CN106014267A - Diversified PDC (polycrystalline diamond compact) drill bit with whole rear row teeth detachable - Google Patents
Diversified PDC (polycrystalline diamond compact) drill bit with whole rear row teeth detachable Download PDFInfo
- Publication number
- CN106014267A CN106014267A CN201610579685.9A CN201610579685A CN106014267A CN 106014267 A CN106014267 A CN 106014267A CN 201610579685 A CN201610579685 A CN 201610579685A CN 106014267 A CN106014267 A CN 106014267A
- Authority
- CN
- China
- Prior art keywords
- drill bit
- pdc
- diversified
- wing
- pdc cutting
- Prior art date
- 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.)
- Granted
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Classifications
-
- 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
- E21B10/00—Drill bits
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
- E21B10/627—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable with plural detachable cutting elements
- E21B10/633—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable with plural detachable cutting elements independently detachable
-
- 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
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
-
- 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
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
Abstract
The invention provides a diversified PDC (polycrystalline diamond compact) drill bit with the whole rear row teeth detachable. The drill bit comprises front row PDC cutting teeth, rear row PDC cutting teeth, a drill bit body, a joint, blades, a gauge, a nozzle, a hard alloy block and chip grooves, wherein the drill bit body is connected with the joint, the nozzle is embedded in the drill bit body, a plurality of blades are uniformly fixed on the drill bit body, the front row PDC cutting teeth are brazed on each blade, each chip groove is formed between every two adjacent blades, the rear row PDC cutting teeth are welded on the hard alloy block, and the hard alloy block is connected with the blades through screw threads. When stratum is soft and does not have strong destructive effect on the drill bit, the rear row PDC cutting teeth can be detached and single row teeth drilling is adopted to improve the drilling rate; and when the stratum is hard and has strong destructive effect, the rear row PDC cutting teeth are mounted, so that the service life of the drill bit is prolonged, adaptability of the drill bit to complex stratums is improved, usage cost and transportation cost of drilling crew on the drill bit are greatly reduced, a drilling operation period can be shortened and the drilling cost can be saved.
Description
Technical field
The present invention relates to the rotary drilling drill bit of oil, geology, specifically, be that toothrow can be whole after one
The diversified PDC drill bit of body dismounting.
Background technology
At present, in the field such as oil, geological prospecting carries out drillng operation, the feelings that stratum suddenlys change often occur
Condition.Such as, the Liang Koujing of close proximity, in theory, stratum and lithology should be much like, but have
Time can undergo mutation exactly, so may result in the bit model done well at well suitable for reading, at Ben Koujing
Performance extreme difference, even causes certain down-hole accident.
For formation drillability, and sudden change destructive to drill bit, generally we are to be added deduct by increasing
Few cutter set density, is increased or decreased double rows of teeth and tackles.But the monorow tooth of same model is prepared at a bite well
Drill bit and double rows of teeth drill bit, can considerably increase drilling team's well-digging cost, and the shipment and delivery cost of manufacturer.
Summary of the invention
The problem to be solved in the present invention be just to provide a kind of rear toothrow can the diversified PDC drill bit of integral demounting,
The well-digging cost of drilling team, and shipment and delivery cost can be greatly reduced.Its technical scheme is as follows:
The present invention provide a kind of rear toothrow can the diversified PDC drill bit of integral demounting, this drill bit includes front row
PDC cutting tooth, drill body, joint, wing, rule footpath, nozzle and chip area, drill body and joint
Being connected, joint is connected with drilling rod, and drill body is embedded with several nozzle, uniform fixed number on drill body
Individual wing, on each wing, several front-seat PDC of soldering cut tooth, the row of being formed between two adjacent blades
Bits groove, for rule footpath at the largest outside diameter that connects with joint, its key technology is: after this drill bit also includes several
Row's PDC cutting tooth and several hard alloy blocks, arrange a number of screwed hole at each wing back side, after
Row's PDC cutting tooth is welded on hard alloy blocks, and hard alloy blocks is threaded in cutter by soket head cap screw
On the wing.
The magnitude range of described heel row PDC cutting tooth is Ф 8mm-Ф 16mm.
Described each wing arranges 2-16 heel row PDC cutting tooth.
Drill body is matrix drill bits, it is possible to for steel body bit.
Wing shape is the straight knife wing, it is possible to for spiral type wing.
Heel row PDC cutting tooth cloth tooth mode and front-seat PDC cutting tooth can same tracks, it is also possible to different tracks.
Heel row PDC cutting tooth can regulate with the discrepancy in elevation of front-seat PDC cutting tooth.
Compared with prior art, the invention have the advantages that:
1, operation strategies of the present invention is wide, can apply on the drill bit of various sizes, it is also possible to apply to take
Core drill bit.
2, use the drill bit of the present invention, run into stratum the softest, the strongest to drill bit destructiveness, it is possible to unload
Heel row PDC cutting tooth, uses monorow tooth to creep into, improves rate of penetration, without additionally ordering one the most again
Monorow tooth drill bit；Running into stratum very hard, destructiveness is very strong, just loads onto heel row PDC cutting tooth, improves and bore
The service life of head, it is possible to be greatly reduced drilling team to the use cost of drill bit and cost of transportation.
3, the rear toothrow design of the present invention is very flexible, realizes multiple cloth tooth by preparing multiple hard alloy blocks
Mode, such as: heel row can track same with front row, it is possible to different tracks, front and back the discrepancy in elevation of toothrow also can be carried out
Regulation.Avoid because of little change design iterations and manufacture drill bit, reducing drill bit producer and be designed and manufactured as this.
4, the drill bit of the present invention, it can be Cylinder Gear, circular cone tooth, pointed tooth, bulb that rear toothrow divides from shape
Teeth etc., dividing from material can be PDC diamond compact, hard-metal insert, it is also possible to be impregnated tooth etc..
One body, multiple rear toothrow, the most convenient owing to replacing, the rear toothrow of different wings can use difference
Type, is combined into diversified drill bit form, for diversified stratum.Avoid the repetition of body
Design.
5, using the drill bit of the present invention, frequent in formation variation, scene can determine according to practical situation
Use which kind of bit model, widened the drill bit adaptation ability to bad ground, be greatly improved bit type selection
Success rate.
6, use the drill bit of the present invention can reduce the cycle of drillng operation, save drilling cost.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram；
Fig. 2 is heel row PDC of the present invention cutting tooth and wing connection diagram；
Fig. 3 is wing close-up schematic view of the present invention；
Fig. 4 is that heel row PDC of the present invention cuts toothing one schematic diagram；
Fig. 5 is that heel row PDC of the present invention cuts toothing two schematic diagram；
Fig. 6 is that heel row PDC of the present invention cuts toothing three schematic diagram；
Fig. 7 is that heel row PDC of the present invention cuts toothing four schematic diagram.
Reference in figure:
1 front-seat PDC cuts tooth；2 drill bodies；3 joints；4 wings；5 rule footpaths；6 sprays
Mouth；7 heel row PDC cutting teeth；8 hard alloy blocks；9 soket head cap screws；10 chip areas.
Detailed description of the invention
See Fig. 1-Fig. 3, the present invention provide a kind of rear toothrow can the diversified PDC drill bit of integral demounting, should
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 can be matrix drill bits, it is also possible to be steel body bit, drill body 2 with connect
3 are connected, and joint 4 is connected with drilling rod, and drill body 2 is embedded with several nozzle 6, drill body 2
The most fixing upper several wings 4, drill bit wing 4 shape can be the straight knife wing, it is possible to for spiral type wing,
On each wing 4, several front-seat PDC of soldering cut tooth 1, form chip area between two adjacent blades 4
10, for rule footpath 5 at the largest outside diameter that connects with joint 3, its key technology is: this drill bit also includes several
Heel row PDC cutting tooth 7 and several hard alloy blocks 8, arrange a number of spiral shell at each wing 4 back side
Pit, heel row PDC cutting tooth 7 is welded on hard alloy blocks 8, and hard alloy blocks 8 is by interior hexagonal spiral shell
Nail 9 is threaded on wing 4.According to practical situation can regulate heel row PDC cutting tooth 7 size and
Quantity, the magnitude range of heel row PDC cutting tooth 7 is Ф 8mm-Ф 16mm, and each wing 4 arranges 2-16
Individual heel row PDC cutting tooth 7.Heel row PDC cutting tooth 7 can cut the same track of tooth 1 with front-seat PDC, it is possible to
Different tracks, heel row PDC cutting tooth 7 also can be adjusted with the discrepancy in elevation of front-seat PDC cutting tooth 1.Carcass
Drill bit, when sintering, needs to do the graphite replacement block of corresponding hard alloy blocks 8, after having sintered, takes off
Graphite replacement block, then gets out screwed hole, finally on the drill bit wing 4 heel row relevant position of matrix drill bits
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,
Bulb tooth as shown in Figure 6, Cylinder Gear etc. as shown in Figure 7, the material of heel row PDC cutting tooth 7 is permissible
It is PDC diamond compact, hard-metal insert, impregnated tooth etc..One drill body 2, multiple heel row PDC
Cutting tooth 7, the most convenient owing to replacing, the heel row PDC cutting tooth 7 of different wings 4 can use difference
Type, is combined into diversified drill bit form, it is possible to adapt to diversified stratum.
During bit operation, run into stratum the softest, the strongest to drill bit destructiveness, it is possible to unload heel row PDC and cut
Cut tooth 7, use monorow tooth to creep into, improve rate of penetration, without additionally ordering a monorow tooth the most again
Drill bit；Running into stratum very hard, destructiveness is very strong, just loads onto heel row PDC cutting tooth 7, improves making of drill bit
Use the life-span.
Claims (10)
1. after toothrow can the diversified PDC drill bit of integral demounting, this drill bit includes that front-seat PDC cuts
Cut 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), and joint (3) is connected with drilling rod,
Drill body (2) is embedded with several nozzle (6), drill body (2) the most fixing upper several wings
(4), at several front-seat PDC cutting tooth (1) of the upper soldering of each wing (4), two adjacent blades
(4) chip area (10) is formed between, for rule footpath (5) at the largest outside diameter that connects with joint (3), its
Feature is: this drill bit also includes several heel row PDC cutting tooth (7) and several hard alloy blocks (8),
A number of screwed hole, heel row PDC cutting tooth (7) welding are set at each wing (4) back side
On hard alloy blocks (8), hard alloy blocks (8) is threaded in by soket head cap screw (9)
On wing (4).
A kind of rear toothrow the most according to claim 1 can the diversified PDC drill bit of integral demounting,
It is characterized in that: the magnitude range of described heel row PDC cutting tooth (7) is Ф 8mm-Ф 16mm.
A kind of rear toothrow the most according to claim 1 can the diversified PDC drill bit of integral demounting,
It is characterized in that: 2-16 heel row PDC cutting tooth (7) is set on described each wing (4).
A kind of rear toothrow the most according to claim 1 can the diversified PDC drill bit of integral demounting,
It is characterized in that: described drill body (2) is matrix drill bits.
A kind of rear toothrow the most according to claim 1 can the diversified PDC drill bit of integral demounting,
It is characterized in that: described drill body (2) is steel body bit.
A kind of rear toothrow the most according to claim 1 can the diversified PDC drill bit of integral demounting,
It is characterized in that: described wing (4) is shaped as the straight knife wing.
A kind of rear toothrow the most according to claim 1 can the diversified PDC drill bit of integral demounting,
It is characterized in that: described wing (4) is shaped as spiral type wing.
A kind of rear toothrow the most according to claim 1 can the diversified PDC drill bit of integral demounting,
It is characterized in that: described heel row PDC cutting tooth (7) cuts tooth (1) same track with front-seat PDC.
A kind of rear toothrow the most according to claim 1 can the diversified PDC drill bit of integral demounting,
It is characterized in that: described heel row PDC cutting tooth (7) cuts tooth (1) different tracks with front-seat PDC.
A kind of rear toothrow the most according to claim 1 can the diversified PDC drill bit of integral demounting,
It is characterized in that: described heel row PDC cutting tooth (7) cuts the discrepancy in elevation of tooth (1) with described front-seat PDC
Can regulate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610579685.9A CN106014267B (en) | 2016-07-21 | 2016-07-21 | It is a kind of after toothrow can integral demounting diversified PDC drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610579685.9A CN106014267B (en) | 2016-07-21 | 2016-07-21 | It is a kind of after toothrow can integral demounting diversified PDC drill bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106014267A true CN106014267A (en) | 2016-10-12 |
| CN106014267B CN106014267B (en) | 2018-01-12 |
Family
ID=57116319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610579685.9A Active CN106014267B (en) | 2016-07-21 | 2016-07-21 | It is a kind of after toothrow can integral demounting diversified PDC drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106014267B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939298A (en) * | 2018-01-09 | 2018-04-20 | 西南石油大学 | Can detachable type PDC drill bit |
| CN107975343A (en) * | 2018-01-09 | 2018-05-01 | 西南石油大学 | Can detachable type PDC re-drill bits |
| CN110500061A (en) * | 2019-09-09 | 2019-11-26 | 中国石油大学(华东) | A kind of oil well device |
| CN111963065A (en) * | 2020-10-20 | 2020-11-20 | 胜利油田固邦石油装备有限责任公司 | PDC drill bit for directional drilling |
| CN117432340A (en) * | 2023-12-21 | 2024-01-23 | 西南石油大学 | PDC drill bit with high specific pressure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101377119A (en) * | 2007-08-27 | 2009-03-04 | 大港油田集团有限责任公司 | PDC drill |
| US8991523B2 (en) * | 2010-06-03 | 2015-03-31 | Smith International, Inc. | Rolling cutter assembled directly to the bit pockets |
| CN204402366U (en) * | 2014-12-26 | 2015-06-17 | 山东博发动力机械有限公司 | Removably drill bit |
| CN204476293U (en) * | 2015-01-29 | 2015-07-15 | 谢宽艳 | A kind of four wing PDC drill bits |
| US20160097237A1 (en) * | 2014-10-06 | 2016-04-07 | Baker Hughes Incorporated | Drill bit with extendable gauge pads |
| CN205895150U (en) * | 2016-07-21 | 2017-01-18 | 四川川石金刚石钻头有限公司 | Diversified PDC drill bit that back row tooth can wholly be dismantled |
-
2016
- 2016-07-21 CN CN201610579685.9A patent/CN106014267B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101377119A (en) * | 2007-08-27 | 2009-03-04 | 大港油田集团有限责任公司 | PDC drill |
| US8991523B2 (en) * | 2010-06-03 | 2015-03-31 | Smith International, Inc. | Rolling cutter assembled directly to the bit pockets |
| US20160097237A1 (en) * | 2014-10-06 | 2016-04-07 | Baker Hughes Incorporated | Drill bit with extendable gauge pads |
| CN204402366U (en) * | 2014-12-26 | 2015-06-17 | 山东博发动力机械有限公司 | Removably drill bit |
| CN204476293U (en) * | 2015-01-29 | 2015-07-15 | 谢宽艳 | A kind of four wing PDC drill bits |
| CN205895150U (en) * | 2016-07-21 | 2017-01-18 | 四川川石金刚石钻头有限公司 | Diversified PDC drill bit that back row tooth can wholly be dismantled |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939298A (en) * | 2018-01-09 | 2018-04-20 | 西南石油大学 | Can detachable type PDC drill bit |
| CN107975343A (en) * | 2018-01-09 | 2018-05-01 | 西南石油大学 | Can detachable type PDC re-drill bits |
| CN110500061A (en) * | 2019-09-09 | 2019-11-26 | 中国石油大学(华东) | A kind of oil well device |
| CN111963065A (en) * | 2020-10-20 | 2020-11-20 | 胜利油田固邦石油装备有限责任公司 | PDC drill bit for directional drilling |
| CN111963065B (en) * | 2020-10-20 | 2020-12-25 | 胜利油田固邦石油装备有限责任公司 | PDC drill bit for directional drilling |
| CN117432340A (en) * | 2023-12-21 | 2024-01-23 | 西南石油大学 | PDC drill bit with high specific pressure |
| CN117432340B (en) * | 2023-12-21 | 2024-03-22 | 西南石油大学 | PDC drill bit with high specific pressure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106014267B (en) | 2018-01-12 |
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