CN209724305U - A kind of coal-bed-gas production-increase pressure disturbance device - Google Patents
A kind of coal-bed-gas production-increase pressure disturbance device Download PDFInfo
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- CN209724305U CN209724305U CN201920295345.2U CN201920295345U CN209724305U CN 209724305 U CN209724305 U CN 209724305U CN 201920295345 U CN201920295345 U CN 201920295345U CN 209724305 U CN209724305 U CN 209724305U
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Abstract
The utility model relates to a kind of coal-bed-gas production-increase pressure disturbance devices, including gas compressor, gas compressor, which is connected with, send nitrogen the nitrogen making machine into gas compressor, nitrogen making machine is connected with for air to be sent to the air compressor machine into nitrogen making machine, first emptying will be extracted out by the sewage inside sleeve pipe in coal seam when use, close pumping unit, pass through air compressor machine, nitrogen making machine and gas compressor disturb compressed nitrogen in gas sprue bushing, gas is disturbed by the crack injection coal seam in the intercommunicating pore and coal seam on casing, stop gas injection when reaching setting pressure, close the first valve, open the second valve, it is connected to fuel gas and dust separator with escape pipe, coal bed gas and coal dust in coal seam can be in the disturbance gas sleeve pipe of injection and entering in gas-dust separator by escape pipe and are filtered separation, gas into Enter and be acquired coal bed gas in gas transmission line, coal dust is separated, and also some coal dust sinks to sleeve bottom under the effect of gravity.
Description
Technical field
The utility model relates to cbm development fields, and in particular to a kind of coal-bed-gas production-increase pressure disturbance device.
Background technique
China is the country of coal more than one, and coal occupies 60% of energy-consuming or more, a large amount of methane gas is adsorbed in coal
Body is commonly called as methane gas or coal bed gas.The difference of coal bed gas and conventional gas is storing state, after the former is adsorbed state
Person is free state.Compared with conventional gas, coal bed gas is referred to as non-conventional gas.Coal bed gas is both high-grade energy and coal mine
The security risk of exploitation.
As China has formulated subsidy to non-conventional gas exploitation and the attention of Safety of Coal Mine Production, the exploitation for coal bed gas
Policy encourages the exploitation of all trades and professions investment coal bed gas.Everybody relies on the mature technology of the construction of natural gas fields, opens coal bed gas
Hair, poor effect, well yield are extremely low.
Existing coal-bed gas exploitation commonly uses the devices such as pumping unit, casing and the oil pipe that is set in casing, in oil pipe
Equipped with sucker rod, the upper end of sucker rod is connect with pumping unit is pumped and is drawn water.Casing is placed in underground, sleeve bottom passes through
Coal seam, there are crack in coal seam, in being provided with intercommunicating pore in the covering part of coal seam on casing, in coal seam water and coal seam
Gas sleeve pipe.The upper end of casing is provided with escape pipe, is connected with aspiration pump on escape pipe, for taking out the coal bed gas in casing
Out.But main problem is present in conventional gas during output, the not generation of solid powder, the seepage flow of natural gas is logical
Road is unimpeded always.And coal bed gas is during output, due to the decline of coal seam pressure, a large amount of coal dusts are generated, and block coal bed gas
Seepage channel, to cause single well productivity lower.
Utility model content
The purpose of the utility model is to provide a kind of coal-bed-gas production-increase that can be improved single well productivity pressure disturbance devices.
To achieve the above object, a kind of coal-bed-gas production-increase of the utility model uses following technical side with pressure disturbance device
A kind of case: coal-bed-gas production-increase pressure disturbance device, it is characterised in that: including the use being connected to for the escape pipe with sleeve upper end
In the gas compressor for being passed through disturbance gas into casing, gas compressor, which is connected with, send nitrogen the system into gas compressor
Nitrogen machine, nitrogen making machine are connected with for sending air to the air compressor machine into nitrogen making machine, and escape pipe passes through three-way connection and gas compression
Machine connection, another connector of three-way connection are connected with gas-dust separator, the company between three-way connection and gas compressor
It threads a pipe and is equipped with the first valve, be provided with the second valve on the connecting pipe between three-way connection and gas-dust separator.
The utility model has the beneficial effects that when using first emptying will be extracted out by the sewage inside sleeve pipe in coal seam, close
Pumping unit is closed, compressed nitrogen is disturbed in gas sprue bushing by air compressor machine, nitrogen making machine and gas compressor, disturbs gas
By stopping gas injection when reaching setting pressure, closing the first valve in the crack injection coal seam in the intercommunicating pore and coal seam on casing
Door, then opens the second valve, is connected to fuel gas and dust separator with escape pipe, and the coal bed gas and coal dust in coal seam can be with
In the disturbance gas sleeve pipe of injection and enter gas-dust separator kind by escape pipe and be filtered separation, gas into
Enter and be acquired coal bed gas in gas transmission line, coal dust is separated, and also some coal dust sinks to casing under the effect of gravity
Bottom.
Further, it is possible to repeatedly carry out repeating the pressurization and pressure release in above-mentioned movement realization well, make coal seam " breathing ",
To achieve the purpose that pressure disturbance coal seam.By multiple pressure disturbance, seepage channel is dredged, the parsing of coal bed gas is excited；
Coal dust blocking seepage channel is also avoided simultaneously, achievees the purpose that volume increase.
Detailed description of the invention
Fig. 1 is a kind of structural representation of one embodiment of coal-bed-gas production-increase pressure disturbance device of the utility model
Figure.
Specific embodiment
The embodiment of a kind of coal-bed-gas production-increase pressure disturbance device of the utility model, as shown in Figure 1, being worn including bottom
Cross the casing 1 in coal seam, in being provided with intercommunicating pore in the covering part of coal seam on casing 1, water, gas and coal dust can pass through intercommunicating pore.
It is provided with oil pipe 4 in casing 1, beam hanger 5 is provided in oil pipe, the upper end of beam hanger is connected with pumping unit 9, and the lower end of beam hanger is provided with
Oil pump 8.The upper end of casing 1 is communicated with escape pipe 16, and the upper end of oil pipe is provided with water flowing out structure 10, for arranging the water in casing
To reservoir.The above technology is the prior art, its specific structure is not described in detail in this patent.Outlet pipe 11 passes through threeway
Connector 17 is communicated with the gas compressor 12 for being passed through disturbance gas into casing, and gas compressor 12, which is connected with, send nitrogen
Nitrogen making machine 13 into gas compressor, nitrogen making machine are connected with for air to be sent to the air compressor machine 14 into nitrogen making machine.Three connect
First 17 another connector is connected with gas-dust separator 18, and feed-line 19 is additionally provided on gas-dust separator 18.
Connecting pipe between three-way connection 17 and gas compressor 12 is equipped with the first valve 15, three-way connection 17 and gas-dust
The second valve 16 is provided on connecting pipe between separator 18.
A kind of coal-bed-gas production-increase of the utility model when in use, contains water 6 and coal seam with pressure disturbance device in coal seam 2
Gas 7 must will extract emptying out by the sewage in 2 sleeve pipe of coal seam by pumping unit before the interior pressurization of casing, make the pressurization in later period
It is unblocked with pressure release, pumping unit is closed after water emptying；Compressed nitrogen is disturbed by air compressor machine, nitrogen making machine and gas compressor
In body sprue bushing of taking offence, disturbance gas injects in coal seam 2 by the crack 3 in the intercommunicating pore and coal seam on casing, reaches and sets
Stop gas injection when constant-pressure, then open fuel gas and dust separator, the coal bed gas 7 and coal dust 20 in coal seam 2 can be with injections
Disturbance gas sleeve pipe in and enter gas-dust separator kind by escape pipe and be filtered separation, gas is into defeated
Coal bed gas is acquired in gas pipeline, coal dust is separated, and also some coal dust sinks to sleeve bottom under the effect of gravity.
The gas of pressurization is nitrogen, and the gas of pressure release is the mixture of the gases and nitrogen such as methane.It can repeatedly carry out repeating above-mentioned dynamic
Make the pressurization and pressure release in realization well, make coal seam " breathing ", to achieve the purpose that pressure disturbance coal seam.By multiple
Pressure disturbance dredges seepage channel, excites the parsing of coal bed gas；Coal dust blocking seepage channel is also avoided simultaneously, reaches volume increase
Purpose.
The utility model it is a kind of using the above-mentioned coal-bed-gas production-increase method for increasing yield of coal bed gas of pressure disturbance device, including
Following steps:
1) emptying out is extracted the water in coal seam in sleeve pipe using pumping unit；
2) compressed air is sent to nitrogen making machine by air compressor machine, nitrogen making machine send nitrogen to gas compressor, by gas compression
Compressed nitrogen is disturbed gas and is passed through in casing by machine, and disturbance gas is entered in coal seam by the intercommunicating pore on casing wall
Crack in, and then disturb gas expand in entire coal seam and contact mixing with the coal bed gas in coal seam, the pressure in casing
Stop the conveying disturbance gas into casing when reaching setting value, closes the first valve；
3) the second valve is opened, gas-dust separator and casing are connected to, the pressure in casing is discharged, in coal seam
Coal bed gas and coal dust enter in casing with disturbance gas, by gas-dust separator by pulverized-coal filtering, by coal bed gas
It is conveyed with disturbance gas.
In step 2, pressure set points are 5MPa in pipe.
In step 2, when set overpressure reaches 5MPa, stop gas injection 5 hours.
In step 3), after the pressure release in casing, step 2 and step 3) are repeated, repeatedly pressurization and pressure release, make coal
Layer " breathing " gets up.
In the other embodiments of the utility model, stop gas injection when gas pressure may be 2MPa in casing；It can also
To be adjusted according to realistic well condition, for example, 1MPa；The time for stopping gas injection can also being adjusted according to the actual situation.
Claims (1)
1. a kind of coal-bed-gas production-increase pressure disturbance device, it is characterised in that: including being connected to for the escape pipe with sleeve upper end
For be passed through into casing disturbance gas gas compressor, gas compressor, which is connected with, send nitrogen into gas compressor
Nitrogen making machine, nitrogen making machine is connected with for sending air to the air compressor machine into nitrogen making machine, and escape pipe passes through three-way connection and gas
Compressor connection, another connector of three-way connection is connected with gas-dust separator, between three-way connection and gas compressor
Connecting pipe be equipped with the first valve, be provided with second on the connecting pipe between three-way connection and gas-dust separator
Valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920295345.2U CN209724305U (en) | 2019-03-08 | 2019-03-08 | A kind of coal-bed-gas production-increase pressure disturbance device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920295345.2U CN209724305U (en) | 2019-03-08 | 2019-03-08 | A kind of coal-bed-gas production-increase pressure disturbance device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209724305U true CN209724305U (en) | 2019-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920295345.2U Active CN209724305U (en) | 2019-03-08 | 2019-03-08 | A kind of coal-bed-gas production-increase pressure disturbance device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798095A (en) * | 2019-03-08 | 2019-05-24 | 南阳市天达同兴石油技术有限公司 | A kind of coal-bed-gas production-increase pressure disturbance device and method for increasing yield of coal bed gas |
-
2019
- 2019-03-08 CN CN201920295345.2U patent/CN209724305U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798095A (en) * | 2019-03-08 | 2019-05-24 | 南阳市天达同兴石油技术有限公司 | A kind of coal-bed-gas production-increase pressure disturbance device and method for increasing yield of coal bed gas |
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