CN110145234A - A kind of miniature ultrasonic vibration rotary drilling experimental provision and experimental method - Google Patents
A kind of miniature ultrasonic vibration rotary drilling experimental provision and experimental method Download PDFInfo
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- CN110145234A CN110145234A CN201910524974.2A CN201910524974A CN110145234A CN 110145234 A CN110145234 A CN 110145234A CN 201910524974 A CN201910524974 A CN 201910524974A CN 110145234 A CN110145234 A CN 110145234A
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- drilling
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- rock sample
- ultrasonic
- ultrasonic transducer
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Classifications
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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
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors
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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
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
-
- 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
- E21B47/00—Survey of boreholes or wells
-
- 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
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/24—Drilling using vibrating or oscillating means, e.g. out-of-balance masses
Abstract
The present invention discloses a kind of miniature ultrasonic vibration rotary drilling experimental provision and experimental method.The device is made of rotary drilling system, ultrasonic vibration system and control system.Rotary drilling system provides power for drill bit fractured rock, and ultrasonic vibration system includes: conducting slip ring, ultrasonic transducer, supersonic generator；Control system adjusts drilling parameter.Motor and vibrator shell are fixed on upper and lower connecting plate, and follower lever is successively connect with tap, ultrasonic transducer, drilling rod, drill bit.Cylinder is mounted on support frame two sides, and cylinder is fixedly connected with lower connecting plate, by applying bit pressure to lower connecting plate, realizes and promotes or transfer drilling tool.The present invention can simulate the overall process being crushed comprehensively under different frequency ultrasonic activation and different drilling parameters with core-drilling, can also test the influence of different drilling parameters and different structure size drilling tool to the efficiency of drilling, and the performance and quality of evaluable drill bit.
Description
Technical field
The present invention relates to a kind of microdrill experimental bench of vibration revolution detritus, in particular to a kind of miniature ultrasonic vibration
Rotary drilling experimental provision and experimental method are applied to the fields such as geological prospecting, tunnel piercing and engineering driller construction.
Background technique
Micro- brill testing stand is suitable for being engaged in various micro- brill tests, including drillability of rock sample analysis test, drilling tool in laboratory
Timeliness and life test.Drilling tool can be optimized according to test result, Grades of Drillability is carried out to rock sample, drilling efficiency is improved, has
Great theoretical and practical significance.In recent years, with the development of industry, the demand to crude oil and mineral products is increasing.In order to
Improve drilling benefit, the requirement to drilling technique and drilling equipment is also higher and higher, micro- brill testing stand to the of less demanding of environment,
Use scope is wider, is conducive to the research to drilling equipment.Micro- brill testing stand analog really creeps into situation, has rock sample transfer
Movement, power head rotary motion and feed or lifting motion etc., can be realized every drilling parameter in drilling process (bit pressure,
Drilling speed, torque, revolving speed and drilling depth) monitoring, acquisition and processing.
Ultrasonic activation detritus is first to generate rock surface or part tired under the effect of periodic high-frequency vibration power
Labor is destroyed, so that rock be made integrally to generate destruction.In 2001, US National Aeronautics and Space Administration successfully developed ultrasonic drill exploration
Sample device, but drilling depth is excessively shallow.Currently, the research of ultrasonic activation detritus equipment is had made some progress both at home and abroad,
Northeast Petroleum University disclose it is a kind of applied as ultrasonic transducer in petroleum gas field using magnetic telescopic device, Ji
Woods university also discloses a kind of experimental provision and experimental method that ultrasonic activation detritus is generated using piezoelectric ceramics.
Micro- report for boring experiment porch is turned round about ultrasonic activation currently, temporarily having not seen.Based on this, as can by ultrasonic wave
The Rock Technology that resonates simulates the effect of the fractured rock under high frequency vibrating power and revolution cutting force effect in conjunction with micro- brill testing stand
The influence to drilling of ultrasonic transducer and drill bit of fruit, evaluation different structure, performance will have a very important significance, and
The design verification that ultrasonic activation drilling tool can be carried out under lesser cost is conducive to push to ultrasonic resonance detritus equipment
Research and development.
Summary of the invention
The object of the invention is that in view of the above shortcomings of the prior art, providing a kind of miniature ultrasonic vibration abrasion drill
Into experimental bench, the experimental method of miniature ultrasonic vibration rotary drilling experimental bench is additionally provided, solves ultrasonic activation revolution
Micro- problem for boring experiment porch scarcity, studies the ultrasonic waves of different vibration frequencies, structure and size under different drilling parameters
Influence of the energy device to drilling efficiency, simulates true drilling situation, and the development for large-scale ultrasonic wave drilling equipment provides experimental data
Support, and evaluate the performance of drilling tool.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of miniature ultrasonic vibration rotary drilling experimental bench, is pressed from both sides by revolution feed mechanism, ultrasonic vibration mechanism, rock sample
It holds mechanism and control mechanism is constituted.
The revolution feed mechanism is by pedestal, bearing support, upper junction plate, lower connecting plate, pneumatic cylinder, motor, active
Wheel, driven wheel, transmission belt, follower lever, bearing, thrust bearing, drilling rod, drill bit, shell and fixed bracket composition；Bearing support is solid
It is scheduled on pedestal, bearing support passes through fixed bracket and connects with pneumatic cylinder, and motor and shell and upper junction plate, lower connecting plate are fixed and connected
It connects, bearing support two sides are equipped with groove, and upper junction plate, lower connecting plate and bearing support are connected by card slot, and two cylinders are mounted on branch
Bolster two sides, lower end are fixedly connected with lower connecting plate, provide bit pressure for drilling machine, and are controlled drilling rod and promoted and declined, and are driven entire
Drilling system is moved up and down along the groove of bearing support；Driving wheel is fixed on motor, and driven wheel passes through fixing piece and follower lever
Connection, motor deliver torque to follower lever by driving wheel, transmission belt, driven wheel, and bearing is fixed on the shell, on follower lever
End connect with tap, and lower end passes through bearing and connect with ultrasonic transducer, ultrasonic transducer lower end across thrust bearing and
Drilling rod is connected through a screw thread, and drilling rod is connected through a screw thread with drill bit；Shell is consolidated by four part enclosures by bolt and screw association
It is fixed.
The ultrasonic vibration mechanism is made of ultrasonic transducer, conducting slip ring and supersonic generator；It is logical
It crosses insulation sleeve to install conducting slip ring on the shell, electric current is passed to ultrasonic transducer, ultrasonic transducer by conducting slip ring
Centre is set as hollow, passes through drilling fluid, and ultrasonic transducer lower end is connect by screw thread with drilling rod, and drilling rod lower end passes through screw thread
It is connect with drill bit.
The rock sample clamping device includes blowout prevention plate, sink, rock sample clamper, rock sample, fixed bracket；Rock sample clamper
It is fixed on the base, rock sample can be fixed in the water tank by the handwheel by rotating rock sample clamper, and sink is fixed on the base, and be prevented
Spray plate is placed on sink, prevents drilling fluid splash.
The control mechanism includes supersonic generator, frequency converter, pressure regulator valve, flow controller and control cabinet；Ultrasound
Wave producer is connect with ultrasonic transducer；Frequency converter is connected to motor, and may be implemented to adjust revolving speed；Pressure regulator valve and pneumatic cylinder connect
It connects, controls the size of bit pressure, promoted and decline drill bit；Flow controller is connect with water pump, the size of water volume adjustable；Control cabinet
It is connect with supersonic generator, frequency converter, pressure regulator valve, flow controller, control system controls ultrasonic miniature by control cabinet
Vibrodrill experimental provision is, it can be achieved that drilling under different ultrasonic frequency vibratory, revolving speed and bit pressure, flow parameter.
The ultrasonic transducer is a kind of rod-shaped, includes composite piezoelectric ceramic and amplitude transformer, and inner wall insulation is hollow,
It can the ultrasonic transducer that passes through of drilling fluid.
The ultrasonic transducer position moves down, and reduces energy loss, improves capacity usage ratio.
The drilling rig housing is dismountable semi-open-type, is fixed by four part enclosures by bolt and screw association,
It prevents unit temp when work excessively high and facilitates the ultrasonic transducer of test different performance, structure, specification.
The experimental method of above-mentioned miniature ultrasonic vibration slewing drilling machine experimental bench, comprising the following steps:
I prepares rock sample 22 as needed；
Rock sample is fixed on the base 1 by rock sample clamper 21 by II；
III, by with nut will fixed bracket 23, cylinder 5, vibrator shell 18, ultrasonic transducer 13, drilling rod 15, bore
First 16 are fixed on the appropriate location of bearing support 2, guarantee drilling stroke appropriate；
IV, the pump adjustable valve by control cabinet 28, select suitable drilling fluid pump amount, and install open flow plate 17, start
Circulation of drilling fluid；
V, by the motor speed controller of control cabinet 28, select drilling revolving speed appropriate；
VI is made by the drilling machine lifter switch of control cabinet 28, and cylinder 5 applies pressure to lower connecting plate 4, is made under drilling rod 15
Drop, drill bit 16 withstand rock sample 22 by pressure regulator valve control button, set suitable bit pressure；
VII, the supersonic generator frequency adjustment switch by control cabinet 28 add vibration appropriate to ultrasonic transducer
Dynamic frequency.
VIII starts drilling experiment, records experiment parameter；
After the completion of IV, drilling, supersonic generator 24 is closed by control cabinet 28, drilling machine lifter switch is in upper raise-position
It sets, 5 automatic traction drilling rod 15 of cylinder rises, and pump amount is set to zero, and stops circulation of drilling fluid, and experiment terminates.
Compared with prior art, it can simulate the beneficial effects of the present invention are: the present invention and shake in different frequency ultrasonic wave
It moves and is crushed the overall process with core-drilling comprehensively under different drilling parameters, and built a kind of ultrasonic activation slewing drilling machine
It is easy to disassemble, it can also test the influence of different drilling parameters and different structure size drilling tool to the efficiency of drilling, and evaluable brill
The performance and quality of head.
Detailed description of the invention
Fig. 1 is the micro- brill experiment porch schematic view of the front view of the present invention；
Fig. 2 is the micro- left view structure chart for boring experiment porch of the present invention.
In figure: 1. pedestal, 2. bearing support, 3. upper junction plate, 4. lower connecting plate, 5. pneumatic cylinder, 6. motor, 7. driving wheel
8. 13. ultrasonic transducer of driven wheel 9. transmission belt, 10. tap, 11. follower lever, 12. bearing, 14. thrust bearing 15.
21. rock sample clamper of drilling rod 16. drill bit, 17. blowout prevention plate, 18. shell, 19. sink, 20. conducting slip ring, 22. rock sample 23.
Fixed 24. supersonic generator of bracket, 25. frequency converter, 26. pressure regulator valve, 27. flow controller, 28. control cabinet.
Specific embodiment
As shown in Figure 1 and Figure 2, miniature ultrasonic of the present invention vibrates rotary drilling experimental bench, by revolution feed mechanism, ultrasound
Wave vibrating mechanism, rock sample clamping device and control mechanism are constituted.
The revolution feed mechanism be by pedestal 1, bearing support 2, upper junction plate 3, lower connecting plate 4, pneumatic cylinder 5, motor 6,
Driving wheel 7, driven wheel 8, transmission belt 9, follower lever 11, bearing 12, thrust bearing 14, drilling rod 15, drill bit 16, shell 18 and solid
Fixed rack 23 forms；Bearing support 2 is fixed on pedestal 1, and bearing support 2 passes through fixed bracket 23 and pneumatic cylinder 5 connects, 6 He of motor
Shell 18 is fixedly connected with upper junction plate 3, lower connecting plate 4,2 two sides of bearing support be equipped with groove, upper junction plate 3, lower connecting plate 4 with
Bearing support 2 is connected by card slot, and two cylinders 5 are mounted on 2 two sides of bearing support, and lower end is fixedly connected with lower connecting plate 4, is drilling machine
Bit pressure is provided, and controls drilling rod 15 and is promoted and declined, entire drilling system is driven to move up and down along the groove of bearing support 2；It is main
Driving wheel 7 is fixed on motor 6, and driven wheel 8 is connect by fixing piece with follower lever 11, motor 6 pass through driving wheel 7, transmission belt 9,
Driven wheel 8 delivers torque to follower lever 11, and bearing 12 is fixed on shell 18, and 11 upper end of follower lever is connect with tap 10,
Lower end passes through bearing 12 and connect with ultrasonic transducer 13, and 13 lower end of ultrasonic transducer passes through thrust bearing 14 and drilling rod 15 is logical
Threaded connection is crossed, drilling rod 15 is connected through a screw thread with drill bit 16；Shell 18 is consolidated by four part enclosures by bolt and screw association
It is fixed.
The ultrasonic vibration mechanism is by ultrasonic transducer 13, conducting slip ring 20 and 24 groups of supersonic generator
At；Conducting slip ring 20 is mounted on shell 18 by insulation sleeve, electric current is passed to ultrasonic transducer 13 by conducting slip ring 20,
It is set as hollow among ultrasonic transducer 13, passes through drilling fluid, 13 lower end of ultrasonic transducer is connected by screw thread and drilling rod 15
It connects, 15 lower end of drilling rod is connect by screw thread with drill bit 16.
The rock sample clamping device is by blowout prevention plate 17, sink 19, rock sample clamper 21, rock sample 22 and fixed 23 groups of bracket
At；Rock sample clamper 21 is fixed on pedestal 1, and rock sample 22 can be fixed on sink 19 by the handwheel by rotating rock sample clamper 21
Interior, sink 19 is fixed on pedestal 1, and blowout prevention plate 17 is placed on sink 19, prevents drilling fluid splash.
The control mechanism is by supersonic generator 24, frequency converter 25, pressure regulator valve 26, flow controller 27 and control cabinet
28 compositions；Supersonic generator 24 is connect with ultrasonic transducer 13, provides the ultrasonic wave of different frequency；Frequency converter 25 and motor
6 connections may be implemented to adjust revolving speed；Pressure regulator valve 26 is connect with pneumatic cylinder 5, controls the size of bit pressure, flow controller 27 and water
19 connection of pump, the size of water volume adjustable；Control cabinet 28 and supersonic generator 24, frequency converter 25, pressure regulator valve 26, flow control
Device 27 connects, and control system controls ultrasonic miniature vibrodrill experimental provision, it can be achieved that different ultrasonic waves by control cabinet 28
Drilling under vibration frequency, revolving speed and bit pressure, flow parameter.
The ultrasonic transducer 13 be it is a kind of it is rod-shaped include composite piezoelectric ceramic and amplitude transformer, in inner wall insulation
Sky, the ultrasonic transducer passed through for drilling fluid.
13 position of ultrasonic transducer moves down, and improves capacity usage ratio.
The drilling rig housing 18 is dismountable semi-open-type, is consolidated by four part enclosures by bolt and screw association
It is fixed.It prevents equipment temperature excessively high, facilitates the different sizes of test, the ultrasonic transducer of vibration frequency and various structures.
The experimental method of above-mentioned detachable miniature ultrasonic vibration slewing drilling machine experimental bench, comprising the following steps:
I prepares rock sample 22 as needed；
Rock sample is fixed on the base 1 by rock sample clamper 21 by II；
III, by with nut will fixed bracket 23, cylinder 5, vibrator shell 18, ultrasonic transducer 13, drilling rod 15, bore
First 16 are fixed on the appropriate location of bearing support 2, guarantee drilling stroke appropriate；
IV, the pump adjustable valve by control cabinet 28, select suitable drilling fluid pump amount, and install open flow plate 17, start
Circulation of drilling fluid；
V, by the motor speed controller of control cabinet 28, select drilling revolving speed appropriate；
VI is made by the drilling machine lifter switch of control cabinet 28, and cylinder 5 applies pressure to lower connecting plate 4, is made under drilling rod 15
Drop, drill bit 16 withstand rock sample 22 by pressure regulator valve control button, set suitable bit pressure；
VII, the supersonic generator frequency adjustment switch by control cabinet 28 add vibration appropriate to ultrasonic transducer
Dynamic frequency.
VIII starts drilling experiment, records experiment parameter；
After the completion of IV, drilling, supersonic generator 24 is closed by control cabinet 28, drilling machine lifter switch is in upper raise-position
It sets, 5 automatic traction drilling rod 15 of cylinder rises, and pump amount is set to zero, and stops circulation of drilling fluid, and experiment terminates.
Claims (6)
1. a kind of miniature ultrasonic vibrates rotary drilling experimental bench, it is characterised in that: by revolution feed mechanism, ultrasonic activation machine
Structure, rock sample clamping device and control mechanism are constituted；
The revolution feed mechanism mainly blocks by pedestal (1), the bearing support (2) being fixed on above pedestal (1), with bearing support (2)
The upper junction plate (3) and lower connecting plate (4) that connect, be mounted on the cylinder (5) of bearing support (2) two sides two, respectively with upper junction plate (3)
With lower connecting plate (4) fixed motor (6) and shell (18), the driving wheel (7) being fixed on motor (6), pass through transmission belt (9)
Driven wheel (8), follower lever (11), drilling rod (15) and the drill bit fixed with driven wheel (8) being connected with driving wheel (7) transmission
(16) it forms；Follower lever (11) upper end is connected with tap (10), and lower end passes through the bearing being fixed on shell (18)
(12) it is connected with the ultrasonic transducer (13) in ultrasonic vibration mechanism；Ultrasonic transducer (13) lower end passes through thrust bearing
(14) it is connected with drilling rod (15)；Drilling rod (15) is to be threadedly coupled with drill bit (16)；Described two cylinder (5) lower ends and lower connecting plate
(4) fixed, bit pressure is provided for drilling machine, and control drilling rod (15) and promoted and declined；
The ultrasonic vibration mechanism further includes conducting slip ring (20) and supersonic generator (24)；The conducting slip ring (20) is logical
It crosses insulation sleeve to be mounted on shell (18), electric current is passed into ultrasonic transducer (13)；
The rock sample clamping device is by blowout prevention plate (17), sink (19), rock sample clamper (21), rock sample (22) and fixed bracket
(23) it forms；The sink (19) and rock sample clamper (21) are each attached on pedestal (1), by rotating rock sample clamper (21)
Handwheel rock sample (22) can be fixed in sink (19), blowout prevention plate (17) is placed on sink (19)；
The control mechanism is by supersonic generator (24), frequency converter (25), pressure regulator valve (26), flow controller (27) and control
Cabinet (28) composition processed；The supersonic generator (24) connect with ultrasonic transducer (13), for providing the super of different frequency
Sound wave；Frequency converter (25) is connected with motor (6), for adjusting revolving speed；Pressure regulator valve (26) is connected with pneumatic cylinder (5)；Flow control
Device (27) is connected with water pump (19), is used for regulating pondage；Control cabinet (28) respectively with supersonic generator (24), frequency converter
(25), pressure regulator valve (26) and flow controller (27) are connected.
2. a kind of miniature ultrasonic according to claim 1 vibrates rotary drilling experimental bench, it is characterised in that: the bearing
Frame (2) two sides are set there are two groove, and upper junction plate (3) and lower connecting plate (4) are clamped by groove and bearing support (2) respectively.
3. a kind of miniature ultrasonic according to claim 1 vibrates rotary drilling experimental bench, it is characterised in that: described two
Cylinder (5) passes through fixed bracket (23) and is mounted on bearing support (2) two sides.
4. a kind of miniature ultrasonic according to claim 1 vibrates rotary drilling experimental bench, it is characterised in that: the ultrasound
Wave transducer (13) be it is a kind of it is rod-shaped include composite piezoelectric ceramic and amplitude transformer, inner wall insulation is hollow, can be logical for drilling fluid
The ultrasonic transducer crossed.
5. a kind of miniature ultrasonic according to claim 1 vibrates rotary drilling experimental bench, it is characterised in that: the drilling machine
Shell (18) is dismountable semi-open-type, is fixed by four part enclosures by bolt and screw association.
6. a kind of experimental method of miniature ultrasonic vibration slewing drilling machine experimental bench according to claim 1, feature exist
In, comprising the following steps:
I prepares rock sample (22) as needed；
Rock sample is fixed on the base (1) by rock sample clamper (21) by II；
III, by will fixed bracket (23), cylinder (5), vibrator shell (18), ultrasonic transducer (13), drilling rod with nut
(15) and drill bit (16) is fixed with bearing support (2), guarantees drilling stroke appropriate；
IV, the pump adjustable valve for passing through control cabinet (28), select suitable drilling fluid pump amount, and install open flow plate (17), start
Circulation of drilling fluid；
V, the motor speed controller for passing through control cabinet (28), select drilling revolving speed appropriate.
VI is made by the drilling machine lifter switch of control cabinet (28), and cylinder (5) applies pressure to lower connecting plate (4), makes drilling rod (15)
Decline, drill bit (16) withstand rock sample (22) by pressure regulator valve control button, set suitable bit pressure；
VII, the supersonic generator frequency adjustment switch for passing through control cabinet (28) set vibration frequency to ultrasonic transducer；
VIII starts drilling experiment, records experiment parameter；
After the completion of IV, drilling, supersonic generator (24) are closed by control cabinet (28), drilling machine lifter switch is in upper raise-position
It sets, cylinder (5) automatic traction drilling rod (15) rises, and pump amount is set to zero, and stops circulation of drilling fluid, and experiment terminates.
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| CN201910524974.2A CN110145234B (en) | 2019-06-18 | 2019-06-18 | Miniature ultrasonic vibration rotary drilling experimental device and experimental method |
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| CN201910524974.2A CN110145234B (en) | 2019-06-18 | 2019-06-18 | Miniature ultrasonic vibration rotary drilling experimental device and experimental method |
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| CN110145234A true CN110145234A (en) | 2019-08-20 |
| CN110145234B CN110145234B (en) | 2020-04-14 |
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Cited By (7)
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| CN112627801A (en) * | 2020-12-20 | 2021-04-09 | 长春工程学院 | Micro-drilling experiment platform |
| CN112983252A (en) * | 2021-02-27 | 2021-06-18 | 中国地质大学（武汉） | Top drive type micro-drilling experiment platform for indoor drilling simulation |
| CN113882859A (en) * | 2021-07-28 | 2022-01-04 | 中国石油天然气股份有限公司 | Laser and ultrasonic vibration combined rock crushing assisting device and method |
| CN114059970A (en) * | 2021-11-16 | 2022-02-18 | 吉林大学 | Bidirectional rotary multifunctional experiment platform with vibration function |
| CN114211023A (en) * | 2021-12-30 | 2022-03-22 | 杭州临安雄风机械有限公司 | Ultrasonic vibration assists equipment for drilling |
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| CN115012893A (en) * | 2022-05-31 | 2022-09-06 | 贵州大学 | Ultrasonic wave is device of hydraulic fracturing increase production coal seam gas in coordination |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112627801A (en) * | 2020-12-20 | 2021-04-09 | 长春工程学院 | Micro-drilling experiment platform |
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| CN112983252B (en) * | 2021-02-27 | 2022-04-29 | 中国地质大学（武汉） | Top drive type micro-drilling experiment platform for indoor drilling simulation |
| CN113882859A (en) * | 2021-07-28 | 2022-01-04 | 中国石油天然气股份有限公司 | Laser and ultrasonic vibration combined rock crushing assisting device and method |
| CN114059970A (en) * | 2021-11-16 | 2022-02-18 | 吉林大学 | Bidirectional rotary multifunctional experiment platform with vibration function |
| CN114264492A (en) * | 2021-12-02 | 2022-04-01 | 中煤科工集团西安研究院有限公司 | Rig pulling and rotation composite test system and method |
| CN114264492B (en) * | 2021-12-02 | 2023-11-21 | 中煤科工集团西安研究院有限公司 | Drilling machine pulling and turning composite testing system and method |
| CN114211023A (en) * | 2021-12-30 | 2022-03-22 | 杭州临安雄风机械有限公司 | Ultrasonic vibration assists equipment for drilling |
| CN115012893A (en) * | 2022-05-31 | 2022-09-06 | 贵州大学 | Ultrasonic wave is device of hydraulic fracturing increase production coal seam gas in coordination |
| 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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