CN107435519A - Low discharge creeps into high flow capacity seam cutting drill bit - Google Patents
Low discharge creeps into high flow capacity seam cutting drill bit Download PDFInfo
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- CN107435519A CN107435519A CN201610365601.1A CN201610365601A CN107435519A CN 107435519 A CN107435519 A CN 107435519A CN 201610365601 A CN201610365601 A CN 201610365601A CN 107435519 A CN107435519 A CN 107435519A
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- drill bit
- low discharge
- high flow
- flow capacity
- cutting drill
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- 238000005520 cutting process Methods 0.000 title claims abstract description 49
- 238000005553 drilling Methods 0.000 claims abstract description 58
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 12
- 239000002131 composite material Substances 0.000 claims description 6
- 239000010432 diamond Substances 0.000 claims description 6
- 241001484259 Lacuna Species 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000002474 experimental method Methods 0.000 claims description 4
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 230000004907 flux Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 230000008774 maternal effect Effects 0.000 claims description 3
- 239000003245 coal Substances 0.000 abstract description 25
- 238000005516 engineering process Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 14
- 238000010276 construction Methods 0.000 abstract description 7
- 230000035699 permeability Effects 0.000 abstract description 5
- 238000005086 pumping Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 230000003068 static effect Effects 0.000 description 2
- 206010028347 Muscle twitching Diseases 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 235000009566 rice Nutrition 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
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/61—Drill bits characterised by conduits or nozzles for drilling fluids characterised by the nozzle structure
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The present invention relates to a kind of low discharge to creep into high flow capacity seam cutting drill bit.Extensively using waterpower measure technology in control of coalmine gas measure, especially constructed in Di Chou lanes layer-through drilling, coal seam hydraulic slotted liner technique is carried out using hydraulic slotted liner technique equipment, carry out having carried out trial zone the anti-reflection technology in coal seam by the way of coal seam hydraulic fracture using water under high pressure afterwards, coordinate the introducing of high-pressure abradant jet current technology simultaneously, there is provided a kind of mature technology for completing this work improves product.The invention provides a kind of low discharge drilling high flow capacity seam cutting drill bit, and it is changed as switching condition using water as working media with water-carrying capacity, with the function of steadily switching repeatedly, Di Chou lanes are simultaneously worked in in the construction of this coal bed drilling, having and drilling steadily, rapidly and efficiently；Water under high pressure is switched to using changes in flow rate after the completion of drilling, hydraulic slotted liner technique is carried out to coal seam with high-pressure jet technology, it is anti-reflection to reach pressure release, improve gas permeability of coal seam, gas pumping efficiency is improved, reaches the effect of preferable gas control, drilling and two kinds of techniques of slot are completed simultaneously using the colliery of the technology, the working time is greatlyd save, is raised labour efficiency.
Description
Technical field
The present invention relates to a kind of colliery field drilling tool, more particularly to a kind of low discharge drilling high flow capacity seam cutting drill bit.
Background technology
Colliery is extensively using progress high-pressure jet hydraulic slotted liner technique in control of coalmine gas measure, the waterpower measure technologies such as hydraulic flushing in hole and hydraulic fracturing coal seam are anti-reflection, pilot region general characteristic：Coal seam buried depth rice, crustal stress is high, and gas pressure is big, and gas permeability of coal seam is poor, and gas pumping is difficult.For mine coal seam occurrence characteristics, employ layer-through drilling of being constructed in bottom plate gas lane, coal seam hydraulic slotted liner technique is carried out first with hydraulic slotted liner technique equipment, then carry out having carried out trial zone the anti-reflection technology in coal seam by the way of coal seam hydraulic fracture using water under high pressure, coordinate the introducing of high-pressure abradant jet current technology simultaneously, enable what high-pressure jet hydraulic turbulence requirement industrial and mining enterprises provided a kind of mature technology for completing this work to improve product.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, a kind of low discharge drilling high flow capacity seam cutting drill bit is provided, it is using water as working media, changed simultaneously with water-carrying capacity and kinetic energy is provided, as switching condition, not only with automatic switchover, also there is the function of steadily switching repeatedly, the bottom plate layer-through drilling construction of existing known technology is simultaneously worked in in the construction of this coal bed drilling, having and drilling steadily, rapidly and efficiently；Water under high pressure is switched to using changes in flow rate after the completion of drilling construction, hydraulic slotted liner technique is carried out to coal seam with high-pressure jet technology, it is anti-reflection to reach pressure release, gas permeability of coal seam is improved, improves gas pumping efficiency, reaches the better effects of preferable gas control, and also creep into high flow capacity seam cutting drill bit because improving production efficiency and vigorously promoting the use low discharge using the coal mine user of the technology, drilling and two kinds of techniques of slot are completed simultaneously, are greatlyd save the working time, are raised labour efficiency.
The present invention is achieved through the following technical solutions its goal of the invention：
A kind of low discharge creeps into high flow capacity seam cutting drill bit, including bit body, interior hexagonal holding screw, little spring, unidirectional steel ball, big spring, valve element, valve element regulation, adjusts flower seat, sealing shroud, nozzle, fittings body.
Described low discharge drilling high flow capacity seam cutting drill bit, including with common colliery PDC drill bit identical bit body 1, the afterbody of bit body 1 is cylindrical to be provided with four maintenance holes, usually blocked with interior hexagonal holding screw 2, the inside of bit body 1 is provided with spring fixing lug boss, sets little spring 3, unidirectional steel ball 4 thereon.
Described low discharge drilling high flow capacity seam cutting drill bit, including it is tangent with the front end of 1 assembly connection body of the bit body 11 big chamfering of setting and unidirectional steel ball 3, intermediate throughholes are connected with the interference of sealing ring 9, and valve element 4 forms spring base with the annular gap of connector 11, inside sets big spring 5.
Through hole is set in described low discharge drilling high flow capacity seam cutting drill bit, including connector 11, places valve element 6 and adjustment flower seat 8, the flower side of seat 8 is adjusted and is compressed with big spring 5.Outer circumference surface is provided with boss and coordinated with the inner hole key slot gap of connector 11.The adjustment flower outer circumference surface of seat 8 coordinates with interporal lacuna in connector 11 to be fixed.
Through hole is set in described low discharge drilling high flow capacity seam cutting drill bit, including connector 11, valve element 6 and valve element is placed and adjusts 7 and be threadedly coupled and coaxial.Divide across adjustment flower seat 8 both sides.
Described low discharge drilling high flow capacity seam cutting drill bit, including seal groove is internally provided with drilling rod maternal interface identical connector 11, inside set sealing ring 9 and manufactured three U-shaped openings, provided with screwed hole.Connector excircle is provided with three countersunk head screwed holes, screwed hole 10 3, nozzle of connection.
Described low discharge drilling high flow capacity seam cutting drill bit, it is characterised in that the front end of bit body 1 sets the wing plate of concave three, and PDC diamond composite sheets are designed with each wing plate.Two pillars are arranged with cylinder, each pillar is provided with a piece of PDC diamonds composite sheet.
Described low discharge drilling high flow capacity seam cutting drill bit, it is characterised in that footpath 18mm hydrophthalmias are opened among fittings body 11, little spring 3 is set before hydrophthalmia, the compression of little spring 3 promotes unidirectional steel ball 4, and steel ball 4 is pressed at the delivery port chamfering of fittings body 11.
Described low discharge drilling high flow capacity seam cutting drill bit, it is characterised in that plug-in flow control valve mans are placed among fittings body 11, wherein the labeled corresponding discharge scope of flow control valve and pressure of demarcation inflow-rate of water turbine.
Described low discharge drilling high flow capacity seam cutting drill bit, it is characterised in that three movable jet nozzles 10 are placed in the excircle countersunk head screwed hole of fittings body 11, respective model nozzle can voluntarily be matched according to conventional nozzle exit pressure flux experiment table.
Described low discharge drilling high flow capacity seam cutting drill bit, it is characterised in that the rear end internal thread of fittings body 11 is identical with common drilling rod box thread, and a whole set of drill bit can be connected with high pressure sealing drilling rod, can be also connected with common drilling rod.
Brief description of the drawings
Fig. 1 is the section of structure one that low discharge creeps into high flow capacity seam cutting drill bit.
In figure：1- bit bodys, hexagonal holding screw in 2-, 3- little springs, the unidirectional steel balls of 4-, 5- big springs, 6- valve elements, the regulation of 7- valve elements, 8- adjustment flower seats, 9- sealing shrouds, 10- nozzles, 11- fittings bodies
Fig. 2 is the left view that low discharge creeps into high flow capacity seam cutting drill bit.
Fig. 3 is the structure chart two that low discharge creeps into high flow capacity seam cutting drill bit.
Fig. 4 waits shaft side figure for low discharge drilling high flow capacity seam cutting drill bit.
Embodiment
Low discharge drilling high flow capacity seam cutting drill bit as shown in the figure, including bit body, interior hexagonal holding screw, little spring, unidirectional steel ball, big spring, valve element, valve element regulation, adjust flower seat, sealing shroud, nozzle, fittings body.
Described low discharge drilling high flow capacity seam cutting drill bit, including with common colliery PDC drill bit identical bit body 1, the afterbody of bit body 1 is cylindrical to be provided with four maintenance holes, usually blocked with interior hexagonal holding screw 2, the inside of bit body 1 is provided with spring fixing lug boss, sets little spring 3, unidirectional steel ball 4 thereon.
Described low discharge drilling high flow capacity seam cutting drill bit, including it is tangent with the front end of 1 assembly connection body of the bit body 11 big chamfering of setting and unidirectional steel ball 3, intermediate throughholes are connected with the interference of sealing ring 9, and valve element 4 forms spring base with the annular gap of connector 11, inside sets big spring 5.
Through hole is set in described low discharge drilling high flow capacity seam cutting drill bit, including connector 11, places valve element 6 and adjustment flower seat 8, the flower side of seat 8 is adjusted and is compressed with big spring 5.Outer circumference surface is provided with boss and coordinated with the inner hole key slot gap of connector 11.The adjustment flower outer circumference surface of seat 8 coordinates with interporal lacuna in connector 11 to be fixed.
Through hole is set in described low discharge drilling high flow capacity seam cutting drill bit, including connector 11, valve element 6 and valve element is placed and adjusts 7 and be threadedly coupled and coaxial.Divide across adjustment flower seat 8 both sides.
Described low discharge drilling high flow capacity seam cutting drill bit, including seal groove is internally provided with drilling rod maternal interface identical connector 11, inside set sealing ring 9 and manufactured three U-shaped openings, provided with screwed hole.Connector excircle is provided with three countersunk head screwed holes, screwed hole 10 3, nozzle of connection.
Described low discharge drilling high flow capacity seam cutting drill bit, it is characterised in that the front end of bit body 1 sets the wing plate of concave three, and PDC diamond composite sheets are designed with each wing plate.Two pillars are arranged with cylinder, each pillar is provided with a piece of PDC diamonds composite sheet.
Described low discharge drilling high flow capacity seam cutting drill bit, it is characterised in that footpath 18mm hydrophthalmias are opened among fittings body 11, little spring 3 is set before hydrophthalmia, the compression of little spring 3 promotes unidirectional steel ball 4, and steel ball 4 is pressed at the delivery port chamfering of fittings body 11.
Described low discharge drilling high flow capacity seam cutting drill bit, it is characterised in that plug-in flow control valve mans are placed among fittings body 11, wherein the labeled corresponding discharge scope of flow control valve and pressure of demarcation inflow-rate of water turbine.
Described low discharge drilling high flow capacity seam cutting drill bit, it is characterised in that three movable jet nozzles 10 are placed in the excircle countersunk head screwed hole of fittings body 11, respective model nozzle can voluntarily be matched according to conventional nozzle exit pressure flux experiment table.
Described low discharge drilling high flow capacity seam cutting drill bit, it is characterised in that the rear end internal thread of fittings body 11 is identical with common drilling rod box thread, and a whole set of drill bit can be connected with high pressure sealing drilling rod, can be also connected with common drilling rod.
During use, under normal circumstances, using underground static pressure water drill punching cooling, now the pressure of water is between 1-4MPa, hydraulic pressure low wash water is small, caused momentum is not enough to promote valve element 6, compression spring 5, valve seat 7, static pressure water passes through valve pocket lateral gap, by valve element and interporal lacuna, drill bit is supplied by valve seat endoporus and arranges powder, cooling water.
When drill bit is completed to drill, drilling rod is to crossing one meter to two meters position after roof, drilling construction is changed to high-pressure hydraulic slot operation, switching water source provides power water source for high pressure pumping station, water-carrying capacity now can meet hydraulic slotted liner technique job requirements completely, also greater than 4MPa after the flow Vavle switching of hydraulic pressure, pump discharge promotes valve pocket in the impulse force of 4000-8000L/ hour water, valve element, against the force of the spring, band movable valve plug moves forward, coordinate with hole end surface in valve seat, complete choke-out, pressure instantaneously rises, water jet can only come out from high pressure nozzle, hydraulic slotted liner technique operation is carried out to coal body.
The power water of the constant flow rate of high pressure pumping station offer is provided to the low discharge drilling high flow capacity seam cutting drill bit using hydraulic slotted liner technique operation, live water consumption can be reduced to reach by changing smaller nozzle or reducing nozzle quantity, find rational hydraulic slotted liner technique time and coal output examination experiment.
Low discharge drilling high flow capacity seam cutting drill bit cooperation drilling rod after switching twitches to put english back and forth in hole to be turned, and high-pressure water jet carries out screw type, fixed point to coal body, and portable different types are cut.And ickings can be led into side waterpower and take drilling out of, increase the diameter of coal bed drilling, improve gas permeability of coal seam, investigate to reach for a long time and reduce drilling construction amount, reduce labor strength, reach the effect for improving gas drainage under suction.
Drilled high pressure seam cutting drill bit by introducing low pressure in the anti-reflection technical measures of high-pressure jet hydraulic slotted liner technique and pressure break coal seam, Permeability Coefficent in Coal Seam is greatly improved, anti-reflection front and rear coal seam maximum drainage radius increases 10 times, same area drilling number reduces by 30%, and underground boring construction quantities substantially reduces.The technology solves the problem that Deep Mine gas is difficult to extraction, and a kind of new effective ways are provided for control of coalmine gas.
Claims (13)
1. a kind of low discharge creeps into high flow capacity seam cutting drill bit, it is characterised in that it includes and common colliery PDC drill bit identical bit body（1）, bit body（1）Afterbody is cylindrical to be provided with four maintenance holes, usually with interior hexagonal holding screw（2）Closure, bit body（1）Inside is provided with spring fixing lug boss, sets little spring thereon（3）, unidirectional steel ball（4）.
2. low discharge according to claim 1 creeps into high flow capacity seam cutting drill bit, including with bit body（1）Assembly connection body（11）Front end sets big chamfering and unidirectional steel ball（3）It is tangent, intermediate throughholes and sealing ring（9）Interference connects, valve element（4）With connector（11）Annular gap forms spring base, inside sets big spring（5）.
3. low discharge according to claim 1 creeps into high flow capacity seam cutting drill bit, including connector（11）Through hole is inside set, places valve element（6）With adjustment flower seat（8）, adjust flower seat（8）Side and big spring（5）Compress.
4. low discharge according to claim 1 creeps into high flow capacity seam cutting drill bit, including adjustment flower seat（8）Outer circumference surface is provided with boss and connector（11）Inner hole key slot gap coordinates.
5. low discharge according to claim 1 creeps into high flow capacity seam cutting drill bit, including adjustment flower seat（8）Outer circumference surface and connector（11）Interior interporal lacuna, which coordinates, to be fixed.
6. low discharge according to claim 1 creeps into high flow capacity seam cutting drill bit, including connector（11）Through hole is inside set, places valve element（6）Adjusted with valve element（7）It is threadedly coupled and coaxial, divides across adjustment flower seat（8）Both sides.
7. low discharge according to claim 1 creeps into high flow capacity seam cutting drill bit, including with drilling rod maternal interface identical connector（11）, connector（11）Seal groove is internally provided with, inside sets sealing ring（9）Three U-shaped openings are manufactured, provided with screwed hole, connector excircle is provided with three countersunk head screwed holes, screwed hole connection nozzle（10）Three.
8. low discharge according to claim 1 creeps into high flow capacity seam cutting drill bit, it is characterised in that bit body（1）Front end sets the wing plate of concave three, and PDC diamond composite sheets are designed with each wing plate.
9. low discharge according to claim 1 creeps into high flow capacity seam cutting drill bit, it is characterised in that bit body（1）Two pillars are arranged with cylinder, each pillar is provided with a piece of PDC diamonds composite sheet.
10. low discharge according to claim 1 creeps into high flow capacity seam cutting drill bit, it is characterised in that fittings body（11）Footpath 18mm hydrophthalmias are opened in centre, and little spring is set before hydrophthalmia（3）, little spring（3）Compression promotes unidirectional steel ball（4）, steel ball（4）It is pressed in fittings body（11）At delivery port chamfering.
11. low discharge according to claim 1 creeps into high flow capacity seam cutting drill bit, it is characterised in that fittings body（11）Plug-in flow control valve mans are placed in centre, wherein the labeled corresponding discharge scope of flow control valve and pressure of demarcation inflow-rate of water turbine.
12. low discharge according to claim 1 creeps into high flow capacity seam cutting drill bit, it is characterised in that fittings body（11）Three movable jet nozzles are placed in excircle countersunk head screwed hole（10）, respective model nozzle can voluntarily be matched according to conventional nozzle exit pressure flux experiment table.
13. low discharge according to claim 1 creeps into high flow capacity seam cutting drill bit, it is characterised in that fittings body（11）Rear end internal thread is identical with common drilling rod box thread, and a whole set of drill bit can be connected with high pressure sealing drilling rod, can be also connected with common drilling rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610365601.1A CN107435519A (en) | 2016-05-27 | 2016-05-27 | Low discharge creeps into high flow capacity seam cutting drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610365601.1A CN107435519A (en) | 2016-05-27 | 2016-05-27 | Low discharge creeps into high flow capacity seam cutting drill bit |
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| Publication Number | Publication Date |
|---|---|
| CN107435519A true CN107435519A (en) | 2017-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610365601.1A Pending CN107435519A (en) | 2016-05-27 | 2016-05-27 | Low discharge creeps into high flow capacity seam cutting drill bit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108316907A (en) * | 2018-01-08 | 2018-07-24 | 中国矿业大学 | It is a kind of to take abrasive material formula hydraulic slotted liner technique drill bit certainly |
| CN109505579A (en) * | 2019-01-16 | 2019-03-22 | 山东益矿钻采科技有限公司 | A kind of adjustable fluid injection joint-cutting device |
| CN109707436A (en) * | 2019-01-29 | 2019-05-03 | 王海峰 | A kind of multistage conversion permeability improvement device |
| CN110259377A (en) * | 2019-05-27 | 2019-09-20 | 天地科技股份有限公司 | A kind of control method of coal mine digging laneway coal rock dynamic disaster |
| CN112412462A (en) * | 2020-11-06 | 2021-02-26 | 山西晋城无烟煤矿业集团有限责任公司 | Hydraulic coal drawing process and equipment integrating soft coal seam drawing |
-
2016
- 2016-05-27 CN CN201610365601.1A patent/CN107435519A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108316907A (en) * | 2018-01-08 | 2018-07-24 | 中国矿业大学 | It is a kind of to take abrasive material formula hydraulic slotted liner technique drill bit certainly |
| WO2019134432A1 (en) * | 2018-01-08 | 2019-07-11 | 中国矿业大学 | Hydraulic cutting drill bit with self-carried abrasive material |
| CN108316907B (en) * | 2018-01-08 | 2020-05-05 | 中国矿业大学 | Self-carrying abrasive type hydraulic slotting drill bit |
| CN109505579A (en) * | 2019-01-16 | 2019-03-22 | 山东益矿钻采科技有限公司 | A kind of adjustable fluid injection joint-cutting device |
| CN109707436A (en) * | 2019-01-29 | 2019-05-03 | 王海峰 | A kind of multistage conversion permeability improvement device |
| CN110259377A (en) * | 2019-05-27 | 2019-09-20 | 天地科技股份有限公司 | A kind of control method of coal mine digging laneway coal rock dynamic disaster |
| CN112412462A (en) * | 2020-11-06 | 2021-02-26 | 山西晋城无烟煤矿业集团有限责任公司 | Hydraulic coal drawing process and equipment integrating soft coal seam drawing |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20171205 |