CN208456509U - A kind of novel PDC, gear wheel composite drill bit - Google Patents
A kind of novel PDC, gear wheel composite drill bit Download PDFInfo
- Publication number
- CN208456509U CN208456509U CN201821084178.9U CN201821084178U CN208456509U CN 208456509 U CN208456509 U CN 208456509U CN 201821084178 U CN201821084178 U CN 201821084178U CN 208456509 U CN208456509 U CN 208456509U
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- Prior art keywords
- bit
- gear wheel
- drill bit
- leg
- spherical
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Abstract
The utility model discloses a kind of novel PDC, gear wheel composite drill bit, including bit body, bit leg, cutting wing, spherical gear wheel, the spherical shape gear wheel is mounted on bit leg, PDC cutting tooth is equipped on the outside of the bit leg, cutting wing and is fixed on bit body, the spherical shape gear wheel is located at the surface of bit body, and center line is overlapped with drill bit body axis；The range of vertical range at the centre of sphere of the spherical shape gear wheel between cutting wing highest point is 18-29mm, and the side of the bit leg is sealed equipped with oil storage.The utility model relates to novel composite drill, PDC cutting tooth and cutter teeth share bit pressure jointly in drilling process, reduce each tooth pressure, improve drill bit antiwear property, and then extend the service life of entire drill bit, and since oil storage sealing station is closer to drill bit top, to improve the sensitivity of bit lubrication system induction bottom pressure, make the better lubricant environment of drill bit, to improve the service life of drill bit.
Description
Technical field
The utility model relates to oil-gas drilling engineering, mine engineering, architectural engineering foundation construction, geological drilling,
The hydrology and trenchless technology field, specially a kind of novel PDC, gear wheel composite drill bit.
Background technique
In oil and gas well drilling engineering, need by rock crushing tool fractured rock, and drill bit is common kata-rocks
The rock crushing tool of stone formation wellbore.Drill bit used in traditional drilling engineering mainly has rock bit and PDC drill bit.
Rock bit mainly by impact crushing in a manner of broken rock, bit creep into when gear wheel linear velocity it is fast, pass through tooth
Tooth on wheel generates impact granulitization broken rock to bottom rock.Its broken rock torque is small, and cutting tooth and shaft bottom contact area are small,
It is higher than pressing, it is easy to wedging stratum, is suitable for soft to hard a variety of stratum.
PDC drill bit by high rigidity, it is wear-resisting, carry out shearing-crushing rock from sharp composite polycrystal-diamond (abbreviation PDC tooth)
Stone, PDC drill bit have the features such as rate of penetration is high, the service life is long, discharge capacity is big, drilling cost is low, therefore its in soft-medium hard formation
It is widely used in the drilling of oil/gas well.
Existing PDC drill bit is gradually subtracted on rock acting surface by the regularity of distribution of drill margin to center line velocity
It is small.Cause the stock-removing efficiency at bit central low.And cutting at the closer drill margin of cutting tooth at bit central
Cut that the load that tooth is born is lower, so the cutting tooth at the closer bit central of cutting tooth of drill margin is easier to be ground
Damage.In drilling process due at bit central drilling efficiency is low and drill margin at cutting tooth be seriously worn so that boring
Well speed reduces, bit life declines, and drilling cost increases.
Composite drill bit is a kind of new drill that gear wheel and PDC wing are combined with each other, the PDC tooth in fixing wing
To scrape butt formula broken rock, the main broken rock in a manner of impacting crushing of tooth on gear wheel, therefore composite drill bit relies on two ways
Mix fractured rock.During rotary drilling, due to the frictional impact generated between drill bit and rock, generates drill bit and laterally move
It is dynamic, and the service life of composite sheet can be had an impact and reduced to the stability of drill bit by the impact vibration that transverse shifting generates.This is tight
The service life of drill bit is affected again.Although composite drill bit is just widely used, the cutting effect at bit central how is improved
Rate and the service life for improving drill bit are still a problem in composite drill bit design.
In conclusion existing PDC, gear wheel composite drill bit have, bit central stock-removing efficiency is low, rate of penetration is slow, drilling is stablized
The problem that property is low, bit life is short.
Utility model content
The utility model primarily directed to PDC, gear wheel composite drill bit there are central cutting low efficiency, rate of penetration is slow, bores
Problem low into stability, bit life is short provides a kind of novel PDC, gear wheel composite drill bit.
The utility model solves technical solution provided by above-mentioned technical problem: a kind of novel PDC, gear wheel composite drill
Head, including bit body, bit leg, cutting wing, spherical gear wheel, the bit leg are equipped with bearing, and the spherical tooth wheel outer surface is set
There is chip tooth, the spherical shape gear wheel is mounted on the bearing of bit leg, and the bit leg, the shape size for cutting wing are all the same, institute
Bit leg is stated, PDC cutting tooth is equipped with and is fixed on bit body on the outside of cutting wing, the spherical shape gear wheel is located at bit body
Surface, center line are overlapped with drill bit body axis；It is described spherical shape gear wheel the centre of sphere with cutting wing highest point between it is vertical away from
From range be ± 29mm, the side of the bit leg is equipped with oil storage sealing.
Further technical solution is that the spherical shape gear wheel is equipped with hydrophthalmia and several drainage troughs, several drainage troughs
One end be intersected at hydrophthalmia, the vertical range of the other end and spherical gear wheel lower end surface is 20~50mm.
Further technical solution is that the number of the cutting wing is three, and three cutting wings and bit leg are evenly arranged on
The bizet periphery of bit body.
Further technical solution is that the distance between the oil storage sealing and bit leg highest point range are 60~75mm.
Further technical solution is that the bit leg, the cutting wing back side are equipped with wear-resisting gauge teeth.
Further technical solution is that the angle between the hydrophthalmia center line and bearing axis is 5~10 °.
Further technical solution is that the bizet of the bit body has spherical cavity, and the spherical shape gear wheel is located at spherical
Spacing on the surface of cavity, the spherical cavity inner surface and spherical gear wheel between chip tooth tooth top is 10~20mm.
The further technical solution of root is that the end face of close spherical gear wheel is intrados on the cutting wing, described interior
Cambered surface is inclined outwardly, and the angle between the spherical cavity and the intrados being inclined outwardly is 0~30 °.
Further technical solution is that the bit body is equipped with the groove for welding bit leg.
The utility model has the advantage that
(1) improve drill bit service life: the utility model relates to novel composite drill, PDC is cut in drilling process
It cuts tooth and cutter teeth shares bit pressure jointly, reduce each tooth pressure, improve drill bit antiwear property, and then extend entire
The service life of drill bit, and since oil storage sealing station is closer to drill bit top, to improve bit lubrication system induction shaft bottom
The sensitivity of pressure makes the better lubricant environment of drill bit, to improve the service life of drill bit；
(2) improve bit operation stability: the utility model relates to novel Single-cone compound drill bit, by spherical gear wheel cloth
It sets in the surface of bit body, in drilling process, spherical rock bit will play the role of leading eye, and drill bit is prevented laterally to put
It is dynamic, the ability of the anti-lateral drift of drill bit is improved, to improve bit operation stability.
(3) stock-removing efficiency at bit central is improved.The utility model relates to novel composite drill, spherical rock bit
Periphery is uniform-distribution with several cutting wings and bit leg, and spherical rock bit is higher relative to cutting wing and bit leg, and normal
Rule drill bit is compared, and this patent increases spherical rock bit at bit central, makes it in drilling process, at bit central
Stock-removing efficiency is greatly improved, and so as to shorten drilling time, reduces the abrasion of drill bit, improves the longevity of drill bit
Life.
Detailed description of the invention
Fig. 1 is the schematic perspective view of the utility model；
Fig. 2 is the schematic view of the front view of the utility model；
Fig. 3 is the sectional view of embodiment middle (center) bearing and spherical gear wheel；
Fig. 4 is the structural schematic diagram of bit body in embodiment；
Fig. 5 is the structural schematic diagram of bit leg in embodiment.
As shown in the figure: 1- bit body, 2- bit leg, 3- cut wing, 4- spherical shape gear wheel, 5-PDC cutting tooth, 6- hydrophthalmia, 7-
Drainage trough, 8- oil storage sealing, the wear-resisting gauge teeth of 9-, the spherical cavity of 10-, 11- intrados, 12- bearing, 13- groove.
Specific embodiment
Further description is done to the utility model below with reference to embodiment and attached drawing.
As shown in Figs. 1-5, a kind of novel PDC, gear wheel composite drill bit of the utility model, including bit body 1, bit leg 2,
Wing 3, spherical gear wheel 4 are cut, the bit leg 2 is equipped with bearing 12, and spherical shape 4 outer surface of gear wheel is equipped with chip tooth, special
Sign is that the spherical shape gear wheel 4 is mounted on the bearing 12 of bit leg 2, and the bit leg 2, the shape size for cutting wing 3 are homogeneous
Together, the bit leg 2, cut wing 3 outside be equipped with PDC cutting tooth 5 and be fixed on bit body 1, it is described spherical shape 4, gear wheel
In the surface of bit body 1, center line is overlapped with 1 axis of bit body；The centre of sphere and cutting wing 3 of the spherical shape gear wheel 4
The range of vertical range between highest point is ± 29mm, and vertical range is the h in Fig. 2, is cut wherein the centre of sphere of spherical gear wheel 4 is higher than
The distance being positive when the sharpener wing 3, on the contrary lower than when be negative, the side of the bit leg 2 is equipped with oil storage sealing 8, and oil storage sealing 8 is located at
2 side of bit leg and closer to shaft bottom, so that the sensitivity of bit bearing lubricating system induction bottom pressure is improved, it is ensured that
Drill bit internal lubrication is good in drilling process, improves bit life.
In order to avoid the generation of mud drum phenomenon, preferred embodiment is, if the spherical shape gear wheel 4 be equipped with hydrophthalmia 6 and
Dry drainage trough 7, one end of several drainage troughs 7 are intersected at hydrophthalmia 6, the other end it is vertical with 4 lower end surface of spherical shape gear wheel away from
From for 20~50mm.When gear wheel 4 spherical in this way works, good translocation will be played to mud, to mitigate in drilling process,
Impact of the mud to gear wheel itself, enables shaft bottom landwaste easily to go out shaft bottom with the rotation of gear wheel, avoids mud drum phenomenon
Occur.
Wherein preferred embodiment is that the number of the cutting wing 3 is three, three cutting wings 3 and bit leg 2
It is evenly arranged on the bizet periphery of bit body 1.In this way can further such that 1 each section uniform force of bit body and drilling well radius it is steady
It is qualitative.
Specifically, the vertical distance range between the oil storage sealing 8 and 2 highest point of bit leg is 60~75mm, storage
Vertical range between 2 highest point of oil seal 8 and bit leg is the h in Fig. 21。
Wherein the bit leg 2, cutting 3 back side of wing are equipped with wear-resisting gauge teeth 9, for the rule diameter to guarantee gear wheel.
It is usually wherein to be coaxially disposed, in order to change the jetting angle of hydrophthalmia 6, preferably between hydrophthalmia 6 and bearing 12
Still, the angle between 6 center line of hydrophthalmia and 12 axis of bearing is 5~10 ° to embodiment.
In the present embodiment, in order to improve chip removal effect, preferred embodiment is that the bizet of the bit body 1 has ball
Shape cavity 10, the spherical shape gear wheel 4 are located at the surface of spherical cavity 10, spherical 10 surface of cavity on spherical shape gear wheel 4
Spacing between chip tooth tooth top is 10~20mm, and the end face of close spherical gear wheel 4 is intrados 11 on the cutting wing 3,
The intrados 11 is inclined outwardly, and the angle between the spherical cavity 10 and the intrados 11 being inclined outwardly is 0~30 °.
Bit leg 2 is by being welded on bit body 1, accordingly, it is preferred that embodiment is, the bit body 1 is equipped with and is used for
Inlay the groove 13 of welding bit leg 2.
The above does not impose any limitation on the present invention, although the utility model passed through it is above-mentioned
Embodiment discloses, however is not intended to limit the utility model, any person skilled in the art, practical not departing from
In new technique aspects, is made when the technology contents using the disclosure above and change or be modified to a bit the equivalent of equivalent variations
Embodiment, but all contents without departing from technical solutions of the utility model, according to the technical essence of the utility model to the above reality
Any simple modification, equivalent change and modification made by example are applied, are still within the scope of the technical solutions of the present invention.
Claims (8)
1. a kind of novel PDC, gear wheel composite drill bit, including bit body (1), bit leg (2), cutting wing (3), spherical gear wheel (4),
The bit leg (2) is equipped with bearing (12), and spherical shape gear wheel (4) outer surface is equipped with chip tooth, which is characterized in that the spherical shape
Gear wheel (4) is mounted on the bearing (12) of bit leg (2), and the bit leg (2), the shape size for cutting wing (3) are all the same, described
PDC cutting tooth (5) is equipped on the outside of bit leg (2), cutting wing (3) and is fixed on bit body (1), the spherical shape gear wheel
(4) it is located at the surface of bit body (1), center line is overlapped with bit body (1) axis；It is described spherical shape gear wheel (4) the centre of sphere with
The range for cutting the vertical range between wing (3) highest point is ± 29mm, and the side of the bit leg (2) is equipped with oil storage sealing (8).
2. a kind of novel PDC according to claim 1, gear wheel composite drill bit, which is characterized in that the spherical shape gear wheel (4)
Hydrophthalmia (6) and several drainage troughs (7), one end of several drainage troughs (7) is equipped with to be intersected at hydrophthalmia (6), the other end and
The vertical range of spherical gear wheel (4) lower end surface is 20~50mm.
3. a kind of novel PDC according to claim 2, gear wheel composite drill bit, which is characterized in that the cutting wing (3)
Number be three, the bizet that three cuttings wing (3) and bit leg (2) are evenly arranged on bit body (1) is peripheral.
4. a kind of novel PDC according to claim 2 or 3, gear wheel composite drill bit, which is characterized in that the oil storage sealing
It (8) is 60~75mm with the distance between bit leg (2) highest point range.
5. a kind of novel PDC according to claim 3, gear wheel composite drill bit, which is characterized in that the bit leg (2), cutting
Wing (3) back side is equipped with wear-resisting gauge teeth (9).
6. a kind of novel PDC according to claim 2, gear wheel composite drill bit, which is characterized in that hydrophthalmia (6) center
Angle between line and bearing (12) axis is 5~10 °.
7. a kind of novel PDC according to claim 1, gear wheel composite drill bit, which is characterized in that the bit body (1)
Bizet has spherical cavity (10), and the spherical shape gear wheel (4) is located at the surface of spherical cavity (10), the spherical cavity (10)
Spacing on surface and spherical gear wheel (4) between chip tooth tooth top is 10~20mm.
8. a kind of novel PDC according to claim 1 or claim 7, gear wheel composite drill bit, which is characterized in that the bit body (1)
It is equipped with the groove (13) for welding bit leg (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821084178.9U CN208456509U (en) | 2018-07-10 | 2018-07-10 | A kind of novel PDC, gear wheel composite drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821084178.9U CN208456509U (en) | 2018-07-10 | 2018-07-10 | A kind of novel PDC, gear wheel composite drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208456509U true CN208456509U (en) | 2019-02-01 |
Family
ID=65172470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821084178.9U Withdrawn - After Issue CN208456509U (en) | 2018-07-10 | 2018-07-10 | A kind of novel PDC, gear wheel composite drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208456509U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625788A (en) * | 2018-07-10 | 2018-10-09 | 西南石油大学 | A kind of novel pdc, gear wheel composite drill bit |
| CN110043193A (en) * | 2019-05-28 | 2019-07-23 | 西南石油大学 | Split type single cone PDC composite drill bit |
| CN110792397A (en) * | 2019-12-11 | 2020-02-14 | 西南石油大学 | Composite drill bit |
| CN111894464A (en) * | 2020-07-17 | 2020-11-06 | 中国石油大学(北京) | PDC and single cone compounded inner chip removal drill bit |
| CN115324485A (en) * | 2022-10-17 | 2022-11-11 | 成都迪普金刚石钻头有限责任公司 | Self-adaptive PDC composite drill bit |
-
2018
- 2018-07-10 CN CN201821084178.9U patent/CN208456509U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625788A (en) * | 2018-07-10 | 2018-10-09 | 西南石油大学 | A kind of novel pdc, gear wheel composite drill bit |
| CN110043193A (en) * | 2019-05-28 | 2019-07-23 | 西南石油大学 | Split type single cone PDC composite drill bit |
| CN110792397A (en) * | 2019-12-11 | 2020-02-14 | 西南石油大学 | Composite drill bit |
| CN111894464A (en) * | 2020-07-17 | 2020-11-06 | 中国石油大学(北京) | PDC and single cone compounded inner chip removal drill bit |
| CN111894464B (en) * | 2020-07-17 | 2022-05-24 | 中国石油大学(北京) | PDC and single-cone compounded inner chip removal drill bit |
| CN115324485A (en) * | 2022-10-17 | 2022-11-11 | 成都迪普金刚石钻头有限责任公司 | Self-adaptive PDC composite drill bit |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190201 Effective date of abandoning: 20230526 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190201 Effective date of abandoning: 20230526 |