CN103206171A - Coring bit with pressure drilling at circulation break - Google Patents
Coring bit with pressure drilling at circulation break Download PDFInfo
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- CN103206171A CN103206171A CN2013101046703A CN201310104670A CN103206171A CN 103206171 A CN103206171 A CN 103206171A CN 2013101046703 A CN2013101046703 A CN 2013101046703A CN 201310104670 A CN201310104670 A CN 201310104670A CN 103206171 A CN103206171 A CN 103206171A
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- drill bit
- piston
- spring
- drills
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Abstract
A coring bit with pressure drilling at circulation break comprises a bit pillar, at least two pistons and a spring. The spring is embedded in the inner portion of the bit pillar, the upper end of the spring is contacted with the inner surface of the bit pillar, and the lower end of the spring is connected with the pistons. The bit pillar comprises a liquid injecting port and a liquid draining port. A pressure limiting device is formed by a piston A and the spring to enable certain pressure to be satisfied in a hydraulic chamber and exert the pressure on a piston B to transmit the pressure to a core. With the coring bit, damages to the core can be avoided and coring integrity is good, so that the coring bit has an important significance in site investigating and extracting of laboratory investigation data.
Description
Technical field
The present invention relates to a kind of geotechnical engineering rock sample core bit, particularly a kind of band press dry and drills through heart drill bit.
Background technology
In geotechnical engineering and petroleum works, mechanical properties of rock is the most basic data of engineering design, often to obtain the mechanics parameter of engineering rock by a large amount of Experiments of Machanics, and drilling through of rock sample is the first step of whole process, it also is the first step that influences experimental data validity, draw a problem thus: the process of coring necessarily comprises damage, these damages have certain influence to the later stage parameter measurement, hard or high strength rocks for some, this influence can be ignored and not remember, and for glued a little less than some, stratiform or fissured rock, the success rate of coring is extremely low, even if obtain complete rock core, the influence of damage is also very remarkable to the change of rock property.
Summary of the invention
The present invention namely provides a kind of solution process of coring to discharge because of axial compression at above-mentioned defective and rock core cylinder wall and drill bit wall friction cause that band that rock core damages press dry and drill through heart drill bit.
To achieve these goals, a first aspect of the present invention provides a kind of band to press dry and drills through heart drill bit.
Press dry according to the band of first aspect present invention and to drill through heart drill bit and comprise drill bit post, piston, spring, its medi-spring inlay bur headpin inside, the spring upper end contacts with drill bit post inner surface, and the spring lower end links to each other with piston, comprises liquid injection port and leakage fluid dram on the drill bit post.
Preferably, the quantity of described piston is at least two.
Preferably, described band press dry the piston that drills through heart drill bit and comprises piston A and piston B.
Preferably, described band press dry and drills through heart drill bit and also comprise swivel joint.
Preferably, the top of described piston A links to each other with spring.
Preferably, described piston B lower end links to each other with described swivel joint.
Preferably, constitute hydraulic cavities between described piston A and the described piston B.
Preferably, the side of described piston B cooperates with drill bit post inner surface.
Preferably, the fit system of the side of described piston B and drill bit post inner surface is matched in clearance.
Preferably, the fit system of the side of described piston B and drill bit post inner surface is interference fits.
Preferably, described piston A and spring constitute pressure limiting device, and described pressure limiting device makes and satisfies certain pressure in the hydraulic cavities, and this pressure is applied on the piston B, then this pressure is passed to rock core.
Preferably, the material of described drill bit post is the 45# steel.
Preferably, the material of described drill bit post is alloy steel.
Preferably, be provided with graduation mark at drill bit column outer wall face.
Preferably, described drill bit post bottom is connected with drill bit.
Preferably, described drill bit comprises bit teeth.
Preferably, described swivel joint comprises rotating part and non-rotating part.
Preferably, the rotating part of described swivel joint contacts with piston B.
Preferably, the non-rotating part of described swivel joint contacts with rock core.
Preferably, the material of described piston A is the 45# steel.
Preferably, the material of described piston B is the 45# steel.
Preferably, the material of described spring is alloy spring wire.
Preferably, the material of described spring is 60Si
2Mn.
The band of first aspect present invention press dry the working method that drills through heart drill bit: liquid is injected hydraulic cavities from liquid injection port, make and fill with liquid in the hydraulic cavities, close liquid injection port then, promote swivel joint at hydraulic action lower piston B and contact with rock; Promote drill bit to pressing down, and the rotary cutting rock, this moment, the internal pressure of hydraulic cavities raise in the drill bit along with the drill bit post presses down, and simultaneously, the interior pressure of hydraulic cavities promotes piston A and moves up, and spring hinders the movement of piston A; When the pressure in the hydraulic cavities reached predetermined value, piston A moved up under hydraulic action and compresses spring, and the deflection of spring surpasses certain limit, and the lower end of piston A is retracted into leakage fluid dram when above, and the interior liquid of hydraulic cavities is discharged from leakage fluid dram; At this moment, pressure in the hydraulic cavities descends, the suffered liquid internal pressure in piston A lower end reduces, under the pressure differential effect of spring force and liquid internal pressure, piston A moves downward, thereby makes the liquid internal pressure in the hydraulic cavities return to certain value, and impels piston B to promote swivel joint and push down rock core, after this, continue to promote drill bit to pressing down and the rotary cutting rock.
Drill bit presses down in the process, and the interior pressure of hydraulic cavities raises again in the drill bit, and promotion piston A moves up and is higher than leakage fluid dram, liquid in the hydraulic cavities is discharged, drops in the hydraulic cavities, piston A moves downward, and the hydraulic cavities sealing also guarantees that certain pressure impels piston B to promote swivel joint and contacts with rock core.
Band press dry and drills through heart drill bit such as above-mentioned process circulates repeatedly, constantly promotes the drill bit post to pressing down, and the rotary cutting rock core, core at every turn finish after, can inject liquid by liquid injection port, be sealing state during hydraulic cavities work.
The band that first aspect present invention provides press dry and drills through heart drill bit and can avoid infringement to rock core, and the success rate of coring height all has very strong necessity for the extraction of on-site land survey and laboratory research data.
The band that first aspect present invention provides press dry any combination that the technical scheme that drills through heart drill bit comprises each part mentioned above, and the simple change of each part mentioned above assembly or combination still are protection scope of the present invention.
A second aspect of the present invention also provides a kind of band to press dry and drills through heart method, and it comprises the steps:
A. in drill bit post hydraulic cavities, fill with liquid by liquid injection port;
B. liquid injection port is sealed;
C. promoting piston B makes it to contact with swivel joint;
D. promoting swivel joint contacts with rock;
E. depress drill bit towards the rock matrix direction;
F. the rotary drill bit post cuts rock;
G. drill bit stops cutting, removal of core after piercing the default degree of depth.
Preferably, above steps in sequence is carried out.
Preferably, the band that provides for first aspect present invention of described drill bit press dry and drills through heart drill bit.
Preferably, described band press dry and drills through heart drill bit and comprise piston A and piston B.
Preferably, the top of described piston A links to each other with spring.
Preferably, described piston B lower end links to each other with described swivel joint.
Preferably, the side of described piston B cooperates with drill bit post inner surface.
Preferably, be provided with graduation mark at drill bit column outer wall face.
More multioperation all is known for those of ordinary skills, repeats no more.
The band that second aspect present invention provides press dry any combination that the technical scheme that drills through heart method comprises each part mentioned above, and the simple change of each part mentioned above assembly or combination still are protection scope of the present invention.
Description of drawings
Fig. 1 is for pressing dry the structural representation of a preferred embodiment that drills through heart drill bit according to the band of first aspect present invention;
Fig. 2 is the process of coring schematic diagram embodiment illustrated in fig. 1.
Numeral is represented respectively among Fig. 1, Fig. 2:
1 spring, 2 piston A
3 leakage fluid drams, 4 liquid injection port
5 hydraulic cavities, 6 drill bit posts
7 piston B, 8 swivel joints
9 rock cores, 10 rock mass
The specific embodiment
In order to understand the present invention better, describe the preferred embodiment that press dry the structure that drills through heart drill bit according to the band of first aspect present invention in detail below in conjunction with accompanying drawing.
Fig. 1 is for pressing dry the structural representation of a preferred embodiment that drills through heart drill bit according to the band of first aspect present invention, in the present embodiment, band press dry and drills through heart drill bit and comprise drill bit post 6, piston A2, piston B7, spring 1, its medi-spring 1 inlay bur headpin 6 inside, spring 1 upper end contacts with drill bit post 6 inner surfaces, and spring 1 lower end links to each other with piston A2, comprises liquid injection port 4 and leakage fluid dram 3 on the drill bit post 6, piston B7 lower end links to each other with swivel joint 8, constitutes hydraulic cavities 5 between piston A2 and the piston B7.
In the present embodiment, the side of described piston B7 cooperates with the inner surface of drill bit post 6.
In the present embodiment, the fit system of the side of described piston B7 and drill bit post 6 inner surfaces is matched in clearance.
In the present embodiment, the fit system of the side of described piston B7 and drill bit post 6 inner surfaces is interference fits.
In the present embodiment, described piston A2 and spring 1 constitute pressure limiting device, and described pressure limiting device makes in the hydraulic cavities 5 and satisfies certain pressure, and this pressure is applied on the piston B7, then this pressure is passed to rock core 9.
In the present embodiment, the material of described drill bit post 6 is the 45# steel.
In the present embodiment, the material of described drill bit post 6 is alloy steel.
In the present embodiment, the material of described piston A2 is the 45# steel.
In the present embodiment, the material of described piston B7 is the 45# steel.
In the present embodiment, the material of described spring 1 is alloy spring wire.
In the present embodiment, described swivel joint comprises rotating part and non-rotating part.
In the present embodiment, the rotating part of described swivel joint contacts with piston B.
In the present embodiment, the non-rotating part of described swivel joint contacts with rock core.
Band press dry the working method that drills through heart drill bit and is in the present embodiment: liquid is injected hydraulic cavities 5 from liquid injection port 4, make in the hydraulic cavities 5 and fill with liquid, close liquid injection port 4 then, promote swivel joint 8 at hydraulic action lower piston B7 and contact with rock mass 10; Promote drill bit post 6 to pressing down, and the rotary cutting rock, this moment, the internal pressure of hydraulic cavities 5 raise in the drill bit post 6 along with drill bit post 6 presses down, and simultaneously, the interior pressure of hydraulic cavities 5 promotes piston A2 and moves up, and spring 1 hinders the movement of piston A2; When the pressure in the hydraulic cavities 5 reached predetermined value, piston A2 moved up under hydraulic action and compresses spring 1, and the deflection of spring 1 surpasses certain limit, and the lower end of piston A2 is retracted into leakage fluid dram 3 when above, and the liquid in the hydraulic cavities 5 are from leakage fluid dram 3 discharges; At this moment, pressure in the hydraulic cavities 5 descends, the suffered liquid internal pressure in piston A2 lower end reduces, under the pressure differential effect of the elastic force of spring 1 and liquid internal pressure, piston A2 moves downward, thereby makes the liquid internal pressure in the hydraulic cavities 5 return to certain value, and impels piston B7 to promote swivel joint 8 and push down rock core 9, after this, continue to promote drill bit post 6 to pressing down and the rotary cutting rock.
Drill bit post 6 presses down in the process, the interior pressure of hydraulic cavities 5 raises again in the drill bit post 6, promotion piston A2 moves up and is higher than leakage fluid dram 3, liquid in the hydraulic cavities 5 is discharged, drops in the hydraulic cavities 5, piston A2 moves downward, and hydraulic cavities 5 sealings also guarantee that certain pressure impels piston B7 to promote swivel joint 8 and contacts with rock core 9.
In the present embodiment, band press dry and drills through heart drill bit such as above-mentioned process circulates repeatedly, constantly promotes drill bit post 6 to pressing down, and rotary cutting rock core 9, after work is finished, can inject liquid by liquid injection port, is sealing state during work.
Fig. 2 is the process of coring schematic diagram embodiment illustrated in fig. 1, the duty of X when just having begun to core in the present embodiment, and this moment, hydraulic cavities 5 volumes were bigger, and required liquid is more, and the stroke of spring 1 is less; State shown in the Y is one of the state in the pilot process of coring, state shown in the medium Z of volume of hydraulic cavities 5 is to core to finish preceding state at this moment, this moment, the process of coring drew to an end, after this, by regulating the inlet discharge capacity to higher value, the drilling cuttings in the wash boring slowly rotates and promotes drill bit to the position shown in the X, take out cutting good cylindrical rock core, the rock core that cleaning is taken out and numbering then.
More multioperation all is known for those of ordinary skills, repeats no more.
Band described in the present embodiment press dry and drills through heart drill bit and can avoid infringement to rock core, and the success rate of coring height all has good effect preferably for the extraction of on-site land survey and laboratory research data.
The described band of present embodiment press dry any combination that the technical scheme that drills through heart drill bit comprises each part mentioned above, and the simple change of each part mentioned above assembly or combination still are protection scope of the present invention.
Claims (9)
1. a band press dry and drills through heart drill bit, comprises drill bit, piston, spring, its medi-spring inlay bur head inside, the spring upper end contacts with the drill bit inner surface, the spring lower end links to each other with piston, comprises liquid injection port and leakage fluid dram on the drill bit, it is characterized in that: the quantity of described piston is at least two.
2. band as claimed in claim 1 press dry and drills through heart drill bit, it is characterized in that: described band press dry the piston that drills through heart drill bit and comprises piston A and piston B, and the top of described piston A links to each other with spring.
3. band as claimed in claim 1 press dry and drills through heart drill bit, it is characterized in that: described band press dry and drills through heart drill bit and comprise swivel joint.
4. press dry as claim 2 or 3 described bands and drill through heart drill bit, it is characterized in that: described piston B lower end links to each other with described swivel joint.
5. band as claimed in claim 4 press dry and drills through heart drill bit, it is characterized in that: the side of described piston B cooperates with drill bit post inner surface.
6. band as claimed in claim 2 press dry and drills through heart drill bit, it is characterized in that: the fit system of the side of described piston B and drill bit post inner surface is matched in clearance.
7. band as claimed in claim 1 press dry and drills through heart drill bit, it is characterized in that: the material of described drill bit post is alloy steel.
8. band as claimed in claim 2 press dry and drills through heart drill bit, it is characterized in that: the material of described piston A is the 45# steel.
9. band as claimed in claim 2 press dry and drills through heart drill bit, it is characterized in that: the material of described piston B is the 45# steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310104670.3A CN103206171B (en) | 2013-03-27 | 2013-03-27 | Drilled dry core bit with pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310104670.3A CN103206171B (en) | 2013-03-27 | 2013-03-27 | Drilled dry core bit with pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103206171A true CN103206171A (en) | 2013-07-17 |
| CN103206171B CN103206171B (en) | 2015-07-29 |
Family
ID=48753558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310104670.3A Expired - Fee Related CN103206171B (en) | 2013-03-27 | 2013-03-27 | Drilled dry core bit with pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103206171B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3504750A (en) * | 1967-03-09 | 1970-04-07 | Wladimir Tiraspolsky | Coring device with controlled releasing |
| US20030089526A1 (en) * | 2000-05-10 | 2003-05-15 | Beeker Arnoldus Emanuel Ruthgerus | Grondmonsternemer |
| CN201130111Y (en) * | 2007-11-15 | 2008-10-08 | 中国石化集团胜利石油管理局钻井工艺研究院 | Drill stem type hydrated compound probe boring coring apparatus |
| CN102155177A (en) * | 2011-03-11 | 2011-08-17 | 刘国经 | Wire-line core drilling hydraulic impactor |
| CN102418520A (en) * | 2011-12-31 | 2012-04-18 | 中国地质大学（北京） | Water-locking type unconsolidated formation sampling drilling tool |
| CN202266217U (en) * | 2011-08-28 | 2012-06-06 | 中国石油集团长城钻探工程有限公司 | Heat-preserving and pressure-maintaining coring tool |
| CN203285340U (en) * | 2013-03-27 | 2013-11-13 | 中国石油大学(北京) | With-pressure drying drill coring bit |
-
2013
- 2013-03-27 CN CN201310104670.3A patent/CN103206171B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3504750A (en) * | 1967-03-09 | 1970-04-07 | Wladimir Tiraspolsky | Coring device with controlled releasing |
| US20030089526A1 (en) * | 2000-05-10 | 2003-05-15 | Beeker Arnoldus Emanuel Ruthgerus | Grondmonsternemer |
| CN201130111Y (en) * | 2007-11-15 | 2008-10-08 | 中国石化集团胜利石油管理局钻井工艺研究院 | Drill stem type hydrated compound probe boring coring apparatus |
| CN102155177A (en) * | 2011-03-11 | 2011-08-17 | 刘国经 | Wire-line core drilling hydraulic impactor |
| CN202266217U (en) * | 2011-08-28 | 2012-06-06 | 中国石油集团长城钻探工程有限公司 | Heat-preserving and pressure-maintaining coring tool |
| CN102418520A (en) * | 2011-12-31 | 2012-04-18 | 中国地质大学（北京） | Water-locking type unconsolidated formation sampling drilling tool |
| CN203285340U (en) * | 2013-03-27 | 2013-11-13 | 中国石油大学(北京) | With-pressure drying drill coring bit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103206171B (en) | 2015-07-29 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Granted publication date: 20150729 Termination date: 20160327 |