CN201891387U - 6'' six-blade carcase PDC (Polycrystalline Diamond Compact) drill bit - Google Patents
6'' six-blade carcase PDC (Polycrystalline Diamond Compact) drill bit Download PDFInfo
- Publication number
- CN201891387U CN201891387U CN 201020670117 CN201020670117U CN201891387U CN 201891387 U CN201891387 U CN 201891387U CN 201020670117 CN201020670117 CN 201020670117 CN 201020670117 U CN201020670117 U CN 201020670117U CN 201891387 U CN201891387 U CN 201891387U
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- China
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- drill bit
- blades
- teeth
- wing
- main cutting
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Abstract
The utility model discloses a 6'' six-blade carcase PDC (Polycrystalline Diamond Compact) drill bit, which consists of a drill bit body, blades, spray nozzles, teeth and 1.5'' standard full-spiral gauges, wherein the outside diameter of the drill bit is 6''; the drill bit body is provided with long blades and short blades; the long blades are provided with main cutting teeth; the short blades are provided with main cutting teeth and rear row teeth; the spray nozzles are respectively arranged at the front ends of the long blades and the short blades; the blades use the 1.5'' standard gauges and are distributed around the center of a crown body of the drill bit body at the distribution angles of 0 degree, 68 degrees, 120 degrees, 188 degrees, 243 degrees and 310 degrees; the diameter of the main cutting teeth and the rear row teeth are respective 13mm; the main cutting teeth and the rear row teeth are arranged from near to far according to the distance away from the center of the drill bit body; the back rake angles of the teeth are progressively increased to 23.7 degrees at a gradient of 0.3 degree from 15 degrees; the distribution number of the thirty main cutting teeth on the blades are sequentially 6, 4, 6, 4, 6 and 4; the number of the rear row teeth is 12; and four rear row teeth are distributed on each blade. According to the 6'' six-blade carcase PDC drill bit, the distribution angle of the blades of the drill bit, the gauge length, the distribution position and the back rake angles of the teeth on the blades are adjusted, thereby the service life of the whole drill bit is prolonged; and in addition, the well drilling speed is improved.
Description
Technical field
The utility model relates to a kind of 6 " six wing tyre case PDC drills.
Background technology
Part stratum, basin, the North Sea, THE WESTERN SOUTH CHINA SEA marine site (Eogene drift sand port group, long stream group stratum) is big to the wearing and tearing of drill bit, has had a strong impact on exploration and development speed.The PDC drill bit of prior art, the distribution of tooth and setting and be not suitable for this place layer 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 rate of penetration is lower, influences drillng operation.
Summary of the invention
The purpose of this utility model is, according to basin, North Sea Eogene bad ground lithological characteristic, design utility model PDC drill bit with strong points, the distribution that overcomes tooth on the distribution angle of existing drill bit wing and the wing with irrational deficiency is set, cooperate the improvement of aspects such as drilling parameter and mud system, improve rate of penetration, prolong the application life of drill bit.
The utility model is by bit body, the rimmer knife wing, the short sword wing, nozzle, main cutting tooth, back toothrow, 1.5 " standard is protected directly and formed, and outside dimension is 6 ".On bit body, be provided with 3 rimmer knife wings and 3 short sword wings, 6 main cutting teeth respectively are installed on the rimmer knife wing, toothrow after 4 main cutting teeth and 4 respectively are installed on the short sword wing, front end at the rimmer knife wing and the short sword wing all is equipped with nozzle, wing adopts 1.5 " standard is protected the footpath; wound drill bit body bizet central distribution, its distribution angle are respectively 0 °, 68 °, 120 °, 188 °, 243 °, 310 °; Main cutting is diameter 13mm tooth with the back toothrow, and by arranging from the near to the remote with bit body centre distance, the back rake angle of tooth is incremented to 23.7 ° since 15 ° with 0.3 ° of ladder; Toothrow after the distribution number of 30 main cutting teeth on wing is followed successively by 6,4,6,4,6,4,12, the short sword wing respectively distributes 4.
The beneficial effects of the utility model are, the distribution and the setting of tooth on the distribution angle of having adjusted wing on the basis of existing drill bit structure and wing, thus prolonged application life of whole drill bit, and improved bit speed.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model structure vertical view.
The specific embodiment
The PDC drill bit structure is referring to Fig. 1, comprise 3,6 nozzles 4 of 2,3 short sword wings of 1,3 rimmer knife wings of bit body, and 30 main cutting teeth 6, the distribution number of main cutting tooth 6 on wing is followed successively by 6,4,6,4,6,4, toothrow 5 after 12, and the short sword wing 3 respectively distributes 4.Toothrow 5 after 12.Wing is fixed on the bit body 1, and tooth is fixedly mounted on the wing, and nozzle 4 is installed in the wing front end.
Wing wound drill bit body bizet central distribution comprises 3 rimmer knife wings 2 and 3 short sword wings 3, and " standard is protected footpath 7, and wound drill bit body bizet central distribution, its distribution angle are respectively 0 °, 68 °, 120 °, 188 °, 243 °, 310 ° to adopt 1.5.
The back rake angle of each tooth by arranging from the near to the remote with the distance at bit body center, is incremented to 23.7 ° since 15 ° with 0.3 ° of interval ladder for differing, and main cutting tooth 6 is diameter 13mm tooth with back toothrow 5.
Claims (1)
1. one kind 6 " six wing tyre case PDC drills; by bit body; the rimmer knife wing; the short sword wing; nozzle; main cutting tooth, back toothrow, " 1.5 standard is protected the footpath and is formed; it is characterized in that outside dimension is 6 ", bit body (1) is provided with 3 rimmer knife wings (2) and 3 short sword wings (3), 6 main cutting teeth (6) respectively are installed on the rimmer knife wing (2), toothrow (5) after 4 main cutting teeth (6) and 4 respectively are installed on the short sword wing (3), front end at the rimmer knife wing (2) and the short sword wing (3) all is equipped with nozzle (4), wing adopts 1.5, and " standard is protected footpath (7); wound drill bit body (1) bizet central distribution, and its distribution angle is respectively 0 °; 68 °; 120 °; 188 °; 243 °, 310 °; Main cutting tooth (6) is diameter 13mm tooth with back toothrow (5), by arranging from the near to the remote with bit body (1) centre distance, the back rake angle of tooth is incremented to 23.7 ° since 15 ° with 0.3 ° of ladder, the distribution number of 30 main cutting teeth (6) on wing is followed successively by 6,4,6,4,6,4, toothrow after 12, the short sword wing respectively distribute 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020670117 CN201891387U (en) | 2010-12-15 | 2010-12-15 | 6'' six-blade carcase PDC (Polycrystalline Diamond Compact) drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020670117 CN201891387U (en) | 2010-12-15 | 2010-12-15 | 6'' six-blade carcase PDC (Polycrystalline Diamond Compact) drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201891387U true CN201891387U (en) | 2011-07-06 |
Family
ID=44220863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020670117 Expired - Fee Related CN201891387U (en) | 2010-12-15 | 2010-12-15 | 6'' six-blade carcase PDC (Polycrystalline Diamond Compact) drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201891387U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256008A (en) * | 2013-05-21 | 2013-08-21 | 四川川石·克锐达金刚石钻头有限公司 | PDC drill bit with double shaft bottom covering |
| CN103742077A (en) * | 2014-01-26 | 2014-04-23 | 山东远征石油设备股份有限公司 | Composite wear-resisting drill bit |
-
2010
- 2010-12-15 CN CN 201020670117 patent/CN201891387U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256008A (en) * | 2013-05-21 | 2013-08-21 | 四川川石·克锐达金刚石钻头有限公司 | PDC drill bit with double shaft bottom covering |
| CN103742077A (en) * | 2014-01-26 | 2014-04-23 | 山东远征石油设备股份有限公司 | Composite wear-resisting drill bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110706 Termination date: 20151215 |
|
| EXPY | Termination of patent right or utility model |