CN104895501A - PDC drill bit with high drilling speed - Google Patents
PDC drill bit with high drilling speed Download PDFInfo
- Publication number
- CN104895501A CN104895501A CN201510273649.5A CN201510273649A CN104895501A CN 104895501 A CN104895501 A CN 104895501A CN 201510273649 A CN201510273649 A CN 201510273649A CN 104895501 A CN104895501 A CN 104895501A
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- drill bit
- cutting teeth
- pdc drill
- exposure
- circular cut
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Abstract
The invention discloses a PDC drill bit with the high drilling speed. The PDC drill bit comprises a drill bit body, blades arranged on the drill bit body and chip grooves arranged between every two adjacent blades. The blades are each provided with two rows of cutting teeth. Each row of cutting teeth comprises three circular cutting teeth and three pointed cutting teeth. The pointed cutting teeth are higher than the circular cutting teeth in exposure. The center of the top of the drill bit body is provided with a drilling head. The drilling head is a drill bit shaped like a Chinese character 'ren'. The PDC drill bit has the advantage of being high in drilling speed.
Description
Technical field
The present invention relates to oil exploitation and drill through instrument, particularly, relate to the PDC drill bit that a kind of rate of penetration is fast.
Background technology
Existing PDC drill bit, it mainly comprises cutting teeth, wing, nozzle and bit body, and existing cutting teeth is mostly circular cut tooth, has the advantages such as good mechanical effect, long service life, be widely used due to it.But, existing PDC drill bit, due to its utilize cutting teeth to rock stratum carry out chip visit into, visit in hard formation or middle incompetent bed into time, it does not have enough broken rock power, and make to visit into limited speed, namely rate of penetration is limited.
Summary of the invention
Technical problem to be solved by this invention is to provide the fast PDC drill bit of a kind of rate of penetration.
The present invention's adopted technical scheme that solves the problem is:
The PDC drill bit that a kind of rate of penetration is fast, comprise bit body, be arranged on chip area between wing on bit body and adjacent two wings, described wing is provided with two row's cutting teeths, often arrange cutting teeth and comprise 3 circular cut teeth and 3 pointed cutting teeths, the exposure of described pointed cutting teeth is higher than the exposure of circular cut tooth, the center of top of described bit body is provided with creeps into head, and the described head that creeps into is herringbone drill bit.
As preferably, often arrange circular cut tooth on cutting teeth and pointed cutting teeth staggered.
As preferably, the exposure of described pointed cutting teeth is than the exposure height 1.0-1.5 millimeter of circular cut tooth.
As preferably, described creeping on head is provided with reinforcing rib.
To sum up, the invention has the beneficial effects as follows:
1, the present invention arranges herringbone drill bit on bit body, and it can position drilling direction, also makes the broken rock power of PDC drill bit in drilling process strengthen, can accelerate the cutting speed of cutting teeth, accelerate the speed of creeping into.
2, cutting teeth of the present invention be set to circular cut tooth and pointed cutting teeth and the exposure of pointed cutting teeth higher than the exposure of circular cut tooth, make when creeping into, pointed cutting teeth can first cut rock stratum, strengthens the cutting power of formation, improves rate of penetration.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Mark and corresponding component title in accompanying drawing: 1, bit body; 2, chip area; 3, wing; 4, circular cut tooth; 5, pointed cutting teeth; 6, head is crept into.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, to the detailed description further of the present invention's do, but embodiments of the present invention are not limited thereto.
Embodiment 1:
The PDC drill bit that a kind of rate of penetration is fast, comprise bit body 1, be arranged on chip area 2 between wing 3 on bit body 1 and adjacent two wings, described wing 3 is provided with two row's cutting teeths, often arrange cutting teeth and comprise 3 circular cut teeth 4 and 3 pointed cutting teeths 5, the exposure of described pointed cutting teeth 5 is higher than the exposure of circular cut tooth 4, the center of top of described bit body 1 is provided with creeps into 6, and described to creep into 6 be herringbone drill bit.
In the technical scheme of the present embodiment, prior art is improved, cutting teeth is set to circular cut tooth 4 and pointed cutting teeth 5 and the exposure of pointed cutting teeth higher than the exposure of circular cut tooth, make when creeping into, pointed cutting teeth can first cut rock stratum, strengthen the cutting power of formation, improve rate of penetration.Wing is arranged two row's cutting teeths, make under the prerequisite that certain cutting teeth quantity is set, wing quantity reduces by half, the width of chip area is increased, namely improve the velocity of discharge of landwaste, the landwaste velocity of discharge speeds, and reduces the accumulation of landwaste, avoid the accumulation of landwaste, also can accelerate the rate of penetration of cutting teeth.Herringbone is set at the top of bit body and creeps into head, creep into head and not only can position the dilling angle of drill bit, avoid departing from drilling trace, drill bit is when creeping into, creep into 6 first to rock stratum visit into, reduce the cutting pressure of follow-up cutting teeth, improve the speed of creeping into.
Embodiment 2:
As inscribed the fast PDC drill bit of a kind of rate of penetration shown in 1, the present embodiment improves on the basis of embodiment 1: often arrange circular cut tooth 4 on cutting teeth and pointed cutting teeth 5 staggered.Utilize circular cut tooth 4 and pointed cutting teeth 5 staggered, make pointed cutting teeth to the uniform force of rock stratum, improve the application life of pointed cutting teeth.
The exposure of described pointed cutting teeth 5 is than the exposure height 1.0-1.5 millimeter of circular cut tooth 4.If pointed cutting teeth exposure is higher, after making it need the degree of depth at the wedging end, ground comparatively dark, circular cut tooth just starts to cut, and makes efficiency slack-off.If the exposure of pointed cutting teeth is lower, the DeGrain of broken rock power.
Embodiment 3:
As inscribed the fast PDC drill bit of a kind of rate of penetration shown in 1, the present embodiment improves on the basis of above-described embodiment: described creeping on 6 is provided with reinforcing rib.Because bit body is herringbone, in drilling process, the lobe of bit body is subject to, along bad, utilize reinforcing rib to be connected between lobe, can strengthen its application life.
As mentioned above, the present invention can be realized preferably.
Claims (4)
1. the PDC drill bit that a rate of penetration is fast, it is characterized in that: comprise bit body (1), be arranged on chip area (2) between wing (3) on bit body (1) and adjacent two wings, described wing (3) is provided with two row's cutting teeths, often arrange cutting teeth and comprise 3 circular cut teeth (4) and 3 pointed cutting teeths (5), the exposure of described pointed cutting teeth (5) is higher than the exposure of circular cut tooth (4), the center of top of described bit body (1) is provided with creeps into head (6), and described creeps into head (6) for herringbone drill bit.
2. the PDC drill bit that a kind of rate of penetration according to claim 1 is fast, is characterized in that: often arrange circular cut tooth (4) on cutting teeth and pointed cutting teeth (5) staggered.
3. the PDC drill bit that a kind of rate of penetration according to claim 1 is fast, is characterized in that: the exposure of described pointed cutting teeth (5) is than the exposure height 1.0-1.5 millimeter of circular cut tooth (4).
4. the PDC drill bit that a kind of rate of penetration according to claim 1 is fast, is characterized in that: described creeping on head (6) is provided with reinforcing rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510273649.5A CN104895501A (en) | 2015-05-26 | 2015-05-26 | PDC drill bit with high drilling speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510273649.5A CN104895501A (en) | 2015-05-26 | 2015-05-26 | PDC drill bit with high drilling speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104895501A true CN104895501A (en) | 2015-09-09 |
Family
ID=54028417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510273649.5A Pending CN104895501A (en) | 2015-05-26 | 2015-05-26 | PDC drill bit with high drilling speed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104895501A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835658A (en) * | 2014-02-28 | 2014-06-04 | 成都大漠石油机械有限公司 | Double-tooth PDC drill bit high in drilling speed |
| 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 |
| CN203783473U (en) * | 2014-02-28 | 2014-08-20 | 成都大漠石油机械有限公司 | Dual-tooth PDC drill bit with fast drilling speed |
| CN104018783A (en) * | 2014-05-27 | 2014-09-03 | 成都来宝石油设备有限公司 | High-drilling-speed PDC drill bit |
| CN203847004U (en) * | 2014-05-27 | 2014-09-24 | 成都来宝石油设备有限公司 | PDC drill bit with high drilling rate |
-
2015
- 2015-05-26 CN CN201510273649.5A patent/CN104895501A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835658A (en) * | 2014-02-28 | 2014-06-04 | 成都大漠石油机械有限公司 | Double-tooth PDC drill bit high in drilling speed |
| 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 |
| CN203783473U (en) * | 2014-02-28 | 2014-08-20 | 成都大漠石油机械有限公司 | Dual-tooth PDC drill bit with fast drilling speed |
| CN104018783A (en) * | 2014-05-27 | 2014-09-03 | 成都来宝石油设备有限公司 | High-drilling-speed PDC drill bit |
| CN203847004U (en) * | 2014-05-27 | 2014-09-24 | 成都来宝石油设备有限公司 | PDC drill bit with high drilling rate |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150909 |
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| RJ01 | Rejection of invention patent application after publication |