CN2903969Y - Tester for penetration coefficient of low-penetration rock medium - Google Patents
Tester for penetration coefficient of low-penetration rock medium Download PDFInfo
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- CN2903969Y CN2903969Y CN 200620096269 CN200620096269U CN2903969Y CN 2903969 Y CN2903969 Y CN 2903969Y CN 200620096269 CN200620096269 CN 200620096269 CN 200620096269 U CN200620096269 U CN 200620096269U CN 2903969 Y CN2903969 Y CN 2903969Y
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- triaxial chamber
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Abstract
The utility model discloses a permeability coefficient testing device for a low permeability rock medium, which comprises a sensor, a temperature control box, a press rigid axial compression, an rigid press confining pressure system, wherein, the flow meter is communicated with a tri-axial chamber, the temperature control box is communicated with the tri-axial chamber which is equipped with an axial and a lateral pads, the drum wall of the chamber is equipped with a tri-axial transverse strain gauge chain and a three-axis transverse strain gauge clip; one end of the tri-axial chamber has a gas injection port, and the other end is equipped with an exhaust outlet. The utility model has the advantages of good system versatility, simple structure, high reliability, which can be used in energy storage and tests of gassy mine coal bed permeability.
Description
Technical field
The utility model relates to a kind of tight rock medium osmosis coefficient testing device, and this device 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 purpose of this utility model is to provide a kind of tight rock medium osmosis coefficient testing device, and this device 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 proving installation 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:
Flowmeter 1 links to each other with triaxial chamber 9, and its effect is the flow of measuring by sample;
Sensor 2 links to each other with triaxial chamber 9, and its effect is a stress of measuring sample;
Temperature control box 3 links to each other with triaxial chamber 9, the temperature of sample when its effect is control testing laboratory;
Axial pad 4 and lateral spacers 8 are housed in triaxial chamber 9, and its effect is a seal sample, guarantees that sample permeates from side direction;
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;
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 utility model comprises: experimental principle, Data Acquisition and Conversion System (DACS) function.
The utility model 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 test device.
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 device 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 device is:
Flowmeter 1 links to each other with triaxial chamber 9, adopts mass-flow gas meter to measure, and the precision of measurement is 0.02～10ml/min;
Sensor 2 links to each other with triaxial chamber 9, in real time stress, displacement, flow and the gas injection port 6 in the acquisition test process and the pressure and the flow of exhausr port 11;
Temperature control box 3 links to each other with triaxial chamber 9, the test temperature of sample can be controlled at 10 ℃～100 ℃;
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;
Temperature control chamber 7 is shells of temperature control box, and its effect is to guarantee that sample evenly heats;
Lateral spacers 8 is housed in triaxial chamber 9, and its effect is to guarantee that gas permeates from side direction, and lateral spacers 8 is according to the size processing of sample;
Axial cushion block 4 and lateral spacers 8 are housed in triaxial chamber 9, sample 15 is put into build-in test, the space that provides sample to install, and guarantee applying of axial compression and confined pressure, the cylinder that 9 pairs of samples of triaxial chamber pressurize;
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 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 tight rock medium osmosis coefficient testing device, 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 tight rock medium osmosis coefficient testing device according to claim 1, it 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 tight rock medium osmosis coefficient testing device 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 tight rock medium osmosis coefficient testing device 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 tight rock medium osmosis coefficient testing device 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 |
|---|---|---|---|
| CN 200620096269 CN2903969Y (en) | 2006-04-20 | 2006-04-20 | Tester for penetration coefficient of low-penetration rock medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620096269 CN2903969Y (en) | 2006-04-20 | 2006-04-20 | Tester for penetration coefficient of low-penetration rock medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2903969Y true CN2903969Y (en) | 2007-05-23 |
Family
ID=38079383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620096269 Expired - Fee Related CN2903969Y (en) | 2006-04-20 | 2006-04-20 | Tester for penetration coefficient of low-penetration rock medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2903969Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101226131B (en) * | 2008-01-25 | 2011-10-05 | 成都理工大学 | Method for sealing sample with high hydraulic pressure |
| CN102297831A (en) * | 2011-05-23 | 2011-12-28 | 山东科技大学 | Test device and method for rapid gas logging of permeability of coal seam |
| CN102798705A (en) * | 2012-08-03 | 2012-11-28 | 河海大学 | Method for determination of anisotropic medium permeability parameters based on single-hole flow wave equation |
| CN103645298A (en) * | 2013-12-18 | 2014-03-19 | 重庆大学 | Testing method for determining self-recovering amount of damaged rock salt |
| CN103994956A (en) * | 2013-02-20 | 2014-08-20 | 核工业北京地质研究院 | Test device for determining permeability of large-scale single fracture medium under triaxial stress |
| CN104897554A (en) * | 2015-07-02 | 2015-09-09 | 中国石油大学(华东) | Low permeability rock gas permeation test device and method under air and heat coupling effect |
-
2006
- 2006-04-20 CN CN 200620096269 patent/CN2903969Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101226131B (en) * | 2008-01-25 | 2011-10-05 | 成都理工大学 | Method for sealing sample with high hydraulic pressure |
| CN102297831A (en) * | 2011-05-23 | 2011-12-28 | 山东科技大学 | Test device and method for rapid gas logging of permeability of coal seam |
| CN102798705A (en) * | 2012-08-03 | 2012-11-28 | 河海大学 | Method for determination of anisotropic medium permeability parameters based on single-hole flow wave equation |
| CN102798705B (en) * | 2012-08-03 | 2015-04-29 | 河海大学 | Method for determination of anisotropic medium permeability parameters based on single-hole flow wave equation |
| CN103994956A (en) * | 2013-02-20 | 2014-08-20 | 核工业北京地质研究院 | Test device for determining permeability of large-scale single fracture medium under triaxial stress |
| CN103645298A (en) * | 2013-12-18 | 2014-03-19 | 重庆大学 | Testing method for determining self-recovering amount of damaged rock salt |
| CN103645298B (en) * | 2013-12-18 | 2015-10-07 | 重庆大学 | A kind of test method measuring Characteristics of Damaged Rock Salt self-recoverage amount |
| CN104897554A (en) * | 2015-07-02 | 2015-09-09 | 中国石油大学(华东) | Low permeability rock gas permeation test device and method under air and heat coupling effect |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070523 Termination date: 20110420 |