CN206987733U - A kind of screw drive rock bit - Google Patents
A kind of screw drive rock bit Download PDFInfo
- Publication number
- CN206987733U CN206987733U CN201720460483.2U CN201720460483U CN206987733U CN 206987733 U CN206987733 U CN 206987733U CN 201720460483 U CN201720460483 U CN 201720460483U CN 206987733 U CN206987733 U CN 206987733U
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- China
- Prior art keywords
- rotor
- drive
- gear wheel
- stator
- gear
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model discloses screw drive rock bit, its technical scheme is to include gear wheel and body, in addition to stator and rotor, and stator opposing body fixes, and stator and rotor form screw rod power motor；Rotor and gear wheel form rotary drive and coordinated, and rotor connects and composes axle by universal drive shaft and drive plate and is driven, and drive plate forms gear drive with gear wheel.Body is provided with the inner chamber isolated with inlet opening, and drive plate forms rotatory sealing cooperation mounted in interior intracavitary and with body；Gear wheel is provided with driven gear, and gear wheel forms gear drive by driven gear and drive plate.The utility model promotes drilling well industry progress to play an important roll the function and application of extension rock bit.Drilling tool can be overcome to grind with the borehole wall to hinder, improve efficiency of breaking rock, still ensure that slurry fluid circulates in drill bit when realizing pump without discharge capacity.
Description
Technical field
A kind of drill bit is the utility model is related to, especially a kind of screw drive rock bit, is drilled suitable for oil mine
Field.
Background technology
Conventional roller bits in drilling well industry, while gear wheel revolves round the sun can only passive rotation, in the pressure of the drill and drill string rotating
Under effect, tooth crushing and wedging rock, while produce certain slip and shear rock.The broken rock machine of conventional roller bits
Reason：When rock bit revolves round the sun, the passive rotation of gear wheel, in the presence of the pressure of the drill and drill string rotating, tooth crushing and wedging rock, together
When produce certain slip and shear rock.When gear wheel rolls in shaft bottom, the tooth on gear wheel impacts, is pressed into stratum successively,
Bottom rock is crushed a part by this effect, at the same the shear action come by gear wheel slip band ream remain between tooth it is another
Part rock.
The problem of there is currently be：Want to improve tooth to the number of shocks of rock, can only be by improving drill speed；Bore
Has the mill resistance with the borehole wall so that moment of torsion and rotating speed on drill bit are slackened, it is impossible to keep stable, be unfavorable for broken rock；Flowed in drilling tool
Body discharge capacity it is small or without when, annular space easily formed sand setting landfill drilling tool.
Utility model content
The purpose of this utility model is to provide a kind of screw drive rock bit, overcomes drilling tool to be ground with the borehole wall and hinders, and improves broken
Rock efficiency, still ensure that slurry fluid circulates in drill bit when realizing pump without discharge capacity.
The utility model is achieved through the following technical solutions：
The first screw drive rock bit, including gear wheel 7 and body 4, gear wheel 7 and the rotary drive of body 4 coordinate, body
Inlet opening 8 is axially arranged with 4, inlet opening 8 connects downwards nozzle 14；Wherein：Stator 2 is fixed with the inlet opening 8 of body 4,
The internal rotating of stator 2 is combined with rotor 1, and annular seal space 9 is reserved between stator 2 and rotor 1, and stator 2 and rotor 1 form screw rod power
Motor；The quantity of gear wheel 7 is one or several, and the periphery of gear wheel 7 is provided with driven gear 6；Osculum 3 is provided with the body 4,
Annular seal space 9 of the osculum 3 upwards between stator 2 and rotor 1 connects, and osculum 3 connects downwards with nozzle 14；The bottom of body 4
Provided with the inner chamber 15 isolated with inlet opening 8, the lower end of rotor 1 connection drive plate 5, drive plate 5 in inner chamber 15, and with body 4
Rotatory sealing is formed to coordinate；The driven gear 6 of drive plate 5 and gear wheel 7 forms gear drive and coordinated.
Such scheme further comprises：
The lower end of rotor 1 connects drive plate 5 by universal drive shaft 13.
Universal drive shaft 13 is connected by shaft coupling 12 with rotor 1, and shaft coupling is spline structure.
The rotor 1 is central axial to be provided with mesopore 10, and bottom is provided with radial direction bottom outlet 11, and mesopore 10 passes through bottom outlet 11 and draining
Hole 3 connects.
Second of screw drive rock bit, including gear wheel 7 and body 4, gear wheel 7 and the rotary drive of body 4 coordinate, body
Inlet opening 8 is axially arranged with 4, inlet opening 8 connects downwards nozzle 14；It is characterized in that：Screw rod pipe nipple is connected with the top of body 4
16, stator 2 is fixed with screw rod pipe nipple 16, and the internal rotating of stator 2 is combined with rotor 1, and sealing is reserved between stator 2 and rotor 1
Chamber 9, stator 2 and rotor 1 form screw rod power motor；The quantity of gear wheel 7 is one or several, and the periphery of gear wheel 7 is provided with driven
Gear 6；Osculum 3 is provided with the body 4, annular seal space 9 of the osculum 3 upwards between stator 2 and rotor 1 connects, draining
Hole 3 connects downwards with nozzle 14；The bottom of body 4 is provided with the inner chamber 15 isolated with inlet opening 8, and the lower end of rotor 1 connects drive plate 5,
Drive plate 5 forms rotatory sealing with body 4 and coordinated in inner chamber 15；The driven gear 6 of drive plate 5 and gear wheel 7 forms tooth
Wheel transmission coordinates.
Such scheme further comprises：
The lower end of rotor 1 connects drive plate 5 by universal drive shaft 13.
Universal drive shaft 13 is connected by shaft coupling 12 with rotor 1, and shaft coupling 12 is that spline is connected cooperation with universal drive shaft 13.
The rotor 1 is central axial to be provided with mesopore 10, and bottom is provided with radial direction bottom outlet 11, and mesopore 10 passes through bottom outlet 11 and draining
Hole 3 connects.
Device for measuring force described in the utility model has an advantageous effect in that：1. the stator rotation of fluid drive screw mechanism
Gear wheel is driven to rotate, gear wheel drives drill bit to rotate, and the mill for overcoming drilling tool and the borehole wall hinders, and is advantageous to keep drill speed and maintenance
Moment of torsion；2. fluid drives gear wheel active rotation, moment of torsion during than gear wheel passive rotation is big, rotating speed is high, and moment of torsion causes greatly tooth pair
Rock stratum generation is actively planed, and power is big, and rotating speed is high causes drill bit every revolution, and tooth press-in and number of shocks increase, and efficiency of breaking rock is more
It is high；3. in the case of fluid is without discharge capacity or low discharge capacity, rotary drill bit can allow gear wheel to drive stator rotation, and screw mechanism can convection current
Body produces downward swabbing action, promotes fluid to be sprayed by nozzle, washes away drilling tool water hole and clean drill bit and shaft bottom.
Brief description of the drawings
Fig. 1 is a kind of screw drive rock bit structural representation of the present utility model.
Fig. 2 is second of screw drive rock bit structural representation of the present utility model.
Wherein：1st, rotor, 2, stator, 3, osculum, 4, body, 5, drive plate, 6, driven gear, 7, gear wheel, 8, water inlet
Hole, 9, annular seal space, 10, mesopore, 11, bottom outlet, 12, shaft coupling, 13, universal drive shaft, 14, nozzle, 15, inner chamber, 16, screw rod pipe nipple.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
Embodiment 1：
Referring to the drawings 1, screw drive rock bit of the present utility model, including body 4, gear wheel 7, inlet opening 8 and nozzle
14, in inlet opening 8 built with screw rod power motor, for the stator 7 of screw rod power motor on the inwall of inlet opening 8, rotor 1 is downward
Stretch into inside body 4.Packed inner chamber 15 is set inside body 4, inner chamber 15 is built with drive plate 5, drive plate 5 and body 4
Rotatory sealing is formed to coordinate.Rotor 1 passes sequentially through shaft coupling 12 and universal drive shaft 13 is connected with drive plate 5, the upper end of drive plate 5 and ten thousand
It is fixedly connected to axle 13 and forms axle transmission to transmit moment of torsion, hypomere is provided with tooth.Shaft coupling 12 is spline structure, and with universal drive shaft 13
Moment of torsion is transmitted together.There is driven gear 6 one end of gear wheel 7, and driven gear 6 stretches into annular seal space 15 and engages structure with the tooth of drive plate 5
Into gear drive.
Annular seal space 9 in screw rod power motor, between stator 2 and rotor 1, the lower end of annular seal space 9 with drill body 4
Osculum 3 connects, and osculum 3 connects the nozzle 14 of drill bit.In addition, rotor 1 also has axial mesopore 10, for leading to as fluid
Road, mesopore 10 are connected by the bottom outlet 11 of the bottom radial direction of rotor 1 with osculum 3, the part stream for allowing top drilling tool water hole transmission
Body is directly discharged without the annular seal space 9 of screw rod power motor by nozzle 14, rinses gear wheel and shaft bottom.
Embodiment 2：
Another embodiment of the present utility model as different from Example 1, passes through spiral shell referring to the drawings 2 above drill bit
Line connecting screw pipe nipple 16, stator 2 is mounted inside screw rod pipe nipple 16.The runner rubber of actually stator 2 is directly sulfided into
On the inwall of screw rod pipe nipple 16, rotor 1 is arranged in stator 2 and extends downwardly into transmit to drive plate 5 in drill bit inlet opening 8 and turns round type
Square.The top of screw rod pipe nipple 16 can also add by-passing valve, drilling tool internal and external pressure balance when realization makes a trip.
Gear wheel quantity in above-described embodiment is for one and multiple, both can be single-cone rotary drill bit or symmetrical cloth
The double gear wheels put, or common tricone bit, gear wheel quantity can also be more than three.
The course of work of the present utility model is as follows：Screw drive rock bit is connected on well drilling pipe column or BHA
Bottom, during turn on pump, high-pressure fluid such as mud is transmitted to screw rod power motor, driving rotor 1 and rotated, and rotor 1 passes through transmission
Disk 5 drives gear wheel 7 to rotate.So relatively conventional rock bit, gear wheel 7 realize active self-rotating, the pressure portion conversion of mud
Into the moment of torsion of the rotation of gear wheel 7.
In the utility model, slurry fluid pressure changes into the moment of torsion of screw stator, and acts on the tooth of gear wheel,
Fluid drives gear wheel active rotation, and moment of torsion during than gear wheel passive rotation is big, rotating speed is high.Moment of torsion is big so that tooth produces to rock stratum
Raw power of actively planing increases, it is easier to wedging rock and reams the rock remained between tooth；Rotating speed is high so that every turn of drill bit one
Circle, tooth press-in and number of shocks increase.To sum up, the active self-rotating of gear wheel causes the efficiency of breaking rock of drill bit per revolution to obtain
Improve.
In addition, another effect of the present utility model is：When having the pressure of the drill in shaft bottom, drill bit, which rotates, drives the quilt of gear wheel 7
Turn is moved, and the rotor driven 1 of gear wheel 7 rotates so that stator 2 and rotor 1 become screw pump, and producing suction to upper flow makees
With promoting the flows downward in the drilling tool water hole of top and sprayed by nozzle 14.Keep drilling tool water hole unobstructed, flushing manhole bottom.
This plays the role of actual in drilling well industry：In drilling pump termination of pumping, in the case that pump speed is low, pumpage is small, flowed in drilling tool water hole
Body is slow without flow velocity or flow velocity, and now annular fluid large rock-carrying ability is poor, and landwaste easily falls shaft bottom after rise and produces a large amount of sand settings, and sand setting easily buries
Drilling tool.Now unlocking turntable or top are driven, and rock bit of the present utility model is rotated in shaft bottom, and drilling tool water hole can be kept unobstructed,
And can cleans drill bit and shaft bottom, keeps returning in annular fluid, avoids sand setting burying from having.
Claims (8)
1. a kind of screw drive rock bit, including gear wheel（7）And body（4）, gear wheel（7）And body（4）Rotary drive coordinates,
Body（4）Inside it is axially arranged with inlet opening（8）, inlet opening（8）Connection nozzle downwards（14）；It is characterized in that：In body（4）Enter
Water hole（8）Place is fixed with stator（2）, stator（2）Internal rotating is combined with rotor（1）, stator（2）And rotor（1）Between reserve
Annular seal space（9）, stator（2）And rotor（1）Form screw rod power motor；The gear wheel（7）Quantity is one or several, gear wheel
（7）Periphery is provided with driven gear（6）；The body（4）It is interior to be provided with osculum（3）, osculum（3）Upwards and stator（2）With turn
Son（1）Between annular seal space（9）Connection, osculum（3）Downwards and nozzle（14）Connection；Body（4）Bottom is provided with and inlet opening
（8）The inner chamber of isolation（15）, rotor（1）Lower end connects drive plate（5）, drive plate（5）Mounted in inner chamber（15）It is interior, and and body
（4）Rotatory sealing is formed to coordinate；Drive plate（5）With gear wheel（7）Driven gear（6）Gear drive is formed to coordinate.
2. screw drive rock bit according to claim 1, it is characterised in that：Rotor（1）Lower end passes through universal drive shaft
（13）Connect drive plate（5）.
3. screw drive rock bit according to claim 2, it is characterised in that：Universal drive shaft（13）Pass through shaft coupling（12）
With rotor（1）Connection, and shaft coupling（12）For spline structure.
4. the screw drive rock bit according to claims 1 to 3 any one, it is characterised in that：The rotor（1）In
The heart is axially arranged with mesopore（10）, bottom is provided with radial direction bottom outlet（11）, mesopore（10）Pass through bottom outlet（11）With osculum（3）Connection.
5. a kind of screw drive rock bit, including gear wheel（7）And body（4）, gear wheel（7）And body（4）Rotary drive coordinates,
Body（4）Inside it is axially arranged with inlet opening（8）, inlet opening（8）Connection nozzle downwards（14）；It is characterized in that：In body（4）Top
It is connected with screw rod pipe nipple（16）, screw rod pipe nipple（16）Inside it is fixed with stator（2）, stator（2）Internal rotating is combined with rotor（1）,
Stator（2）And rotor（1）Between reserve annular seal space（9）, stator（2）And rotor（1）Form screw rod power motor；The gear wheel
（7）Quantity is one or several, gear wheel（7）Periphery is provided with driven gear（6）；The body（4）It is interior to be provided with osculum（3）, row
Water hole（3）Upwards and stator（2）And rotor（1）Between annular seal space（9）Connection, osculum（3）Downwards and nozzle（14）Connection；
Body（4）Bottom is provided with and inlet opening（8）The inner chamber of isolation（15）, rotor（1）Lower end connects drive plate（5）, drive plate（5）Dress
In inner chamber（15）It is interior, and and body（4）Rotatory sealing is formed to coordinate；Drive plate（5）With gear wheel（7）Driven gear（6）Form
Gear drive coordinates.
6. screw drive rock bit according to claim 5, it is characterised in that：Rotor（1）Lower end passes through universal drive shaft
（13）Connect drive plate（5）.
7. screw drive rock bit according to claim 6, it is characterised in that：Universal drive shaft（13）Pass through shaft coupling（12）
With rotor（1）Connection, and shaft coupling（12）For spline structure.
8. the screw drive rock bit according to claim 5 to 7 any one, it is characterised in that：The rotor（1）In
The heart is axially arranged with mesopore（10）, bottom is provided with radial direction bottom outlet（11）, mesopore（10）Pass through bottom outlet（11）With osculum（3）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720460483.2U CN206987733U (en) | 2017-04-28 | 2017-04-28 | A kind of screw drive rock bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720460483.2U CN206987733U (en) | 2017-04-28 | 2017-04-28 | A kind of screw drive rock bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206987733U true CN206987733U (en) | 2018-02-09 |
Family
ID=61392831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720460483.2U Withdrawn - After Issue CN206987733U (en) | 2017-04-28 | 2017-04-28 | A kind of screw drive rock bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206987733U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108798522A (en) * | 2017-04-28 | 2018-11-13 | 中石化石油工程技术服务有限公司 | A kind of screw drive rock bit |
-
2017
- 2017-04-28 CN CN201720460483.2U patent/CN206987733U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108798522A (en) * | 2017-04-28 | 2018-11-13 | 中石化石油工程技术服务有限公司 | A kind of screw drive rock bit |
| CN108798522B (en) * | 2017-04-28 | 2023-07-21 | 中石化石油工程技术服务有限公司 | Screw driving roller bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180209 Effective date of abandoning: 20230721 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180209 Effective date of abandoning: 20230721 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |