CN107780831A - Double frequency axial impact instrument - Google Patents
Double frequency axial impact instrument Download PDFInfo
- Publication number
- CN107780831A CN107780831A CN201711001112.9A CN201711001112A CN107780831A CN 107780831 A CN107780831 A CN 107780831A CN 201711001112 A CN201711001112 A CN 201711001112A CN 107780831 A CN107780831 A CN 107780831A
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- Prior art keywords
- impact
- cam
- roller
- adapter sleeve
- rear end
- Prior art date
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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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. hammers
- E21B4/14—Fluid operated hammers
Abstract
The present invention relates to a kind of double frequency axial impact instrument, including shell body, impact assembly, decelerator, water conservancy diversion assembly.Its technical scheme is：Top connects drill string, and bottom connects helicoid hydraulic motor or turbodrill, impact assembly, decelerator, water conservancy diversion assembly is assembled into internal entirety, then internal entirety is loaded in shell body；Drilling fluid enters shell body, drive turbine high-speed rotation, pass through decelerator, the high-speed rotation of turbine is decelerated to the suitable operating rate of cam, pass through cam and the routing motion of roller, upper impact cylinder and lower impact cylinder, the motion of inner draft tube axial circulation, produce periodically axial mechanical oscillation and waterpower pulse, and enter the mud flow rate generating period change of helicoid hydraulic motor or turbodrill, drill bit produces larger axial impact when compared with the slow-speed of revolution, and relatively small axial impact is produced in higher rotation speed.The present invention can effectively improve drill bit rate of penetration and life-span, improve efficiency of breaking rock.
Description
Technical field
The present invention relates to a kind of double frequency axial impact instrument for oil-gas drilling engineering field.
Background technology
With the continuous exploitation of oil-gas resource, problem encountered is also more and more in drilling process.In drilling well
During, formation hardness and drilling well difficulty are that exponentially form is increased with the increase of well depth, especially deep firm hard formation,
There is the problem that drilling efficiency is low, drill tool life is short, drilling period is long, drilling cost is high, drastically influence oil drilling and opens
The overall efficiency of hair, there is an urgent need to develop efficient rock-breaking boring method, improve the drilling efficiency of deep resource.It is now relatively more effective
Drilling tool be mainly spin drilling tool, its most important part is exactly the impactor described in us.And nowadays, in the world respectively
It is individual country used in impactor species be it is very more, but its operation principle have it is so several：Hydrodynamic impactor, pneumatic type
Impactor, electrodynamic type impactor and mechanism formula impactor, also it is exactly the hybrid impactor of gas-liquid two-phase.Hydrodynamic
Impactor utilizes the effect of drilling fluid, and its utilization to drilling well liquid energy is significantly stronger than other kinds of impactor, and machinery is made
It is reliable with formula impactor structure.
Based on this, in order to effectively improve drill bit rate of penetration and life-span, efficiency of breaking rock is improved, we rush with reference to hydrodynamic
The operation principle of device and mechanism formula impactor is hit, proposes a kind of double frequency axial impact instrument.
The content of the invention
Further to improve the drilling timeliness of middle-deep well, hard formation bit speed, hard slipping formation, reduction is produced into
This, improves the rock breaking efficiency of drill bit, improves the stressing conditions of drill bit and rock, improves drilling life of bit, the invention provides
A kind of double frequency axial impact instrument.
The technical scheme is that：Double frequency axial impact instrument, including shell body, impact assembly, decelerator, water conservancy diversion are total
Into, it is characterised in that：By impact assembly, subtracted to impact assembly, decelerator, water conservancy diversion assembly is before followed successively by by rear in shell body
Fast device, water conservancy diversion assembly are assembled into internal overall then inside is overall out of the loading of shell body rear end shell body；Described shell body
Including upper shell, lower house, external flow guiding cylinder, lower contact, upper shell and lower house are connected through a screw thread, then by external flow guiding cylinder from
Lower house front port loads, and is realized by the keyway of lower casing lower port circumferentially positioned, finally passes through lower house and lower contact
Threaded connection；Described impact assembly include salvage axle sleeve, positioning sleeve, flow guide sleeve, O-ring seal a, upper impact cylinder, salvage axle,
O-ring seal b, lower impact cylinder, O-ring seal c, roller a, O-ring seal a are installed on impact cylinder inwall, O-ring seal c
Lower impact drum outer wall is installed on, circumferentially-spaced 120 ° of roller a is evenly arranged in lower impact cylinder front end, and upper impact cylinder is after axle is salvaged
End loads, and lower impact cylinder is front loaded from axle is salvaged, and then upper impact cylinder and lower impact cylinder are connected through a screw thread, and flow guide sleeve, are determined
Position is covered successively from shaft rear end loading is salvaged, and finally salvages axle sleeve and salvaging axle is connected through a screw thread；Described decelerator includes O-shaped
Sealing ring d, adapter sleeve a, speed reducer housing a, speed reducer housing b, key, planet wheel spindle retainer, central gear shaft, adapter sleeve b,
Adapter sleeve c, cam a, planet wheeling supporting frame output shaft, bearing a, bearing b, bearing c, bearing d, cam b, internal gear, planetary gear,
Planet wheel spindle, O-ring seal d are installed on adapter sleeve a and adapter sleeve c outer walls, and central gear shaft is arranged on into adapter sleeve c rear ends,
And central gear shaft rear end is co-mounted to after bearing c is put into adapter sleeve b, then bearing b and planet wheel spindle retainer are divided
Central gear shaft rear end is not installed to, planet wheel spindle, key and planetary gear is installed on planet wheel spindle retainer rear end face, in the sun
After gear shaft rearmost end installation bearing a, then planet wheeling supporting frame output shaft is installed, by bearing c with being connected after internal gear is installed
Set b assemblys are installed on planet wheeling supporting frame output shaft, and adapter sleeve a front ends then are arranged on into planet wheeling supporting frame output shaft
On, the decelerator internal combination part then assembled by more than is put into speed reducer housing b, respectively from speed reducer housing b front and back ends
Bearing d, speed reducer housing a are installed successively, and cam b, cam a are separately mounted on the adapter sleeve b of decelerator front and back end, most
Axle will be salvaged afterwards to be threadedly coupled with adapter sleeve a rear ends, be decelerated to the high-speed rotation that turbine exports by the effect of decelerator suitable
Close the rotating speed of cam a, cam b work；Described water conservancy diversion assembly include turbine wheel shaft, inner draft tube, spring a, wedge-shaped sleeve, slips,
Hammering block, spring b, turbine, roller b, O-ring seal e, circumferentially-spaced 120 ° of roller b is evenly arranged in inner draft tube rear end, by bullet
Spring a, inner draft tube load from turbine shaft rear end successively, and turbine wheel shaft are connected with adapter sleeve c nose threads, then by wedge-shaped sleeve from
Turbine wheel shaft is front loaded, is then sequentially loaded into slips, hammering block from wedge-shaped sleeve front end（19）, it is O-shaped in the front loaded spring b of slips
Sealing ring e is installed on turbine cylinder inboard wall, is finally threadedly coupled turbine with turbine wheel shaft.
The beneficial effects of the invention are as follows：（1）It is upper impact cylinder and lower impact cylinder, interior by cam and the routing motion of roller
Guide shell axial circulation moves, and produces periodically axial mechanical oscillation and waterpower pulse, can improve efficiency of breaking rock；（2）Pass through
The routing motion of cam and roller, inner draft tube axial circulation movement, into the mud flow rate of helicoid hydraulic motor or turbodrill
Generating period changes, and drill bit drilling speed generating period sexually revises, and drill bit produces larger axial impact when compared with the slow-speed of revolution, compared with
Less axial impact is produced during high rotating speed, the service life of drill bit can be improved.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the sectional view in A-A faces in Fig. 1 of the present invention.
Fig. 3 is the sectional view in B-B faces in Fig. 1 of the present invention.
Fig. 4 is the sectional view in C-C faces in Fig. 1 of the present invention.
Fig. 5 is the sectional view in D-D faces in Fig. 1 of the present invention.
Fig. 6 is the sectional view in E-E faces in Fig. 1 of the present invention.
Fig. 7 is the sectional view in F-F faces in Fig. 1 of the present invention.
Fig. 8 is the sectional view in G-G faces in Fig. 1 of the present invention.
Fig. 9 is the structural representation of inner draft tube in Fig. 1 of the present invention.
Figure 10 is the structural representation of external flow guiding cylinder in Fig. 1 of the present invention.
Figure 11 is the structural representation of slips in Fig. 1 of the present invention.
Figure 12 is the structural representation of turbine in Fig. 1 of the present invention.
Figure 13 is Fig. 1 cams a of the present invention structural representation.
Figure 14 is Fig. 1 cams b of the present invention structural representation.
1. positioning sleeve in figure, 2.O type sealing ring a, 3.O type sealing ring b, 4.O type sealing ring c, 5.O type sealing rings d, 6. connect
Female connector a, 7. speed reducer housing a, 8. speed reducer housing b, 9. keys, 10. planet wheel spindle retainers, 11. central gear shafts, 12. connect
Female connector b, 13. adapter sleeve c, 14. turbine wheel shafts, 15. inner draft tubes, 16. spring a, 17. wedge-shaped sleeves, 18. slips, 19. hammering blocks, 20.
Spring b, 21. external flow guiding cylinders, 22. lower houses, 23. turbines, 24. lower contacts, 25. salvage axle sleeves, 26. flow guide sleeves, impact on 27.
Cylinder, 28. salvage axles, 29. upper shells, 30. times impact cylinders, 31. roller a, 32. cam a, 33. planet wheeling supporting frame output shafts,
34. bearing a, 35. bearing b, 36. bearing c, 37. bearing d, 38. cam b, 39. roller b, 40.O type sealing ring e, 41. internal tooths
Wheel, 42. planet wheel spindles, 43. planetary gears.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings：
Referring to accompanying drawing 1, double frequency axial impact instrument includes shell body, impact assembly, decelerator, water conservancy diversion assembly, in shell body
By rear to impact assembly, decelerator, water conservancy diversion assembly is before followed successively by, impact assembly, decelerator, water conservancy diversion assembly are assembled into internal whole
Body, by internal overall loading shell body；Described shell body includes upper shell 29, lower house 22, external flow guiding cylinder 21, lower contact
24, upper shell 29 and lower house 22 are connected through a screw thread, and are then loaded external flow guiding cylinder 21 from the front port of lower house 22, and pass through
The keyway of the lower port of lower house 22 is realized circumferentially positioned, is finally connected through a screw thread lower house 22 and lower contact 24, realizes outer
The axially position of guide shell 21.
Described impact assembly include salvage axle sleeve 25, positioning sleeve 1, flow guide sleeve 26, O-ring seal a2, upper impact cylinder 27,
Salvaging axle 28, O-ring seal b3, lower impact cylinder 30, O-ring seal c4, roller a31, O-ring seal a2 are installed on impact cylinder
27 inwalls, O-ring seal c4 are installed on the lower outer wall of impact cylinder 30, and circumferentially-spaced 120 ° of roller a31 is evenly arranged in lower impact cylinder
30 front ends, upper impact cylinder 27 load from the rear end of axle 28 is salvaged, and lower impact cylinder 30 is front loaded from axle 28 is salvaged, and passes through external flow guiding cylinder
The keyway of 21 rear ports realizes the circumferentially positioned of lower impact cylinder 30, is realized by the keyway of the lower rear end of impact cylinder 30 and salvages axle 28
Circumferentially positioned, then upper impact cylinder 27 and lower impact cylinder 30 are connected through a screw thread, and flow guide sleeve 26, positioning sleeve 1 are successively from salvaging axle
28 rear ends load, and finally salvage axle sleeve 25 and salvaging axle 28 is connected through a screw thread.
Described decelerator includes O-ring seal d5, adapter sleeve a6, speed reducer housing a7, speed reducer housing b8, key 9, OK
Spider gear shaft retainer 10, central gear shaft 11, adapter sleeve b12, adapter sleeve c13, cam a32, planet wheeling supporting frame output shaft 33,
Bearing a34, bearing b35, bearing c36, bearing d37, cam b38, internal gear 41, planet wheel spindle 42, planetary gear 43, O-shaped sealing
Circle d5 is installed on adapter sleeve a6, adapter sleeve c13 outer walls, and central gear shaft 11 is arranged on into adapter sleeve c13 rear ends, and by bearing
C36 is co-mounted to the rear end of central gear shaft 11 after being put into adapter sleeve b12, then by bearing b35 and planet wheel spindle retainer 10
The rear end of central gear shaft 11 is respectively installed to, planet wheel spindle 42, key 9 and planet are installed on the rear end face of planet wheel spindle retainer 10
Wheel 43, after the rearmost end of central gear shaft 11 installation bearing a34, then planet wheeling supporting frame output shaft 33 is installed, by internal gear 41
Bearing c36 and adapter sleeve b12 assemblys are installed on planet wheeling supporting frame output shaft 33 after installation, then by before adapter sleeve a6
End is arranged on planet wheeling supporting frame output shaft 33, and the decelerator internal combination part then assembled by more than is put into outside decelerator
Shell b8, bearing d37, speed reducer housing a7 be installed successively from speed reducer housing b8 front and back ends respectively, and by cam b38, cam a32
It is separately mounted on the adapter sleeve b12 of decelerator front and back end, will finally salvages axle 28 and be threadedly coupled with adapter sleeve a6 rear ends, and pass through
The effect of decelerator decelerates to the high-speed rotation that turbine 23 exports the rotating speed of suitable cam a32, cam b38 work.
Described water conservancy diversion assembly include turbine wheel shaft 14, inner draft tube 15, spring a16, wedge-shaped sleeve 17, slips 18, hammering block 19,
Spring b20, turbine 23, roller b39, O-ring seal e40, after circumferentially-spaced 120 ° of roller b39 is evenly arranged in inner draft tube 15
End, spring a16, inner draft tube 15 are loaded from the rear end of turbine wheel shaft 14 successively, and by turbine wheel shaft 14 and adapter sleeve c13 nose threads
Connection, then wedge-shaped sleeve 17 is front loaded from turbine wheel shaft 14, wedge-shaped sleeve 17 is realized by the keyway of the front port of inner draft tube 15
It is circumferentially positioned, slips 18, hammering block 19 then are sequentially loaded into from the front end of wedge-shaped sleeve 17, it is O-shaped in the front loaded spring b20 of slips 18
Sealing ring e40 is installed on the cylinder inboard wall of turbine 23, realizes the circumferentially positioned of slips 18 by the keyway of the front port of wedge-shaped sleeve 17, most
Turbine 23 is threadedly coupled with turbine wheel shaft 14 afterwards.
Double frequency axial impact upper tool part connects drill string, and bottom connects helicoid hydraulic motor or turbodrill；During installation, rotary decelerator
Shell b8 and inner draft tube 15, make roller a31, roller b39 respectively positioned at cam a32, cam b38 lowest point, clamping
Axle sleeve 25 is salvaged, the inside that impact assembly, decelerator, water conservancy diversion assembly are assembled is overall from the rear end of upper shell 29 loading shell
In vivo；During work, drilling fluid, into inner draft tube 15, is driven the high-speed rotation of turbine 23, passes through deceleration by external flow guiding cylinder 21
Device, the high-speed rotation of turbine 23 is decelerated to cam a32, cam b38 suitable operating rate, when roller a31 be located just at it is convex
When taking turns a32 minimum point, roller b39 is located at cam b38 peak, after the front end face of inner draft tube 15 just touches hammering block 19
End face, impact synthetically produced instantaneous mechanical impact and pass through decelerator, inner draft tube 15, be transferred to hammering block 19 and shell body, and
Drill bit is transferred to by helicoid hydraulic motor or turbodrill；Cam a38 is moved in roller b39 from cam b38 minimum point most
During high point, inner draft tube 15 moves axially forward, and the entrance that drill-in fluid enters inner draft tube 15 reduces, and passes through turbine 23
Drilling fluid reduce, fluid power impact reduce；Spring a16 ensures that cam b38 contacts with the roller b39 moment, and spring a16 is most
Elastic force during big decrement much smaller than impacting synthetically produced mechanical impact force, by cam a32 and roller a31, cam b38 with
Roller b39 routing motion, upper impact cylinder 27 and lower impact cylinder 30, the movement of the axial circulation of inner draft tube 15, are produced periodic
Axial mechanical oscillation and waterpower pulse, and enter the mud flow rate generating period change of helicoid hydraulic motor or turbodrill,
Drill bit drilling speed generating period sexually revises, and drill bit produces larger axial impact when compared with the slow-speed of revolution, in higher rotation speed produce compared with
Small axial impact.
Claims (3)
1. double frequency axial impact instrument, including shell body, impact assembly, decelerator, water conservancy diversion assembly, it is characterised in that：In shell
Impact assembly, decelerator, water conservancy diversion assembly are assembled into interior by rear to impact assembly, decelerator, water conservancy diversion assembly is before followed successively by vivo
Portion is overall, then will be internal overall out of the loading of shell body rear end shell body；Described shell body includes upper shell（29）, lower house
（22）, external flow guiding cylinder（21）, lower contact（24）, upper shell（29）And lower house（22）It is connected through a screw thread, by external flow guiding cylinder
（21）From lower house（22）Front port loads, the lower port of lower house 22, by lower house（22）And lower contact（24）Connected by screw thread
Connect；Described impact assembly includes salvaging axle sleeve（25）, positioning sleeve（1）, flow guide sleeve（26）, O-ring seal a（2）, upper impact cylinder
（27）, salvage axle（28）, O-ring seal b（3）, lower impact cylinder（30）, O-ring seal c（4）, roller a（31）, O-ring seal a
（2）It is installed on impact cylinder（27）Inwall, O-ring seal c（4）It is installed on lower impact cylinder（30）Outer wall, roller a（31）It is installed on
Lower impact cylinder（30）Front end, upper impact cylinder（27）From salvaging axle（28）Rear end loads, lower impact cylinder（30）From salvaging axle（28）Before
End loads, upper impact cylinder（27）With lower impact cylinder（30）It is connected through a screw thread, flow guide sleeve（26）, positioning sleeve（1）Successively from salvaging
Axle（28）Rear end loads, and salvages axle sleeve（25）With salvaging axle（28）It is connected through a screw thread；Described decelerator includes O-ring seal
d（5）, adapter sleeve a（6）, speed reducer housing a（7）, speed reducer housing b（8）, key（9）, planet wheel spindle retainer（10）, sun tooth
Wheel shaft（11）, adapter sleeve b（12）, adapter sleeve c（13）, cam a（32）, planet wheeling supporting frame output shaft（33）, bearing a（34）、
Bearing b（35）, bearing c（36）, bearing d（37）, cam b（38）, internal gear（41）, planet wheel spindle（42）, planetary gear（43）, O
Type sealing ring d（5）It is installed on adapter sleeve a（6）With adapter sleeve c（13）Outer wall, by central gear shaft（11）Installed in adapter sleeve c
（13）Rear end, by bearing c（36）It is put into adapter sleeve b（12）Central gear shaft is co-mounted to after interior（11）Rear end, by bearing b
（35）With planet wheel spindle retainer（10）It is respectively installed to central gear shaft（11）Rear end, in planet wheel spindle retainer（10）Rear end
Planet wheel spindle is installed on face（42）, key（9）And planetary gear（43）, in central gear shaft（11）Rearmost end installation bearing a（34）Afterwards,
Planet wheeling supporting frame output shaft is installed（33）, by internal gear（41）Again by bearing c after installation（36）With adapter sleeve b（12）Assembly
It is installed to planet wheeling supporting frame output shaft（33）On, by adapter sleeve a（6）Front end is arranged on planet wheeling supporting frame output shaft（33）
On, the decelerator internal combination part assembled by more than is put into speed reducer housing b（8）, respectively from speed reducer housing b（8）It is front and rear
Bearing d is installed at end successively（37）, speed reducer housing a（7）, and by cam b（38）, cam a（32）Before being separately mounted to decelerator
The adapter sleeve b of rear end（12）On, axle will be salvaged（28）With adapter sleeve a（6）Rear end is threadedly coupled, by the effect of decelerator by whirlpool
Wheel（23）The high-speed rotation of output decelerates to suitable cam a（32）, cam b（38）The rotating speed of work；Described water conservancy diversion assembly bag
Include turbine wheel shaft（14）, inner draft tube（15）, spring a（16）, wedge-shaped sleeve（17）, slips（18）, hammering block（19）, spring b（20）, whirlpool
Wheel（23）, roller b（39）, O-ring seal e（40）, roller b（39）It is installed on inner draft tube（15）Rear end, by spring a（16）、
Inner draft tube（15）Successively from turbine wheel shaft（14）Rear end loads, and by turbine wheel shaft（14）With adapter sleeve c（13）Nose threads connect,
By wedge-shaped sleeve（17）From turbine wheel shaft（14）It is front loaded, from wedge-shaped sleeve（17）Front end is sequentially loaded into slips（18）, hammering block（19）,
Slips（18）Front loaded spring b（20）, O-ring seal e（40）It is installed on turbine（23）Cylinder inboard wall, by turbine（23）With whirlpool
Wheel shaft（14）It is connected through a screw thread.
2. double frequency axial impact instrument according to claim 1, it is characterised in that：During installation, roller a（31）, roller b
（39）It is located at cam a respectively（32）, cam b（38）Lowest point；During work, as roller a（31）It is located just at cam a
（32）Lowest point when, roller b（39）Positioned at cam b（38）Peak, inner draft tube（15）Front end face contacts hammering block
（19）Rear end face.
3. double frequency axial impact instrument according to claim 1, it is characterised in that：Shaken for the axial machinery of property performance period
Dynamic and waterpower pulse, roller a（31）, roller b（39）Circumferentially-spaced 120 ° are evenly arranged, spring a（16）Ensure roller b（39）With
Cam b（38）Moment contacts, and spring a（16）Elastic force in maximum compressibility rushes much smaller than synthetically produced machinery is impacted
Hit power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711001112.9A CN107780831B (en) | 2017-10-24 | 2017-10-24 | Double frequency axial impact tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711001112.9A CN107780831B (en) | 2017-10-24 | 2017-10-24 | Double frequency axial impact tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107780831A true CN107780831A (en) | 2018-03-09 |
| CN107780831B CN107780831B (en) | 2019-05-10 |
Family
ID=61433909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711001112.9A Expired - Fee Related CN107780831B (en) | 2017-10-24 | 2017-10-24 | Double frequency axial impact tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107780831B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111364917A (en) * | 2020-04-03 | 2020-07-03 | 西南石油大学 | Drill bit for realizing axial impact function by utilizing turbine and gear |
| CN111946250A (en) * | 2020-07-31 | 2020-11-17 | 中国石油天然气集团有限公司 | Gas-liquid coupling power conversion system for gas drilling |
| CN113266273A (en) * | 2021-07-07 | 2021-08-17 | 西南石油大学 | Turbine-driven near-bit high-frequency axial impact speed-increasing tool |
| CN115613964A (en) * | 2022-10-08 | 2023-01-17 | 盐城市新永佳石油机械制造有限公司 | Spinning screw drill with cam structure |
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| RU2029848C1 (en) * | 1992-06-30 | 1995-02-27 | Анатолий Васильевич Зайцев | In-stope hydraulic power low frequency impactor |
| CN201495985U (en) * | 2009-06-23 | 2010-06-02 | 石成仁 | Mechanical down-the-hole impacter |
| CN104033113A (en) * | 2014-06-27 | 2014-09-10 | 西南石油大学 | Rotary screw drill tool |
| CN106050785A (en) * | 2016-05-23 | 2016-10-26 | 宝鸡市远深石油设备新技术有限公司 | Low-speed large-torque downhole hydraulic motor and operating method thereof |
| CN106639943A (en) * | 2016-09-26 | 2017-05-10 | 西南石油大学 | High-frequency torsion-restoration axial vibration impacting tool |
| CN106761388A (en) * | 2017-03-04 | 2017-05-31 | 蒋培丽 | Rotary impact type drilling tool |
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2017
- 2017-10-24 CN CN201711001112.9A patent/CN107780831B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2029848C1 (en) * | 1992-06-30 | 1995-02-27 | Анатолий Васильевич Зайцев | In-stope hydraulic power low frequency impactor |
| CN201495985U (en) * | 2009-06-23 | 2010-06-02 | 石成仁 | Mechanical down-the-hole impacter |
| CN104033113A (en) * | 2014-06-27 | 2014-09-10 | 西南石油大学 | Rotary screw drill tool |
| CN106050785A (en) * | 2016-05-23 | 2016-10-26 | 宝鸡市远深石油设备新技术有限公司 | Low-speed large-torque downhole hydraulic motor and operating method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111364917A (en) * | 2020-04-03 | 2020-07-03 | 西南石油大学 | Drill bit for realizing axial impact function by utilizing turbine and gear |
| CN111364917B (en) * | 2020-04-03 | 2021-05-25 | 西南石油大学 | Drill bit for realizing axial impact function by utilizing turbine and gear |
| CN111946250A (en) * | 2020-07-31 | 2020-11-17 | 中国石油天然气集团有限公司 | Gas-liquid coupling power conversion system for gas drilling |
| CN113266273A (en) * | 2021-07-07 | 2021-08-17 | 西南石油大学 | Turbine-driven near-bit high-frequency axial impact speed-increasing tool |
| CN115613964A (en) * | 2022-10-08 | 2023-01-17 | 盐城市新永佳石油机械制造有限公司 | Spinning screw drill with cam structure |
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| Publication number | Publication date |
|---|---|
| CN107780831B (en) | 2019-05-10 |
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