CN107664012A - The two-way high frequency composite impact device of turbine type - Google Patents
The two-way high frequency composite impact device of turbine type Download PDFInfo
- Publication number
- CN107664012A CN107664012A CN201711085649.8A CN201711085649A CN107664012A CN 107664012 A CN107664012 A CN 107664012A CN 201711085649 A CN201711085649 A CN 201711085649A CN 107664012 A CN107664012 A CN 107664012A
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- turbine
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- assembly
- rotary valve
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- 239000002131 composite material Substances 0.000 title claims abstract description 14
- 238000005553 drilling Methods 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 239000012530 fluid Substances 0.000 claims abstract description 13
- 239000011435 rock Substances 0.000 claims abstract description 12
- 230000008878 coupling Effects 0.000 claims abstract description 4
- 238000010168 coupling process Methods 0.000 claims abstract description 4
- 238000005859 coupling reaction Methods 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 7
- 241000237509 Patinopecten sp. Species 0.000 claims description 3
- 238000007373 indentation Methods 0.000 claims description 3
- 235000020637 scallop Nutrition 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 210000003660 reticulum Anatomy 0.000 description 15
- 230000035515 penetration Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010060904 Freezing phenomenon Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 230000003116 impacting 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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. hammers
- E21B4/14—Fluid operated hammers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- 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
The invention provides a kind of two-way high frequency composite impact device of turbine type, is made up of turbine assembly, impact assembly and crossover sub.Described turbine assembly front end coupling adapter, crossover sub front end connection impact assembly, the mechanical energy for being rotated hydraulic energy transfer for turbine wheel shaft by turbine assembly, so as to drive the rotary valve rotation of impact assembly, due to being all provided with hole in rotary valve and bonnet, drilling fluid is set periodically to enter in tup and hammer body barrel chamber, hammer body cylinder, which is periodically hit, in the promotion lower ram of liquid produces circumferential jarring, the axial hole of rotary valve and bonnet periodically dislocation simultaneously changes fluid pressure, produce the axial vibrations of high frequency, and axial and circumferential impulsive force is delivered to by drill bit by lower contact, eliminate stick-slip phenomenon, protect drill bit, so as to improve drill bit efficiency of breaking rock.The two-way high frequency composite impact device of turbine type of the present invention produces two kinds of impacts of axial and circumferential using drilling fluid, can effectively improve drilling efficiency.
Description
Technical field
The present invention is compound on a kind of downhole tool for oil drilling, more particularly to a kind of two-way high frequency of turbine type
Impactor.
Background technology
In oil conventional drilling, PDC drill bit is widely used, when operating at the scene, often because driller's skill
Art, experience problem or because borehole wall frictional resistance problem, cause to be applied to the brill of drill bit so that send brill not in time or send drill-through fast
Press unstable, influence efficiency of breaking rock, it could even be possible to damaging drill bit, the cutting tooth for the drill bit that bursts apart because of the pressure of the drill increase suddenly
Deng influenceing rate of penetration.When boring hard or abrasive layer, usually not enough moments of torsion crush another aspect PDC drill bit
Rock, so as to produce the phenomenon of bit freezing, the release of downhole tool torsion causes drill bit to fail.Oil field deep formation rock is hard, grinds
It is high to grind extreme value, using conventional roller bit cutting, single footage per bit is few, it is necessary to multiple trips and rate of penetration is relatively low；Should
When carrying out compound drilling with screw rod, because temperature is higher in deep-well, the screw rod life-span is low, using effect is undesirable；In addition, using gas
Body drilling technology drilling can largely improve rate of penetration, but easily cause down hole problem to be sent out in the case of formation water output
It is raw, and gas drilling corollary equipment is more, cost is relatively large.
For problem above, multiple types of tools has been attempted both at home and abroad, has achieved certain speed-increasing effect, and its medium-high frequency is reversed
Impact class instrument accounts for the leading position of speed-raising instrument.Such instrument can give drill bit additional high torsional pulse power, aid in drill bit
Broken rock, the stick-slip phenomenon of drill string is reduced, improve rate of penetration.The speed-raising instrument of axial impact type has also been emerged in recent years,
Such instrument can increase substantially the rock depth of tooth penetration of drill bit, increase efficiency of breaking rock, have that simple to operate, speed-increasing effect is good
The features such as.Therefore, it is necessary to research and develop a kind of power that can be provided by drilling fluid, axial impact can be both provided, can also
The advantages of compound doulde-action DTH hammer circumferentially impacted is provided, while there are both, drill bit broken rock is aided in, protect drill bit, extended
Drilling life of bit, improve rate of penetration.
The content of the invention
In order to solve the stick-slip phenomenon of drill bit bit freezing and drill string in drilling process, it is proposed that a kind of two-way high frequency of turbine type
Composite impact device, the defects of to overcome prior art, improve rate of penetration.The instrument has axial impact and circumferential punching simultaneously
Hit, can effectively protect drill bit, reduce cost, improve efficiency of breaking rock, increase drilling efficiency.
The technical scheme is that：The two-way high frequency composite impact device of turbine type is by turbine assembly, impact assembly and turned
Changing-over head forms, turbine assembly front end coupling adapter, crossover sub front end connection impact assembly；Described turbine assembly bag
Include turbine body, angular contact ball bearing, anti-lost ring a, spacing collar a, turbine stator, turbine rotor, driving key, spacing collar b,
Rectangular seal, turbine wheel shaft, cylinder roller bearing, thrust ball bearing, anti-lost ring b, successively by turbine rotor, turbine stator and limit
Position sleeve b is arranged on turbine wheel shaft by driving key, anti-lost ring a is arranged on to the top of turbine wheel shaft, by two angular contact ball axles
Hold and be reversibly mounted on turbine body and turbine wheel shaft top, spacing collar a and rectangular seal are installed in turbine body in advance,
Turbine stator is put into turbine body by spline fitted again, from top to bottom successively by cylinder roller bearing, thrust ball bearing
Turbine wheel shaft leading portion step is arranged on spacing ring, turbine wheel shaft front end is threadedly coupled with power transmission shaft；Crossover sub rear end and turbine sheet
Body is connected, and front end is connected with short circuit head；Described impact assembly includes sleeve, rotary valve, bonnet, tup, hammer body cylinder, impact shell
Body, locking cylinder and lower contact, the rear end of rotary valve are threadedly secured to power transmission shaft front end, and bonnet is arranged on the end of hammer body cylinder
Face, tup are arranged between bonnet and hammer body cylinder, and hammer body cylinder is arranged on the inside of impact housing, passes through locking cylinder and hammer body cylinder spiral shell
Lower contact is axially fixed on impact housing by line connection, and hammer body cylinder and impact housing are circumferential with lower contact by way of dental inlay
Fixed, sleeve is arranged between crossover sub and hammer body cylinder；Liquid energy is converted into by rotation by the turbine rotor of turbine assembly
The mechanical energy turned, so as to drive the rotary valve rotation of impact assembly, due to being all provided with hole in rotary valve and bonnet, make drilling fluid all
Phase property is entered in tup and hammer body barrel chamber, and periodically hitting hammer body cylinder in the promotion lower ram of liquid produces circumferential jarring, revolves simultaneously
The periodically dislocation of the axial hole of rotary valve and bonnet changes fluid pressure, produces the axial vibrations of high frequency, and will by lower contact
Axial and circumferential impulsive force is delivered to drill bit, eliminates stick-slip phenomenon, improves efficiency of breaking rock.
The two-way high frequency composite impact device of turbine type described in such scheme, it is characterised in that：Before described rotary valve
End plate face is provided with two symmetrical scallop holes, is circumferentially provided with two symmetrical circular holes in back end cylindrical, rotary valve is in turbine assembly
Drive under rotate, and make fluid pressure cyclically-varying in the presence of bonnet, produce axial vibrations impact；Described bonnet
4 fan-shaped inlet openings are provided with, including two impact inlet openings and two reset backhaul inlet openings, rotary valve rotation makes liquid
Periodically enter impact inlet opening and reset backhaul inlet opening, the intracavitary of tup and hammer body cylinder is entered by inlet opening, utilizes liquid
Pressure promotes tup to be rotated in hammer body cylinder indentation, there, and liquid enters from impact inlet opening promotes tup circumference positive direction to hit hammer body
Cylinder, liquid enter promotion tup circumference opposite direction return from backhaul inlet opening is resetted, and the sectional area ratio for impacting inlet opening resets back
The area of journey inlet opening is big, and single-revolution can be achieved to impact.
Hammer body cylinder described in the two-way high frequency composite impact device of such scheme turbine type, hit end and be provided with two platforms being distributed
Rank breach, internal thread is machined with front end, for coordinating with the external screw thread of locking cylinder.
The beneficial effects of the invention are as follows：(1) solve that down-hole equipment in drilling process easily causes is hampered or meets card
Problem；(2) it is short not produce axial compressive force, energy conversion efficiency height, axial dimension for the turbine assembly of the instrument；(3) instrument
It is reasonable in design, dependable performance, while producing circumferential impact, axial vibration impact can be also produced, so as to effectively protect drill bit, is disappeared
Except the stick-slip and bit freezing phenomenon of drill bit, rate of penetration is improved；（4）The instrument strong adaptability, can be applied not only to deep layer straight well, also
Can cooperating with screw drill tool and orientation device be applied in directional well and horizontal well；（5）The instrument, which has, to be acted without dead point, in circumference just
Assembly is impacted the advantages that impulsive force is big, reverse impact power is small；（6）The advantages that simple to operate, long lifespan, speed-increasing effect are good, matches somebody with somebody
PDC drill bit is closed using deep well hard formation rate of penetration can be effectively improved.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the Section A-A figure in Fig. 1 of the present invention.
Fig. 3 is the section B-B figure in Fig. 1 of the present invention.
Fig. 4 is the C-C sectional views in Fig. 1 of the present invention.
Fig. 5 is rotary valve structure schematic diagram.
Fig. 6 is valve cover structure schematic diagram.
Fig. 7 is hammehead structure schematic three dimensional views.
Fig. 8 is hammer body barrel structure schematic diagram.
Fig. 9 is lower contact structure three-dimensional schematic diagram.
1. turbine body in figure, 2. angular contact ball bearings, 3. anti-lost ring a, 4. spacing collar a, 5. turbine stators, 6. turbines
Rotor, 7. driving keys, 8. spacing collar b, 9. rectangular seals, 10. turbine wheel shafts, 11. cylinder roller bearings, 12. thrust ball axles
Hold, 13. anti-lost ring b, 14. crossover subs, 15. power transmission shafts, 16. short circuit heads, 17. sleeves, 18. rotary valves, 19. bonnets, 20. hammers
Head, 21. hammer body cylinders, 22. impact housings, 23. locking cylinders, 24. lower contacts.
Embodiment
Below in conjunction with the accompanying drawings and embodiment, the present invention will be described in detail.
Referring to accompanying drawing, the two-way high frequency composite impact device of turbine type is by turbine assembly, impact assembly and crossover sub（14）Group
Into, turbine assembly front end coupling adapter 14, the front end of crossover sub 14 connection impact assembly；Described turbine assembly includes whirlpool
Take turns body 1, angular contact ball bearing 2, anti-lost ring a3, spacing collar a4, turbine stator 5, turbine rotor 6, driving key 7, stop collar
Cylinder b8, rectangular seal 9, turbine wheel shaft 10, cylinder roller bearing 11, thrust ball bearing 12, anti-lost ring b13, successively turn turbine
Son 6, turbine stator 5 and spacing collar b8 are arranged on turbine wheel shaft 10 by driving key 7, and anti-lost ring a3 is arranged on into turbine wheel shaft 10
Top, two angular contact ball bearings 2 are reversibly mounted on turbine body 1 and the top of turbine wheel shaft 10, in advance by spacing collar a4
It is installed in turbine body 1 with rectangular seal 9, then turbine stator 5 is put into turbine body 1 by spline fitted, from upper
Arrive down and cylinder roller bearing 11, thrust ball bearing 12 and spacing ring 13 are arranged on the leading portion step of turbine wheel shaft 10, turbine wheel shaft successively
10 front ends are threadedly coupled with power transmission shaft 15；The rear end of crossover sub 14 is connected with turbine body 1, and front end is connected with short circuit head 16.
Described impact assembly is by sleeve 17, rotary valve 18, bonnet 19, tup 20, hammer body cylinder 21, impact housing 22, lock
Tight cylinder 23 and lower contact 24 form, and the rear end of rotary valve 18 is threadedly secured to the front end of power transmission shaft 15, and bonnet 19 is arranged on hammer
The end face of body cylinder 21, tup 24 are arranged between bonnet 21 and hammer body cylinder 21, and hammer body cylinder 21 is arranged on the inside of impact housing 22,
It is threadedly coupled by locking cylinder 23 and hammer body cylinder 21 and lower contact 24 is axially fixed on impact housing 22, hammer body cylinder 21 and impact
Housing 22 is by way of dental inlay and lower contact（24）It is circumferentially fixed, sleeve（17）Installed in crossover sub（14）With hammer body cylinder 21
Between；Liquid energy is converted into the mechanical energy of rotation by the turbine rotor 6 of turbine assembly, so as to drive the rotation of impact assembly
Rotary valve 18 rotates, and due to being all provided with hole in rotary valve 18 and bonnet 19, drilling fluid is periodically entered tup 20 and the chamber of hammer body cylinder 21
It is interior, periodically hit hammer body cylinder in the promotion lower ram 20 of liquid and produce circumferential jarring, while the axle of rotary valve 18 and bonnet 19
Change fluid pressure to hole periodically dislocation, produce the axial vibrations of high frequency, and rush axial and circumferential by lower contact 21
Hit power and be delivered to drill bit, eliminate stick-slip phenomenon, improve efficiency of breaking rock.
The front end card of described rotary valve 18 is provided with two symmetrical scallop holes, back end cylindrical be circumferentially provided with two it is right
The circular hole of title, rotary valve 18 rotate under the drive of turbine assembly, and fluid pressure is periodically become in the presence of bonnet 19
Change, produce axial vibrations impact；Described bonnet 19 is provided with 4 fan-shaped inlet openings, including two impact inlet openings and two
Individual reset backhaul inlet opening, the rotation of rotary valve 18 make liquid periodically enter impact inlet opening and reset backhaul inlet opening, pass through
Inlet opening enters the intracavitary of tup 20 and hammer body cylinder 21, is rotated using hydraulic drive tup 20 in the indentation, there of hammer body cylinder 21, liquid
Enter from impact inlet opening and promote 20 circumferential positive direction of tup to hit hammer body cylinder 21, liquid enters from reset backhaul inlet opening to be promoted
The circumferential opposite direction return of tup 20, it is bigger than the area for resetting backhaul inlet opening to impact the sectional area of inlet opening, can be achieved single-revolution to
Impact.
Described hammer body cylinder 21, hit end and be provided with two step breach being distributed, be machined with internal thread in front end, be used for
Coordinate with the external screw thread of locking cylinder 23.
Claims (4)
1. the two-way high frequency composite impact device of turbine type, it is characterised in that：The two-way high frequency composite impact device of described turbine type is by whirlpool
Wheel assembly, impact assembly and crossover sub（14）Composition, turbine assembly front end coupling adapter（14）, crossover sub（14）Before
End connection impact assembly；Described turbine assembly includes turbine body（1）, angular contact ball bearing（2）, anti-lost ring a（3）, it is spacing
Sleeve a（4）, turbine stator（5）, turbine rotor（6）, driving key（7）, spacing collar b（8）, rectangular seal（9）, turbine wheel shaft
（10）, cylinder roller bearing（11）, thrust ball bearing（12）, anti-lost ring b（13）, successively by turbine rotor（6）, turbine stator
（5）With spacing collar b（8）Pass through driving key（7）Installed in turbine wheel shaft（10）On, by anti-lost ring a（3）Installed in turbine wheel shaft（10）
Top, by two angular contact ball bearings（2）It is reversibly mounted on turbine body（1）And turbine wheel shaft（10）Top, in advance will be spacing
Sleeve a（4）And rectangular seal（9）It is installed to turbine body（1）On, then by spline fitted by turbine stator（5）It is put into whirlpool
Take turns body（1）It is interior, from top to bottom successively by cylinder roller bearing（11）, thrust ball bearing（12）And spacing ring（13）Installed in whirlpool
Wheel shaft（10）Leading portion step, turbine wheel shaft（10）Front end and power transmission shaft（15）Threaded connection；Crossover sub（14）Rear end and turbine sheet
Body（1）Connection, front end and short circuit head（16）Connection；Described impact assembly includes sleeve（17）, rotary valve（18）, bonnet
（19）, tup（20）, hammer body cylinder（21）, impact housing（22）, locking cylinder（23）And lower contact（24）, rotary valve（18）Rear end
It is threadedly secured to power transmission shaft（15）Front end, bonnet（19）Installed in hammer body cylinder（21）End face, tup（24）Installed in valve
Lid（21）With hammer body cylinder（21）Between, hammer body cylinder（21）Installed in impact housing（22）Inside, pass through locking cylinder（23）And hammer
Body cylinder（21）It is threadedly coupled lower contact（24）It is axially fixed in impact housing（22）On, hammer body cylinder（21）With impact housing（22）
By way of dental inlay and lower contact（24）It is circumferentially fixed, sleeve（17）Installed in crossover sub（14）With hammer body cylinder（21）It
Between；Pass through the turbine rotor of turbine assembly（6）Liquid energy is converted into the mechanical energy of rotation, so as to drive the rotation of impact assembly
Rotary valve（18）Rotation, due in rotary valve（18）And bonnet（19）Hole is all provided with, drilling fluid is periodically entered tup（20）And hammer
Body cylinder（21）Intracavitary, in the promotion lower ram of liquid（20）Periodically hit hammer body cylinder and produce circumferential jarring, while rotary valve
（18）And bonnet（19）Axial hole periodically dislocation change fluid pressure, produce the axial vibrations of high frequency, and connect under
Head（21）Axial and circumferential impulsive force is delivered to drill bit, eliminates stick-slip phenomenon, improves efficiency of breaking rock.
2. the two-way high frequency composite impact device of turbine type according to claim 1, it is characterised in that：Described rotary valve（18）
Front end card be provided with two symmetrical scallop holes, be circumferentially provided with two symmetrical circular holes, rotary valve in back end cylindrical（18）
Rotated under the drive of turbine assembly, and in bonnet（19）In the presence of make fluid pressure cyclically-varying, produce axial vibrations punching
Hit.
3. the two-way high frequency composite impact device of turbine type according to claim 1, it is characterised in that：Described bonnet（19）Open
There are 4 fan-shaped inlet openings, including two impact inlet openings and two reset backhaul inlet openings, rotary valve（18）Rotation makes liquid
Body periodically enters impact inlet opening and resets backhaul inlet opening, enters tup by inlet opening（20）With hammer body cylinder（21）Chamber
It is interior, utilize hydraulic drive tup（20）In hammer body cylinder（21）Indentation, there rotates, and liquid enters from impact inlet opening promotes tup
（20）Circumferential positive direction hits hammer body cylinder（21）, liquid is from backhaul inlet opening is resetted into promotion tup（20）Circumferential opposite direction is returned
Position, it is bigger than the area for resetting backhaul inlet opening to impact the sectional area of inlet opening, and single-revolution can be achieved to impact.
4. the two-way high frequency composite impact device of turbine type according to claim 1, it is characterised in that：Described hammer body cylinder
（21）, hit end and be provided with two step breach being distributed, be machined with internal thread in front end, be used for and locking cylinder（23）Outer spiral shell
Line coordinates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711085649.8A CN107664012B (en) | 2017-11-07 | 2017-11-07 | Turbine type bidirectional high-frequency composite impactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711085649.8A CN107664012B (en) | 2017-11-07 | 2017-11-07 | Turbine type bidirectional high-frequency composite impactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107664012A true CN107664012A (en) | 2018-02-06 |
| CN107664012B CN107664012B (en) | 2023-05-02 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711085649.8A Active CN107664012B (en) | 2017-11-07 | 2017-11-07 | Turbine type bidirectional high-frequency composite impactor |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108104714A (en) * | 2018-02-08 | 2018-06-01 | 西南石油大学 | Differential torsion impact device based on screw rod and gear |
| CN108104715A (en) * | 2018-02-08 | 2018-06-01 | 西南石油大学 | Torsion impact device based on turbine and gear |
| CN108798502A (en) * | 2018-07-03 | 2018-11-13 | 西南石油大学 | Screw composite impact device |
| CN109555471A (en) * | 2018-11-21 | 2019-04-02 | 中国石油大学(华东) | A kind of rotation type torsion impact generating device and its working method |
| CN109826558A (en) * | 2019-04-03 | 2019-05-31 | 四川省贝特石油技术有限公司 | Hydraulic high-frequency percussion rock crushing tool |
| CN110259374A (en) * | 2019-07-26 | 2019-09-20 | 中国地质科学院勘探技术研究所 | A kind of high temperature hard rock speed-raising drilling tool |
| CN112627721A (en) * | 2020-12-19 | 2021-04-09 | 李永和 | Continuous axial impact rock breaking hammer |
| CN113006680A (en) * | 2021-03-19 | 2021-06-22 | 成都欧维恩博石油科技有限公司 | Low-pressure-loss torsion impact drilling tool and rock breaking method |
| CN117386314A (en) * | 2023-12-13 | 2024-01-12 | 中国石油集团川庆钻探工程有限公司 | Liquid-driven coiled tubing jar |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108104714A (en) * | 2018-02-08 | 2018-06-01 | 西南石油大学 | Differential torsion impact device based on screw rod and gear |
| CN108798502A (en) * | 2018-07-03 | 2018-11-13 | 西南石油大学 | Screw composite impact device |
| CN109555471A (en) * | 2018-11-21 | 2019-04-02 | 中国石油大学(华东) | A kind of rotation type torsion impact generating device and its working method |
| CN109826558A (en) * | 2019-04-03 | 2019-05-31 | 四川省贝特石油技术有限公司 | Hydraulic high-frequency percussion rock crushing tool |
| CN109826558B (en) * | 2019-04-03 | 2024-04-05 | 四川省贝特石油技术有限公司 | Hydraulic high-frequency impact rock breaking tool |
| CN110259374B (en) * | 2019-07-26 | 2024-02-06 | 中国地质科学院勘探技术研究所 | High Wen Yingyan accelerating drilling tool |
| CN110259374A (en) * | 2019-07-26 | 2019-09-20 | 中国地质科学院勘探技术研究所 | A kind of high temperature hard rock speed-raising drilling tool |
| CN112627721A (en) * | 2020-12-19 | 2021-04-09 | 李永和 | Continuous axial impact rock breaking hammer |
| CN112627721B (en) * | 2020-12-19 | 2022-11-01 | 盘锦卓汇钻井技术开发有限责任公司 | Continuous axial impact rock breaking hammer |
| CN113006680A (en) * | 2021-03-19 | 2021-06-22 | 成都欧维恩博石油科技有限公司 | Low-pressure-loss torsion impact drilling tool and rock breaking method |
| CN117386314A (en) * | 2023-12-13 | 2024-01-12 | 中国石油集团川庆钻探工程有限公司 | Liquid-driven coiled tubing jar |
| CN117386314B (en) * | 2023-12-13 | 2024-03-08 | 中国石油集团川庆钻探工程有限公司 | Liquid-driven coiled tubing jar |
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