CN204920809U - Mud drum drill bit is prevented to little hydrophthalmia - Google Patents
Mud drum drill bit is prevented to little hydrophthalmia Download PDFInfo
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- CN204920809U CN204920809U CN201520641323.9U CN201520641323U CN204920809U CN 204920809 U CN204920809 U CN 204920809U CN 201520641323 U CN201520641323 U CN 201520641323U CN 204920809 U CN204920809 U CN 204920809U
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- hydrophthalmia
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Abstract
The utility model provides a mud drum drill bit is prevented to little hydrophthalmia, includes PDC tooth, drill bit body and joint, and the drill bit body is installed on connecting, and the drill bit body is by a plurality of wing and advise the footpath, and the wing is divided into rake face and back of the body knife face again according to drill bit direction of rotation, and the PDC tooth is brazed at the wing top, forms the chip groove between two adjacent wings, and the drill bit is the internal conventional hydrophthalmia that feeds through with the mud passageway that is equipped with originally, and its characterized in that is equipped with little hydrophthalmia on the out -of -the -way knife face of every wing. Little hydrophthalmia and mud passageway intercommunication. Little hydrophthalmia on the out -of -the -way knife face of every wing is 1-2. The diameter of little hydrophthalmia can design to phi 5mm- phi 15mm according to the drill bit size of a dimension. Through special water course design, not only the out -of -the -way knife face of wing can be washed, still can change the shaft bottom flow field, prevents that the detritus from being that back of the body knife face is piled up, timely effectual the detritus area far from the shaft bottom, avoid bit balling to improve drill bit machinery drilling speed, reduce and rise to run the drilling tool into the well because of what bit balling caused, practice thrift drilling period.
Description
Technical field
The utility model relates to petroleum gas, drilling technique used for geological prospecting, belongs to the rotary drilling drill bit of a kind of oil, geology, especially relevant with the structure of the anti-balled bit of a kind of little hydrophthalmia.
Background technology
At present, use PDC tooth very extensive as the rotary drilling drill bit (being called for short PDC drill bit) of cutting teeth in the field such as oil, geology.The advantages such as it is high that PDC drill bit has rate of penetration, and the footage per bit life-span is long.Due in the part easily stratum of mud drum and the drilling crew of mud condition difference, conventional PDC drill bit is when work is crept in shaft bottom, the landwaste that bit cutting gets off, flute of drill can not be taken away in time, be deposited on drill bit, cause water blockoff eye, balled bit, drill bit loses attack, drill bit cisco unity malfunction.Mud drum problem is exactly the difficult problem that PDC drill bit ubiquity does not solve again.
Utility model content
The utility model provides a kind of little hydrophthalmia anti-balled bit, solves above-mentioned the deficiencies in the prior art, by special water channel design, reduces the probability of bit balling, thus improves bit speed.
In order to realize the purpose of this utility model, intend adopting following technology:
The anti-balled bit of a kind of little hydrophthalmia, comprise PDC tooth, drill body and joint, drill body is arranged on joint, drill body is by several wings and rule footpath, and wing is divided into again rake face and back of the body knife face by bit direction, and the soldering of PDC tooth is at wing top, chip area is formed between two adjacent blades, be provided with the conventional hydrophthalmia be communicated with slurry channel in drill body, it is characterized in that, the back of the body knife face of each wing is provided with little hydrophthalmia.
Further, described little hydrophthalmia is communicated with slurry channel.
Further, the little hydrophthalmia on the back of the body knife face of described each wing is 1 ~ 2, selects according to the easy mud drum degree in stratum.
Further, the diameter of described little hydrophthalmia is designed to Φ 5mm ~ Φ 15mm according to the large I of bit size.
The beneficial effect of technique scheme is:
By special water channel design, increase little hydrophthalmia at the back of the body knife face of each wing, when drill bit is used in the strata drilling of easy mud drum, due to the existence of little hydrophthalmia, not only the back of the body knife face of wing can be rinsed, and also can change bottom-hole flow field, prevents landwaste at chip area, especially be that back of the body knife face is piled up, timely and effectively landwaste is taken away shaft bottom, avoid bit balling, thus improve drill bit rate of penetration, what minimizing caused because of bit balling makes a trip, and saves drilling period.
Accompanying drawing explanation
Fig. 1 shows structural representation one of the present utility model.
Fig. 2 shows structural representation two of the present utility model.
Wherein, 1 is PDC tooth, and 2 is drill body, and 3 is joint, and 21 is wing, and 22 is rule footpath, 211 rake faces, and 212 is back of the body knife face, and 4 is chip area, and 5 is slurry channel, and 51 is conventional hydrophthalmia, and 52 is little hydrophthalmia.
Detailed description of the invention
As shown in Fig. 1 ~ 2, the anti-balled bit of a kind of little hydrophthalmia, comprise PDC tooth 1, drill body 2 and joint 3, drill body 2 is arranged on joint 3, drill body 2 is by several wings 21 and rule footpath 22, wing 21 is divided into again rake face 211 and back of the body knife face 212 by bit direction, PDC tooth 1 soldering is at wing 21 top, chip area 4 is formed between two adjacent blades 21, be provided with the conventional hydrophthalmia 51 be communicated with slurry channel 5 in drill body 2, the back of the body knife face 212 of each wing 21 is provided with little hydrophthalmia 52.Described little hydrophthalmia 52 is communicated with slurry channel 5.
Concrete, according to the easy mud drum degree in stratum, the little hydrophthalmia 52 on the back of the body knife face 212 of described each wing 21 can be designed to 1 ~ 2.
Concrete, the diameter of described little hydrophthalmia 52 is designed to Φ 5mm ~ Φ 15mm according to the large I of bit size, to adapt to the drill bit of different size.
During existing bit operation, mud flows into drill bit from the slurry channel 5 on joint 3 top, and mud can only flow out from conventional hydrophthalmia 51, can not wash away the back of the body knife face 212 of wing 21.Adopt the anti-balled bit of little hydrophthalmia, mud flows into drill bit from the slurry channel 5 on joint 3 top, and part mud flows out from conventional hydrophthalmia 51, the normal flushing most of region of chip area 4; Part mud flows out from little hydrophthalmia 52, has rinsed the back of the body knife face 212 of wing 21, compensate for the conventional impalpable region of hydrophthalmia 51, prevent landwaste from piling up at back of the body knife face 212, and then can prevent chip area 4 from piling up landwaste, meanwhile, due to the existence of little hydrophthalmia 52, change bottom-hole flow field, timely and effectively landwaste can be taken away shaft bottom, avoid bit balling, what minimizing caused because of bit balling makes a trip, thus improve drill bit rate of penetration, save drilling period.
Claims (4)
1. the anti-balled bit of little hydrophthalmia, comprise PDC tooth (1), drill body (2) and joint (3), drill body (2) is arranged on joint (3), drill body (2) is by several wings (21) and rule footpath (22), wing (21) is divided into again rake face (211) and back of the body knife face (212) by bit direction, PDC tooth (1) soldering is at wing (21) top, chip area (4) is formed between two adjacent blades (21), the conventional hydrophthalmia (51) be communicated with slurry channel (5) is provided with in drill body (2), it is characterized in that, the back of the body knife face (212) of each wing (21) is provided with little hydrophthalmia (52).
2. the anti-balled bit of little hydrophthalmia according to claim 1, is characterized in that, described little hydrophthalmia (52) is communicated with slurry channel (5).
3. the anti-balled bit of little hydrophthalmia according to claim 1, is characterized in that, the little hydrophthalmia (52) on the back of the body knife face (212) of described each wing (21) is 1 ~ 2.
4. the anti-balled bit of little hydrophthalmia according to claim 1, is characterized in that, the diameter of described little hydrophthalmia (52) is designed to Φ 5mm ~ Φ 15mm according to the large I of bit size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520641323.9U CN204920809U (en) | 2015-08-24 | 2015-08-24 | Mud drum drill bit is prevented to little hydrophthalmia |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520641323.9U CN204920809U (en) | 2015-08-24 | 2015-08-24 | Mud drum drill bit is prevented to little hydrophthalmia |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204920809U true CN204920809U (en) | 2015-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520641323.9U Active CN204920809U (en) | 2015-08-24 | 2015-08-24 | Mud drum drill bit is prevented to little hydrophthalmia |
Country Status (1)
| Country | Link |
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| CN (1) | CN204920809U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888559A (en) * | 2016-05-09 | 2016-08-24 | 中国石油天然气股份有限公司 | PDC (polycrystalline diamond compact) drill bit applicable to mud rock |
| CN107435522A (en) * | 2017-09-21 | 2017-12-05 | 四川川石金刚石钻头有限公司 | A kind of PDC drill bit of the anti-mud drum nozzle arrangements of band |
| CN110469270A (en) * | 2018-05-11 | 2019-11-19 | 成都百施特金刚石钻头有限公司 | A kind of PDC drill bit with anti-mud drum function |
-
2015
- 2015-08-24 CN CN201520641323.9U patent/CN204920809U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888559A (en) * | 2016-05-09 | 2016-08-24 | 中国石油天然气股份有限公司 | PDC (polycrystalline diamond compact) drill bit applicable to mud rock |
| CN107435522A (en) * | 2017-09-21 | 2017-12-05 | 四川川石金刚石钻头有限公司 | A kind of PDC drill bit of the anti-mud drum nozzle arrangements of band |
| CN110469270A (en) * | 2018-05-11 | 2019-11-19 | 成都百施特金刚石钻头有限公司 | A kind of PDC drill bit with anti-mud drum function |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |