CN105781419B - For broken ground drilling center deslagging injection type suction drilling tool and its application method - Google Patents
For broken ground drilling center deslagging injection type suction drilling tool and its application method Download PDFInfo
- Publication number
- CN105781419B CN105781419B CN201610272020.3A CN201610272020A CN105781419B CN 105781419 B CN105781419 B CN 105781419B CN 201610272020 A CN201610272020 A CN 201610272020A CN 105781419 B CN105781419 B CN 105781419B
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- drilling
- drill bit
- channel
- hole
- deslagging
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Classifications
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- 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
- 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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- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
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- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/07—Arrangements for treating drilling fluids outside the borehole for treating dust-laden gaseous fluids
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/16—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using gaseous fluids
Abstract
The invention discloses one kind aspirating drilling tool for broken ground drilling center deslagging injection type,Including air inlet pipe,Scum pipe,Power head and drilling rod,Slagging channel and inlet channel are equipped in drilling rod,Drilling rod front end is equipped with injection type suction drill bit,Injection type aspirates drill bit end and is equipped with cutter tip,Injection type aspirates drill bit top sidewall and is equipped with into cinder hole,Cutter tip inside side walls are equipped with spray-hole,Injection type, which aspirates, is equipped with high-pressure injection channel in drill bit,The present invention is by high-pressure injection channel to carrying out jet stream in the slagging channel of center,Negative pressure region is formed in slagging channel,Suction effect is generated to drilling cuttings into cinder hole,The jet air that spray-hole sprays generates agitaion to foot of hole,And push bottom hole drilling cuttings into migrating in cinder hole,Promote bottom hole landwaste by being entered in the slagging channel of center into cinder hole,It solves existing coal-bed gas pump drainage hole and creeps into the bit freezing encountered in the process,The problems such as deslagging is difficult in burying and hole,Greatly improve drilling efficiency and drilling depth.
Description
Technical field
The invention belongs to the specific process of drilling well or the technical fields of equipment, are specifically related to a kind of for broken ground brill
Injection type into center deslagging aspirates drilling tool and its application method.
Background technology
Coal bed gas because by as the Unconventional gas energy, and down-hole coal bed Gas Outburst etc. is had a major impact and by
Extensive concern carries out advance borehole and implements coal-bed gas pump drainage operation to be to realize coal seam using probing means in working face of coal seam
Gas utilizes the main method with the down-hole coal bed Gas Outburst of prevention, the coal bed drilling of existing use to be all made of traditional direct circulation and bore
Into technique and equipment, since cracks in coal seam development, quality are soft, in drilling process, bore flushing medium from drilling tool center into
Enter during annular gap between drilling tool and hole wall of bottom hole and portable hole subdrilling bits returns to slag inlet, often due to rinsing
Medium generates disturbance to hole wall or since bottom hole drilling cuttings causes drilling tool that blocking occurs with hole wall in migration process, causes to creep into
The problems such as bit freezing, burying and bottom hole landwaste discharge difficulty occur in journey.
Chinese Patent Application No. is 201310566830.6, entitled " in soft projecting coal bed drilling bilayer
The anti-blocking drilling tool of deslagging and its application method " specification discloses a kind of for the anti-blocking brill of deslagging in soft projecting coal bed drilling bilayer
Tool, including the anti-blocking drilling rod of deslagging, central backflow drill bit, rotatory sealing water supply installation or air supply device in bilayer, rotatory sealing supply
Water installations or air supply device are connect with the anti-blocking drilling rod of deslagging in the bilayer on drilling machine, and central backflow drill bit is mounted on deslagging in bilayer
The front end of anti-blocking drilling rod, bilayer in the anti-blocking drilling rod of deslagging by outer drilling rod body, inner connection tube and be welded on the more of inner connection tube inner wall
Hole pipe composition, for drilling rod by outer drilling rod body, inner connection tube and the antipriming pipe for being welded on inner connection tube inner wall, the bar structure is multiple
Miscellaneous, processing trouble, and intensity is low, cannot be applicable in the drilling operation of gun drilling, in addition drill bit part using centre bore into
Slag, centre bore slag inlet are arranged in cutter head centre position, and cutter head is easy in the case of drilling rod high speed rotation in central hole location
Place generates larger centrifugal force, makes waste residue that blocking can occur at centre bore slag inlet, causes that bit freezing occurs in drilling process, buries
It bores and the problems such as difficult is discharged in bottom hole landwaste.
Chinese Patent Application No. is 201310037786.X, and entitled " cyclone type jet bit " specification discloses
A kind of cyclone type jet bit includes the bit body equipped with cavity, is provided among bit body end and is connected to the cavity
Sample tap, bit body end set are useful for the cutter tip for creeping into and sampling, are arranged at cutter tip on drill bit body wall
There are the swirl injection hole being connected to cavity, swirl injection centerline hole and drill bit body axis interlaced in space；Eddy flow sprays
Perforation center line forms 5 °~60 ° angles with bit body drilling direction and cutter tip cutting face forms 30 °~80 ° angles；Separately
The outer jet bit is equally that centre bore slag input, centre bore slag inlet is used to be arranged in cutter head centre position, and cutter head is in drilling rod height
In the case of speed rotation, it is easy to generate larger centrifugal force at centre bore slag inlet, solves the problems, such as that centrifugal force is in knife
Cephalic region ejects the compressed air of rotation, by ickings be pressed into centre bore in, but this cyclone type jet bit its to drilling rod
Seal request and compressed air wind pressure have higher requirement, due to drilling rod diameter dimension be less than drill bit diameter ruler
It is very little, between drilling rod and drill hole inner wall there are it is larger and it is soft it is projecting coal bed in contain gas, be easy to hide wind, cause compression empty
The wind loss that the wind pressure of gas reaches at cutter head slag inlet is larger, especially deep well drilling operation when, it is difficult to avoid waste residue in
The problems such as blocking can occur at the slag inlet of heart hole, cause that bit freezing, burying and bottom hole landwaste discharge difficulty occur in drilling process.
Invention content
In view of this, the purpose of the present invention is to provide a kind of injection type suctions for creeping into center deslagging for broken ground
Drilling tool and its application method, the injection type suction drilling tool for being used for broken ground drilling center deslagging pass through high-pressure injection channel pair
Jet stream is carried out in the slagging channel of center, negative pressure region is formed in the slagging channel of center, by drill bit side into cinder hole to boring
Hole bottom drilling cuttings generates suction effect, and drilling cuttings is pumped into the slagging channel of center and carries out deslagging, while utilizing the spray of cutter head side
The jet air that perforation sprays generates agitaion to foot of hole, and pushes bottom hole drilling cuttings into migrating in cinder hole, promotes hole
Bed rock bits improve into cinder hole slag input efficiency by being entered in the slagging channel of center into cinder hole, solve existing coal-bed gas pump drainage
The problems such as deslagging is difficult in bit freezing, burying and the hole that hole drilling encounters in the process, greatly improves drilling efficiency and drilling depth.
In order to achieve the above object, a kind of injection type for broken ground drilling center deslagging of the present invention aspirates drilling tool,
Including air inlet pipe, scum pipe, power head and the double-layered central deslagging drilling rod being connected on power head, the air inlet pipe and scum pipe
It is connected on power head by rotary joint, the slagging channel being connected to scum pipe is provided in the double-layered central deslagging drilling rod
The inlet channel being connected to with air inlet pipe, the double-layered central deslagging drilling rod front end is equipped with injection type suction drill bit, described to draw
It penetrates in formula suction drill bit and is provided with the drill bit inlet channel being connected to inlet channel, the drill bit being connected to drill bit inlet channel exhaust
Storehouse, the drill bit exhaust passage being connected to drill bit exhaust storehouse, the slag input storehouse being connected to slagging channel and the slag input being connected to slag input storehouse
Channel, injection type suction drill bit end are provided with no less than 3 cutter tips for creeping into and sampling, the injection type
Drill bit top sidewall is aspirated to be equipped with into cinder hole, it is described to be connected into cinder hole with slag input channel, in the cutter tip inside side walls
It is provided with spray-hole, the spray-hole is connected to drill bit exhaust passage, is communicated between the drill bit inlet channel and slag input storehouse
High-pressure injection channel, high-pressure injection channel injection direction are set as same direction with slag input storehouse deslagging direction.
Further, the high-pressure injection channel is set as no less than 3 and is distributed in injection type suction drill bit.
Further, the medium position for being set as no less than 3 into cinder hole and being located between adjacent cutting cutter head.
Further, vertical structure, the drill bit exhaust are set as between the drill bit exhaust passage and drill bit inlet channel
Be set as incline structure between storehouse and drill bit exhaust passage, the cutter tip upper surface be provided be connected to drill bit exhaust storehouse and
The fabrication hole in storehouse is vented for processing drill.
Further, the power head is provided with dynamic head main spindle inner tube and dynamic head main spindle outer tube, the double-layered central row
Slag drilling rod includes drilling rod outer tube and drilling rod inner tube, between the power head and double-layered central deslagging drilling rod by main shaft pin end and
Tool joint box is fixedly connected, and the main shaft pin end is connect simultaneously with dynamic head main spindle external pipe thread and dynamic head main spindle inner tube
Grafting is tightly connected, and the tool joint box is connect with drilling rod external pipe thread simultaneously and drilling rod inner tube grafting is tightly connected, described
Main shaft pin end and tool joint box are connected, and are all provided between the main shaft pin end and the outer wall and inner wall of tool joint box
It is equipped with axially extending bore.
Further, it is connect by fillet of tool joint pins and transition between the double-layered central deslagging drilling rod and injection type suction drill bit
Head is fixedly connected, and described fillet of tool joint pins one end is connect with drilling rod external pipe thread simultaneously and drilling rod inner tube grafting is tightly connected, separately
One end is tightly connected with injection type suction drill bit grafting, and the transit joint both ends are aspirated with fillet of tool joint pins and injection type respectively
Drill bit thread connects, and axially extending bore I is both provided between the fillet of tool joint pins and the outer wall and inner wall of transit joint.
Further, the double-layered central deslagging drilling rod is by more drilling rods, tool joint box and fillet of tool joint pins assembly and connection
It is formed.
The invention also discloses it is a kind of for broken ground creep into center deslagging injection type aspirate drilling tool application method,
Its step are as follows：
1) drilling machine, drilling tool and its dreg removing system installation are completed and is connect, is sequentially sent to compressed air using rotary joint
Inlet channel I, drilling rod inlet channel, drill bit inlet channel in power head is respectively along high-pressure injection channel and drill bit exhaust passage
It sprays, power head connect and keep synchronous rotary with outer drilling rod body, realizes rotary drilling；
2) part band pressure gas stream forms negative pressure region behind high-pressure injection channel in slag input storehouse, makes to connect with slag input storehouse
Logical slag input channel generates suction effect, and the drilling cuttings convenient for drill bit to be broken to coal formation sucks slag input along into cinder hole, slag input channel
It in storehouse, is sent into the slagging channel of double-layered central deslagging drilling rod under the action of with pressure gas stream, another branch's band pressure gas stream is along brill
After head exhaust passage sprays, agitaion is generated to the drilling cuttings of foot of hole, drilling cuttings is sent at cinder hole, drilling cuttings edge is conveniently made
It into cinder hole, slag input channel sucking slag input storehouse, deslagging is completed in drilling rod cavity, can effectively avoid drilling contraction, hole wall loses
The steady influence for destroying collapse hole to hole drilling deslagging space；
3) drill bit is broken the drilling cuttings that coal is formed and returns out entrance and scum pipe along double-layered central deslagging drilling rod slagging channel by air-flow
Slagging deduster is connected, deslagging and dedusting are completed, drilling cuttings is migrated in enclosure space, avoids gas leakage and leakage dirt channel.
The beneficial effects of the present invention are：
1, the present invention passes through the centering of high-pressure injection channel for the injection type suction drilling tool of broken ground drilling center deslagging
Jet stream is carried out in heart slagging channel, negative pressure region is formed in the slagging channel of center, by drill bit side into cinder hole to drilling
Bottom drilling cuttings generates suction effect, and drilling cuttings is pumped into the slagging channel of center and carries out deslagging, while utilizing the injection of cutter head side
The jet air that hole sprays generates agitaion to foot of hole, and pushes bottom hole drilling cuttings into migrating in cinder hole, promotes bottom hole
Landwaste improves into cinder hole slag input efficiency by being entered in the slagging channel of center into cinder hole, solves existing coal-bed gas pump drainage hole
The problems such as deslagging is difficult in bit freezing, burying and the hole encountered in drilling process, greatly improves drilling efficiency and drilling depth；
2, the present invention uses public access for the injection type suction drilling tool drilling rod of broken ground drilling center deslagging using outer tube
Head is connected with the realization screw threads for fastening of female connector, and inner tube realizes that center centering positions by inserting mode, and uses the interior seal of tube
Circle realizes sealing function, keeps drilling rod operation installation simple, sealed reliable can realize the drilling operation of gun drilling.
Description of the drawings
In order to keep the purpose of the present invention, technical solution and advantageous effect clearer, the present invention provides following attached drawing and carries out
Explanation：
Fig. 1 is the sectional view for the injection type suction drilling tool power section that the present invention creeps into center deslagging for broken ground；
Fig. 2 is the sectional view for the injection type suction drill bit part that the present invention creeps into center deslagging for broken ground；
Fig. 3 is the sectional view that the present invention aspirates drill bit in drilling tool for the injection type of broken ground drilling center deslagging；
Fig. 4 is the stereogram that the present invention aspirates drill bit in drilling tool for the injection type of broken ground drilling center deslagging.
Description of the drawings：1- scum pipes；2- rotary joints；3- air inlet pipe；4- power heads；5- dynamic head main spindle inner tubes；6- is dynamic
Power head main shaft outer tube；7- inner tube O-ring seals；8- main shaft pin ends；9- sealing rings；10- tool joint boxs；11- drilling rod outer tubes；
12- drilling rod inner tubes；13- fillet of tool joint pins；14- transit joints；15- injection types aspirate drill bit；16- cutter tips；17- slag inputs are logical
Road；18- is into cinder hole；19- spray-holes；20- drill bit exhaust passages；21- drill bits are vented storehouse；22- drill bit inlet channels；23- slag inputs
Storehouse；24- high-pressure injections channel；25- inlet channels I；26- inlet channels II；27- inlet channels III；28- tool joint boxs into
Gas channel；29- slagging channels；30- drilling rod inlet channels；31- fillet of tool joint pins inlet channels；32- transit joint inlet channels；
33- negative pressure regions；34- fabrication holes.
Specific implementation mode
Below in conjunction with attached drawing, the preferred embodiment of the present invention is described in detail.
The injection type for creeping into center deslagging for broken ground as shown in Figure 1 for the present invention aspirates cuing open for drilling tool power section
View；It is illustrated in figure 2 section view of the present invention for the injection type suction drill bit part of broken ground drilling center deslagging
Figure；It is illustrated in figure 3 sectional view of the present invention for drill bit in the injection type suction drilling tool of broken ground drilling center deslagging；Such as
Fig. 4 show stereogram of the present invention for drill bit in the injection type suction drilling tool of broken ground drilling center deslagging, the present invention
A kind of injection type for broken ground drilling center deslagging aspirates drilling tool, including air inlet pipe 3, scum pipe 1, power head 4 and company
The double-layered central deslagging drilling rod being connected on power head 4, the air inlet pipe 3 and scum pipe 1 are connected to power head by rotary joint 2
On 4, the slagging channel 29 being connected to scum pipe 1 is provided in the double-layered central deslagging drilling rod and be connected to air inlet pipe 3 into
Gas channel, the double-layered central deslagging drilling rod front end are equipped with injection type suction drill bit 15, and the injection type aspirates in drill bit 15
It is provided with the drill bit inlet channel 22 being connected to inlet channel, the drill bit being connected to drill bit inlet channel 22 exhaust storehouse 21 and bores
Head exhaust storehouse 21 be connected to drill bit exhaust passage 20, the slag input storehouse 23 being connected to slagging channel 29 and be connected to slag input storehouse 23 into
Slag channel 17, injection type suction 15 end set of drill bit have no less than 3 cutter tips 16 for creeping into and sampling, institute
Injection type suction 15 top sidewall of drill bit is stated to be equipped with into cinder hole 18, it is described to be connected into cinder hole 18 with slag input channel 17, it is described to cut
Spray-hole 19 is provided in 16 inside side walls of sharpener head, the spray-hole 19 is connected to drill bit exhaust passage 20, the drill bit into
High-pressure injection channel 24,24 injection direction of high-pressure injection channel and slag input storehouse are communicated between gas channel 22 and slag input storehouse 23
23 deslagging directions are set as same direction.
The present embodiment, to carrying out jet stream in the slagging channel of center, is formed by high-pressure injection channel in the slagging channel of center
Negative pressure region generates suction effect to foot of hole drilling cuttings into cinder hole by drill bit side, drilling cuttings suction center deslagging is led to
Deslagging is carried out in road, while the jet air sprayed using the spray-hole of cutter head side generates agitaion to foot of hole, and
Push bottom hole drilling cuttings to bottom hole landwaste into migrating in cinder hole, is promoted by being entered in the slagging channel of center into cinder hole, improve into
Cinder hole slag input efficiency solves deslagging difficulty etc. in bit freezing, burying and the hole that existing coal-bed gas pump drainage hole drilling encounters in the process
Problem greatly improves drilling efficiency and drilling depth.
Further, the preferred high-pressure injection channel 24 is set as no less than 3 and is distributed on injection type suction drill bit
In 15, which is conducive to form stable negative pressure region 33 in slag input storehouse 23, convenient for suction drilling cuttings.
Further, preferably described to be set as no less than 3 into cinder hole 18 and be located between adjacent cutting cutter head 16
Medium position, the structure be conducive to improve drilling cuttings pumping efficiency, facilitate drilling cuttings be cut cutter head 16 cut after slide into bite
Region between first 16 is just aspirated into slagging channel 29 along into cinder hole 18.
Further, it preferably is set as vertical structure between the drill bit exhaust passage 20 and drill bit inlet channel 22, institute
State and be set as incline structure between drill bit exhaust storehouse 21 and drill bit exhaust passage 20,16 upper surface of the cutter tip be provided with
Drill bit is vented the connection of storehouse 21 and for the fabrication hole 34 in processing drill exhaust storehouse 21.
Further, the preferred power head 4 is provided with dynamic head main spindle inner tube 5 and dynamic head main spindle outer tube 6, described double
Layer center deslagging drilling rod includes drilling rod outer tube 11 and drilling rod inner tube 12, is led between the power head 5 and double-layered central deslagging drilling rod
Main shaft pin end 8 is crossed to be fixedly connected with tool joint box 10, the main shaft pin end 8 simultaneously with 6 screw thread of dynamic head main spindle outer tube
Connection and 7 grafting of dynamic head main spindle inner tube be tightly connected, the tool joint box 10 be threadedly coupled simultaneously with drilling rod outer tube 11 and
12 grafting of drilling rod inner tube is tightly connected, and the main shaft pin end 8 and tool joint box 10 are connected, the main shaft pin end 8
Be both provided with axially extending bore between the outer wall and inner wall of tool joint box 10, in the present embodiment dynamic head main spindle inner tube 5 with it is main
Axis pin end 8 realizes center centering positioning by inserting mode, and realizes sealing function, two channels using inner tube O-ring seal 7
Drilling rod inner tube 12 and two channel fillet of tool joint pins 13 and two channel tool joint boxs 10 are all made of inserting mode and realize centralized positioning,
And realize that sealing, the structure are connected using pin end with the realization screw threads for fastening of female connector using outer tube using sealing ring 9, inner tube
Center centering positioning is realized by inserting mode, and sealing function is realized using inner tube sealing ring, keeps drilling rod operation installation simple,
Sealed reliable can realize the drilling operation of gun drilling, combine after use with injection type suction drill bit 15, can ensure to draw
Formula suction 15 stream pressure size of drill bit and operation drilling intensity are penetrated, drilling efficiency and drilling depth are greatly improved.
Further, pass through fillet of tool joint pins 13 between the preferred double-layered central deslagging drilling rod and injection type suction drill bit
It is fixedly connected with transit joint 14,13 one end of the fillet of tool joint pins is threadedly coupled simultaneously with drilling rod outer tube 11 and drilling rod inner tube 12
Grafting is tightly connected, and suction 15 grafting of drill bit of the other end and injection type is tightly connected, 14 both ends of the transit joint respectively with brill
Bar pin end 13 and injection type suction drill bit 15 are threadedly coupled, the outer wall and inner wall of the fillet of tool joint pins 13 and transit joint 14
Between be both provided with axially extending bore I.
Further, the preferred double-layered central deslagging drilling rod is by more drilling rods, tool joint box 10 and fillet of tool joint pins
What 13 assembly and connections were formed, more two channel drilling rods pass through screw thread on two channel fillet of tool joint pins 13 and two channel drilling rods mothers
Threaded connection on connector 10 realizes that the lengthening of two channel drilling rods, the structure are conducive to improve the drilling depth of drilling tool.
The invention also discloses it is a kind of for broken ground creep into center deslagging injection type aspirate drilling tool application method,
Its step are as follows：
1) drilling machine, drilling tool and its dreg removing system installation are completed and is connect, is sequentially sent to compressed air using rotary joint
Inlet channel I, drilling rod inlet channel, drill bit inlet channel in power head is respectively along high-pressure injection channel and drill bit exhaust passage
It sprays, power head connect and keep synchronous rotary with outer drilling rod body, realizes rotary drilling；
2) part band pressure gas stream forms negative pressure region behind high-pressure injection channel in slag input storehouse, makes to connect with slag input storehouse
Logical slag input channel generates suction effect, and the drilling cuttings convenient for drill bit to be broken to coal formation sucks slag input along into cinder hole, slag input channel
It in storehouse, is sent into the slagging channel of double-layered central deslagging drilling rod under the action of with pressure gas stream, another branch's band pressure gas stream is along brill
After head exhaust passage sprays, agitaion is generated to the drilling cuttings of foot of hole, drilling cuttings is sent at cinder hole, drilling cuttings edge is conveniently made
It into cinder hole, slag input channel sucking slag input storehouse, deslagging is completed in drilling rod cavity, can effectively avoid drilling contraction, hole wall loses
The steady influence for destroying collapse hole to hole drilling deslagging space；
3) drill bit is broken the drilling cuttings that coal is formed and returns out entrance and scum pipe along double-layered central deslagging drilling rod slagging channel by air-flow
Slagging deduster is connected, deslagging and dedusting are completed, drilling cuttings is migrated in enclosure space, avoids gas leakage and leakage dirt channel.
Center deslagging technological principle：Under the driving of power head 4, drilling system realizes the drilling operation to stratum, drilling
In the process, compressed air enters rotary joint 2 by air inlet pipe 3, and sequentially enters air inlet by rotary joint 2, power head 4
Channel I 25, inlet channel II 26, inlet channel III 27, tool joint box inlet channel 28, drilling rod inlet channel 30, drilling rod are public
In connector inlet channel 31, transit joint inlet channel 32 and drill bit inlet channel 22, and it is divided into drill bit inlet channel 22
Two strands of jet streams respectively enter high-pressure injection channel 24 and drill bit exhaust storehouse 21, into high-pressure injection channel 24 air jet into
Negative pressure is generated in slag storehouse 23, and swabbing action is generated to foot of hole drilling cuttings by slag input channel 17, drilling cuttings in drilling is made to be sucked
To slagging channel 29, storehouse 21 is vented by drill bit, the air jet of drill bit exhaust passage 20 generates agitation to foot of hole and makees
With, and bottom hole drilling cuttings is pushed to migrate into slag input channel 17, promote bottom hole landwaste to enter slagging channel by slag input channel 17
In 29, carries drilling cuttings into the compressed air after slagging channel 29 and hole is drained by power head 4, rotary joint 2 and scum pipe 1
Outside, the drilling process of center deslagging is realized.
The annular channel that inlet channel I 25 is formed by dynamic head main spindle inner tube 5 and dynamic head main spindle outer tube 6 in the present embodiment
Composition；Inlet channel II 26 is made of the multiple axial circular holes processed on main shaft pin end 8；Inlet channel III 27 is by main shaft public access
First 8 and two channel tool joint box 10 formed annular gap form；Tool joint box inlet channel 28 is female by two channel drilling rods
The multiple axial circular hole compositions processed on connector 10；Slagging channel 29 is by dynamic head main spindle inner tube 5, main shaft pin end 8, two channels
Tool joint box 10, two channel drilling rod inner tubes 12, two channel fillet of tool joint pins 13, injection type suction drill bit 15 central passage connect
Connect composition；The annular gap that drilling rod inlet channel 30 is formed by two channel drilling rod inner tubes 12 with two channel drilling rod outer tubes 11 forms；
Fillet of tool joint pins inlet channel 31 is made of the multiple axial holes processed on two channel fillet of tool joint pins 13；Transit joint air inlet is logical
The annular gap that road 32 is formed by injection type suction drill bit 15 in excessive connector 14 forms.
Finally illustrate, preferred embodiment above is merely illustrative of the technical solution of the present invention and unrestricted, although logical
It crosses above preferred embodiment the present invention is described in detail, however, those skilled in the art should understand that, can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (2)
1. it is a kind of for broken ground drilling center deslagging injection type aspirate drilling tool, including air inlet pipe, scum pipe, power head and
The double-layered central deslagging drilling rod being connected on power head, the air inlet pipe and scum pipe are connected to power head by rotary joint
On, it is characterised in that：It is provided with the slagging channel being connected to scum pipe in the double-layered central deslagging drilling rod and connects with air inlet pipe
Logical inlet channel, the double-layered central deslagging drilling rod front end are equipped with injection type suction drill bit, and the injection type aspirates drill bit
It is inside provided with the drill bit inlet channel being connected to inlet channel, the drill bit being connected to drill bit inlet channel exhaust storehouse, arranged with drill bit
Drill bit exhaust passage, the slag input storehouse being connected to slagging channel and the slag input channel being connected to slag input storehouse of gas storehouse connection, it is described to draw
It penetrates formula suction drill bit end and is provided with no less than 3 cutter tips for creeping into and sampling, injection type suction drill bit top
Portion's side wall is equipped with into cinder hole, described to be connected into cinder hole with slag input channel, and injection is provided in the cutter tip inside side walls
Hole, the spray-hole are connected to drill bit exhaust passage, and it is logical that high-pressure injection is communicated between the drill bit inlet channel and slag input storehouse
Road, high-pressure injection channel injection direction are set as same direction with slag input storehouse deslagging direction；
The high-pressure injection channel is set as no less than 3 and is distributed in injection type suction drill bit；
The medium position for being set as no less than 3 into cinder hole and being located between adjacent cutting cutter head；
Vertical structure is set as between the drill bit exhaust passage and drill bit inlet channel, the drill bit exhaust storehouse is vented with drill bit
Incline structure is set as between channel, the cutter tip upper surface, which is provided with, to be connected to drill bit exhaust storehouse and be used for processing drill
It is vented the fabrication hole in storehouse；
The power head is provided with dynamic head main spindle inner tube and dynamic head main spindle outer tube, and the double-layered central deslagging drilling rod includes boring
Bar outer tube and drilling rod inner tube, it is solid by main shaft pin end and tool joint box between the power head and double-layered central deslagging drilling rod
Fixed connection, the main shaft pin end is connect with dynamic head main spindle external pipe thread simultaneously and dynamic head main spindle inner tube grafting sealing connects
It connects, the tool joint box is connect with drilling rod external pipe thread simultaneously and drilling rod inner tube grafting is tightly connected, the main shaft pin end
It is connected, is both provided between the main shaft pin end and the outer wall and inner wall of tool joint box axial logical with tool joint box
Hole；
The double-layered central deslagging drilling rod is fixedly connected between aspirating drill bit with injection type by fillet of tool joint pins and transit joint,
Described fillet of tool joint pins one end is connect with drilling rod external pipe thread simultaneously and drilling rod inner tube grafting is tightly connected, the other end and injection type
It aspirates drill bit grafting to be tightly connected, the transit joint both ends connect with fillet of tool joint pins and injection type suction drill bit thread respectively
It connects, axially extending bore I is both provided between the fillet of tool joint pins and the outer wall and inner wall of transit joint；
The double-layered central deslagging drilling rod is formed by more drilling rods, tool joint box and fillet of tool joint pins assembly and connection.
2. a kind of user aspirating drilling tool using the injection type for creeping into center deslagging for broken ground described in claim 1
Method, it is characterised in that：
1) drilling machine, drilling tool and its dreg removing system installation are completed and is connect, compressed air is sequentially sent to power using rotary joint
Inlet channel I, drilling rod inlet channel, drill bit inlet channel in head are sprayed along high-pressure injection channel and drill bit exhaust passage respectively
Go out, power head connect and keep synchronous rotary with outer drilling rod body, realizes rotary drilling；
2) part band pressure gas stream forms negative pressure region behind high-pressure injection channel in slag input storehouse, makes to be connected to slag input storehouse
Slag input channel generates suction effect, and the drilling cuttings convenient for drill bit to be broken to coal formation is sucked along into cinder hole, slag input channel in slag input storehouse,
It is sent into the slagging channel of double-layered central deslagging drilling rod under the action of with pressure gas stream, another branch's band pressure gas stream is vented along drill bit
After channel sprays, agitaion is generated to the drilling cuttings of foot of hole, drilling cuttings is sent at cinder hole, conveniently makes drilling cuttings along slag input
In hole, slag input channel sucking slag input storehouse, deslagging is completed in drilling rod cavity, can effectively avoid drilling contraction, hole wall unstable failure
Influence of the collapse hole to hole drilling deslagging space；
3) drill bit is broken the drilling cuttings of coal formation and is returned out along double-layered central deslagging drilling rod slagging channel into connecting with scum pipe by air-flow
Slagging deduster completes deslagging and dedusting, and drilling cuttings is migrated in enclosure space, avoids gas leakage and leakage dirt.
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| CN201610272020.3A CN105781419B (en) | 2016-04-28 | 2016-04-28 | For broken ground drilling center deslagging injection type suction drilling tool and its application method |
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| CN201610272020.3A CN105781419B (en) | 2016-04-28 | 2016-04-28 | For broken ground drilling center deslagging injection type suction drilling tool and its application method |
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| CN105781419B true CN105781419B (en) | 2018-07-20 |
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