CN104653107B - Utilize the auxiliary detritus device and method of liquid cavitation effect - Google Patents
Utilize the auxiliary detritus device and method of liquid cavitation effect Download PDFInfo
- Publication number
- CN104653107B CN104653107B CN201510078522.8A CN201510078522A CN104653107B CN 104653107 B CN104653107 B CN 104653107B CN 201510078522 A CN201510078522 A CN 201510078522A CN 104653107 B CN104653107 B CN 104653107B
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- langevin
- drilling rod
- cable
- supporting plate
- type transducer
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- 230000000694 effects Effects 0.000 title claims abstract description 32
- 239000007788 liquid Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000005553 drilling Methods 0.000 claims abstract description 62
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000011435 rock Substances 0.000 claims description 18
- 239000000919 ceramic Substances 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 238000002604 ultrasonography Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 241001074085 Scophthalmus aquosus Species 0.000 claims 2
- 208000031481 Pathologic Constriction Diseases 0.000 claims 1
- 210000001215 vagina Anatomy 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000035515 penetration Effects 0.000 abstract description 2
- 239000002245 particle Substances 0.000 description 4
- 241000233855 Orchidaceae Species 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000009527 percussion Methods 0.000 description 2
- 230000010363 phase shift Effects 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000002730 additional effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/24—Drilling using vibrating or oscillating means, e.g. out-of-balance masses
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of auxiliary detritus apparatus and method utilizing liquid cavitation effect, by driving power supply, vibrational system and drive system three part to form, vibrational system includes Langevin-type transducer, lower bit body, upper bit body, water proof groove and cutting tooth；Drive system includes supporting plate, drilling rod water joint, cable and drill bit water joint；The upper surface of described lower bit body is arranged symmetrically with six Langevin-type transducers, water proof groove seal closure is located on Langevin-type transducer, cable in drilling rod is linked together by drilling rod the first water joint, and the cable in drill bit is linked together by the electric wire of the second drill bit water joint with Langevin-type transducer；Drive power supply to electrically connect with cable, drive power supply to be powered to Langevin-type transducer by cable, drive it to be operated.Vibrational system is not only positioned over the bottom of bit body by the present invention, improves vibration transmission efficiency, and supersonic vibration detritus is cavitation effect is broken, tired broken and drilling tool revolution three's unification, improves penetration rate, improves drilling efficiency.
Description
Technical field
The present invention relates to a kind of cavitation effect addi-tional crusher rock utilizing supersonic vibration to produce, improve detritus
Speed, and promote the drilling technology returned on landwaste, this technology be mainly used in oil drilling, geological drilling,
The fields such as hydrological well, engineering construction, vertical shaft for mine, tunnel excavation construction.Specifically one piezoelectricity
Ceramic-type ultrasonic activation auxiliary device and using method thereof.
Background technology
Micro-gas core cavitation bubble in liquid vibrates under the effect of sound wave, occurs when acoustic pressure reaches certain value
Growth and the dynamic process of collapse be ultrasonic cavitation phenomenon.Ultrasound wave can cause particle vibration,
Square being directly proportional of the acceleration of particle vibration and supersonic frequency.Tens KHz ultrasonic at normal temperature
With the liquid of pressure can produce instantaneous high temperature (higher than 5000K) and high pressure (50GPa), add liquid
The oxygen of the oligodynamical chemical attack effect to rock in body, produces extremely strong cavitation effect to rock.One
Aspect destroys the absorption affinity between rock particles, on the other hand also can cause mantle of rock destruction and come off.
Bubble " can also pierce " in crack to do and vibrate, and accelerates the broken of rock.This destruction to rock
It is referred to as cavitation effect.
Cavitation bubble can make liquid itself produce circulation, i.e. so-called acoustic streaming in vibration processes.It can make to shake
There is the highest velocity gradient and viscous stress in dynamic bubble surface, promotes the destruction of rock and mantle of rock
Coming off, ultrasonic cavitation produced high-speed micro-jet on solid and liquid surface can remove or weaken limit
Rock stratum, boundary, corrodes rock layer surface, increases stirring action, accelerates the stripping speed of rock layer surface and rock stratum body
Degree.Additionally, supersonic vibration causes the vibration velocity and acceleration that particle is the biggest, rock dust, landwaste is made to be subject to
Frequently and the impact of fierceness is difficult to be attached to surface of drill stem, well solve the mud drum problem of drilling tool.
The material of drill bit uses the titanium alloy or chromium steel that toughness is high, stability is high, and drill body can be made not to be subject to
The impact of cavitation effect.
Being of wide application of ultrasonic cavitation effect, relates to ultrasonic cleaning, ores chemicaltreatment, extraction
Take and separate, synthesize and the fields such as degraded.
Summary of the invention
It is an object of the invention to provide a kind of auxiliary detritus device utilizing liquid cavitation effect, this device profit
The cavitation effect produced with ultrasound wave dither and liquid accelerates the broken of rock, improves drilling efficiency.
It is a further object to provide a kind of auxiliary detritus method utilizing liquid cavitation effect.
The auxiliary detritus device utilizing liquid cavitation effect of the present invention be by drive power supply, vibrational system and
Drive system three part form, vibrational system include Langevin-type transducer, lower bit body, upper bit body,
Water proof groove and cutting tooth；Drive system includes supporting plate, the first drilling rod water joint, cable and second and bores
Head water joint；
The upper surface of described lower bit body is arranged symmetrically with multiple Langevin-type transducer, is shaken by Lan Jiewen by screw
Sub and lower bit body couples together, and each two line is by the Langevin-type transducer in the lower bit body upper surface center of circle
It is one group, drives power supply that single group Langevin-type transducer can be driven to work alone, also can organize used in parallel more.Often
The driving carrier phase shift 90 ° of group Langevin-type transducer.For the stratum of different hardness, select to drive blue outstanding person
The group number of literary composition oscillator.
The mode that lower bit body and upper bit body are threaded connection links together.
Water proof groove is toroidal cavity, and water proof groove seal closure is located on Langevin-type transducer, concrete mounting structure
That water proof groove is connected on the upper surface of lower bit body with fixing screw by ring flange, water proof groove with under
It is placed with seal washer between the upper surface of bit body, prevents from leaking, the Langevin-type transducer position that water proof groove is corresponding
The inner surface put has through hole, and installs mechanical sealing member, and for electric wire arrangement, through hole is positioned at water proof groove
The position, by-level face of inner surface.On the one hand Langevin-type transducer and liquid can be separated anti-leak-stopping by water proof groove
Electricity, is on the other hand also prevented from liquid and the impurity percussion to Langevin-type transducer, and then protection orchid
Outstanding literary composition oscillator.
Often saving and be equipped with the second supporting plate near the external screw thread of drilling rod, the second supporting plate is positioned at drilling rod inside and screw thread
Lower end, the second supporting plate for support the first drilling rod water joint, under the inside of upper bit body and external screw thread
Being provided with the first supporting plate at end, the first supporting plate is for supporting the second drill bit water joint.
Being respectively provided with annulus in the middle of second supporting plate and the first supporting plate, cable passes this annulus, the first supports drill rods
Water joint is enclosed within outside cable and is positioned on the second supporting plate, and the second drill bit water joint is enclosed within outside cable and position
On the first supporting plate.
Langevin-type transducer is made up of upper end cover, piezoelectric ceramic piece, copper sheet, bottom end cover and prestressing force screw,
Together with upper end cover, piezoelectric ceramic piece are sequentially fixed at by prestressing force screw with bottom end cover, upper end cover and piezoelectricity
Equal sandwiched copper sheet between potsherd and between piezoelectric ceramic piece and bottom end cover.
Described upper end cover uses stainless steel material, and bottom end cover uses aluminum alloy materials, and bottom end cover is loudspeaker
Shape or cylinder.
Cable in drilling rod is linked together by drilling rod the first water joint, and the cable in drill bit is by the
Two drill bit water joints link together with the electric wire of Langevin-type transducer.
Drive power supply to electrically connect with cable, drive power supply to be powered to Langevin-type transducer by cable, drive it
It is operated.Lower bit body has cutting tooth.
A kind of auxiliary detritus method utilizing liquid cavitation effect of the present invention, the method comprises the following steps:
A, connect bit body and lower bit body, by the second drill bit water joint in upper bit body and
One supporting plate is fixed.
When b, jointed rod, first the first drilling rod water joint of cable is connected, reconnect drilling rod.
C, driving power supply connect electricity, drive Langevin-type transducer work.
D, select to drive one to two group Langevin-type transducer work, for harder or intricately for relatively soft formation
Layer drives three groups of Langevin-type transducers to work together.
E, when unloading drilling rod, drive power supply to be adjusted to closed mode, first drilling rod is turned on, then the first drilling rod is prevented
Water swivel is turned on, and unloads drilling rod afterwards and is positioned over assigned position.
F, mud are transported to drill bit by the central passage of drilling rod, connect and drive power supply, and Lan Jiewen shakes
Son is started working, and in conjunction with the rotary drilling of drilling tool self, adds the sky utilizing ultrasound wave to make liquid produce
Change effect and the dither tired crushing effect to rock, play the effect efficiently crept into.
Beneficial effects of the present invention:
1, vibrational system is not only positioned over the bottom of bit body by the present invention, improves vibration transmission efficiency,
And supersonic vibration detritus is cavitation effect is broken, tired broken and drilling tool revolution three's unification, very great Cheng
That spends improves penetration rate, improves drilling efficiency.
2, the mud drum problem of drilling tool is solved.
3, improve mud to take and cut the ability returned.
Accompanying drawing explanation
Fig. 1 is the detritus device sectional view of the present invention.
Fig. 2 is the sectional view of Langevin-type transducer.
Fig. 3 is the top view of drilling rod.
Bit body under 1-；2-the first supporting plate；3-water proof groove；The upper bit body of 4-；5-drilling rod；6-the second supporting plate；
7-the first drilling rod water joint；8-seal washer；9-Langevin-type transducer；10-mechanical sealing member；11-cable；
12-drives power supply；13-the second drill bit water joint；14-cuts tooth；15-fixes screw；16-upper end cover；
17-piezoelectric ceramic piece；18-copper sheet；19-bottom end cover；20-prestressing force screw；21-screw.
Detailed description of the invention
The auxiliary detritus device utilizing liquid cavitation effect of the present invention is by driving power supply 12, vibrational system
Forming with drive system three part, vibrational system includes Langevin-type transducer 9, lower bit body 1, upper drill bit
Body 4, water proof groove 3 and cutting tooth 14；Drive system include supporting plate the 6, first drilling rod water joint 7,
Cable 11 and the second drill bit water joint 13；
The upper surface of described lower bit body 1 is arranged symmetrically with multiple Langevin-type transducer 9, by screw 21 by orchid
Outstanding literary composition oscillator 9 and lower bit body 1 couple together, and each two line is by the lower bit body 1 upper surface center of circle
Langevin-type transducer 9 be one group, drive power supply 12 that single group Langevin-type transducer 9 can be driven to work alone, also
Can organize used in parallel more.Often organize the driving carrier phase shift 90 ° of Langevin-type transducer 9.For different hardness
Stratum, select drive Langevin-type transducer 9 group number.
The mode that lower bit body 1 and upper bit body 4 are threaded connection links together.
Water proof groove 3 is toroidal cavity, and water proof groove 3 seal closure is located on Langevin-type transducer 9, specifically pacifies
Assembling structure is, water proof groove 3 is connected on the upper surface of lower bit body 1 with fixing screw 15 by ring flange,
Being placed with seal washer 8 between the upper surface of water proof groove 3 and lower bit body 1, prevent from leaking, water proof groove 3 is right
The inner surface of Langevin-type transducer 9 position answered has through hole, and installs mechanical sealing member 10, is used for arranging
Electric wire, through hole is positioned at the position, by-level face of water proof groove 3 inner surface.Water proof groove 3 one aspect can be by orchid
Outstanding literary composition oscillator 9 separates with liquid and prevents electric leakage, is on the other hand also prevented from liquid and impurity to Lan Jiewen
The percussion of oscillator 9, and then protection Langevin-type transducer 9.
Often being equipped with the second supporting plate 6 near the external screw thread of joint drilling rod 5, it is internal that the second supporting plate 6 is positioned at drilling rod 5
With the lower end of screw thread, the second supporting plate 6 is for supporting the first drilling rod water joint 7, the inside of upper bit body 4
Being provided with the first supporting plate 2 with external screw thread lower end, the first supporting plate 2 is for supporting the second drill bit water joint 13.
Be respectively provided with annulus in the middle of second supporting plate 6 and the first supporting plate 2, cable 11 through this annulus, first
Support drilling rod water joint 7 is enclosed within outside cable 11 and is positioned on the second supporting plate 6, the second drill bit water joint 13
It is enclosed within outside cable 11 and is positioned on the first supporting plate 2.
Langevin-type transducer 9 is by upper end cover 16, piezoelectric ceramic piece 17, copper sheet 18, bottom end cover 19 and pre-
Stress screw 20 forms, and prestressing force screw 20 is by upper end cover 16, piezoelectric ceramic piece 17 and bottom end cover 19
It is sequentially fixed at together, between upper end cover 16 and piezoelectric ceramic piece 17 and piezoelectric ceramic piece 17 and lower end
Equal sandwiched copper sheet 18 between lid 19.
Described upper end cover 16 uses stainless steel material, bottom end cover 19 to use aluminum alloy materials, bottom end cover
19 is tubaeform or cylindrical.
Cable 11 in drilling rod 5 is linked together by drilling rod the first water joint 7, the cable in drill bit
11 are linked together by the electric wire of the second drill bit water joint 13 with Langevin-type transducer 9.
Drive power supply 12 to electrically connect with cable 11, drive power supply 12 by cable 11 to Langevin-type transducer 9
Power supply, drives it to be operated.Lower bit body 1 has cutting tooth 14.
A kind of auxiliary detritus method utilizing liquid cavitation effect of the present invention, the method comprises the following steps:
A, connect bit body 4 and lower bit body 1, connect waterproof for the second drill bit in upper bit body 4
13 and first supporting plate 2 fix.
When b, jointed rod 5, first the first drilling rod water joint 7 of cable 11 is connected, reconnect
Drilling rod 5.
C, driving power supply 12 connect electricity, drive Langevin-type transducer 9 to work.
D, for relatively soft formation select drive one to two group Langevin-type transducer 9 work, for harder or complicated
Stratum drives three groups of Langevin-type transducers 9 to work together.
E, when unloading drilling rod 5, drive power supply 12 to be adjusted to closed mode, first drilling rod 5 is turned on, then by the
One drilling rod water joint 7 is turned on, and unloads drilling rod 5 afterwards and is positioned over assigned position.
F, mud are transported to drill bit by the central passage of drilling rod 5, connect and drive power supply 12, Lan Jie
Literary composition oscillator 9 is started working, and in conjunction with the rotary drilling of drilling tool self, adds and utilizes ultrasound wave to make liquid produce
Raw cavitation effect and the dither tired crushing effect to rock, play the effect efficiently crept into.
Claims (4)
1. the auxiliary detritus device utilizing liquid cavitation effect, it is characterised in that: it is by driving power supply
(12), vibrational system and drive system three part composition, vibrational system include Langevin-type transducer (9),
Lower bit body (1), upper bit body (4), water proof groove (3) and cutting tooth (14)；Drive system includes
There are supporting plate (6), the first drilling rod water joint (7), cable (11) and the second drill bit water joint (13)；
The upper surface of described lower bit body (1) is arranged symmetrically with multiple Langevin-type transducer (9), water proof groove (3)
For toroidal cavity, water proof groove (3) seal closure is located on Langevin-type transducer (9), often saves drilling rod (5)
External screw thread near be equipped with the second supporting plate (6), the second supporting plate (6) is positioned at that drilling rod (5) is internal and spiral shell
The lower end of stricture of vagina, the second supporting plate (6) is for supporting the first drilling rod water joint (7), upper bit body (4)
Inside and external screw thread lower end be provided with the first supporting plate (2), the first supporting plate (2) for support second brill
Head water joint (13)；
Being respectively provided with annulus in the middle of second supporting plate (6) and the first supporting plate (2), cable (11) is through this circle
Ring, the first supports drill rods water joint (7) is enclosed within cable (11) and outward and is positioned on the second supporting plate (6),
Second drill bit water joint (13) is enclosed within cable (11) and outward and is positioned on the first supporting plate (2)；
Cable (11) in drilling rod (5) is linked together by drilling rod the first water joint (7), bores
Cable (11) in Tou is connected by the electric wire of the second drill bit water joint (13) with Langevin-type transducer (9)
It is connected together；
Drive power supply (12) to electrically connect with cable (11), drive power supply (12) by cable (11)
Power to Langevin-type transducer (9), drive it to be operated.
A kind of auxiliary detritus device utilizing liquid cavitation effect the most according to claim 1, it is special
Levy and be: described Langevin-type transducer (9) is by upper end cover (16), piezoelectric ceramic piece (17), copper sheet
(18), bottom end cover (19) and prestressing force screw (20) composition, prestressing force screw (20) is by upper end cover
(16), together with piezoelectric ceramic piece (17) is sequentially fixed at bottom end cover (19), upper end cover (16) with
Equal sandwiched copper between piezoelectric ceramic piece (17) and between piezoelectric ceramic piece (17) and bottom end cover (19)
Sheet (18).
A kind of auxiliary detritus device utilizing liquid cavitation effect the most according to claim 2, it is special
Levying and be: described upper end cover (16) uses stainless steel material, bottom end cover (19) uses aluminium alloy material
Material, bottom end cover (19) is tubaeform or cylindrical.
4. described in claim 1, utilize a detritus method for the auxiliary device of liquid cavitation effect, the party
Method comprises the following steps:
A, connect bit body (4) and lower bit body (1), by the second brill in upper bit body (4)
Head water joint (13) is fixed with the first supporting plate (2)；
When b, jointed rod (5), first the first drilling rod water joint (7) of cable (11) is connected,
Reconnect drilling rod (5)；
C, driving power supply (12) connect electricity, drive Langevin-type transducer (9) work；
D, select to drive one to two group Langevin-type transducer (9) work for relatively soft formation, for harder or
Bad ground drives three groups of Langevin-type transducers (9) to work together；
E, when unloading drilling rod (5), drive power supply (12) to be adjusted to closed mode, first drilling rod (5) turned on,
Again the first drilling rod water joint (7) is turned on, unload drilling rod (5) afterwards and be positioned over assigned position；
F, mud are transported to drill bit by the central passage of drilling rod (5), connect and drive power supply (12),
Langevin-type transducer (9) is started working, and in conjunction with the rotary drilling of drilling tool self, adds and utilizes ultrasound wave to make
The cavitation effect of liquid generation and the dither tired crushing effect to rock, play the effect efficiently crept into
Really.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510078522.8A CN104653107B (en) | 2015-02-15 | 2015-02-15 | Utilize the auxiliary detritus device and method of liquid cavitation effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510078522.8A CN104653107B (en) | 2015-02-15 | 2015-02-15 | Utilize the auxiliary detritus device and method of liquid cavitation effect |
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| CN104653107A CN104653107A (en) | 2015-05-27 |
| CN104653107B true CN104653107B (en) | 2016-09-28 |
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| CN108609623B (en) * | 2018-05-18 | 2021-11-02 | 东莞市南炬高分子材料有限公司 | Preparation method of silica gel with large pore volume and high specific surface area |
| CN110630211B (en) * | 2018-08-31 | 2021-08-17 | 中国矿业大学 | Method for blocking overburden mining-induced fracture by ultrasonic in-situ slurry making |
| CN110410093A (en) * | 2019-08-31 | 2019-11-05 | 中铁工程装备集团有限公司 | A kind of high pressure water cavitation broken rock TBM and its construction method |
| CN111877988B (en) * | 2020-09-01 | 2024-08-13 | 扬州睿德石油机械有限公司 | Hydraulic pulse type torsion impact device |
| CN114086977B (en) * | 2021-11-09 | 2024-04-26 | 中铁工程装备集团有限公司 | Water jet nozzle assisted by encapsulated built-in ultrasonic vibration |
| CN114179220B (en) * | 2021-11-16 | 2023-10-20 | 北京市政路桥股份有限公司 | Ultrasonic vibration cement slurry stirring device and operation method thereof |
| CN115012893B (en) * | 2022-05-31 | 2024-04-16 | 贵州大学 | Ultrasonic wave cooperated hydraulic fracturing device for increasing yield of coalbed methane |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4828052A (en) * | 1988-06-20 | 1989-05-09 | The United States Of America As Represented By The United States Department Of Energy | Ultrasonic drilling apparatus |
| US7591327B2 (en) * | 2005-11-21 | 2009-09-22 | Hall David R | Drilling at a resonant frequency |
| CN103774993B (en) * | 2014-03-02 | 2015-09-30 | 吉林大学 | A kind of piezoelectric ceramic type sonic drill |
| CN104141455B (en) * | 2014-07-08 | 2016-01-13 | 上海中联重科桩工机械有限公司 | Drilling rig apparatus and drilling method of drilling rig |
| CN104265160B (en) * | 2014-07-28 | 2016-03-02 | 东北石油大学 | Hydraulic oscillation axial impact device |
| CN204040907U (en) * | 2014-07-31 | 2014-12-24 | 杭州海勒科技有限公司 | A kind of oil field vibratory drilling instrument |
| CN204532071U (en) * | 2015-02-15 | 2015-08-05 | 吉林大学 | Utilize the auxiliary detritus device of liquid cavitation effect |
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