CN207332771U - A kind of center has the PDC drill bit of supporting structure - Google Patents
A kind of center has the PDC drill bit of supporting structure Download PDFInfo
- Publication number
- CN207332771U CN207332771U CN201721246531.4U CN201721246531U CN207332771U CN 207332771 U CN207332771 U CN 207332771U CN 201721246531 U CN201721246531 U CN 201721246531U CN 207332771 U CN207332771 U CN 207332771U
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- China
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- cavity
- drill bit
- mounting blocks
- pdc drill
- carcass
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Abstract
The utility model belongs to PDC drill bit technical field, and disclosing a kind of center has the PDC drill bit of supporting structure, and for solving the problems, such as existing PDC drill bit, there is steering capability variation in use.The utility model includes connecting rod and carcass, wing is evenly distributed with carcass, there is what gauge teeth of cutting tooth on wing, there is guide pad in carcass upper surface, and installation cavity is offered on carcass, mounting blocks are provided with installation cavity, mounting blocks offer intercommunicating pore and cavity, the guide rod of guide pad lower end is connected to through intercommunicating pore and is connected with the piston in cavity, cavity is separated the first cavity and the second cavity by piston, and the first cavity and the second cavity are respectively through the first ascending pipe and the second ascending pipe and flow passage.The utility model can be adjusted guide pad by central support structure, so as to meet the guiding role of different geological states, changes the distribution of force of drill bit, improves the deviation-correcting function of drill bit.
Description
Technical field
The utility model belongs to PDC drill bit technical field, and in particular to a kind of center has the PDC drill bit of supporting structure.
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.
Current drill bit all has certain steering capability, but during actual use, due to earth formation
Complexity change, the targeting part positioned at bit central is easy to wear in use, causes drill bit to be oriented to after use
The problem of degradation.
Utility model content
The utility model in order to solve the problems, such as existing PDC drill bit in use there is steering capability variation, and
There is provided a kind of center has the PDC drill bit of supporting structure, and by central support structure, guide pad can be adjusted, so that
Meet the guiding role of different geological states；At the same time oriented module central support structure effect, by adjusting oriented module
Angle and direction, change the distribution of force of drill bit, improve the deviation-correcting function of drill body.
To solve technical problem, technical solution is used by the utility model：
A kind of center has the PDC drill bit of supporting structure, includes the connecting rod and carcass of interconnection, on the carcass
Even to be distributed with multiple wings, covered with some cutting tooths, the hypomere of wing is connected with gauge teeth for the epimere of wing, on the carcass
The center of end face is provided with guide pad, it is characterised in that offers installation cavity, the installation along vertical direction on the carcass
Intracavitary is provided with mounting blocks, and the mounting blocks offer interconnected intercommunicating pore and cavity, are connected to leading for guide pad lower end
Bar is connected through intercommunicating pore and with the piston in cavity, and cavity is separated into superposed first cavity and positioned at lower part by piston
The second cavity, the first cavity and the second cavity are respectively through the first ascending pipe and the second ascending pipe and the stream for being passed through coolant
Road connects.
The mounting blocks are installed in installation cavity through fixed block, and fixed block will be formed between mounting blocks and installation cavity
Cavity is separated into independent the first injection pressure chamber and the second injection pressure chamber, and the first injection pressure chamber and the second injection pressure chamber are symmetrically distributed in installation
The left and right sides of block, the first injection pressure chamber and the second injection pressure chamber are respectively through the 3rd ascending pipe and the 4th ascending pipe and flow passage.
Check valve is mounted on the first, second, third and fourth ascending pipe.
Two through holes are offered on the piston, check valve is equipped in each through hole, wherein a check valve controls
Liquid in first cavity enters all the second cavitys, and another check valve controls the liquid in the second cavity to enter the first cavity
It is interior.
Sealing ring is provided between the guide rod and intercommunicating pore, sealing ring is provided between the piston and cavity.
Sealing device is provided between the fixed block and mounting blocks.
The sealing device is elastic rubber gasket.
The sealing device includes the first contiguous block and the second contiguous block, and the first contiguous block is connected with mounting blocks, and second connects
Connect block to be connected with fixed block, the elastic rubber layer that section is in " X " type is provided between the first contiguous block and the second contiguous block.
Compared with prior art, the invention has the advantages that：
The center of the utility model has the PDC drill bit of supporting structure in use, passes through the first ascending pipe and the
Two ascending pipes can drive guide pad to be moved, so that the distance of the carcass of guide pad stretching is adjusted, so as to more not
Same geological conditions is oriented to；Liquid, which can be injected, by the 3rd ascending pipe and the 4th ascending pipe at the same time can drive guide pad
The position on carcass, so as to change the Impact direction of drill bit, so as to adjust the position of drill bit drilling, reaches compensation correction
Effect.
Brief description of the drawings
Fig. 1 is the outline structural diagram of the utility model；
Fig. 2 is the supporting structure of the utility model and the connection diagram of carcass；
Fig. 3 is the structure diagram of one embodiment of sealing device of the utility model；
Marked in figure：1st, connecting rod, 2, carcass, 3, wing, 4, cutting tooth, 5, gauge teeth, 6, hole for water spraying, 7, guide pad,
8th, installation cavity, 9, mounting blocks, 10, guide rod, 11, piston, the 12, first cavity, the 13, second cavity, the 14, first ascending pipe, 15,
Two ascending pipes, 16, fixed block, 17, sealing device, the 18, first injection pressure chamber, the 19, second injection pressure chamber, the 20, the 3rd ascending pipe, 21,
4th ascending pipe, 22, check valve, 23, runner, 24, sprue, the 25, first contiguous block, the 26, second contiguous block, 27, gasket.
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 utility model includes connecting rod 1 and the carcass 2 being connected with each other, and is evenly distributed with the carcass 2
Multiple wings 3, 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, which cut, is provided with water spray on passage
Hole, cooling liquid are entered in runner 23 by sprue 24, and coolant is delivered to each hole for water spraying 6 by runner 23, cold
But liquid is sprayed from hole for water spraying, so that cutting tooth 4 can either be cooled down, while coolant can also drive rubble and soil
Flowing, easy to cut passage discharge from the row between wing 3 in time, the epimere of wing 3 covered with some cutting tooths 4, wing 2
Hypomere is connected with gauge teeth 5, and the center of 2 upper surface of carcass is provided with guide pad 7, along vertical direction on the carcass 1
Installation cavity 8 is offered, mounting blocks 9 (mounting blocks and guide rod form supporting structure), the mounting blocks are provided with the installation cavity 8
9 offer interconnected intercommunicating pore and cavity, be connected to the guide rod 10 of 7 lower end of guide pad through intercommunicating pore and with cavity
Piston 11 connects, and cavity is separated into superposed first cavity 12 and the second cavity 13 positioned at lower part by piston 11, and first
12 and second cavity 13 of cavity connects through the first ascending pipe 14 and the second ascending pipe 15 with the runner 23 for being passed through coolant respectively
It is logical.
As a kind of preferable mode of the utility model, the mounting blocks 9 are installed in installation cavity 8 through fixed block 16, and
And the cavity formed between mounting blocks 9 and installation cavity 8 is separated into the first independent injection pressure chamber 18 and the second injection pressure by fixed block 16
Chamber 19, the first injection pressure chamber 18 and the second injection pressure chamber 19 are symmetrically distributed in the left and right sides of mounting blocks 9, the first injection pressure chamber 18 and
Two injection pressure chambers 19 are connected through the 3rd ascending pipe 20 and the 4th ascending pipe 21 with runner 23 respectively.
As a kind of preferable mode of the utility model, mounting blocks 9 are installed in installation cavity 8 through fixed block 16, and solid
Determine block 16 and the cavity formed between mounting blocks 9 and installation cavity 8 is separated into mutually independent first injection pressure chamber 18, the second injection pressure chamber
19th, the 3rd injection pressure chamber and the 4th injection pressure chamber, the first injection pressure chamber 18 and the second injection pressure chamber 19 are symmetrically distributed in the left and right of mounting blocks 9
Both sides, the 3rd injection pressure chamber and the 4th injection pressure chamber are symmetrically distributed in the front and rear sides of mounting blocks 9, the first injection pressure chamber 18 and the second note
Pressure chamber 19 is connected through the 3rd ascending pipe 20 and the 4th ascending pipe 21 with runner 23 respectively；3rd injection pressure chamber and the 4th injection pressure chamber difference
Through the 5th ascending pipe and the 6th ascending pipe and flow passage, it is enable to from the position of four direction adjusting guide pad.
The center of the utility model has the PDC drill bit of supporting structure in use, passes through the first ascending pipe and the
Two ascending pipes can drive guide pad to be moved, so that the distance of the carcass of guide pad stretching is adjusted, so as to more not
Same geological conditions is oriented to；Liquid, which can be injected, by the 3rd ascending pipe and the 4th ascending pipe at the same time can drive guide pad
The position on carcass, so as to change the Impact direction of drill bit, so as to adjust the position of drill bit drilling, reaches compensation correction
Effect.
For the ease of being controlled, check valve is mounted on the first, second, third and fourth ascending pipe, first,
Second, third is controlled opening and closing with the check valve on the 4th ascending pipe by ground controller.
As a kind of mode of selection of the utility model, two through holes are offered on the piston 11, in each through hole
Check valve 22 is equipped with, wherein a check valve 22 controls the liquid in the first cavity 12 to enter all the second cavitys 13, Ling Yidan
The liquid in the second cavity 13 is controlled to enter in the first cavity 12 to valve 22.I other words when the first ascending pipe 14 and runner 23
When connection, coolant is entered in the first cavity 12 through the first ascending pipe 14, and the second cavity 13 is in compressive state at this time,
The coolant squeeze pressure increase being trapped in the second cavity 13, so that check valve is opened, by the coolant in the second cavity 13
It is drained into the first cavity；Vice versa, and when the second ascending pipe 15 is connected with runner 23, coolant is through the second ascending pipe
15 enter in the second cavity 13, and the first cavity 12 is in compressive state at this time, and the coolant being trapped in the first cavity 12 is squeezed
Pressure pressure increases, so as to open check valve, by the coolant in the first cavity 12 be drained into the and in 2 cavitys, so as to fulfill the
The flowing of coolant in one cavity and the second wall, ensures smoothly moving up and down for piston 11.
Sealing ring is provided between the guide rod 10 and intercommunicating pore of the utility model, is provided between the piston 10 and cavity
Sealing ring.
As a kind of preferable mode of the utility model, sealing device is provided between the fixed block 16 and mounting blocks 9
17。
As a kind of mode of selection of the utility model, the sealing device is elastic rubber gasket.
As another selection mode of the utility model, the sealing device includes the first contiguous block 25 and the second contiguous block
26, the first contiguous block 25 is connected with mounting blocks 9, and the second contiguous block 26 is connected with fixed block 16, the first contiguous block and the second connection
The elastic rubber layer that section is in " X " type is provided between block；The sealing device of the embodiment can not only realize sealing function,
Also have the characteristics that adjustable range is big.Wherein the first contiguous block and the second contiguous block are connected to by high-strength fastening bolt respectively
On mounting blocks and fixed block.
First contiguous block and the opposite side of the second contiguous block are separately provided for the groove of clamping elastic rubber layer, bullet
Property rubber layer be held in the groove of the first contiguous block and the second contiguous block and sealed.
Embodiment one
The center of the present embodiment has the PDC drill bit of supporting structure, includes the connecting rod and carcass of interconnection, the tire
Multiple wings are evenly distributed with body, for the epimere of wing covered with some cutting tooths, the hypomere of wing is connected with gauge teeth, described
The center of carcass upper surface is provided with guide pad, and installation cavity is offered along vertical direction on the carcass, in the installation cavity
Mounting blocks are provided with, the mounting blocks offer interconnected intercommunicating pore and cavity, and the guide rod for being connected to guide pad lower end is worn
Cross intercommunicating pore and be connected with the piston in cavity, piston by cavity be separated into superposed first cavity and positioned at lower part
Two cavitys, the first cavity and the second cavity connect through the first ascending pipe and the second ascending pipe with the runner for being passed through coolant respectively
It is logical.
Embodiment two
The center of the present embodiment has the PDC drill bit of supporting structure, includes the connecting rod and carcass of interconnection, the tire
Multiple wings are evenly distributed with body, for the epimere of wing covered with some cutting tooths, the hypomere of wing is connected with gauge teeth, described
The center of carcass upper surface is provided with guide pad, and installation cavity is offered along vertical direction on the carcass, in the installation cavity
Mounting blocks are provided with, the mounting blocks offer interconnected intercommunicating pore and cavity, and the guide rod for being connected to guide pad lower end is worn
Cross intercommunicating pore and be connected with the piston in cavity, piston by cavity be separated into superposed first cavity and positioned at lower part
Two cavitys, the first cavity and the second cavity connect through the first ascending pipe and the second ascending pipe with the runner for being passed through coolant respectively
It is logical；The mounting blocks are installed in installation cavity through fixed block, and the cavity that fixed block will be formed between mounting blocks and installation cavity
Independent the first injection pressure chamber and the second injection pressure chamber are separated into, the first injection pressure chamber and the second injection pressure chamber are symmetrically distributed in mounting blocks
The left and right sides, the first injection pressure chamber and the second injection pressure chamber are respectively through the 3rd ascending pipe and the 4th ascending pipe and flow passage.
Embodiment three
The center of the present embodiment has the PDC drill bit of supporting structure, includes the connecting rod and carcass of interconnection, the tire
Multiple wings are evenly distributed with body, for the epimere of wing covered with some cutting tooths, the hypomere of wing is connected with gauge teeth, described
The center of carcass upper surface is provided with guide pad, and installation cavity is offered along vertical direction on the carcass, in the installation cavity
Mounting blocks are provided with, the mounting blocks offer interconnected intercommunicating pore and cavity, and the guide rod for being connected to guide pad lower end is worn
Cross intercommunicating pore and be connected with the piston in cavity, piston by cavity be separated into superposed first cavity and positioned at lower part
Two cavitys, the first cavity and the second cavity connect through the first ascending pipe and the second ascending pipe with the runner for being passed through coolant respectively
It is logical；The mounting blocks are installed in installation cavity through fixed block, and the cavity that fixed block will be formed between mounting blocks and installation cavity
Independent the first injection pressure chamber and the second injection pressure chamber are separated into, the first injection pressure chamber and the second injection pressure chamber are symmetrically distributed in mounting blocks
The left and right sides, the first injection pressure chamber and the second injection pressure chamber are respectively through the 3rd ascending pipe and the 4th ascending pipe and flow passage；Described
First, it is mounted on check valve on second, third and the 4th ascending pipe.
Example IV
On the basis of any of the above-described embodiment, two through holes are offered on the piston, are matched somebody with somebody in each through hole
Equipped with check valve, wherein a check valve controls the liquid in the first cavity to enter all the second cavitys, another check valve control second
Liquid in cavity is entered in the first cavity.
Embodiment five
On the basis of any of the above-described embodiment, sealing ring, the piston are provided between the guide rod and intercommunicating pore
Sealing ring is provided between cavity.
Embodiment six
On the basis of any of the above-described embodiment, sealing device is provided between the fixed block and mounting blocks.
Embodiment seven
On the basis of embodiment six, the sealing device is elastic rubber gasket.
Embodiment eight
On the basis of embodiment six, the sealing device includes the first contiguous block and the second contiguous block, the first connection
Block is connected with mounting blocks, and the second contiguous block is connected with fixed block, and being provided with section between the first contiguous block and the second contiguous block is in
The elastic rubber layer of " X " type.
Claims (8)
1. a kind of center has the PDC drill bit of supporting structure, include the connecting rod and carcass of interconnection, on the carcass uniformly
Multiple wings are distributed with, the epimere of wing is connected with gauge teeth, the carcass upper end covered with some cutting tooths, the hypomere of wing
The center in face is provided with guide pad, it is characterised in that offers installation cavity, the installation cavity along vertical direction on the carcass
Mounting blocks are inside provided with, the mounting blocks offer interconnected intercommunicating pore and cavity, are connected to the guide rod of guide pad lower end
It is connected through intercommunicating pore and with the piston in cavity, cavity is separated into superposed first cavity and positioned at lower part by piston
Second cavity, the first cavity and the second cavity are respectively through the first ascending pipe and the second ascending pipe and the runner for being passed through coolant
Connection.
2. center according to claim 1 has the PDC drill bit of supporting structure, it is characterised in that the mounting blocks are through solid
Block is determined in installation cavity, and the cavity formed between mounting blocks and installation cavity is separated into the first independent note by fixed block
Chamber and the second injection pressure chamber are pressed, the first injection pressure chamber and the second injection pressure chamber are symmetrically distributed in the left and right sides of mounting blocks, the first injection pressure
Chamber and the second injection pressure chamber are respectively through the 3rd ascending pipe and the 4th ascending pipe and flow passage.
3. center according to claim 2 has the PDC drill bit of supporting structure, it is characterised in that described first, second,
Check valve is mounted on third and fourth ascending pipe.
4. center according to claim 1 has the PDC drill bit of supporting structure, it is characterised in that is opened up on the piston
There are two through holes, check valve is equipped in each through hole, wherein a check valve controls the liquid in the first cavity to enter all
Second cavity, another check valve control the liquid in the second cavity to enter in the first cavity.
5. center according to claim 1 has the PDC drill bit of supporting structure, it is characterised in that the guide rod is with connecting
Sealing ring is provided between hole, sealing ring is provided between the piston and cavity.
6. center according to Claims 2 or 3 has the PDC drill bit of supporting structure, it is characterised in that the fixed block with
Sealing device is provided between mounting blocks.
7. center according to claim 6 has the PDC drill bit of supporting structure, it is characterised in that the sealing device is
Elastic rubber gasket.
8. center according to claim 6 has the PDC drill bit of supporting structure, it is characterised in that the sealing device bag
The first contiguous block and the second contiguous block are included, the first contiguous block is connected with mounting blocks, and the second contiguous block is connected with fixed block, and first connects
Connect the elastic rubber layer for being provided with that section is in " X " type between block and the second contiguous block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721246531.4U CN207332771U (en) | 2017-09-23 | 2017-09-23 | A kind of center has the PDC drill bit of supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721246531.4U CN207332771U (en) | 2017-09-23 | 2017-09-23 | A kind of center has the PDC drill bit of supporting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207332771U true CN207332771U (en) | 2018-05-08 |
Family
ID=62370066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721246531.4U Expired - Fee Related CN207332771U (en) | 2017-09-23 | 2017-09-23 | A kind of center has the PDC drill bit of supporting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207332771U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115839213A (en) * | 2023-02-17 | 2023-03-24 | 胜利油田万和石油工程技术有限责任公司 | PDC drill bit with adjustable |
| CN116556847A (en) * | 2023-07-05 | 2023-08-08 | 北京城建集团有限责任公司 | Drilling device and drilling system |
-
2017
- 2017-09-23 CN CN201721246531.4U patent/CN207332771U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115839213A (en) * | 2023-02-17 | 2023-03-24 | 胜利油田万和石油工程技术有限责任公司 | PDC drill bit with adjustable |
| CN115839213B (en) * | 2023-02-17 | 2023-05-05 | 胜利油田万和石油工程技术有限责任公司 | PDC drill bit with adjustable |
| CN116556847A (en) * | 2023-07-05 | 2023-08-08 | 北京城建集团有限责任公司 | Drilling device and drilling system |
| CN116556847B (en) * | 2023-07-05 | 2023-10-10 | 北京城建集团有限责任公司 | Drilling device and drilling system |
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| 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 |
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| CF01 | Termination of patent right due to non-payment of annual fee |