CN207332769U - The PDC drill bit of one kind of multiple shape blending tooth designs - Google Patents
The PDC drill bit of one kind of multiple shape blending tooth designs Download PDFInfo
- Publication number
- CN207332769U CN207332769U CN201721226209.5U CN201721226209U CN207332769U CN 207332769 U CN207332769 U CN 207332769U CN 201721226209 U CN201721226209 U CN 201721226209U CN 207332769 U CN207332769 U CN 207332769U
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- China
- Prior art keywords
- wing
- tooth
- cutting
- drill bit
- cutting tooth
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Abstract
The utility model belongs to PDC drill bit technical field, the PDC drill bit of one kind of multiple shape blending tooth designs is disclosed, for solving the problems, such as that existing PDC drill bit stock-removing efficiency when creeping into gravel particle layer is low.The utility model includes the carcass being connected with connecting rod, multiple wings are provided with the carcass, some cutting tooths are provided with the outer end face of the wing, it is characterized in that, the angle of heel and backrake of cutting tooth on each wing are different, and the cutting tooth on each wing extend wing height it is different；The angle of heel and back rake angle of the cutting tooth corresponded on adjacent blades differ, and the height of the cutting tooth stretching wing corresponded on adjacent blades differs.
Description
Technical field
The utility model belongs to PDC drill bit technical field, and in particular to the PDC of one kind of multiple shape blending tooth designs is bored
Head.
Background technology
PDC (poly- diamond compact) drill bit is widely used in oil, a kind of drill bit in geology field, it has higher
Hardness, wearability and service life.The major way of PDC drill bit broken rock stone is chip rock, since it generally has 3-7 knife
The wing, more than ten of composite sheet, rock is inhomogeneous again, therefore PDC drill bit weakens at work there are violent oscillation crosswise
The efficiency of fractured rock.In order to suppress the oscillation crosswise of drill bit, part drill bit enhances gauge structure, makes the diameter of gauge structure
More bigger than the diameter of drill bit, gauge structure domain borehole wall large area is in close contact, so as to effectively inhibit oscillation crosswise.
In the case of harder on stratum, generally without using rock bit, because rock bit rate of penetration is slow, short life,
An extra bradawl operation is frequently resulted in, increases drilling time and operating cost.Therefore, for the harder place in stratum, usually
Using the faster PDC drill bit of rate of penetration, to improve bit speed.
Technical literature in the prior art on PDC is also more, such as the patent of Application No. 201420087416.7 is public
Open a kind of high efficiency PDC drill bit, including bit body, 6 wings, the nozzle of bit body upper end that are uniformly arranged on bit body
With the connector of bit body lower end, wing includes upper wing and the lower wing positioned at upper wing lower end, two is provided with upper wing
Chip tooth is arranged, often arranging chip tooth there are 4 chip teeth, and upper wing and lower wing are not parallel.
The patent of Application No. 20142008408.2 discloses a kind of PDC drill bit, including cylindrical bit body and is arranged on
Wing and nozzle on bit body, wing include upper wing and the lower wing below upper wing, are provided with and cut on upper wing
Consider tooth to be worth doing, the angle between the raceway groove of two neighboring lower wing formation and the central axes of bit body is more than 5 degree and is less than 35 degree.
The patent of Application No. 201420508187.1 discloses a kind of PDC drill bit, including organizes that matrix, runner, spray
Nozzle aperture, wing and chip tooth, wing are arranged on bit matrix, and wing includes chip portion and gauge, in the chip portion of wing
Chip tooth is provided with, gauge is connected with chip portion；Runner is formed between two wings, nozzle bore is arranged on bit matrix
On, further include gauge teeth and gauge lies low tooth, gauge teeth and the gauge tooth that lies low are arranged in gauge；Chip tooth main body is cylinder
Shape, one end are that the arc surface other end is plane, and chip tooth is horizontally installed on the both ends of wing, and plane one end is towards the outer of wing
Side, arc surface one end is towards the inner side of wing, and part is slipped into wing；Chip tooth is welded on wing；Damping tooth is further included,
Damping tooth is hard alloy, and damping tooth is embedded in the side of wing；Gauge teeth is arranged on the front end of gauge, the shape of gauge teeth
And mounting means is identical with chip tooth；The gauge tooth that lies low is arranged on the side of gauge；Gauge lies low tooth as cylinder, its one end
Face is arc surface, and other end is plane, gauge lie low tooth longitudinal axis it is vertical with the side of gauge teeth portion, gauge lies low tooth
Arc surface inlayed towards the outside of gauge, planar ends inside gauge.
The angle of the back rake angle of each cutting teeth is all identical on PDC drill bit at present, and each inclined teeth is uniformly distributed
On wing, but this structure, since the distribution of each rubble is very in disorder, causes common when rubble geological stratification is cut
PDC drill bit when metalling is crept into, since the stress of each cutting tooth is different, cause stock-removing efficiency low.
Utility model content
The utility model is low in order to solve the problems, such as existing PDC drill bit stock-removing efficiency when creeping into metalling, and provides one
The PDC drill bit of kind various shapes combination tooth design, especially suitable for the geological drilling of metalling, has the high spy of drilling efficiency
Point.
To solve technical problem, technical solution is used by the utility model：
The PDC drill bit of one kind of multiple shape blending teeth design, including the carcass being connected with connecting rod, are set on the carcass
There are multiple wings, some cutting tooths are provided with the outer end face of the wing, it is characterised in that the cutting tooth on each wing
Angle of heel and backrake it is different, and the cutting tooth on each wing extend wing height it is different；
The angle of heel and back rake angle of the cutting tooth corresponded on adjacent blades differ, and the cutting corresponded on adjacent blades
The height that tooth stretches out wing differs.
The cross sectional shape of adjacent cutting tooth is different on each wing, the cutting tooth corresponded on adjacent blades
Cross sectional shape is different.
The cross sectional shape of the cutting tooth is circle, ellipse, track type, dolioform, fan-shaped, triangle, rectangle, just
Square, trapezoidal or diamond shape.
The rear-inclined of cutting tooth on the wing is 10 ° -15 °.
Multiple auxiliary cutting elements are mounted on the two sides of the wing, multiple auxiliary cutting elements are inclined to be connected to knife
On the two sides of the wing, and the installation site of each auxiliary cutting element forms an angled straight lines.
The distance between auxiliary cutting element and carcass gradually increase under upper.
Compared with prior art, the invention has the advantages that：
The PDC drill bit of the various shapes combination tooth design of the utility model includes the carcass being connected with connecting rod, the tire
Multiple wings are provided with body, some cutting tooths are provided with the outer end face of the wing, it is characterised in that on each wing
Cutting tooth angle of heel and backrake it is different, and the cutting tooth on each wing extend wing height it is each
Differ；The angle of heel and back rake angle of the cutting tooth corresponded on adjacent blades differ, and mutually right on adjacent blades
The height that the cutting tooth answered stretches out wing differs, and the uniform force of each cutting tooth is improved in use, because
This disclosure satisfy that the stratigraphical drilling of gravel particle layer, and the uniform force improved in gravel particle layer geological drilling is imitated with drilling
Rate.
Brief description of the drawings
Fig. 1 is the vertical view figure structure schematic representation of the utility model；
Fig. 2 is the structure diagram that auxiliary cutting element is installed on wing；
Fig. 3 is the schematic diagram of the back rake angle of cutting tooth；
Marked in figure：1st, carcass, 2, wing, 3, cutting tooth, 4, hydrophthalmia, 5, auxiliary cutting element.
Embodiment
With reference to embodiment, the utility model will be further described, and described embodiment is only that this practicality is new
Type part of the embodiment, is not whole embodiments.Based on the embodiment in the utility model, the ordinary skill people of this area
Other embodiments used that member is obtained without making creative work, belong to the protection model of the utility model
Enclose.
With reference to attached drawing, the PDC drill bit of the various shapes combination tooth design of the utility model, including the tire being connected with connecting rod
Body 1, multiple wings 2 are provided with the carcass 1, and forming row between adjacent wing 2 cuts passage, is also provided with carcass 1
Hydrophthalmia 4, coolant are sprayed from hydrophthalmia 4, for being cooled down to the cutting tooth 3 on wing, while drive broken cut in time from row
Cut in passage and discharge, some cutting tooths 3 are provided with the outer end face of the wing, the inclination of the cutting tooth 3 on each wing 2
Angle and rear-inclined (α in such as attached drawing 3) angle are different, and the cutting tooth 3 on each wing 2 extends the height of wing 2
Spend different；The angle of heel and back rake angle of the cutting tooth 3 corresponded on adjacent blades 2 differ, and on adjacent blades 2
The height that the cutting tooth 3 corresponded stretches out wing 2 differs.
The PDC drill bit of the various shapes combination tooth design of the utility model includes the carcass being connected with connecting rod, the tire
Multiple wings are provided with body, some cutting tooths are provided with the outer end face of the wing, it is characterised in that on each wing
Cutting tooth angle of heel and backrake it is different, and the cutting tooth on each wing extend wing height it is each
Differ；The angle of heel and back rake angle of the cutting tooth corresponded on adjacent blades differ, and mutually right on adjacent blades
The height that the cutting tooth answered stretches out wing differs, and the uniform force of each cutting tooth is improved in use, because
This disclosure satisfy that the stratigraphical drilling of gravel particle layer, and the uniform force improved in gravel particle layer geological drilling is imitated with drilling
Rate.
As a kind of preferable mode of the utility model, each not phase of the cross sectional shape of adjacent cutting tooth 3 on each wing 2
Together, the cross sectional shape of the cutting tooth 3 corresponded on adjacent blades 2 is different.
Wherein the cross sectional shape of cutting tooth 3 for circle, ellipse, track type, dolioform, fan-shaped, triangle, rectangle,
Square, trapezoidal or diamond shape.
As a kind of preferable mode of the utility model, the rear-inclined of the cutting tooth 3 on the wing 2 is 10 ° -15 °.
Multiple auxiliary cutting elements 5 are mounted on the two sides of the wing 2 of the utility model, multiple auxiliary cutting elements 5 incline
Oblique is connected on the two sides of wing 2, and the installation site of each auxiliary cutting element 5 forms an angled straight lines.
As a kind of preferable mode of the utility model, the distance between auxiliary cutting element 5 and carcass 1 under upper gradually
Increase, i other words the distance between auxiliary cutting element and carcass are along from the cutting end face of carcass to the connecting rod being connected with drill bit
Direction gradually increase.The cutting that can be further improved to gravel particle stratum by auxiliary cutting element in drilling process is imitated
Rate, meets stock-removing efficiency of the drill bit to gravel particle geological stratification.
Simultaneously because the special geology structure of gravel particle geological stratification, the structure design of the cutting tooth of the utility model, energy
It is enough as far as possible the stress of each cutting tooth and the degree of wear to be approached, the stationarity of drill bit is on the one hand improved, is on the other hand improved
The service life of drill bit.
Embodiment one
The PDC drill bit of the various shapes combination tooth design of the present embodiment, including the carcass being connected with connecting rod, the carcass
On be provided with multiple wings, some cutting tooths are provided with the outer end face of the wing, the side of the cutting tooth on each wing
Inclination angle and backrake are different, and the cutting tooth on each wing extend wing height it is different；It is adjacent
The angle of heel and back rake angle of the cutting tooth corresponded on wing differ, and the cutting tooth corresponded on adjacent blades is stretched
The height for going out wing differs.
Embodiment two
The PDC drill bit of the various shapes combination tooth design of the present embodiment, including the carcass being connected with connecting rod, the carcass
On be provided with multiple wings, some cutting tooths are provided with the outer end face of the wing, the side of the cutting tooth on each wing
Inclination angle and backrake are different, and the cutting tooth on each wing extend wing height it is different；It is adjacent
The angle of heel and back rake angle of the cutting tooth corresponded on wing differ, and the cutting tooth corresponded on adjacent blades is stretched
The height for going out wing differs；The cross sectional shape of adjacent cutting tooth is different on each wing, mutually right on adjacent blades
The cross sectional shape for the cutting tooth answered is different.
Embodiment three
The PDC drill bit of the various shapes combination tooth design of the present embodiment, including the carcass being connected with connecting rod, the carcass
On be provided with multiple wings, some cutting tooths are provided with the outer end face of the wing, the side of the cutting tooth on each wing
Inclination angle and backrake are different, and the cutting tooth on each wing extend wing height it is different；It is adjacent
The angle of heel and back rake angle of the cutting tooth corresponded on wing differ, and the cutting tooth corresponded on adjacent blades is stretched
The height for going out wing differs；The cross sectional shape of adjacent cutting tooth is different on each wing, mutually right on adjacent blades
The cross sectional shape for the cutting tooth answered is different；The cross sectional shape of the cutting tooth for circle, ellipse, track type, it is dolioform,
Sector, triangle, rectangle, square, trapezoidal or diamond shape.
Example IV
The PDC drill bit of the various shapes combination tooth design of the present embodiment, including the carcass being connected with connecting rod, the carcass
On be provided with multiple wings, some cutting tooths are provided with the outer end face of the wing, the side of the cutting tooth on each wing
Inclination angle and backrake are different, and the cutting tooth on each wing extend wing height it is different；It is adjacent
The angle of heel and back rake angle of the cutting tooth corresponded on wing differ, and the cutting tooth corresponded on adjacent blades is stretched
The height for going out wing differs；The cross sectional shape of adjacent cutting tooth is different on each wing, mutually right on adjacent blades
The cross sectional shape for the cutting tooth answered is different；The cross sectional shape of the cutting tooth for circle, ellipse, track type, it is dolioform,
Sector, triangle, rectangle, square, trapezoidal or diamond shape；The rear-inclined of cutting tooth on the wing is 10 °.
Embodiment six
The PDC drill bit of the various shapes combination tooth design of the present embodiment, including the carcass being connected with connecting rod, the carcass
On be provided with multiple wings, some cutting tooths are provided with the outer end face of the wing, the side of the cutting tooth on each wing
Inclination angle and backrake are different, and the cutting tooth on each wing extend wing height it is different；It is adjacent
The angle of heel and back rake angle of the cutting tooth corresponded on wing differ, and the cutting tooth corresponded on adjacent blades is stretched
The height for going out wing differs；The rear-inclined of cutting tooth on the wing is 15 °.
Embodiment seven
The PDC drill bit of the various shapes combination tooth design of the present embodiment, including the carcass being connected with connecting rod, the carcass
On be provided with multiple wings, some cutting tooths are provided with the outer end face of the wing, the side of the cutting tooth on each wing
Inclination angle and backrake are different, and the cutting tooth on each wing extend wing height it is different；It is adjacent
The angle of heel and back rake angle of the cutting tooth corresponded on wing differ, and the cutting tooth corresponded on adjacent blades is stretched
The height for going out wing differs；The cross sectional shape of adjacent cutting tooth is different on each wing, mutually right on adjacent blades
The cross sectional shape for the cutting tooth answered is different；The cross sectional shape of the cutting tooth for circle, ellipse, track type, it is dolioform,
Sector, triangle, rectangle, square, trapezoidal or diamond shape；The rear-inclined of cutting tooth on the wing is 12 °.
Embodiment eight
On the basis of any of the above-described embodiment, multiple auxiliary cutting elements are mounted on the two sides of the wing,
Multiple auxiliary cutting elements are inclined to be connected on the two sides of wing, and the installation site of each auxiliary cutting element forms one and inclines
Skew lines.
Embodiment nine
On the basis of embodiment eight, the distance between auxiliary cutting element and carcass gradually increase under upper.
Claims (6)
1. the PDC drill bit of one kind of multiple shape blending teeth design, including the carcass being connected with connecting rod, it is provided with the carcass
Multiple wings, are provided with some cutting tooths on the outer end face of the wing, it is characterised in that cutting tooth on each wing
Angle of heel and backrake are different, and the cutting tooth on each wing extend wing height it is different；Phase
The angle of heel and back rake angle of the cutting tooth corresponded on adjacent wing differ, and the cutting tooth corresponded on adjacent blades
The height for stretching out wing differs.
2. the PDC drill bit of various shapes combination tooth design according to claim 1, it is characterised in that phase on each wing
The cross sectional shape of adjacent cutting tooth is different, and the cross sectional shape of the cutting tooth corresponded on adjacent blades is different.
3. the PDC drill bit of various shapes combination tooth design according to claim 2, it is characterised in that the cutting tooth
Cross sectional shape is circle, ellipse, track type, dolioform, fan-shaped, triangle, rectangle, square, trapezoidal or diamond shape.
4. the PDC drill bit of various shapes combination tooth design according to claim 1, it is characterised in that on the wing
The rear-inclined of cutting tooth is 10 ° -15 °.
5. the PDC drill bit of the various shapes combination tooth design according to any one of claim 1-4, it is characterised in that institute
State and multiple auxiliary cutting elements are mounted on the two sides of wing, the inclined two sides for being connected to wing of multiple auxiliary cutting elements
On, and the installation site of each auxiliary cutting element forms an angled straight lines.
6. the PDC drill bit of various shapes combination tooth according to claim 5 design, it is characterised in that auxiliary cutting element with
The distance between carcass gradually increases under upper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721226209.5U CN207332769U (en) | 2017-09-23 | 2017-09-23 | The PDC drill bit of one kind of multiple shape blending tooth designs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721226209.5U CN207332769U (en) | 2017-09-23 | 2017-09-23 | The PDC drill bit of one kind of multiple shape blending tooth designs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207332769U true CN207332769U (en) | 2018-05-08 |
Family
ID=62369435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721226209.5U Expired - Fee Related CN207332769U (en) | 2017-09-23 | 2017-09-23 | The PDC drill bit of one kind of multiple shape blending tooth designs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207332769U (en) |
-
2017
- 2017-09-23 CN CN201721226209.5U patent/CN207332769U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180508 Termination date: 20190923 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |