CN205895150U - Diversified PDC drill bit that back row tooth can wholly be dismantled - Google Patents
Diversified PDC drill bit that back row tooth can wholly be dismantled Download PDFInfo
- Publication number
- CN205895150U CN205895150U CN201620776119.2U CN201620776119U CN205895150U CN 205895150 U CN205895150 U CN 205895150U CN 201620776119 U CN201620776119 U CN 201620776119U CN 205895150 U CN205895150 U CN 205895150U
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- CN
- China
- Prior art keywords
- drill bit
- pdc
- wing
- diversified
- pdc cutting
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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- Withdrawn - After Issue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 provides a diversified PDC drill bit that back row tooth can wholly be dismantled, this drill bit is including front -seat and back row PDC cutting teeth, drill bit body, joint, wing, rule footpath, nozzle, hard alloy block and chip groove, the drill bit body is connected with the joint, and its is embedded to have the nozzle, even fixed several wing on it, and the front -seat PDC cutting teeth of brazing on every wing forms the chip groove between two adjacent wings, and back row PDC cutting teeth welds on hard alloy block, and hard alloy block threaded connection is on the wing. It is very soft to meet the stratum, not strong to the drill bit destructiveness, just can lift back row PDC cutting teeth off, adopts single tooth to creep into, improves drilling speed, it is very hard to meet the stratum, and the destructiveness is very strong, just loads onto back row PDC cutting teeth, improves the life of drill bit, has not only widened the adaptability of drill bit to the bad ground, reduces the drilling team greatly to the use cost and the cost of transportation of drill bit, can reduce drilling operation's cycle moreover, practices thrift the drilling cost.
Description
Technical field
This utility model is related to the rotary drilling drill bit of oil, geology, specifically, is that a kind of rear toothrow can integrally be torn open
The diversified pdc drill bit unloading.
Background technology
At present, carry out in drillng operation in fields such as oil, geological prospectings, the situation of stratum mutation often occurs.Such as,
The Liang Koujing of close proximity, in theory, stratum and lithology should be much like, but sometimes exactly can undergo mutation, this
Sample may result in the bit model done well in well suitable for reading, shows extreme difference in Ben Koujing, or even causes certain down-hole accident.
For formation drillability, and the destructive mutation to drill bit, generally we are by increasing or decreasing cloth tooth
Density, increases or decreases double rows of teeth to tackle.But prepare the single teeth drill bit of same model and double teeth drill bit in a bite well,
Drilling team's well-digging cost can be considerably increased, and the shipment and delivery cost of manufacturer.
Content of the invention
Problem to be solved in the utility model be exactly provide a kind of rear toothrow can integral demounting diversified pdc drill bit, energy
Enough greatly reduce the well-digging cost of drilling team, and shipment and delivery cost.Its technical scheme is as follows:
This utility model provide a kind of rear toothrow can integral demounting diversified pdc drill bit, this drill bit includes front-seat pdc and cuts
Cut tooth, drill body, joint, wing, rule footpath, nozzle and chip area, drill body is connected with joint, joint is with drilling rod even
Connect, drill body is embedded with several nozzles, drill body uniformly fixes several wings, soldering is before several on each wing
Row's pdc cutting tooth, forms chip area between two adjacent blades, is rule footpath at the largest outside diameter that connects with joint, its key technology
It is: this drill bit also includes several heel row pdc cutting tooths and several hard alloy blocks that some is set at each wing back side
Screwed hole, heel row pdc cutting tooth is welded on hard alloy blocks, and hard alloy blocks are threaded in knife by soket head cap screw
On the wing.
The magnitude range of described heel row pdc cutting tooth is ф 8mm- ф 16mm.
2-16 heel row pdc cutting tooth is arranged on each wing described.
Drill body is matrix drill bits, alternatively steel body bit.
Wing shape is the straight knife wing, alternatively spiral type wing.
Heel row pdc cutting tooth cloth tooth mode and front-seat pdc cutting tooth can be with track it is also possible to different tracks.
Heel row pdc cutting tooth can be adjusted with the discrepancy in elevation of front-seat pdc cutting tooth.
Compared with prior art, this utility model has the beneficial effect that
1st, this utility model operation strategies are wide, can apply on the drill bit of various sizes it is also possible to apply to core drill
Head.
2nd, adopt drill bit of the present utility model, run into stratum very soft, to drill bit destructiveness by force it is possible to unload heel row
Pdc cutting tooth, using monorow tooth drilling, improves rate of penetration, without in addition again ordering a single teeth drill bit again；Run into
Stratum is very hard, and destructiveness is very strong, just loads onto heel row pdc cutting tooth, improves the service life of drill bit, can greatly reduce drilling team pair
The use cost of drill bit and cost of transportation.
3rd, rear toothrow design of the present utility model is very flexible, realizes multiple cloth tooth sides by preparing multiple hard alloy blocks
Formula, such as: heel row can with front-seat same track, also can different tracks, in front and back the discrepancy in elevation of toothrow also can be adjusted.Avoid changing because little
Dynamic design iterations and manufacture drill bit, reduce drill bit producer and are designed and manufactured as this.
4th, drill bit of the present utility model, it can be Cylinder Gear, circular cone tooth, pointed tooth, bulb tooth etc. that rear toothrow divides from shape, from
It can be pdc diamond compact, hard-metal insert that material divides, and can also be impregnated tooth etc..One body, multiple rear toothrows,
Extremely convenient due to replacing, the rear toothrow of different wings can use dissimilar, is combined into diversified drill bit form,
For diversified stratum.Avoid the design iterations of body.
5th, adopt drill bit of the present utility model, in formation variation frequently, scene can determine which kind of uses according to practical situation
Bit model, has widened the adaptability to bad ground for the drill bit, has greatly improved the success rate of bit type selection.
6th, the cycle of drillng operation can be reduced using drill bit of the present utility model, save drilling cost.
Brief description
Fig. 1 is this utility model structural representation；
Fig. 2 is this utility model heel row pdc cutting tooth and wing connection diagram；
Fig. 3 is this utility model wing close-up schematic view；
Fig. 4 is this utility model heel row pdc cutting toothing one schematic diagram；
Fig. 5 is this utility model heel row pdc cutting toothing two schematic diagram；
Fig. 6 is this utility model heel row pdc cutting toothing three schematic diagram；
Fig. 7 is this utility model heel row pdc cutting toothing four schematic diagram.
In figure reference:
1 front-seat pdc cutting tooth；2 drill bodies；3 joints；4 wings；5 rule footpaths；6 nozzles；7 heel row
Pdc cutting tooth；8 hard alloy blocks；9 soket head cap screws；10 chip areas.
Specific embodiment
Referring to Fig. 1-Fig. 3, this utility model provide a kind of rear toothrow can integral demounting diversified pdc drill bit, this drill bit
Including front-seat pdc cutting tooth 1, drill body 2, joint 3, wing 4, rule footpath 5, nozzle 6 and chip area 10, drill body 2 is permissible
It is matrix drill bits or steel body bit, drill body 2 is connected with joint 3, and joint 4 is connected with drilling rod, drill body 2
It is embedded with several nozzles 6, drill body 2 uniformly fixes several wings 4, drill bit wing 4 shape can be the straight knife wing, alternatively spiral shell
Rotation shape wing, several front-seat pdc cutting tooths 1 of soldering on each wing 4, form chip area 10 between two adjacent blades 4,
Connect with joint 3 at largest outside diameter for rule footpath 5, its key technology is: this drill bit also includes several heel row pdc cutting tooth 7 Hes
Several hard alloy blocks 8, arrange a number of screwed hole at each wing 4 back side, and heel row pdc cutting tooth 7 is welded on hard
On alloy block 8, hard alloy blocks 8 are threaded on wing 4 by soket head cap screw 9.After being adjusted according to practical situation
The size and number of row's pdc cutting tooth 7, the magnitude range of heel row pdc cutting tooth 7 is ф 8mm- ф 16mm, and each wing 4 sets
Put 2-16 heel row pdc cutting tooth 7.Heel row pdc cutting tooth 7 can with front-seat pdc cutting tooth 1 same track, also can different tracks, after
Row's pdc cutting tooth 7 also can be adjusted with the discrepancy in elevation of front-seat pdc cutting tooth 1.Matrix drill bits, in sintering, need to do accordingly
The graphite replacement block of hard alloy blocks 8, after the completion of sintering, takes off graphite replacement block, then after the drill bit wing 4 of matrix drill bits
Row gets out screwed hole on relevant position, finally with soket head cap screw 9, hard alloy blocks 8 is threaded on drill bit wing 4.
The shape of heel row pdc cutting tooth 7 can be pointed tooth as shown in Figure 4, circular cone tooth as shown in Figure 5, as shown in Figure 6
Bulb tooth, Cylinder Gear as shown in Figure 7 etc., the material of heel row pdc cutting tooth 7 can be that pdc diamond compact, hard close
Golden tooth, impregnated tooth etc..One drill body 2, multiple heel row pdc cutting tooths 7, extremely convenient due to replacing, after different wings 4
Row's pdc cutting tooth 7 can use dissimilar, be combined into diversified drill bit form, can adapt to diversifiedly
Layer.
During bit operation, it is very soft to run into stratum, strong to drill bit destructiveness it is possible to unload heel row pdc cutting tooth 7, adopt
With monorow tooth drilling, improve rate of penetration, without in addition again ordering a single teeth drill bit again；Run into stratum very hard, break
Bad property is very strong, just loads onto heel row pdc cutting tooth 7, improves the service life of drill bit.
Claims (10)
1. a kind of rear toothrow can integral demounting diversified pdc drill bit, this drill bit includes front-seat pdc cutting tooth (1), drill body
(2), joint (3), wing (4), rule footpath (5), nozzle (6) and chip area (10), drill body (2) is connected with joint (3), connects
Head (3) is connected with drilling rod, and drill body (2) is embedded with several nozzles (6), and drill body (2) is uniformly fixed several wings
(4), in upper several the front-seat pdc cutting tooths (1) of soldering of each wing (4), between two adjacent blades (4), form chip area
(10), connect with joint (3) at largest outside diameter for rule footpath (5), it is characterized in that: this drill bit also includes the cutting of several heel row pdc
Tooth (7) and several hard alloy blocks (8), arrange a number of screwed hole, heel row pdc cutting tooth at each wing (4) back side
(7) it is welded on hard alloy blocks (8), hard alloy blocks (8) are threaded on wing (4) by soket head cap screw (9).
2. a kind of rear toothrow according to claim 1 can integral demounting diversified pdc drill bit, it is characterized in that: after described
The magnitude range of row's pdc cutting tooth (7) is ф 8mm- ф 16mm.
3. a kind of rear toothrow according to claim 1 can integral demounting diversified pdc drill bit, it is characterized in that: described
Each wing (4) is upper to arrange 2-16 heel row pdc cutting tooth (7).
4. a kind of rear toothrow according to claim 1 can integral demounting diversified pdc drill bit, it is characterized in that: described brill
Head body (2) is matrix drill bits.
5. a kind of rear toothrow according to claim 1 can integral demounting diversified pdc drill bit, it is characterized in that: described brill
Head body (2) is steel body bit.
6. a kind of rear toothrow according to claim 1 can integral demounting diversified pdc drill bit, it is characterized in that: described knife
The wing (4) is shaped as the straight knife wing.
7. a kind of rear toothrow according to claim 1 can integral demounting diversified pdc drill bit, it is characterized in that: described knife
The wing (4) is shaped as spiral type wing.
8. a kind of rear toothrow according to claim 1 can integral demounting diversified pdc drill bit, it is characterized in that: after described
Row's pdc cutting tooth (7) same track with front-seat pdc cutting tooth (1).
9. a kind of rear toothrow according to claim 1 can integral demounting diversified pdc drill bit, it is characterized in that: after described
Row's pdc cutting tooth (7) and front-seat pdc cutting tooth (1) different tracks.
10. a kind of rear toothrow according to claim 1 can integral demounting diversified pdc drill bit, it is characterized in that: after described
Row's pdc cutting tooth (7) can be adjusted with the discrepancy in elevation of described front row pdc cutting tooth (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620776119.2U CN205895150U (en) | 2016-07-21 | 2016-07-21 | Diversified PDC drill bit that back row tooth can wholly be dismantled |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620776119.2U CN205895150U (en) | 2016-07-21 | 2016-07-21 | Diversified PDC drill bit that back row tooth can wholly be dismantled |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205895150U true CN205895150U (en) | 2017-01-18 |
Family
ID=57773599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620776119.2U Withdrawn - After Issue CN205895150U (en) | 2016-07-21 | 2016-07-21 | Diversified PDC drill bit that back row tooth can wholly be dismantled |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205895150U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014267A (en) * | 2016-07-21 | 2016-10-12 | 四川川石金刚石钻头有限公司 | Diversified PDC (polycrystalline diamond compact) drill bit with whole rear row teeth detachable |
| CN107435521A (en) * | 2017-09-21 | 2017-12-05 | 四川川石金刚石钻头有限公司 | A kind of PDC drill bit with fabricated structure |
-
2016
- 2016-07-21 CN CN201620776119.2U patent/CN205895150U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014267A (en) * | 2016-07-21 | 2016-10-12 | 四川川石金刚石钻头有限公司 | Diversified PDC (polycrystalline diamond compact) drill bit with whole rear row teeth detachable |
| CN106014267B (en) * | 2016-07-21 | 2018-01-12 | 四川川石金刚石钻头有限公司 | It is a kind of after toothrow can integral demounting diversified PDC drill bit |
| CN107435521A (en) * | 2017-09-21 | 2017-12-05 | 四川川石金刚石钻头有限公司 | A kind of PDC drill bit with fabricated structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170118 Effective date of abandoning: 20180112 |
|
| AV01 | Patent right actively abandoned |