CN108166933A - Jet stream cold cracking formula hot dry rock down-hole hammer drilling - Google Patents
Jet stream cold cracking formula hot dry rock down-hole hammer drilling Download PDFInfo
- Publication number
- CN108166933A CN108166933A CN201810121429.4A CN201810121429A CN108166933A CN 108166933 A CN108166933 A CN 108166933A CN 201810121429 A CN201810121429 A CN 201810121429A CN 108166933 A CN108166933 A CN 108166933A
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- China
- Prior art keywords
- drilling fluid
- bit body
- hole
- hot dry
- dry 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.)
- Pending
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 100
- 239000011435 rock Substances 0.000 title claims abstract description 68
- 238000005336 cracking Methods 0.000 title claims abstract description 14
- 239000012530 fluid Substances 0.000 claims abstract description 65
- 230000001154 acute effect Effects 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 abstract description 8
- 210000000515 tooth Anatomy 0.000 description 34
- 239000007921 spray Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- -1 granodiorite Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011044 quartzite Substances 0.000 description 1
- 230000001172 regenerating effect Effects 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
- E21B10/60—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
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/602—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a rotary drag type bit with blades
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
Jet stream cold cracking formula hot dry rock down-hole hammer drilling belongs to hot dry rock probing drilling tool technical field, and including bit body, drilling fluid runner, button and drilling fluid spray-hole, the working face of the bit body includes middle planar portion and the rake positioned at middle planar portion periphery；The drilling fluid runner is arranged in the middle part of bit body, and axial arranged along bit body；The drilling fluid runner is arranged in the middle part of bit body, and axial arranged along bit body；The button includes bottom surface tooth and heel teeth, and bottom surface tooth is arranged on middle planar portion, and heel teeth is arranged on rake, and there are one drilling fluid spray-holes for setting between the adjacent heel teeth of each two；The drilling fluid spray-hole is communicated with drilling fluid runner, and the angle of the central axis of drilling fluid spray-hole and the central axis of bit body is at an acute angle.The drill bit of the present invention, can be before the heel teeth impact grinding high temperature hot dry rock of drill bit, and jet stream cooling is carried out to hot dry rock reduces hot dry rock rock mass strength, improves the drilling efficiency of hot dry rock.
Description
Technical field
The invention belongs to hot dry rocks to drill drilling tool technical field, more particularly to a kind of jet stream cold cracking formula hot dry rock down-the-hole hammer drill
Head.
Background technology
Geothermal energy is a kind of green low-carbon, recyclable regenerative resource, has large storage capacity, is distributed wide, wiper ring
The features such as protecting, is reliable and stable, is a kind of practicable and competitive clean energy resource.Compared with geothermal resource of hydrothermal type,
More geothermal energies, which are stored in the high heat rock mass that underground has no water or little water, forms xeothermic lithotype geothermal energy resources.
Drilling well is the key link of hot dry rock exploitation.At present, in hot dry rock development process, drilling cost accounts for totle drilling cost
70% or so.Excessively high drilling cost seriously constrains large-scale developing and utilizing for hot dry rock with longer drilling period.
Drilling cost remains high at present, has the reason of serious restriction to be broadly divided into two kinds hot dry rock exploitation：It is first, dry
Re Yan stratum are mostly the igneous rock and metamorphic rock formed under high temperature and pressure, such as granite, granodiorite, quartzite, basalt
Deng stratum abrasiveness is strong, drillability is poor, some rock stratum uniaxial compressive strengths are up to more than 240MPa.Second is that conventional rotary drilling
Method, detritus efficiency is low, and bit wear is fast.It is provided with DTH drilling technology to greatly improve hot dry rock hard-rock boring efficiency
It may.Hydraulic in-the-hole hammer is compared with pneumatic down-hole hammer, since it drives the Incoercibility of medium, in deep hole and superdeep holes
Adaptability is stronger under high confining pressure operating condition, and efficient, and low energy consumption, and application field is more extensive, and button bit is with diving
A kind of matching used drill bit of drift.It is to improve to do that pretreatment how is carried out to the igneous rock of high temperature and pressure and reduces its breakdown strength
Another effective ways of hot rock rate of penetration.
Invention content
The technical problems to be solved by the invention are：In order to solve existing hot dry rock development cycle length and difficulty of high cost
Topic, the present invention provide a kind of jet stream cold cracking formula hot dry rock down-hole hammer drilling, can be in the heel teeth impact grinding high temperature hot dry rock of drill bit
Before, jet stream cooling is carried out to hot dry rock reduces hot dry rock rock mass strength, improves the drilling efficiency of hot dry rock.
Jet stream cold cracking formula hot dry rock down-hole hammer drilling, it is characterised in that：Including bit body, drilling fluid runner, button and brill
Well liquid spray-hole, the working face of the bit body include middle planar portion and the rake positioned at middle planar portion periphery；It is described
Drilling fluid runner is arranged in the middle part of bit body, and axial arranged along bit body；The button includes bottom surface tooth and heel teeth, bottom surface tooth
It is arranged on middle planar portion, heel teeth is arranged on rake, and there are one drilling fluid sprays for setting between the adjacent heel teeth of each two
Perforation；The drilling fluid spray-hole is communicated with drilling fluid runner, the central axis of drilling fluid spray-hole and the central shaft of bit body
The angle of line is at an acute angle.
Further, it is additionally provided with chip-removal hole on the bit body.
Preferably, the maximum radial distance ratio of the diameter of the drilling fluid runner and entire bit body for 25%~
40%.
Preferably, the angle of the central axis of the central axis and bit body of the drilling fluid spray-hole is in 20 °~60 °.
Preferably, the drilling fluid spray-hole is rounded.
By above-mentioned designing scheme, the present invention can bring following advantageous effect：The hot dry rock down-hole hammer drilling of the present invention
It is dry that rapid cooling reduction can be carried out to hot dry rock with the drilling fluid of high speed ejection before heel teeth carries out impact failure to hot dry rock
The breakdown strength of hot rock simultaneously cracks, and improves the speed of hot dry rock drilling；Continue the drilling fluid sprayed at a high speed to carry by heel teeth
Landwaste after impact failure is flowed to bottom hole both sides, ensure that chip removal efficiency.On bit body of the present invention in drilling fluid spray-hole
The angle of the central axis of mandrel line and bit body is at an acute angle, ensures while high temperature hot dry rock in front of heel teeth is cooled down, subsequently
Drilling fluid can be followed to move to around the borehole wall by the broken landwaste of heel teeth, the angle of drilling fluid spray-hole be set both to play in this way
The effect of jet stream cooling, in turn ensures the normal discharge of landwaste.Drilling fluid sprays hole number according to side on bit body of the present invention
Number of teeth amount and set, ensure drilling fluid injection hole number it is enough, heel teeth impact before can in front of heel teeth hot dry rock carry out it is cold
But.Drilling fluid spray-hole is arranged between heel teeth on bit body of the present invention, while cooling effect is ensured, has reduced brill to the greatest extent
The quantity of well liquid spray-hole.
Description of the drawings
Specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings.
Fig. 1 is jet stream cold cracking formula hot dry rock down-hole hammer drilling embodiment drill bit sectional view of the present invention.
Fig. 2 is jet stream cold cracking formula hot dry rock down-hole hammer drilling example structure diagrammatic top view of the present invention.
It is respectively marked in figure as follows：1- bit bodys, 2- drilling fluids runner, 3- heel teeths, 4- drilling fluid spray-holes.
Specific embodiment
In order to illustrate more clearly of the present invention, the present invention is done further with reference to preferred embodiments and drawings
It is bright.It should be understood by those skilled in the art that.Specifically described content is illustrative and be not restrictive below, should not be with this
It limits the scope of the invention.
The operation principle of the present invention：Hot dry rock drilling well belongs to one kind of hard rock drilling well, in hard rock drilling well, the side of bit body 1
The rock of teeth portion position is most difficult to crush.Before bit body 1 is by 3 impact grinding hot dry rock of heel teeth, drilling fluid passes through drilling fluid runner 2
Into drilling fluid spray-hole 4 and be injected on the hot dry rock in the front of heel teeth 3, due to drilling fluid hot dry rock temperature relatively to be broken compared with
It is low, while flow velocity is very fast, and efficient heat transfer process occurs both when drilling fluid is contacted with hot dry rock, hot dry rock cools down rapidly
It can up to 100 DEG C or more.The hot dry rock of high temperature temperature difference caused by drastically cooling down forms tensile stress on surface and even produces at this time
Raw crackle.Since pit shaft direction is directed toward in the direction of drilling fluid injection, and after 3 detritus of heel teeth by impact grinding after the landwaste that is formed
With the drilling fluid that high speed sprays toward the movement of pit shaft direction finally as drilling fluid drains into ground.
As shown in Figure 1, the present embodiment provides a kind of jet stream cold cracking formula hot dry rock down-hole hammer drilling, including bit body 1, drilling well
Liquid stream road 2, button and drilling fluid spray-hole 4, the working face of the bit body 1 include middle planar portion and positioned at middle planar portion
The rake of periphery；The drilling fluid runner 2 is arranged on 1 middle part of bit body, and, drilling fluid runner 2 axial arranged along bit body 1
The maximum radial distance ratio of diameter and entire bit body 1 be 25%~40%, both ensured the strength and stiffness of bit body 1,
Ensure that drilling fluid is smooth again to flow at drilling fluid spray-hole 4；The button includes bottom surface tooth and heel teeth 3, during bottom surface tooth is arranged on
Between in planar portions, heel teeth 3 is arranged on rake, and there are one drilling fluid spray-holes 4 for setting between the adjacent heel teeth 3 of each two；
The quantity of drilling fluid spray-hole 4 changes with the variation of 3 quantity of heel teeth on bit body 1, ensures the number of drilling fluid spray-hole 4
It measures enough and the hot dry rock in 3 front of heel teeth can be fully cooled, for convenience of processing, 4 shape of drilling fluid spray-hole is circle,
Not only easy to process but also control drill bit holistic cost.Depending on the aperture of drilling fluid spray-hole 4 is by down-hole hammer working flow, with ensure from
The drilling well flow velocity that drilling fluid spray-hole 4 sprays is foundation in 10m/s or so；The drilling fluid spray-hole 4 and drilling fluid runner 2
It communicates, the angle of the central axis and the central axis of bit body 1 of drilling fluid spray-hole 4 is at an acute angle, right before 3 broken rock of heel teeth
High temperature hot dry rock carries out rapid cooling, and after 3 detritus of heel teeth carries landwaste to ground is finally expelled to around pit shaft, preferably
Drilling fluid spray-hole 4 central axis and bit body 1 central axis angle in 20 °~60 °, ensure the drilling well ejected
Liquid is ejected into 3 target broken rock region of heel teeth.
As shown in Fig. 2, the quantity and angle of drilling fluid spray-hole 4 are set according to the arrangement of heel teeth 3 on bit body 1, protect
Each drilling fluid spray-hole 4 is demonstrate,proved to be set between two heel teeths 3 around；The drilling fluid that drilling fluid spray-hole 4 sprays can be to boring
Head 1 front hot dry rock rock mass of body is cooled down, and can be carried broken landwaste again after 3 broken rock of heel teeth and be migrated near wellbore.
To sum up, hot dry rock down-hole hammer drilling of the invention can be before heel teeth 3 carries out impact failure to hot dry rock, at a high speed
The drilling fluid of ejection, which carries out hot dry rock rapid cooling, to be reduced the breakdown strength of hot dry rock and cracks, and improves hot dry rock drilling
Speed；Continue the drilling fluid sprayed at a high speed carrying to be flowed to bottom hole both sides by the landwaste after 3 impact failure of heel teeth, the row of ensure that
Consider efficiency to be worth doing.
Claims (5)
1. jet stream cold cracking formula hot dry rock down-hole hammer drilling, it is characterised in that：Including bit body (1), drilling fluid runner (2), button
And drilling fluid spray-hole (4), the working face of the bit body (1) include middle planar portion and inclining positioned at middle planar portion periphery
Inclined portion；The drilling fluid runner (2) is arranged in the middle part of bit body (1), and axial arranged along bit body (1)；The button includes
Bottom surface tooth and heel teeth (3), bottom surface tooth are arranged on middle planar portion, and heel teeth (3) is arranged on rake, the adjacent side of each two
There are one drilling fluid spray-holes (4) for setting between tooth (3)；The drilling fluid spray-hole (4) communicates with drilling fluid runner (2), bores
The central axis of well liquid spray-hole (4) and the angle of the central axis of bit body (1) are at an acute angle.
2. jet stream cold cracking formula hot dry rock down-hole hammer drilling according to claim 1, it is characterised in that：The bit body (1)
On be additionally provided with chip-removal hole.
3. jet stream cold cracking formula hot dry rock down-hole hammer drilling according to claim 1, it is characterised in that：The drilling fluid runner
(2) the maximum radial distance ratio of diameter and entire bit body (1) is 25%~40%.
4. jet stream cold cracking formula hot dry rock down-hole hammer drilling according to claim 1, it is characterised in that：The drilling fluid injection
The angle of the central axis in hole (4) and the central axis of bit body (1) is in 20 °~60 °.
5. jet stream cold cracking formula hot dry rock down-hole hammer drilling according to claim 1, it is characterised in that：The drilling fluid injection
Hole (4) is rounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810121429.4A CN108166933A (en) | 2018-02-07 | 2018-02-07 | Jet stream cold cracking formula hot dry rock down-hole hammer drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810121429.4A CN108166933A (en) | 2018-02-07 | 2018-02-07 | Jet stream cold cracking formula hot dry rock down-hole hammer drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108166933A true CN108166933A (en) | 2018-06-15 |
Family
ID=62513626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810121429.4A Pending CN108166933A (en) | 2018-02-07 | 2018-02-07 | Jet stream cold cracking formula hot dry rock down-hole hammer drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108166933A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625791A (en) * | 2018-06-19 | 2018-10-09 | 吉林大学 | The strong cold mould hot dry rock Pneumatic down-hole hammer bit of heel teeth |
| CN109252816A (en) * | 2018-11-19 | 2019-01-22 | 吉林大学 | Heel teeth two-beam wall-attached jet impacts compulsive-cooling hot dry rock down-hole hammer drilling |
| CN110318677A (en) * | 2019-08-06 | 2019-10-11 | 吉林大学 | Hot dry rock high energy hydraulic in-the-hole hammer sprays reaming hole device |
| CN112855025A (en) * | 2021-01-19 | 2021-05-28 | 西南石油大学 | High-efficient broken rock drilling acceleration system of auxiliary drill bit is split to heat |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201232524Y (en) * | 2008-08-05 | 2009-05-06 | 李保顺 | Novel down-the-hole drill |
| CN202431200U (en) * | 2012-01-17 | 2012-09-12 | 李保顺 | Symmetrical type down-the-hole drill bit |
| CN204252836U (en) * | 2014-10-14 | 2015-04-08 | 孙文武 | Liquid injecting type down-the-hold drill bit |
| CN204729007U (en) * | 2015-04-29 | 2015-10-28 | 长沙万钛工程机械有限公司 | A kind of eccentric deep hole drill |
| CN205577856U (en) * | 2016-04-26 | 2016-09-14 | 浙江普兰卡钎具有限公司 | Down --hole drill bit |
| CN106320988A (en) * | 2016-10-08 | 2017-01-11 | 郑州神利达钻采设备有限公司 | Down-the-hole drill bit with good continuous cooling and slagging effects |
| CN207960509U (en) * | 2018-02-07 | 2018-10-12 | 吉林大学 | Jet stream cold cracking formula hot dry rock down-hole hammer drilling |
-
2018
- 2018-02-07 CN CN201810121429.4A patent/CN108166933A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201232524Y (en) * | 2008-08-05 | 2009-05-06 | 李保顺 | Novel down-the-hole drill |
| CN202431200U (en) * | 2012-01-17 | 2012-09-12 | 李保顺 | Symmetrical type down-the-hole drill bit |
| CN204252836U (en) * | 2014-10-14 | 2015-04-08 | 孙文武 | Liquid injecting type down-the-hold drill bit |
| CN204729007U (en) * | 2015-04-29 | 2015-10-28 | 长沙万钛工程机械有限公司 | A kind of eccentric deep hole drill |
| CN205577856U (en) * | 2016-04-26 | 2016-09-14 | 浙江普兰卡钎具有限公司 | Down --hole drill bit |
| CN106320988A (en) * | 2016-10-08 | 2017-01-11 | 郑州神利达钻采设备有限公司 | Down-the-hole drill bit with good continuous cooling and slagging effects |
| CN207960509U (en) * | 2018-02-07 | 2018-10-12 | 吉林大学 | Jet stream cold cracking formula hot dry rock down-hole hammer drilling |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625791A (en) * | 2018-06-19 | 2018-10-09 | 吉林大学 | The strong cold mould hot dry rock Pneumatic down-hole hammer bit of heel teeth |
| CN109252816A (en) * | 2018-11-19 | 2019-01-22 | 吉林大学 | Heel teeth two-beam wall-attached jet impacts compulsive-cooling hot dry rock down-hole hammer drilling |
| CN109252816B (en) * | 2018-11-19 | 2023-08-15 | 吉林大学 | Edge tooth double-bundle wall-attached jet impact strong-cooling type dry-hot rock down-the-hole hammer drill bit |
| CN110318677A (en) * | 2019-08-06 | 2019-10-11 | 吉林大学 | Hot dry rock high energy hydraulic in-the-hole hammer sprays reaming hole device |
| CN110318677B (en) * | 2019-08-06 | 2023-12-19 | 吉林大学 | Dry-hot rock high-energy hydraulic down-the-hole hammer jet reaming device |
| CN112855025A (en) * | 2021-01-19 | 2021-05-28 | 西南石油大学 | High-efficient broken rock drilling acceleration system of auxiliary drill bit is split to heat |
| CN112855025B (en) * | 2021-01-19 | 2022-03-25 | 西南石油大学 | High-efficient broken rock drilling acceleration system of auxiliary drill bit is split to heat |
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