CN207160988U - The PDC drill bit that a kind of nose is strengthened - Google Patents
The PDC drill bit that a kind of nose is strengthened Download PDFInfo
- Publication number
- CN207160988U CN207160988U CN201721226205.7U CN201721226205U CN207160988U CN 207160988 U CN207160988 U CN 207160988U CN 201721226205 U CN201721226205 U CN 201721226205U CN 207160988 U CN207160988 U CN 207160988U
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- China
- Prior art keywords
- boss
- nose
- drill bit
- carcass
- pdc drill
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Abstract
The utility model belongs to PDC drill bit technical field, discloses the PDC drill bit that a kind of nose is strengthened, for solving the problems, such as that existing PDC drill bit causes well center drilling efficiency low because nose wears.The utility model includes carcass, multiple wings are provided with the carcass, some cutting tooths are installed on the wing, the upper surface protuberance of carcass has nose, the nose is connected with tapered boss, the inside of the boss offers cavity, the outer surface of the boss is provided with least two strip gabs being obliquely installed, the strip gab connects with cavity, the diamond cutting extended to outside boss surface is installed at each strip gab to chip, diamond cutting is chipped to be parallel to each other with strip gab.
Description
Technical field
The utility model belongs to PDC drill bit technical field, and in particular to the PDC drill bit that a kind of nose is strengthened.
Background technology
PDC (poly- diamond compact) drill bit is widely used in oil, a kind of drill bit in geology field, and it has higher
Hardness, wearability and service life.The major way of PDC drill bit broken rock stone is chip rock, because it typically has 3-7 knife
The wing, more than ten of composite sheet, rock is inhomogeneous again, therefore PDC drill bit has violent oscillation crosswise at work, weakens
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, typically 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, generally
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 axis 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, in addition to gauge teeth and gauge lain low tooth, and 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；Also include damping tooth,
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.
For PDC drill bit, because cutting tooth can not be covered with the core of bit upper end, therefore the nose of PDC drill bit needs
The responsibility of the oculocentric cutting of well is undertaken, and nose is merely able to by the way of impact carry out well center impact grinding,
But after prolonged, nose abrasion quite seriously causes to reduce for the oculocentric impact grinding efficiency of well, so as to lead
The center of drilling process well is caused the situation of projection occur, the basic reason that projection occurs makes nose drop center crushing efficiency
It is low, and then influence the rate of penetration of this drill bit.
Utility model content
The utility model causes well center drilling efficiency is low to ask to solve existing PDC drill bit because nose wears
Topic, and the PDC drill bit that a kind of nose is strengthened is provided, it is possible to increase the oculocentric drilling efficiency of well.
To solve technical problem, technical scheme is used by the utility model：
The PDC drill bit that a kind of nose is strengthened, including carcass, multiple wings are provided with the carcass, are pacified on the wing
Equipped with some cutting tooths, the upper surface protuberance of carcass has nose, it is characterised in that the nose is connected with tapered reinforcement
Block, the inside of the boss offer cavity, and the outer surface of the boss is provided with least two bar shapeds being obliquely installed
Opening, the strip gab are connected with cavity, and the Buddha's warrior attendant extended to outside boss surface is provided with each strip gab
Stone cutting blade, diamond cutting is chipped to be parallel to each other with strip gab.
The diamond cutting chip extend the distance on boss surface from the tip of boss to the root of boss by
It is cumulative to add.
The helical flow path for being internally provided with downward spiral of the boss, in the lower end and carcass of the helical flow path
Cooling liquid flowing channel is connected, and multiple spray orifices being interconnected with helical flow path are provided with the inwall of the boss.
The hand of spiral of the helical flow path is opposite with the rotation direction of carcass.
The spray orifice is inclined to be opened on the inwall of boss.
The diamond cutting, which is chipped, to be sintered on boss.
Compared with prior art, the invention has the advantages that：
In use, boss follows carcass to rotate together to the PDC drill bit that nose of the present utility model is strengthened, in height
Punching press can either be carried out during speed rotation to well by the tip of boss to crush, after tip enters well center
By diamond cutting chip and can it is enough to carry out cutting to stratum broken, so as to improve the oculocentric drilling efficiency of well, and then improve
The drilling efficiency of whole drill bit.
Brief description of the drawings
Fig. 1 is outline structural diagram of the present utility model；
Fig. 2 is the outline structural diagram of boss of the present utility model；
Fig. 3 is the internal structure schematic diagram of boss of the present utility model；
Marked in figure：1st, connecting rod, 2, carcass, 3, wing, 4, cutting tooth, 5, gauge teeth, 6, hole for water spraying, 7, boss,
8th, nose, 9, strip gab, 10, diamond cutting chip, 11, cavity, 12, helical duct, 13, cooling liquid flowing channel connection.
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, it 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 under the premise of creative work is not made, belong to protection model of the present utility model
Enclose.
With reference to accompanying drawing, the utility model includes carcass 2, and wherein carcass 2 is connected with each other by connecting rod 1 and drilling rod, described
Multiple wings 3 are evenly distributed with carcass 2, wherein, row is formed between the wing 3 of the phase tinkling of pieces of jade and cuts passage, the upper surface of carcass and row
Cut and hole for water spraying 6 is provided with passage, coolant is delivered to each water spray by cooling liquid by the cooling liquid flowing channel 13 in carcass 2
Hole 6, coolant sprays from hole for water spraying, and so as to be cooled down to cutting tooth 4, while coolant can also drive rubble
With the flowing of soil, it is easy to cut passage discharge from the row between wing 3 in time, some cutting tooths 4 and gauge is provided with wing 3
Tooth 5, the upper surface protuberance of carcass 2 have nose 8, and the nose 8 is connected with tapered boss 7, the inside of the boss 7
Cavity 11 is offered, the outer surface of the boss 7 is provided with least two strip gabs 9 being obliquely installed, is used as this practicality
A kind of new preferable mode, each strip gab 9 tilt along same direction, and the strip gab 9 connects with cavity 11, often
The diamond cutting extended to outside the surface of boss 7 is installed at one strip gab 9 and chips 10, diamond cutting is chipped 10 and bar
Shape opening 9 is parallel to each other.
In use, boss follows carcass to rotate together to the PDC drill bit that nose of the present utility model is strengthened, in height
Punching press can either be carried out during speed rotation to well by the tip of boss to crush, after tip enters well center
By diamond cutting chip and can it is enough to carry out cutting to stratum broken, so as to improve the oculocentric drilling efficiency of well, and then improve
The drilling efficiency of whole drill bit.
As a kind of preferable mode of the utility model, in order to improve the stock-removing efficiency on well center stratum, the Buddha's warrior attendant
The distance that stone cutting blade 10 extends the surface of boss 7 gradually increases from the tip of boss 7 to the root of boss 7.
The helical flow path 12 for being internally provided with downward spiral of boss 7 of the present utility model, the helical flow path 12
Lower end connects with the cooling liquid flowing channel 13 in carcass 2, is provided with and multiple is mutually interconnected with helical flow path on the inwall of the boss 7
Logical spray orifice.By the design of helical flow path and spray orifice, diamond cutting can either be chipped and cooled down, while and can is enough to cutting
Broken cut entered after cutting in cavity is washed away, and is easy to the timely discharge of chip.
In order to improve to the broken rinse capability cut, the hand of spiral of the helical flow path 13 and the rotation direction phase of carcass 2
Instead.
As a kind of preferable mode of the utility model, the spray orifice is inclined to be opened on the inwall of boss 11.
As a kind of mode of selection of the utility model, the diamond cutting, which is chipped, 10 to be sintered on boss 7.
Embodiment one
The PDC drill bit that the nose of the present embodiment is strengthened, including carcass, multiple wings, the knife are provided with the carcass
Some cutting tooths are installed, the upper surface protuberance of carcass has nose, and the nose is connected with tapered boss, described on the wing
The inside of boss offers cavity, and the outer surface of the boss is provided with least two strip gabs being obliquely installed, institute
State strip gab to connect with cavity, the Diamond Cutting extended to outside boss surface is installed at each strip gab
Piece, diamond cutting is chipped to be parallel to each other with strip gab.
Embodiment two
The PDC drill bit that the nose of the present embodiment is strengthened, including carcass, multiple wings, the knife are provided with the carcass
Some cutting tooths are installed, the upper surface protuberance of carcass has nose, and the nose is connected with tapered boss, described on the wing
The inside of boss offers cavity, and the outer surface of the boss is provided with three strip gabs being obliquely installed, the bar
Shape opening is connected with cavity, and the diamond cutting extended to outside boss surface is provided with each strip gab and is chipped, gold
Hard rock cutting blade is parallel to each other with strip gab；The diamond cutting, which is chipped, extends the distance on boss surface from boss
Tip gradually increases to the root of boss.
Embodiment three
The PDC drill bit that the nose of the present embodiment is strengthened, including carcass, multiple wings, the knife are provided with the carcass
Some cutting tooths are installed, the upper surface protuberance of carcass has nose, and the nose is connected with tapered boss, described on the wing
The inside of boss offers cavity, and the outer surface of the boss is provided with 2 strip gabs being obliquely installed, the bar shaped
Opening is connected with cavity, and the diamond cutting extended to outside boss surface is provided with each strip gab and is chipped, Buddha's warrior attendant
Stone cutting blade is parallel to each other with strip gab；The diamond cutting, which is chipped, extends the distance on boss surface from the point of boss
Holding the root of boss gradually increases；The helical flow path for being internally provided with downward spiral of the boss, the spiral flow
The lower end in road connects with the cooling liquid flowing channel in carcass, is provided with and multiple is mutually interconnected with helical flow path on the inwall of the boss
Logical spray orifice.
Example IV
The PDC drill bit that the nose of the present embodiment is strengthened, including carcass, multiple wings, the knife are provided with the carcass
Some cutting tooths are installed, the upper surface protuberance of carcass has nose, and the nose is connected with tapered boss, described on the wing
The inside of boss offers cavity, and the outer surface of the boss is provided with 4 strip gabs being obliquely installed, the bar shaped
Opening is connected with cavity, and the diamond cutting extended to outside boss surface is provided with each strip gab and is chipped, Buddha's warrior attendant
Stone cutting blade is parallel to each other with strip gab；The diamond cutting, which is chipped, extends the distance on boss surface from the point of boss
Holding the root of boss gradually increases；The helical flow path for being internally provided with downward spiral of the boss, the spiral flow
The lower end in road connects with the cooling liquid flowing channel in carcass, is provided with and multiple is mutually interconnected with helical flow path on the inwall of the boss
Logical spray orifice；The hand of spiral of the helical flow path is opposite with the rotation direction of carcass.
Embodiment five
On the basis of embodiment three or example IV, the spray orifice is inclined to be opened on the inwall of boss.
Embodiment six
On the basis of any of the above-described embodiment, the diamond cutting, which is chipped, to be sintered on boss.
Claims (6)
1. the PDC drill bit that a kind of nose is strengthened, including carcass, multiple wings are provided with the carcass, are installed on the wing
There are some cutting tooths, the upper surface protuberance of carcass has nose, it is characterised in that the nose is connected with tapered boss,
The inside of the boss offers cavity, and the outer surface of the boss is provided with least two bar shapeds being obliquely installed and opened
Mouthful, the strip gab is connected with cavity, and the diamond extended to outside boss surface is provided with each strip gab
Cutting blade, diamond cutting is chipped to be parallel to each other with strip gab.
2. the PDC drill bit that nose according to claim 1 is strengthened, it is characterised in that the diamond cutting, which is chipped, to be extended
The distance on boss surface gradually increases from the tip of boss to the root of boss.
3. the PDC drill bit that nose according to claim 1 is strengthened, it is characterised in that the boss is internally provided with
The helical flow path of downward spiral, the lower end of the helical flow path connect with the cooling liquid flowing channel in carcass, the boss it is interior
Multiple spray orifices being interconnected with helical flow path are provided with wall.
4. the PDC drill bit that nose according to claim 3 is strengthened, it is characterised in that the hand of spiral of the helical flow path
It is opposite with the rotation direction of carcass.
5. the PDC drill bit that the nose according to claim 3 or 4 is strengthened, it is characterised in that the spray orifice is inclined to be opened in
On the inwall of boss.
6. the PDC drill bit that nose according to claim 1 is strengthened, it is characterised in that the diamond cutting, which is chipped, to be sintered in
On boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721226205.7U CN207160988U (en) | 2017-09-23 | 2017-09-23 | The PDC drill bit that a kind of nose is strengthened |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721226205.7U CN207160988U (en) | 2017-09-23 | 2017-09-23 | The PDC drill bit that a kind of nose is strengthened |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207160988U true CN207160988U (en) | 2018-03-30 |
Family
ID=61723611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721226205.7U Expired - Fee Related CN207160988U (en) | 2017-09-23 | 2017-09-23 | The PDC drill bit that a kind of nose is strengthened |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207160988U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538128A (en) * | 2019-01-18 | 2019-03-29 | 沧州格锐特钻头有限公司 | A kind of shockproof PDC drill bit |
-
2017
- 2017-09-23 CN CN201721226205.7U patent/CN207160988U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538128A (en) * | 2019-01-18 | 2019-03-29 | 沧州格锐特钻头有限公司 | A kind of shockproof PDC drill bit |
| CN109538128B (en) * | 2019-01-18 | 2024-04-02 | 沧州格锐特钻头有限公司 | Shockproof PDC drill bit |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180330 Termination date: 20190923 |