CN205823162U - A kind of pipe-following drilling eccentric drilling device - Google Patents
A kind of pipe-following drilling eccentric drilling device Download PDFInfo
- Publication number
- CN205823162U CN205823162U CN201620736646.0U CN201620736646U CN205823162U CN 205823162 U CN205823162 U CN 205823162U CN 201620736646 U CN201620736646 U CN 201620736646U CN 205823162 U CN205823162 U CN 205823162U
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- China
- Prior art keywords
- bit body
- balance bit
- drilling
- central shaft
- circular arc
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Abstract
The utility model discloses a kind of pipe-following drilling eccentric drilling device, including drilling rod and the central shaft being arranged on described drilling rod lower end, the lower end of described central shaft is provided with off-balance bit body, the lower surface of described off-balance bit body is provided with cutting tooth, the upper surface of described off-balance bit body is provided with circular arc draw-in groove, one end of described central shaft is provided with moving in circular arc draw-in groove so that described off-balance bit body in eccentric position or makes described off-balance bit body and central axis in the circular arc union joint of coaxial position relative to central axis, the shape of described circular arc union joint and circular arc draw-in groove is suitable, described drilling rod is provided with for the convenient casing shoe connecting sleeve pipe near the position of described off-balance bit body, the external diameter of described off-balance bit body is identical with the internal diameter of described casing shoe.This eccentric drilling device simple in construction, can pull out off-balance bit body in boring, it is to avoid bit body is retained in the waste caused at the bottom of drilling hole while extracting drilling rod.
Description
Technical field
This utility model belongs to pipe-following drilling technical field, is specifically related to a kind of pipe-following drilling eccentric drilling device.
Background technology
Common pipe-following drilling mode is i.e. to creep into while entering sleeve pipe under being pressed into or rotating；Or sleeve pipe is pressed in advance or revolves
Entering under Zhuaning, then drilling tool and then creeps into, and creeps into and proposes drilling rod and drill bit after putting in place, rises and protect in sleeve pipe and coring bit are stayed hole
Wall and extinction effect, although common pipe-following drilling can solve pore-forming problem, but often creep into a hole and must be stayed by pipe bit
Bigger waste is being caused at the bottom of hole.
How to design one directly can to make sleeve pipe follow-up and can facilitate drill bit taking-up in boring procedure
Pipe-following drilling drill bit, is correlative technology field technical staff technical problem urgently to be resolved hurrily.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency of the prior art, it is provided that a kind of pipe-following drilling eccentric bit
Tool.This eccentric drilling device simple in construction, can pull out off-balance bit body in boring while extracting drilling rod, it is to avoid will
Bit body is retained in the waste caused at the bottom of drilling hole.
For achieving the above object, the technical solution adopted in the utility model is: a kind of pipe-following drilling eccentric drilling device, and it is special
Levy and be: including drilling rod and be arranged on the central shaft of described drilling rod lower end, the lower end of described central shaft is provided with off-balance bit body,
The lower surface of described off-balance bit body is provided with cutting tooth, and the upper surface of described off-balance bit body is provided with circular arc draw-in groove, institute
The one end stating central shaft be provided with moving in circular arc draw-in groove so that described off-balance bit body relative to central axis in
Eccentric position or make described off-balance bit body and central axis connect in the circular arc union joint of coaxial position, described circular arc
The shape of head and circular arc draw-in groove is suitable, and described drilling rod is provided with near the position of described off-balance bit body and connects for convenient
The casing shoe of sleeve pipe, the external diameter of described off-balance bit body is identical with the internal diameter of described casing shoe.
Above-mentioned a kind of pipe-following drilling eccentric drilling device, it is characterised in that: it is provided with vertical water on described off-balance bit body
Hole and for the water in described vertical water hole being guided to the level trough of the external side of off-balance bit, the quantity in described vertical water hole and
The quantity of level trough is multiple, and described drilling rod is hollow structure, is provided with for being drawn by the water in drilling rod in described central shaft
Being directed at the through hole in vertical water hole, described through hole extends along the length direction of central shaft.
Above-mentioned a kind of pipe-following drilling eccentric drilling device, it is characterised in that: the outer wall of described off-balance bit body is provided with perpendicular
The straight sludge groove laid, the quantity of described sludge groove is multiple, and described sludge groove and described level trough corresponding thereto communicate.
Above-mentioned a kind of pipe-following drilling eccentric drilling device, it is characterised in that: described central shaft includes mandrel and is arranged on institute
State the sleeve outside mandrel, between described mandrel and sleeve, be provided with multiple dividing plate, between adjacent two described dividing plates, constitute institute
Stating through hole, one end of described mandrel and one end of sleeve and be both connected to the lower end of described drilling rod, described circular arc union joint is installed
The other end at described mandrel.
Above-mentioned a kind of pipe-following drilling eccentric drilling device, it is characterised in that: be provided with on described drilling rod for described set
The close-connected centralizer in shoe top.
This utility model compared with prior art has the advantage that
1, simple in construction of the present utility model, novel in design reasonable.
2, this utility model is by arranging central shaft, it is possible to effectively realize drilling rod and the connection of off-balance bit body, by
Circular arc union joint is set on central shaft, utilizes circular arc union joint and the cooperation of circular arc draw-in groove, it is possible to off-balance bit body
Position effectively adjust so that off-balance bit body is in eccentric state when bore operation, after boring terminates, will
Off-balance bit body adjust to central axis line, facilitate by off-balance bit body from boring take out.
3, this utility model is by arranging multiple vertical water hole and multiple level trough, it is possible to successively through boring, central shaft
Through hole in flow out water guide, with reach the cooling effect to off-balance bit body and get rid of rock dust effect, make bias
Bit body can sufficiently cool and effectively getting rid of rock dust.
4, the low cost that realizes of the present utility model, using effect is good, it is simple to promote the use of.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of this utility model central shaft.
Fig. 3 is this utility model circular arc draw-in groove laying structure schematic diagram on off-balance bit body.
Description of reference numerals:
1 drilling rod；2 sleeve pipes；3 centralizers；
4 casing shoes；5 central shafts；5-1 circular arc union joint；
5-2 through hole；5-3 mandrel；5-4 sleeve；
5-5 dividing plate；6 off-balance bit bodies；7 cutting teeth；
8 circular arc draw-in grooves；9 vertical water holes；10 level troughs；
11 sludge grooves.
Detailed description of the invention
A kind of pipe-following drilling eccentric drilling device as depicted in figs. 1 and 2, including drilling rod 1 be arranged on described drilling rod 1 lower end
Central shaft 5, the lower end of described central shaft 5 is provided with off-balance bit body 6, and the lower surface of described off-balance bit body 6 is provided with cuts
Cutting tooth 7, the upper surface of described off-balance bit body 6 is provided with circular arc draw-in groove 8, and one end of described central shaft 5 is provided with
Move in circular arc draw-in groove 8 so that described off-balance bit body 6 is in eccentric position relative to central shaft 5 or makes described off-balance bit
Body 6 and central shaft 5 are in the circular arc union joint 5-1 of coaxial position, described circular arc union joint 5-1 and circular arc draw-in groove 8
Shape suitable, described drilling rod 1 is provided with near the position of described off-balance bit body 6 for the convenient sleeve pipe connecting sleeve pipe 2
Boots 4, the external diameter of described off-balance bit body 6 is identical with the internal diameter of described casing shoe 4.
In the present embodiment, off-balance bit body 6 in use, is arranged on central shaft 5 by this eccentric drilling device, say, that will
Circular arc union joint 5-1 on central shaft 5 inserts in the circular arc draw-in groove 8 on off-balance bit body 6, now utilizes circular arc to connect
Circular arc union joint 5-1 position in circular arc draw-in groove 8 is adjusted by head 5-1 being slidably matched in circular arc draw-in groove 8,
Guarantee that off-balance bit body 6 is in eccentric position relative to central shaft 5, rotarily drive central shaft 5 and off-balance bit by drilling rod 1
Body 6 rotates, and then makes off-balance bit body 6 spud in out more than the boring of its external diameter, boring has reached the purpose of reaming, with convenient
In boring, load sleeve pipe 2, can reach borehole wall is effectively protected by arranging sleeve pipe 2, after boring terminates,
Can reversely adjust circular arc union joint 5-1 position in circular arc draw-in groove 8, it is ensured that off-balance bit body 6 is in central shaft 5
Coaxial position, now, owing to the external diameter of off-balance bit body 6 is identical with the internal diameter of casing shoe 4, thus it is possible to extracting drilling rod 1
While, off-balance bit body 6 is pulled out in boring, it is to avoid off-balance bit body 6 is retained in the wave caused at the bottom of drilling hole
Take.
As it is shown on figure 3, be provided with vertical water hole 9 on described off-balance bit body 6 and for by the water in described vertical water hole 9
Guiding the level trough 10 to off-balance bit body 6, the described quantity in vertical water hole 9 and the quantity of level trough 10 are multiple,
Described drilling rod 1 is hollow structure, is provided with for the water in drilling rod 1 is guided the through hole to vertical water hole 9 in described central shaft 5
5-2, described through hole 5-2 extend along the length direction of central shaft 5.
In the present embodiment, by arranging multiple vertical water hole 9 and multiple level trough 10, it is possible to successively through boring, center
The water flowed out in the through hole 5-2 of axle 5 guides, to reach the cooling effect to off-balance bit body 6 and to get rid of the effect of rock dust,
Make the off-balance bit body 6 can sufficiently cool and effective eliminating to rock dust.
As in figure 2 it is shown, the outer wall of described off-balance bit body 6 is provided with the sludge groove 11 of vertically laying, described sludge groove 11
Quantity be multiple, described sludge groove 11 and described level trough 10 corresponding thereto communicate.
In the present embodiment, by arranging multiple sludge groove 11, it is possible to utilize the water after off-balance bit body 6 is cooled down by rock dust
Wash away along sludge groove 11, the row's of effectively raising powder efficiency.
As in figure 2 it is shown, described central shaft 5 includes mandrel 5-3 and is arranged on the sleeve 5-4 outside described mandrel 5-3, described
It is provided with multiple dividing plate 5-5 between mandrel 5-3 and sleeve 5-4, between adjacent two described dividing plate 5-5, constitutes described through hole 5-2,
One end of described mandrel 5-3 and one end of sleeve 5-4 are both connected to the lower end of described drilling rod 1, and described circular arc union joint 5-1 pacifies
It is contained in the other end of described mandrel 5-3.
In the present embodiment, the simple in construction of described central shaft 5, it is possible to effectively realize drilling rod 1 and the company of off-balance bit body 6
Connect, by arranging circular arc union joint 5-1 on central shaft 5, utilize circular arc union joint 5-1 and the cooperation of circular arc draw-in groove 8,
The position of off-balance bit body 6 effectively can be adjusted, so that off-balance bit body 6 is in eccentric shape when bore operation
State, after boring terminates, off-balance bit body 6 is adjusted to central shaft 5 coaxial line, facilitate off-balance bit body 6 from boring
In take out.
As it is shown in figure 1, be provided with on described drilling rod 1 for the close-connected centralizer in described casing shoe 4 top 3.Logical
Cross and centralizer 3 is set, it is possible to the position of drilling rod 1 is effectively positioned, it is to avoid double swerve when drilling rod 1 rotates.
The above, be only preferred embodiment of the present utility model, not impose any restrictions this utility model, every
Any simple modification, change and equivalent structure transformation above example made according to this utility model technical spirit, the most still
Belong in the protection domain of technical solutions of the utility model.
Claims (5)
1. a pipe-following drilling eccentric drilling device, it is characterised in that: include drilling rod (1) and be arranged on described drilling rod (1) lower end
Central shaft (5), the lower end of described central shaft (5) is provided with off-balance bit body (6), and the lower surface of described off-balance bit body (6) sets
Being equipped with cutting tooth (7), the upper surface of described off-balance bit body (6) is provided with circular arc draw-in groove (8), the one of described central shaft (5)
End is provided with moving in circular arc draw-in groove (8) so that described off-balance bit body (6) is in bias relative to central shaft (5)
Position or make described off-balance bit body (6) and central shaft (5) be in the circular arc union joint (5-1) of coaxial position, described circle
The shape of arc union joint (5-1) and circular arc draw-in groove (8) is suitable, and described drilling rod (1) is near described off-balance bit body (6)
Position is provided with for the convenient casing shoe (4) connecting sleeve pipe (2), the external diameter of described off-balance bit body (6) and described casing shoe
(4) internal diameter is identical.
A kind of pipe-following drilling eccentric drilling device the most according to claim 1, it is characterised in that: described off-balance bit body (6)
On be provided with vertical water hole (9) and for water in described vertical water hole (9) is guided the level to off-balance bit body (6)
Groove (10), the quantity of described vertical water hole (9) and the quantity of level trough (10) are multiple, and described drilling rod (1) is hollow structure,
It is provided with in described central shaft (5) for the water in drilling rod (1) is guided the through hole (5-2) to vertical water hole (9), described through hole
(5-2) length direction along central shaft (5) extends.
A kind of pipe-following drilling eccentric drilling device the most according to claim 2, it is characterised in that: described off-balance bit body (6)
Outer wall be provided with the sludge groove (11) of vertically laying, the quantity of described sludge groove (11) is multiple, described sludge groove (11) and
Described level trough (10) corresponding thereto communicates.
A kind of pipe-following drilling eccentric drilling device the most according to claim 2, it is characterised in that: described central shaft (5) includes
Mandrel (5-3) and be arranged on described mandrel (5-3) outside sleeve (5-4), set between described mandrel (5-3) and sleeve (5-4)
It is equipped with multiple dividing plate (5-5), between adjacent two described dividing plates (5-5), constitutes described through hole (5-2), described mandrel (5-3)
One end of one end and sleeve (5-4) is both connected to the lower end of described drilling rod (1), and described circular arc union joint (5-1) is arranged on institute
State the other end of mandrel (5-3).
A kind of pipe-following drilling eccentric drilling device the most according to claim 1, it is characterised in that: described drilling rod (1) is upper to be arranged
Have for the close-connected centralizer in described casing shoe (4) top (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620736646.0U CN205823162U (en) | 2016-07-13 | 2016-07-13 | A kind of pipe-following drilling eccentric drilling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620736646.0U CN205823162U (en) | 2016-07-13 | 2016-07-13 | A kind of pipe-following drilling eccentric drilling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205823162U true CN205823162U (en) | 2016-12-21 |
Family
ID=57563039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620736646.0U Expired - Fee Related CN205823162U (en) | 2016-07-13 | 2016-07-13 | A kind of pipe-following drilling eccentric drilling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205823162U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761458A (en) * | 2017-02-17 | 2017-05-31 | 中国电建集团贵阳勘测设计研究院有限公司 | Diameter-telescopic screw head for pipe following |
| CN107288551A (en) * | 2017-08-15 | 2017-10-24 | 吉林大学 | A kind of polar region deep ice layer drilling uses ice auger drill bit |
| CN108049808A (en) * | 2017-12-07 | 2018-05-18 | 浙江省化工工程地质勘察院 | A kind of drilling drilling tool and boring method |
| CN113628525A (en) * | 2021-09-17 | 2021-11-09 | 西南石油大学 | Device and method for simulating rock carrying of reverse circulation eccentric flow field of gas drilling |
-
2016
- 2016-07-13 CN CN201620736646.0U patent/CN205823162U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761458A (en) * | 2017-02-17 | 2017-05-31 | 中国电建集团贵阳勘测设计研究院有限公司 | Diameter-telescopic screw head for pipe following |
| CN107288551A (en) * | 2017-08-15 | 2017-10-24 | 吉林大学 | A kind of polar region deep ice layer drilling uses ice auger drill bit |
| CN108049808A (en) * | 2017-12-07 | 2018-05-18 | 浙江省化工工程地质勘察院 | A kind of drilling drilling tool and boring method |
| CN108049808B (en) * | 2017-12-07 | 2019-06-28 | 浙江省化工工程地质勘察院 | A kind of drilling drilling tool and boring method |
| CN113628525A (en) * | 2021-09-17 | 2021-11-09 | 西南石油大学 | Device and method for simulating rock carrying of reverse circulation eccentric flow field of gas drilling |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161221 Termination date: 20170713 |