CN110469269A - A kind of millimeter wave drill bit and millimeter wave drilling equipment - Google Patents
A kind of millimeter wave drill bit and millimeter wave drilling equipment Download PDFInfo
- Publication number
- CN110469269A CN110469269A CN201810443373.4A CN201810443373A CN110469269A CN 110469269 A CN110469269 A CN 110469269A CN 201810443373 A CN201810443373 A CN 201810443373A CN 110469269 A CN110469269 A CN 110469269A
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- China
- Prior art keywords
- millimeter wave
- drill bit
- waveguide pipe
- extrusion head
- bit according
- Prior art date
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
Abstract
The invention discloses a kind of millimeter wave drill bit and millimeter wave drilling equipments, are related to drilling equipment technical field, to solve the problems, such as that millimeter wave drill bit is easy blocking and invents in the prior art.A kind of millimeter wave drill bit of the present invention, including waveguide pipe and compression assemblies, the compression assemblies include the extrusion head for being set in the lower end of the waveguide pipe, and the region opposite with the lower end of the waveguide pipe is equipped with aperture on the extrusion head, and the diameter of the extrusion head gradually decreasees from top to bottom.
Description
Technical field
The present invention relates to drilling equipment technical field more particularly to a kind of millimeter wave drill bits and millimeter wave drilling equipment.
Background technique
Dry-hot-rock geothermal can be that a kind of energy is big, the widespread energy, usual buried thousands of rice.In order to obtaining hot dry rock
Thermal energy needs to develop 3000 meters of deep layer drilling technologies below.
Oriented energy millimeter wave drilling technology can overcome the technical restriction of depth or High Temperature Rotating drilling well, existing directional energy
Measuring millimeter wave drilling well includes millimeter wave generator and hollow waveguide pipe, and by waveguide pipe vacantly right above rock stratum, waveguide pipe will
Millimeter wave generator generate millimeter wave conducting electromagnetic energy to rock stratum on, millimeter wave electromagnetic energy intense beam melt, evaporation rock and into
Row drilling.When temperature is 1000 DEG C~3500 DEG C of range, the most of components of rock can be melted and gasify, but part
Substance is only melted, and when the aggregation of a large amount of fusant, the lower end of waveguide pipe is easy to be blocked, and cannot continue to move down.If increasing milli
The power of metric wave generator solves blockage problem, not only increases operating cost, and cause bad shadow to the stability of whole system
It rings, seriously results even in that drilling is obstructed or project is forced to stop.
Summary of the invention
The embodiment of the present invention provides a kind of millimeter wave drill bit and millimeter wave drilling equipment, can solve prior art millimeter wave
Drill bit is easy the problem of blocking.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that
A kind of millimeter wave drill bit, including waveguide pipe and compression assemblies, the compression assemblies include being set in the waveguide pipe
Lower end extrusion head, the region opposite with the lower end of the waveguide pipe is equipped with aperture on the extrusion head, the extrusion head
Diameter gradually decreasees from top to bottom.
Further, the compression assemblies further include the casing for being set in the upper end of the waveguide pipe, described sleeve pipe and institute
State extrusion head connection.
Further, the waveguide pipe is hollow structure, and described sleeve pipe and the junction of the extrusion head are equipped with opening, institute
It states and forms annular gap between the inner wall of extrusion head and the outer wall of the waveguide pipe, the annular gap and the open communication.
Further, the compression assemblies further include multiple connecting columns, under one end and described sleeve pipe of the connecting column
End connection, the other end are connect with the upper end of the extrusion head.
Further, multiple ventholes are offered in the waveguide pipe, the opening is connected to the venthole.
Further, the venthole opening direction tilts upward.
Further, the lower end of the extrusion head and the lower end tool of the waveguide pipe are at regular intervals.
Further, the extrusion head includes cylindrical section and the inverted round stage section connecting with the cylindrical section, the cylinder
Section is set in the lower end of the waveguide pipe, and the inverted round stage section is located at the lower section of the waveguide pipe.
Further, the value range of the diameter ratio of the diameter of the waveguide pipe and the cylindrical section is 1:1.1~1:
10。
Further, the value range of the diameter ratio of the diameter of the waveguide pipe and the cylindrical section is 1:1.5~1:
5。
Further, the value range of the lower end diameter of the inverted round stage section and the ratio between upper end diameter is 1:1.1~1:15.
Further, the value range of the lower end diameter of the inverted round stage section and the ratio between upper end diameter is 1:2~1:5.
Further, the value model of the diameter ratio of the lower end diameter and waveguide pipe of the inverted round stage section of the extrusion head
It encloses for 1:1~1:10.
Further, the annular gap between the inner wall of the extrusion head and the outer wall of the waveguide pipe is 5mm or more.
Further, the quantity of the venthole is 3 or more.
The embodiment of the invention also includes a kind of millimeter wave drilling equipments, bore including millimeter wave described in above-mentioned technical proposal
Head.
Millimeter wave drill bit and millimeter wave drilling equipment provided in an embodiment of the present invention, the millimeter wave drill bit include waveguide pipe and
Compression assemblies, compression assemblies include the extrusion head for being set in waveguide pipe lower end, the area opposite with the lower end of waveguide pipe on extrusion head
Domain is equipped with aperture, and waveguide pipe can conduct Millimeter Wave via aperture to rock stratum, because the diameter of extrusion head gradually decreasees from top to bottom,
I.e. extrusion head is up big and down small, and when forming fusant after the heating of rock stratum, the outer wall of extrusion head is contacted with the fusant, with extruding
It moves upside down, so that fusant is gradually extruded on the borehole wall along the outer wall of extrusion head, so that fusant be avoided to block guided wave
It manages and influences drilling progress and cost is relatively low.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is one of the structural schematic diagram of millimeter wave of embodiment of the present invention drill bit；
Fig. 2 is the second structural representation of millimeter wave of embodiment of the present invention drill bit；
Fig. 3 is the schematic cross-section of millimeter wave of embodiment of the present invention drill bit.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " center ", "upper", "lower", "front", "rear", " left side ",
The orientation or positional relationship of the instructions such as " right side ", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on the figure
Orientation or positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
Referring to Fig.1~3, millimeter wave of embodiment of the present invention drill bit includes waveguide pipe 1 and compression assemblies 2, and compression assemblies 2 include
Extrusion head 21, extrusion head 21 are set in the lower end of waveguide pipe 1, and the region opposite with the lower end of waveguide pipe 1 is equipped on extrusion head 21
The diameter of aperture 2101, extrusion head 21 gradually decreasees from top to bottom.
Millimeter wave drill bit provided in an embodiment of the present invention, the millimeter wave drill bit include waveguide pipe 1 and compression assemblies 2, are squeezed
Component 2 includes being set in the extrusion head 21 of 1 lower end of waveguide pipe, and the region opposite with the lower end of waveguide pipe 1 is equipped on extrusion head 21
Aperture 2101, waveguide pipe 1 can conduct Millimeter Wave via aperture 2101 on rock stratum, because extrusion head 21 diameter from top to bottom gradually
Reduce, i.e., extrusion head 21 is up big and down small, and when forming fusant after the heating of rock stratum, the outer wall of extrusion head 21 connects with the fusant
Touching, and as extrusion head 21 moves downward, so that fusant is gradually extruded on the borehole wall along the outer wall of extrusion head 21, thus
It avoids fusant blocking waveguide pipe 1 and influences drilling progress and cost is relatively low.
Further, compression assemblies 2 further include casing 22, and casing 22 is set in 1 upper end of waveguide pipe, and casing 22 and extruding
First 21 connection, is further squeezed fusant to the borehole wall by casing 22.
Optionally, above-mentioned waveguide pipe 1 is hollow structure, and casing 22 and the junction of extrusion head 21 are equipped with opening 201, squeeze
Annular gap 202 is formed between the inner wall of pressure head 21 and the outer wall of waveguide pipe 1, which is connected to opening 201, such as
Shown in Fig. 3, inert gas (such as nitrogen) can be imported into shaft bottom by waveguide pipe 1, prevent from generating oxidation reaction in melting process, and
And inert gas reverse flow after shaft bottom is blocked, enter between the borehole wall and casing 22 through annular gap 202, opening 201
Gap, nitrogen can take away the heat of the borehole wall in reverse flow process, and the fusant on the borehole wall is made to be quickly cooled down hardening.
Optionally, there are many connection types of casing 22 and extrusion head 21, such as pass through lock connection or compression assemblies 2
It further include multiple connecting columns 23, one end of connecting column 23 is connect with the lower end of casing 22, and the upper end of the other end and extrusion head 21 connects
It connects, as shown in Figure 2.
Referring to Fig. 2, multiple connecting columns 23 are provided at circumferentially spaced along casing 22 or extrusion head 21, pass through two neighboring connection
The gap of column 23 forms above-mentioned opening 201, and the attachment force in 21 circumferential direction of casing 22 or extrusion head is uniformly, reliably.
Based on the above embodiment, multiple ventholes 11, venthole are offered in some embodiments of the present invention in waveguide pipe 1
11 are connected to above-mentioned opening 201, and nitrogen can be blown out from multiple ventholes 11, further cool down to the fusant of the borehole wall,
Improve hardening by cooling speed.
Optionally, the opening direction of venthole 11 can be along the radial direction of waveguide pipe 1, the i.e. opening direction and guided wave of venthole 11
The tube wall of pipe 1 is vertical or the inclination of the opening direction of venthole 11 downward or the opening direction of venthole 11 tilts court
On.The opening direction of venthole 11 tilts upward in one embodiment of the present of invention, in the inert gas that 1 end of waveguide pipe sprays
After hitting shaft bottom, back towards upper flowing, it is mixed that the inert gas and venthole 11 flowed up tilts the inert gas blown out upward
It is accelerated to flow upward after conjunction, so that mixed gas quickly takes away the heat of the borehole wall, accelerate the cooling rate of the borehole wall.
Further, in order to avoid the lower temperature of waveguide pipe 1 is excessively high, the lower end of extrusion head 21 in the embodiment of the present invention
At regular intervals with the lower end tool of waveguide pipe 1, the lower end of waveguide pipe 1 farther out, makes far from the hot melt forward position formed after the heating of rock stratum
The head temperature for obtaining waveguide pipe 1 is lower, extends the service life of waveguide pipe 1.
Optionally, extrusion head 21 includes cylindrical section 211 and inverted round stage section 212, lower end and the inverted round stage section of cylindrical section 211
212 upper end connection, cylindrical section 211 are set in the lower end of waveguide pipe 1, and inverted round stage section 212 is located at the lower section of waveguide pipe 1, rounding
The millimeter wave that platform section 212 can be such that waveguide pipe 1 conducts relatively is concentrated, and accelerates the vaporization of rock stratum, and the surface of inverted round stage section 212 is not dashed forward
Out, it is not easy to wear in drilling process, service life is longer.
If the diameter P of waveguide pipe 1 and the value of the ratio between the diameter D of cylindrical section 211 are larger, i.e. the diameter D of cylindrical section 211 compared with
Greatly, waveguide pipe 1 takes a long time, and could melt or the rock stratum for the larger area that gasifies, so that drilling well takes a long time；If guided wave
The diameter P of pipe 1 and the value of the ratio between the diameter D of cylindrical section 211 are smaller, i.e., the annular gap between cylindrical section 211 and waveguide pipe 1
202 is smaller, influences the flow that inert gas flows upward.Therefore, the diameter P and circle of one embodiment of the present of invention waveguide pipe 1
The value range of the ratio between the diameter D of shell of column 211 is 1:1.1~1:10.
Further, the ratio between diameter D of diameter P Yu cylindrical section 211 of waveguide pipe 1 in another embodiment of the invention
Value range is 1:1.5~1:5.
In addition, if the lower end diameter d of inverted round stage section 212 cannot be too small, the diameter of aperture 2101, the effect rock of millimeter wave
The range of layer is too small, influences bit speed；If the diameter (i.e. the diameter of aperture 2101) of the lower end d of inverted round stage section 212 cannot mistake
Greatly, the range of the effect rock stratum of millimeter wave is excessive, and extrusion head 21 is bad to the squeezing effect of fusant.Therefore, of the invention one
(upper end diameter of inverted round stage section 212 is equal to cylindrical section 211 for the lower end diameter d of inverted round stage section 212 and upper end diameter in a embodiment
Diameter D) the ratio between value range be 1:1.1~1:15.
Similarly, it is preferable that the ratio between the lower end diameter d of inverted round stage section 212 and upper end diameter in another embodiment of the present invention
Value range be 1:2~1:5.
Correspondingly, if the ratio between the lower end diameter d of the inverted round stage section 212 of extrusion head 21 and the diameter P of waveguide pipe 1 are too small, i.e.,
Gap between extrusion head 21 and waveguide pipe 1 is too small, influences the cooling rate of the borehole wall；If the inverted round stage section 212 of extrusion head 21
The ratio between lower end diameter d and the diameter P of waveguide pipe 1 are excessive, i.e., the gap between extrusion head 21 and waveguide pipe 1 is excessive, influence drilling well
Depth.Therefore, in the embodiment of the present invention lower end diameter d of the inverted round stage section 212 of extrusion head 21 and waveguide pipe 1 the ratio between diameter P
Value range be 1:1~1:10.
Similarly, if the annular gap 202 between the inner wall of extrusion head 21 and the outer wall of waveguide pipe 1 is too small, inert gas is anti-
Flow to flowing is smaller；If the annular gap 202 between the inner wall of extrusion head 21 and the outer wall of waveguide pipe 1 is excessive, that is, squeeze
First 21 volume is larger, needs to bore larger-diameter well, reduces bit speed.Therefore, extrusion head 21 in the embodiment of the present invention
Annular gap 202 between inner wall and the outer wall of waveguide pipe 1 is 5mm or more.
In addition, the quantity of above-mentioned venthole 11 cannot be very few, gas output is smaller, little on accelerating borehole wall cooling to influence.
Therefore, in the embodiment of the present invention venthole 11 quantity be 3 or more, and the value range in the aperture of venthole 11 be 1mm~
100mm。
The embodiment of the invention also discloses a kind of millimeter wave drilling equipments, including above-mentioned all millimeter wave drill bits.Due to
The millimeter wave drill bit installed in the millimeter wave drilling equipment of the present embodiment and the millimeter wave provided in above-mentioned each embodiment bore
It is identical, therefore the two is able to solve identical technical problem, and reaches identical desired effect.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (16)
1. a kind of millimeter wave drill bit, which is characterized in that including waveguide pipe and compression assemblies, the compression assemblies include being set in institute
State the extrusion head of the lower end of waveguide pipe, the region opposite with the lower end of the waveguide pipe is equipped with aperture on the extrusion head, described
The diameter of extrusion head gradually decreasees from top to bottom.
2. millimeter wave drill bit according to claim 1, which is characterized in that the compression assemblies further include being set in described lead
The casing of the upper end of wave duct, described sleeve pipe are connect with the extrusion head.
3. millimeter wave drill bit according to claim 2, which is characterized in that the waveguide pipe is hollow structure, described sleeve pipe
It is equipped with opening with the junction of the extrusion head, is formed between annular between the inner wall of the extrusion head and the outer wall of the waveguide pipe
Gap, the annular gap and the open communication.
4. millimeter wave drill bit according to claim 2 or 3, which is characterized in that the compression assemblies further include multiple connections
Column, one end of the connecting column and the lower end of described sleeve pipe connect, and the other end is connect with the upper end of the extrusion head.
5. millimeter wave drill bit according to claim 3, which is characterized in that multiple ventholes are offered in the waveguide pipe,
The opening is connected to the venthole.
6. millimeter wave drill bit according to claim 5, which is characterized in that the opening direction of the venthole tilts upward.
7. millimeter wave drill bit according to claim 1, which is characterized in that the lower end of the extrusion head and the waveguide pipe
Lower end tool is at regular intervals.
8. millimeter wave drill bit according to claim 1, which is characterized in that the extrusion head include cylindrical section and with institute
The inverted round stage section of cylindrical section connection is stated, the cylindrical section is set in the lower end of the waveguide pipe, and the inverted round stage section is located at described
The lower section of waveguide pipe.
9. millimeter wave drill bit according to claim 8, which is characterized in that the diameter of the waveguide pipe and the cylindrical section
The value range of diameter ratio is 1:1.1~1:10.
10. millimeter wave drill bit according to claim 9, which is characterized in that the diameter of the waveguide pipe and the cylindrical section
Diameter ratio value range be 1:1.5~1:5.
11. millimeter wave drill bit according to claim 8, which is characterized in that the lower end diameter of the inverted round stage section and upper end
The value range of diameter ratio is 1:1.1~1:15.
12. millimeter wave drill bit according to claim 11, which is characterized in that the lower end diameter of the inverted round stage section and upper end
The value range of diameter ratio is 1:2~1:5.
13. millimeter wave drill bit according to claim 8, which is characterized in that the lower end of the inverted round stage section of the extrusion head is straight
The value range of diameter and the diameter ratio of the waveguide pipe is 1:1~1:10.
14. millimeter wave drill bit according to claim 3, which is characterized in that the inner wall of the extrusion head and the waveguide pipe
Outer wall between annular gap be 5mm or more.
15. millimeter wave drill bit according to claim 5, which is characterized in that the quantity of the venthole is 3 or more.
16. a kind of millimeter wave drilling equipment, which is characterized in that including millimeter described in any one of the claims 1~15
Wave drill bit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810443373.4A CN110469269B (en) | 2018-05-10 | 2018-05-10 | Millimeter wave drill bit and millimeter wave drilling equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810443373.4A CN110469269B (en) | 2018-05-10 | 2018-05-10 | Millimeter wave drill bit and millimeter wave drilling equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110469269A true CN110469269A (en) | 2019-11-19 |
| CN110469269B CN110469269B (en) | 2021-06-22 |
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ID=68504050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810443373.4A Active CN110469269B (en) | 2018-05-10 | 2018-05-10 | Millimeter wave drill bit and millimeter wave drilling equipment |
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| CN (1) | CN110469269B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101382043A (en) * | 2007-09-07 | 2009-03-11 | 中国石化集团胜利石油管理局钻井工艺研究院 | Combined drill for drilling with casing |
| US20100252324A1 (en) * | 2007-12-20 | 2010-10-07 | Massachusetts Institute Of Technology | Millimeter-wave drilling and fracturing system |
| CN102177306A (en) * | 2008-08-28 | 2011-09-07 | 贝克休斯公司 | Drilling out casing bits with other casing bits |
| CN203334954U (en) * | 2013-07-19 | 2013-12-11 | 东北石油大学 | Drilling device with laser drill bit |
| CN204804691U (en) * | 2015-03-05 | 2015-11-25 | 北京加华维尔能源技术有限公司 | Drilling rig is assisted to millimeter wave |
| CN107989546A (en) * | 2017-12-28 | 2018-05-04 | 武汉市陆刻科技有限公司 | A kind of oil-well drilling equipment based on microwave rock fragmenting |
-
2018
- 2018-05-10 CN CN201810443373.4A patent/CN110469269B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101382043A (en) * | 2007-09-07 | 2009-03-11 | 中国石化集团胜利石油管理局钻井工艺研究院 | Combined drill for drilling with casing |
| US20100252324A1 (en) * | 2007-12-20 | 2010-10-07 | Massachusetts Institute Of Technology | Millimeter-wave drilling and fracturing system |
| CN102177306A (en) * | 2008-08-28 | 2011-09-07 | 贝克休斯公司 | Drilling out casing bits with other casing bits |
| CN203334954U (en) * | 2013-07-19 | 2013-12-11 | 东北石油大学 | Drilling device with laser drill bit |
| CN204804691U (en) * | 2015-03-05 | 2015-11-25 | 北京加华维尔能源技术有限公司 | Drilling rig is assisted to millimeter wave |
| CN107989546A (en) * | 2017-12-28 | 2018-05-04 | 武汉市陆刻科技有限公司 | A kind of oil-well drilling equipment based on microwave rock fragmenting |
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| Publication number | Publication date |
|---|---|
| CN110469269B (en) | 2021-06-22 |
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