CN106507861B - Two-tube single action core drill - Google Patents
Two-tube single action core drillInfo
- Publication number
- CN106507861B CN106507861B CN200710081939.5A CN200710081939A CN106507861B CN 106507861 B CN106507861 B CN 106507861B CN 200710081939 A CN200710081939 A CN 200710081939A CN 106507861 B CN106507861 B CN 106507861B
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- Prior art keywords
- drill bit
- heart axle
- tube
- cross heart
- pipe joint
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention belongs to a kind of drilling tool, specifically discloses a kind of two-tube single action core drill, radially from inner ring to outer ring in staged, the remainder of the labial surface of drill bit is tapered for the labial surface of its drill bit；Hydrophthalmia is intersected in drill bit inner chamber with the axis of drill bit；Cross heart axle is provided with ball-throwing type check valve with the connection end of return connector.The bit bottom lip surface of the present invention adopts step type conical structure, and this structure is to compared with the oriented hole wall squeezing action of big gravel, it is to avoid compared with turn a millstone loss of the big gravel to rock core, and drilling tool rotary stability and guidance quality are good, is conducive to protection rock core, prevents hole deviation；Ball-throwing type check valve pitching overflush fluid stream flow to bottom hole from drilling rod after clearance flow between inner and outer pipe to lateral spray type bit port, it is to avoid direct erosion effect of the liquid stream to rock core in pipe；The average taking rate of rock core is made to bring up to 91% by 40.30%, high-quality porosity brings up to more than 90% by 17.40%, meets the requirement of geological prospecting.
Description
Technical field
The invention belongs to drilling tool, and in particular to a kind of two-tube single action drilling tool.
Background technology
Middle kern stone, pebbly sandstone and the gravel of Yili Basin crisp pastry sandstone lower Jurassic system in being primarily referred to as
Rock, interlayer oxidized zone in close relations is just developed wherein with uranium mineralization, is the main purpose layer of geological prospecting.
Sand body short texture, in " soybean residue " shape, shale is weak cementing or without cementing, and main component is stone
English, feldspar and landwaste, gravel footpath reach 60-70% in 10-250mm gravel concentration.Cored on this stratum
During drilling, rock core when being acted on (mechanism or liquid effects) by external force its natural structure easily by
Destruction, and easily liquid erosion " molten " is rinsed in flushing liquor, rock core is afraid of erosion, is afraid of abrasion, is afraid of vibration.
Using conventional ball-throwing type single tube drilling tool and double movable double-tube boring tool and common alloy in drilling process
Drill bit, due to its water-resisting property and damping poor, hole deviation when easily causing drilling, drilling tool can not in revolution
The erosion effect and drill bit to the mechanical damage and flushing liquor of rock core to rock core are avoided in the case where gravel is rebasing
Loss of turning a millstone to rock core, so that the core recovery percentage of this layer is less than 50%, it is difficult to which acquirement meets matter
Desired qualified rock core is measured, does not reach geological prospecting requirement.
The content of the invention
It is an object of the invention to provide a kind of two-tube single action core drill, the drilling tool can be reduced to rock core
Mechanical damage, flushing liquor lower turns a millstone gravel is rebasing to the erosion effect of rock core and drill bit to rock core
Loss, quality and taking rate are taken so as to improve rock core.
Realize the technical scheme of the object of the invention：A kind of two-tube single action core drill, one end of its outer tube and drill bit
Connection, the other end and reducing joint connect and compose and return connector, the cross heart are sequentially provided with cavity, cavity
Axle, bearing block, inner pipe joint and inner tube, one end of reducing joint and one end of return connector are connected, point
The other end of water swivel is connected with one end of cross heart axle, and the other end of cross heart axle is located in inner pipe joint,
And connected by means of one end of bearing block and inner pipe joint, the other end of inner pipe joint and one end of inner tube connect
Connect, the other end of inner tube is located in drill bit, circumferentially arranged with some circle cutting tooths on the labial surface of drill bit, and
Several hydrophthalmias are circumferentially with along it, the labial surface of drill bit is in radially staged from inner ring to outer ring, is bored
The remainder of the labial surface of head is tapered；Described cross heart axle and the connection end of return connector are provided with pitching
Formula check valve；It is hollow cavity inside return connector, and its side wall is provided with two axis and return connector
The intersecting through hole of axis；Cross mandrel interior is hollow cavity, the cross heart in inner pipe joint
It is provided with outside axle between two groups two one group of round boss, each group of round boss provided with a bearing,
Cross heart axle is sealed by means of sealing ring and bearing block and inner pipe joint；Socket regulation spiral shell outside cross heart axle
It is female.
The axis of described hydrophthalmia intersects with the axis of drill bit in the inner chamber of drill bit.
Described bearing is 8207 thrust ball bearings.
The effect of the present invention：1. drilling tool is designed to inside and outside single-action twin-pipes；Drilling rod connection reducing joint and band
Dynamic outer tube and drill bit revolution, now, inner tube passes through cross heart axle, bearing block, bearing and inner pipe joint
Fixation is in not rotary state, i.e., while in drilling process outer tube can rotate, inner tube holding
It is motionless, acted on so as to avoid mechanical wear of the drilling tool to rock core in pipe in turning course；The bottom of drill bit
Labial surface uses step type conical structure, the drilling tool of this structure to compared with the oriented hole wall squeezing action of big gravel,
The loss of turning a millstone to rock core compared with big gravel is avoided, while drilling tool rotary stability and guidance quality are good, is conducive to
Rock core is protected, hole deviation when preventing from drilling.2. the axis of the axis of hydrophthalmia and drill bit 12 is in drill bit (12)
Inner chamber is intersected, and this avoids " erosion " of the liquid stream flowed out from drill bit to rock core and is lost to a certain extent.
3. ball-throwing type check valve pitching overflush fluid stream flows to lateral spray type bit port from drilling rod through inner and outer pipe gap
After flow to bottom hole, it is to avoid direct erosion of the liquid stream to rock core in pipe is acted on；Rock ore deposit is made using above-mentioned measure
The average taking rate of the heart brings up to 91% by 40.30%, and high-quality porosity brings up to more than 90%, guarantor by 17.40%
Construction quality has been demonstrate,proved, the requirement of geological prospecting is met.4. list is formed using two group of 8207 thrust ball bearing
Motivation structure, bearing life is long, single action performance flexibility and reliability, is adapted to sand layers high solid mud drilling condition.
Brief description of the drawings
The structure chart for the two-tube single action core drill that Fig. 1 provides for the present invention；
The A direction views for the ladder lateral spray type alloy bit that Fig. 2 provides for the present invention；
The ladder lateral spray type alloy bit B-B direction sectional view that Fig. 3 provides for the present invention；
Fig. 4 is the ladder lateral spray type alloy bit C that provides of the present invention to expanded view.
In figure：1. reducing joint；2. return connector；3. outer tube；4. ball-throwing type check valve；5. cross heart axle；
6. adjusting nut；7. sealing ring；8. bearing block；9. bearing；10. inner pipe joint；11. inner tube；12. drill bit；
13. anti-friction ring；14. through hole；15. hydrophthalmia；16. cutting tooth.
Embodiment
The two-tube single action core drill that the present invention is provided is made furtherly with reference to embodiment and accompanying drawing
It is bright.
As shown in figure 1, a kind of two-tube single action core drill, one end and the screw thread of drill bit 12 of its outer tube 3 connect
Connect, the other end is threadedly coupled composition cavity with reducing joint 1, be sequentially provided with cavity return connector 2,
Cross heart axle 5, bearing block 8, inner pipe joint 10 and inner tube 11 etc.；Return connector 2, cross heart axle 5,
Gap is left between bearing block 8, inner pipe joint 10 and inner tube 11 and the inwall of cavity.Reducing joint 1
Anti-friction ring 13 is provided between the boss of outer tube 3.The inside of reducing joint 1 is hollow cavity, and reducing connects
First 1 one end is connected with the threaded one end of return connector 2.The inside of return connector 2 is hollow cavity,
And its side wall is provided with the through hole 14 that two axis intersect with the axis of return connector 2, and three's axis is dividing
Intersect the inner chamber of water swivel 2.The other end of return connector 2 is connected with the threaded one end of cross heart axle 5.
The inside of cross heart axle 5 is hollow cavity, and the other end of cross heart axle 5 is located in inner pipe joint 10, and
It is connected by means of bearing block 8 with one end of inner pipe joint 10, the cross heart axle in inner pipe joint 10
5 outsides are provided between two groups two one group of round boss, each group of round boss provided with a bearing 9,
Cross heart axle 5 is sealed by means of sealing ring 7 with bearing block 8 and inner pipe joint 10；Outside cross heart axle 5
It is socketed adjusting nut 6；The connection end of cross heart axle 5 and return connector 2 is provided with the throwing for blocking its inner chamber
Ball check valve 4.The other end of inner pipe joint 10 is connected with the threaded one end of inner tube 11, inner tube 11
Inside is hollow cavity, and the other end of inner tube 11 is located in the hollow cavity of drill bit 12.
Above-mentioned bearing 9 is 8207 thrust ball bearings.
Above-mentioned 11 points of inner tube is two kinds：One kind is common inner tube, and one kind is hemizygous pipe, can according to stratum and
Coring needs to select respectively.In general sandstone formation, from common inner tube；Containing the aqueous target zone of ore deposit,
Hemizygous pipe is selected, to keep the original state structure of rock core, it is to avoid human factor is damaged to rock core.
Before the above-mentioned pitching of ball-throwing type check valve 4, drilling tool is common single tube drilling tool, and big pump amount can be achieved and rinses
Bottom hole, realizes borehole cleaning operation, after the pitching of ball-throwing type check valve 4, and drilling tool is two-tube single action drilling tool.
In the present embodiment, the external diameter 89mm of outer tube 3 of drilling tool, inner tube 11 external diameter 73mm, it is inside and outside
Ligament is that 3.5mm is larger, and liquid stream circulation resistance is small, is not susceptible to rock dust, debris blockage；It is suitable for
The larger flushing liquor of viscosity；The larger flushing liquor of this viscosity must to safeguarding that hole wall is stable, protection rock core is
Must.
As shown in Fig. 2,3 and 4, drill bit 12 is ladder lateral spray type alloy bit, in the labial surface of drill bit 12
On circumferentially weld three circles and amount to 24 carbide cutting teeth 16, and drill bit 12 labial surface radially
It is in staged from inner ring to outer ring, the remainder of the labial surface of drill bit 12 is tapered.Inner ring six group two one
The circumferential uniform welding of carbide cutting tooth 16 of group is in the bottom labial surface of drill bit 12, the bottom labial surface of drill bit 12
Groove is provided between two adjacent groups cutting tooth 16.Circumferential uniform 6 hard alloy in mesosphere and outer ring
The cutting tooth 16 of cutting tooth 16, mesosphere and outer ring corresponds to two cutting tooths positioned at same group of inner ring
16 centre position, and circumferentially uniform 6 circles of conical section of the labial surface mesosphere of drill bit 12 and outer ring
Hydrophthalmia 15, and circular hydrophthalmia 15 is located at the centre of the same two neighboring cutting tooth 16 of circle.Circular hydrophthalmia 15
Axis intersect with the axis of drill bit 12 in the inner chamber of drill bit 12.
In the present embodiment, inner ring and outer ring carbide cutting tooth 16 are square column alloy, mesosphere hard
Alloy cutting tooth 16 is six side's alloys.Drill bit abrasive material is inlayed using tri- kinds of alloys of k573, k572 and k531 are mixed,
Lip carbide cutting tooth 16 two one group of concentrated types in bottom are arranged and use brazing reinforcement, and bit life is significantly carried
Height, it is not only economical but also practical.Ladder lateral spray type alloy bit 12 has band rib and without two kinds of rib, in pine
In scattered-kern stone stratum, the drill bit of additional rib is selected, sandstone undergauge stick of tool can be effectively prevented；
Crept into loose glutenite with the drill bit without rib, car effect of spraining can be reduced, quality of coring is improved
And drilling efficiency.
The course of work for the two-tube single action core drill that the present invention is provided：(1) before core-drilling：In drilling tool
Ball-throwing type check valve 4 is not temporarily put, and borehole cleaning operation is carried out first.Now, flushing liquor passes through ten from drilling rod
Word heart axle 5, inner tube 11 and drill bit 12 reach precipitation rock dust in bottom hole, direct cleaning hole.(2) core
During drilling：Ball-throwing type check valve 4 is put into drilling tool by drilling rod, now, 4, ball-throwing type check valve
Fall within cross heart axle 5, and cross heart axle 5 and inner chamber one end of the connection end of return connector 2 are blocked；
Flushing liquor passes through return connector 2 from drilling rod, and the bottom of drill bit 12 is reached from inner and outer pipe annular gap.Pass through
The single effect of ball-throwing type check valve 4, it is to avoid erosion of the flushing liquor stream to rock core in pipe is acted on.(3)
In drilling process, (drilling rod is that one end is connected with rig to drilling rod, be connected with this drilling tool hundreds of meters of the other end
Long steel pipe) connect reducing joint 1 and drive outer tube 3 and drill bit 12 to turn round, now, inner tube 11 is led to
Cross the single action mechanism of cross heart axle 5, bearing block 8, bearing 9 and the composition of inner pipe joint 10 and be in and do not turn
Dynamic state.While single action mechanism can rotate outer tube, inner tube is remained stationary as, and is existed so as to avoid drilling tool
The mechanical wear of rock core in pipe is acted in turning course.
The two-tube single action core drill of the present invention is adapted to high viscosity and hyperbaric thickened drilling fluid (this mud simultaneously
Slurry is required to ensureing long hole section Quaternary Strata bore hole safety drilling) drilling condition.
Claims (3)
1. a kind of two-tube single action core drill, one end of its outer tube (3) is connected, separately with drill bit (12)
One end connects and composes with reducing joint (1) and return connector (2), the cross heart is sequentially provided with cavity, cavity
Axle (5), bearing block (8), inner pipe joint (10) and inner tube (11), one end of reducing joint (1)
It is connected with one end of return connector (2), the other end of return connector (2) and the one of cross heart axle (5)
End connection, the other end of cross heart axle (5) is located in inner pipe joint (10), and by means of bearing block (8)
It is connected with one end of inner pipe joint (10), the other end of inner pipe joint (10) and the one of inner tube (11)
End connection, the other end of inner tube (11) is located in drill bit (12), along week on the labial surface of drill bit (12)
Cutting tooths (16) are enclosed to provided with some, and several hydrophthalmias (15) are circumferentially with along it, it is characterised in that：
The labial surface of drill bit (12) radially from inner ring to outer ring be in staged, the labial surface of drill bit (12) its
Remaining part point is tapered；The connection end of described cross heart axle (5) and return connector (2) is provided with ball-throwing type
Check valve (4)；Be hollow cavity inside return connector (2), and its side wall provided with two axis with
The intersecting through hole (14) of the axis of return connector (2)；It is hollow cavity inside cross heart axle (5),
Two groups two one group of round boss is provided with outside cross heart axle (5) in inner pipe joint (10),
Provided with a bearing (9) between each group of round boss, cross heart axle (5) is by means of sealing ring (7)
Sealed with bearing block (8) and inner pipe joint (10)；Socket adjusting nut (6) outside cross heart axle (5).
2. a kind of two-tube single action core drill according to claim 1, it is characterised in that：Described
The axis of hydrophthalmia (15) intersects with the axis of drill bit (12) in the inner chamber of drill bit (12).
3. a kind of two-tube single action core drill according to claim 1, it is characterised in that：Described
Bearing (9) is 8207 thrust ball bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710081939.5A CN106507861B (en) | 2007-08-15 | 2007-08-15 | Two-tube single action core drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710081939.5A CN106507861B (en) | 2007-08-15 | 2007-08-15 | Two-tube single action core drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106507861B true CN106507861B (en) | 2012-08-15 |
Family
ID=58353412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710081939.5A Active CN106507861B (en) | 2007-08-15 | 2007-08-15 | Two-tube single action core drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106507861B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120063A (en) * | 2017-04-29 | 2017-09-01 | 吉林大学 | Ice layer of polar region hot water coring creeps into method and device |
| CN107366518A (en) * | 2017-08-11 | 2017-11-21 | 无锡锡钻地质装备有限公司 | A kind of through-hole type single rotary double core barrel |
| CN108166943A (en) * | 2018-01-31 | 2018-06-15 | 长江岩土工程总公司（武汉） | Reach the drilling coring equipment of mud clothing package core using the probing of natural composite sludge |
| CN109538147A (en) * | 2018-12-24 | 2019-03-29 | 中铁二院工程集团有限责任公司 | Single-action twin-pipes impact core bit |
| CN110500056A (en) * | 2018-05-16 | 2019-11-26 | 长江岩土工程总公司（武汉） | Coring casing drilling tool |
| CN111456664A (en) * | 2020-04-16 | 2020-07-28 | 中国地质科学院勘探技术研究所 | Core drilling tool capable of preventing core from blocking |
| CN115822489A (en) * | 2023-02-15 | 2023-03-21 | 核工业北京地质研究院 | Drilling tool and drilling and coring method |
| CN116006108A (en) * | 2023-02-15 | 2023-04-25 | 核工业北京地质研究院 | Drilling tool and drilling coring method |
-
2007
- 2007-08-15 CN CN200710081939.5A patent/CN106507861B/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120063A (en) * | 2017-04-29 | 2017-09-01 | 吉林大学 | Ice layer of polar region hot water coring creeps into method and device |
| CN107120063B (en) * | 2017-04-29 | 2023-03-31 | 吉林大学 | Polar region ice layer hot water core drilling method and device |
| CN107366518A (en) * | 2017-08-11 | 2017-11-21 | 无锡锡钻地质装备有限公司 | A kind of through-hole type single rotary double core barrel |
| CN108166943A (en) * | 2018-01-31 | 2018-06-15 | 长江岩土工程总公司（武汉） | Reach the drilling coring equipment of mud clothing package core using the probing of natural composite sludge |
| CN108166943B (en) * | 2018-01-31 | 2023-11-03 | 长江岩土工程有限公司 | Drilling and coring equipment for drilling with natural composite mud to reach mud coating and wrapping rock core |
| CN110500056A (en) * | 2018-05-16 | 2019-11-26 | 长江岩土工程总公司（武汉） | Coring casing drilling tool |
| CN109538147A (en) * | 2018-12-24 | 2019-03-29 | 中铁二院工程集团有限责任公司 | Single-action twin-pipes impact core bit |
| CN111456664A (en) * | 2020-04-16 | 2020-07-28 | 中国地质科学院勘探技术研究所 | Core drilling tool capable of preventing core from blocking |
| CN115822489A (en) * | 2023-02-15 | 2023-03-21 | 核工业北京地质研究院 | Drilling tool and drilling and coring method |
| CN116006108A (en) * | 2023-02-15 | 2023-04-25 | 核工业北京地质研究院 | Drilling tool and drilling coring method |
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Legal Events
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| GR03 | Grant of secret patent right | ||
| DC01 | Secret patent status has been lifted | ||
| DCSP | Declassification of secret patent |