CN107035325A - A kind of coal mine gas extraction borehole binary channels reverse circulation aqueous vapor pigtail - Google Patents
A kind of coal mine gas extraction borehole binary channels reverse circulation aqueous vapor pigtail Download PDFInfo
- Publication number
- CN107035325A CN107035325A CN201710404045.9A CN201710404045A CN107035325A CN 107035325 A CN107035325 A CN 107035325A CN 201710404045 A CN201710404045 A CN 201710404045A CN 107035325 A CN107035325 A CN 107035325A
- Authority
- CN
- China
- Prior art keywords
- seal box
- outer tube
- tube pipe
- pipe axle
- guiding
- 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
- 239000003245 coal Substances 0.000 title claims abstract description 24
- 238000000605 extraction Methods 0.000 title claims abstract description 15
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005553 drilling Methods 0.000 description 29
- 238000007789 sealing Methods 0.000 description 8
- 238000005520 cutting process Methods 0.000 description 4
- 238000009991 scouring Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001556 precipitation Methods 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/02—Swivel joints in hose-lines
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of coal mine gas extraction borehole binary channels reverse circulation aqueous vapor pigtail, including outer tube pipe axle（1）, inner tube assembly（3）, guiding seal box（11）Seal box is considered to be worth doing with gang drill（17）, said inner tube assembly（3）It is plugged into outer tube pipe axle（1）It is interior to constitute rotatable double-decker；The outer tube pipe axle（1）, the guiding seal box（11）, gang drill bits seal box（17）By screwed connection together；The guiding seal box（11）On be provided with snap joint（10）.It is small volume of the present invention, lightweight, rotate flexible, correcting effect is good, bearing operation is steady, can meet and rotate at a high speed, good seal performance, circulation No leakage, stable work in work, handling Portable power saving.
Description
Technical field
The present invention relates to a kind of coal mine gas extraction borehole binary channels reverse circulation aqueous vapor pigtail, it is adaptable to underground coal mine
Soft or hard compound seam mash gas pumping drilling deep well drilling.
Background technology
Coal mine gas extraction borehole binary channels reverse circulation aqueous vapor pigtail, for connecting high-pressure rubber pipe and support deslagging
Pipe, is rig rotary tools and the not connection member between rotary part, and the need of rotation and high pressure sealing at a high speed need to be met simultaneously
Will, it is the outfitting tool of reverse circulation drilling.At present, the soft or hard compound seam mash gas pumping drilling drilling process of underground coal mine, be
Crept into using direct circulation, the aqueous vapor pigtail used is the single channel that can only send into scouring media in hole, and drilling cuttings is in drilling rod and hole
Annular space is discharged between wall.Because soft or hard complex coal stability is poor, gas bearing capacity is high.Increase with drilling depth, precipitation drilling cuttings increases, and makes
The gas drainage discharged in coal seam is not smooth, gathers generation pressure, causes hole wall collapse, plug-hole, the string accident such as hole and stick of tool.
Existing reacting cycle aqueous vapor pigtail possession matter drilling field, institute's drilling is upright opening, and reacting cycle aqueous vapor pigtail is to rely on
Mechanical elevating.Underground coal mine binary channels reverse circulation aqueous vapor pigtail is mounted on the drilling rod head of drill power head clamping simultaneously vacantly,
Artificial handling, weight is big, endangers big to drilling rod, labor intensity is big；Underground coal mine tunnel is narrow, when length is big, no escape way；
Now with drilling cramp after drill power head provided with supporting drilling rod fixed block, when diameter is big, aqueous vapor pigtail can not pass through.Therefore existingly
The reacting cycle aqueous vapor pigtail of matter probing, its length, weight, diameter, structure etc. are not suitable for underground coal mine operating mode.
Therefore those skilled in the art are directed to developing a kind of coal mine gas extraction borehole binary channels circulation aqueous vapor pigtail,
Geological drilling reacting cycle aqueous vapor pigtail weight can effectively be solved big, the problem of diameter, length, structure are not suitable for coal mine down-hole drilling,
The occurrence probability of the accidents such as reduction direct circulation drilling middle hole wall is caved in, plug-hole, string hole, stick of tool, greatly improves coal mine gas
The efficiency of extraction.
The content of the invention
In view of the drawbacks described above of prior art, the technical problems to be solved by the invention are to provide a kind of underground coal mine watt
This extraction borehole binary channels circulates aqueous vapor pigtail, can effectively solve geological drilling reacting cycle aqueous vapor pigtail weight greatly, diameter, length, knot
The problem of structure is not suitable for coal mine down-hole drilling, reduction direct circulation drilling middle hole wall is caved in, plug-hole, string hole, the hair of the accident such as stick of tool
Raw probability, greatly improves the efficiency of coal mine gas extraction.
To achieve the above object, the invention provides a kind of coal mine gas extraction borehole binary channels reverse circulation aqueous vapor
Pigtail, including outer tube pipe axle, inner tube assembly, guiding seal box and gang drill bits seal box, said inner tube assembly are plugged into outer tube pipe axle
It is interior to constitute rotatable double-decker.The outer tube pipe axle, the guiding seal box, gang drill bits seal box are connected by screw thread
It is connected together.Snap joint is provided with the guiding seal box.
Said inner tube assembly is plugged into the outer tube pipe axle, forms interior annulus access.It is provided with the outer tube pipe axle
Several outer axial tube guide holes.The guiding seal box drive end bearing bracket is by screwed connection on the outer tube pipe axle.The guiding sealing
Box afterbody is connected with gang drill bits seal box shell by anti-silk seal box locknut with seal box preventing covering upside down locknut.It is described quick
Joint is arranged in the middle part of the guiding seal box, and its inner passage connects the outer tube pipe axle and is always shaped as inner ring with said inner tube
It is empty.The gang drill bits seal box is connected to the outer tube pipe axle afterbody.It is interior that the outer tube pipe axle and said inner tube are always shaped as
Annular space is the circulation passage of scouring media, and the snap joint is connected with deslagging sebific duct, constitutes and bores with said inner tube central passage
Bits return out passage.
The guiding seal box forward end is provided with lower section in circlip, the guiding seal box drive end bearing bracket and is provided with
Felt oil seal, top is provided with dust-proof O-ring seal.The guiding seal box drive end bearing bracket rear is provided with preceding deep groove ball bearing.
It is provided with space between the guiding seal box rear end and the outer tube pipe axle in rear deep groove ball bearing, rear deep groove ball bearing
Ring is fixed on the outer tube pipe axle by anti-silk bearing locking nut.By certain intervals, 2 deep groove ball bearings, correcting effect are set
It is good so that the axle of outer tube pipe described in drilling process will not swing or shake, it is ensured that working stability.Before and after the snap joint
Both sides are provided with into medium O-ring seal.The outer tube pipe axle front end is provided with clamp pilot trench.The outer tube pipe axle afterbody and institute
State between gang drill considers seal box to be worth doing and be provided with gang drill bits O-ring seal.The sealing ring is high pressure resistant, high-temperature seal ring, it is ensured that
The sealing property of aqueous vapor pigtail.
The beneficial effects of the invention are as follows：It is small volume of the present invention, lightweight, rotate flexible, circulate No leakage, service behaviour is steady
It is fixed, Portable power saving is loaded and unloaded, with following major advantage：1st, it is provided with high pressure resistant, high temperature in the main import and export of each medium
Sealing ring, whole device good seal performance；2nd, the big deep groove ball bearing of spacing is provided with outer tube pipe axle, correcting effect is good,
Bearing operation is steady, can meet and rotate at a high speed, working stability；3 reduce the abrasion of group slagging channel；4th, simple in construction, rapid wear
Part is few, dismounting maintenance is easy, is adapted to artificial handling.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the invention.
Fig. 2 is the structural representation for the double-decker that outer tube pipe axle of the present invention is constituted with said inner tube assembly.
Fig. 3 is internal structure schematic diagram of the present invention.
Fig. 4 is the profile of snap joint of the present invention.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples：
As shown in Figures 1 to 4, a kind of coal mine gas extraction borehole binary channels reverse circulation aqueous vapor pigtail, including outer tube pipe axle
1st, inner tube assembly 3, guiding seal box 11 and gang drill bits seal box 17, it is rotatable that inner tube assembly 3 is plugged into composition in outer tube pipe axle 1
Double-decker；Outer tube pipe axle 1, guiding seal box 11, gang drill consider to be worth doing seal box 17 by screwed connection together；Guide seal box
Snap joint 10 is provided with 11.
Inner tube assembly 3 is plugged into the axle of outer tube pipe 1, forms interior annulus access；Several outer axial tubes are provided with outer tube pipe axle 3
Guide hole；Guiding seal box drive end bearing bracket 7 is by screwed connection on outer tube pipe axle 1；Guide the afterbody of seal box 11 and consider sealing to be worth doing with gang drill
The shell of box 17 is connected by anti-silk seal box locknut 14 with seal box preventing covering upside down locknut 13；Snap joint 10 is arranged at guiding sealing
The middle part of box 11, its inner passage connection outer tube pipe axle 1 and the interior annular space of the formation of inner tube assembly 3；Gang drill bits seal box 17 is connected to
The afterbody of outer tube pipe axle 1.
The guiding forward end of seal box 11 is provided with lower section in circlip 4, guiding seal box drive end bearing bracket 7 and is provided with felt
Oil sealing 5, top is provided with dust-proof O-ring seal 6；Deep groove ball bearing 8 before the rear of guiding seal box drive end bearing bracket 7 is provided with；Guiding
Be provided with rear deep groove ball bearing 12 in space between the rear end of seal box 11 and outer tube pipe axle 1, the rear inner ring of deep groove ball bearing 12 by
Anti- silk bearing locking nut 15 is fixed on outer tube pipe axle 1；2 deep groove ball bearings are set by a determining deviation so that aqueous vapor pigtail outer tube
Pipe axle 1, inner tube assembly 3 are rotated with drilling tool, and shell body, scum pipe are not rotated, while the structure of front and rear twice deep groove ball bearing is set
Meter can also stable rotation, outer tube pipe axle 1 is not swung or is shaken.
The front and rear sides of snap joint 10 are provided with into medium O-ring seal 9.The afterbody of outer tube pipe axle 1 considers seal box to be worth doing with gang drill
Gang drill bits O-ring seal 16 is provided between 17.Dust-proof O-ring seal 6, enter medium O-ring seal 9, gang drill bits O-ring seal
16 be high pressure resistant, high-temperature seal ring, high temperature, the working environment of high pressure during meeting the work of aqueous vapor pigtail.The front end of outer tube pipe axle 1 is set
It is equipped with clamp pilot trench 2.
Operation principle, during drilling, outer tube pipe axle 1 is with inner tube assembly 3 with drilling tool high-speed rotation, and main road scouring media is in outer tube
Flowed in interior annulus access between pipe axle 1 and inner tube assembly 3, outer annulus access of the bypass scouring media between drilling rod and hole wall
Interior flowing, central passage and the snap joint 10 and supporting deslagging sebific duct of inner tube assembly 3 collectively form rushing of being returned in high speed
The passing away that medium carries drilling cuttings is washed, the medium flow pattern singly gone out is entered in formation pair, and drilling cuttings is discharged in drilling rod, can be effectively
Reduce the generation of the accidents such as hole wall collapse, plug-hole, string hole, stick of tool.
Preferred embodiment of the invention described in detail above.It should be appreciated that one of ordinary skill in the art without
Need creative work just can make many modifications and variations according to the design of the present invention.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical scheme, all should be in the protection domain being defined in the patent claims.
Claims (4)
1. a kind of coal mine gas extraction borehole binary channels reverse circulation aqueous vapor pigtail, including outer tube pipe axle（1）, inner tube assembly
（3）, guiding seal box（11）Seal box is considered to be worth doing with gang drill（17）, it is characterized in that：Said inner tube assembly（3）It is plugged into outer tube pipe axle
（1）It is interior to constitute rotatable double-decker；The outer tube pipe axle（1）, the guiding seal box（11）, gang drill bits seal box
（17）By screwed connection together；The guiding seal box（11）On be provided with snap joint（10）.
2. a kind of coal mine gas extraction borehole binary channels reverse circulation aqueous vapor pigtail as claimed in claim 1, it is characterized in that：
Said inner tube assembly（3）It is plugged into the outer tube pipe（1）In axle, interior annulus access is formed；The outer tube pipe axle（3）On be provided with
Several outer axial tube guide holes；The guiding seal box drive end bearing bracket（7）By screwed connection in the outer tube pipe axle（1）On；It is described to lead
Draw seal box（11）Afterbody considers seal box to be worth doing with the gang drill（17）Shell passes through anti-silk seal box locknut（14）It is anti-down with seal box
Padlock is female（13）Connection；The snap joint（10）It is arranged at the guiding seal box（11）Middle part, its inner passage connection institute
State outer tube pipe axle（1）With said inner tube assembly（3）The interior annular space formed；The gang drill considers seal box to be worth doing（17）It is connected to the outer tube
Pipe axle（1）Afterbody.
3. coal mine gas extraction borehole binary channels reverse circulation aqueous vapor pigtail as claimed in claim 1 or 2, it is characterized in that：
The guiding seal box（11）Forward end is provided with circlip（4）, the guiding seal box drive end bearing bracket（7）Interior lower section is set
There is felt oil seal（5）, top is provided with dust-proof O-ring seal（6）；The guiding seal box drive end bearing bracket（7）Before rear is provided with
Deep groove ball bearing（8）；The guiding seal box（11）Rear end and the outer tube pipe axle（1）Between space in be provided with rear zanjon
Ball bearing（12）, rear deep groove ball bearing（12）Inner ring is by anti-silk bearing locking nut（15）It is fixed on the outer tube pipe axle（1）On；It is described
Snap joint（10）Front and rear sides are provided with into medium O-ring seal（9）.
4. coal mine gas extraction borehole binary channels reverse circulation aqueous vapor pigtail as claimed in claim 1, it is characterized in that：It is described
Outer tube pipe axle（1）Front end is provided with clamp pilot trench（2）；The outer tube pipe axle（1）Afterbody considers seal box to be worth doing with the gang drill（17）It
Between be provided with gang drill bits O-ring seal（16）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710404045.9A CN107035325A (en) | 2017-06-01 | 2017-06-01 | A kind of coal mine gas extraction borehole binary channels reverse circulation aqueous vapor pigtail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710404045.9A CN107035325A (en) | 2017-06-01 | 2017-06-01 | A kind of coal mine gas extraction borehole binary channels reverse circulation aqueous vapor pigtail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107035325A true CN107035325A (en) | 2017-08-11 |
Family
ID=59539959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710404045.9A Pending CN107035325A (en) | 2017-06-01 | 2017-06-01 | A kind of coal mine gas extraction borehole binary channels reverse circulation aqueous vapor pigtail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107035325A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107387A (en) * | 2021-05-18 | 2021-07-13 | 铁福来装备制造集团股份有限公司 | Double-channel rotary joint for drilling |
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2017
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107387A (en) * | 2021-05-18 | 2021-07-13 | 铁福来装备制造集团股份有限公司 | Double-channel rotary joint for drilling |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170811 |
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| RJ01 | Rejection of invention patent application after publication |