01-11 | 2017-05-31 | 三峡大学 | Based on the vertical mechanical load Experiment on Function device of concrete and test method under axial dispersion and the effect of lateral confined pressure |
| CN106841000A (en) * | 2017-01-12 | 2017-06-13 | 四川大学 | The sample component and its test method of special hypotonic rock radial penetration rate testing experiment |
| CN109342291A (en) * | 2018-11-12 | 2019-02-15 | 东北大学 | Rock permeability measuring device and method under a kind of true triaxial stress unity couping |
| CN109459559A (en) * | 2018-12-25 | 2019-03-12 | 成渝铁路客运专线有限责任公司 | A kind of embedded device and test macro for deep layer rock soil water potential sensor |
| CN112630121A (en) * | 2020-11-30 | 2021-04-09 | 中国矿业大学 | Device and method for testing permeability of fractured surrounding rock of deep chamber under stress action |
| CN114563328A (en) * | 2022-04-02 | 2022-05-31 | 湖北昌耀新材料工程技术研究有限责任公司 | Testing device and method for permeability coefficient of shrinkable cementing material and testing method for permeation path of shrinkable cementing material |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5159828A (en) * | 1990-08-31 | 1992-11-03 | Exxon Production Research Company | Microaccumulator for measurement of fluid volume changes under pressure |
| CN1065936A (en) * | 1991-04-16 | 1992-11-04 | 四川石油管理局地质勘探开发研究院 | Core gas permeameter |
| CN2188205Y (en) * | 1993-10-22 | 1995-01-25 | 西南石油学院 | Rock physical property parameter testing device |
-
2006
- 2006-04-20 CN CN200610018829XA patent/CN1837774B/en not_active Expired - Fee Related
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| CN101135622B (en) * | 2007-10-10 | 2010-10-06 | 中国科学院武汉岩土力学研究所 | Rock double linkage three axis rheogeniometer |
| CN101398355B (en) * | 2008-10-31 | 2011-01-26 | 清华大学 | Three-axis infiltration experiment device |
| CN101825555A (en) * | 2010-03-25 | 2010-09-08 | 中国矿业大学 | Device for testing axial loading/unloading gas permeability of coal |
| CN102980837A (en) * | 2012-11-16 | 2013-03-20 | 中国石油天然气股份有限公司 | Device and measuring method for hydrocarbon diffusion coefficient in rocks under high temperature and high pressure |
| CN103245597B (en) * | 2013-05-29 | 2015-07-29 | 武汉大学 | Hypotonic rock transient state pneumatic pressure pulses permeability survey method |
| CN103245597A (en) * | 2013-05-29 | 2013-08-14 | 武汉大学 | Device and method for measuring instantaneous pneumatic pulse permeability of low-permeability rock |
| CN103335928A (en) * | 2013-05-30 | 2013-10-02 | 中国石油天然气集团公司 | Method and apparatus for measuring permeability of porous rock |
| CN103335928B (en) * | 2013-05-30 | 2015-03-04 | 中国石油天然气集团公司 | Method and apparatus for measuring permeability of porous rock |
| CN103645129A (en) * | 2013-12-30 | 2014-03-19 | 中国科学院武汉岩土力学研究所 | High-temperature ultralow permeability measuring instrument |
| CN104931403A (en) * | 2015-06-11 | 2015-09-23 | 中国电建集团华东勘测设计研究院有限公司 | Anisotropic rock damage degree test device and test method thereof |
| CN104931403B (en) * | 2015-06-11 | 2018-08-31 | 中国电建集团华东勘测设计研究院有限公司 | Anisotropic rock degree of injury test device and its test method |
| CN105004650A (en) * | 2015-07-30 | 2015-10-28 | 中国石油大学(华东) | Gas permeation testing method in low-permeability rock time-dependent deformation under action of thermal-gas-mecha-nical coupling |
| CN105259091A (en) * | 2015-11-10 | 2016-01-20 | 河南理工大学 | Pressure-bearing broken residual coal permeability evolution and spontaneous combustion characteristic testing device |
| CN105259091B (en) * | 2015-11-10 | 2018-05-15 | 河南理工大学 | Pressure-bearing, which crushes, loses coal permeability evolution and ignition quality test device |
| CN106769472A (en) * | 2017-01-11 | 2017-05-31 | 三峡大学 | Based on the vertical mechanical load Experiment on Function device of concrete and test method under axial dispersion and the effect of lateral confined pressure |
| CN106769472B (en) * | 2017-01-11 | 2019-09-24 | 三峡大学 | Based on the vertical mechanical load Experiment on Function device of concrete and test method under axial dispersion and the effect of lateral confining pressure |
| CN106841000A (en) * | 2017-01-12 | 2017-06-13 | 四川大学 | The sample component and its test method of special hypotonic rock radial penetration rate testing experiment |
| CN109342291A (en) * | 2018-11-12 | 2019-02-15 | 东北大学 | Rock permeability measuring device and method under a kind of true triaxial stress unity couping |
| CN109459559A (en) * | 2018-12-25 | 2019-03-12 | 成渝铁路客运专线有限责任公司 | A kind of embedded device and test macro for deep layer rock soil water potential sensor |
| CN109459559B (en) * | 2018-12-25 | 2024-03-29 | 成渝铁路客运专线有限责任公司 | Buried device for deep rock soil water potential sensor and test system |
| CN112630121A (en) * | 2020-11-30 | 2021-04-09 | 中国矿业大学 | Device and method for testing permeability of fractured surrounding rock of deep chamber under stress action |
| CN112630121B (en) * | 2020-11-30 | 2021-10-12 | 中国矿业大学 | Device and method for testing permeability of fractured surrounding rock of deep chamber under stress action |
| CN114563328A (en) * | 2022-04-02 | 2022-05-31 | 湖北昌耀新材料工程技术研究有限责任公司 | Testing device and method for permeability coefficient of shrinkable cementing material and testing method for permeation path of shrinkable cementing material |
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Application publication date: 20060927 Assignee: Hunchun Yao day new energy development and utilization of limited liability company Assignor: Wuhan Institute of rock and soil mechanics, Chinese Academy of Sciences Contract record no.: 2013220000015 Denomination of invention: Apparatus for testing permeability coefficient of low-permeability rock medium Granted publication date: 20100721 License type: Exclusive License Record date: 20130828 |
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