CN106014265A - Anti-whirling reverse rear perforation tooth drill bit - Google Patents
Anti-whirling reverse rear perforation tooth drill bit Download PDFInfo
- Publication number
- CN106014265A CN106014265A CN201610578929.1A CN201610578929A CN106014265A CN 106014265 A CN106014265 A CN 106014265A CN 201610578929 A CN201610578929 A CN 201610578929A CN 106014265 A CN106014265 A CN 106014265A
- Authority
- CN
- China
- Prior art keywords
- drill bit
- toothrow
- convolution
- reverse
- teeth
- 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
Links
- 238000005553 drilling Methods 0.000 claims abstract description 17
- 238000005476 soldering Methods 0.000 claims description 3
- 239000011435 rock Substances 0.000 abstract description 6
- 230000036346 tooth eruption Effects 0.000 abstract 2
- 230000002411 adverse Effects 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000003319 supportive effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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 OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides an anti-whirling reverse rear perforation tooth drill bit which comprises front-row PDC cutting teeth, a drill bit body, a connector, blades, gauge diameters, nozzles and clip grooves, wherein the drill bit body is connected with the connector; the connector is connected with the drill rod; a plurality of nozzles are embedded into the drill bit body; a plurality of blades are uniformly formed on the drill bit body; a plurality of PDC teeth are welded on each blade; a clip groove is formed between every two adjacent blades; the gauge diameters are arranged at the largest outer diameters of the connecting parts of the clip grooves and the connector; a certain number of reverse rear perforation teeth are arranged on the back side of each blade; the size and the number of the reverse rear perforation teeth are adjusted according to practical situations. When a deep well and a hard ground well are drilled, a certain number of the reverse rear perforation teeth are added to the back of each blade, and reverse cutting teeth are added, so that drill bit convolution can be effectively reduced, the adverse convolution force harmful to well drilling can be reduced, the force can be converted into cutting force beneficial to well drilling, rock breakage can be facilitated, the mechanical drilling speed of the drill bit can be increased, the well drilling speed can be increased, and the well drilling cycle can be shortened.
Description
Technical field
The present invention relates to the rotary drilling drill bit of oil, geology, particularly to creeping into of deep-well and hard formation
Drill bit, specifically, is a kind of anti-convolution reverse heel row teeth drill bit.
Background technology
At present, PDC tooth is used (to be called for short PDC as the rotary drilling drill bit of cutting tooth in the field such as oil, geology
Drill bit) the most extensive.The advantages such as it is high that PDC drill bit has rate of penetration, footage per bit life-span length.Due at deep-well
With in hard formation drilling process, drilling rod is oversize, is distorted, and when boring chance hard formation, drill bit to circle round,
Directly reduce the attack of drill bit, and drill bit may be damaged, thus premature breakdown drill bit, seriously
Affect bit speed.In order to solve this difficult problem, Ge great drill bit company has attempted a lot of method, turns round including using
Power impacter, anti-convolution gauge etc.；Coordinate torsion impact device to use, allow drill bit high speed rotating back and forth or axially
Stretching back and forth, its purpose reduces bit convolution exactly, thus improves bit speed, shortcoming be exactly instrument cost too
Height, and technical the strongest, it is impossible to universal；Anti-convolution gage protecting bit design effect is inconspicuous.Drill bit returns now
Rotation problem is exactly the difficult problem that PDC drill bit generally exists and do not solves.
Summary of the invention
The problem to be solved in the present invention is aiming at the difficult problem that above-mentioned prior art exists, it is provided that a kind of novel brill
Header structure, solves bit convolution problem.Its technical scheme is as follows:
The present invention provides a kind of anti-convolution reverse heel row teeth drill bit, and this drill bit includes that front-seat PDC cuts tooth, drill bit
Body, joint, wing, rule footpath, nozzle and chip area, drill body is connected with joint, joint and drilling rod
Connecting, drill body is embedded with several nozzle, and the most fixing several wings on drill body, on each wing
Several front-seat PDC of soldering cut teeth, form chip area between two adjacent blades, and the external diameter that connects with joint is
General goal is rule footpath, and its key technology is to add rear a number of toothrow at each wing back side.
The magnitude range of rear described toothrow is Ф 8mm-Ф 16mm.
Rear described toothrow and corresponding front-seat PDC cut the same radius of tooth, the two distance 5-10mm.
The elevation angle of rear described toothrow is 10 °-30 °.
Described each wing arranges 2-16 toothrow rear.
Compared with prior art, the invention have the advantages that:
1, in deep-well and hard formation drilling well, after routine, one of the most front toothrow of toothrow design is supplemented, currently
When toothrow damages, rear toothrow participates in cutting, is the same function with front toothrow.The present invention is at each wing behind
Add rear a number of toothrow, add reverse cutting tooth, the cutting direction of rear toothrow and front row
The cutting direction of tooth is contrary, as long as there being bit convolution situation to occur, rear toothrow just participates in work, can be effective
Reduce bit convolution, it is possible to reduce the reverse rotating force harmful to drilling well, and be converted into the cutting useful to drilling well
Power, helps broken rock, improves drill bit rate of penetration, thus improve bit speed, save drilling period.
2, the present invention reversely after toothrow and corresponding front-seat PDC cut the same radius of tooth, the two distance 5-10mm,
Simple in construction, after guaranteeing fully to place reversely in the case of toothrow so that it is take up room and minimize,
So that the compact conformation of the present invention, it is not result in that wing is internal hollow, does not affect wing intensity, and energy
Enough in the design of the double rows of teeth in the same direction of existing drill bit producer, carry out little change, it is to avoid weigh because of little change
Design and manufacture whole drill bit again, reduce drill bit producer and be designed and manufactured as this, thus low cost of the present invention.
3, the elevation angle of the present invention reversely rear toothrow is 10 °-30 °, rear toothrow cutting at this angular range
Power of cutting is big, and anti-boomerang effect is best, it is ensured that the attack of drill bit, it is ensured that the high rate of penetration of drill bit, extends and bores
In the head drilling depth life-span, improve bit speed.
4, present invention design is the most flexible, it is possible to come according to the practical situation of deep-well and the stratum of hard formation and lithology
The size and number of toothrow after regulation reversely, the magnitude range of rear toothrow is Ф 8mm-Ф 16mm, each brill
2-16 toothrow rear is set on head wing, to increase reverse cutting force to greatest extent, reduces bit convolution,
Ensure the attack of drill bit, reduce and drill bit is damaged, thus protect drill bit, improve bit speed.
Accompanying drawing explanation
Fig. 1 is drill body of the present invention and joint connection diagram；
Fig. 2 is present configuration schematic diagram；
Fig. 3 is front row PDC of the present invention cutting tooth and rear toothrow cutting state figure.
Reference in figure:
1 front-seat PDC cuts tooth；2 drill bodies；3 joints；4 wings；5 rule footpaths；6 is reverse
Rear toothrow；7 nozzles；8 chip areas；9 rocks.
Detailed description of the invention
Seeing Fig. 1-Fig. 2, the present invention provides a kind of anti-convolution reverse heel row teeth drill bit, and this drill bit includes front-seat PDC
Cutting tooth 1, drill body 2, joint 3, wing 4, rule footpath 5, nozzle 7 and chip area 8, drill body 2
Being connected with joint 3, joint 3 is connected with drilling rod, and drill body 2 is embedded with several nozzle 7, drill body
The most fixing several wings 4 on 2, on each wing 4, several front-seat PDC of soldering cut tooth 1, two phases
Forming chip area 8 between adjacent wing 4, for rule footpath 5 at the largest outside diameter that connects with joint 3, its key technology is
Add rear a number of toothrow 6 at each drill bit wing 4 back side, can regulate reversely according to practical situation
The size and number of rear toothrow 6, the magnitude range of rear toothrow 6 is Ф 8mm-Ф 16mm, each bit wing
2-16 toothrow 6 rear is set on the wing 4.After reversely, toothrow 6 and corresponding front-seat PDC cutting tooth 1 are with half
Footpath, the two distance 5-10mm, the elevation angle of rear toothrow 6 is 10 °-30 °.
When drill bit normally works, front-seat PDC cuts tooth 1 rock cutting 9, and rear toothrow 6 plays a supportive role,
Making bit operation steady, when deep-well or hard formation creep into, drill bit is whirled up, and rotates backward, the most instead
Toothrow 6 rock cutting 9 backward, produces resistance, stops drill bit reversion, eliminates bit convolution state, and borrow
Help rotating force rock cutting 9.
The direction of arrow in Fig. 3 is bit cutting direction.
Claims (5)
1. an anti-convolution reverse heel row teeth drill bit, this drill bit includes front-seat PDC cutting tooth (1), bores
Head body (2), joint (3), wing (4), rule footpath (5), nozzle (7) and chip area (8),
Drill body (2) is connected with joint (3), and joint (3) is connected with drilling rod, drill body (2)
Being embedded with several nozzle (7), drill body (2) the most fixing upper several wings (4), at each cutter
Several front-seat PDC cutting tooth (1) of the upper soldering of the wing (4), are formed between two adjacent blades (4)
Chip area (8), for rule footpath (5) at the largest outside diameter that connects with joint (3), is characterized in that: each
Wing (4) back side adds rear a number of toothrow (6).
The anti-convolution of one the most according to claim 1 reverse heel row teeth drill bit, is characterized in that: institute
After stating reversely, the magnitude range of toothrow (6) is Ф 8mm-Ф 16mm.
The anti-convolution of one the most according to claim 1 reverse heel row teeth drill bit, is characterized in that: institute
After stating reversely, toothrow (6) and corresponding front-seat PDC cut tooth (1) same to radius, the two distance 5-10mm.
The anti-convolution of one the most according to claim 1 reverse heel row teeth drill bit, is characterized in that: institute
After stating reversely, the elevation angle of toothrow (6) is 10 °-30 °.
The anti-convolution of one the most according to claim 1 reverse heel row teeth drill bit, is characterized in that:
2-16 toothrow (6) rear is set on described each wing (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610578929.1A CN106014265B (en) | 2016-07-21 | 2016-07-21 | A kind of anti-reverse heel row teeth drill bit of convolution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610578929.1A CN106014265B (en) | 2016-07-21 | 2016-07-21 | A kind of anti-reverse heel row teeth drill bit of convolution |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106014265A true CN106014265A (en) | 2016-10-12 |
| CN106014265B CN106014265B (en) | 2018-01-12 |
Family
ID=57116865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610578929.1A Active CN106014265B (en) | 2016-07-21 | 2016-07-21 | A kind of anti-reverse heel row teeth drill bit of convolution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106014265B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117514016A (en) * | 2024-01-03 | 2024-02-06 | 西南石油大学 | PDC drill bit with reversely-mounted teeth |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101663119A (en) * | 2007-04-02 | 2010-03-03 | 犹尼达克株式会社 | Deep hole cutting apparatus |
| CN202970487U (en) * | 2012-02-26 | 2013-06-05 | 袁淑英 | Long gauge bidirectional-drilling PDC drill bit |
| US20150233186A1 (en) * | 2014-02-20 | 2015-08-20 | Ulterra Drilling Technologies, L.P. | Drill bit |
| CN205047162U (en) * | 2015-10-14 | 2016-02-24 | 张满义 | Oil drill bit |
| CN105649539A (en) * | 2016-04-05 | 2016-06-08 | 武汉亿斯达工具有限公司 | Combined cutting PDC (polycrystalline diamond compact) bit provided with breaking hammer |
| CN205895146U (en) * | 2016-07-21 | 2017-01-18 | 四川川石金刚石钻头有限公司 | Anti reverse back row tooth drill bit that circles round |
-
2016
- 2016-07-21 CN CN201610578929.1A patent/CN106014265B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101663119A (en) * | 2007-04-02 | 2010-03-03 | 犹尼达克株式会社 | Deep hole cutting apparatus |
| CN202970487U (en) * | 2012-02-26 | 2013-06-05 | 袁淑英 | Long gauge bidirectional-drilling PDC drill bit |
| US20150233186A1 (en) * | 2014-02-20 | 2015-08-20 | Ulterra Drilling Technologies, L.P. | Drill bit |
| CN205047162U (en) * | 2015-10-14 | 2016-02-24 | 张满义 | Oil drill bit |
| CN105649539A (en) * | 2016-04-05 | 2016-06-08 | 武汉亿斯达工具有限公司 | Combined cutting PDC (polycrystalline diamond compact) bit provided with breaking hammer |
| CN205895146U (en) * | 2016-07-21 | 2017-01-18 | 四川川石金刚石钻头有限公司 | Anti reverse back row tooth drill bit that circles round |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117514016A (en) * | 2024-01-03 | 2024-02-06 | 西南石油大学 | PDC drill bit with reversely-mounted teeth |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106014265B (en) | 2018-01-12 |
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