CN203742456U - Low-resistance PDC drill bit - Google Patents
Low-resistance PDC drill bit Download PDFInfo
- Publication number
- CN203742456U CN203742456U CN201420087410.XU CN201420087410U CN203742456U CN 203742456 U CN203742456 U CN 203742456U CN 201420087410 U CN201420087410 U CN 201420087410U CN 203742456 U CN203742456 U CN 203742456U
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- CN
- China
- Prior art keywords
- drill bit
- tooth row
- cutting tooth
- cutting
- pdc drill
- 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
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Abstract
The utility model discloses a low-resistance PDC drill bit. The low-resistance PDC drill bit comprises a drill bit body, a nozzle, six blades on the drill bit body and debris discharging grooves, wherein each debris discharging groove is located between every two adjacent blades, and each blade is provided with a first cutting tooth row and a second cutting tooth row which respectively comprise four cutting teeth. The low-resistance PDC drill bit has the advantages that in the drilling process, rock debris is discharged smoothly, and resistance to the drill bit of the rock debris is small.
Description
Technical field
The utility model relates to petroleum geology drilling technology field, specifically, relates to a kind of lower resistance PDC drill bit.
Background technology
Existing PDC drill bit is creeping into soil layer, when drill bit is in the time creeping at a high speed, and because the landwaste that cutting teeth produces is more, the accumulation that easily produces landwaste.Existing PDC drill bit, it adopts the operator wing and secondary wing respectively cutting teeth to be arranged, and this structure makes a lot of wings need to be set, and the chip area between wing is restricted, and the discharge of landwaste is restricted.Because the discharge of landwaste is not smooth, the resistance that drill bit is subject in the time creeping into is increased, affect the speed that drill bit creeps into, and landwaste and drill bit constantly rub, the wing to drill bit and the behavior in service of cutting teeth can cause and have a strong impact on.And existing PDC drill bit, in order to reach rate of penetration faster, the quantity of its cutting teeth is more, landwaste smear metal speed is fast, due to the structure of drill bit arrange improper, make landwaste discharge be obstructed, make cutting teeth creep into resistance increase, rate of penetration is obstructed.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of lower resistance PDC drill bit.
The technical scheme in the invention for solving the above technical problem is:
Lower resistance PDC drill bit, comprise 6 wings and the chip area between adjacent two wings on bit body, nozzle, bit body, on described wing, be provided with the first cutting tooth row and the second cutting tooth row, the first described cutting tooth row and the second cutting tooth row all comprise 4 cutting teeths.
As preferably, the first described cutting tooth row is different with the proud exposure of the second cutting tooth row.
Further, the first described cutting teeth parallelism second cuts the high 0.7-1.3 centimetre of exposure of tooth row.
As preferably, on the first cutting tooth row and the second cutting tooth row, the diameter of cutting teeth is 15 millimeters.
To sum up, the beneficial effects of the utility model are:
1, the utility model arranges two row's cutting teeths on wing, makes the width of chip area between the increase wing of wing, has increased the speed that landwaste is discharged.
2, of the present utility model 8 cutting teeths are set respectively on 6 wings, adopt while this structure of two row's cutting teeths being set on a wing, the speed that the speed of cutting teeth cutting landwaste is discharged with landwaste is consistent, avoids the accumulation of landwaste, reduces the creep into resistance of landwaste to drill bit.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Mark and corresponding component title in accompanying drawing: 1, bit body; 2, wing; 3, the first cutting tooth row; 4, the second cutting tooth row; 5, chip area; 6, nozzle.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the utility model is done to detailed description further, but embodiment of the present utility model is not limited to this.
Embodiment 1:
Lower resistance PDC drill bit, comprise 6 wings 2 and the chip area 5 between adjacent two wings 2 on bit body 1, nozzle 6, bit body 1, on described wing 2, be provided with the first cutting tooth row 3 and the second cutting tooth row 4, the first described cutting tooth row 3 and the second cutting tooth row 4 all comprise 4 cutting teeths.
In the present embodiment, the operator wing and secondary wing are integrated, owing to having reduced the width of a cutting teeth and wing side, can reduce the width of wing, be the width of the wing in this programme be less than the operator wing and secondary wing width and, increased the width of chip area, the width of chip area increases, and the speed that landwaste is discharged speeds.Adopt the wing structure of this scheme, while adopting 48 cutting teeths through a large amount of experiment showed,, the speed of smear metal landwaste is consistent with the speed that landwaste is discharged, and landwaste can not piled up in chip area, and landwaste is reduced the resistance creeping into.For the landwaste amount that each chip area is discharged is suitable, cutting teeth should evenly arrange, and the first cutting tooth row 3 and the second cutting tooth row 4 are provided with 4 cutting teeths.Experiment showed, that this structure is rational structure, is also best structure.
Embodiment 2:
The present embodiment and embodiment 1 are roughly the same, and in order to make drill bit adapt to different geological stratifications, difference is: the first described cutting tooth row 3 is different with the proud exposure of the second cutting tooth row 4.Utilize the proud exposure difference of cutting teeth, make the technical scheme of the present embodiment can adapt to different geological stratifications, be not only applicable to soft geological layer, be also applicable to hard interbedded layer.
For the anti-impact force that makes drill bit strengthens, the high 0.7-1.3 centimetre of exposure of the first described cutting tooth row 3 to the second cutting tooth rows 4.
Embodiment 3:
The present embodiment and above-described embodiment are roughly the same, and difference is: on the first cutting tooth row 3 and the second cutting tooth row 4, the diameter of cutting teeth is 15 millimeters.Cutting teeth is in the time of smear metal, and the diameter of cutting teeth is larger, and its smear metal speed is faster, in the time that smear metal speed exceedes the landwaste velocity of discharge, easily causes the obstruction of landwaste, and in the time that the diameter of cutting teeth is 15 millimeters, the speed of smear metal landwaste is the most suitable.
As mentioned above, can realize preferably the utility model.
Claims (4)
1. lower resistance PDC drill bit, it is characterized in that: comprise 6 wings (2) on bit body (1), nozzle (6), bit body (1) and be positioned at the chip area (5) between adjacent two wings (2), on described wing (2), be provided with the first cutting tooth row (3) and the second cutting tooth row (4), described the first cutting tooth row (3) and the second cutting tooth row (4) all comprise 4 cutting teeths.
2. lower resistance PDC drill bit according to claim 1, is characterized in that: the first described cutting tooth row (3) is different with the proud exposure of the second cutting tooth row (4).
3. lower resistance PDC drill bit according to claim 1 and 2, is characterized in that: the first described cutting tooth row (3) is than the high 0.7-1.3 centimetre of exposure of the second cutting tooth row (4).
4. lower resistance PDC drill bit according to claim 1, is characterized in that: the diameter of the first cutting tooth row (3) and the upper cutting teeth of the second cutting tooth row (4) is 15 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420087410.XU CN203742456U (en) | 2014-02-28 | 2014-02-28 | Low-resistance PDC drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420087410.XU CN203742456U (en) | 2014-02-28 | 2014-02-28 | Low-resistance PDC drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203742456U true CN203742456U (en) | 2014-07-30 |
Family
ID=51342273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420087410.XU Expired - Fee Related CN203742456U (en) | 2014-02-28 | 2014-02-28 | Low-resistance PDC drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203742456U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835655A (en) * | 2014-02-28 | 2014-06-04 | 成都大漠石油机械有限公司 | Low-resistance PDC drill bit |
-
2014
- 2014-02-28 CN CN201420087410.XU patent/CN203742456U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835655A (en) * | 2014-02-28 | 2014-06-04 | 成都大漠石油机械有限公司 | Low-resistance PDC 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: 20140730 Termination date: 20150228 |
|
| EXPY | Termination of patent right or utility model |