CN203066857U - Drilling tool for clay layer drilling and coring - Google Patents
Drilling tool for clay layer drilling and coring Download PDFInfo
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- CN203066857U CN203066857U CN 201320031037 CN201320031037U CN203066857U CN 203066857 U CN203066857 U CN 203066857U CN 201320031037 CN201320031037 CN 201320031037 CN 201320031037 U CN201320031037 U CN 201320031037U CN 203066857 U CN203066857 U CN 203066857U
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Abstract
The utility model discloses a drilling tool for clay layer drilling and coring, and relates to a drilling tool for soil layers or rocks, in particular to a drilling tool which is used for clay layer drilling and coring and is characterized by a conduit of drilling fluid. The utility model aims at providing a drilling tool for clay layer drilling and coring, which can improve the core recovery rate and avoid orifice spouting. The drilling tool comprises a core barrel (1), a sliding sleeve (2), a sliding shaft (3), a drilling rod connector (4), a connector hollow channel (41), a sliding shaft upstream limiting block (31), a sliding shaft hollow channel (32), at least one upper through hole (33) and at least one lower through hole (34); the sliding shaft can drive the sliding sleeve to rotate around the axis of the core barrel; when the upper end surface of the sliding shaft upstream limiting block is in contact with the sliding sleeve, each through hole is positioned above the upper end surface of the sliding sleeve, and each lower through hole is covered by the inner wall of the sliding sleeve; and when the lower end surface of the drilling rod connector is in contact with the sliding sleeve, each lower through hole is positioned below the lower end surface of the sliding sleeve, and each upper through hole is covered by the inner wall of the sliding sleeve.
Description
Technical field
The utility model relates to the drilling tool of a kind of soil layer or rock, and particularly relating to a kind of conduit with drilling fluid that creeps into, gets core for argillic horizon is the drilling tool of feature.
Background technology
At present, in the drilling project field, creeping into sand and during dirt bed in the Quaternary Period, the conventional core bit that uses is common single tube drilling tool and common double pipe bit tool.Facts have proved, be easy to generate core (also the someone claims that core is rock core) when creeping into dirt bed with the two-tube drilling tool of single action or core plugging notifying mechanism of rope core drilling and stop up, stick with paste technical difficulties such as brill, increased and carried the brill number of times, influence drilling efficiency; Then two-tube relatively drilling tool efficient is higher to adopt the single tube drilling tool, also still less stops up or sticks with paste and bore.
Drilling tool can be carried flushing liquor by drill string and drilling tool in use at the bottom of the hole.The pressure effect of fluid column when carrying brill because in the drilling rod of common single tube drilling tool is washed out core easily, has greatly influenced core recovery, has reduced the probing quality.Also have in the joint of some single tube drilling tools on drilling tool at present steel ball is set, when carrying brill, by steel ball flushing liquor is blocked to prevent that core from coming off, but the liquid in the drill string can't in time be discharged like this, carrying when boring and can the phenomenon of whitewashing taking place in the aperture, makes airport environment more abominable.
The utility model content
The argillic horizon that the technical problems to be solved in the utility model provides a kind ofly can improve core recovery, avoid the aperture whitewashing takes place creeps into, core bit.
A kind of argillic horizon of the utility model creeps into, core bit, comprise core barrel, the upper end internal thread of wherein said core barrel is connected with sliding sleeve, slidely connect slide-bar in the sliding sleeve along the vertical direction, slide-bar can drive sliding sleeve and rotate around the axis of core barrel, the two ends up and down of slide-bar all pass described sliding sleeve, the lower end of slide-bar is positioned at described core barrel, be provided with the up limited block of slide-bar on the slide-bar in the lower end, be provided with the slide-bar hollow channel of upper end open in the slide-bar, the sidewall of slide-bar is provided with through hole and at least one lower through-hole at least one, through hole all is positioned at sustained height on each, each lower through-hole all is positioned at sustained height, and through hole and each lower through-hole all are communicated with the slide-bar hollow channel on each; The upper end of slide-bar is fixedly connected with tool joint, and the lower surface of tool joint is positioned at the slide-bar periphery, is provided with the joint hollow channel of upper end open in the tool joint, and the joint hollow channel is communicated with the slide-bar hollow channel; When the upper surface of the up limited block of described slide-bar contacted with sliding sleeve, through hole was positioned at the top of sliding sleeve upper surface on each, and each lower through-hole is covered by the inwall of sliding sleeve; When the lower surface of described tool joint contacted with sliding sleeve, each lower through-hole was positioned at the below of sliding sleeve lower surface, and through hole is covered by the inwall of sliding sleeve on each.
The utility model argillic horizon creeps into, core bit, and the lower end of wherein said tool joint is fixedly connected with guard shield, and guard shield stretches out downwards from the periphery of described sliding sleeve, and the height of guard shield lower surface is lower than the described height of going up through hole; When the lower surface of described tool joint contacted with sliding sleeve, the inwall of guard shield and the outer wall of described sliding sleeve fitted, and when the upper surface of the up limited block of described slide-bar contacted with sliding sleeve, guard shield broke away from the outer wall of described sliding sleeve.
The utility model argillic horizon creeps into, core bit, is provided with one way valve in the up limited block of wherein said slide-bar, and the cavity volume in the liquid feeding end of described one way valve and the described core barrel is communicated with, and the outlet end of described one way valve is communicated with the lower end of described slide-bar hollow channel.
The utility model argillic horizon creeps into, core bit, wherein said one way valve comprises the bearing that is arranged in the up limited block of slide-bar, steel ball and ball seat, leave clearance space between the lateral wall of described bearing and the up limited block of described slide-bar, described bearing is provided with communication channel in the upper end, described two ends of going up communication channel are communicated with lower end and the described clearance space of described slide-bar hollow channel respectively, be provided with the steel ball chamber of lower ending opening in the described bearing, have the following hole that connects that is communicated with steel ball chamber and described clearance space on the sidewall of steel ball chamber, described ball seat is arranged on the bearing below and ball seat is fixedlyed connected with the up limited block of described slide-bar, the upper surface of ball seat contacts with the lower surface of bearing, be provided with the ball seat hollow channel in the described ball seat along the vertical direction, the upper end of ball seat hollow channel is communicated with the steel ball chamber, cavity volume connection in the lower end of ball seat hollow channel and the described core barrel, the upper end of ball seat hollow channel has groove, and described steel ball is positioned at described groove.
The utility model argillic horizon creeps into, core bit, wherein said on each through hole and each lower through-hole all be to arrange along oblique below.
The utility model argillic horizon creeps into, core bit, and wherein said slide-bar cross section in the horizontal direction is regular hexagon.
The utility model argillic horizon creeps into, core bit, and the upper end of wherein said sliding sleeve is the top at last taper type.
The utility model argillic horizon creeps into, core bit, is embedded with sealing ring in the lateral wall of wherein said sliding sleeve, and when the lower surface of described tool joint contacted with sliding sleeve, the lower end of described guard shield was positioned at the below of described sealing ring.
The utility model argillic horizon creeps into, core bit, the lower end of the wherein said sliding sleeve up limited block of corresponding described slide-bar is provided with the limit chamber of lower ending opening, the upper end shape of the shape of described limit chamber and the up limited block of described slide-bar is coincide, and is embedded with second sealing ring in the sidewall of described limit chamber.
The utility model argillic horizon creeps into, the core bit difference from prior art is that the utility model argillic horizon creeps into, the joint of core bit core barrel relatively moves up and down, be connected with slide-bar by sliding sleeve between tool joint and the core barrel, be provided with through hole and lower through-hole in the slide-bar, when being in when creeping into state, flushing liquor flows to foot of hole in lower through-hole enters core barrel and along the sidewall of core barrel, when being in when carrying the brill state, lower through-hole is covered by sliding sleeve, flushing liquor can not enter in the core barrel but flow to the drilling tool outside through last through hole, proposing the pressure effect that the core in the core barrel when drilling through core can't be subjected to flushing liquor in the drill string like this, thereby can improve core recovery, and flushing liquor can't be blocked when boring owing to carry, but flow out via last through hole, so proposing the generation that also can avoid whitewashing phenomenon in aperture when boring.
When the utility model argillic horizon crept into, the lower end of tool joint is fixedly connected with guard shield in the core bit, guard shield can stop that the flushing liquor that flows out in the last through hole to directly the washing away of borehole wall, plays the effect of retaining wall; The utility model argillic horizon creeps into, be provided with one way valve in the up limited block of slide-bar in the core bit, cavity volume in the liquid feeding end of one way valve and the core barrel is communicated with, when outlet end is communicated with the lower end of slide-bar hollow channel, when drilling tool is in the brill state, one way valve is opened, water route in the drilling tool is dredged like this, thereby can improve running speed, and because water route mediation, hydraulic pressure fluctuation in the time of can reducing running against pressure and then the fluctuation of minimizing hydraulic pressure are further played the retaining wall effect to the destruction of borehole wall; The utility model argillic horizon creeps into, in the core bit, provided the one-way valve structures that is constituted jointly by the up limited block of slide-bar, bearing, steel ball and ball seat, this one-way valve structures is simple, bearing and ball seat be easily processing all, steel ball is also easily buied, make that the utility model argillic horizon creeps into, the core bit cost is low, be easy to make; The utility model argillic horizon creeps into, in the core bit on each through hole all when tiltedly the below arranges, the flushing liquor that flows out from last through hole can flow out downwards along the inwall of guard shield, can reduce flushing liquor washing away borehole wall like this, improve the retaining wall effect, when each lower through-hole all arranges along oblique below, the flushing liquor that flows out from lower through-hole can alleviate washing away the core post like this along the inwall of core barrel to dirty in lubricated core barrel inwall; When the utility model argillic horizon creeps into, slide-bar cross section in the horizontal direction is regular hexagon in the core bit, regular hexagon symmetrical configuration and be easy to processing; The upper end of sliding sleeve is the top when last taper type, when guard shield breaks away from the outer wall of sliding sleeve, the upper end of sliding sleeve is still to be stretched in the guard shield, the flushing liquor that flows out from last through hole can flow down along the outer wall of sliding sleeve after via the gap between guard shield and the sliding sleeve upper end like this, to alleviate washing away borehole wall; Can realize that between guard shield and sliding sleeve sealed sliding is dynamically connected when being embedded with sealing ring in the lateral wall of sliding sleeve, the sliding sleeve lower end is provided with limit chamber, can realize that between sliding sleeve and the up limited block of slide-bar sealed sliding is dynamically connected when being embedded with second sealing ring in the sidewall of limit chamber, comparing so just is slidingly connected can avoid flushing liquor to flow out from the gap between part, improves further that the utility model argillic horizon creeps into, the functional reliability of core bit.
Below in conjunction with accompanying drawing to the utility model argillic horizon creep into, core bit is described further.
Description of drawings
Fig. 1 is for the utility model argillic horizon creeps into, elevational cross-sectional view when first embodiment of core bit is in and creeps into state;
Fig. 2 is that A-A among Fig. 1 is to view;
Fig. 3 is the cross-sectional view of sliding sleeve and the adoptable another kind of structure of slide-bar;
Fig. 4 is for the utility model argillic horizon creeps into, elevational cross-sectional view when first embodiment of core bit is in and carries the brill state;
Fig. 5 is for the utility model argillic horizon creeps into, elevational cross-sectional view when second embodiment of core bit is in and creeps into state;
Fig. 6 is the partial enlarged drawing at B place among Fig. 5;
Fig. 7 is for the utility model argillic horizon creeps into, elevational cross-sectional view when second embodiment of core bit is in and carries the brill state.
The specific embodiment
The utility model argillic horizon as shown in Figure 1 creeps into, first embodiment of core bit, the same with common single tube drilling tool, comprise core barrel 1, the lower end screw thread of core barrel 1 is connected with hole keeper 81, the lower end screw thread of hole keeper 81 is connected with drill bit 84, jump ring 83 is housed in the drill bit 84, also be provided with water proof cover 82 in hole keeper 81 and the drill bit, different is: core barrel 1 upper end internal thread is connected with sliding sleeve 2, slidely connect slide-bar 3 in the sliding sleeve 2 along the vertical direction, as shown in Figure 2, slide-bar 3 cross section in the horizontal direction is regular hexagon, and slide-bar 3 just can drive sliding sleeve 2 around the axis rotation of core barrel 1, as shown in Figure 1 like this, the two ends up and down of slide-bar 3 all pass sliding sleeve 2, the lower end of slide-bar 3 is positioned at core barrel 1, is provided with the up limited block 31 of slide-bar in the lower end on the slide-bar 3, is provided with the slide-bar hollow channel 32 of upper end open in the slide-bar 3, the sidewall of slide-bar 3 is provided with one and goes up through hole 33 and a lower through-hole 34, and last through hole 33 and lower through-hole 34 all are communicated with slide-bar hollow channel 32; The upper end screw thread of slide-bar 3 is connected with tool joint 4, and the lower surface of tool joint 4 is positioned at slide-bar 3 peripheries, is provided with the joint hollow channel 41 of upper end open in the tool joint 4, and joint hollow channel 41 is communicated with slide-bar hollow channel 32.
In order to make the present embodiment operate as normal, also should have as upper/lower positions and concern: when the upper surface of the up limited block 31 of slide-bar contacted with sliding sleeve 2, last through hole 33 was positioned at the top of sliding sleeve 2 upper surfaces, and lower through-hole 34 is covered by the inwall of sliding sleeve 2; When the lower surface of tool joint 4 contacted with sliding sleeve 2, lower through-hole 34 was positioned at the below of sliding sleeve 2 lower surfaces, and upward through hole 33 is covered by the inwall of sliding sleeve 2.Going up through hole 33 and lower through-hole 34 in the present embodiment all is to arrange below tiltedly.
Present embodiment is installed to the drill string lower end by tool joint 4.As shown in Figure 1, when creeping into state, tool joint 4 is subjected to downward thrust, the lower surface of tool joint 4 contacts with sliding sleeve 2, and the interior flushing liquor of drill string this moment stays at the bottom of the hole with the gap between the core barrel 1 by joint hollow channel 41, slide-bar hollow channel 32, lower through-hole 34, the up limited block 31 of slide-bar successively.Because the cross section of slide-bar 3 is non-circular, so when drill string rotates, also can drive core barrel 1 and drill bit 84 rotations, because lower through-hole 34 is to arrange below tiltedly, has downward component velocity from the lower through-hole 34 interior flushing liquors that flow out, add the centrifugal force that rotation produces, flushing liquor will adhere to the inwall of core barrel 1 to dirty, can alleviate flushing liquor washing away the core post like this, and can lubricate inwall to a certain extent, reduce the resistance that the relative core barrel 1 of core post rises.As shown in Figure 4, when carrying the brill state, tool joint 4 is subjected to pulling force upwards, the upper surface of the up limited block 31 of slide-bar contacts with sliding sleeve 2, the interior flushing liquor of drill string this moment passes through joint hollow channel 41, slide-bar hollow channel 32 successively, goes up through hole 33 outflows, core post when carrying brill like this in the core barrel 1 will can not be subjected to the pressure effect of flushing liquor in the drill string, get core thereby finish smoothly.But because can directly being flushed on the borehole wall, the flushing liquor that flows out from last through hole 33 can certain destruction be arranged to hole wall this moment.In the present embodiment, realize that slide-bar 3 can drive sliding sleeve 2 and rotate around the axis of core barrel 1, in fact slide-bar 3 cross section in the horizontal direction gets final product so long as not circle, and as shown in Figure 3, slide-bar 3 cross section in the horizontal direction can also be ellipse.
The utility model argillic horizon creeps into, second embodiment of core bit made further improvement.As shown in Figure 5, the utility model argillic horizon creeps into, the difference of second embodiment of core bit and first embodiment is: the number that goes up through hole 33 and lower through-hole 34 is three (owing to be sectional view, only show wherein two), through hole 33 all is positioned at sustained height on each, and each lower through-hole 34 all is positioned at sustained height.The lower end of tool joint 4 is fixedly connected with guard shield 5 in addition, and guard shield 5 stretches out downwards from the periphery of sliding sleeve 2, and the height of guard shield 5 lower surfaces is lower than the height of going up through hole 33; When the lower surface of tool joint 4 contacted with sliding sleeve 2, the outer wall of the inwall of guard shield 5 and sliding sleeve 2 fitted, and when the upper surface of the up limited block 31 of slide-bar contacted with sliding sleeve 2, guard shield 5 broke away from the outer wall of sliding sleeve 2.Like this, as shown in Figure 7, when carrying the brill state, the flushing liquor that flows out from last through hole 33 will adhere to the inwall of guard shield 5 to dirty.As shown in Figure 7, the upper end 22 of sliding sleeve 2 is the top at last taper type in the present embodiment, like this, when guard shield 5 breaks away from the outer wall of sliding sleeve 2, the upper end 22 of sliding sleeve 2 is still stretched in the guard shield 5, will adhere to the outer wall of sliding sleeve 2 to dirty after the defluent flushing liquor of inwall that adheres to guard shield 5 flows through from the gap between guard shield 5 and the sliding sleeve 2.Like this, flushing liquor will reduce greatly to washing away of borehole wall.In addition, be provided with bearing 61 in the up limited block 31 of slide-bar in the present embodiment, steel ball 62 and ball seat 63, referring to Fig. 6, leave clearance space 311 between the up limited block 31 of the lateral wall of bearing 61 and slide-bar, bearing is provided with communication channel 611 in 61 upper ends, the two ends of last communication channel 611 are communicated with lower end and the clearance space 311 of slide-bar hollow channel 32 respectively, be provided with the steel ball chamber 612 of lower ending opening in the bearing 61, have the following hole 613 that connects that is communicated with steel ball chamber 612 and clearance space 311 on the sidewall of steel ball chamber 612, ball seat 63 is arranged on bearing 61 belows and ball seat 63 is fixedlyed connected with the up limited block 31 of slide-bar, the upper surface of ball seat 63 contacts with the lower surface of bearing 61, be provided with ball seat hollow channel 631 in the ball seat 63 along the vertical direction, the upper end of ball seat hollow channel 631 is communicated with steel ball chamber 612, cavity volume connection in the lower end of ball seat hollow channel 631 and the core barrel 1, the upper end of ball seat hollow channel 631 has groove 6311, steel ball 62 is positioned at groove 6311, bearing 61 like this, steel ball 62 and ball seat 63 constitute an one way valve in the up limited block 31 of slide-bar, cavity volume in the liquid feeding end of this one way valve and the core barrel 1 is communicated with, and the outlet end of one way valve is communicated with the lower end of slide-bar hollow channel 32.Like this, when descending the brill state, referring to Fig. 7, because the effect of gravity, it is basic identical when slide-bar 3 is carried the brill state together with the relative position relation of sliding sleeve 2, lower through-hole 34 is by shutoff, when drilling tool bores down in boring, buoyancy and the drag effect of the flushing liquor in drilling tool itself can be subjected to holing, flushing liquor enters from ball seat hollow channel 631, steel ball 62 breaks away from groove 6311, flushing liquor successively by under connect hole 613, clearance space 311, last communication channel 611 is communicated with slide-bar hollow channel 32, thereby reduces the descending resistance of drilling tool, and reduces to bore down the flushing of hydraulic fluctuation that causes, so just can improve the running speed of permission, increase work efficiency.As shown in Figure 5, present embodiment also is with outside the up limited block 31 of slide-bar and subtracts crack ring 312, subtract between crack ring 312 and the core barrel 1 and leave the gap, when creeping into state, subtract crack ring 312 like this and can assist that to make flushing liquor paste core barrel 1 inwall dirty, certainly, reach this effect, also can be directly design the diameter of the up limited block 31 of slide-bar bigger.In addition, present embodiment as shown in Figure 5, is embedded with sealing ring 71 for the component gap is sealed in the lateral wall of sliding sleeve 2, and when the lower surface of tool joint 4 contacted with sliding sleeve 2, the lower end of guard shield 5 was positioned at the below of sealing ring 71; The lower end of the sliding sleeve 2 up limited block 31 of corresponding slide-bar is provided with the limit chamber 21 of lower ending opening, the upper end shape of the up limited block 31 of the shape of limit chamber 21 and slide-bar is coincide, be embedded with second sealing ring 72 in the sidewall of limit chamber 21, sealing ring 71 and second sealing ring 72 play sealing function respectively at the state of creeping into when carrying the brill state like this, so that the service behaviour of present embodiment is more reliable.
The utility model argillic horizon creeps into, the improvement part of core bit is the component of core barrel more than 1, the structure of core barrel below 1 can adopt existing various structures in the prior art, and component technical problems to be solved such as drill bit, jump ring, hole keeper are not that the utility model argillic horizon creeps into, the improvement part of core bit technical problem to be solved.The utility model argillic horizon creeps into, in the core bit, the number of last through hole and lower through-hole can be at least one, the one way valve that is made of in the up limited block of slide-bar bearing, steel ball and ball seat can substitute with other structure one-way valves of the prior art.
Above-described embodiment is described preferred embodiment of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model all should fall in the definite protection domain of the utility model claims.
Claims (9)
1. an argillic horizon creeps into, core bit, comprise core barrel (1), it is characterized in that: the upper end internal thread of described core barrel (1) is connected with sliding sleeve (2), slidely connect slide-bar (3) in the sliding sleeve (2) along the vertical direction, slide-bar (3) can drive sliding sleeve (2) and rotate around the axis of core barrel (1), the two ends up and down of slide-bar (3) all pass described sliding sleeve (2), the lower end of slide-bar (3) is positioned at described core barrel (1), slide-bar (3) upward is provided with the up limited block of slide-bar (31) in the lower end, be provided with the slide-bar hollow channel (32) of upper end open in the slide-bar (3), the sidewall of slide-bar (3) is provided with through hole at least one (33) and at least one lower through-hole (34), through hole on each (33) all is positioned at sustained height, each lower through-hole (34) all is positioned at sustained height, and through hole on each (33) and each lower through-hole (34) all are communicated with slide-bar hollow channel (32); The upper end of slide-bar (3) is fixedly connected with tool joint (4), the lower surface of tool joint (4) is positioned at slide-bar (3) periphery, be provided with the joint hollow channel (41) of upper end open in the tool joint (4), joint hollow channel (41) is communicated with slide-bar hollow channel (32); When the upper surface of the up limited block of described slide-bar (31) and sliding sleeve (2) when contacting, through hole on each (33) is positioned at the top of sliding sleeve (2) upper surface, and each lower through-hole (34) is covered by the inwall of sliding sleeve (2); When the lower surface of described tool joint (4) and sliding sleeve (2) when contacting, each lower through-hole (34) is positioned at the below of sliding sleeve (2) lower surface, and through hole (33) is covered by the inwall of sliding sleeve (2) on each.
Argillic horizon according to claim 1 creep into, core bit, it is characterized in that: the lower end of described tool joint (4) is fixedly connected with guard shield (5), guard shield (5) stretches out downwards from the periphery of described sliding sleeve (2), and the height of guard shield (5) lower surface is lower than the described height of going up through hole (33); When the lower surface of described tool joint (4) and sliding sleeve (2) when contacting, the outer wall of the inwall of guard shield (5) and described sliding sleeve (2) fits, when the upper surface of the up limited block of described slide-bar (31) and sliding sleeve (2) when contacting, the outer wall that guard shield (5) breaks away from described sliding sleeve (2).
Argillic horizon according to claim 2 creep into, core bit, it is characterized in that: be provided with one way valve in the up limited block of described slide-bar (31), cavity volume in the liquid feeding end of described one way valve and the described core barrel (1) is communicated with, and the outlet end of described one way valve is communicated with the lower end of described slide-bar hollow channel (32).
4. argillic horizon according to claim 3 creeps into, core bit, it is characterized in that: described one way valve comprises the bearing (61) that is arranged in the up limited block of slide-bar (31), steel ball (62) and ball seat (63), leave clearance space (311) between the lateral wall of described bearing (61) and the up limited block of described slide-bar (31), described bearing (61) is provided with communication channel (611) in the upper end, described two ends of going up communication channel (611) are communicated with lower end and the described clearance space (311) of described slide-bar hollow channel (32) respectively, be provided with the steel ball chamber (612) of lower ending opening in the described bearing (61), have the following hole (613) that connects that is communicated with steel ball chamber (612) and described clearance space (311) on the sidewall of steel ball chamber (612), described ball seat (63) is arranged on bearing (61) below and ball seat (63) is fixedlyed connected with the up limited block of described slide-bar (31), the upper surface of ball seat (63) contacts with the lower surface of bearing (61), be provided with ball seat hollow channel (631) in the described ball seat (63) along the vertical direction, the upper end of ball seat hollow channel (631) is communicated with steel ball chamber (612), cavity volume connection in the lower end of ball seat hollow channel (631) and the described core barrel (1), the upper end of ball seat hollow channel (631) has groove (6311), and described steel ball (62) is positioned at described groove (6311).
Argillic horizon according to claim 4 creep into, core bit, it is characterized in that: described on each through hole (33) and each lower through-hole (34) all be to arrange along oblique below.
Argillic horizon according to claim 5 creep into, core bit, it is characterized in that: described slide-bar (3) cross section in the horizontal direction is regular hexagon.
Argillic horizon according to claim 6 creep into, core bit, it is characterized in that: the upper end of described sliding sleeve (2) is the top at last taper type.
Argillic horizon according to claim 7 creep into, core bit, it is characterized in that: be embedded with sealing ring (71) in the lateral wall of described sliding sleeve (2), when the lower surface of described tool joint (4) and sliding sleeve (2) when contacting, the lower end of described guard shield (5) is positioned at the below of described sealing ring (71).
Argillic horizon according to claim 8 creep into, core bit, it is characterized in that: the corresponding up limited block of described slide-bar in the lower end of described sliding sleeve (2) (31) is provided with the limit chamber (21) of lower ending opening, the upper end shape of the shape of described limit chamber (21) and the up limited block of described slide-bar (31) is coincide, and is embedded with second sealing ring (72) in the sidewall of described limit chamber (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320031037 CN203066857U (en) | 2013-01-18 | 2013-01-18 | Drilling tool for clay layer drilling and coring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320031037 CN203066857U (en) | 2013-01-18 | 2013-01-18 | Drilling tool for clay layer drilling and coring |
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| Publication Number | Publication Date |
|---|---|
| CN203066857U true CN203066857U (en) | 2013-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320031037 Expired - Fee Related CN203066857U (en) | 2013-01-18 | 2013-01-18 | Drilling tool for clay layer drilling and coring |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106194090A (en) * | 2016-09-19 | 2016-12-07 | 中国科学院武汉岩土力学研究所 | It is suitable in the thin silt below level of ground water the drill bit crept into |
| CN106351598A (en) * | 2015-07-14 | 2017-01-25 | 中国石油天然气股份有限公司 | Sand fishing device |
| CN106481297A (en) * | 2016-12-02 | 2017-03-08 | 吉林大学 | A kind of vortex tube is incubated Sampling driller |
| CN106761382A (en) * | 2016-12-20 | 2017-05-31 | 西南石油大学 | A kind of deep-well coring device and its operating method |
| WO2020093411A1 (en) * | 2018-11-08 | 2020-05-14 | 深圳大学 | Drilling fluid channel structure of core drilling rig |
| CN112267845A (en) * | 2020-09-24 | 2021-01-26 | 深圳华力岩土工程有限公司 | Stirring pile drilling and coring structure and operation process |
| CN114263442A (en) * | 2021-12-27 | 2022-04-01 | 国家能源集团宁夏煤业有限责任公司 | Drilling coring device and drilling coring method |
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2013
- 2013-01-18 CN CN 201320031037 patent/CN203066857U/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351598B (en) * | 2015-07-14 | 2019-01-18 | 中国石油天然气股份有限公司 | Sand-bailing equipment |
| CN106351598A (en) * | 2015-07-14 | 2017-01-25 | 中国石油天然气股份有限公司 | Sand fishing device |
| CN106194090A (en) * | 2016-09-19 | 2016-12-07 | 中国科学院武汉岩土力学研究所 | It is suitable in the thin silt below level of ground water the drill bit crept into |
| CN106194090B (en) * | 2016-09-19 | 2018-11-30 | 中国科学院武汉岩土力学研究所 | It is suitble to the drill bit crept into level of ground water thin silt below |
| CN106481297A (en) * | 2016-12-02 | 2017-03-08 | 吉林大学 | A kind of vortex tube is incubated Sampling driller |
| CN106481297B (en) * | 2016-12-02 | 2018-08-07 | 吉林大学 | A kind of vortex tube heat preservation Sampling driller |
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| US11859450B2 (en) | 2018-11-08 | 2024-01-02 | Shenzhen University | Drilling fluid channel structure of core drilling rig |
| CN112267845A (en) * | 2020-09-24 | 2021-01-26 | 深圳华力岩土工程有限公司 | Stirring pile drilling and coring structure and operation process |
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| CN114263442A (en) * | 2021-12-27 | 2022-04-01 | 国家能源集团宁夏煤业有限责任公司 | Drilling coring device and drilling coring method |
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