CN208330191U - A kind of compound directional drilling equipment of underground coal mine bad ground - Google Patents
A kind of compound directional drilling equipment of underground coal mine bad ground Download PDFInfo
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- CN208330191U CN208330191U CN201820993176.5U CN201820993176U CN208330191U CN 208330191 U CN208330191 U CN 208330191U CN 201820993176 U CN201820993176 U CN 201820993176U CN 208330191 U CN208330191 U CN 208330191U
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Abstract
The utility model provides a kind of compound directional drilling equipment of underground coal mine bad ground；Including drilling tool, orientation screw motor, radio magnetic wave measurement-while-drilling system, drill bit；The drill bit, orientation screw motor, radio magnetic wave measurement-while-drilling system, common drilling rod, the successively screwed connection of water pigtail；For the utility model using electromagnetic wave as transmission medium, telemetering depth is deep, and transmission rate is fast and data transmission is reliable effective, to the adaptable of underground working；Effective transmission of institute's measured data in hole can be completed using only common drilling rod and stratum, compared with wired drilling measurement, drilling rod intensity is higher, anti-shearing, fatigue resistance is more preferable, a large amount of human and material resources and financial resources are saved, it will be for the preferred manner and equipment of underground coal mine directional drilling.
Description
Technical field
The utility model relates to underground coal mine tunnel drilling fields, and in particular to a kind of underground coal mine bad ground is compound fixed
It is equipped to drilling.
Background technique
Technology of Directional Drilling originates from oil-gas exploration and development field, as the continuous development of drilling technique is goed deep into, the technology
Gradually it is introduced into the frontiers such as geological prospecting, underground coal mine probing.Nearly drill bit measurement while drilling Technology of Directional Drilling is underground coal mine
A new technology in drilling project field is currently used primarily in coal mine gas extraction, water damage prevention and treatment and geological structure
The drilling projects such as exploration.In directional drilling construction, if eyelet track dog-leg severity (rate of over-all angle change) is excessive, card is easily caused
It bores, pressure brill, burying, the generation for falling the down-hole accidents such as drilling tool, thus it is guaranteed that during eyelet smooth trajectory is directional drilling construction
Key link.
Currently, top drilling tool does not rotate when directional drilling is due to drilling, only simple sliding in coal mine drilling construction
Directional drilling (drill bit is rotated by the rotary power of screw motor) mode changes eyelet direction, increases inclination angle or subtracts inclination angle.?
During entire slipping drilling, bit pressure that the frictional force between drilling tool and hole wall causes drilling machine to be applied some be not applied to
On drill bit, the phenomenon that bit pressure suffered by this drill bit is less than the bit pressure that drilling machine is applied referred to as slipping drilling backing pressure.Secondly, sending
During brill, the reasons such as the conversion of the releasing, Frotteurism of drilling tool and the glutinous card of hole wall from static friction to dynamic friction will cause drilling tool
Elastic energy discharge suddenly and lead to not uniformly send brill, in the unexpected impingement holes bottom of drill bit sometimes, or even damage drill bit and hole
The phenomenon that power drilling tool, this drilling tool elastic energy discharges suddenly and drilling tool is caused unevenly to be sent into referred to as drilling tool frog is dynamic.Especially
It is during nearly horizontal segment drilling construction, with the lengthening of horizontal displacement, most of drilling tool lies in the bottom in hole, drilling tool and hole
The contact frictional resistance of wall is very big, and rotation drilling tool needs very big torque, and usual drilling tool is driven by drilling machine driving mechanism and obtained
One fixed revolving speed.Drilling tool is longer, and the ability of drilling tool transmitting torque and bit pressure also decreases, so that drilling tool end, that is, drill bit
Place generates twisting vibration, and vibration velocity is about the revolving speed of drilling tool outside hole, and the severe degree of vibration depends on drive system outside hole
Characteristic, the interaction of drill bit and rock and the friction of drilling tool and hole wall.When drill bit is periodically viscous and slides again, bore
Tool will generate " Friction " phenomenon, and this phenomenon is considered as that one kind declines drilling efficiency and often results in drilling tool destruction
A kind of very strong vibration of harmfulness, vibrate it is quite violent, drilling tool be in stop or turn " Friction " state, slide wink
Between bit speed considerably beyond the revolving speed of drilling tool outside hole, drill bit and drilling tool bear huge dynamic load.Due to frictional force, backing pressure, the frog
The reasons such as dynamic and Friction make entire eyelet track not smooth enough, and then the landwaste for causing drill bit broken can not be successfully and return
Out, certain risk is brought to normal drilling, it is necessary to which diligent hole flushing, the interior cleaning of retaining hole extend entire construction period in turn.
At present frequently with " screw motor+mwd system " in coal mine directional drilling construction.When slipping drilling, drill bit relies on spiral shell
The rotary power rotary drilling of bar motor.In dog-leg severity (rate of over-all angle change) biggish place, since part drilling tool lies in eyelet
The stiction of downside, drilling tool and hole wall increases, and drilling machine is caused to apply bit pressure, drilling project Shi Jinhang tool face orientation to drill bit
Extreme difficulties are brought, sliding backing pressure is frequently occurred, seriously restrict the speed of directional drilling.
The size of frictional force is equal to coefficient of friction multiplied by the lateral contact force of drilling tool and hole wall, in the situation that inclination angle is larger
Under, the stiction of eyelet can increase with it when normal drilling applies bit pressure, when the weight component of the part is not enough to overcome hole
It will appear backing pressure when the stiction of eye, once overcoming the static friction of eyelet, sliding friction can weaken therewith.Drilling tool starts to glide
When coefficient of friction be known as confficient of static friction, general confficient of static friction is about bigger by 25% than sliding the dynamic friction coefficient after starting.
The influence of torque and reaction torque to Kong Zhaoxia is particularly significant.When slipping drilling backing pressure, by the drilling tool of drilling machine driving
It rotates left and right and the drilling tool collective effect that travels forward generates a rate of penetration, correlative study shows that the rate of penetration is drilling tool edge
The function of eyelet track movement.The axial frictional resistance of eyelet can be reduced by rotating left and right drilling tool, and in ideal tool-face, drilling tool is from hole
To a certain position of drilling tool, the torque that drilling tool spin friction generates on the position fights hole wall friction, stops drilling tool for mouth rotation
Spin-ended turn；Meanwhile being passed up by the reaction torque that drill bit generates to a certain position of drilling tool, which is exactly to overcome bottom hole drilling tool
The position of combination and lower drilling tool reaction torque, the position are referred to as noise spot, and the region between noise spot and drill bit is known as interfering
Area.If rotary tools have made it into interference range from aperture, tools for angle just will affect.
In order to avoid aperture rotary tools make it into interference range, need to according to each construction operation acquire drilling torque and
The hanging torque of drill bit is rotated left and right by accurately calculating control drilling tool.In ideal tool-face, to reach without influencing tool-face
The depth of torque and drilling tool rotation must be controlled.Correlative study shows the operation special for this, and it is remote to rotate left and right torque
It less than upper button and break-out torque, therefore is not in the problem of inverting shackle.
Slide-and-guide drill assembly (BHA with curved shell helicoid hydraulic motor) GUIDED BORE HOLE technology has unique excellent
Point, this GUIDED BORE HOLE technology mainly include 3 parts: directional drilling, combined drilling and counterboring and track guiding.Concrete operations:
In site operation, if frictional resistance is excessive in hole, drilling speed is excessively slow, can be with combined drilling and counterboring a part, followed by directional drilling, even one
Root drilling rod directional drilling a part, combined drilling and counterboring a part, but premise have to be understood that the build angle rate of the stratum screw motor.
Field practice proves that this technology can solve the various problems encountered in directional hole construction, so that construction period greatly shortens,
Penetration rate improves by a relatively large margin, reduces construction cost, and can guarantee eyelet TRAJECTORY CONTROL precision well.But in practical application
In, it is difficult to predict the guidance capability of composite drill hole section, thus generally eyelet track is frequently adjusted with slide-and-guide.Combined drilling and counterboring
Feature can be regarded as tool face azimuth make continuous cycles variation slide-and-guide drilling, this tool face azimuth consecutive variations by
The rotation of chuck is realized.Such as assume during every turn of chuck that drill bit has similar rule in the movement of bottom hole, so that it may use
Drilling tool rotates the steering force vector on the drill bit in 1 week to state its overall guide effect.
Slide-and-guide drilling technology has the following advantages:
1. continuous steerable function can be well realized in the slide-and-guide drill assembly used；
2. having used slide-and-guide drilling tool continuous steerable drilling technology, drilling cycle is obviously shortened, and penetration rate obviously mentions
It is high；
3. guiding force can rotate average resultant force and the direction in l weeks with chuck when slide-and-guide drill assembly compound drilling
It is described；
4. torque can be released effectively when compound drilling, the occurrence probability of drilling accident is reduced；
5. bit pressure is not very big to steering force influence degree.
Measurement while drilling (Measurement While Drilling) abbreviation MWD, is a kind of directional drilling of measurement while drilling
Technological means, can directional drilling and the nearly drill bit of real-time measurement incessantly bottom hole parameter, effectively measure various bottom hole parameters,
And bottom hole parameter is timely and effectively sent to aperture computer, the good foundation of operating condition in analysis hole is provided for drilling project teacher,
Preferably to control eyelet track, to achieve the purpose that reduce drilling accident, target is provided valuable more in drilling safe
The reference data of value.
Currently, various bottom hole parameters are mostly measured using wired drilling measuring system in coal mine directional drilling construction, i.e., it is logical
Cross the related data that logical cable drilling rod carrys out transfer hole bottom rail mark, the advantages of this system can be achieved in hole between orifice devices
Two-way communication, it is particularly possible to using external power supply and along the copper core in drilling rod to hole inner sensor power.But the system has
Five disadvantages below: first: processing copper cable drilling rod is costly；Second: the more common drilling rod intensity of the drilling rod is low, easily causes the breaking of rod
The drilling accidents such as tool；Third: since machining accuracy, maloperation etc. cause poor contact to easily cause no signal or jitter；
4th: due to technical complexity, being not suitable in extended reach directional well, ultradeep well, ultra-long horizontal section horizontal well construction；The
Five: copper cable jackrod structure is complicated, and later period maintenance upkeep cost is high.
Utility model content
The purpose of this utility model is aiming at the shortcomings in the prior art, it is compound fixed to provide a kind of underground coal mine bad ground
It is equipped to drilling, maintenance cost is low, and safety coefficient is high.
To achieve the above object, the utility model discloses following technical solutions:
The utility model relates to a kind of compound directional drilling equipments of underground coal mine bad ground, comprising: drilling rod, orientation screw rod
Motor, radio magnetic wave measurement-while-drilling system, drill bit；Connection relationship is as follows: drill bit+orientation screw motor+radio magnetic wave with
Measuring system+common drilling rod+water pigtail is bored, all connection types are screwed connection；
The drill bit is PDC drill bit, focuses primarily upon the advantages of PDC drill bit that drill bit structure is simple and the high two o'clock of wearability
On.The wearability of diamond used by PDC drill bit, hard alloy is higher.In drill bit composition, cutting tooth is its master
Component is wanted, is not necessarily to drill bit itself in drilling broken rock, therefore PDC drill bit is also referred to as fixed drill bit.In the use of PDC drill bit
In early days, it is mainly used in some soft shale layers, and the continuing to optimize in performance and structure with PDC drill bit, at present PDC
Drill bit can use in ground consisting of hard rock and hard interbedded layer in long section；
The PDC drill bit wing design principle: 1. increasing wing and chip space fillet, forms smooth surface, blade contour
For fairing；2. wing top width can place cutting tooth, root is greatly thickened, and the wing back side has biggish oblique
Degree, gauge block and wing are smoothly connected and continue this gradient, and when drilling, which can guide on landwaste, to be returned；3. being arranged at bit port
It considers slot to be worth doing, angle is formed by two adjacent groups wing, it is narrow close to exporting, expand far from outlet, flare, high-velocity fluid energy damage
Lose it is small, more being capable of abundant movement landwaste during scour hole bottom；
The drilling rod includes special-shaped and spiral drilling rod and special-shaped and spiral without magnetic drilling rod, special-shaped and spiral drilling rod and special-shaped spiral shell
Section of the spin slot without magnetic drilling rod is that polygon is abnormally-structured, and spiral groove is equipped on drilling-rod external wall, since drill bit, connection
Relationship is as follows: special-shaped and spiral is without magnetic drilling rod (inside is equipped with measurement inserting tube)+special-shaped and spiral drilling rod；
The orientation screw motor is special-shaped orientation positive displacement screw motor, and motor outer wall stator sleeve section is that polygon is different
Type structure is equipped with spiral groove, its working principle is that the positive positive displacement based on Monot's principle on motor outer wall stator sleeve
Motor operations principle converts mechanical energy for the pressure energy of drilling fluid；
Though the orientation screw motor structure is simple, material and manufacturing quality are required very strict.On the one hand it requires
Stator rubber bushing must be Nian Jie with the inner wall of metal shell secured, and degumming is unable in work progress；On the other hand, rubber material
Physical property it is also extremely important, it is desirable that rubber not only has stronger bearing load ability, but also indeformable makes under high temperature
With ageing of rubber and chip off-falling phenomenon does not occur in the phase.There are injecting glue after-contraction problem on deformation for stator liner in the fabrication process, and
And bore of stator is set seriously to be detached from theoretical shape because rubber thickness is different, shrinks uneven, it is therefore necessary to infuse chamber mandrel to stator
It is modified, guarantees that the deformed shape of injecting glue accords with platform theory shape.Is to guarantee motor tool in the assembling process of screw motor
There is good leakproofness, apolegamy should be repeatedly carried out to rotor, stator makes motor have good mated condition；
The radio magnetic wave drilling measuring technology is to enter industrial applications the 1980s, is in wired drilling
A kind of novel drilling measuring technology to grow up on the basis of measuring technique, uploads data in a manner of electromagnetic transmission, not by
Drilling circulation medium influence, have that signal transmission rate is high, does not need circulating fluid and can transmit data, time of measuring it is short,
The features such as at low cost；
The radio magnetic wave measurement-while-drilling system includes bore portions, inserting tube part, wherein the bore portions include
Receiving antenna, mine explosion-suppression and intrinsic safety type computer, waveform decoder software and measurement while drilling processing software, connection relationship are as follows:
Mine explosion-suppression and intrinsic safety type computer (the inside is equipped with waveform decoder software and measurement while drilling software) is fixed on drilling machine, is received
On one end Jie drilling machine of antenna, one end is connected on earth anchor and is grounded；The inserting tube part includes insulated antenna, transmitting and measurement
Pipe nipple, battery short section and without magnetic outer tube, connection relationship is as follows: inserting tube (transmitting and measurement pipe nipple)+battery short section+insulated antenna,
Wherein battery short section and inserting tube are in no magnetic drilling rod；Inserting tube part is by the bottom holes parameter such as inclination angle, azimuth, tools for angle
It is sent to aperture using low-frequency electromagnetic wave signal, data are acquired by the reception device (receiving antenna) of bore portions, by amplification
Device analysis carries out data processing, then using treated data as the foundation of eyelet TRAJECTORY CONTROL.
The compound directional drilling equipment of a kind of underground coal mine bad ground above-mentioned, the drilling tool is trigone helicla flute drilling rod,
Drilling tool section is trigone shape.
The compound directional drilling equipment of a kind of underground coal mine bad ground above-mentioned, the motor outer wall of the orientation screw motor
Stator sleeve section is trigone shape.
The compound directional drilling equipment of a kind of underground coal mine bad ground above-mentioned, the drill bit is PDC drill bit.
The utility model also provides a kind of compound directional drilling equipment of underground coal mine bad ground in compound directional drilling side
To application.
The compound directional drilling of a kind of underground coal mine bad ground disclosed by the utility model is equipped and its application, has following
The utility model has the advantages that
The utility model cooperates compound directional drilling technique using radio magnetic wave measurement while drilling equipment, can keep eyelet
Track is more smooth, return slag is smooth, in turn avoids the generation of the drilling accidents such as bit freezing, pressure brill, burying, ensure that underground construction is pacified
Entirely, entire drill assembly does not have rest point to eyelet, can reduce frictional resistance, be conducive to eyelet cleaning, optimization hole body quality, reduces bit freezing
Risk, the extension for being conducive to hole depth；
The advantages of compound directional drilling: 1. simplifying arrangement and method for construction, completes straight hole section, orientation using compound Technology of Directional Drilling
Section increases the section construction of steady inclination angle, bore for one time sometimes can complete hole, greatly improve drilling efficiency；2. it is difficult to reduce directional hole construction
Degree.Straight hole section is short, and drilling construction safety such as needs to turn round orientation, adjusts inclination angle, not needing to make a trip can be completed；3. orient
Effect is fast.2~3 drilling rods of general orientation construction, reduce the non-cutting times such as measurement, orientation, and construction timeliness is high；4. orienting track control
That makes is good.Using compound directional drilling, can more preferable more easily control hole body track, adjust at any time, indices, which reach, to be set
Meter requires；
Using electromagnetic wave as transmission medium, telemetering depth is deep, and transmission rate is fast and data transmission is reliable effective, to underground
Operating condition it is adaptable；Effective transmission that institute's measured data in hole can be completed using only common drilling rod and stratum, with wired drilling
Measurement is compared, and drilling rod intensity is higher, anti-shearing, fatigue resistance is more preferable, saves a large amount of human and material resources and financial resources, will be
The preferred manner and equipment of underground coal mine directional drilling.
Detailed description of the invention
Fig. 1 is the utility model assembling schematic diagram,
Fig. 2 is trigone helicla flute without magnetic jackrod structure schematic diagram；
Fig. 3 is electromagnetic radiation schematic illustration, wherein 8 be bottom, and 9 be electromagnetic wave, and 10 be insulated antenna, and 11 be brill
Machine, 12 be earth anchor；
Fig. 4 is wireless drilling measuring system assembling figure,
Fig. 5 is orientation screw motor structural schematic diagram.
Specific embodiment
Below by the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment is only the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
Embodiment
The present embodiment is related to one kind, and the utility model relates to a kind of compound directional drilling equipments of underground coal mine bad ground, such as
Shown in attached drawing 1,2,3,4,5: including: drilling rod, orientation screw motor, radio magnetic wave measurement-while-drilling system 5, drill bit 7；Connection is closed
Be as follows: drill bit 7+ orients the common drilling rod of screw motor 6+ radio magnetic wave measurement-while-drilling system 5++water pigtail, all connection sides
Formula is screwed connection；The orientation screw motor 6 is connect by no magnetic outer tube 4 with drilling rod, and the radio magnetic wave is surveyed with brill
Amount system 5 is arranged inside the no magnetic outer tube 4.
The drill bit 7 is PDC drill bit, focuses primarily upon the advantages of PDC drill bit that drill bit structure is simple and the high two o'clock of wearability
On.The wearability of diamond used by PDC drill bit, hard alloy is higher.In drill bit composition, cutting tooth is its master
Component is wanted, is not necessarily to drill bit itself in drilling broken rock, therefore PDC drill bit is also referred to as fixed drill bit.In the use of PDC drill bit
In early days, it is mainly used in some soft shale layers, and the continuing to optimize in performance and structure with PDC drill bit, at present PDC
Drill bit can use in ground consisting of hard rock and hard interbedded layer in long section；
The PDC drill bit wing design principle: 1. increasing wing and chip space fillet, forms smooth surface, blade contour
For fairing；2. wing top width can place cutting tooth, root is greatly thickened, and the wing back side has biggish oblique
Degree, gauge block and wing are smoothly connected and continue this gradient, and when drilling, which can guide on landwaste, to be returned；3. being arranged at bit port
It considers slot to be worth doing, angle is formed by two adjacent groups wing, it is narrow close to exporting, expand far from outlet, flare, high-velocity fluid energy damage
Lose it is small, more being capable of abundant movement landwaste during scour hole bottom；
The drilling rod includes high strength helical traverse drill bar 1 and trigone helicla flute without magnetic drilling rod 2, high strength helical traverse drill bar 1
Section with trigone helicla flute without magnetic drilling rod 2 is that polygon is abnormally-structured, and spiral groove is equipped on drilling-rod external wall, from drill bit
Start, connection relationship is as follows: trigone helicla flute is without magnetic drilling rod 2 (inside is equipped with measurement inserting tube)+high strength helical traverse drill bar 1；Institute
Trigone helicla flute is stated without being provided with insulated antenna 3 in magnetic drilling rod 2.
The orientation screw motor 6 is special-shaped orientation positive displacement screw motor, and motor outer wall stator sleeve section is polygon
It is abnormally-structured, spiral groove is equipped on motor outer wall stator sleeve, its working principle is that the positive volume based on Monot's principle
Formula motor operations principle, i.e., convert mechanical energy for the pressure energy of drilling fluid；
Though the orientation screw motor structure is simple, material and manufacturing quality are required very strict.On the one hand it requires
Stator rubber bushing must be Nian Jie with the inner wall of metal shell secured, and degumming is unable in work progress；On the other hand, rubber material
Physical property it is also extremely important, it is desirable that rubber not only has stronger bearing load ability, but also indeformable makes under high temperature
With ageing of rubber and chip off-falling phenomenon does not occur in the phase.In the fabrication process, there are injecting glue after-contraction problem on deformation for stator liner, and
And because rubber thickness is different, it is uneven to shrink, bore of stator is set seriously to be detached from theoretical shape, it is therefore necessary to infuse chamber mandrel to stator
It is modified, guarantees that the deformed shape of injecting glue accords with platform theory shape.Is to guarantee motor tool in the assembling process of screw motor
There is good leakproofness, rotor, stator should repeatedly be matched, makes motor that there is good mated condition；
The radio magnetic wave drilling measuring technology is to enter industrial applications the 1980s, is in wired drilling
A kind of novel drilling measuring technology to grow up on the basis of measuring technique, uploads data in a manner of electromagnetic transmission, not by
Drilling circulation medium influence, have that signal transmission rate is high, does not need circulating fluid and can transmit data, time of measuring it is short,
The features such as at low cost；
Electromagnetic radiation principle is as shown in attached drawing 3, wherein 8 be bottom, and 9 be electromagnetic wave, and 10 be insulated antenna, and 11 be brill
Machine, 12 be earth anchor.
The radio magnetic wave measurement-while-drilling system, assembling figure as shown in Figure 4: it is short including pigtail connection 13, battery pack
Section 14, transition joint 15, measurement and transmitting pipe nipple 16, upper connection 17；
Including bore portions, inserting tube part, wherein the bore portions include receiving antenna, mine explosion-suppression and intrinsic safety type
Computer, waveform decoder software and measurement while drilling processing software, connection relationship are as follows: mine explosion-suppression and intrinsic safety type computer is (inner
Face is equipped with waveform decoder software and measurement while drilling software) it is fixed on drilling machine, on one end Jie drilling machine of receiving antenna, one end connects
It connects on earth anchor and is grounded；The inserting tube part include insulated antenna, transmitting and measurement pipe nipple 16, battery short section 14 and without magnetic outside
Pipe, connection relationship is as follows: inserting tube (transmitting and measurement pipe nipple 16)+battery short section 14+ insulated antenna, wherein battery short section 14 with
Inserting tube is in no magnetic drilling rod；The bottom holes parameter such as inclination angle, azimuth, tools for angle is utilized low-frequency electromagnetic wave by inserting tube part
Signal is sent to aperture, acquires data by the reception device (receiving antenna) of bore portions, carries out data by Amplifier Analysis
Processing, then using treated data as the foundation of eyelet TRAJECTORY CONTROL.
The compound directional drilling equipment of a kind of underground coal mine bad ground above-mentioned, the drilling tool is trigone helicla flute drilling rod,
Drilling tool section is trigone shape.
The compound directional drilling equipment of a kind of underground coal mine bad ground above-mentioned, the motor outer wall of the orientation screw motor
Stator sleeve section is trigone shape.
The compound directional drilling equipment of a kind of underground coal mine bad ground above-mentioned, the drill bit is PDC drill bit.
The utility model also provides a kind of compound directional drilling equipment of underground coal mine bad ground in compound directional drilling side
To application.
The compound directional drilling of a kind of underground coal mine bad ground disclosed by the utility model is equipped and its application, has following
The utility model has the advantages that
The utility model cooperates compound directional drilling technique using radio magnetic wave measurement while drilling equipment, can keep eyelet
Track is more smooth, return slag is smooth, in turn avoids the generation of the drilling accidents such as bit freezing, pressure brill, burying, ensure that underground construction is pacified
Entirely, entire drill assembly does not have rest point to eyelet, can reduce frictional resistance, be conducive to eyelet cleaning, optimization hole body quality, reduces bit freezing
Risk, the extension for being conducive to hole depth；
The advantages of compound directional drilling: 1. simplifying arrangement and method for construction, completes straight hole section, orientation using compound Technology of Directional Drilling
Section increases the section construction of steady inclination angle, bore for one time sometimes can complete hole, greatly improve drilling efficiency；2. it is difficult to reduce directional hole construction
Degree.Straight hole section is short, and drilling construction safety such as needs to turn round orientation, adjusts inclination angle, not needing to make a trip can be completed；3. orient
Effect is fast.2~3 drilling rods of general orientation construction, reduce the non-cutting times such as measurement, orientation, and construction timeliness is high；4. orienting track control
That makes is good.Using compound directional drilling, can more preferable more easily control hole body track, adjust at any time, indices, which reach, to be set
Meter requires；
Using electromagnetic wave as transmission medium, telemetering depth is deep, and transmission rate is fast and data transmission is reliable effective, to underground
Operating condition it is adaptable；Effective transmission that institute's measured data in hole can be completed using only common drilling rod and stratum, with wired drilling
Measurement is compared, and drilling rod intensity is higher, anti-shearing, fatigue resistance is more preferable, saves a large amount of human and material resources and financial resources, will be
The preferred manner and equipment of underground coal mine directional drilling.
The above is only the preferred embodiment of the utility model, rather than its limitations；Although should be pointed out that referring to upper
Each embodiment is stated the utility model is described in detail, those skilled in the art should understand that, it still can be with
It modifies to technical solution documented by the various embodiments described above, or some or all of the technical features is equally replaced
It changes；And these modifications and replacement, so that the essence of corresponding technical solution is detached from various embodiments of the utility model technical solution
Range.
Claims (5)
1. a kind of compound directional drilling equipment of underground coal mine bad ground, which is characterized in that including drilling tool, orientation screw motor,
Radio magnetic wave measurement-while-drilling system, drill bit；It is the drill bit, orientation screw motor, radio magnetic wave measurement-while-drilling system, common
Drilling rod, the successively screwed connection of water pigtail；
The drilling rod includes special-shaped and spiral drilling rod and special-shaped and spiral without magnetic drilling rod, special-shaped and spiral drilling rod and special-shaped and spiral
The section of no magnetic drilling rod is that polygon is abnormally-structured, and spiral groove is equipped on drilling-rod external wall；
The orientation screw motor is special-shaped orientation screw motor, and motor outer wall stator sleeve section is that polygon is abnormally-structured,
Motor outer wall stator sleeve is equipped with spiral groove；
The radio magnetic wave measurement-while-drilling system includes bore portions, inserting tube part, wherein the bore portions include receiving
Antenna, mine explosion-suppression and intrinsic safety type computer, waveform decoder software, measurement while drilling processing software, mine explosion-suppression and intrinsic safety type meter
Waveform decoder software and measurement while drilling processing software are installed inside calculation machine, are fixed on drilling machine, one end Jie of receiving antenna
On drilling machine, one end is connected on earth anchor and is grounded；The inserting tube part includes that insulated antenna, transmitting and measurement pipe nipple, battery are short
It saves and is in no magnetic drilling rod without magnetic outer tube, battery short section and inserting tube.
2. the compound directional drilling equipment of a kind of underground coal mine bad ground according to claim 1, which is characterized in that described
Drilling tool is trigone helicla flute drilling rod, and drilling tool section is trigone shape.
3. the compound directional drilling equipment of a kind of underground coal mine bad ground according to claim 1, which is characterized in that described
The motor outer wall stator sleeve section for orienting screw motor is trigone shape.
4. the compound directional drilling equipment of a kind of underground coal mine bad ground according to claim 1, which is characterized in that described
The connector of drilling rod is double step structure, and pin thread is 1:6 taper.
5. the compound directional drilling equipment of a kind of underground coal mine bad ground according to claim 1, which is characterized in that described
Drill bit is PDC drill bit.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566120A (en) * | 2019-09-11 | 2019-12-13 | 中煤科工集团西安研究院有限公司 | Multi-power directional combined drilling tool for hard rock of coal mine underground coal seam bottom plate and hole forming method thereof |
| CN111894477A (en) * | 2020-07-08 | 2020-11-06 | 河南理工大学 | Outburst coal seam hole protection and pressure relief combined drilling tool and using method thereof |
| CN114016908A (en) * | 2021-09-30 | 2022-02-08 | 中国石油化工股份有限公司 | Shale gas horizontal well adaptive track forming method |
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2018
- 2018-06-26 CN CN201820993176.5U patent/CN208330191U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566120A (en) * | 2019-09-11 | 2019-12-13 | 中煤科工集团西安研究院有限公司 | Multi-power directional combined drilling tool for hard rock of coal mine underground coal seam bottom plate and hole forming method thereof |
| CN111894477A (en) * | 2020-07-08 | 2020-11-06 | 河南理工大学 | Outburst coal seam hole protection and pressure relief combined drilling tool and using method thereof |
| CN114016908A (en) * | 2021-09-30 | 2022-02-08 | 中国石油化工股份有限公司 | Shale gas horizontal well adaptive track forming method |
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