CN208537357U - A kind of coal body permeability test device - Google Patents
A kind of coal body permeability test device Download PDFInfo
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- CN208537357U CN208537357U CN201721123539.1U CN201721123539U CN208537357U CN 208537357 U CN208537357 U CN 208537357U CN 201721123539 U CN201721123539 U CN 201721123539U CN 208537357 U CN208537357 U CN 208537357U
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Abstract
The utility model discloses a kind of coal body permeability test devices, including bracket, clamper, confining pressure pump, axis press pump, gas cylinder and gas booster pump；Clamper is set in the bracket, clamper includes cylinder, and the top and bottom of cylinder are coated with rock core plug respectively, and rock core plug is equipped with venthole respectively in axial direction, the side wall of cylinder is equipped with the confining pressure interface being connected to the inner cavity of cylinder, and confining pressure interface is connected by pipeline and confining pressure pump；Bracket above clamper is equipped with axis and presses chamber, and axis presses the lower end of chamber to be equipped with telescopic rod, and the upper end of the rock core plug of the lower end and cylinder upper end of telescopic rod is connect, and axis pressure chamber is connect by axis pressure pipe road with axis press pump；Venthole in the rock core plug of cylinder upper end is connected by the outlet side of pipeline and gas booster pump, and the inlet end of gas booster pump is connect with gas cylinder.The utility model structure is simple, easy to operate, and test result is accurate, can not only test coal body permeability, while can also test the permeability and Ultrasonic characteristics of other rock samples.
Description
Technical field
The utility model belongs to coal body permeability the field of test technology more particularly to a kind of coal body permeability test device.
Background technique
Coal resources in China is quite abundant, and preservation has a large amount of gas (coal bed gas) in coal seam, is a kind of important energy, right
The exploitation of coal bed gas can provide powerful power supply for society.Coal body permeability is to measure the infiltrative parameter of coal body,
CBM exploration and development field, the size of coalbed methane reservoir permeability are the important ginsengs for influencing coal bed gas and whether having Development volue
Number, the anisotropy measurement of coal body permeability is the basis of cbm development, and the measurement of permeability is carried out in fact by laboratory
Testing analysis is most convenient most accurate method.
Gas is also a kind of pernicious gas in mine governance process, staff can be made to suffocate in mine, when watt
This concentration reaches certain limit, and there are also the danger exploded, and have both influenced the safety in production of national wealth and mine in this way, also prestige
The security of the lives and property of staff is coerced, and these gases are directly discharged into atmosphere and also will cause environmental pollution.If can handle
The direct extraction of coal bed gas and being used both reduces the generation of this kind of disaster or can achieve the purpose to turn waste into wealth, therefore coal
The exploitation of layer gas all has important meaning for environmental protection and economic development.
In the case where being adopted, original crustal stress can be destroyed coal body, and crustal stress suffered by coal seam can be dynamic with adopting
It influences and constantly changes.Meanwhile coal seam crustal stress dominates the variation of effective stress, direct or indirect controls infiltration
Rate.But the equipment of test permeability is the permeability tested under a certain state of coal sample in the past, can not reflect permeability
Truth.Therefore the above various reasons are based on, it is necessary to which the permeability anisotropy in different compressions carries out to coal body
Research.Different crustal stress are being simulated by different pressures situation by coal body, are being permeated to study coal body under different stress conditions
The changing rule of coal body permeability under the anisotropy and different pressures of rate analyzes the crack feelings of Coal Pore Structure and its inside
Condition turns waste into wealth to instruct the development and utilization of coal bed gas, but also mine can be made to keep the safety in production, and avoids disaster
Occur.
Existing coal body permeability survey method has period Loading Method, impulse method and steady state method, wherein with impulse method and surely
Based on state method, it is primarily present following problems:
Existing experimental facilities measures in the presence of very big difficulty the permeability in coal body destructive process and after destroying.Mostly
The poor sealing of coal sample clamper, all uses operator's hand-kept in many cases in number equipment, makes the permeability of measurement
There are large errors with true value.And existing equipment is single measurement coal body permeability, and it cannot be with ultrasonic parameters
Measurement carry out simultaneously.
Utility model content
The purpose of the utility model is to provide a kind of coal body permeability test device and its application methods, permeability survey
Device and ultrasonic measuring device are fused together, and can reach in a pressure process while measuring permeability and ultrasonic wave ginseng
Several purposes.Ess-strain of the sample in pressurized process can also be measured simultaneously.This method is easy directly, and test result is by counting
It is automatically recorded according to processing system, operates save trouble and labor.
In order to achieve the above objectives, the technical solution adopted in the utility model is:
A kind of coal body permeability test device, including bracket, clamper, confining pressure pump, axis press pump, gas cylinder and gas boosting
Pump；Clamper is set in the bracket, and clamper includes the cylinder of upper and lower opening, and the top and bottom of cylinder are slided be coated with rock respectively
Heart plug, rock core plug are equipped with venthole respectively in axial direction, and the side wall of cylinder is equipped with the confining pressure interface being connected to the inner cavity of cylinder, confining pressure
Interface is connected by pipeline and confining pressure pump；Bracket above clamper is equipped with axis and presses chamber, and axis presses the lower end of chamber to be equipped with telescopic rod,
The lower end of telescopic rod is connect with the upper end of the rock core plug of cylinder upper end, and axis pressure chamber is connect by axis pressure pipe road with axis press pump；Cylinder
Venthole in the rock core plug of upper end is connected by the outlet side of pipeline and gas booster pump, the inlet end and gas of gas booster pump
Bottle connection.
Preferably, the top and bottom of cylinder are respectively equipped with pressure-pad, and what rock core plug slided respectively is installed on corresponding pressure-pad
In, it is equipped with rubber sleeve in the inner cavity of cylinder, is set with coal sample in rubber sleeve, the top and bottom of rubber sleeve are installed with envelope respectively
Head, what the rock core plug in the inner cavity of cylinder slided is installed in corresponding end socket.
Preferably, the outer wall of end socket is set with and the matched square seal ring of the inner wall of corresponding cylinder and circular seal
Circle.
Preferably, the top and bottom of rubber sleeve are respectively equipped with conical internal cavity, and end socket is equipped with and the matched cone of conical internal cavity
Shape face.
Preferably, rock core plug is respectively equipped with porous plate with the end face of corresponding coal sample.
Preferably, rock core plug is built-in with ultrasonic transducer, and ultrasonic transducer is occurred by route and ultrasonic pulse
Device connection, ultrasonic pulse generator are connect by route with digital oscilloscope.
Preferably, the venthole in the rock core plug of cylinder lower end is connect by pipeline with gas collector, on pipeline also
Equipped with vacuum pump, outlet pressure sensor, flowmeter and valve.
Preferably, the pipeline between gas booster pump and clamper is equipped with inlet pressure sensor.
Preferably, be additionally provided with data collection system, digital oscilloscope, inlet pressure sensor, outlet pressure sensor and
Flowmeter is connect with data collection system respectively.
A kind of application method based on coal body permeability test device, comprising the following steps:
(1) sample preparation: according to the object to be studied, corresponding sample is taken, then drills through circle according to different directions
Cylindrical coal sample, make its upper and lower two end face with it is axially vertical, and guarantee its smooth surface, and use vernier caliper measurement
The length and its diameter of coal sample；
(2) valve of gas circuit is closed；
(3) coal sample prepared is taken, clamper is put it into, then loads onto rock core plug；Clamper is mounted on branch
On frame, make its stabilization；
(4) by the piping connection to confining pressure interface of confining pressure pump, starting confining pressure pump, setting confining pressure parameter is pressurizeed；
(5) start axis press pump, setting axis presses parameter to pressurize；
(6) starting vacuum pump vacuumizes, and makes system pressure lower than 40pa, is then shut off vacuum pump；
(7) valve for opening gas cylinder, is passed through gas to coal sample, to its adsorption equilibrium；
(8) after adsorption equilibrium, open data processing system, carry out the setting of parameter, including coal sample length, coal sample diameter,
Test gas viscosity, atmospheric pressure；
(9) it after setting parameter in a data processing system, opens valve and starts to test；
(10) after testing, valve is closed；Then it is once again set up axis pressure pressure value, next time is carried out after its adsorption equilibrium
Test；
All parameters in test process, including coal sample length, coal sample diameter, gas viscosity, atmospheric pressure, inlet pressure
The numerical value of sensor, the numerical value of outlet pressure sensor, the numerical value of flowmeter and the permeability result that is calculated from the formula
It can be automatically saved in Excel file；
According to Darcy formula, the formula of gas permeability are as follows:
In formula, K-gas permeability；A-coal sample sectional area, according to coal sample diameter calculation；L-coal sample length；P1、P2—
Coal sample entrance and outlet pressure；P0- atmospheric pressure；μ-gas viscosity；Q0- flowmeter flow；
When measuring permeability, after the axis pressure and confining pressure of sample apply 20 minutes, can be measured to coal body internal stability
The longitudinal and transverse velocity of wave of coal sample；
Velocity of wave calculation formula is as follows:
The P-wave And S velocity of wave calculation formula of ultrasonic wave:
Longitudinal wave: VP=L/tP-tD
Shear wave: VS=L/tS-tD
In formula: VP- longitudinal wave velocity；VS- transverse wave speed；L-coal sample length；tPThe time that-longitudinal wave is walked in the sample；
tSThe time that-shear wave is walked in the sample；tOThe zero propagation of-instrument system.
Preferably, when measuring permeability, after the axis of sample pressure and confining pressure apply 20 minutes, to coal body internal stability,
The longitudinal and transverse velocity of wave of coal sample is measured, measuring process is as follows:
(1) ultrasonic pulse generator and digital oscilloscope are opened；
It (2) will be on the longitudinal wave measurement connection to the interface of ultrasonic pulse generator of clamper top rock core plug；
It (3) will be on the longitudinal wave measurement connection to the interface of digital oscilloscope of clamper lower part rock core plug；
(4) control handle on digital oscilloscope is adjusted, until there is ideal waveform diagram on digital oscilloscope；
(5) operating data processing system records P wave data；
(6) the amount route of the longitudinal wave of clamper top rock core plug is removed, shear wave is then measured into connection to ultrasonic wave
On the interface of impulse generator；
(7) the amount route of the longitudinal wave of clamper lower part rock core plug is removed, then shows shear wave measurement connection to number
On the interface of wave device；
(8) operating data processing system records shear wave data.
The utility model has the advantage, that
1. the coal body permeability test device structure of the utility model is simple, easy to operate, test result is accurate, not only may be used
To test coal body permeability, while the permeability and Ultrasonic characteristics of other rock samples can also be tested, there is portability,
The features such as versatility is stronger.
2. the ultrasonic pulse generator in the coal body permeability test device of the utility model can excite certain frequency
Ultrasonic wave can acquire the acoustic signals by coal body after digital oscilloscope adjusts waveform, pass through the change of ultrasonic velocity
Change the variation and distribution that can reflect coal body internal holes crack, permeability and ultrasonic wave are measured in same process, make to test
As a result more accurate and reliable.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the vertical section schematic diagram of clamper in Fig. 1；
Fig. 3 is the top view of porous plate in Fig. 2；
Fig. 4 is the curve graph drawn using P wave data；
In figure: 1 is axis press pump, and 2 be gas cylinder, and 3 be gas booster pump, and 4 be inlet pressure sensor, and 5 be clamper, and 6 are
Coal sample, 7 be outlet pressure sensor, and 8 be flowmeter, and 9 be valve, and 10 be data collection system, and 11 pump for confining pressure, and 12 be vacuum
Pump, 13 be axis pressure pipe road, and 14 be bracket, and 15 be gas collector, and 16 be ultrasonic pulse generator, and 17 be digital oscillography
Device；51 be rock core plug, and 52 be end socket, and 53 be pressure-pad, and 54 be cylinder, and 55 be confining pressure interface, and 56 be rubber sleeve, and 57 be quad seal
Circle, 58 be circular seal ring, and 59 be porous plate, and 510 be ultrasonic transducer.
Specific embodiment
A kind of coal body permeability test device, as shown in Figure 1-3, include axis press pump 1, gas cylinder 2, gas booster pump 3, clamping
Device 5, confining pressure pump 11 and bracket 14.Clamper 5 is located in bracket 14, and clamper 5 includes the cylinder 54 of upper and lower opening, cylinder 54
Top and bottom are slided respectively is coated with rock core plug 51, and rock core plug 51 is equipped with venthole respectively in axial direction, and the side wall of cylinder 54 is set
There is the confining pressure interface 55 being connected to the inner cavity of cylinder 54, confining pressure interface 55 is connect by pipeline with confining pressure pump 11.
The bracket 14 of the top of clamper 5 is equipped with axis and presses chamber, and axis presses the lower end of chamber to be equipped with telescopic rod, the lower end of telescopic rod with
The upper end of the rock core plug 51 of 54 upper end of cylinder connects, and axis pressure chamber is connect by axis pressure pipe road 13 with axis press pump 1；54 upper end of cylinder
Venthole in rock core plug 51 is connect by pipeline with the outlet side of gas booster pump 3, the inlet end and gas cylinder of gas booster pump 3
2 connections.
The top and bottom of cylinder 54 are respectively equipped with pressure-pad 53, and pressure-pad 53 is threadedly coupled with cylinder 54, connection structure
Securely.
What rock core plug 51 slided respectively is installed in corresponding pressure-pad 53, and rubber sleeve 56, rubber are equipped in the inner cavity of cylinder 54
Coal sample 6 is set in gum cover 56, the top and bottom of rubber sleeve 56 are installed with end socket 52 respectively, in the inner cavity of cylinder 54
What rock core plug 51 slided is installed in corresponding end socket 52.Rock core plug 51, end socket 52, pressure-pad 53, cylinder 54 are made of steel.
The outer wall of end socket 52 is set with and the matched square seal ring 57 of the inner wall of corresponding cylinder 54 and circular seal ring
58。
The top and bottom of rubber sleeve 56 are respectively equipped with conical internal cavity, and end socket 52 is equipped with and the matched taper of conical internal cavity
Face.Due to the presence of pyramidal structure, wedge is bonded closer in the bigger clamper 5 of pressure, can reach good sealing
Effect can guarantee the airtightness of experimental system in this way.
Rock core plug 51 is respectively equipped with porous plate 59 with the end face of corresponding coal sample 6.Rock core plug 51 is built-in with ultrasonic wave transducer
Device 510, ultrasonic transducer 510 are connect by route with ultrasonic pulse generator 16, and ultrasonic pulse generator 16 passes through
Route is connect with digital oscilloscope 17.Ultrasonic pulse generator 16 uses Olympus (OLYMPUS) 5077PR pulse generation
Device, the tester are equipped with longitudinal wave (P wave), shear wave (S wave) activating system.Digital oscilloscope 17 uses Tyke TDS2014C series number
Signal-under-test is sampled and is quantified first by word oscillograph, digital oscilloscope, is saved in memory, is passed through with binary signal
Specific algorithm in a continuous fashion on the screen displays the discrete value of measured signal, which has capture transient wave
The functional characteristics such as shape, stored waveform.
Ultrasonic transducer 510 is located in rock core plug 51, can both transmit signal, can also bear pressure, rock core plug 51
Preferable protective effect is played to ultrasonic transducer 510.
Venthole in the rock core plug 51 of 54 lower end of cylinder is connect by pipeline with gas collector 15, is also set on pipeline
There are vacuum pump 12, outlet pressure sensor 7, flowmeter 8 and valve 9.It is set on pipeline between gas booster pump 3 and clamper 5
There is inlet pressure sensor 4.Gas collector 15 passes through the gas being discharged in drainage collecting, in case gas escapes,
Cause security risk.
It is additionally provided with data collection system 10, digital oscilloscope 17, inlet pressure sensor 4, outlet pressure sensor 7 and stream
Meter 8 is connect with data collection system 10 respectively, and data collection system 10 is gone forward side by side line number for the parameters in acquisition device
According to processing.
The utility model can carry out the permeability of coal body at various pressures in the case where converting confining pressure and axis pressure
Real-time measurement.Ultrasonic pulse generator can excite the ultrasonic wave of certain frequency, adjust waveform in digital oscilloscope, after can
Acquisition can reflect the variation in coal body internal holes crack by the variation of ultrasonic velocity and divided by the acoustic signals of coal body
Cloth.Two pressure sensors and high precision flow are connected with data collection system, and when carrying out data acquisition, data are adopted
Collecting system can voluntarily acquire data and can calculate corresponding permeability automatically while data acquire and save, therefore operate
Cheng Feichang is easy, and permeability and ultrasonic wave are measured in same process, keep test result more accurate and reliable.
A kind of application method based on coal body permeability test device, comprising the following steps:
(1) sample preparation: according to the object to be studied, corresponding sample is taken, then drills through circle according to different directions
Cylindrical coal sample 6, make its upper and lower two end face with it is axially vertical, and guarantee its smooth surface, and use vernier caliper measurement
The length and its diameter of coal sample 6；6 specification of coal sample is Φ 25mm × 50mm -60mm or Φ 50mm × 50mm -100mm；
(2) valve 9 of gas circuit is closed；
(3) coal sample prepared 6 is taken, clamper 5 is put it into, then loads onto rock core plug 51；Clamper 5 is installed
On the support 14, make its stabilization；
(4) by the piping connection to confining pressure interface 55 of confining pressure pump 11, starting confining pressure pump 11, setting confining pressure parameter is added
Pressure；
(5) start axis press pump 1, setting axis presses parameter to pressurize；
(6) starting vacuum pump 12 vacuumizes, and makes system pressure lower than 40pa, is then shut off vacuum pump 12；
(7) valve for opening gas cylinder 2, is passed through gas to coal sample 6, to its adsorption equilibrium；
(8) after adsorption equilibrium, data processing system is opened, carries out the setting of parameter, including 6 length of coal sample, coal sample 6 are directly
Diameter, test gas viscosity, atmospheric pressure；
(9) it after setting parameter in a data processing system, opens valve 9 and starts to test；
(10) after testing, valve 9 is closed；Then it is once again set up axis pressure pressure value, is carried out down after its adsorption equilibrium
Secondary test；
All parameters in test process, including coal sample length, coal sample diameter, gas viscosity, atmospheric pressure, inlet pressure
The numerical value of sensor, the numerical value of outlet pressure sensor, the numerical value of flowmeter and the permeability result that is calculated from the formula
It can be automatically saved in Excel file；
According to Darcy formula, the formula of gas permeability are as follows:
In formula, K-gas permeability；A-coal sample sectional area, according to coal sample diameter calculation；L-coal sample length；P1、P2—
Coal sample entrance and outlet pressure；P0- atmospheric pressure；μ-gas viscosity；Q08 flow of-flowmeter；
When measuring permeability, after the axis pressure and confining pressure of sample apply 20 minutes, can be measured to coal body internal stability
The longitudinal and transverse velocity of wave of coal sample 6.Measuring process is as follows:
(1) ultrasonic pulse generator 16 and digital oscilloscope 17 are opened.
(2) by the interface of the longitudinal wave measurement connection of 5 top rock core plug 51 of clamper to ultrasonic pulse generator 16
On.
It (3) will be on the longitudinal wave measurement connection to the interface of digital oscilloscope 17 of 5 lower part rock core plug 51 of clamper.
(4) control handle on digital oscilloscope 17 is adjusted, until there is ideal waveform diagram on digital oscilloscope 17.
(5) operating data processing system records P wave data.
(6) the amount route of the longitudinal wave of 5 top rock core plug 51 of clamper is removed, shear wave is then measured into connection to ultrasound
On the interface of pulse generator 16.
(7) the amount route of the longitudinal wave of 5 lower part rock core plug 51 of clamper is removed, shear wave is then measured into connection to number
On the interface of oscillograph 17.
(8) operating data processing system records shear wave data.
Velocity of wave calculation formula is as follows:
The P-wave And S velocity of wave calculation formula of ultrasonic wave: longitudinal wave: VP=L/tP-tD
Shear wave: VS=L/tS-tD
In formula: VP- longitudinal wave velocity；VS- transverse wave speed；L-coal sample length；tPThe time that-longitudinal wave is walked in the sample；
tSThe time that-shear wave is walked in the sample；tOThe zero propagation of-instrument system.
As shown in Figure 4, continue with the load time, longitudinal wave velocity is continuously increased, before 1.5MPa velocity of wave increase compared with
Fastly, illustrate inside coal body, most of crack hole is closed, and permeability will reduce；Velocity of wave increases slowly, in pressure later
Velocity of wave reaches maximum value when reaching 3.6MPa or so, hereafter as the increase velocity of wave of stress becomes smaller, illustrates that coal body is acted in pressure
The lower extension that crack occurs simultaneously produces new hole crack, and coal body permeability will increase later.
Embodiment described above is only that preferred embodiments of the present invention are described, and is not departing from this reality
Under the premise of new design spirit, various modifications that those of ordinary skill in the art make the technical solution of the utility model
And improvement, it should all fall into the protection scope that the utility model claims book determines.
Claims (8)
1. a kind of coal body permeability test device, it is characterised in that: including bracket, clamper, confining pressure pump, axis press pump, gas cylinder and
Gas booster pump；Clamper is set in the bracket, and clamper includes the cylinder of upper and lower opening, and the top and bottom of cylinder are slided respectively
It is coated with rock core plug, rock core plug is equipped with venthole respectively in axial direction, and the side wall of cylinder is equipped with the confining pressure being connected to the inner cavity of cylinder
Interface, confining pressure interface are connected by pipeline and confining pressure pump；Bracket above clamper is equipped with axis and presses chamber, and the lower end of axis pressure chamber is set
There is telescopic rod, the upper end of the rock core plug of the lower end and cylinder upper end of telescopic rod is connect, and axis presses chamber to pass through axis pressure pipe road and axis press pump
Connection；Venthole in the rock core plug of cylinder upper end is connected by the outlet side of pipeline and gas booster pump, gas booster pump
Inlet end is connect with gas cylinder.
2. coal body permeability test device as described in claim 1, it is characterised in that: the top and bottom of cylinder are respectively equipped with
Pressure-pad, what rock core plug slided respectively is installed in corresponding pressure-pad, and rubber sleeve is equipped in the inner cavity of cylinder, is set in rubber sleeve
The top and bottom of coal sample, rubber sleeve are installed with end socket respectively, and the sliding of rock core plug in the inner cavity of cylinder is installed on pair
In the end socket answered；The outer wall of end socket is set with and the matched square seal ring of the inner wall of corresponding cylinder and circular seal ring.
3. coal body permeability test device as claimed in claim 2, it is characterised in that: the top and bottom of rubber sleeve are set respectively
There is conical internal cavity, end socket is equipped with and the matched tapered surface of conical internal cavity.
4. coal body permeability test device as claimed in claim 3, it is characterised in that: the end face of rock core plug and corresponding coal sample
It is respectively equipped with porous plate.
5. coal body permeability test device as claimed in claim 4, it is characterised in that: rock core plug is built-in with ultrasonic wave transducer
Device, ultrasonic transducer are connect by route with ultrasonic pulse generator, and ultrasonic pulse generator passes through route and number
Oscillograph connection.
6. coal body permeability test device as claimed in claim 5, it is characterised in that: the ventilation in the rock core plug of cylinder lower end
Hole is connect by pipeline with gas collector, and vacuum pump, outlet pressure sensor, flowmeter and valve are additionally provided on pipeline.
7. coal body permeability test device as claimed in claim 6, it is characterised in that: between gas booster pump and clamper
Pipeline is equipped with inlet pressure sensor.
8. coal body permeability test device as claimed in claim 7, it is characterised in that: be additionally provided with data collection system, number
Oscillograph, inlet pressure sensor, outlet pressure sensor and flowmeter are connect with data collection system respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721123539.1U CN208537357U (en) | 2017-09-04 | 2017-09-04 | A kind of coal body permeability test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721123539.1U CN208537357U (en) | 2017-09-04 | 2017-09-04 | A kind of coal body permeability test device |
Publications (1)
| Publication Number | Publication Date |
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| CN208537357U true CN208537357U (en) | 2019-02-22 |
Family
ID=65399865
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| CN201721123539.1U Expired - Fee Related CN208537357U (en) | 2017-09-04 | 2017-09-04 | A kind of coal body permeability test device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110346449A (en) * | 2019-05-24 | 2019-10-18 | 南通市中京机械有限公司 | Sound wave clamper |
| CN111879674A (en) * | 2020-07-15 | 2020-11-03 | 西南石油大学 | Testing device and method for determining reasonable well closing time based on shale imbibition permeability |
| CN112284997A (en) * | 2020-10-19 | 2021-01-29 | 河南理工大学 | Coal gas permeation experiment and fracture monitoring device and method |
| CN113358480A (en) * | 2021-05-13 | 2021-09-07 | 太原理工大学 | Coal rock mechanical test device and test method |
| CN114542019A (en) * | 2022-04-07 | 2022-05-27 | 中国地质大学（北京） | Unconventional reservoir fluid adsorption migration displacement simulation measuring device |
-
2017
- 2017-09-04 CN CN201721123539.1U patent/CN208537357U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110346449A (en) * | 2019-05-24 | 2019-10-18 | 南通市中京机械有限公司 | Sound wave clamper |
| CN111879674A (en) * | 2020-07-15 | 2020-11-03 | 西南石油大学 | Testing device and method for determining reasonable well closing time based on shale imbibition permeability |
| CN111879674B (en) * | 2020-07-15 | 2022-02-01 | 西南石油大学 | Testing device and method for determining reasonable well closing time based on shale imbibition permeability |
| CN112284997A (en) * | 2020-10-19 | 2021-01-29 | 河南理工大学 | Coal gas permeation experiment and fracture monitoring device and method |
| CN112284997B (en) * | 2020-10-19 | 2023-05-19 | 河南理工大学 | Coal gas permeation experiment and crack monitoring device and method |
| CN113358480A (en) * | 2021-05-13 | 2021-09-07 | 太原理工大学 | Coal rock mechanical test device and test method |
| CN113358480B (en) * | 2021-05-13 | 2022-08-05 | 太原理工大学 | Coal rock mechanical test device and test method |
| CN114542019A (en) * | 2022-04-07 | 2022-05-27 | 中国地质大学（北京） | Unconventional reservoir fluid adsorption migration displacement simulation measuring device |
| CN114542019B (en) * | 2022-04-07 | 2022-11-25 | 中国地质大学（北京） | Unconventional reservoir fluid adsorption migration displacement simulation measuring device |
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