CN207007656U - A kind of coal-bed methane seepage slip casting analogue experiment installation - Google Patents
A kind of coal-bed methane seepage slip casting analogue experiment installation Download PDFInfo
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- CN207007656U CN207007656U CN201720318887.8U CN201720318887U CN207007656U CN 207007656 U CN207007656 U CN 207007656U CN 201720318887 U CN201720318887 U CN 201720318887U CN 207007656 U CN207007656 U CN 207007656U
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- coal
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Abstract
The utility model provides a kind of coal-bed methane seepage slip casting analogue experiment installation, the coal-bed methane seepage slip casting analogue experiment installation includes nitrogen cylinder, gas connection pipe, check valve, threeway, analogue means, fluid connection tube, slush pump and slurry-storing container, the gas connection pipe connection nitrogen cylinder and check valve, the threeway connection analogue means and check valve, the nitrogen cylinder inputs nitrogen by gas connection pipe to analogue means, storage has drilling fluid in the slurry-storing container, drilling fluid is transported in analogue means by the slush pump by fluid connection tube, nitrogen cooperates with drill-in fluid in analogue means, so as to simulate drilling pressure.A kind of coal-bed methane seepage slip casting analogue experiment installation provided by the utility model, it is easy to use, experiment dynamic can be intuitively observed in real time.
Description
Technical field
It the utility model is related to simulated experiment articles for use field, more particularly to a kind of coal-bed methane seepage slip casting simulated experiment dress
Put.
Background technology
Coal bed gas has huge exploitation potential, many problems be present during its mining, arrange as a kind of clean energy resource
During adopting, the percolation law of liquid is to influence the key issue of normal mining, and is understood under different coal atmospheric pressure in coal
In percolation law be the important ring for solving the problems, such as coal mining.
Utility model content
In view of this, embodiment of the present utility model provides a kind of down-hole coal bed gas extraction blast drilling pressure of simulation
Coal-bed methane seepage slip casting analogue experiment installation.
Embodiment of the present utility model provides a kind of coal-bed methane seepage slip casting analogue experiment installation, the coal-bed methane seepage note
Starch analogue experiment installation include nitrogen cylinder, gas connection pipe, check valve, threeway, analogue means, fluid connection tube, slush pump and
Slurry-storing container, the gas connection pipe connection nitrogen cylinder and check valve, the threeway connection analogue means and check valve, the nitrogen
Gas cylinder inputs nitrogen to analogue means by gas connection pipe and threeway, and being deposited in the slurry-storing container has drilling fluid, the mud
Stock pump is transported in analogue means by fluid connection tube drilling fluid, and nitrogen cooperates with drill-in fluid in analogue means, from
And simulate drilling pressure.
Further, the gas connection pipe is provided with gas control valve and pressure gauge, and the pressure gauge shows nitrogen cylinder
The nitrogen pressure force value of output, the nitrogen pressure force value of the gas control valve regulation nitrogen cylinder output.
Further, the analogue experiment installation also includes sealed interface and gas-liquid Two purpose valve, the gas connection pipe
Including first gas connecting tube and second gas connecting tube, the threeway includes the first threeway and the second threeway, the check valve
Including the first check valve and the second check valve, the first threeway side is connected by the first check valve and first gas connecting tube
Connecing, the first threeway upper end connects gas liquid two purpose valve, and the first threeway lower end is connected with analogue means upper end, and described the
Two threeway sides are connected by the second check valve with second gas connecting tube, and the second threeway upper end connects with analogue means lower end
Connect, the second threeway lower end is sealed by sealed interface.
Further, the fluid connection tube includes the first fluid connection tube and second liquid connecting tube, first liquid
Body connecting tube connects slush pump and gas-liquid Two purpose valve, the second liquid connecting tube connection slush pump and slurry-storing container.
Further, the analogue means includes the first liquid storage unit, the second liquid storage unit, position-limiting unit and coal sample Guan Dan
Member, the coal sample pipe unit upper and lower ends are networks, and the coal sample pipe unit is fixed on analogue means by position-limiting unit
Interior, being deposited in the coal sample pipe unit has coal sample, and first liquid storage unit is located above coal sample pipe unit, second liquid storage
Unit is located at below coal sample pipe unit, after drilling fluid enters the analogue means, the first liquid storage unit is first stored in, then in gas
Under pressure and Action of Gravity Field, enter the second liquid storage unit through the coal sample in coal sample pipe unit.
Further, the nitrogen cylinder inputs nitrogen by first gas connecting tube to the first liquid storage unit, and nitrogen is to the
Coal sample in drilling fluid and coal sample pipe unit in one liquid storage unit produces a downward pressure, to simulate downhole drill pneumatics
Wind pressure, the nitrogen cylinder inputs nitrogen by second gas connecting tube to the second liquid storage unit, in second liquid storage unit
Nitrogen in coal sample pipe unit coal sample apply a upward power, to simulate primitive coalbed atmospheric pressure, the first gas
The nitrogen pressure force value exported in connecting tube is more than the nitrogen pressure force value exported in the second gas connecting tube.
Further, the coal-bed methane seepage slip casting analogue experiment installation also includes soil pressure cell, deformeter and signal biography
Defeated line, the soil pressure cell are fixed in coal sample pipe unit by coal sample, the signal transmssion line connection soil pressure cell and strain
Instrument, soil pressure cell collection strain size, the signal transmssion line transmit strain data signal, and the deformeter is by dependent variable
According to switching to pressure data and show pressure data.
Further, the soil pressure cell has multiple.
Coal-bed methane seepage slip casting analogue experiment installation of the present utility model is connected by first gas connecting tube and second gas
Two passages of adapter inject nitrogen to coal sample pipe, and inject drilling fluid by fluid connection tube, and nitrogen pressure and drilling fluid combine,
The optimum pressure easy to find for meeting slip casting depth requirements under different coal gas reset pressure.Meanwhile the soil pressure in coal sample pipe
Strain data is changed and is shown as pressure value by power box, real-time perception coal sample strain size, the deformeter.
Brief description of the drawings
Fig. 1 is an a kind of schematic diagram of coal-bed methane seepage slip casting analogue experiment installation of the utility model.
Embodiment
It is new to this practicality below in conjunction with accompanying drawing to make the purpose of this utility model, technical scheme and advantage clearer
Type embodiment is further described.
Fig. 1 is refer to, embodiment of the present utility model provides a kind of coal-bed methane seepage slip casting analogue experiment installation, described
Coal-bed methane seepage slip casting analogue experiment installation includes nitrogen cylinder 1, first gas connecting tube 161, second gas connecting tube 162, gas
Body control valve 18, pressure gauge 2, the first check valve 31, the second check valve 32, the first threeway 51, the second threeway 52, analogue means
60th, gas liquid two purpose valve 4, the first fluid connection tube 171, second liquid connecting tube 172, slush pump 8, slurry-storing container 19, signal
Transmission line 10, sealed interface 11, soil pressure cell 7 and deformeter 15, the nitrogen cylinder 1 and first gas connecting tube 161 and second
Gas connection pipe 162 is connected, and the first gas connecting tube 161 is connected through the first check valve 31 with the side of the first threeway 51, institute
The upper end that the lower end of the first threeway 51 is stated with analogue means 60 is connected, the upper end of the first threeway 51 and the gas liquid two purpose valve 4
Lower end connects, and first fluid connection tube 171 connects upper end and the slush pump 8 of gas liquid two purpose valve 4, the second liquid
Connecting tube 172 connects slush pump 8 and slurry-storing container 19, and being deposited in the slurry-storing container 19 has experiment drilling fluid, the mud
Pump 8 provides power and extract drilling fluid from slurry-storing container 19 out, connects through second liquid connecting tube 172, slush pump 8, the first liquid
Adapter 171 and gas-liquid Two purpose valve 4 enter analogue means 60, are used to control drilling fluid by opening the gas liquid two purpose valve 4
Injection analogue means 60, while prevent the leakage of nitrogen.
The analogue means 60 includes the first liquid storage unit 61, the second liquid storage unit 62, position-limiting unit 63 and coal sample Guan Dan
Member 64, the upper and lower ends of coal sample pipe unit 64 are networks, and the side of the analogue means 60 is transparent material, in order to
Observation simulates result, and the coal sample pipe unit 64 is fixed in analogue means 60 by position-limiting unit 63, the coal sample pipe unit
Storage has coal sample in 64, and first liquid storage unit 61 is located at the top of coal sample pipe unit 64, and second liquid storage unit 62 is located at
The lower section of coal sample pipe unit 64, after drilling fluid enters the analogue means 60, is stored in the first liquid storage unit 61, the nitrogen cylinder 1
Nitrogen is inputted to the first liquid storage unit 61 by first gas connecting tube 161, nitrogen is to the drilling fluid in the first liquid storage unit 61
Apply downward pressure, simulate downhole drill pneumatics wind pressure.
In a preferred embodiment, the volume of the liquid storage unit 62 of the first liquid storage unit 61 and second is 100ml, described
The inner space of coal sample pipe unit 64 is φ 50 × 100, and volume is 200ml.
Drilling fluid in first liquid storage unit 61 enters under air pressure and Action of Gravity Field through the coal sample in coal sample pipe unit 64
Enter the second liquid storage unit 62, the lower end of the second liquid storage unit 62 is connected with the upper end of the second threeway 52, under second threeway 52
Connection sealing joint 11 is held, the seal nipple 11 avoids drilling fluid from overflowing, second check valve of side of the second threeway 52
32 are connected with the second connecting tube 162, and the nitrogen cylinder 1 inputs nitrogen by the second connecting tube 162 to the second liquid storage unit 62,
Nitrogen in second liquid storage unit 62 applies a upward power to the coal sample in coal sample pipe unit 64, to simulate original coal
Layer atmospheric pressure.
Gas control valve 18 and pressure are provided with the first gas connecting tube 161 and second gas connecting tube 162
Table 2, the pressure gauge 2 show the nitrogen pressure force value of nitrogen cylinder output, and the gas control valve 18 adjusts the nitrogen of nitrogen cylinder output
Air pressure force value.
In a preferred embodiment, the nitrogen pressure force value in the first gas connecting tube 161 is set to be more than described second
Nitrogen pressure force value in gas connection pipe 162.
The soil pressure cell 7 is fixed in the coal sample of the coal sample pipe unit 64, the soil pressure cell 7 have it is multiple, it is more
Individual soil pressure cell 7 is connected with signal transmssion line 10, and the signal transmssion line 10 passes through the second liquid storage unit the 62, the 2nd 3 successively
Logical 52 and seal nipple 11 be connected with deformeter 15, the strain size in the real-time perception coal sample pipe unit 64 of soil pressure cell 7,
The signal transmssion line 10 transmits data-signal, and strain data is converted to pressure data and shows pressure by the deformeter 15
Data.
In simulated experiment, first, the nitrogen cylinder 1 passes through the threeway 52 to second of second gas connecting tube 162 and second
Liquid storage unit 62 inputs nitrogen, and the pressure gauge 2 in the second gas connecting tube 162 shows that second gas connecting tube 162 exports
Real-time nitrogen pressure data, the gas control valve 18 in the second gas connecting tube 162 controls nitrogen output, to described the
The preset pressure value of two check valve 32, when air pressure reaches preset value in the second liquid storage unit 62, second check valve 32 close with
Air pressure is kept, the second gas connecting tube 162 stops inputting gas to the first liquid storage unit 61, when in the second liquid storage unit 62
When air pressure is less than preset value, second check valve 32 is opened, and the second gas connecting tube 162 continues to the second liquid storage unit
For 62 input gases to keep the air pressure in the second liquid storage unit 62, nitrogen produces one to the coal sample in coal sample pipe unit 64 upwards
Power, to simulate primitive coalbed atmospheric pressure.
Then, the slush pump 8 is started, the drilling fluid in the slurry-storing container 19 is through second liquid connecting tube 172, mud
Pump 8, the first fluid connection tube 171 and gas-liquid Two purpose valve 4 enter the first liquid storage unit 61, when in first liquid storage unit 61
After being injected into the drilling fluid of predetermined amount, the slush pump 8 is first closed, turns off gas liquid two purpose valve 4, in order to avoid nitrogen leaks, bored
Well liquid flows to the second liquid storage unit 62 through coal sample pipe unit 64 under gravity.
Finally, the nitrogen cylinder 1 is inputted by the threeway 51 of first gas connecting tube 161 and first to the first liquid storage unit 61
Nitrogen, the pressure gauge 2 in the first gas connecting tube 161 show the real-time nitrogen pressure of the output of first gas connecting tube 161
Data, the gas control valve 18 in the first gas connecting tube 161 controls output pressure, default to first check valve 31
Atmospheric pressure value, when air pressure reaches preset value in the first liquid storage unit 61, first check valve 31 is closed to keep air pressure, described
First gas connecting tube 161 stops inputting nitrogen to the first liquid storage unit 61；When in the first liquid storage unit 61 air pressure less than default
During value, first check valve 31 is opened, the first gas connecting tube 161 continue to the first liquid storage unit 61 input gas with
The air pressure in the first liquid storage unit 61 is kept, nitrogen produces a downward pressure to the drilling fluid in the first liquid storage unit 61,
To simulate downhole drill pneumatics wind pressure.
The nitrogen pressure and drilling fluid cooperate, the downhole drill pneumatics wind pressure and primitive coalbed air pressure of simulation
Power, so as to simulate under different coal gas reset pressure, slip casting change in depth situation in coal seam is deep in order to find out default slip casting
Desired optimum pressure is spent, the real-time perception of the soil pressure cell 7 strain size in the coal sample pipe unit 64, the signal transmssion line
Strain data information transmission will be strained size and is converted into pressure value and shows by 10 to deformeter 15, the deformeter 15.
Herein, the involved noun of locality such as forward and backward, upper and lower is to be located at parts in accompanying drawing in figure and zero
The mutual position of part is intended merely to the clear of expression technology scheme and conveniently come what is defined.It should be appreciated that the noun of locality
Use should not limit the claimed scope of the application.
In the case where not conflicting, the feature in embodiment and embodiment herein-above set forth can be combined with each other.
Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit the utility model
Within new spirit and principle, any modification, equivalent substitution and improvements made etc., guarantor of the present utility model should be included in
Within the scope of shield.
Claims (8)
- A kind of 1. coal-bed methane seepage slip casting analogue experiment installation, it is characterised in that：The coal-bed methane seepage slip casting simulated experiment dress Put including nitrogen cylinder, gas connection pipe, check valve, threeway, analogue means, fluid connection tube, slush pump and slurry-storing container, it is described Gas connection pipe connects nitrogen cylinder and check valve, and the threeway connection analogue means and check valve, the nitrogen cylinder pass through gas Connecting tube and threeway input nitrogen to analogue means, and being deposited in the slurry-storing container has drilling fluid, and the slush pump passes through liquid Drilling fluid is transported in analogue means by connecting tube, and nitrogen cooperates with drill-in fluid in analogue means, so as to simulate drilling well Pressure.
- 2. coal-bed methane seepage slip casting analogue experiment installation as claimed in claim 1, it is characterised in that：On the gas connection pipe Provided with gas control valve and pressure gauge, the pressure gauge shows the nitrogen pressure force value of nitrogen cylinder output, and the gas control valve is adjusted Save the nitrogen pressure force value of nitrogen cylinder output.
- 3. coal-bed methane seepage slip casting analogue experiment installation as claimed in claim 2, it is characterised in that：The analogue experiment installation Also include sealed interface and gas-liquid Two purpose valve, the gas connection pipe connects including first gas connecting tube with second gas Pipe, the threeway include the first threeway and the second threeway, and the check valve includes the first check valve and the second check valve, and described the One threeway side is connected by the first check valve with first gas connecting tube, and the first threeway upper end connects gas liquid two purpose valve Door, the first threeway lower end are connected with analogue means upper end, and the second threeway side passes through the second check valve and the second gas Body connecting tube is connected, and the second threeway upper end is connected with analogue means lower end, and the second threeway lower end is close by sealed interface Envelope.
- 4. coal-bed methane seepage slip casting analogue experiment installation as claimed in claim 3, it is characterised in that：The fluid connection tube bag The first fluid connection tube and second liquid connecting tube are included, first fluid connection tube connects slush pump and gas-liquid Two purpose valve, The second liquid connecting tube connection slush pump and slurry-storing container.
- 5. coal-bed methane seepage slip casting analogue experiment installation as claimed in claim 4, it is characterised in that：The analogue means includes First liquid storage unit, the second liquid storage unit, position-limiting unit and coal sample pipe unit, the coal sample pipe unit upper and lower ends are grid knots Structure, the coal sample pipe unit are fixed in analogue means by position-limiting unit, and being deposited in the coal sample pipe unit has coal sample, described First liquid storage unit is located above coal sample pipe unit, and second liquid storage unit is located at below coal sample pipe unit, and drilling fluid enters After the analogue means, the first liquid storage unit is first stored in, then under air pressure and Action of Gravity Field, through the coal in coal sample pipe unit Sample enters the second liquid storage unit.
- 6. coal-bed methane seepage slip casting analogue experiment installation as claimed in claim 5, it is characterised in that：The nitrogen cylinder passes through One gas connection pipe inputs nitrogen to the first liquid storage unit, and nitrogen is in the drilling fluid in the first liquid storage unit and coal sample pipe unit Coal sample produce a downward pressure, to simulate downhole drill pneumatics wind pressure, the nitrogen cylinder is connected by second gas Pipe inputs nitrogen to the second liquid storage unit, and the nitrogen in second liquid storage unit applies one to the coal sample in coal sample pipe unit Upward power, to simulate primitive coalbed atmospheric pressure, the nitrogen pressure force value exported in the first gas connecting tube is more than described the The nitrogen pressure force value exported in two gas connection pipes.
- 7. coal-bed methane seepage slip casting analogue experiment installation as claimed in claim 6, it is characterised in that：The coal-bed methane seepage note Slurry analogue experiment installation also includes soil pressure cell, deformeter and signal transmssion line, and the soil pressure cell is fixed on coal by coal sample In sample pipe unit, the signal transmssion line connection soil pressure cell and deformeter, the soil pressure cell collection strain size, the letter Strain data is switched to pressure data and shows pressure data by number transmission line strain data signal, the deformeter.
- 8. coal-bed methane seepage slip casting analogue experiment installation as claimed in claim 7, it is characterised in that：The soil pressure cell has more It is individual.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720318887.8U CN207007656U (en) | 2017-03-29 | 2017-03-29 | A kind of coal-bed methane seepage slip casting analogue experiment installation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720318887.8U CN207007656U (en) | 2017-03-29 | 2017-03-29 | A kind of coal-bed methane seepage slip casting analogue experiment installation |
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| CN207007656U true CN207007656U (en) | 2018-02-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106841007A (en) * | 2017-03-29 | 2017-06-13 | 中国地质大学（武汉） | A kind of coal-bed methane seepage slip casting analogue experiment installation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106841007A (en) * | 2017-03-29 | 2017-06-13 | 中国地质大学（武汉） | A kind of coal-bed methane seepage slip casting analogue experiment installation |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180213 Termination date: 20190329 |