CN209568994U - A kind of low concentration wears a layer extraction borehole recovery type hole packer - Google Patents
A kind of low concentration wears a layer extraction borehole recovery type hole packer Download PDFInfo
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- CN209568994U CN209568994U CN201822233212.0U CN201822233212U CN209568994U CN 209568994 U CN209568994 U CN 209568994U CN 201822233212 U CN201822233212 U CN 201822233212U CN 209568994 U CN209568994 U CN 209568994U
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- Prior art keywords
- injection pipe
- drainage tube
- waterproof connector
- liquid injection
- thin diameter
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Abstract
The utility model discloses a kind of low concentrations to wear a layer extraction borehole recovery type hole packer, including orifice sealing device, drainage tube, orifice sealing device includes fast joint of waterpipe, threeway, Waterproof connector of cable, fluid injection valve, threeway one end is connected with fast joint of waterpipe, the threeway other end is connected with Waterproof connector of cable, the middle part installation fluid injection valve of threeway is simultaneously connected with the infusion device of bypass, drainage tube includes the liquid injection pipe of outer layer and the thin diameter drainage tube of internal layer, liquid injection pipe and fast joint of waterpipe are tightly connected, thin diameter drainage tube and Waterproof connector of cable are tightly connected.Mucus is repaired to injection sealing of hole between the liquid injection pipe and thin diameter drainage tube by the fluid injection valve in threeway in the orifice sealing device.Drilling leakage path can be repeated several times and carry out closure reparation, to enhance extraction borehole sealing quality, improve drilling gas extraction efficiency.
Description
Technical field
The utility model relates to coal bed gas extraction equipment technical field, specifically a kind of low concentration wears a layer extraction borehole band
Pressure injection liquid restorative procedure and a kind of recovery type hole packer, are particularly suitable for uplink and wear a layer extraction borehole, can repeatedly repair extraction brill
The leakage path in hole.
Background technique
Coal-bed gas is both the principal element and a kind of energy resources of preciousness for influencing safety of coal mines and efficiently producing.Watt
This extraction can guarantee that highly gassy mine, projecting mine are kept the safety in production, elimination coal mine gas explosion, or acquisition clean energy resource,
The important measure for increasing energy resource supply, reducing environmental pollution.
Coal bed gas extraction is to reduce coal seam gas-bearing capacity and gas pressure, prevention and treatment mine gas accident, ensure mine peace
The important technical produced entirely.Especially in recent years, with the increase of pit mining depth, coal-bed gas pressure, gas contain
Amount is significant to be increased, and coal and gas prominent risk increases, and projecting mine situation of production is severe.It is prominent in order to prevent and treat coal and gas
Accidents happened, and bottom plate lane uplink is worn a layer extraction borehole draining coal seam gas and is widely applied in projecting mine, becomes coal seam watt
The main pattern of this extraction.
After uplink wears layer extraction borehole sealing, since the deformation failure of bottom plate lane country rock acts on, extraction borehole is by country rock
The deformation such as absciss layer, the changing of the relative positions, extruding, causes extraction borehole country rock, drainage tube, sealing of hole sealing material to destroy to form leakage path, drops
Low gas extraction concentration, reduces the operational efficiency of extraction borehole.In order to promote the gas pumping effect of gas leakage extraction borehole,
The currently used secondary restorative procedure of low concentration extraction borehole mainly has extraction borehole of constructing again, blocks gas leakage drilling again,
These methods need extraction borehole of constructing again, second is that only can be carried out primary reparation, cannot repeatedly weigh first is that recovery project amount is big
It is multiple to repair, and hole packer cannot recycle, rehabilitation cost is high.
Utility model content
Exist to solve the problems, such as that above-mentioned low concentration wears a layer extraction borehole reparation, the utility model provides a kind of low concentration
Layer extraction borehole fluid injection recovery type hole packer with pressure is worn, can be repeated several times and closure reparation is carried out to extraction borehole leakage path, from
And enhance extraction borehole sealing quality, improve gas pumping effect.
In order to achieve the above objectives, using following technical scheme.
A kind of low concentration wears a layer extraction borehole recovery type hole packer, including orifice sealing device, drainage tube, the orifice sealing
Device includes fast joint of waterpipe, threeway, Waterproof connector of cable, fluid injection valve, described threeway one end and the fast joint of waterpipe
Be connected, the threeway other end is connected with the Waterproof connector of cable, the middle part of threeway installation fluid injection valve and with
The infusion device of bypass is connected, and the drainage tube includes the liquid injection pipe of outer layer and the thin diameter drainage tube of internal layer, the note
Liquid pipe and the fast joint of waterpipe are tightly connected, and the thin diameter drainage tube is from fast joint of waterpipe and Waterproof connector of cable
In pass through and connect sealing with Waterproof connector of cable.
After wearing the solidification of layer extraction borehole injection hole sealing section, because crustal stress acts on, cause the country rock for wearing layer extraction borehole,
Sealing section, liquid injection pipe formed leakage path, by the fluid injection valve in threeway in the orifice sealing device to the liquid injection pipe with
Injection sealing of hole repairs mucus between thin diameter drainage tube, occurs until thin diameter drainage tube returns slurry phenomenon, stops fluid injection, close note
Fluid valve, make sealing of hole repair mucus full of below the liquid injection pipe screen casing suction hole in drilling described in extraction and the liquid injection pipe and
Sealing of hole between thin diameter drainage tube repairs mucus section, then the thin diameter drainage tube is accessed underground pressure air, by described thin
Diameter drainage tube top suction hole repairs the pressurization of mucus section to sealing of hole, so that sealing of hole is repaired mucus logical into the extraction borehole gas leakage
The closure reparation to the extraction borehole leakage path is realized in road, can also be recycled as needed and be carried out fluid injection with pressure and pressurization behaviour
Make, realizes the closure reparation more perfect to extraction borehole leakage path.
The fast joint of waterpipe includes rope mother, snap ring, the first sealing ring, quick coupling ontology, gasket；The water pipe
The rope mother of quick coupling, snap ring, the first sealing ring are sequentially sleeved on the liquid injection pipe, then pass through silk with fast joint of waterpipe ontology
Button connection；The snap ring collects during tightening screw thread, on the inside of wedge-shaped striped tie tight the liquid injection pipe；First sealing
Circle setting connects the two closely between the quick coupling ontology and threeway.
The Waterproof connector of cable includes waterproof connector ontology, the second sealing ring, clamping head, and waterproof connector ontology is equipped with
Fixed jaw, the thin diameter drainage tube pass through orifice sealing device and extend into the liquid injection pipe for wearing layer extraction borehole；The waterproof connects
Head ontology is tightened with clamping head collects fixed jaw, and the fixed jaw on the waterproof connector ontology is fixed and made with the second sealing ring
Itself and the thin diameter extraction seal of tube.
The thin diameter drainage tube and liquid injection pipe are coaxially disposed, and the front end of the two is equipped with the sieve with several ventholes
Pipeline section, the thin diameter drainage tube top are equipped with extraction pipe plug, are equipped with fluid injection pipe plug, institute in the sieve tube segment of the liquid injection pipe
It states fluid injection pipe plug and is located at thin diameter drainage tube reality pipeline section and sieve tube segment adjoiner.
The thin diameter drainage tube top is more than the real pipeline section and sieve tube segment adjoiner 1m of liquid injection pipe.
The beneficial effects of the utility model are: the low concentration wears layer extraction borehole fluid injection recovery type hole packer through hole with pressure
Fluid injection valve on sealer for mouth repairs mucus to injection sealing of hole between liquid injection pipe and thin diameter drainage tube, then by thin diameter extraction
Tube top portion suction hole repairs mucus upper surface in sealing of hole and pressurizes to a layer extraction borehole injection pressure wind is worn, make sealing of hole repair mucus into
Enter after extraction borehole sealing of hole to wear the leakage path that a layer extraction borehole country rock, sealing section, liquid injection pipe are formed because of action of underground,
If needed it is primary block to repair is recycled fluid injection and pressurization with pressure, realize to wearing layer more perfect envelope of extraction borehole leakage path
It is stifled to repair, it can also repeat second as needed or repeatedly block to repair, it is logical that drilling gas leakage can be repeated several times in the method
Road carries out closure reparation, to enhance extraction borehole sealing quality, drilling gas extraction efficiency is improved, also because mucus is in half liquid
Change state, drainage tube is recyclable to be reused, and is reduced costs.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that recovery type hole packer is arranged in wearing layer extraction borehole；
Fig. 2 is recovery type hole packer structural schematic diagram；
Fig. 3 is Fig. 2 mesoporous sealer for mouth structural schematic diagram；
1. thin diameter drainage tube in the figure；2. orifice sealing device；3. country rock；4. sealing of hole repairs mucus section；5. venthole；
6. coal seam；7. wearing a layer extraction borehole；8. liquid injection pipe reality pipeline section and sieve tube segment adjoiner；9. sealing section；10. liquid injection pipe；11. bottom
Plate stone head；12. fluid injection pipe plug, 14. extraction pipe plugs；15. snap ring；16. rope is female；17. the first sealing ring；18. quickly
Joint body；19. gasket；20. threeway；21. waterproof connector ontology；22. fixed jaw；23. clamping head；24. the second sealing ring；
25. Waterproof connector of cable；26. fluid injection valve；27. fast joint of waterpipe.
Specific embodiment
The embodiments of the present invention is illustrated by particular specific embodiment below, those skilled in the art can be by this
Content disclosed by specification understands other advantages and effect of the utility model easily.
Please refer to Fig. 1.Structure, ratio, size depicted in this specification institute attached drawing etc., only to cooperate specification institute
The content of announcement is not intended to limit the utility model enforceable restriction so that those skilled in the art understands and reads
Condition, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size, in not shadow
It rings under the effect of the utility model can be generated and the purpose that can reach, should all still fall in the revealed technology of the utility model
In the range of content can cover.Meanwhile it is cited such as "upper", "lower", "left", "right", " centre " and " one " in this specification
Deng term, be merely convenient to being illustrated for narration, rather than to limit the enforceable range of the utility model, relativeness
It is altered or modified, under the content of no substantial changes in technology, when being also considered as the enforceable scope of the utility model.
As shown in Figure 2 and Figure 3, a kind of low concentration wears 7 recovery type hole packer of layer extraction borehole, including orifice sealing device 2, pumping
Pipe is adopted, the orifice sealing device 2 includes fast joint of waterpipe 27, threeway 20, Waterproof connector of cable 25, fluid injection valve 26, described
20 one end of threeway is connected with the fast joint of waterpipe 27, and 20 other end of threeway is connected with the Waterproof connector of cable 25
It connects, the middle part installation fluid injection valve 26 of the threeway 20 is simultaneously connected with the infusion device of bypass, and the drainage tube includes outer layer
Liquid injection pipe 10 and internal layer thin diameter drainage tube 1, the liquid injection pipe 10 is tightly connected with the fast joint of waterpipe 27, institute
Thin diameter drainage tube 1 is stated to pass through from fast joint of waterpipe 27 and Waterproof connector of cable 25 and connect with Waterproof connector of cable 25
Sealing.
After wearing the solidification of 7 injection hole sealing section 9 of layer extraction borehole, because crustal stress acts on, cause described to wear enclosing for layer extraction borehole 7
Rock 3, sealing section 9, liquid injection pipe 10 formed leakage path, by the fluid injection valve 26 in threeway 20 in the orifice sealing device 2 to
Injection sealing of hole repairs mucus between the liquid injection pipe 10 and thin diameter drainage tube 1, goes out until thin diameter drainage tube 1 returns slurry phenomenon
It is existing, stop fluid injection, close fluid injection valve 26, so that sealing of hole is repaired mucus and inhaled full of 10 screen casing of liquid injection pipe in drilling described in extraction
Sealing of hole below stomata between the liquid injection pipe 10 and thin diameter drainage tube 1 repairs mucus section 4, then by the thin diameter extraction
Pipe 1 accesses underground pressure air, repairs mucus section 4 to sealing of hole by the thin 1 top suction hole of diameter drainage tube and pressurizes, repairs sealing of hole
Multiple mucus enters the extraction borehole leakage path, realizes the closure reparation to the extraction borehole leakage path, can also basis
It needs to recycle and carries out fluid injection with pressure and pressurized operation, realize the closure reparation more perfect to extraction borehole leakage path.
The fast joint of waterpipe 27 includes rope mother 16, snap ring 15, the first sealing ring 17, quick coupling ontology 18, sealing
Pad 19；The rope mother 16 of the fast joint of waterpipe 27, snap ring 15, the first sealing ring 17 are sequentially sleeved on the liquid injection pipe 10, then
Pass through screwed connection with 27 ontology 18 of fast joint of waterpipe；The snap ring 15 collects during tightening screw thread, on the inside of wedge shape
Striped is tied tight the liquid injection pipe 10；The setting of first sealing ring 17 makes it between the quick coupling ontology 18 and threeway 20
The two closely connects.
The Waterproof connector of cable 25 includes waterproof connector ontology 21, the second sealing ring 24, clamping head 23, waterproof connector sheet
Body 21 is equipped with fixed jaw 22, and the thin diameter drainage tube 1 passes through orifice sealing device 2 and extend into the fluid injection for wearing layer extraction borehole 7
In pipe 10；The waterproof connector ontology 21 is tightened with clamping head 23 collects fixed jaw 22, on the waterproof connector ontology 21
Fixed jaw 22 and the second sealing ring 24 are fixed and seal it with thin diameter drainage tube 1.
The thin diameter drainage tube 1 is coaxially disposed with liquid injection pipe 10, and the front end of the two is equipped with several ventholes 5
Sieve tube segment, thin 1 top of diameter drainage tube is equipped with extraction pipe plug 14, is equipped with fluid injection in the sieve tube segment of the liquid injection pipe 10
Pipe plug 12, the fluid injection pipe plug 12 are located at the real pipeline section of thin diameter drainage tube 1 and sieve tube segment adjoiner.
Thin 1 top of diameter drainage tube is more than that the real pipeline section of liquid injection pipe 10 is 1m at a distance from sieve tube segment adjoiner 8.
As shown in Figure 1, the lower section that layer extraction borehole 7 is worn in coal seam is floor rock tunnel 11, the direction of the drilling or from
Lower upward, drainage tube is inserted into drilling from below.A kind of low concentration wears the fluid injection restorative procedure with pressure of layer extraction borehole 7, including
Following steps, after 1. the 7 sealing of hole parallel-connection network extraction of layer extraction borehole is worn in coal seam 6, when liquid injection pipe extraction watt at extraction borehole aperture
When this concentration drops to 5%, starting carries out leakage path to extraction borehole and blocks reparation operation；
2. disconnecting original annotation liquid pipe and extraction pipe network, liquid injection pipe 10 of the original annotation liquid pipe as orifice sealing device 2；
3. the rope mother 16 of the fast joint of waterpipe 27 of orifice sealing device 2, snap ring 15, gasket 19 are sequentially sleeved in liquid injection pipe
The rope mother 16 for tightening fast joint of waterpipe 27 on 10 and quick coupling ontology 18, are fixedly connected with the two with threeway；
4. waterproof connector ontology 21 in orifice sealing device 2 is unscrewed with clamping head 23, thin diameter drainage tube 1 is passed through into cable
Waterproof connector 25 is inserted into liquid injection pipe 10, until real pipeline section and sieve tube segment of thin 1 top of diameter drainage tube beyond liquid injection pipe 10 are adjacent
Place 1m is met, the screw thread of waterproof connector ontology 21 Yu clamping head 23 is tightened；
5. the connection conveying of fluid injection valve 26 in the threeway 20 in orifice sealing device 2 to be repaired to the infusion device of mucus；
6. opening fluid injection valve 26, mucus is repaired to injection sealing of hole with pressure between liquid injection pipe 10 and thin diameter drainage tube 1, until
Thin diameter drainage tube 1 occurs returning slurry phenomenon, stops fluid injection, closes fluid injection valve 26；
7. thin diameter drainage tube 1 is connect with underground pressure air；Underground pressure air control valve is opened, thin diameter drainage tube is passed through
1 top venthole 5 injects pressure wind to extraction borehole, forms sealing of hole and repairs mucus section 4, repairs mucus upper surface to sealing of hole and pressurizes,
It is forced into the country rock 3 for wearing layer extraction borehole 7, sealing section 9, leakage path, closure reparation is carried out to it；
The step 7. in, tape loop pressure injection liquid and pressurization, until carry out fluid injection when, thin diameter drainage tube 1 occurs immediately
Slurry phenomenon is returned, last time pressurized operation is carried out, completes the closure reparation to leakage path.
8. completing after blocking reparation to leakage path, thin diameter drainage tube 1 is connect with extraction pipe network and carries out gas drainage.
When mash gas extraction concentration drops to 5% again to thin diameter drainage tube 1 at extraction borehole aperture, repeat step 2. ~
8. realizing that the repetition to extraction borehole leakage path blocks to repair.
The low concentration is worn on layer extraction borehole fluid injection restorative procedure with pressure and recovery type hole packer through hole sealer for mouth 2
Fluid injection valve 26 repairs mucus to injection sealing of hole between liquid injection pipe 10 and thin diameter drainage tube 1, then by thin 1 top of diameter drainage tube
Suction hole repairs mucus upper surface in sealing of hole and pressurizes, so that sealing of hole is repaired mucus and enter extraction to the injection pressure wind of layer extraction borehole 7 is worn
Because of action of underground after drilling and sealing, the leakage path that 7 country rock 3 of layer extraction borehole, sealing section 9, liquid injection pipe 10 are formed is worn, such as
Primary closure reparation in need is recycled fluid injection and pressurization with pressure, realizes to wearing the more perfect envelope of 7 leakage path of layer extraction borehole
It is stifled to repair, it can also repeat second as needed or repeatedly block to repair, it is logical that drilling gas leakage can be repeated several times in the method
Road carries out closure reparation, to enhance extraction borehole sealing quality, drilling gas extraction efficiency is improved, also because mucus is in half liquid
Change state, drainage tube is recyclable to be reused, and is reduced costs.
The above embodiments are only illustrative of the principle and efficacy of the utility model, and not for limitation, this is practical new
Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model
All equivalent modifications or change completed under mind and technical idea, should be covered by the claim of the utility model.
Claims (5)
1. a kind of low concentration wears a layer extraction borehole recovery type hole packer, including orifice sealing device, drainage tube, it is characterised in that: institute
Stating orifice sealing device includes fast joint of waterpipe, threeway, Waterproof connector of cable, fluid injection valve, described threeway one end and the water
Pipe quick coupling is connected, and the threeway other end is connected with the Waterproof connector of cable, and note is installed at the middle part of the threeway
Fluid valve is simultaneously connected with the infusion device of bypass, and the drainage tube includes the thin diameter extraction of the liquid injection pipe and internal layer of outer layer
Pipe, the liquid injection pipe and the fast joint of waterpipe are tightly connected, and the thin diameter drainage tube is from fast joint of waterpipe and electricity
It passes through in cable waterproof connector and is tightly connected with Waterproof connector of cable.
2. low concentration wears a layer extraction borehole recovery type hole packer according to claim 1, it is characterised in that: the water pipe is quick
Connector includes rope mother, snap ring, the first sealing ring, quick coupling ontology, gasket；The rope mother of the fast joint of waterpipe, snap ring,
First sealing ring is sequentially sleeved on the liquid injection pipe, then passes through screwed connection with fast joint of waterpipe ontology；Tighten screw thread process
Described in snap ring collect, on the inside of wedge-shaped striped tie tight the liquid injection pipe；The gasket is arranged in the quick coupling sheet
The two is completely embedded between body and threeway.
3. low concentration wears a layer extraction borehole recovery type hole packer according to claim 2, it is characterised in that: the cable waterproof
Connector includes waterproof connector ontology, the second sealing ring, clamping head, and waterproof connector ontology is equipped with fixed jaw, and the thin diameter is taken out
Pipe is adopted to extend into the liquid injection pipe for wearing layer extraction borehole across orifice sealing device；The waterproof connector ontology is tightened with clamping head to be made
Fixed jaw collects, and the fixed jaw on the waterproof connector ontology is fixed with the second sealing ring and keeps it close with thin diameter drainage tube
Envelope.
4. low concentration wears a layer extraction borehole recovery type hole packer according to claim 3, it is characterised in that: the thin diameter is taken out
It adopts pipe and liquid injection pipe is coaxially disposed, the front end of the two is equipped with the sieve tube segment with several ventholes, the thin diameter extraction
Tube top end is equipped with extraction pipe plug, and fluid injection pipe plug is equipped in the sieve tube segment of the liquid injection pipe, and the fluid injection pipe plug is located at thin
Diameter drainage tube reality pipeline section and sieve tube segment adjoiner.
5. low concentration wears a layer extraction borehole recovery type hole packer according to claim 4, it is characterised in that: the thin diameter is taken out
Adopt the real pipeline section and sieve tube segment adjoiner 1m that tube top end is more than liquid injection pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822233212.0U CN209568994U (en) | 2018-12-28 | 2018-12-28 | A kind of low concentration wears a layer extraction borehole recovery type hole packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822233212.0U CN209568994U (en) | 2018-12-28 | 2018-12-28 | A kind of low concentration wears a layer extraction borehole recovery type hole packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209568994U true CN209568994U (en) | 2019-11-01 |
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ID=68331095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822233212.0U Expired - Fee Related CN209568994U (en) | 2018-12-28 | 2018-12-28 | A kind of low concentration wears a layer extraction borehole recovery type hole packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209568994U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973047A (en) * | 2018-12-28 | 2019-07-05 | 河南理工大学 | A kind of low concentration wears layer extraction borehole recovery type hole packer and a restorative procedure |
-
2018
- 2018-12-28 CN CN201822233212.0U patent/CN209568994U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973047A (en) * | 2018-12-28 | 2019-07-05 | 河南理工大学 | A kind of low concentration wears layer extraction borehole recovery type hole packer and a restorative procedure |
| CN109973047B (en) * | 2018-12-28 | 2023-11-21 | 河南理工大学 | Low-concentration through-layer extraction drilling recovery type hole packer and repairing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20191101 Termination date: 20211228 |