CN201043442Y - Polycrystalline diamond clad sheet drill bit - Google Patents
Polycrystalline diamond clad sheet drill bit Download PDFInfo
- Publication number
- CN201043442Y CN201043442Y CNU2006200149604U CN200620014960U CN201043442Y CN 201043442 Y CN201043442 Y CN 201043442Y CN U2006200149604 U CNU2006200149604 U CN U2006200149604U CN 200620014960 U CN200620014960 U CN 200620014960U CN 201043442 Y CN201043442 Y CN 201043442Y
- Authority
- CN
- China
- Prior art keywords
- tooth
- polycrystalline diamond
- bit
- diamond compact
- wing
- 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.)
- Expired - Fee Related
Links
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 18
- 239000010432 diamond Substances 0.000 title claims abstract description 18
- 230000036346 tooth eruption Effects 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 8
- 229930091051 Arenine Natural products 0.000 abstract 1
- 239000002131 composite material Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
A polycrystalline diamond compact bit includes a bit body, a nozzle, a blade and a gear, the number of the blade is seven. The total number of tooth on the seven blades is forty five, and the distributed number of the tooth from the first to the seventh blade are nine, four, five, eight, six, seven and six in turn. The rear slant of each tooth is 20 degrees. Each tooth is non-flat joint surface cutting tooth with the diameter of 13 mm. The nozzles include four changeable thread nozzle in large oblique angle and three fixed nozzles. The structure of the bit has faster horizontal well drilling velocity and longer service life.
Description
Technical field
The utility model relates to creeping into of soil layer or rock, relates in particular to drill bit, particularly the cutting teeth of composite polycrystal-diamond on the drill bit.
Background technology
Along with the development of drilling technology, more and more higher to the requirement of drill bit, in oil drilling, generally adopt PDC (composite polycrystal-diamond) drill bit.The PDC drill bit comprises PDC tooth and carcass, and the PDC tooth promptly is welded on this carcass.The structure of PDC drill bit is varied, as the disclosed a kind of New Type of PDC Bit of Chinese patent CN200420041255.4, mainly by wedge angle PDC tooth, cylindrical PDC tooth, wing, nozzle and bit body are formed, on wing, arrange wedge angle PDC tooth and cylindrical PDC tooth regularly, wedge angle PDC tooth is processed with little cutting angle and little side corner, mainly cut groove at rock surface, cylindrical PDC tooth [2] is processed with little cutting angle and big side corner, mainly cut oarse-grained landwaste, the bit cutting tooth arranges that density is rarer relatively than conventional bit, and the wing number of this drill bit is four; The disclosed a kind of dark control Directional PDC Bits of eating of Chinese patent CN200420096604.2 has been installed in PDC composite sheet back and have been eaten dark controll block, reaches the purpose of control PDC composite sheet wedging depth of stratum on the one hand by the proud exposure of eating dark controll block; Eat the teeter of control drill bit in the track that dark controll block can PDC composite sheet in front cuts out on the other hand, reach the purpose of stablizing drill bit, the wing number of this drill bit is six.The conventional drill bit that uses of existing level well mostly adopts six wing structures, exists speed lower, and the life-span causes the problem that single drill bit can not be finished the horizontal segment workload than weak point.
Summary of the invention
The technical problems to be solved in the utility model is to overcome above-mentioned the deficiencies in the prior art, and it is very fast to propose a kind of horizontal drilling speed, the PDC drill bit that the life-span is long.
The technical scheme in the invention for solving the above technical problem is, manufactures and designs a kind of polycrystalline diamond compact bit, comprises bit body, nozzle, and wing and tooth, the number of described wing are seven.
The total number of the tooth on seven wings is 45, and the distribution number of tooth on first to the 7th wing in turn is nine, four, five, eight, six, seven and six.
Each tooth is according to the distribution of from the close-by examples to those far off sorting of the distance in the range distribution center of circle.
Said structure by increasing a wing, can increase cloth number of teeth amount, thus the application life of improving whole drill bit.
The back rake angle of each tooth is 20 degree.Each tooth is the non-flat bonding surface cutting teeth of diameter 13mm.
The structure arrangement of this tooth is to consider that back rake angle is big more, and the situation that bit speed is slow more by the design of this less back rake angle, can improve rate of penetration.
Described nozzle comprises four replaceable threaded nozzle of big rake angle, also comprises three fixed nozzles.
This structure of nozzle arrangement has strengthened the hydraulics of drill body, helps improving drilling speed.
Compare with prior art, polycrystalline diamond compact bit of the present utility model, horizontal drilling speed is very fast, and the life-span is longer.
Description of drawings
Fig. 1 is a polycrystalline diamond compact bit embodiment schematic diagram of the present utility model.
The specific embodiment
Be described in further detail below in conjunction with the most preferred embodiment shown in each accompanying drawing.
As shown in Figure 1, polycrystalline diamond compact bit embodiment of the present utility model comprises bit body 100, nozzle (not shown), wing 101 to 107 and tooth 1 to 45.
Tooth from the close-by examples to those far off sorts according to the distance in the range distribution center of circle, is the 1st, 3,5,8,14,21,28,35,39 teeth on first wing 101 in the distribution situation on each wing; The 20th, 27,34,40 teeth on second wing 102; The 13rd, 19,26,33,41 teeth on the 3rd wing 103; The 2nd, 4,7,12,18,25,32,42 teeth on the four blade wing 104; The 11st, 17,24,31,38,43 teeth on the 5th wing 105; The 6th, 10,16,23,30,37,44 teeth on the 6th wing 106; With the 9th, 15,22,29,36,45 teeth on the 7th wing 107.
Adopt one of polycrystalline diamond compact bit embodiment of the present utility model to have particular application as, in an actual well drilled engineering, in identical well section, G535 type bit drills as a comparison 22 day time, average drilling depth is 1.06 meters/hour, and adopt the present embodiment drill bit, only used 7 day time, and this well section stratum densification, abrasiveness are very strong.This contrast shows the excellent properties of the utility model structure drill bit.
The most preferred embodiment of the above is intended to specify thinking of the present utility model: seven wings improve the life-span to increase cloth number of teeth order, and little back rake angle one increases drilling speed.The enforcement of the utility model is not limited to the disclosed mode of above most preferred embodiment, and is all based on above-mentioned mentality of designing, simply deduces and replace, and the concrete polycrystalline diamond compact bit that obtains all belongs to enforcement of the present utility model.
Claims (7)
1. a polycrystalline diamond compact bit comprises bit body, nozzle, and wing and tooth is characterized in that: the number of described wing is seven.
2. polycrystalline diamond compact bit as claimed in claim 1 is characterized in that: the total number of the tooth on described seven wings is 45, and the distribution number of tooth on first to the 7th wing in turn is nine, four, five, eight, six, seven and six.
3. polycrystalline diamond compact bit as claimed in claim 2 is characterized in that: described each tooth is according to the distribution of from the close-by examples to those far off sorting of the distance in the range distribution center of circle.
4. as the arbitrary described polycrystalline diamond compact bit of claim 1 to 3, it is characterized in that: the back rake angle of described each tooth is 20 degree.
5. polycrystalline diamond compact bit as claimed in claim 4 is characterized in that: described each tooth is the non-flat bonding surface cutting teeth of diameter 13mm.
6. as the arbitrary described polycrystalline diamond compact bit of claim 1 to 3, it is characterized in that: described nozzle comprises four replaceable threaded nozzle of big rake angle.
7. polycrystalline diamond compact bit as claimed in claim 6 is characterized in that: described nozzle also comprises three fixed nozzles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200149604U CN201043442Y (en) | 2006-09-28 | 2006-09-28 | Polycrystalline diamond clad sheet drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200149604U CN201043442Y (en) | 2006-09-28 | 2006-09-28 | Polycrystalline diamond clad sheet drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201043442Y true CN201043442Y (en) | 2008-04-02 |
Family
ID=39258336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200149604U Expired - Fee Related CN201043442Y (en) | 2006-09-28 | 2006-09-28 | Polycrystalline diamond clad sheet drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201043442Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409980A (en) * | 2011-12-22 | 2012-04-11 | 河南神龙石油钻具有限公司 | Blade type PDC (Polycrystalline Diamond Compact) drill bit |
| CN102482918A (en) * | 2009-09-04 | 2012-05-30 | 里奥尼德·鲍里索维奇·杜勃罗留波夫 | Drill bit |
| CN102084082B (en) * | 2008-04-23 | 2015-07-29 | 沙特阿拉伯石油公司 | Polycrystalline diamond compact bit insert design and arrangement of nozzles |
-
2006
- 2006-09-28 CN CNU2006200149604U patent/CN201043442Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102084082B (en) * | 2008-04-23 | 2015-07-29 | 沙特阿拉伯石油公司 | Polycrystalline diamond compact bit insert design and arrangement of nozzles |
| CN102482918A (en) * | 2009-09-04 | 2012-05-30 | 里奥尼德·鲍里索维奇·杜勃罗留波夫 | Drill bit |
| CN102409980A (en) * | 2011-12-22 | 2012-04-11 | 河南神龙石油钻具有限公司 | Blade type PDC (Polycrystalline Diamond Compact) drill bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |