CN207048724U - High-pressure plaster-spraying implement is segmented in a kind of coal bed gas well sleeve pipe - Google Patents
High-pressure plaster-spraying implement is segmented in a kind of coal bed gas well sleeve pipe Download PDFInfo
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- CN207048724U CN207048724U CN201720871947.9U CN201720871947U CN207048724U CN 207048724 U CN207048724 U CN 207048724U CN 201720871947 U CN201720871947 U CN 201720871947U CN 207048724 U CN207048724 U CN 207048724U
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- Prior art keywords
- sleeve pipe
- screw thread
- coal bed
- bed gas
- gas well
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- 239000003245 coal Substances 0.000 title claims abstract description 19
- 238000005507 spraying Methods 0.000 title claims abstract description 12
- 238000007582 slurry-cast process Methods 0.000 claims abstract description 27
- 238000007569 slipcasting Methods 0.000 claims abstract description 26
- 238000005553 drilling Methods 0.000 claims abstract description 17
- 239000003292 glue Substances 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 4
- 229920002472 Starch Polymers 0.000 claims description 2
- 235000019698 starch Nutrition 0.000 claims description 2
- 239000011435 rock Substances 0.000 abstract description 3
- 239000002002 slurry Substances 0.000 description 7
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Nozzles (AREA)
Abstract
The utility model belongs to a layer gas resource exploitation technical field, in order to realize sleeve pipe and well wall clearance grouting are carried out in the region that drilling well is specified or section, the utility model provides in a kind of coal bed gas well sleeve pipe and is segmented high-pressure plaster-spraying implement, including body, the body is three-segment integral structure, the middle part of body is the floral tube for being provided with some slip casting grooves, the upper and lower part of body is respectively screw thread, on, stop grouting plug combination is separately installed with the screw thread of bottom, on, segment between the stop grouting plug combination of bottom is slip casting section, wherein, top stop grouting plug combination can move up and down along slurry casting machine top screw thread；The top of the top slurry casting machine top screw thread is provided with the latching connector for the drilling rod that is connected, Grouting Pipe.The high-pressure slip-casting of variable section length in specified drilling well inner section or position, can be realized using the present apparatus, Sidewall Surrounding Rock outside the sleeve pipe of designated area is reinforced, sleeve pipe is closely connected with the borehole wall, greatly strengthen the stability of coal bed gas well.
Description
Technical field
The utility model belongs to a layer gas resource exploitation technical field, and in particular to a kind of borehole wall for coal bed gas well is reinforced
High-pressure plaster-spraying implement is segmented in the coal bed gas well sleeve pipe of mortar depositing construction.
Background technology
The drilling well of coal bed gas ground construction need to use casing cementing, and when particularly passing through goaf, sleeve pipe is difficult with drilling well country rock
Realize closely connected, have impact on the long-time stability of pipe well.This just needs to carry out grouting and reinforcing, note at this stage between sleeve pipe and the borehole wall
Paste-making method is from hole-bottom slurry-injection, but because of the presence in goaf, it is impossible to realizes and returns to predetermined altitude on slip casting liquid.Therefore, if energy
Take method and improve grouting device, realize the region specified in drilling well or section, carry out sleeve pipe and well wall clearance grouting, then greatly
It is big to improve slip casting efficiency and effect.
The content of the invention
In order to realize sleeve pipe and well wall clearance grouting, Jincheng, Shanxi anthracite mine are carried out in the region that drilling well is specified or section
Co., Ltd of industry group coal specially have developed in a kind of coal bed gas well sleeve pipe with coal bed gas Gong Cai National Key Laboratories to be divided
Section high-pressure plaster-spraying implement.
The utility model adopts the following technical scheme that：
High-pressure plaster-spraying implement, including body are segmented in a kind of coal bed gas well sleeve pipe, the body is three-segment integral structure, pipe
The middle part of body is the floral tube for being provided with some slip casting grooves, and the upper and lower part of body is respectively screw thread, is distinguished at the screw thread of upper and lower part
Stop grouting plug combination is installed, the segment between the combination of upper and lower part stop grouting plug is slip casting section, wherein, the combination of top stop grouting plug can
Moved up and down along slurry casting machine top screw thread；The top of the top slurry casting machine top screw thread be provided with for be connected drilling rod,
The latching connector of Grouting Pipe.
The stop grouting plug combination includes grip bolt, rubber seal and Elastic flexible glue ring, and grip bolt coordinates with screw thread
Connection, rubber seal and Elastic flexible glue ring are parallel to each other, are coaxially close to be socketed between grip bolt and sleeve pipe, are formed double-deck
Structure is only starched in sealing.
The rubber seal is on the outside of Elastic flexible glue ring.Combined for the stop grouting plug on top, Elastic flexible glue ring peace
Loaded on rubber seal lower section, and being combined for the stop grouting plug of bottom, Elastic flexible glue ring is installed on above rubber seal, because
This, inner side is that relative injection slurry describes, and the first layer that Elastic flexible glue ring is formed with injection slurry directly contacts seals, rubber seal
Form second layer sealing.
The length of the slip casting section is 0.5-1m.
The slip casting groove is the rectangle notch of parallel tubes axis direction, is set along body axis direction and is no less than three
Layer, every layer is no less than 3 notches, and the notch of adjacent layer shifts to install.Ensure that pulp is uniform in the slip casting section.
The utility model mainly solves following technical problem：
（a）Realize that segmentation carries out sleeve pipe and well wall clearance grouting in sleeve pipe, and slip casting segment length may be selected；
（b）Double-deck grouting stop-valve is set, realizes high pressure slip casting；
（c）Separate high pressure Grouting Pipe is set, common exploration drilling rod can be used to be connected with slurry casting machine, simplify slip casting equipment.
Therefore, grouting and reinforcing outside the sleeve pipe of coal bed gas well is carried out using the present apparatus, can in specified drilling well inner section or
Position, the high-pressure slip-casting of variable section length is realized, Sidewall Surrounding Rock outside the sleeve pipe of designated area is reinforced, sleeve pipe and the borehole wall
It is closely connected, it greatly strengthen the stability of coal bed gas well.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
In figure：1. drilling rod；2. Grouting Pipe；3. sleeve pipe；4. latching connector；5. slurry casting machine top screw thread；6. grip bolt；7. rubber
Glue sealing ring；8. Elastic flexible glue ring；9. slip casting groove；10. slurry casting machine bottom screw thread；11. body.
Embodiment
With reference to accompanying drawing, specific embodiment of the present utility model is described further：
High-pressure plaster-spraying implement is segmented in coal bed gas well sleeve pipe as shown in Figure 1, its body 11 divides upper, middle and lower three parts, and top is
Length 0.1-0.5m slurry casting machine top screw thread 5, middle part are the floral tube part, length 0.5m or so for being provided with 3 pairs of slip casting grooves 9, under
Portion is the slurry casting machine bottom screw thread 10 of 0.2m length.It is respectively mounted only at slurry casting machine top screw thread 5 and slurry casting machine bottom screw thread 10
Slurry plug combination（Including three grip bolts 6, rubber seal 7 and Elastic flexible glue ring 8）.Top stop grouting plug combination can be along slurry casting machine
Top screw thread 5 moves, and so as to realize, segmentation carries out sleeve pipe and well wall clearance grouting in sleeve pipe, and slip casting segment length may be selected, and one
As select length range 0.5-1.0m.Rubber seal 7 and Elastic flexible glue ring 8 are set in stop grouting plug combination, possess double-deck only slurry
Effect, under grouting pressure effect, Elastic flexible glue ring 8 is squeezed closely connected with sleeve pipe, significantly improves and only starches performance, realizes
High pressure slip casting.
Special latching connector 4 can be with jointed rod 1, Grouting Pipe 2 and slurry casting machine top screw thread 5, and common survey may be selected in drilling rod
Prospecting bit bar, Grouting Pipe use high-pressure slip-casting pipe, improve the flexibility of equipment and materials selection, reduce cost.
The process for using of the utility model device is as follows：
（1）The slurry casting machine body 11 of suitable diameter is selected, gets out respective accessory, including drilling rod 1, Grouting Pipe 2, latching connector
4th, grip bolt 6, rubber seal 7, Elastic flexible glue ring 8 etc..
（2）The stop grouting plug of bottom is combined（Including three grip bolts 6, rubber seal 7 and Elastic flexible glue ring 8）Successively
It is screwed on slurry casting machine bottom screw thread 10.
（3）The stop grouting plug on top is combined（Including three grip bolts 6, rubber seal 7 and Elastic flexible glue ring 8）Successively
It is screwed on slurry casting machine top screw thread 5, and adjusts the length of slip casting section as needed, stop grouting plug combination is parked in some fixed bit
Put.
（4）By first segment drilling rod 1 and corresponding Grouting Pipe 2 and the screwed connection of latching connector 4, and slurry casting machine is lifted by crane and is sent into set
In pipe 3.
（5）As stated above, continued drilling rod 1 and Grouting Pipe 2 successively, and the position of slip casting is needed in through sleeve pipe.
（6）In collar piping mouth, from the high pressure injected clear water of Grouting Pipe 2, water under high pressure enters in slurry casting machine, and extruding elasticity is soft
Rubber ring 8, make it closely connected with tube wall, while the injected hole on sleeve pipe 3 is broken.
（7）In ground well head, deployed injection slurry, slurries are injected from Grouting Pipe high pressure, slurries are pressed into from the injected hole of sleeve pipe 3
Sleeve pipe is with borehole wall space, realizing segmenting slip casting reinforcing.
（8）Reach slip casting requirement, timely hoisting grouting device to the mouth of pipe, rinse slurry casting machine.
The connection main points and relation of the device are as follows：
Drilling rod 1 and Grouting Pipe are connected by latching connector 4, and latching connector 4 is connected with top slurry casting machine screw thread 5.Slurry casting machine top
Stop grouting plug combination include grip bolt 6（3）, rubber seal 7 and Elastic flexible glue ring 8, there is inner ring, inner sleeve spiral shell in inner ring
Line, slurry casting machine upper one end is passed sequentially through, screwed along slurry casting machine top screw thread to fixed position.Rubber seal 7 and elasticity
The clamped bolt 6 of flexible glue ring 8 clamps.Equally, the stop grouting plug combination of slurry casting machine bottom includes grip bolt 6（3）, rubber it is close
Seal 7 and Elastic flexible glue ring 8, have an inner ring, interior external threading in inner ring, pass sequentially through slurry casting machine bottom screw thread 10, screw to solid
Positioning is put.Rubber seal 7 and Elastic flexible glue ring 8 are clamped by three grip bolts 6.Upper and lower stop grouting plug combination is close with sleeve pipe 3
Patch.
Claims (5)
1. it is segmented high-pressure plaster-spraying implement, including body in a kind of coal bed gas well sleeve pipe（11）, it is characterised in that：The body（11）For
Three-segment integral structure, body（11）Middle part to be provided with some slip casting grooves（9）Floral tube, body（11）Upper and lower part point
Not Wei screw thread, stop grouting plug combination is separately installed with the screw thread of upper and lower part, the segment between the combination of upper and lower part stop grouting plug is note
Section is starched, wherein, stop grouting plug combination in top can move up and down along slurry casting machine top screw thread；The top of the top slurry casting machine top screw thread
End is provided with for the drilling rod that is connected（1）, Grouting Pipe（2）Latching connector（4）.
2. it is segmented high-pressure plaster-spraying implement in coal bed gas well sleeve pipe according to claim 1, it is characterised in that：The stop grouting plug group
Conjunction includes grip bolt（6）, rubber seal（7）With Elastic flexible glue ring（8）, grip bolt（6）It is connected with screw thread, rubber
Sealing ring（7）With Elastic flexible glue ring（8）It is parallel to each other, is coaxially close to be socketed on grip bolt（6）With sleeve pipe（3）Between, formed
Double-layer seal only starches structure.
3. according to being segmented high-pressure plaster-spraying implement in the coal bed gas well sleeve pipe described in claim 2, it is characterised in that：The rubber seal
（7）Located at Elastic flexible glue ring（8）Outside.
4. it is segmented high-pressure plaster-spraying implement in coal bed gas well sleeve pipe according to claim 3, it is characterised in that：The slip casting section
Length is 0.5-1m.
5. it is segmented high-pressure plaster-spraying implement in coal bed gas well sleeve pipe according to claim 4, it is characterised in that：The slip casting groove
（9）For parallel tubes（11）The rectangle notch of axis direction, along body（11）Axis direction, which is set, is no less than three layers, and every layer is not
Less than 3 notches, the notch of adjacent layer shift to install.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720871947.9U CN207048724U (en) | 2017-07-18 | 2017-07-18 | High-pressure plaster-spraying implement is segmented in a kind of coal bed gas well sleeve pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720871947.9U CN207048724U (en) | 2017-07-18 | 2017-07-18 | High-pressure plaster-spraying implement is segmented in a kind of coal bed gas well sleeve pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207048724U true CN207048724U (en) | 2018-02-27 |
Family
ID=61496549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720871947.9U Active CN207048724U (en) | 2017-07-18 | 2017-07-18 | High-pressure plaster-spraying implement is segmented in a kind of coal bed gas well sleeve pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207048724U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108708768A (en) * | 2018-06-04 | 2018-10-26 | 徐州中国矿大岩土工程新技术发展有限公司 | Slip casting tube head, grouting device and its construction method |
| CN108756945A (en) * | 2018-06-04 | 2018-11-06 | 徐州中国矿大岩土工程新技术发展有限公司 | The device and construction method administered for multilayer goaf grouting |
| CN110644469A (en) * | 2019-10-31 | 2020-01-03 | 中铁二院工程集团有限责任公司 | Sectional grouting device and grouting method for steel perforated pipe grouting |
-
2017
- 2017-07-18 CN CN201720871947.9U patent/CN207048724U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108708768A (en) * | 2018-06-04 | 2018-10-26 | 徐州中国矿大岩土工程新技术发展有限公司 | Slip casting tube head, grouting device and its construction method |
| CN108756945A (en) * | 2018-06-04 | 2018-11-06 | 徐州中国矿大岩土工程新技术发展有限公司 | The device and construction method administered for multilayer goaf grouting |
| CN110644469A (en) * | 2019-10-31 | 2020-01-03 | 中铁二院工程集团有限责任公司 | Sectional grouting device and grouting method for steel perforated pipe grouting |
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