CN107152237B - A kind of large torque self-balancing low speed turbodrill - Google Patents
A kind of large torque self-balancing low speed turbodrill Download PDFInfo
- Publication number
- CN107152237B CN107152237B CN201710554352.5A CN201710554352A CN107152237B CN 107152237 B CN107152237 B CN 107152237B CN 201710554352 A CN201710554352 A CN 201710554352A CN 107152237 B CN107152237 B CN 107152237B
- Authority
- CN
- China
- Prior art keywords
- drill bit
- screwed connection
- interior
- circle
- mandrel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 52
- 238000005553 drilling Methods 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 229920001971 elastomer Polymers 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000004321 preservation 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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/02—Fluid rotary type drives
-
- 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
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/02—Adaptations for drilling wells
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Earth Drilling (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The present invention relates to a kind of large torque self-balancing low speed turbodrills of unconventional tight stratum drillng operation.It meets the process requirements of unconventional tight stratum drillng operation.Its technical characteristic is: interior turbo blade group trap is on mandrel outer circle upper step axis, nut and the screwed connection of mandrel upper end；Outer turbo blade combination merging inner cylinder intracoelomic cavity, inner cylinder upper end and the screwed connection of top chock lower end, inner cylinder lower end and the screwed connection of step upper end；Transmission shaft upper end and the screwed connection of mandrel lower end, transmission shaft lower end and interior bit upper end screwed connection；Transmission cylinder upper end and the screwed connection of step lower end, transmission cylinder lower end and outer bit upper end screwed connection；Three gear shafts are separately mounted in the middle part of transmission cylinder in three through-holes, and three governor gears are separately mounted on three gear shafts.Interior drill bit of the invention and outer drill bit reversely cut rock stratum, the broken rock torque of autobalance both sides, the absolute drilling speed reduction of interior drill bit and outer drill bit, output torque increase relatively.
Description
Technical field
The present invention relates to a kind of large torque self-balancing low speed turbodrills of unconventional tight stratum drillng operation.
Background technique
As the contradiction between ever-increasing world energy sources demand and existing traditional resource abatement is increasingly sharpened, the whole nation is right
The demand of unconventional petroleum resources is also increasingly urgent to.Compared to traditional petroleum resources, the type and preservation of unconventional petroleum resources
Form is more various, and distribution is more extensive, and potential resources is much larger than conventional gas and oil resource.Unconventional oil and gas reservoir properties are poor,
Porosity, permeability are low, and especially unconventional tight stratum hardness is high, intensity is big, and drillability is poor.The mainstream used both at home and abroad at present
The main helicoid hydraulic motor of mud motor, turbodrill and electronic down-hole equipment.Well of electrician's down-hole equipment due to high temperature and pressure
Lower bad working environments and electric drill pole technology it is immature, it is limited to lead application at present.Helicoid hydraulic motor is widely used, but due to elastomer stator
Property is extremely unstable under high temperature environment, therefore for ultradeep well helicoid hydraulic motor application critical constraints, and the output of helicoid hydraulic motor
Drilling speed is lower, for scleroid unconventional tight stratum using unsatisfactory.And turbodrill has requested rubber material
Limitation, has obtained fabulous application, and possess high output drilling speed and extremely low vibratility under ultradeep well hot environment,
Scleroid unconventional tight stratum drilling well is very suitable to use.
However turbodrill conventional at present also has its own limitation, it is excessively high that turbodrill exports drilling speed, and exports
Torque is very small, results in that its drilling efficiency is low, thus match turbodrill drilling speed and torque it is extremely important.It is current simultaneously
Mud motor all have the defects that one it is common, be exactly its export drilling torque while, drilling tool shell can also bear phase
The reaction torque answered, the reaction torque directly act on upper drilling string by drilling tool shell, directly result in drill string and twist deformation, especially
Its reaction torque in build-up process usually makes the offset of drilling tool face generation certain angle, so that drilling tool face centering is non-
It is often difficult, deflecting difficulty is substantially increased, the time of drillng operation is extended, causes a degree of economic loss.
Based on above-mentioned technical background, the present invention provides a kind of large torque self-balancing low speed turbodrill, guarantee that turbine bores
While tool exports reasonable drilling speed and torque, conventional turbine drilling tool shell is overcome to bear the defect of reaction torque effect.
Summary of the invention
The purpose of the present invention is: the process requirements in order to meet unconventional tight stratum drillng operation provide a kind of big
Torque self-balancing low speed turbodrill.
In order to achieve the above object, the invention adopts the following technical scheme: a kind of large torque self-balancing low speed turbodrill,
Be combined by outer housing, self-aligning bearing a, nut, top chock, outer turbo blade, inner cylinder, the combination of interior turbo blade, mandrel,
Step, self-aligning bearing b, transmission cylinder, governor gear, gear shaft, self-aligning bearing c, thrust bearing a, anti-lost end cap, thrust axis
B, transmission shaft, wearing bush, interior drill bit and outer drill bit is held to constitute；Its structure feature is: outer housing upper end and upper drilling string screw thread connect
It connects；Mandrel outer circle top is set as Step Shaft, and mandrel lower part is circumferentially uniformly arranged cavity space inside and outside three through-hole connection mandrels；It is interior
Turbo blade group trap is on mandrel outer circle upper step axis, nut and the screwed connection of mandrel upper end, turbine leaf in nut compressing
Piece combination；Outer turbo blade, which combines, is placed in inner cylinder intracoelomic cavity, inner cylinder upper end and the screwed connection of top chock lower end, under inner cylinder
End and the screwed connection of step upper end, top chock and step compress outer turbo blade combination；Self-aligning bearing a is mounted on
On top chock outer circle step surface, self-aligning bearing b is mounted on step inner hole step surface；Transmission shaft upper end and mandrel lower end
Screwed connection, transmission shaft lower end and interior bit upper end screwed connection；Gear is set as in the middle part of transmission shaft outer circle；Transmission cylinder upper end and
The screwed connection of step lower end, transmission cylinder lower end and outer bit upper end screwed connection；It is driven in the middle part of tube inner chamber and a ring is set
Step surface, week in the middle part of transmission cylinder are enclosed in connected in star, one circle step surface of transmission tube inner chamber top setting, transmission cylinder outer circle lower part setting one
Inner cavity upper stage terraces and outer circle lower stage terrace are connected to three through-holes are uniformly arranged；Three gear shafts are separately mounted to be driven
In three through-holes in cylinder middle part, three governor gears are separately mounted on three gear shafts, and three governor gears are in transmission cylinder
In annular groove in the middle part of chamber；Self-aligning bearing c is mounted on transmission cylinder outer circle lower stage terrace；Anti-lost end cover lumen upper end setting
One circle raised step, anti-lost end cap and the screwed connection of outer housing lower end；One circle step surface of setting, outer drill bit in the middle part of outer drill bit inner cavity
One circle step surface of outer circle top setting, outer drill bit outer circle lower part and lower end surface are inlaid with cutting tooth；Thrust bearing a is mounted on outer brill
On head outer circle upper stage terrace, thrust bearing b is mounted on outer drill bit inner cavity middle bench face；Interior drill bit lower part is provided with jet stream
Hole connection inner hole and lower end surface, interior drill bit lower end surface are inlaid with cutting tooth, and interior drill bit outer circle is set as Step Shaft；Wearing bush installation
On interior drill bit outer circle Step Shaft, wearing bush is made of wear-resistant material.
It is installed hand, the gear in the middle part of transmission shaft outer circle is intermeshed with three governor gears respectively.
The beneficial effects of the present invention are: (1) interior drill bit of the invention and outer drill bit reversely cut rock stratum, autobalance relatively
The broken rock torque of both sides avoids the harm of traditional mud motor reaction torque effect；(2) present invention utilizes gear-driven
The high drilling speed that conventional turbine drilling tool rotor exports is decomposed into two relatively reversed drilling speeds of interior drill bit and outer drill bit, made by principle
The absolute drilling speed of interior drill bit and outer drill bit reduces, and output torque increases, and is suitable for unconventional fine and close rock high speed and creeps into；(3) this hair
The bright use for avoiding rubber structure part is suitable for Temperature Deep hyperbaric environment；(4) structure of the invention is compact, adapts to underground ring
Border.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of large torque self-balancing low speed turbodrill of the present invention；
Fig. 2 is Figure 1A-A cross-sectional view；
In figure: 1. outer housings, 2. self-aligning bearing a, 3. nuts, 4. top chocks, 5. outer turbo blade combinations, 6. inner cylinders
Body, turbo blade combination, 8. mandrels, 9. steps, 10. self-aligning bearing b, 11. transmission cylinders, 12. governor gears, 13. in 7.
Gear shaft, 14. self-aligning bearing c, 15. thrust bearing a, 16. anti-lost end caps, 17. thrust bearing b, 18. transmission shafts, 19. abrasionproofs
It covers, drill bit, 21. outer drill bits in 20..
Specific embodiment
As shown in Figure 1, a kind of large torque self-balancing low speed turbodrill of the present invention, be by outer housing 1, self-aligning bearing a2,
Nut 3, top chock 4, outer turbo blade combination 5, inner cylinder 6, interior turbo blade combine 7, mandrel 8, step 9, aligning
Bearing b10, transmission cylinder 11, governor gear 12, gear shaft 13, self-aligning bearing c14, thrust bearing a15, anti-lost end cap 16, thrust
Bearing b17, transmission shaft 18, wearing bush 19, interior drill bit 20 and outer drill bit 21 are constituted；Its structure feature is: 1 upper end of outer housing and upper
Portion's drill string screwed connection；8 outer circle top of mandrel is set as Step Shaft, and 8 lower part of mandrel is circumferentially uniformly arranged three through-hole connection cores
Cavity space inside and outside axis 8；Interior turbo blade combines 7 sets on 8 outer circle upper step axis of mandrel, and nut 3 and 8 upper end screw thread of mandrel connect
It connects, nut 3 compresses interior turbo blade combination 7；Outer 5 merging 6 inner cavity of inner cylinder of turbo blade combination, 6 upper end of inner cylinder and upper axis
4 lower end screwed connection of seat, the 9 upper end screwed connection of 6 lower end of inner cylinder and step are held, top chock 4 and step 9 compress
Outer turbo blade combination 5；Self-aligning bearing a2 is mounted on 4 outer circle step surface of top chock, and self-aligning bearing b10 is mounted on lower bearing
On 9 inner hole step surfaces of seat；The 8 lower end screwed connection of 18 upper end of transmission shaft and mandrel, terminal filament on 18 lower end of transmission shaft and interior drill bit 20
Button connection；Gear is set as in the middle part of 18 outer circle of transmission shaft；The 9 lower end screwed connection of 11 upper end of transmission cylinder and step, transmission cylinder
The 21 upper end screwed connection of 11 lower ends and outer drill bit；One ring annular groove is set in the middle part of 11 inner cavity of transmission cylinder, on 11 inner cavity of transmission cylinder
One circle step surface of portion's setting, 11 outer circle lower part of transmission cylinder setting, one circle step surface, 11 middle part of transmission cylinder is circumferential to be uniformly arranged three
Through-hole is connected to inner cavity upper stage terrace and outer circle lower stage terrace；Three gear shafts 13 are separately mounted to 11 three, middle part of transmission cylinder
In through-hole, three governor gears 12 are separately mounted on three gear shafts 13, and three governor gears 12 are in 11 inner cavity of transmission cylinder
In the annular groove at middle part；Self-aligning bearing c14 is mounted on 11 outer circle lower stage terrace of transmission cylinder；Anti-lost 16 inner cavity upper end of end cap
One circle raised step of setting, the 1 lower end screwed connection of anti-lost end cap 16 and outer housing；One circle step of setting in the middle part of outer 21 inner cavity of drill bit
Face, outer 21 outer circle top of drill bit setting, one circle step surface, outer 21 outer circle lower part of drill bit and lower end surface are inlaid with cutting tooth；Thrust axis
It holds a15 to be mounted on outer 21 outer circle upper stage terrace of drill bit, thrust bearing b17 is mounted on outer 21 inner cavity middle bench face of drill bit
On；Interior 20 lower part of drill bit is provided with jet hole connection inner hole and lower end surface, interior 20 lower end surface of drill bit are inlaid with cutting tooth, interior drill bit
20 outer circles are set as Step Shaft；Wearing bush 19 is mounted on interior 20 outer circle Step Shaft of drill bit, and wearing bush 19 is made of wear-resistant material.
As shown in Fig. 2, the gear in the middle part of 18 outer circle of transmission shaft is intermeshed with three governor gears 12 respectively.
A kind of working principle of large torque self-balancing low speed turbodrill of the present invention is: the tripping in present invention to shaft bottom, turn on pump
Circulating fluid, outer turbo blade combination 5 and interior turbo blade combination 7 are acted on by opposite torque, outer turbo blade combination 5
Inner cylinder 6, step 9, transmission cylinder 11, outer drill bit 21 is driven to rotate, interior turbo blade combination 7 driving mandrel 8, transmission shaft
18, interior drill bit 20 rotates；Under the action of governor gear 12, interior drill bit 20 and outer drill bit 21 are reversely revolved according to fixed transmission ratio
Turn, interior drill bit 20 and the reversed rock for cutting wellbore center and periphery, and cutting moment of torque autobalance respectively of outer drill bit 21.
Claims (2)
1. a kind of large torque self-balancing low speed turbodrill is by outer housing (1), self-aligning bearing a (2), nut (3), upper bearing (metal)
Seat (4), outer turbo blade combination (5), inner cylinder (6), interior turbo blade combine (7), mandrel (8), step (9), aligning
It is bearing b (10), transmission cylinder (11), governor gear (12), gear shaft (13), self-aligning bearing c (14), thrust bearing a (15), anti-lost
End cap (16), thrust bearing b (17), transmission shaft (18), wearing bush (19), interior drill bit (20) and outer drill bit (21) are constituted；It is special
Sign is: outer housing (1) upper end and upper drilling string screwed connection；Mandrel (8) outer circle top is set as Step Shaft, under mandrel (8)
Portion is circumferentially uniformly arranged cavity space inside and outside three through-hole connections mandrel (8)；Interior turbo blade combination (7) covers in mandrel (8) outer circle
On upper step axis, nut (3) and mandrel (8) upper end screwed connection, nut (3) compress interior turbo blade combination (7)；Outer turbine
Blade combines (5) and is placed in inner cylinder (6) inner cavity, inner cylinder (6) upper end and top chock (4) lower end screwed connection, inner cylinder (6)
Lower end and step (9) upper end screwed connection, top chock (4) and step (9) compress outer turbo blade combination (5)；
Self-aligning bearing a (2) is mounted on top chock (4) outer circle step surface, and self-aligning bearing b (10) is mounted on step (9) inner hole
On step surface；Transmission shaft (18) upper end and mandrel (8) lower end screwed connection, terminal filament on transmission shaft (18) lower end and interior drill bit (20)
Button connection；Gear is set as in the middle part of transmission shaft (18) outer circle；Transmission cylinder (11) upper end and step (9) lower end screwed connection,
Transmission cylinder (11) lower end and outer drill bit (21) upper end screwed connection；One ring annular groove is set in the middle part of transmission cylinder (11) inner cavity, is passed
Dynamic one circle step surface of cylinder (11) inner cavity top setting, one circle step surface of transmission cylinder (11) outer circle lower part setting, in transmission cylinder (11)
Portion is circumferentially uniformly arranged three through-hole connection inner cavity upper stage terraces and outer circle lower stage terrace；Three gear shafts (13) are pacified respectively
In three through-holes in the middle part of transmission cylinder (11), three governor gears (12) are separately mounted on three gear shafts (13), and three
Governor gear (12) is in the annular groove in the middle part of transmission cylinder (11) inner cavity；Self-aligning bearing c (14) is mounted on transmission cylinder (11)
On outer circle lower stage terrace；Anti-lost one circle raised step of end cap (16) inner cavity upper end setting, anti-lost end cap (16) and outer housing (1)
Lower end screwed connection；One circle step surface of setting in the middle part of outer drill bit (21) inner cavity, outer one circle step of drill bit (21) outer circle top setting
Face, outer drill bit (21) outer circle lower part and lower end surface are inlaid with cutting tooth；Thrust bearing a (15) is mounted in outer drill bit (21) outer circle
On portion's step surface, thrust bearing b (17) is mounted on outer drill bit (21) inner cavity middle bench face；Interior drill bit (20) lower part is provided with
Jet hole connection inner hole and lower end surface, interior drill bit (20) lower end surface are inlaid with cutting tooth, and interior drill bit (20) outer circle is set as step
Axis；Wearing bush (19) is mounted on interior drill bit (20) outer circle Step Shaft, and wearing bush (19) is made of wear-resistant material.
2. large torque self-balancing low speed turbodrill according to claim 1, it is characterized in that: the transmission shaft (18) outer circle
The gear at middle part is intermeshed with three governor gears (12) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710554352.5A CN107152237B (en) | 2017-07-10 | 2017-07-10 | A kind of large torque self-balancing low speed turbodrill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710554352.5A CN107152237B (en) | 2017-07-10 | 2017-07-10 | A kind of large torque self-balancing low speed turbodrill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107152237A CN107152237A (en) | 2017-09-12 |
| CN107152237B true CN107152237B (en) | 2018-12-21 |
Family
ID=59796793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710554352.5A Expired - Fee Related CN107152237B (en) | 2017-07-10 | 2017-07-10 | A kind of large torque self-balancing low speed turbodrill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107152237B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266161B (en) * | 2018-01-05 | 2020-11-06 | 马鞍山铭成科技信息咨询有限公司 | Intelligent drilling device with automatic regulating function and high working efficiency |
| CN108278078B (en) * | 2018-02-05 | 2020-01-24 | 中国石油大学(北京) | Ultrasonic high-frequency impact drilling device |
| CN108194044A (en) * | 2018-02-23 | 2018-06-22 | 中国石油天然气股份有限公司 | Grind shoe |
| CN111997518A (en) * | 2019-05-27 | 2020-11-27 | 奥瑞拓能源科技股份有限公司 | Drilling tool with drill rod not subjected to force spinning |
| 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 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2148857Y (en) * | 1993-03-04 | 1993-12-08 | 石油大学(华东) | Speed variator with single screw arbor |
| CN2202793Y (en) * | 1994-05-10 | 1995-07-05 | 江汉石油学院 | Closing type less gear difference speed reducer under well |
| US6110877A (en) * | 1997-02-27 | 2000-08-29 | Roberts; John W. | Non-halogenated extreme pressure, antiwear lubricant additive |
| US6488103B1 (en) * | 2001-01-03 | 2002-12-03 | Gas Research Institute | Drilling tool and method of using same |
-
2017
- 2017-07-10 CN CN201710554352.5A patent/CN107152237B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN107152237A (en) | 2017-09-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107152237B (en) | A kind of large torque self-balancing low speed turbodrill | |
| CN104612582B (en) | Underground vibrating percussion tool based on screw rod Yu Double helix ball screw | |
| CN104033113B (en) | One is spun helicoid hydraulic motor | |
| CN201386507Y (en) | Rotary blocking type hydraulic power pulse well-drilling tool | |
| CN106894755B (en) | A kind of waterpower pulse formula is spun helicoid hydraulic motor | |
| CN206801458U (en) | The axial impact instrument of speed changing function can be realized based on flexible tooth | |
| CN107120062B (en) | A kind of high speed impact drilling tool | |
| CN112282652B (en) | Eccentric rotary punching reaming tool | |
| CN104895517A (en) | Worm-driven double-valve hydraulic oscillator | |
| CN107461146A (en) | A kind of Yin/Yang rotor all-metal motor helicoid hydraulic motor | |
| CN104120971B (en) | A kind of torsion generator that unidirectional impact is provided | |
| CN104373043A (en) | Turbine oscillator | |
| CN106968598A (en) | A kind of unconventional super tight stratum high pulling torque boring means | |
| CN203835254U (en) | Drive shaft assembly of spiral drilling rig | |
| CN106958429B (en) | A kind of horizontal well pressurization driving tool | |
| CN104632072A (en) | Underground vibration impact tool based on turbine and double helix ball screw | |
| CN102747975B (en) | Deepwater turbine abandoned well cutting device | |
| CN112627721B (en) | Continuous axial impact rock breaking hammer | |
| CN106988700B (en) | A kind of high frequency week pendulum releasing tool | |
| CN107165574B (en) | A kind of block stamp formula impact helicoid hydraulic motor | |
| CN117188950A (en) | Novel high-torque turbine drilling tool | |
| CN117365270A (en) | Novel jet motor coaxial counter-rotating turbine drilling tool | |
| CN205172798U (en) | Turbodrill cavity motor with balanced hub of axial force | |
| CN113047769B (en) | Rotatable self-adaptive impact drilling tool | |
| CN201960181U (en) | Equipment used for processing helical curved surface of cavity of pre-contour stator of Mono drilling rig/pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181221 Termination date: 20200710 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |