CN201650129U - Steel PDC drill - Google Patents
Steel PDC drill Download PDFInfo
- Publication number
- CN201650129U CN201650129U CN201020151961XU CN201020151961U CN201650129U CN 201650129 U CN201650129 U CN 201650129U CN 201020151961X U CN201020151961X U CN 201020151961XU CN 201020151961 U CN201020151961 U CN 201020151961U CN 201650129 U CN201650129 U CN 201650129U
- Authority
- CN
- China
- Prior art keywords
- wing
- tooth
- drill bit
- pdc drill
- distribution
- 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 - Lifetime
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- 238000005553 drilling Methods 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000002131 composite material Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000036346 tooth eruption Effects 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
Images
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- Earth Drilling (AREA)
Abstract
The utility model discloses a steel PDC drill, which comprises a drill body. The crown at the front end of the drill body is provided with 5 blades which are fixedly provided with 33 teeth. The 5 blades are provided with 9, 5, 6, 8 and 5 teeth in sequence. The five blades are distributed around the centre of the crown of the drill body with the distribution angles of 0, 79, 155, 229 and 295 degrees respectively. In the utility model, the distribution angles of the blades and the distribution of the teeth on the blades are adjusted based on the traditional drill structure, therefore, the service life of the whole drill is prolonged and the drilling speed is increased.
Description
Technical field
The utility model relates to the drill bit of using in a kind of oil and gas well drilling engineering.
Background technology
In oil drilling, generally adopt PDC (composite polycrystal-diamond) drill bit.The PDC drill bit is divided into two kinds of matrix-type and steel body formulas according to the matrix material difference, and steel body bit is processed into by lathe milling machine with structural alloy steel, matrix drill bits with casting tungsten carbide powder copper powder nickel powder by a certain percentage high temperature sintering become.The PDC drill bit of prior art, the setting of the distribution of tooth and unreasonable on the distribution angle of wing and the wing, service behaviour is poor, the PDC composite sheet is easy to generate cracked and over worn phenomenon, cause drill bit to damage in advance, and drilling speed is lower, effect is bad, influences drillng operation.
The utility model content
The purpose of this utility model is, proposes a kind of New Type of PDC Bit, and the distribution that overcomes tooth on the distribution angle of existing drill bit wing and the wing is provided with irrational deficiency.
The technical solution adopted in the utility model is as follows:
A kind of steel body PDC drill bit comprises bit body, and the bizet of bit body front end is provided with wing, is installed with tooth on the wing, and described wing number is 5, and the number of described tooth is 33, and the distribution number on 5 wings is followed successively by 9,5,6,8,5.
Preferably, described wing number is 5, and wound drill bit body bizet central distribution, its distribution angle are respectively 0 °, 79 °, 155 °, 229 °, 295 °.
Preferably, the centre tooth back rake angle is 15 ° on each wing.
Preferably, main cutting tooth back rake angle is 17 ° on each wing.
Preferably, the back rake angle of last tooth is 25 ° on each wing.
Preferably, described tooth is the 19mm tooth.
Preferably, described bit body front end also is provided with nozzle.
The beneficial effects of the utility model are, the distribution of tooth on the distribution angle of having adjusted wing on the basis of existing drill bit structure and wing, thereby the application life of having improved whole drill bit, and improved bit speed.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment PDC drill bit.
The specific embodiment
The PCD drill bit structure comprises bit body 100, nozzle 200, wing 101 to 105 referring to Fig. 1, and tooth 1 to 33.Wing is installed in bit body front end bizet, and tooth is fixedly mounted on the wing.
Wing wound drill bit body bizet central distribution, its distribution angle is respectively 0 °, 79 °, 155 °, 229 °, 295 °.
Tooth according to distance bit body distance of center circle from distance ordering, as follows in the distribution situation on each wing: as to be the 1st, 3,5,8,13,18,23,28,33 teeth on the wing 101; On the wing 102 the 12nd, 17,22,27,32 teeth; On the wing 103 the 7th, 11,16,21,26,31 teeth; On the wing 104 the 2nd, 4,6,10,15,20,25,30 teeth; On the wing 105 the 9th, 14,19,24,29 teeth.
The back rake angle of each tooth is for differing, and wherein the centre tooth back rake angle is 15 ° on each wing, and main cutting tooth back rake angle is 17 ° on each wing, and the back rake angle of last tooth is 25 ° on each wing.And each tooth is the non-flat mating face cutting teeth of 19mm, and this kind structure is to consider that back rake angle is big more, and the situation that bit speed is slow more is by the design of less back rake angle, to improve rate of penetration.
The above only is preferred embodiment of the present utility model, not in order to restriction the present invention, all any modifications of being done within spirit of the present utility model and principle, is equal to and replaces and improvement etc., all should be included within the protection domain of the present utility model.
Claims (7)
1. a steel body PDC drill bit comprises bit body, and the bizet of bit body front end is provided with wing, be installed with tooth on the wing, it is characterized in that: described wing number is 5, and the number of described tooth is 33, and the distribution number on 5 wings is followed successively by 9,5,6,8,5.
2. a kind of steel body PDC drill bit as claimed in claim 1, it is characterized in that: described wing number is 5, wound drill bit body bizet central distribution, its distribution angle are respectively 0 °, 79 °, 155 °, 229 °, 295 °.
3. a kind of steel body PDC drill bit as claimed in claim 1, it is characterized in that: the centre tooth back rake angle is 15 ° on each wing.
4. a kind of steel body PDC drill bit as claimed in claim 1, it is characterized in that: main cutting tooth back rake angle is 17 ° on each wing.
5. a kind of steel body PDC drill bit as claimed in claim 1, it is characterized in that: the back rake angle of last tooth is 25 ° on each wing.
6. a kind of steel body PDC drill bit as claimed in claim 1, it is characterized in that: described tooth is the 19mm tooth.
7. a kind of steel body PDC drill bit as claimed in claim 1, it is characterized in that: described bit body front end also is provided with nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020151961XU CN201650129U (en) | 2010-03-31 | 2010-03-31 | Steel PDC drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020151961XU CN201650129U (en) | 2010-03-31 | 2010-03-31 | Steel PDC drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201650129U true CN201650129U (en) | 2010-11-24 |
Family
ID=43115360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020151961XU Expired - Lifetime CN201650129U (en) | 2010-03-31 | 2010-03-31 | Steel PDC drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201650129U (en) |
-
2010
- 2010-03-31 CN CN201020151961XU patent/CN201650129U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101124 |
|
| CX01 | Expiry of patent term |