CN203835276U - PDC drill bit - Google Patents
PDC drill bit Download PDFInfo
- Publication number
- CN203835276U CN203835276U CN201420224107.XU CN201420224107U CN203835276U CN 203835276 U CN203835276 U CN 203835276U CN 201420224107 U CN201420224107 U CN 201420224107U CN 203835276 U CN203835276 U CN 203835276U
- Authority
- CN
- China
- Prior art keywords
- drill bit
- pdc drill
- composite sheet
- welded
- bit body
- 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 PDC drill bit. The PDC drill bit comprises a drill bit body, knife wings, cutting teeth, composite sheets, nozzles and a guiding drill bit body, wherein the cutting teeth and the composite sheets are welded to the knife wings, the cutting teeth are welded to the front edges of the knife wings, the composite sheets are welded to the rear edges of the knife wings, the guiding drill bit body is connected with the front end of the drill bit body through reversed-tooth threads, and the top end of each nozzle is an oblique plane. The PDC drill bit has the advantages that the design is reasonable, the comprehensive mechanical performance of the drill bit is excellent, the rate of penetration is high, the nozzles with the effective blocking preventing function are arranged, the guiding drill bit body can be dismantled and replaced, the working efficiency is improved, the production cost is reduced, the stability is high, and the service life is long.
Description
Technical field
The utility model relates to a kind of steel body bit, relates in particular to a kind of PDC drill bit.
Background technology
In oil drilling, generally adopt PDC (composite polycrystal-diamond) drill bit.PDC drill bit is divided into two kinds of matrix-type and steel body formulas according to matrix material difference, and wherein steel body bit is processed into by lathe milling machine with structural alloy steel.The steel body PDC drill bit of prior art, service behaviour is poor, PDC composite sheet easily produces cracked and over worn phenomenon, the PDC drill bit of prior art is generally integral structure, when after the head wearing and tearing of drill bit, need to, by whole bit change-over, so not only waste material, and use cost improve greatly.Simultaneously, this PDC drill bit is in drilling process, easily cause the well getting out to tilt, in order to prevent that well from tilting, conventionally need to reduce the rotating speed of PDC drill bit, or with a thinner straight hole of drill bit subdrilling, and then with the reaming of PDC drill bit, so just cause the efficiency of boring lower, affect exploitation rate.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of PDC drill bit with effective anti-clogging shower nozzle with replaceable guiding drill bit.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of PDC drill bit, comprise bit body, wing, cutting teeth, composite sheet, nozzle, guiding drill bit, described cutting teeth and composite sheet are all welded on described wing, described cutting teeth is welded on described wing leading edge, described composite sheet is welded on described wing trailing edge, described drill guide is fixed on bit body front end, described drill guide is provided with cutting composite sheet and hydrophthalmia, and described cutting composite sheet and hydrophthalmia are all arranged along described guiding drill bit radial equipartition.
As preferably, described nozzle tip is an inclined-plane.
As preferably, described wing is 4 or 5.
As preferably, described wing is spirality.
As preferably, described nozzle is uniform to be arranged on described bit body.
As preferably, described wing is mal-distribution on the circumference of described bit body.
As preferably, described composite sheet top is hemisphere.
The beneficial effects of the utility model are: with effective anti-clogging shower nozzle, guiding drill bit can dismounting and change, has improved operating efficiency, has reduced cost of production, is suitable for extensive popularization.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the top view of the utility model preferred embodiment;
Fig. 2 is the structure chart of preferred embodiment shown in Fig. 1.
In figure, 1-bit body, 2-wing, 3-cutting teeth, 4-composite sheet, 5-nozzle, 6-guides drill bit, and 61-cuts composite sheet, 62-hydrophthalmia.
Detailed description of the invention
A kind of PDC drill bit, comprise bit body 1, wing 2, cutting teeth 3, composite sheet 4, nozzle 5, guiding drill bit 6, PDC drill bit in the course of the work its cutting teeth 3 the most easily weares and teares, of long duration can affect bit speed, reduce operating efficiency and increase cost, tend to cause unnecessary waste once cutting teeth 3 wearing and tearing need to be changed whole drill bit, in the utility model preferred embodiment for fear of the problems referred to above, cutting teeth 3 is welded on described bit body 1 body, can changes.In order to adapt to the soil layer of comparatively complicated hard interbedded layer, reduce the damage to bit body 1, on described wing 2, be welded with composite sheet 4, described composite sheet 4 tops are hemisphere.Described cutting teeth 3 is welded on described wing 2 leading edges, and described composite sheet 4 is welded on described wing 2 trailing edges.Described drill guide 6 is provided with cutting composite sheet 61 and hydrophthalmia 62, and described cutting composite sheet 61 and hydrophthalmia 62 are all arranged along described guiding drill bit 6 radial equipartitions.For the effect of effective performance nozzle 5, it prevents from stopping up, and nozzle 5 tops are an inclined-plane, and described nozzle 5 is uniform to be arranged on described bit body 1.Described wing 2 is 4 or 5, described wing 2 mal-distribution and be spirality on the circumference of described bit body 1.
Above-described the utility model embodiment, does not form the restriction to the utility model protection domain.Any amendment of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in claim protection domain of the present utility model.
Claims (7)
1. a PDC drill bit, comprise bit body (1), wing (2), cutting teeth (3), composite sheet (4), nozzle (5), guiding drill bit (6), it is characterized in that: described cutting teeth (3) and composite sheet (4) are all welded on described wing (2), described cutting teeth (3) is welded on described wing (2) leading edge, described composite sheet (4) is welded on described wing (2) trailing edge, described drill guide (6) is fixed on bit body (1) front end, described drill guide (6) is provided with cutting composite sheet (61) and hydrophthalmia (62), described cutting composite sheet (61) and hydrophthalmia (62) are all arranged along described guiding drill bit (6) radial equipartition.
2. a kind of PDC drill bit according to claim 1, is characterized in that: described nozzle (5) top is an inclined-plane.
3. a kind of PDC drill bit according to claim 1, is characterized in that: described wing (2) is 4 or 5.
4. a kind of PDC drill bit according to claim 1, is characterized in that: described wing (2) is spirality.
5. a kind of PDC drill bit according to claim 1 and 2, is characterized in that: described nozzle (5) is uniform to be arranged on described bit body (1).
6. according to a kind of PDC drill bit described in claim 1,3 or 4, it is characterized in that: described wing (2) mal-distribution on the circumference of described bit body (1).
7. a kind of PDC drill bit according to claim 1, is characterized in that: described composite sheet (4) top is hemisphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420224107.XU CN203835276U (en) | 2014-05-04 | 2014-05-04 | PDC drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420224107.XU CN203835276U (en) | 2014-05-04 | 2014-05-04 | PDC drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203835276U true CN203835276U (en) | 2014-09-17 |
Family
ID=51513133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420224107.XU Expired - Fee Related CN203835276U (en) | 2014-05-04 | 2014-05-04 | PDC drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203835276U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374517A (en) * | 2019-06-17 | 2019-10-25 | 河北锐石钻头制造有限公司 | A kind of Novel anti-blockage PDC drill bit |
| CN110593768A (en) * | 2019-10-24 | 2019-12-20 | 烟台华士石油机械有限公司 | Size-adjustable drill bit |
| WO2020062741A1 (en) * | 2018-09-26 | 2020-04-02 | 西南石油大学 | Efficient composite drill bit suitable for deep well stratum difficult to drill |
-
2014
- 2014-05-04 CN CN201420224107.XU patent/CN203835276U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020062741A1 (en) * | 2018-09-26 | 2020-04-02 | 西南石油大学 | Efficient composite drill bit suitable for deep well stratum difficult to drill |
| CN110374517A (en) * | 2019-06-17 | 2019-10-25 | 河北锐石钻头制造有限公司 | A kind of Novel anti-blockage PDC drill bit |
| CN110593768A (en) * | 2019-10-24 | 2019-12-20 | 烟台华士石油机械有限公司 | Size-adjustable 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: 20140917 Termination date: 20210504 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |