CN108930517A - Hard rock core drill - Google Patents
Hard rock core drill Download PDFInfo
- Publication number
- CN108930517A CN108930517A CN201810917788.0A CN201810917788A CN108930517A CN 108930517 A CN108930517 A CN 108930517A CN 201810917788 A CN201810917788 A CN 201810917788A CN 108930517 A CN108930517 A CN 108930517A
- Authority
- CN
- China
- Prior art keywords
- drill bit
- blade
- core pipe
- drill
- hard rock
- Prior art date
- 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.)
- Granted
Links
- 239000011435 rock Substances 0.000 title claims abstract description 31
- 239000002826 coolant Substances 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims description 9
- 238000005553 drilling Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 abstract description 6
- 230000035515 penetration Effects 0.000 abstract description 5
- 238000005299 abrasion Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 230000003020 moisturizing effect Effects 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/02—Core bits
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Earth Drilling (AREA)
Abstract
The present invention relates to hard rock core drill, including outer core pipe and hollow boring bit, drill bit is mounted on outer core pipe lower end, and outer core pipe and drill bit outer wall are equipped with helicla flute, and the helicla flute on drill bit and the helicla flute in outer core pipe are continuous；Drill bit includes interior drill bit and outer drill bit, and interior drill bit is mounted in outer drill bit, and there is first order blade in interior drill bit lower end, and outer drill bit outer wall has second level blade, is equipped with coolant circuit hole at first order blade and second level blade.Drill bit is divided into second level blade in the present invention, bores aperture first by the lowermost blade, then by the blade reaming of top, rate of penetration can be improved, improves coring efficiency；Coolant circuit hole is respectively provided at blade position, and coolant liquid can gush out cooling blade by the through-hole, accelerate the cooling velocity of blade, reduce the abrasion of cutter, extend the service life of blade；Have in outer core pipe with the continuous helicla flute of drill bit, as outer core pipe screws in rock stratum, outer core pipe gives coring tool to create a confined space, and fidelity cabin can be prevented contaminated.
Description
Technical field
The present invention relates to cores to drill through equipment technical field more particularly to hard rock core drill.
Background technique
During oil field prospecting, core is discovery oil-gas Layer and research stratum, source bed, oil reservoirs, cap rock, construction etc.
Capsule information lithology, physical property and oil-containing, the gas and water of subterranean strata can directly be understood by the observational study to core
Attitude Characteristics.After the investment exploitation of oil field, oil reservoir deposition characteristics, the physical property of reservoir, hole are further studied and recognized by core
Gap structure, wetability, relative permeability, lithofacies characteristics, reservoir physics simulation and reservoir water flooding rule；Understanding and grasp difference are opened
It hair stage, different water cut stages reservoir water flooding feature, gets remaining oil distribution clear, is designed for oilfield development program, series of strata, well pattern tune
Whole and Encryption Well provides scientific basis.
Coring is that subsurface rock is got on ground blockingly using special coring tool in drilling process, this
The blocking rock of kind is called core, and the various properties of rock can be measured by it, and intuitively Study of The Underground construction and rock are heavy
Product environment, understands fluid properties therein etc..In mineral exploration and development process, need by geological design stratigraphic horizon and
Depth carries out drilling work, the tripping in coring tool into well, the rock sample drilled through out.
And drilling tool is the essential tool of coring, existing coring bit, rate of penetration is slower, coring low efficiency；
In addition, the blade cooling velocity of coring bit is slow, the service life of the quick abrasion of cutter, blade is short.
Summary of the invention
The present invention is intended to provide hard rock core drill, drill bit has second level blade, rate of penetration can be improved, raising takes
Core efficiency；It can accelerate cooling blade by the way that coolant circuit hole is arranged, extend the service life of blade.
In order to achieve the above objectives, The technical solution adopted by the invention is as follows:
Hard rock core drill, including hollow drill bit, the drill bit includes for the first order blade of drilling and for expanding
The second level blade in hole.
Further, the drill bit includes interior drill bit and outer drill bit, and the interior drill bit is mounted in outer drill bit, first order knife
Piece is located at interior drill bit lower end, and second level blade is located at outer drill bit outer wall.
Further, the position that first order blade is corresponded on outer drill bit has first order blade to avoid notch, first order blade
Gap opened is avoided in the front end face of outer drill bit.
Further, hard rock core drill further includes outer core pipe, and the drill bit is mounted on outer core pipe lower end, outer core pipe
It is equipped with helicla flute with drill bit outer wall, the helicla flute on drill bit and the helicla flute in outer core pipe are continuous.
Preferably, there are three the first order blade is set at equal intervals in circumferencial direction.
Preferably, there are three second level blade is set at equal intervals in circumferencial direction.
Further, coolant circuit hole is equipped at first order blade and second level blade on drill bit.
Preferably, the coolant circuit hole at the blade of the second level is strip-shaped hole.
Preferably, the coolant circuit hole at first order blade is arcuate socket, and arcuate socket is opened on the front end face of drill bit.
Further, drill bit inner wall is equipped with sealing ring, using elastomeric circumferential sealing ring, realizes in location of the coring procedure to rock
The package of core reaches isolation shelf effect, reaches moisturizing, target of guaranteeing the quality.
Wherein, drill bit is PCD cutter.
Compared with prior art, the invention has the following advantages:
1, drill bit is divided into second level blade in the present invention, bores aperture first by the lowermost blade, then expanded by the blade of top
Rate of penetration can be improved in hole, improves coring efficiency；Rock stratum is cut using the thin lip drill bit of hard alloy orifice, reduces coring mistake
Disturbance of the journey to stratum guarantees coring integrity degree and quality；
2, through-hole is respectively provided with as coolant circuit hole at blade position, and coolant liquid can gush out cooling by the through-hole
Blade accelerates the cooling velocity of blade, reduces the abrasion of cutter, extends the service life of blade；
3, the outer wall of outer core pipe be provided with the continuous helicla flute of drill bit, as outer core pipe screws in rock stratum, outer core pipe given
Coring tool creates a confined space, and fidelity cabin can be prevented contaminated；
4, drill bit inner wall is equipped with sealing ring, using elastomeric circumferential sealing ring, realizes the packet in location of the coring procedure to core
It wraps up in, reaches isolation shelf effect, reach moisturizing, target of guaranteeing the quality.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of drill bit；
Fig. 2 is the structural schematic diagram of outer drill body；
Fig. 3 is the structural schematic diagram of interior drill body；
Fig. 4 is structural schematic diagram when drill bit is mounted in outer core pipe；
In figure: 1- drill bit, 2- first order blade, the second level 3- blade, 4- helicla flute, 5- outer core pipe, 6- coolant circuit
Hole, 7- first order blade evacuation notch, 8- sealing ring, the outer drill bit of drill bit, 12- in 11-, drill body, the 112- first order in 111-
The outer drill body of blade installation slot, 121-, the second level 122- blade installation slot.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing, to the present invention into
Row is further described.
As shown in Figure 1, 2, 3, hard rock core drill disclosed by the invention, including hollow drill bit 1, drill bit 1 is PCD knife
Tool.Drill bit 1 includes the first order blade 2 for drilling and the second level blade 3 for reaming.
Drill bit 1 includes interior drill bit 11 and outer drill bit 12, and interior drill bit 11 includes first order blade 2 and hollow interior drill body
111.As shown in figure 3, there is a first order blade installation slot 112 for installing first order blade 2 in interior 111 lower end of drill body, first
Grade blade installation slot 112 is opened on the lower end surface of interior drill body 111, has at first order blade installation slot 112 on interior drill body 111
Coolant circuit hole 6, the coolant circuit hole 6 be arcuate socket, arcuate socket be opened on the front end face of drill bit 1 and with first order knife
Piece mounting groove 112 is connected to.It is set at equal intervals in circumferencial direction there are three first order blade installation slot 112 on interior drill body 111, each
It is equipped with coolant circuit hole 6 at first order blade installation slot 112, is mounted in each first order blade installation slot 112
Level-one blade 2.Interior 111 inner wall of drill body is equipped with sealing ring 8, and using elastomeric circumferential sealing ring, it is right in location of the coring procedure to realize
The package of core reaches isolation shelf effect, reaches moisturizing, target of guaranteeing the quality.
Outer drill bit 12 includes second level blade 3 and hollow outer drill body 121.As shown in Fig. 2, 3 outer wall of second level blade
There is the second level blade installation slot 122 for installing second level blade 3, on outer drill body 121 at second level blade installation slot 122
There is coolant circuit hole 6, which is strip-shaped hole, and strip-shaped hole is connected to second level blade installation slot 122.Outer brill
It is set at equal intervals in circumferencial direction there are three second level blade installation slot 122 on cutter hub 121, each second level blade installation slot 122
Place is equipped with coolant circuit hole 6, is mounted on second level blade 3 in each second level blade installation slot 122.
Interior drill bit 11 is mounted in outer drill bit 12, and there is first order knife in the position that first order blade 2 is corresponded on outer drill body 121
Piece avoids notch 7, and first order blade evacuation notch 7 is opened on the front end face of outer drill bit 12, and the cutting edge of first order blade 2 is from the
Outer drill body 121 is exposed at level-one blade evacuation notch 7.Blade with a thickness of 3.2mm in present embodiment.
Drill bit is divided into second level blade in the present invention, bores aperture first by the lowermost first order blade 2, then by the of top
3 reaming of second level blade, can be improved rate of penetration.Through-hole is respectively provided with as coolant circuit hole 6 at blade position, and coolant liquid can
To be sprayed by the through-hole, to cool down blade.The present invention cuts rock stratum using the thin lip drill bit of hard alloy orifice, reduces coring mistake
Disturbance of the journey to stratum guarantees coring integrity degree and quality.
As shown in figure 4, hard rock core drill further includes outer core pipe 5 in another embodiment, drill bit 1 is mounted on outer core pipe
5 lower ends, the upper end of outer drill body 121 are connect with the lower end of outer core pipe 5, and outer core pipe 5 and outer 121 outer wall of drill body are equipped with spiral
Slot 4, the helicla flute 4 on helicla flute 4 and outer core pipe 5 on outer drill body 121 are continuous.5 phase of outer core pipe of outer wall setting helicla flute 4
When in boring outside spiral, as outer core pipe 5 screws in rock stratum, outer core pipe 5 creates a confined space to coring tool, and sealing ring 8 exists
To the package of core in location of the coring procedure, prevent fidelity cabin contaminated.
Certainly, the present invention can also have other numerous embodiments, without deviating from the spirit and substance of the present invention,
Those skilled in the art can make various corresponding changes and modifications, but these corresponding changes and change according to the present invention
Shape all should fall within the scope of protection of the appended claims of the present invention.
Claims (10)
1. hard rock core drill, it is characterised in that: including hollow drill bit (1), the drill bit (1) includes first for drilling
Grade blade (2) and the second level blade (3) for reaming.
2. hard rock core drill according to claim 1, it is characterised in that: the drill bit (1) include interior drill bit (11) and
Outer drill bit (12), the interior drill bit (11) are mounted in outer drill bit (12), and first order blade (2) is located at interior drill bit (11) lower end,
Second level blade (3) is located at outer drill bit (12) outer wall.
3. hard rock core drill according to claim 2, it is characterised in that: correspond to first order blade on outer drill bit (12)
(2) position has first order blade to avoid notch (7), and first order blade evacuation notch (7) is opened on the front end of outer drill bit (12)
Face.
4. hard rock core drill according to claim 1 or 2, it is characterised in that: further include outer core pipe (5), the drill bit
(1) it is mounted on outer core pipe (5) lower end, outer core pipe (5) and drill bit (1) outer wall are equipped with helicla flute (4), on drill bit (1)
Helicla flute (4) on helicla flute (4) and outer core pipe (5) is continuous.
5. hard rock core drill according to claim 1,2 or 3, it is characterised in that: the first order blade (2) is in circumference
There are three direction is set at equal intervals.
6. hard rock core drill according to claim 1 or 2, it is characterised in that: second level blade (3) is in circumferencial direction etc.
It is equipped at intervals with three.
7. hard rock core drill according to claim 1 or 2, it is characterised in that: on drill bit (1) first order blade (2) and
Coolant circuit hole (6) are equipped at second level blade (3).
8. hard rock core drill according to claim 7, it is characterised in that: the coolant circuit at second level blade (3)
Hole (6) is strip-shaped hole, and the coolant circuit hole (6) at first order blade (2) is arcuate socket, and arcuate socket is opened on drill bit (1)
Front end face.
9. hard rock core drill according to claim 1 or 2, it is characterised in that: drill bit (1) inner wall is equipped with sealing ring (8).
10. hard rock core drill according to claim 1 or 2, it is characterised in that: drill bit (1) is PCD cutter.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810917788.0A CN108930517B (en) | 2018-08-13 | 2018-08-13 | Hard rock core drill |
| PCT/CN2018/108970 WO2020034349A1 (en) | 2018-08-13 | 2018-09-30 | Hard rock coring drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810917788.0A CN108930517B (en) | 2018-08-13 | 2018-08-13 | Hard rock core drill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108930517A true CN108930517A (en) | 2018-12-04 |
| CN108930517B CN108930517B (en) | 2024-03-22 |
Family
ID=64445319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810917788.0A Active CN108930517B (en) | 2018-08-13 | 2018-08-13 | Hard rock core drill |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108930517B (en) |
| WO (1) | WO2020034349A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973034A (en) * | 2018-12-26 | 2019-07-05 | 深圳大学 | Rock sample original position fidelity coring system |
| CN109973035A (en) * | 2018-12-26 | 2019-07-05 | 深圳大学 | Rock sample fidelity coring system |
| CN110714720A (en) * | 2019-11-04 | 2020-01-21 | 重庆地质矿产研究院 | Drilling device for shale gas exploitation survey |
| CN112112575A (en) * | 2020-09-17 | 2020-12-22 | 中煤科工集团西安研究院有限公司 | Garrulous soft coal seam airtight coring bit suitable for ground drilling |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973034A (en) * | 2018-12-26 | 2019-07-05 | 深圳大学 | Rock sample original position fidelity coring system |
| CN109973035A (en) * | 2018-12-26 | 2019-07-05 | 深圳大学 | Rock sample fidelity coring system |
| CN109973035B (en) * | 2018-12-26 | 2024-04-12 | 深圳大学 | Rock sample fidelity core taking system |
| CN109973034B (en) * | 2018-12-26 | 2024-04-19 | 深圳大学 | Rock sample in-situ fidelity coring system |
| CN110714720A (en) * | 2019-11-04 | 2020-01-21 | 重庆地质矿产研究院 | Drilling device for shale gas exploitation survey |
| CN110714720B (en) * | 2019-11-04 | 2020-11-24 | 重庆地质矿产研究院 | Drilling device for shale gas exploitation survey |
| CN112112575A (en) * | 2020-09-17 | 2020-12-22 | 中煤科工集团西安研究院有限公司 | Garrulous soft coal seam airtight coring bit suitable for ground drilling |
Also Published As
| Publication number | Publication date |
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| CN108930517B (en) | 2024-03-22 |
| WO2020034349A1 (en) | 2020-02-20 |
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