CN106337668A - A Dynamic Sealing Structure for Gas Extraction and Drilling Device and the Sealing Method - Google Patents
A Dynamic Sealing Structure for Gas Extraction and Drilling Device and the Sealing Method Download PDFInfo
- Publication number
- CN106337668A CN106337668A CN201610956747.3A CN201610956747A CN106337668A CN 106337668 A CN106337668 A CN 106337668A CN 201610956747 A CN201610956747 A CN 201610956747A CN 106337668 A CN106337668 A CN 106337668A
- Authority
- CN
- China
- Prior art keywords
- pipe
- sealing
- gas pumping
- cloth bag
- grouting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 67
- 238000005553 drilling Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000000605 extraction Methods 0.000 title claims abstract description 12
- 238000005086 pumping Methods 0.000 claims abstract description 57
- 239000004744 fabric Substances 0.000 claims abstract description 52
- 239000002002 slurry Substances 0.000 claims abstract description 3
- 239000003566 sealing material Substances 0.000 claims description 29
- 239000003245 coal Substances 0.000 claims description 18
- 238000007569 slipcasting Methods 0.000 claims description 14
- 239000011440 grout Substances 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- 239000004411 aluminium Substances 0.000 claims description 8
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 8
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 8
- 239000000292 calcium oxide Substances 0.000 claims description 8
- 238000004939 coking Methods 0.000 claims description 8
- 229920000058 polyacrylate Polymers 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- 239000002893 slag Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 5
- 239000004606 Fillers/Extenders Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000011121 hardwood Substances 0.000 claims description 3
- 238000005245 sintering Methods 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 abstract 1
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 239000004568 cement Substances 0.000 description 5
- 229920002635 polyurethane Polymers 0.000 description 4
- 239000004814 polyurethane Substances 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 230000037237 body shape Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003828 downregulation Effects 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- MGCQZNBCJBRZDT-UHFFFAOYSA-N midodrine hydrochloride Chemical compound [H+].[Cl-].COC1=CC=C(OC)C(C(O)CNC(=O)CN)=C1 MGCQZNBCJBRZDT-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- -1 poly- ammonia Ester Chemical class 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses dynamic sealing structure for gas extraction and drilling device and the sealing method, which comprises a grouting pipe, a gas pumping pipe, a slurry pipe and a cloth bag set on a gas suction pipe. The cloth bag comprises two water-tight blocking heads and a water-permeable sealing hole between two plugs. The ends of the two plugs are each provided with a gas pumping outlet. The gas pumping pipe passes the cloth bag through gas extraction pipe outlet, which is sealed and connected with the gas extraction pipe. There designs a grouting mouth on the end plug near the tunnel below the gas extraction pipe outlet, and a grouting seal is opened at the bottom of the plugging head of the gas extraction pipe, and one end of the grouting pipe is inserted into the cloth bag through the grouting mouth and passed through the grouting seal. In addition, the present invention provides a dynamic sealing method with a dynamic seal structure. This invention has simple structure, reasonable design, and it's easy to operate, wit low cost and remarkable results. It can effectively block the drill and its peripheral cracks, enhancing gas extraction.
Description
Technical field
The invention belongs at underground coal mine coal-face, stone door punching coal, the mash gas pumping drilling sealing in the place such as coal road
Technical field is and in particular to a kind of dynamic seal structure of mash gas pumping drilling and encapsulating method.
Background technology
Gas Disaster is one of China's coal-mine Major Natural Disasters, has become the main lance of restriction Safety of Coal Mine Production at present
Shield.It is the important means that Gas Disaster is administered in colliery by construction drill draining coal seam gas.In coal mine gas drainage work,
The sealing quality of boring is the key factor of impact extracting result.
Due to holing and the impact such as exploitation, around boring, often there is microfissure, this under the conditions of increased the close of boring
Envelope difficulty.At present, the mash gas pumping drilling encapsulating method that colliery uses mainly has: cement mortar sealing, urethane seal, the former
Sealing needs when around first to block rear and front end using plug, lead to sealing technology numerous and diverse, increase cost, and seal after easily produce
Raw contraction, cement mortar poor permeability, sealing effectiveness is poor；The latter is then often because seal length is inadequate, be difficult to infiltration borehole fissure
And not reaching preferable sealing state, encapsulant has certain toxicity, and price is high, causes to seal high cost, and colliery is difficult to hold
It is subject to.Therefore, in order to solve a sealing difficult problem for mash gas pumping drilling, it is badly in need of seeking brand-new sealing structure and method, meets colliery
Down-hole high-quality borehole sealing requires.
Content of the invention
The technical problem to be solved is for above-mentioned the deficiencies in the prior art, provides a kind of gas pumping to bore
The dynamic seal structure in hole.This dynamic seal structure is simple, and reasonable in design, easy to operate, with low cost, effect is significant is passed through
Setting cloth bag, can avoid using plug, simplify hole-sealing technology, improve work efficiency.Using this dynamic seal structure, Ke Yiyou
Effect closure boring and its circumferential crack, improve gas pumping effect.
For solving above-mentioned technical problem, the technical solution used in the present invention is: a kind of dynamic sealing of mash gas pumping drilling
Structure is it is characterised in that include Grouting Pipe, gas pumping pipe, return pipe and the cloth bag being set on gas pumping pipe, described cloth
Bag includes two fluid-tight plugs and the permeable sealing of hole sections being located between two plugs, and the end of two described plugs is all opened
It is provided with the gas pumping mouth of pipe, described gas pumping Gutron is crossed the gas pumping mouth of pipe and passed through cloth bag, and the gas pumping mouth of pipe and gas are taken out
Adopt the seal of tube to connect, near the end of plug in tunnel and be located at the lower section of the gas pumping mouth of pipe and offer grouting port, insertion is bored
The end of the plug in hole and be located at the lower section of the gas pumping mouth of pipe and offer slip casting sealing, one end of Grouting Pipe is passed through grouting port and is inserted
Enter in cloth bag and passed by slip casting sealing, Grouting Pipe passes the end seal of slip casting sealing, and Grouting Pipe is located within cloth bag
Grout outlet is offered, described grouting port and slip casting sealing are all tightly connected with Grouting Pipe, near the end of the plug in tunnel on tube wall
Portion and be located at the gas pumping mouth of pipe top offer overfall mouth, one end of return pipe is arranged in cloth bag through overfall mouth.
A kind of dynamic seal structure of above-mentioned mash gas pumping drilling is it is characterised in that the material of described plug is impermeable
Water cloth material, the material of sealing of hole sections is permeable cloth.
A kind of dynamic seal structure of above-mentioned mash gas pumping drilling is it is characterised in that between described plug and sealing of hole sections
For being tightly connected.
A kind of dynamic seal structure of above-mentioned mash gas pumping drilling is it is characterised in that described overfall mouth is close with return pipe
Envelope connects.
A kind of dynamic seal structure of above-mentioned mash gas pumping drilling is it is characterised in that the quantity of described grout outlet is many
Individual, multiple grout outlets are uniformly laid.
In addition, present invention also offers a kind of method using above-mentioned dynamic seal structure sealing gas extraction borehole, its
It is characterised by, comprise the following steps:
Step one, drill through mash gas pumping drilling in coal seam, then dynamic seal structure is sent in boring, by Grouting Pipe
It is connected with pulp injection tank by pipeline；
Step 2, using underground pressure air, the sealing material in pulp injection tank is injected in cloth bag by the grout outlet of Grouting Pipe,
Sealing material oozes out entrance borehole fissure by the hole of the sealing of hole sections of cloth bag, and crack around closure boring, with sealing material
Enter crack, in cloth bag, pressure reduces is in negative pressure, and the sealing material in pulp injection tank persistently replenishes in cloth bag, realize to boring and
The dynamic sealing of circumferential crack.
Above-mentioned method is it is characterised in that sealing material described in step 2 sinters slag with coking coal and hardwood sawdust is
Aggregate, aluminium powder and calcium oxide are extender, and polyacrylate is water-retaining agent, the quality of aluminium powder be aggregate quality 0.5%～
0.6%, the quality of calcium oxide is the 0.5%～0.6% of aggregate quality, the quality of polyacrylate be aggregate quality 1%～
3%, the weight/mass percentage composition that in aggregate, coking coal sinters slag is 25%～35%, and the water material mass ratio of described sealing material is
0.5～0.7.
The present invention compared with prior art has the advantage that
1st, present configuration is simple, reasonable in design, easy to operate, with low cost, effect is significant.
2nd, the present invention passes through to arrange cloth bag, can avoid using plug, simplifies hole-sealing technology, improves work efficiency.
3rd, the cloth bag of the present invention includes two fluid-tight plugs and the permeable sealing of hole sections being located between two plugs, note
During slurry, Grouting Pipe is connected with pulp injection tank, is injected sealing material in cloth bag using underground pressure air, sealing material can be from cloth simultaneously
Ooze out entrance borehole fissure, crack around closure boring in the hole of bag sealing of hole sections, enter crack with sealing material, in cloth bag
It is in negative pressure that pressure reduces, and the sealing material in pulp injection tank can be replenished cloth bag under the effect of the pressure again, be circulated with this, thus right
Boring and its circumferential crack realize dynamic sealing.
4th, adopt dynamic seal structure and the method for the present invention, can effectively block boring and its circumferential crack, raising watt
This extracting result.
5th, the sealing material of the present invention can keep paste body shape for a long time, can pass through the hole of cloth bag sealing of hole sections simultaneously
Ooze out entrance borehole fissure, can effectively block boring and its circumferential crack, improve gas pumping effect.
With reference to the accompanying drawings and examples, technical scheme is described in further detail.
Brief description
Fig. 1 is the structural representation of the dynamic seal structure of mash gas pumping drilling of the present invention.
Fig. 2 is the front view of cloth bag of the present invention.
Fig. 3 is the left view of cloth bag of the present invention.
Fig. 4 is the right view of cloth bag of the present invention.
Fig. 5 injects the use state figure of the dynamic seal structure after sealing material for the present invention.
Description of reference numerals:
1- Grouting Pipe；2- grouting port；3- slip casting is sealed；
4- overfall mouth；5- gas pumping pipe；The 6- gas pumping mouth of pipe；
7- cloth bag；7-1- plug；7-2- sealing of hole sections；
8- return pipe；9- pipeline；10- pulp injection tank；
11- grout outlet；12- coal seam.
Specific embodiment
Embodiment 1
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the dynamic seal structure of the mash gas pumping drilling of the present invention, including Grouting Pipe
1st, gas pumping pipe 5, return pipe 8 and the cloth bag 7 being set on gas pumping pipe 5, described cloth bag 7 include two fluid-tight stifled
Head 7-1 and permeable sealing of hole sections 7-2 being located between two plug 7-1, the end of two described plug 7-1 all offers gas
The extraction mouth of pipe 6, described gas pumping pipe 5 passes through cloth bag 7, the gas pumping mouth of pipe 6 and gas pumping pipe by the gas pumping mouth of pipe 6
5 are tightly connected, near tunnel the end of plug 7-1 and be located at the gas pumping mouth of pipe 6 lower section offer grouting port 2, insertion
Boring the end of plug 7-1 and be located at the gas pumping mouth of pipe 6 lower section offer slip casting sealing 3, one end of Grouting Pipe 1 is passed through
Pass in grouting port 2 insertion cloth bag 7 and by slip casting sealing 3, Grouting Pipe 1 passes the end seal of slip casting sealing 3, Grouting Pipe 1
Grout outlet 11 is offered on the tube wall within positioned at cloth bag 7, described grouting port 2 and slip casting sealing 3 are all sealed even with Grouting Pipe 1
Connect, near the end of plug 7-1 in tunnel and be located at the top of the gas pumping mouth of pipe 6 and offer overfall mouth 4, the one of return pipe 8
End is arranged in cloth bag 7 through overfall mouth 4.
In the present embodiment, the material of described plug 7-1 is waterproof cloth, and the material of sealing of hole sections 7-2 is permeable cloth.
In the present embodiment, it is to be tightly connected between described plug 7-1 and sealing of hole sections 7-2.
In the present embodiment, described overfall mouth 4 and return pipe 8 are tightly connected.
In the present embodiment, the quantity of described grout outlet 11 is multiple, and multiple grout outlets 11 are uniformly laid.
The method that the present embodiment adopts above-mentioned dynamic seal structure sealing gas extraction borehole, specifically includes following steps:
Step one, drill through mash gas pumping drilling in coal seam 12, then dynamic seal structure is sent in boring, by slip casting
Pipe 1 is connected with pulp injection tank 10 by pipeline 9；
Step 2, using underground pressure air, the sealing material in pulp injection tank 10 is injected cloth by the grout outlet 11 of Grouting Pipe 1
In bag 7, the hole of sealing of hole sections 7-2 by cloth bag 7 for the sealing material oozes out entrance borehole fissure, blocks crack around boring, with
Sealing material and enter crack, in cloth bag 7, pressure reduces is in negative pressure, and the sealing material in pulp injection tank 10 persistently replenishes cloth bag 7
Interior, realize the dynamic sealing to boring and circumferential crack；Described sealing material sinters slag and hardwood sawdust as aggregate with coking coal,
Aluminium powder and calcium oxide are extender, and polyacrylate (as sodium polyacrylate or polyacrylic acid potassium etc.) is water-retaining agent, the matter of aluminium powder
Measure 0.56% for aggregate quality, the quality of calcium oxide is the 0.56% of aggregate quality, the quality of polyacrylate is aggregate matter
The 2% of amount, the weight/mass percentage composition that in aggregate, coking coal sinters slag is 30%, and the water material mass ratio of sealing material is 0.6 (water material
Mass ratio refers to the mass ratio of water and other raw materials in sealing material).
Embodiment 2
The present embodiment is same as Example 1, and wherein difference is: in sealing material, the quality of aluminium powder is aggregate quality
0.5%, the quality of calcium oxide is the 0.6% of aggregate quality, and the quality of polyacrylate is the 3% of aggregate quality, in aggregate
The weight/mass percentage composition that coking coal sinters slag is 35%, and the water material mass ratio of sealing material is 0.5.
Embodiment 3
The present embodiment is same as Example 1, and wherein difference is: in sealing material, the quality of aluminium powder is aggregate quality
0.6%, the quality of calcium oxide is the 0.5% of aggregate quality, and the quality of polyacrylate is the 1% of aggregate quality, in aggregate
The weight/mass percentage composition that coking coal sinters slag is 25%, and the water material mass ratio of sealing material is 0.7.
Experimental comparison's encapsulating method of the present invention, conventional polyurethanes sealing and conventional expanding cement sealing three under identical conditions
Plant hole sealing technology, the performance parameter of Integrated comparative three finds: using the boring of dynamic seal structure of the present invention and encapsulating method,
Its aperture negative pressure is apparently higher than the boring using conventional polyurethanes sealing and conventional expanding cement sealing.After the negative regulation of aperture
Test its gas scale to find, the drilling gas scale using dynamic seal structure of the present invention and encapsulating method is higher than conventional poly- ammonia
Ester sealing and the boring of conventional expanding cement sealing.Understand dynamic seal structure of the present invention and encapsulating method through commerical test analysis
Compare traditional ordinary sealing techniques effect in terms of borehole sealing obvious: gas pumping 50 days is dynamically close using the present invention afterwards
The average extraction concentration of boring of seal structure and encapsulating method, more than 30%, has preferable stability and persistence.Using this
50 days relative steady concentrations afterwards of bright dynamic seal structure and encapsulating method sealing boring are conventional expanding cement sealing boring
1.2 times, 3.4 times of conventional polyurethanes sealing boring, and, aperture negative pressure and gas scale are also conventional obviously higher than tradition
The boring of technology sealing.
Comprehensive above analysis understands, the effect of dynamic seal structure of the present invention and encapsulating method is close better than conventional expanding cement
The sealing of envelope, better than conventional polyurethanes.
The above, be only presently preferred embodiments of the present invention, and not the present invention is done with any restriction, every according to invention skill
Any simple modification, change and equivalent structure change that art is substantially made to above example, all still fall within the technology of the present invention
In the protection domain of scheme.
Claims (7)
1. a kind of dynamic seal structure of mash gas pumping drilling it is characterised in that include Grouting Pipe (1), gas pumping pipe (5),
Return pipe (8) and the cloth bag (7) being set on gas pumping pipe (5), described cloth bag (7) includes two fluid-tight plug (7-
1) the permeable sealing of hole sections (7-2) and between two plugs (7-1), the end of two described plugs (7-1) all offers
The gas pumping mouth of pipe (6), described gas pumping pipe (5) passes through cloth bag (7), the gas pumping mouth of pipe by the gas pumping mouth of pipe (6)
(6) be tightly connected with gas pumping pipe (5), near tunnel the end of plug (7-1) and be located at the gas pumping mouth of pipe (6) under
Side offers grouting port (2), inserts the end of plug (7-1) of boring and offers positioned at the lower section of the gas pumping mouth of pipe (6)
(3) are sealed in slip casting, and one end of Grouting Pipe (1) is inserted in cloth bag (7) by grouting port (2) and passed by slip casting sealing (3), note
Slurry pipe (1) passes the end seal of slip casting sealing (3), and Grouting Pipe (1) is located at and offers grout outlet on the internal tube wall of cloth bag (7)
(11), described grouting port (2) and slip casting sealing (3) are all tightly connected with Grouting Pipe (1), near the end of the plug (7-1) in tunnel
Portion and be located at the top of the gas pumping mouth of pipe (6) and offer overfall mouth (4), one end of return pipe (8) passes through overfall mouth (4) to arrange
In cloth bag (7).
2. according to a kind of mash gas pumping drilling described in claim 1 dynamic seal structure it is characterised in that described plug
(7-1) material is waterproof cloth, and the material of sealing of hole sections (7-2) is permeable cloth.
3. according to a kind of mash gas pumping drilling described in claim 1 dynamic seal structure it is characterised in that described plug
(7-1) it is to be tightly connected and sealing of hole sections (7-2) between.
4. according to a kind of mash gas pumping drilling described in claim 1 dynamic seal structure it is characterised in that described overfall mouth
(4) it is tightly connected with return pipe (8).
5. according to a kind of mash gas pumping drilling described in claim 1 dynamic seal structure it is characterised in that described grout outlet
(11) quantity is multiple, and multiple grout outlets (11) are uniformly laid.
6. a kind of employing dynamic seal structure sealing gas extraction borehole as described in any claim in claim 1 to 5
Method is it is characterised in that comprise the following steps:
Step one, in coal seam (12), drill through mash gas pumping drilling, then dynamic seal structure is sent in boring, by Grouting Pipe
(1) it is connected with pulp injection tank (10) by pipeline (9)；
Step 2, grout outlet (11) injection by Grouting Pipe (1) by the sealing material in pulp injection tank (10) using underground pressure air
In cloth bag (7), sealing material oozes out entrance borehole fissure by the hole of the sealing of hole sections (7-2) of cloth bag (7), around closure boring
Crack, enters crack with sealing material, and it is in negative pressure that the interior pressure of cloth bag (7) reduces, and the sealing material in pulp injection tank (10) continues
Replenish in cloth bag (7), realize the dynamic sealing to boring and circumferential crack.
7. in accordance with the method for claim 6 it is characterised in that sealing material described in step 2 with coking coal sintering slag and
Hardwood sawdust is aggregate, and aluminium powder and calcium oxide are extender, and polyacrylate is water-retaining agent, and the quality of aluminium powder is aggregate quality
0.5%～0.6%, the quality of calcium oxide is the 0.5%～0.6% of aggregate quality, and the quality of polyacrylate is aggregate quality
1%～3%, in aggregate coking coal sinter slag weight/mass percentage composition be 25%～35%, the water material matter of described sealing material
Amount ratio is 0.5～0.7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610956747.3A CN106337668A (en) | 2016-10-26 | 2016-10-26 | A Dynamic Sealing Structure for Gas Extraction and Drilling Device and the Sealing Method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610956747.3A CN106337668A (en) | 2016-10-26 | 2016-10-26 | A Dynamic Sealing Structure for Gas Extraction and Drilling Device and the Sealing Method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106337668A true CN106337668A (en) | 2017-01-18 |
Family
ID=57840838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610956747.3A Pending CN106337668A (en) | 2016-10-26 | 2016-10-26 | A Dynamic Sealing Structure for Gas Extraction and Drilling Device and the Sealing Method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106337668A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676055A (en) * | 2017-11-23 | 2018-02-09 | 山东科技大学 | A kind of mash gas pumping drilling method for blocking using S-shaped structural traps bayonet socket |
| CN110424948A (en) * | 2019-08-01 | 2019-11-08 | 重庆市能源投资集团科技有限责任公司 | Evaluation method suitable for the detection of coal mine gas extraction borehole sealing quality |
| CN110847850A (en) * | 2019-10-22 | 2020-02-28 | 冀中能源峰峰集团有限公司 | Underground high-pressure-bearing large-flow out-of-control hydrological drilling plugging system and method |
| CN112554839A (en) * | 2020-11-11 | 2021-03-26 | 淮阴工学院 | Integral hose non-plug-in type gas hole packer and hole packing method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4440226A (en) * | 1982-12-08 | 1984-04-03 | Suman Jr George O | Well completion method |
| CN102913184A (en) * | 2012-10-26 | 2013-02-06 | 河南理工大学 | Secondary composite high-pressure grouting and sealing process of gas drainage drilling artificial separation barrier |
| CN103075127A (en) * | 2012-12-27 | 2013-05-01 | 中国矿业大学 | Device and method for sealing drill hole by flexible filling material |
| CN103590782A (en) * | 2013-11-28 | 2014-02-19 | 华北科技学院 | Under-pressure grouting hole sealing device and method for gas extraction drill air bag blocking |
| CN104343415A (en) * | 2014-10-20 | 2015-02-11 | 中煤科工集团重庆研究院有限公司 | Gas extraction drilling and expanding type bag hole packer |
| CN205577925U (en) * | 2016-04-29 | 2016-09-14 | 史买林 | A layer drilling hole sealing device is worn in gas stifled and middle water seal in two for coal mine |
| CN206111135U (en) * | 2016-10-26 | 2017-04-19 | 西安科技大学 | Dynamic sealing structure of gas drainage drilling |
-
2016
- 2016-10-26 CN CN201610956747.3A patent/CN106337668A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4440226A (en) * | 1982-12-08 | 1984-04-03 | Suman Jr George O | Well completion method |
| CN102913184A (en) * | 2012-10-26 | 2013-02-06 | 河南理工大学 | Secondary composite high-pressure grouting and sealing process of gas drainage drilling artificial separation barrier |
| CN103075127A (en) * | 2012-12-27 | 2013-05-01 | 中国矿业大学 | Device and method for sealing drill hole by flexible filling material |
| CN103590782A (en) * | 2013-11-28 | 2014-02-19 | 华北科技学院 | Under-pressure grouting hole sealing device and method for gas extraction drill air bag blocking |
| CN104343415A (en) * | 2014-10-20 | 2015-02-11 | 中煤科工集团重庆研究院有限公司 | Gas extraction drilling and expanding type bag hole packer |
| CN205577925U (en) * | 2016-04-29 | 2016-09-14 | 史买林 | A layer drilling hole sealing device is worn in gas stifled and middle water seal in two for coal mine |
| CN206111135U (en) * | 2016-10-26 | 2017-04-19 | 西安科技大学 | Dynamic sealing structure of gas drainage drilling |
Non-Patent Citations (1)
| Title |
|---|
| 黄声树主编: "《煤矿瓦斯治理适用新技术》", 31 October 2008, 徐州：中国矿业大学出版社 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676055A (en) * | 2017-11-23 | 2018-02-09 | 山东科技大学 | A kind of mash gas pumping drilling method for blocking using S-shaped structural traps bayonet socket |
| CN110424948A (en) * | 2019-08-01 | 2019-11-08 | 重庆市能源投资集团科技有限责任公司 | Evaluation method suitable for the detection of coal mine gas extraction borehole sealing quality |
| CN110424948B (en) * | 2019-08-01 | 2023-03-31 | 重庆市能源投资集团科技有限责任公司 | Evaluation method suitable for detecting hole sealing quality of underground coal mine gas extraction drill hole |
| CN110847850A (en) * | 2019-10-22 | 2020-02-28 | 冀中能源峰峰集团有限公司 | Underground high-pressure-bearing large-flow out-of-control hydrological drilling plugging system and method |
| CN110847850B (en) * | 2019-10-22 | 2022-03-25 | 冀中能源峰峰集团有限公司 | Underground high-pressure-bearing large-flow out-of-control hydrological drilling plugging system and method |
| CN112554839A (en) * | 2020-11-11 | 2021-03-26 | 淮阴工学院 | Integral hose non-plug-in type gas hole packer and hole packing method thereof |
| CN112554839B (en) * | 2020-11-11 | 2024-06-11 | 淮阴工学院 | Integral hose plug-in-free gas hole packer and hole sealing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207131371U (en) | Coal mine gas drainage holes controllable capsule bag type hole-sealing device with pressure | |
| CN106337668A (en) | A Dynamic Sealing Structure for Gas Extraction and Drilling Device and the Sealing Method | |
| CN104747075B (en) | Anti-collapsing drilling method for grout spraying of soft coal seam | |
| CN102942006B (en) | The method of sequestration of carbon dioxide | |
| CN105114030B (en) | A kind of non-condensable constant pressure slurries method for sealing of mash gas pumping drilling | |
| CN108894727A (en) | The water-retaining method of ground level directional drilling slip casting closure overlying strata water producing fractures main channel | |
| CN203430473U (en) | Underground hydraulic fracturing drill hole sealing device of coal mine | |
| CN102444118A (en) | Construction method for grouting reinforcement of sleeve valve pipe | |
| CN102977869B (en) | Underground high-pressure hydraulic fracturing hole sealing material for coal mine and hole sealing technology | |
| CN104481540A (en) | Method for controlling multiple coal mining hazards by high level borehole grouting | |
| CN102628345A (en) | Sealing method of high sealing quasi-horizontal drilling hole | |
| CN104314508A (en) | Hole sealing method for coal bed gas drainage drill hole | |
| CN102587859A (en) | Technology for blocking mine water bursting through backflow grouting | |
| CN108104865B (en) | A kind of concordant drilling Anti-air-leakage gas pumping method | |
| CN108797621A (en) | A kind of water sealing structure and its construction method in rich water depth ovum gravel erratic boulder stratum front pre-grouting | |
| CN108166535A (en) | A kind of construction method of bellows leak stopping | |
| CN207863920U (en) | Multistage pressure-bearing type osmosis type hole sealing device | |
| CN204571912U (en) | Water filling hole sealing device | |
| CN107191188A (en) | The bad water-bearing layer positioning targeting slip casting Mine Shaft Lining of rock section, constructing device and method | |
| CN207048813U (en) | Sealing and leakage plugging device for gas pumping | |
| CN204677155U (en) | A kind of down-hole coal bed high strength rapid drilling hole sealing device | |
| CN206111135U (en) | Dynamic sealing structure of gas drainage drilling | |
| CN103742098B (en) | A kind of colliery Di Chou lane layer-through drilling return slag hole sealing device and method | |
| CN207377561U (en) | The bad water-bearing layer positioning targeting slip casting Mine Shaft Lining of rock section and constructing device | |
| CN105317397A (en) | Double cloth bags type grouting sealing set and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170118 |
|
| RJ01 | Rejection of invention patent application after publication |