CN202706923U - Reinforced polycrystalline diamond compact (PDC) drill - Google Patents
Reinforced polycrystalline diamond compact (PDC) drill Download PDFInfo
- Publication number
- CN202706923U CN202706923U CN 201220310237 CN201220310237U CN202706923U CN 202706923 U CN202706923 U CN 202706923U CN 201220310237 CN201220310237 CN 201220310237 CN 201220310237 U CN201220310237 U CN 201220310237U CN 202706923 U CN202706923 U CN 202706923U
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- main cutting
- reinforced
- teeth
- drill bit
- pdc drill
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- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The utility model discloses a reinforced polycrystalline diamond compact (PDC) drill which comprises a drill body. Blades and water spray holes are arranged on a crown portion of the front end of the drill body. Each blade is provided with a plurality of main cutting teeth which are arranged in sequence. The main cutting teeth are PDCs. A group of wedge-shaped drilling acuminate teeth are inlaid behind the main cutting teeth. The wedge-shaped drilling acuminate teeth are polycrystalline diamonds. The height of the wedge-shaped drilling acuminate teeth are bigger than or equal to that of main cutting teeth. Due to the fact that the wedge-shaped drilling acuminate teeth is higher than the main cutting teeth, when the reinforced PDC drill is used to drill a piece of hard formation in moderate abrasiveness and with a certain plasticity, first, the wedge-shaped drilling acuminate teeth are used to carry out cutting destruction for the hard formation, and then the main cutting teeth are used to shear and crush. Not only is the mechanical penetration rate high, but also the hard formation can be easily drilled into. Abrasions to the main cutting teeth are greatly reduced, and the service life of the reinforced PDC drill is prolonged.
Description
Technical field
The drill bit of using in a kind of oil and gas well drilling engineering of the utility model relates in particular to a kind of reinforced PDC drill bit.
Background technology
At present, the drill bit of oil field welldrilling mainly contains PDC drill bit, rock bit and diamond bit.Moderate and with the hard formation of certain plasticity for abrasiveness, the rate of penetration of the diamond bit of the rock bit of attrition crushing rock and grinding fractured rock is too slow, although and the PDC drill bit rate of penetration of shearing-crushing rock is fast, but be difficult to this hard formation of wedging.
The utility model content
Technical problem to be solved in the utility model provides a kind of reinforced PDC drill bit, and is moderate and during with the hard formation of certain plasticity, not only rate of penetration is fast for it, and very easy this hard formation of wedging in the probing abrasiveness.
In order to solve the problems of the technologies described above, the technical scheme content that the utility model adopts is specific as follows:
A kind of reinforced PDC drill bit, a kind of reinforced PDC drill bit comprises drill body, and the bizet of described drill body front end is provided with wing and hole for water spraying, and described wing is provided with a plurality of main cutting teeth that are arranged in order; Described main cutting tooth is diamond compact; Described main cutting tooth back is inlayed one group of wedge shape and is crept into pointed tooth; It is polycrystalline diamond that described wedge shape is crept into pointed tooth; Described wedge shape is crept into the height of pointed tooth more than or equal to the height of described main cutting tooth.
Preferably, described wedge shape is crept into the difference in height of pointed tooth and described main cutting tooth between 0mm-2mm.
Preferably, the quantity of described wing is 3-9.
Preferably, the described wedge shape leading flank and the trailing flank that creep into pointed tooth is respectively an equilateral triangular structure.
Preferably, the length of side of described equilateral triangle structure is 4～8mm.
Preferably, described main cutting tooth is cylindric.
Preferably, the diameter of described main cutting tooth is 8-22mm.
Preferably, the diameter of described PDC drill bit is 88.9mm-444.5mm.
Compared with prior art, the utility model has produced following beneficial effect:
Reinforced PDC drill bit of the present utility model, because it is provided with than the wedge shape of main cutting tooth depth and creeps into pointed tooth, so, moderate and during with the hard formation of certain plasticity in the probing abrasiveness, creep into pointed tooth by wedge shape first and this hard formation is carried out designated port destroy, carry out shearing-crushing by the main cutting tooth again, not only rate of penetration is fast, and very easy this hard formation of wedging, reduced widely the wearing and tearing to the main cutting tooth, prolonged the application life of drill bit.
Description of drawings
The utility model will be further described below in conjunction with the drawings and specific embodiments:
Fig. 1 is the more preferably structural representation of embodiment of reinforced PDC drill bit of the present utility model;
Fig. 2 is the A direction structure schematic diagram of Fig. 1.
The specific embodiment
As depicted in figs. 1 and 2, reinforced PDC drill bit of the present utility model comprises drill body 1, and the bizet of described drill body 1 front end is provided with wing 2 and hole for water spraying 3, and described wing 2 is provided with a plurality of main cutting teeth 21 that are arranged in order; Described main cutting tooth 21 is diamond compact; Described main cutting tooth 21 back are inlayed one group of wedge shape and are crept into pointed tooth 22; Described wedge shape is crept into pointed tooth 22 and is polycrystalline diamond; Described wedge shape is crept into the height of pointed tooth 22 more than or equal to the height of described main cutting tooth 21.
Particularly, described wedge shape is crept into the difference in height of pointed tooth 22 and described main cutting tooth 21 between 0mm-2mm.
Particularly, the quantity of described wing 2 is 3-9.
Particularly, the described wedge shape leading flank and the trailing flank that creep into pointed tooth 22 is respectively an equilateral triangular structure.
Particularly, the length of side of described equilateral triangle structure is 4～8mm.
Particularly, described main cutting tooth 21 is cylindric.
Particularly, the diameter of described main cutting tooth 21 is 8-22mm.
Particularly, the diameter of described PDC drill bit is 88.9mm-444.5mm.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (8)
1. reinforced PDC drill bit, it is characterized in that: comprise drill body, the bizet of described drill body front end is provided with wing and hole for water spraying, and described wing is provided with a plurality of main cutting teeth that are arranged in order; Described main cutting tooth is diamond compact; Described main cutting tooth back is inlayed one group of wedge shape and is crept into pointed tooth; It is polycrystalline diamond that described wedge shape is crept into pointed tooth; Described wedge shape is crept into the height of pointed tooth more than or equal to the height of described main cutting tooth.
2. reinforced PDC drill bit as claimed in claim 1, it is characterized in that: described wedge shape is crept into the difference in height of pointed tooth and described main cutting tooth between 0mm-2mm.
3. reinforced PDC drill bit as claimed in claim 1 is characterized in that: the quantity of described wing is 3-9.
4. reinforced PDC drill bit as claimed in claim 1, it is characterized in that: leading flank and trailing flank that described wedge shape is crept into pointed tooth are respectively an equilateral triangular structure.
5. reinforced PDC drill bit as claimed in claim 4, it is characterized in that: the length of side of described equilateral triangle structure is 4～8mm.
6. such as any one described reinforced PDC drill bit of claim 1-5, it is characterized in that: being of described main cutting tooth is cylindric.
7. reinforced PDC drill bit as claimed in claim 6, it is characterized in that: the diameter of described main cutting tooth is 8-22mm.
8. such as any one described reinforced PDC drill bit of claim 1-5, it is characterized in that: the diameter of described PDC drill bit is 88.9mm-444.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220310237 CN202706923U (en) | 2012-06-29 | 2012-06-29 | Reinforced polycrystalline diamond compact (PDC) drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220310237 CN202706923U (en) | 2012-06-29 | 2012-06-29 | Reinforced polycrystalline diamond compact (PDC) drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202706923U true CN202706923U (en) | 2013-01-30 |
Family
ID=47587232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220310237 Expired - Lifetime CN202706923U (en) | 2012-06-29 | 2012-06-29 | Reinforced polycrystalline diamond compact (PDC) drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202706923U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888562A (en) * | 2016-04-29 | 2016-08-24 | 宜昌神达石油机械有限公司 | Inclination-proof PDC drill bit capable of easily removing chips |
| CN110242221A (en) * | 2019-07-01 | 2019-09-17 | 林正富 | A kind of PDC drill bit of the width scope of application |
-
2012
- 2012-06-29 CN CN 201220310237 patent/CN202706923U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888562A (en) * | 2016-04-29 | 2016-08-24 | 宜昌神达石油机械有限公司 | Inclination-proof PDC drill bit capable of easily removing chips |
| CN110242221A (en) * | 2019-07-01 | 2019-09-17 | 林正富 | A kind of PDC drill bit of the width scope of application |
| CN110242221B (en) * | 2019-07-01 | 2022-02-18 | 林正富 | PDC drill bit with wide application range |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |