CN207513626U - A kind of ground extraction coal-bed gas device - Google Patents
A kind of ground extraction coal-bed gas device Download PDFInfo
- Publication number
- CN207513626U CN207513626U CN201720594675.2U CN201720594675U CN207513626U CN 207513626 U CN207513626 U CN 207513626U CN 201720594675 U CN201720594675 U CN 201720594675U CN 207513626 U CN207513626 U CN 207513626U
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- China
- Prior art keywords
- screen casing
- support screen
- coal
- coal seam
- gas
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Abstract
The utility model discloses a kind of ground extraction coal-bed gas devices, and including ontology, the ontology includes work car, work string oil pipe, downhole orientation steering tool, nitrogen making machine, nitrogen, gas collecting, and the advantageous effect that the utility model is reached is：By using high pressure mixing liquid as working media, injection cutting drilling, high pressure bubble expands rapidly " explosion " and generates bump wave, shock wave is made to carry out invigoration effect to coal seam near radial hole, improve eyelet coal seam mobility nearby, it realizes underbalance drilling, reduces the pollution to coal seam in drilling process；Screen casing is supported to be inserted into radial hole using made of high-strength PVC material, play support water conservancy diversion gas channel, branched radial hole forms quincunx radial hole, increases individual well coal seam insult area.Simultaneously during draining coal seam gas, using pressure pumping technology, high pressure nitrogen is injected into radial direction screen casing in coal seam, dredging support screen casing, then extract nitrogen and coal-bed gas out by negative pressure on ground by vertical shaft.
Description
Technical field
The utility model is related to a kind of Coal-seam Gas Recovery Technologies, more particularly to a kind of ground extraction coal-bed gas device belongs to
In coal mine gas production technique field.
Background technology
As coal mine development and pit mining depth are continuously increased, gas bearing capacity and pressure are more and more big, easily cause
Serious accident, safety management difficulty are also increasing.Meanwhile with the raising of social civilization level, the country and people group
Requirement of the crowd to mine safety is further stringent and strong.Coal mining enterprise has put into gas control a large amount of fund and manpower money
Source is restricted by many factors, and gas control input is big, and ground gas extraction technology is so far there has been no bigger progress, therefore,
Above-mentioned in order to solve the problems, such as, the utility model proposes a kind of ground extraction coal-bed gas devices.
Utility model content
The utility model provides a kind of ground extraction coal-bed gas device, is situated between by using high pressure mixing liquid as work
Matter, injection cutting drilling, high pressure bubble expand rapidly " explosion " and generate bump wave, make shock wave to coal near radial hole
Layer carries out invigoration effect, improves eyelet coal seam mobility nearby, realizes underbalance drilling, reduces the dirt to coal seam in drilling process
Dye；Screen casing is supported to be inserted into radial hole using made of high-strength PVC material, play support water conservancy diversion gas channel, branched radial hole
Quincunx radial hole is formed, increases individual well coal seam insult area；Radial hole in horizontal direction jetted layers is interconnected, and realizes area
Domain joint decompression, reaches and improves fully efficiently using for resource, multilayer coal while working seam gas, reach the maximum of investment
Change.
In order to solve the above-mentioned technical problem, the utility model provides following technical solution：
A kind of ground extraction coal-bed gas device of the utility model, including ontology, the ontology includes work car, instrumentation tubes
Column oil pipe and downhole orientation steering tool, the work string oil pipe are located at the lower section of the work car, the work string oil
Pipe is internally provided with steel wire cable and support screen casing follow-up boring means combination, the support screen casing follow-up boring means combination top
Equipped with rope socket is salvaged, the steel wire cable combines connection by the salvaging rope socket with the support screen casing follow-up boring means,
The support screen casing follow-up boring means combination top is equipped with rope salvaging head, and the rope salvaging head connects with the salvaging rope socket
Connect, it is described support screen casing follow-up boring means combination bottom end be equipped with piston, the downhole orientation steering tool by connector with
The support screen casing follow-up boring means combines connection, and is followed up in boring means combination insertion coal seam by the support screen casing
Portion, described downhole orientation steering tool one end are connected with flexible high pressure playpipe, and the flexible high pressure playpipe both sides are equipped with
Screen casing is supported, described support screen casing one end is connected with pulse crawl device, high pressure mixing liquid, institute are equipped between the pulse crawl device
It states high pressure mixing liquid and several jetted layers, the jetted layers is formed in the coal seam internal spray by the flexible high pressure playpipe
Several radial holes are internally provided with, the support screen casing is inserted by the pulse crawl device inside the radial hole.
Preferably, the coal seam is equipped with several support screen casings, shape on the support screen casing inside the coal seam
Into there is several jetted layers, the radial hole in the jetted layers of several support screen casing horizontal directions is interconnected.
Preferably, air compressor machine is installed, the air compressor machine is connect with the steel wire cable on the work car.
Preferably, the work car side is equipped with pump truck, and the pump truck top is equipped with gas-liquid injection manifold, the pump truck one
Side is connected with wellhead assembly, and the wellhead assembly is connected with ground metering device, the ground metering device by winch rope
Top is equipped with water pot, and the water pot is connect with the gas-liquid injection manifold.
Preferably, the gas-liquid injection manifold connection that the nitrogen making machine of the ground setting is connected with well head.
The advantageous effect that the utility model is reached is：A kind of ground extraction coal-bed gas device of the utility model, passes through
Using high pressure mixing liquid as working media, injection cutting is crept into, and high pressure bubble expands rapidly " explosion " and generates bump wave,
Shock wave is made to carry out invigoration effect to coal seam near radial hole, improves eyelet coal seam mobility nearby, realizes underbalance drilling,
Reduce the pollution to coal seam in drilling process；Screen casing is supported to be inserted into radial hole using made of high-strength PVC material, play branch
Water conservancy diversion gas channel is supportted, branched radial hole forms quincunx radial hole, increases individual well coal seam insult area；Horizontal direction jetted layers
On radial hole be interconnected, realize regional combination decompression, reach and improve resource and fully efficiently use, multilayer coal exploits simultaneously
Coal-bed gas reaches the maximization of returns of investment.
Description of the drawings
Attached drawing is used to provide a further understanding of the present invention, and a part for constitution instruction, with this practicality
Novel embodiment for explaining the utility model, does not form the limitation to the utility model together.In the accompanying drawings：
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the utility model support screen casing follow-up boring means combination and the structural representation of downhole orientation steering tool
Figure；
Fig. 3 is the structure diagram that the utility model support screen casing is inserted into radial hole；
Fig. 4 is the structure diagram of the utility model jetted layers；
Fig. 5 is the structure diagram of the quincunx radial bore of the utility model；
Fig. 6 is the utility model nitrogen making machine, work string oil pipe and gas collecting connection diagram.
In figure：1-ontology, 2-work car, 3-air compressor machine, 4-pump truck, 5-gas-liquid injection manifold, 6-well head dress
Put, 7-winch rope, 8-ground metering device, 9-water pot, 10-coal seam, 11-work string oil pipe, 12-steel wire rope
Rope, 13-salvaging rope socket, the combination of 14-support screen casing follow-up boring means, 15-downhole orientation steering tool, 16-connect
Head, 17-rope salvaging head, 18-piston, 19-flexible high pressure playpipe, 20-pulse crawl device, 21-support screen casing,
22-high pressure mixing liquid, 23-radial hole, 24-jetted layers, 25-nitrogen making machine, 26-nitrogen, 27-gas collecting.
Specific embodiment
The preferred embodiment of the utility model is illustrated below in conjunction with attached drawing, it should be understood that described herein excellent
Embodiment is selected to be only used for describing and explaining the present invention, is not used to limit the utility model.
Embodiment
As shown in figures 1 to 6, a kind of ground extraction coal-bed gas device of the utility model, including ontology 1, the ontology 1 wraps
Work car 2, work string oil pipe 11, downhole orientation steering tool 15, nitrogen making machine 25, nitrogen 26 and gas collecting 27 are included,
The work string oil pipe 11 is located at the lower section of the work car 2, and the work string oil pipe 11 is internally provided with steel wire cable 12
14 are combined with support screen casing follow-up boring means, the support screen casing follow-up boring means combines 14 tops and is equipped with salvaging rope socket
13, the steel wire cable 12 combines 14 connections by the salvaging rope socket 13 with the support screen casing follow-up boring means, described
Screen casing follow-up boring means is supported to combine 14 tops and is equipped with rope salvaging head 17, the rope salvaging head 17 and the salvaging rope socket
13 connections, the support screen casing follow-up boring means combine 14 bottom ends and are equipped with piston 18, and the downhole orientation steering tool 15 is logical
It crosses connector 16 and combine 14 connections with institute support screen casing follow-up boring means, and pass through the support screen casing follow-up boring means group
It closes 14 to be inserted into inside coal seam 10, described 15 one end of downhole orientation steering tool is connected with flexible high pressure playpipe 19, the flexibility
19 both sides of high-pressure injection pipe are equipped with support screen casing 21, and 21 one end of the support screen casing is connected with pulse crawl device 20, the arteries and veins
It rushes between crawl device 20 equipped with high pressure mixing liquid 22, the high pressure mixing liquid 22 is by the flexible high pressure playpipe 19 described
10 internal spray of coal seam forms several jetted layers 24, and the jetted layers 24 are internally provided with several radial holes 23, the support screen casing
21 are inserted by the pulse crawl device 20 inside the radial hole 23, and the nitrogen making machine 25, the nitrogen 26, gas are collected
Pipeline 27 is connect with the work string oil pipe 11.
In the present embodiment, the coal seam 10 is equipped with several support screen casings 21, the branch inside the coal seam 10
It supports and several jetted layers 24 is formed on screen casing 21, it is described in the jetted layers 24 of several support 21 horizontal directions of screen casing
Radial hole 23 is interconnected, and realizes regional combination decompression, reaches and improve fully efficiently using for resource, multilayer coal while mine coal
Layer gas, reaches the maximization of returns of investment.
In the present embodiment, air compressor machine 3 is installed on the work car 2, the air compressor machine 3 connects with the steel wire cable 12
It connects, steel wire cable 12 is controlled to move by air compressor machine 3.
In the present embodiment, 2 side of work car is equipped with pump truck 4, and 4 top of pump truck is equipped with gas-liquid injection manifold 5, institute
It states 4 side of pump truck and is connected with wellhead assembly 6, the wellhead assembly 6 is connected with ground metering device 8 by winch rope 7, described
8 top of ground metering device is equipped with water pot 9, and the water pot 9 is connect with the gas-liquid injection manifold 5.
In the present embodiment, the gas-liquid injection manifold 5 that the nitrogen making machine 25 of ground setting is connected with well head
Connection.
Specifically：14 10 well section of coal seam after vertical well reaming is combined using support screen casing follow-up boring means, is passed through
Downhole orientation steering tool 15, using high pressure drill bit, along different azimuths, after reaming, radial direction is crept into out in coal seam 10
One group or it is distributed the radial hole 23 of multigroup (multiple seam), tool certain diameter size and length up and down, and in these radial holes 23
Follow up high-strength PVC support screen casing 21 of the tripping in deflector hole, is formed with the quincunx radial level of support and diversion function
Hole, quincuncial radial hole 23 is easy for construction simple, and cost is relatively low；Thoroughly overcome pressure break after, coal dust block the problem of, be suitable for
Various coal seams 10；Activate a large amount of stripper wells and abandoned well；New large scale equipment need not be added；The technology not only there is water conservancy diversion to make
With, and increase yield in cave can be made with reaming, while be interconnected between adjacent quincuncial radial hole 23, realize region connection
Decompression is closed, reaches and improves fully efficiently using for resource, working seam gas, the benefit for reaching investment are maximum simultaneously for multilayer coal
Change.
After the completion of well sinker makees, 26 pressure break of high pressure nitrogen is injected into vertical shaft, increases by 10 gas permeability of coal seam, and gas is taken out
Go out；Intubation well is carried out using implement to gulp down pressure (taking out pressure) operation, device in Gas is extracted out together with nitrogen 26；Extraction process
In, coal dust and condensed water can block support screen casing 21 in coal seam, by being pressed into high pressure nitrogen 26 in real time and taking out pressure operation, by coal dust
It pumps out, dredges exhaust passage, improve the continuous gas drainage results of gas.
Finally it should be noted that：The above descriptions are merely preferred embodiments of the present invention, is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it can still modify to the technical solution recorded in foregoing embodiments or to which part technical characteristic
Carry out equivalent replacement.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (5)
1. a kind of ground extraction coal-bed gas device, including ontology (1), it is characterised in that：The ontology (1) is including work car
(2), work string oil pipe (11), downhole orientation steering tool (15), nitrogen making machine (25), nitrogen (26) and gas collecting
(27), the work string oil pipe (11) is internally provided with positioned at the lower section of the work car (2), the work string oil pipe (11)
Steel wire cable (12) and support screen casing follow-up boring means combination (14), support screen casing follow-up boring means combination (14) top
End, which is equipped with, salvages rope socket (13), and the steel wire cable (12) is crept by the salvaging rope socket (13) and the support screen casing follow-up
Tool combinations (14) connect, and described support screen casing follow-up boring means combination (14) top is equipped with rope salvaging head (17), described
Rope salvaging head (17) is connect with the salvaging rope socket (13), and described support screen casing follow-up boring means combination (14) bottom end is equipped with
Piston (18), the downhole orientation steering tool (15) are combined by connector (16) with the support screen casing follow-up boring means
(14) it connects, and internal by support screen casing follow-up boring means combination (14) insertion coal seam (10), the downhole orientation
Steering tool (15) one end is connected with flexible high pressure playpipe (19), and flexible high pressure playpipe (19) both sides are equipped with support
Screen casing (21), described support screen casing (21) one end are connected with pulse crawl device (20), are equipped between the pulse crawl device (20)
High pressure mixing liquid (22), the high pressure mixing liquid (22) are internal in the coal seam (10) by the flexible high pressure playpipe (19)
Injection forms several jetted layers (24), and the jetted layers (24) are internally provided with several radial holes (23), the support screen casing (21)
Radial hole (23) inside, the nitrogen making machine (25), the nitrogen (26), gas are inserted by the pulse crawl device (20)
Collecting (27) is connect with the work string oil pipe (11).
2. a kind of ground extraction coal-bed gas device according to claim 1, it is characterised in that：It is set on the coal seam (10)
There are several support screen casings (21), several jetted layers are formed on the internal support screen casing (21) of the coal seam (10)
(24), the radial hole (23) in the jetted layers (24) of several described support screen casing (21) horizontal directions is interconnected.
3. a kind of ground extraction coal-bed gas device according to claim 1, it is characterised in that：On the work car (2)
Air compressor machine (3) is installed, the air compressor machine (3) connect with the steel wire cable (12).
4. a kind of ground extraction coal-bed gas device according to claim 1, it is characterised in that：The work car (2) one
Side is equipped with pump truck (4), and pump truck (4) top is equipped with gas-liquid injection manifold (5), and pump truck (4) side is connected with well head dress
It puts (6), the wellhead assembly (6) is connected with ground metering device (8), the ground metering device (8) by winch rope (7)
Top is equipped with water pot (9), and the water pot (9) connect with the gas-liquid injection manifold (5).
5. a kind of ground extraction coal-bed gas device according to claim 1, it is characterised in that：The institute of the ground setting
State gas-liquid injection manifold (5) connection that nitrogen making machine (25) is connected with well head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720594675.2U CN207513626U (en) | 2017-05-25 | 2017-05-25 | A kind of ground extraction coal-bed gas device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720594675.2U CN207513626U (en) | 2017-05-25 | 2017-05-25 | A kind of ground extraction coal-bed gas device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207513626U true CN207513626U (en) | 2018-06-19 |
Family
ID=62531316
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720594675.2U Expired - Fee Related CN207513626U (en) | 2017-05-25 | 2017-05-25 | A kind of ground extraction coal-bed gas device |
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| Country | Link |
|---|---|
| CN (1) | CN207513626U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374665A (en) * | 2019-07-31 | 2019-10-25 | 湖南科技大学 | A kind of gas collection device and application method for pole weak seam extraction borehole |
| CN111364946A (en) * | 2020-03-18 | 2020-07-03 | 河南理工大学 | Airfoil type gas-water-slag separation device with drill rod sealing function and using method thereof |
| CN111456656A (en) * | 2020-03-18 | 2020-07-28 | 河南理工大学 | Coal mine underground bottom suction roadway cross-layer drilling blowout prevention hole construction method |
-
2017
- 2017-05-25 CN CN201720594675.2U patent/CN207513626U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374665A (en) * | 2019-07-31 | 2019-10-25 | 湖南科技大学 | A kind of gas collection device and application method for pole weak seam extraction borehole |
| CN110374665B (en) * | 2019-07-31 | 2024-03-19 | 湖南科技大学 | Gas collection device for extraction drilling of extremely soft coal seam and use method |
| CN111364946A (en) * | 2020-03-18 | 2020-07-03 | 河南理工大学 | Airfoil type gas-water-slag separation device with drill rod sealing function and using method thereof |
| CN111456656A (en) * | 2020-03-18 | 2020-07-28 | 河南理工大学 | Coal mine underground bottom suction roadway cross-layer drilling blowout prevention hole construction method |
| CN111364946B (en) * | 2020-03-18 | 2024-01-19 | 河南理工大学 | Wing type air-water-slag separation device with drill rod sealing function and application method thereof |
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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: 20180619 Termination date: 20190525 |