CN104405290A - Reamer bit for drilling through coal seam to pre-extract gas - Google Patents
Reamer bit for drilling through coal seam to pre-extract gas Download PDFInfo
- Publication number
- CN104405290A CN104405290A CN201410713555.0A CN201410713555A CN104405290A CN 104405290 A CN104405290 A CN 104405290A CN 201410713555 A CN201410713555 A CN 201410713555A CN 104405290 A CN104405290 A CN 104405290A
- Authority
- CN
- China
- Prior art keywords
- guide vane
- composite sheet
- coal
- drilling
- hole
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
The invention discloses a reamer bit for drilling through coal seam to pre-extract gas. The reamer bit comprises a column body; a first guide fin and a second guide fin which are staggered by the position are arranged on the upper end surface of the column body; the adjacent end surfaces of the first guide fin and the second guide fin are welded and fixed through an alloy block; combined sheets are arranged on the right end surface of the first guide fin; first combined sheet pillars which are distributed at intervals are arranged on the left end surface of the second guide fin; an axial through hole is arranged in the middle part of the column body, and a main blade is rotatably mounted at the lower part of the through hole; second combined sheet pillars and combined half-sheet pillars are annularly distributed on the front end surface of the main fin along the side edge. The reamer bit is novel in structural design; all assemblies are reasonably distributed through the bit; the problems of low extracting concentration, poor extracting effect and incomplete outburst elimination of the coal seam during drilling through the coal seam to pre-extract gas in the actual work can be solved.
Description
technical field:
The present invention relates to drill bit, particularly relating to a kind of reaming bit taking out coal-bed gas for wearing coal bed drilling in advance.
background technology:
In order to solve when layer-through drilling takes out coal-bed gas in advance, extraction concentration is low, extracting result is poor, causes coal seam extinction thorough this difficult problem, adopts draw cave chambering process when designing boring on the basis of conventional layer-through drilling Gas pre-drainage technology.Coal seam exposed area in hole is increased by carrying out reaming to coal seam section, near boring, coal deformation amount and void content also will increase thereupon, increase the disturbance to surrounding medium, increase the dilatancy degree of boring surrounding medium, make coal seam pressure relief more abundant, the gas permeability in coal seam strengthens, and the extinction effect of boring Gas pre-drainage improves, and the possibility of coal and gas prominent reduces.
summary of the invention:
In order to make up prior art problem, the object of this invention is to provide a kind of reaming bit taking out coal-bed gas for wearing coal bed drilling in advance, solving when layer-through drilling takes out coal-bed gas in advance that extraction concentration is low, extracting result is poor, causes coal seam extinction not thorough.
Technical scheme of the present invention is as follows:
The reaming bit of coal-bed gas is taken out in advance for wearing coal bed drilling, comprise cylinder, it is characterized in that: described cylinder upper surface is provided with the first guide vane, the second guide vane that are staggeredly located, first guide vane, the second guide vane adjacent face are welded and fixed by alloy block, first guide vane right side is provided with composite sheet, and the second guide vane left side is provided with the first composite sheet post spaced apart; Be provided with axial through hole in the middle part of cylinder, through hole lower rotational is provided with the operator wing, and the front end face of the operator wing is distributed with the second composite sheet post and composite sheet attached column along its edge annular.
The described reaming bit taking out coal-bed gas for wearing coal bed drilling in advance, it is characterized in that: running through in the middle part of the first described guide vane, the second guide vane has alloy bar, first guide vane, the second guide vane all extend into the middle part of cylinder along the ring wall of cylinder, the lower end that the first guide vane, the second guide vane embed axially is embedded into cylinder upper end.
The described reaming bit taking out coal-bed gas for wearing coal bed drilling in advance, is characterized in that: described composite sheet, the first composite sheet post and the second composite sheet post, composite sheet attached column adopt that polycrystalline diamond material is processed into sheet, column, semicolumn are formed respectively.
The described reaming bit taking out coal-bed gas for wearing coal bed drilling in advance, is characterized in that: described composite sheet attached column is spaced apart in the lower limb of operator wing front end face.
The described reaming bit taking out coal-bed gas for wearing coal bed drilling in advance, is characterized in that: the first described guide vane, the second guide vane, the operator wing all adopt the machine-shaping of Q235 cast.
The described reaming bit taking out coal-bed gas for wearing coal bed drilling in advance, it is characterized in that: described cylinder be provided with through hole UNICOM, the radial rotating installing hole of operating the wing, wherein the installing hole inwall at the back side is provided with locating hole, and locating hole is embedded is inserted with locating bar.
Advantage of the present invention is:
Novel in structural design of the present invention, by by each assembly reasonable layout of drill bit, certificates handling, in practical work process, solves when layer-through drilling takes out coal-bed gas in advance that extraction concentration is low, extracting result is poor, causes the halfway problem of coal seam extinction.
accompanying drawing illustrates:
Fig. 1 is structural representation of the present invention.
Fig. 2 is the partial schematic diagram of rear TV structure of the present invention.
detailed description of the invention:
See accompanying drawing:
The reaming bit of coal-bed gas is taken out in advance for wearing coal bed drilling, comprise cylinder 1, cylinder 1 upper surface is provided with the first guide vane 2, second guide vane 3 be staggeredly located, first guide vane 2, second guide vane 3 adjacent face is welded and fixed by alloy block 4, first guide vane 2 right side is provided with composite sheet 5, and the second guide vane 3 left side is provided with the first composite sheet post 6 spaced apart; Be provided with axial through hole 7 in the middle part of cylinder 1, through hole 7 lower rotational is provided with the operator wing 8, and the front end face of the operator wing 8 is distributed with the second composite sheet post 9 and composite sheet attached column 10 along its edge annular.
Run through in the middle part of first guide vane 2, second guide vane 3 and have alloy bar 11, first guide vane 2, second guide vane 3 all extend into the middle part of cylinder along the ring wall of cylinder, the lower end that the first guide vane 2, second guide vane 3 embeds axially is embedded into cylinder upper end.
Composite sheet 5, first composite sheet post 6 and the second composite sheet post 9, composite sheet attached column 10 adopt that polycrystalline diamond material is processed into sheet, column, semicolumn are formed respectively.
Composite sheet attached column 10 is spaced apart in the lower limb of the operator wing 8 front end face.
First guide vane 2, second guide vane 3, the operator wing 8 all adopt the machine-shaping of Q235 cast.
Cylinder 1 be provided with through hole 7 UNICOM, the radial rotating installing hole 12 of operating the wing 8, wherein the installing hole inwall at the back side is provided with locating hole 13, and locating hole 13 is embedded is inserted with locating bar 14.
The present invention carries out the operations such as the verification of size after machining, and finally carries out the process of surface spraying rustproof paint, makes the probability that there will not be corrosion or reduce corrosion in the long-term course of work, increases the service life.
When the present invention in use bores gas extraction hole, starting the drill bit operator wing 8 is the through holes 7 li being incorporated in drill main body, after drill bit enters coal seam section, is slowly outwards opened by the operator wing with blast or hydraulic pressure, and then gets the larger boring in aperture.
Claims (6)
1. take out the reaming bit of coal-bed gas in advance for wearing coal bed drilling for one kind, comprise cylinder, it is characterized in that: described cylinder upper surface is provided with the first guide vane, the second guide vane that are staggeredly located, first guide vane, the second guide vane adjacent face are welded and fixed by alloy block, first guide vane right side is provided with composite sheet, and the second guide vane left side is provided with the first composite sheet post spaced apart; Be provided with axial through hole in the middle part of cylinder, through hole lower rotational is provided with the operator wing, and the front end face of the operator wing is distributed with the second composite sheet post and composite sheet attached column along its edge annular.
2. the reaming bit taking out coal-bed gas for wearing coal bed drilling in advance according to claim 1, it is characterized in that: running through in the middle part of the first described guide vane, the second guide vane has alloy bar, first guide vane, the second guide vane all extend into the middle part of cylinder along the ring wall of cylinder, the lower end that the first guide vane, the second guide vane embed axially is embedded into cylinder upper end.
3. the reaming bit taking out coal-bed gas for wearing coal bed drilling in advance according to claim 1, is characterized in that: described composite sheet, the first composite sheet post and the second composite sheet post, composite sheet attached column adopt that polycrystalline diamond material is processed into sheet, column, semicolumn are formed respectively.
4. the reaming bit taking out coal-bed gas for wearing coal bed drilling in advance according to claim 1, is characterized in that: described composite sheet attached column is spaced apart in the lower limb of operator wing front end face.
5. the reaming bit taking out coal-bed gas for wearing coal bed drilling in advance according to claim 1, is characterized in that: the first described guide vane, the second guide vane, the operator wing all adopt the machine-shaping of Q235 cast.
6. the reaming bit taking out coal-bed gas for wearing coal bed drilling in advance according to claim 1, it is characterized in that: described cylinder be provided with through hole UNICOM, the radial rotating installing hole of operating the wing, wherein the installing hole inwall at the back side is provided with locating hole, and locating hole is embedded is inserted with locating bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410713555.0A CN104405290A (en) | 2014-11-28 | 2014-11-28 | Reamer bit for drilling through coal seam to pre-extract gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410713555.0A CN104405290A (en) | 2014-11-28 | 2014-11-28 | Reamer bit for drilling through coal seam to pre-extract gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104405290A true CN104405290A (en) | 2015-03-11 |
Family
ID=52642947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410713555.0A Pending CN104405290A (en) | 2014-11-28 | 2014-11-28 | Reamer bit for drilling through coal seam to pre-extract gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104405290A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566127A (en) * | 2019-10-12 | 2019-12-13 | 中国矿业大学 | Hole expanding drilling tool for drilling and hole expanding method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5957225A (en) * | 1997-07-31 | 1999-09-28 | Bp Amoco Corporation | Drilling assembly and method of drilling for unstable and depleted formations |
| US20040124011A1 (en) * | 2002-12-31 | 2004-07-01 | Gledhill Andrew D. | Expandable bit with a secondary release device |
| CN201531216U (en) * | 2009-11-02 | 2010-07-21 | 南京捷嘉科技有限公司 | Multistage cutting block-resistant guiding control drill bit |
| CN101876236A (en) * | 2010-05-06 | 2010-11-03 | 彭桂湘 | Locally expanded multi-wing expanding bit |
| CN102155164A (en) * | 2011-02-24 | 2011-08-17 | 平顶山五环实业有限公司 | Thrust auxiliary reamer bit |
| CN202073499U (en) * | 2011-06-01 | 2011-12-14 | 淮南市志君钻探机具有限责任公司 | PDC (polycrystalline diamond compact) drilling and expanding single-wing combined drill bit |
| CN202467667U (en) * | 2011-12-28 | 2012-10-03 | 杨岗 | Diamond composite sheet drag-type bit |
| CN202560101U (en) * | 2012-04-06 | 2012-11-28 | 淮南矿业(集团)有限责任公司 | Hole digging drill |
| CN204266928U (en) * | 2014-11-28 | 2015-04-15 | 淮南宏昌科技有限责任公司 | A kind of reaming bit taking out coal-bed gas for wearing coal bed drilling in advance |
-
2014
- 2014-11-28 CN CN201410713555.0A patent/CN104405290A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5957225A (en) * | 1997-07-31 | 1999-09-28 | Bp Amoco Corporation | Drilling assembly and method of drilling for unstable and depleted formations |
| US20040124011A1 (en) * | 2002-12-31 | 2004-07-01 | Gledhill Andrew D. | Expandable bit with a secondary release device |
| CN201531216U (en) * | 2009-11-02 | 2010-07-21 | 南京捷嘉科技有限公司 | Multistage cutting block-resistant guiding control drill bit |
| CN101876236A (en) * | 2010-05-06 | 2010-11-03 | 彭桂湘 | Locally expanded multi-wing expanding bit |
| CN102155164A (en) * | 2011-02-24 | 2011-08-17 | 平顶山五环实业有限公司 | Thrust auxiliary reamer bit |
| CN202073499U (en) * | 2011-06-01 | 2011-12-14 | 淮南市志君钻探机具有限责任公司 | PDC (polycrystalline diamond compact) drilling and expanding single-wing combined drill bit |
| CN202467667U (en) * | 2011-12-28 | 2012-10-03 | 杨岗 | Diamond composite sheet drag-type bit |
| CN202560101U (en) * | 2012-04-06 | 2012-11-28 | 淮南矿业(集团)有限责任公司 | Hole digging drill |
| CN204266928U (en) * | 2014-11-28 | 2015-04-15 | 淮南宏昌科技有限责任公司 | A kind of reaming bit taking out coal-bed gas for wearing coal bed drilling in advance |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566127A (en) * | 2019-10-12 | 2019-12-13 | 中国矿业大学 | Hole expanding drilling tool for drilling and hole expanding method thereof |
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| 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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150311 |