CN203742457U - Efficient PDC drill bit - Google Patents
Efficient PDC drill bit Download PDFInfo
- Publication number
- CN203742457U CN203742457U CN201420087416.7U CN201420087416U CN203742457U CN 203742457 U CN203742457 U CN 203742457U CN 201420087416 U CN201420087416 U CN 201420087416U CN 203742457 U CN203742457 U CN 203742457U
- Authority
- CN
- China
- Prior art keywords
- wing
- drill bit
- landwaste
- pdc drill
- thickness
- 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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- Earth Drilling (AREA)
Abstract
The utility model discloses an efficient PDC drill bit which comprises a drill bit body, six knife wings, a nozzle and a connecting piece. The six knife wings are uniformly arranged on the drill bit body. The nozzle is formed in the upper end of the drill bit body, and the connecting piece is arranged at the lower end of the drill bit body. Each knife wing comprises an upper knife wing body and a lower knife wing body arranged at the lower end of the upper knife wing body. Each upper knife wing body is provided with two rows of cutting teeth. Each row comprises the four cutting teeth. The upper knife wing bodies and the lower knife wing bodies are not parallel. The efficient PDC drill bit has the advantages that rock cutting accumulation is not prone to being caused, and the drilling efficiency is high.
Description
Technical field
The utility model relates to oil and drills through target drill field, particularly, relates to the fast bidentate PDC drill bit of a kind of rate of penetration.
Background technology
Existing PDC drill bit is creeping into soil layer, when drill bit is when creeping at a high speed, and because the landwaste that cutting teeth produces is more, the accumulation that easily produces landwaste.Because the raceway groove between wing parallels with the axis of bit body, bit body is in creeping into the process of rotation, and landwaste can be deposited in raceway groove, and landwaste be difficult for to be discharged, and landwaste only can, along with being on the increase of landwaste, be extruded raceway groove.And 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 gap 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 to when creeping into is increased, affect the speed that drill bit creeps into, and landwaste and drill bit constantly rub, the behavior in service of the wing of drill bit and cutting teeth can be caused and be had a strong impact on.
Utility model content
Technical problem to be solved in the utility model is to provide the PDC drill bit that a kind of drilling efficiency is high.
The technical scheme in the invention for solving the above technical problem is:
High efficiency PDC drill bit, comprise bit body, be evenly arranged on 6 wings, the nozzle of bit body upper end and the connector of bit body lower end on bit body, described wing comprises wing and is positioned at the lower wing of wing lower end, on described upper wing, be provided with two row's cutting teeths, every row's cutting teeth all has 4 cutting teeths, and described upper wing and lower wing are not parallel.
As preferably, described lower wing and the angle between upper wing are greater than 5 degree and are less than 35 degree.
Further, described lower wing and the angle between upper wing are 20 degree.
As preferably, on described upper wing, the height of two row's cutting teeths is different.
Further, the thickness of described upper wing and lower wing thickness different and lower wing is greater than the thickness of upper wing.
Further, large 1 centimetre of the thickness of wing on the Thickness Ratio of described lower wing.
To sum up, the beneficial effects of the utility model are:
1, the utility model arranges two row's cutting teeths on upper wing, has reduced the quantity of wing, has increased the width in gap between wing, increases the width of landwaste passing away, increases the speed that landwaste is discharged.
2, upper wing of the present utility model and lower wing are not parallel, make gap between lower wing twist, and cut landwaste is subject to centrifugal action and discharges along gap, avoids lower wing sidewall to play inhibition to landwaste, accelerate the speed that landwaste is discharged.
3, on 6 wings of the present utility model, 8 cutting teeths are all set, make the speed of cutting teeth cutting landwaste consistent with the landwaste velocity of discharge, avoid the accumulation of landwaste to damage cutting teeth.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Mark and corresponding component title in accompanying drawing: 1, bit body; 2, lower wing; 3, upper wing; 4, cutting teeth; 5, nozzle; 6, connector.
The specific embodiment
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:
A kind of high efficiency PDC drill bit as shown in Figure 1, comprise bit body, be evenly arranged on 6 wings, the nozzle of bit body upper end and the connector of bit body lower end on bit body, described wing comprises wing and is positioned at the lower wing of wing lower end, on described upper wing, be provided with two row's cutting teeths, every row's cutting teeth all has 4 cutting teeths, and described upper wing and lower wing are not parallel.
In the present embodiment, upper wing and lower wing are set to not parallel structure, make gap between lower wing with respect to bit body twist, just to do the running orbit of centrifugal motion consistent with landwaste for this shape, and the landwaste that makes to be got off by smear metal can not be subject to the inhibition of lower wing crag while discharging.Double cutting teeth is set on wing, increases the gap between wing, the width of landwaste passing away increases, and is of value to the speed that landwaste is discharged, and strengthens smear metal speed.Through experimental results demonstrate, 6 wings are set on bit body, and two row's cutting teeths are set on each wing, when the quantity of every row's cutting teeth is 4, arranging rationally of cutting teeth, and the speed that the speed of the smear metal landwaste of cutting teeth and landwaste are discharged is consistent, the impact of the accumulation that can avoid landwaste on smear metal speed and cutting teeth behavior in service.When the quantity of every row's cutting teeth increases, the speed of landwaste smear metal increases, and landwaste is easily piled up, and talus deposit not only has certain inhibition to the speed of cutting teeth, and can damage cutting teeth, affects the application life of cutting teeth.Experimental results demonstrate, when the quantity of every row's cutting teeth is 4, its not only smear metal efficiency is high, is also difficult for causing the accumulation of landwaste.
Embodiment 2:
The present embodiment has been done refinement on the basis of embodiment 1, descends the angle between wing and upper wing to be greater than 5 degree and to be less than 35 degree.Experiment showed, that the angle between wing and upper wing is when 5 degree to 35 are spent instantly, inhibition that its lower wing sidewall is discharged landwaste is little.When the angle number of degrees are less than 5 degree or are greater than 35 while spending, when other term harmonizations, the speed that landwaste is discharged is not significantly improved.
Embodiment 3:
The present embodiment is preferred one group of data in embodiment 2, descending the angle between wing and upper wing is 20 degree.Experiment showed, when the angle number of degrees be 20 while spending, it is fastest that landwaste is discharged.
Embodiment 4:
The present embodiment has been done following improvement on the basis of above-described embodiment, and in order to make this PDC drill bit adapt to different stone layers, on described upper wing, the height of two row's cutting teeths is different.
Described upper wing thickness different with the thickness of lower wing and lower wing is greater than the thickness of upper wing.When the thickness of wing is greater than the thickness of wing instantly, in drilling process, lower wing can be protected upper wing, also can protect cutting teeth.
Embodiment 5:
The present embodiment has been done following improvement on the basis of above-described embodiment, and on the Thickness Ratio of described lower wing, the thickness of wing is large 1 centimetre.Instantly on the Thickness Ratio of wing during large 1 centimetre of the thickness of wing, do not affect rate of penetration, make its protective effect reach optimum yet.
As mentioned above, can realize preferably the utility model.
Claims (6)
1. high efficiency PDC drill bit, comprise bit body (1), be evenly arranged on 6 wings, the nozzle (5) of bit body (1) upper end and the connector (6) of bit body (1) lower end on bit body (1), it is characterized in that: described wing comprises wing (3) and is positioned at the lower wing (2) of wing (3) lower end, on described upper wing (3), be provided with two row's cutting teeths (4), every row's cutting teeth (4) all has 4 cutting teeths, and described upper wing (3) is not parallel with lower wing (2).
2. high efficiency PDC drill bit according to claim 1, is characterized in that: described lower wing (2) and the angle between upper wing (3) are greater than 5 degree and are less than 35 degree.
3. high efficiency PDC drill bit according to claim 2, is characterized in that: described lower wing (2) and the angle between upper wing (3) are 20 degree.
4. high efficiency PDC drill bit according to claim 1, is characterized in that: the height of the upper two row's cutting teeths (4) of described upper wing (3) is different.
5. according to the high efficiency PDC drill bit described in claim 1 or 4, it is characterized in that: described upper wing (3) thickness different with the thickness of lower wing (2) and lower wing (2) is greater than the thickness of upper wing (3).
6. high efficiency PDC drill bit according to claim 5, is characterized in that: large 1 centimetre of the thickness of wing (3) on the Thickness Ratio of described lower wing (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420087416.7U CN203742457U (en) | 2014-02-28 | 2014-02-28 | Efficient PDC drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420087416.7U CN203742457U (en) | 2014-02-28 | 2014-02-28 | Efficient PDC drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203742457U true CN203742457U (en) | 2014-07-30 |
Family
ID=51342274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420087416.7U Expired - Fee Related CN203742457U (en) | 2014-02-28 | 2014-02-28 | Efficient PDC drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203742457U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835657A (en) * | 2014-02-28 | 2014-06-04 | 成都大漠石油机械有限公司 | High-efficiency PDC drill bit |
| CN104594807A (en) * | 2015-01-27 | 2015-05-06 | 青冈庆春油田机械制造有限公司 | Casting spiral scraper knife blade |
| CN109226226A (en) * | 2018-07-23 | 2019-01-18 | 安徽与时环保工程技术有限公司 | A kind of heavy caliber cylinder drill bit formula in-situ remediation system |
-
2014
- 2014-02-28 CN CN201420087416.7U patent/CN203742457U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835657A (en) * | 2014-02-28 | 2014-06-04 | 成都大漠石油机械有限公司 | High-efficiency PDC drill bit |
| CN104594807A (en) * | 2015-01-27 | 2015-05-06 | 青冈庆春油田机械制造有限公司 | Casting spiral scraper knife blade |
| CN109226226A (en) * | 2018-07-23 | 2019-01-18 | 安徽与时环保工程技术有限公司 | A kind of heavy caliber cylinder drill bit formula in-situ remediation system |
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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 |