CN205445476U - Novel oil drilling PDC drill bit - Google Patents
Novel oil drilling PDC drill bit Download PDFInfo
- Publication number
- CN205445476U CN205445476U CN201620276941.2U CN201620276941U CN205445476U CN 205445476 U CN205445476 U CN 205445476U CN 201620276941 U CN201620276941 U CN 201620276941U CN 205445476 U CN205445476 U CN 205445476U
- Authority
- CN
- China
- Prior art keywords
- drill bit
- pdc
- composite sheet
- wing
- utility
- 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
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 21
- 239000003208 petroleum Substances 0.000 claims abstract description 13
- 239000002131 composite material Substances 0.000 claims description 25
- 150000001875 compounds Chemical class 0.000 abstract 5
- 230000036346 tooth eruption Effects 0.000 abstract 3
- 230000002889 sympathetic Effects 0.000 abstract 1
- 230000035515 penetration Effects 0.000 description 4
- 239000011435 rock Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Abstract
The utility model belongs to the technical field of the petroleum geology well drilling and specifically relates to about a novel oil drilling PDC drill bit. The utility model aims to solve the technical problem that a novel oil drilling PDC drill bit that has than strong stability and the power of shocking resistance is provided, including drill bit main part, the operator wing, vice wing, the compound piece of minor diameter PDC, the compound piece of major diameter PDC, nozzle, all be equipped with the closed angle cutting teeth on the compound piece of minor diameter PDC, the compound piece of major diameter PDC, still be equipped with spacing hole in the drill bit main part. The utility model discloses a novel oil drilling PDC drill bit, reduced drill bit and the wall of a well contact stress, has reduced the drill bit and has taken place the probability sympathetic vibration stroke degree of vibration, so improved drill bit stability and the power of shocking resistance, and have the closed angle cutting teeth, and the drill bit is when the cutting, and the closed angle cutting teeth contacts earlier the compound pieces of other PDC of stratum and cuts, has improved mechanical drilling speed.
Description
Technical field
This utility model relates to petroleum geology drilling applications, especially with respect to a kind of Novel petroleum well drilling PDC drill bit.
Background technology
Now with the development of oil exploration technology, drill bit is also constantly updating, and has rifler, and the multiple drill bit of diamond etc. is of a great variety, uses difference to be suitable for the needs of different soil layer oil drilling.At present, PDC drill bit is widely used in oil, natural gas, geological drilling, achieves prominent using effect, and the present and the future is more widely applied.Conventional PDC drill bit has the advantages such as fast, the life-span length of rate of penetration in soft formation, but in relatively hard formation during drilling well, poor stability, impact resistance is weak, easily causes PDC cutting tooth to rupture, and drill bit rate of penetration reduces.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of Novel petroleum well drilling PDC drill bit with relatively stiff stability and anti-impact force.
This utility model solves above-mentioned technical problem and be the technical scheme is that a kind of Novel petroleum well drilling PDC drill bit, including drill main body, the operator wing, secondary wing, minor diameter PDC composite sheet, major diameter PDC composite sheet, nozzle, it is equipped with wedge angle cutting tooth in described minor diameter PDC composite sheet, major diameter PDC composite sheet, described drill main body is additionally provided with spacing hole.
Further, described spacing hole is positioned at the center of drill main body.
Further, a diameter of 13 millimeters of described spacing hole.
Further, described wedge angle cutting tooth depth is in minor diameter PDC composite sheet 0.5 millimeter.
Further, the described operator wing, secondary wing are spiral of Archimedes structure.
The beneficial effects of the utility model: a kind of Novel petroleum well drilling PDC drill bit of the present utility model has the operator wing and secondary wing, its planform is spiral of Archimedes, the power making drill bit present on the direction be perpendicular to the borehole wall is less than the situation of the straight knife wing, reduce drill bit and the contact stress of the borehole wall, the probability reducing drill bit generation vibration and extent of vibration, so improve stability of bit and anti-impact force；And having wedge angle cutting tooth, and drill bit is when cutting, wedge angle cutting tooth first contacts other PDC composite sheet of stratum and cuts, improves rate of penetration.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Shown in figure: 1-drill main body, 2-operates the wing, 3-pair wing, 4-minor diameter PDC composite sheet, 5-major diameter PDC composite sheet, 6-nozzle, 7-spacing hole.
Detailed description of the invention
With embodiment, utility model is further described in detail below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of Novel petroleum well drilling PDC drill bit of the present utility model, including drill main body 1, the operator wing 2, secondary wing 3, minor diameter PDC composite sheet 4, major diameter PDC composite sheet 5, nozzle 6, it is equipped with wedge angle cutting tooth in described minor diameter PDC composite sheet 4, major diameter PDC composite sheet 5, described drill main body 1 is additionally provided with spacing hole 7.
This utility model drill bit is at work, there is the operator wing 2 and secondary wing 3, and the planform of the operator wing 2 and secondary wing 3 is spiral of Archimedes, the power making drill bit present on the direction be perpendicular to the borehole wall is less than the situation of the straight knife wing, reduce drill bit and the contact stress of the borehole wall, the probability reducing drill bit generation vibration and extent of vibration, so improve stability of bit and anti-impact force；And there is wedge angle cutting tooth, and wedge angle cutting tooth has the wedge angle of dew end, global shape can be square, rhombus, polygon or any at least shape with a wedge angle, and drill bit is when cutting, wedge angle cutting tooth first contacts other PDC composite sheet of stratum and cuts, improves rate of penetration.What in this utility model real work, stress was bigger is minor diameter PDC composite sheet 4 and major diameter PDC composite sheet 5, because minor diameter PDC composite sheet 4 is the same with the height of major diameter PDC composite sheet 5, thus ensure that the area on cutting stratum does not increases because the diameter of composite sheet increases, because of diameter change greatly, it is anti-shearing and crush resistance strength all strengthens for major diameter PDC composite sheet 5 simultaneously；And in bit central, there is spacing hole 7, the so rock stratum of cutting and then form a rock pillar isometrical with spacing hole 7, drill slipping can be avoided.
The position of described spacing hole 7 can be outer end or the inner etc., and preferred embodiment, described spacing hole 7 is positioned at the center of drill main body 1.
In order to ensure rock pillar as far as possible little and be provided that enough restraints, preferred embodiment, a diameter of 13 millimeters of described spacing hole 7.
In order to carry the service life of wedge angle cutting tooth, preferred embodiment, described wedge angle cutting tooth depth has 0.5 millimeter in the height of minor diameter PDC composite sheet 4.Wedge angle cutting tooth so can be avoided too high and be subject to bigger shearing force.The described operator wing 2, secondary wing 3 are A Ji helix structure.
Claims (5)
1. a Novel petroleum well drilling PDC drill bit, it is characterized in that, including drill main body (1), the operator wing (2), secondary wing (3), minor diameter PDC composite sheet (4), major diameter PDC composite sheet (5), nozzle (6), it is equipped with wedge angle cutting tooth in described minor diameter PDC composite sheet (4), major diameter PDC composite sheet (5), described drill main body (1) is additionally provided with spacing hole (7).
A kind of Novel petroleum well drilling PDC drill bit the most according to claim 1, it is characterised in that described spacing hole (7) is positioned at the center of drill main body (1).
A kind of Novel petroleum well drilling PDC drill bit the most according to claim 2, it is characterised in that a diameter of 13 millimeters of described spacing hole (7).
4. according to a kind of Novel petroleum well drilling PDC drill bit described in Claims 2 or 3, it is characterised in that described wedge angle cutting tooth depth is in minor diameter PDC composite sheet (4) 0.5 millimeters.
5. according to a kind of Novel petroleum well drilling PDC drill bit described in Claims 2 or 3, it is characterised in that the described operator wing (2), secondary wing (3) are spiral of Archimedes structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620276941.2U CN205445476U (en) | 2016-04-05 | 2016-04-05 | Novel oil drilling PDC drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620276941.2U CN205445476U (en) | 2016-04-05 | 2016-04-05 | Novel oil drilling PDC drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205445476U true CN205445476U (en) | 2016-08-10 |
Family
ID=56606324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620276941.2U Expired - Fee Related CN205445476U (en) | 2016-04-05 | 2016-04-05 | Novel oil drilling PDC drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205445476U (en) |
-
2016
- 2016-04-05 CN CN201620276941.2U patent/CN205445476U/en not_active Expired - Fee Related
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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: 20160810 Termination date: 20170405 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |