CN107476759A - A kind of wall-thickness screw drilling tools such as high pulling torque series connection motor - Google Patents
A kind of wall-thickness screw drilling tools such as high pulling torque series connection motor Download PDFInfo
- Publication number
- CN107476759A CN107476759A CN201710926243.1A CN201710926243A CN107476759A CN 107476759 A CN107476759 A CN 107476759A CN 201710926243 A CN201710926243 A CN 201710926243A CN 107476759 A CN107476759 A CN 107476759A
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- motor
- assembly
- rotor
- hollow rotor
- stator case
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- 238000005553 drilling Methods 0.000 title claims abstract description 40
- 239000007787 solid Substances 0.000 claims abstract description 12
- 239000012530 fluid Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 230000013011 mating Effects 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 229920001971 elastomer Polymers 0.000 claims description 29
- 239000005060 rubber Substances 0.000 claims description 29
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 4
- 229920000459 Nitrile rubber Polymers 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 230000000712 assembly Effects 0.000 description 6
- 238000000429 assembly Methods 0.000 description 6
- 230000035515 penetration Effects 0.000 description 4
- 239000011435 rock Substances 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000019788 craving Nutrition 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 238000003466 welding 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
-
- 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
- F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
- F03C2/00—Rotary-piston engines
- F03C2/08—Rotary-piston engines of intermeshing-engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The present invention relates to a kind of wall-thickness screw drilling tools such as high pulling torque series connection motor, mainly by by-pass valve assembly, anti-lost assembly, motor assembly, universal axle assembly I, hollow rotor motor assembly, universal axle assembly II, driving-shaft assembly forms, during work, drilling fluid flows to power section, cleaner for high-pressure drilling fluid is from motor inlet into outlet moving process, itself water-horse power is consumed to do work to hollow rotor, drilling liquid pressure can be converted to hollow rotor rotating mechanical energy, a whole set of helicoid hydraulic motor under solid rotor and sleeve rotor mating reaction, reduce sensitiveness of the output speed to the pressure of the drill, relatively single solid rotor motor or sleeve rotor motor, show obvious superiority, at nearly drill bit, coordinate centralizer, realize the function of transmitting high torque, it is adapted to drilling big displacement, directional well, horizontal well.
Description
Technical field
It can be transmitted with wall-thickness screw drilling tool, more particularly to one kind such as a kind of high pulling torque series connection motors the present invention relates to drilling well
The wall-thickness screw drilling tools such as high pulling torque series connection motor.
Background technology
In order to solve the torsion problem of deep-well, extended reach well, horizontal well drilling, drilling well worker starts to seek to bore hard formation
The method for looking for increase helicoid hydraulic motor power and moment of torsion.It was found that 2 sections of motor strings of routine, can reaches the purpose together, in
It is to generate series connection motor, the 1st series connection motor can drive conventional rock bit and diamond drill machine with the rate of penetration of maximum
Head drilling.Although rate of penetration adds, the life-span of rock bit reduces, thus the utility ratio for motor of connecting is very low, 20
There is polycrystalline diamond compact bit the beginning of the eighties in century, many companies develop has list with what rock bit more matched
The low speed and large torque motor of individual power section replaces the high speed low torque motor of early stage, but still runs into the stratum of very difficult brill,
Craving further increase drilling well fluid motor power and rotating speed, then generate middle speed motor, they have required moment of torsion and
Drilling speed drives PDC drill bit.
Increase another rotor stator pair above existing motor, passed therebetween by the high intensity that can bear more high pulling torque
Dynamic structure connection, the motor that is formed connecting is than the value added of former single-unit motor output torque and power, the level with additional motor
Number is about directly proportional to be serially connected 2 existing motors, not only avoid the processing charges of costliness, it is not necessary to special transport
Condition, and at the scene in use, single-unit motor is identical with the mud flow rate that series connection motor needs, except needing, somewhat increase is vertical
Outside pipe pressure, other operating parameters are substantially similar, and therefore, series connection motor is a tool for solving the problems, such as high-power high pulling torque motor
There is the method for economy and practicality usually, the additional power section of a series connection motor contains 2 grades or more of series, so
The moment of torsion and one single 4 grade motor of power ratio of series connection motor are high by 50%, and some designs are connected 2 complete motors,
It can obtain 2 times of output torques.
With the progress of helicoid hydraulic motor manufacturing technology, motor rotor and stator that processing and manufacture lengthen are possibly realized, and are permitted
More producers did whole screw rod and reach moment of torsion to transmit, but the motor for lengthening motor and substituting series connection of whole, can equally obtain
To the helicoid hydraulic motor of high-power and high pulling torque output.Because the rotor for lengthening motor is longer, belong to slender shaft turning product, it is existing
Some deep hole boring machines, deep hole drilling machine, the long pole of processing, linearity and ovality do not reach helicoid hydraulic motor requirement, in order to
Solve the problems, such as high pulling torque and processing and manufacturing problem, propose new-type to wait wall thickness series connection motor with a kind of.
The content of the invention
The purpose of the present invention is：For solve existing screw drilling tool motor fault rate is high, output torque the problems such as, devise
A kind of wall-thickness screw drilling tools such as high pulling torque series connection motor, it can provide high-power, high torque (HT) and higher rate of penetration, and can be in well
Under work long hours, reduced, drill down operator, reduced drilling cost.
To achieve these goals, the present invention uses following technical scheme：A kind of wall-thickness screws such as high pulling torque series connection motor
Drilling tool, it is mainly total by by-pass valve assembly, anti-lost assembly, motor assembly, universal axle assembly I, hollow rotor motor assembly, universal drive shaft
Formed into II, driving-shaft assembly, bypass valve chest, anti-lost joint housing, stator case, universal shaft housing, transmission shaft shell portion
Point by improving dual stage shoulder NC56 button connections, strengthen the bonding strength of housing, part in series by 2 different series motor assembly
Formed with the universal axle assembly of 2 formed objects, the rotor that motor assembly is 3.5 grades coordinates, hollow rotor motor assembly is 2
The rotor of level coordinates, during work, cleaner for high-pressure drilling fluid from motor inlet to outlet it is mobile in, consume itself water-horse power centering idle running
Son acting, drilling liquid pressure can be converted to hollow rotor rotating mechanical energy, a whole set of helicoid hydraulic motor in solid rotor and middle idle running
Sensitiveness of the output speed to the pressure of the drill is reduced under sub- mating reaction.
The universal axle assemblies I of the wall-thickness screw drilling tools such as the high pulling torque series connection motor a kind of and universal axle assembly II it is universal
The box of lower contact, solid rotor and hollow rotor is all NC31 screw buckles on axle, in universal axle assembly I and universal axle assembly II
12 plug pin holes are by welding polishing shaping.
A kind of series connection motor assembly part of the wall-thickness screw drilling tools such as high pulling torque series connection motor is by motor assembly with
The sub- motor assembly that dallies is composed in series, motor assembly by stator case I, etc. wall thickness rubber bushing I, rotor form, hollow rotor
Motor assembly by stator case II, etc. wall thickness rubber bushing II, hollow rotor form, wherein stator case I, rotor, stator case
Body II, hollow rotor by 42CrMo machine-shapings, wait wall thickness rubber bushing I, etc. wall thickness rubber bushing II by hydrogenated nitrile-butadiene rubber
Certain eccentric distance e be present between injection molding, stator case I and rotor, stator case II and hollow rotor.
It is resistance to that the solid rotor and hollow rotor of a kind of wall-thickness screw drilling tools such as the high pulling torque series connection motor are that surface is coated with
Mill, the steel screw rod of resistant material, stator case I, the inner helical surface of stator case II wait wall by extraordinary spiral machine tooling
Thick rubber bushing II is made up of special rubber, has high temperature resistant, rub resistance characteristic, waiting the bush structure of wall thickness can both improve
The heat dispersion of rubber parts, the bond strength of rubber surface and stator case I and stator case II can be increased again, even if rubber
It will not fall glue, chip off-falling under larger frictional force effect, while significantly increase the discharge capacity of fluid.
A kind of hollow rotor motor assembly of the wall-thickness screw drilling tools such as high pulling torque series connection motor adds by special process
Work, due to hollow rotor motor assembly middle part through hole length less than 2000mm, can be processed and realized by common deep hole boring machine,
Reduce the difficulty of manufacture.
The beneficial effects of the invention are as follows：(1) at nearly drill bit, centralizer is coordinated, with the New drilling fluid horse for motor of connecting
Reach, it can be crept into high-power, high torque (HT) and higher rate of penetration；(2) the second part of the invention increase hollow rotor,
To shunt, so as to increase the total displacement of complete machine while motor rotary speed is not increased；(3) a whole set of helicoid hydraulic motor is solid
Sensitiveness of the output speed to the pressure of the drill is reduced under rotor and sleeve rotor mating reaction, is embodied in：Do not add big the pressure of the drill,
Motor rotary speed also will not be very high, and when the pressure of the drill increases, motor rotary speed also will not be very low；(4) present invention considers extension in the design
The factor in motor operations life-span, reduced using series connection motor than conventional motor fault rate, use is more reliable, has reduced, lower brill
Operation, significantly reduces drilling cost, live strong applicability.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the wall-thickness screw drilling tools such as high pulling torque series connection motor.
Fig. 2 is a kind of motor assembly structure chart of the wall-thickness screw drilling tools such as high pulling torque series connection motor.
Fig. 3 is a kind of hollow motor assembly structure chart of the wall-thickness screw drilling tools such as high pulling torque series connection motor.
In figure：1. by-pass valve assembly, 2. anti-lost assemblies, 3. motor assemblies, 4. universal axle assemblies I, 5. hollow rotor motors
Assembly, 6. universal axle assemblies II, 7. driving-shaft assemblies, 20. stator cases I, 21. rotors, 22. grade wall thickness rubber bushings I, 23.
Stator case II, 24. hollow rotors, 25. grade wall thickness rubber bushings II.
Embodiment
The invention will be further described with reference to the accompanying drawings and detailed description.
As shown in figure 1, the present invention uses following technical scheme：A kind of wall-thickness screws such as the hollow motor of high pulling torque series connection bore
Tool, mainly by by-pass valve assembly 1, anti-lost assembly 2, motor assembly 3, universal axle assembly I 4, hollow rotor motor assembly 5, universal
Axle assembly II 6, driving-shaft assembly 7 form, bypass valve chest, anti-lost joint housing, stator case, universal shaft housing, power transmission shaft
Housing parts strengthen the bonding strength of housing by improving dual stage shoulder NC56 button connections, part in series by 2 different series horse
Formed up to the universal axle assembly of assembly and 2 formed objects, the rotor that motor assembly 3 is 3.5 grades coordinates, hollow rotor motor
The rotor that assembly 5 is 2 grades coordinates, during work, cleaner for high-pressure drilling fluid from motor inlet to outlet it is mobile in, consume itself water-horse power
Hollow rotor 24 is done work, drilling liquid pressure can be converted to the rotating mechanical energy of hollow rotor 24, a whole set of helicoid hydraulic motor solid
Sensitiveness of the output speed to the pressure of the drill, universal axle assembly I 4 and universal drive shaft are reduced under rotor 21 and the mating reaction of hollow rotor 24
The box of lower contact, solid rotor 21 and hollow rotor 24 is all NC31 screw buckles on the universal drive shaft of assembly II 6, universal axle assembly
I 4 and universal axle assembly II 6 in 12 plug pin holes pass through weld polishing shaping.
As shown in Figures 2 and 3, motor assembly part is connected by motor assembly 3 and the series connection group of hollow rotor motor assembly 5
Into, motor assembly 3 by stator case I 20, etc. wall thickness rubber bushing I 22, rotor 21 form, hollow rotor motor assembly 5 is by fixed
Sub- housing II 23, etc. wall thickness rubber bushing II 25, hollow rotor 24 form, wherein stator case I 20, rotor 21, stator case
II 23, hollow rotor 24 is by 42CrMo machine-shapings, wait wall thickness rubber bushing I 22, etc. wall thickness rubber bushing II 25 by hydrogenation fourth
Certain bias be present between nitrile rubber injection molding, stator case I 20 and rotor 21, stator case II 23 and hollow rotor 24
Away from e, solid rotor 21 and hollow rotor 24 are that surface is coated with wear-resisting, resistant material steel screw rod, stator case I 20, are determined
The sub- inner helical surface of housing II 23 is waited wall thickness rubber bushing II 25 to be made up of special rubber, had by extraordinary spiral machine tooling
There is high temperature resistant, rub resistance characteristic, wait the bush structure of wall thickness both to have improved the heat dispersion of rubber parts, rubber can be increased again
Surface and the bond strength of stator case I 20 and stator case II 23, even if rubber will not fall under larger frictional force effect
Glue, chip off-falling, while significantly increase the discharge capacity of fluid.
As shown in figure 3, hollow rotor motor assembly 5 is processed by special process, due to hollow rotor 24 middle part it is logical
Hole length can be processed by common deep hole boring machine and be realized, reduce the difficulty of manufacture less than 2000mm.
Claims (5)
1. a kind of wall-thickness screw drilling tools such as high pulling torque series connection motor, mainly total by by-pass valve assembly (1), anti-lost assembly (2), motor
Formed into (3), universal axle assembly I (4), hollow rotor motor assembly (5), universal axle assembly II (6), driving-shaft assembly (7), its
It is characterised by：Bypass valve chest, anti-lost joint housing, stator case, universal shaft housing, transmission shaft shell part pass through improvement pair
Shoulder NC56 button connections, part in series are made up of the motor assembly of 2 different series and the universal axle assembly of 2 formed objects,
The rotor that rotor that motor assembly (3) is 3.5 grades coordinates, hollow rotor motor assembly (5) be 2 grades coordinates, during work, height
Pressure drilling fluid consumes itself water-horse power and hollow rotor (24) is done work, and drilling liquid pressure can be converted to hollow rotor (24) whirler
Tool energy, a whole set of helicoid hydraulic motor reduce output speed to the pressure of the drill under solid rotor (21) and hollow rotor (24) mating reaction
Sensitiveness.
2. a kind of wall-thickness screw drilling tools such as high pulling torque series connection motor according to claim 1, it is characterized in that：Universal axle assembly
The box of lower contact, solid rotor (21) and hollow rotor (24) is all on the universal drive shaft of I (4) and universal axle assembly II (6)
NC31 screw buckles, 12 plug pin holes, which pass through, in universal axle assembly I (4) and universal axle assembly II (6) welds polishing shaping.
3. the wall-thickness screw drilling tool such as a kind of high pulling torque series connection motor according to claims 1, it is characterized in that：Motor of connecting is total
Be composed in series into part by motor assembly (3) and hollow rotor motor assembly (5), motor assembly (3) by stator case I (20),
Deng wall thickness rubber bushing I (22), rotor (21) form, hollow rotor motor assembly (5) by stator case II (23), etc. wall thickness rubber
Glue bushing II (25), wherein middle idle running (24) composition, stator case I (20), rotor (21), stator case II (23), middle idle running
Sub (24) by 42CrMo machine-shapings, wait wall thickness rubber bushing I (22), etc. wall thickness rubber bushing II (25) by hydrogenated nitrile-butadiene rubber
Necessarily inclined between injection molding, stator case I (20) and rotor (21), stator case II (23) and hollow rotor (24) be present
The heart is away from e.
4. the wall-thickness screw drilling tool such as a kind of high pulling torque series connection motor according to claims 1, it is characterized in that：Solid rotor
(21) and hollow rotor (24) is that surface is coated with wear-resisting, resistant material steel screw rod, stator case I (20), stator case
II (23) inner helical surface is waited wall thickness rubber bushing II (25) to be made up of special rubber, had by extraordinary spiral machine tooling
High temperature resistant, rub resistance characteristic, wait the bush structure of wall thickness both to have improved the heat dispersion of rubber parts, rubber table can be increased again
Face and the bond strength of stator case I (20) and stator case II (23), even if rubber will not under larger frictional force effect
Fall glue, chip off-falling, while significantly increase the discharge capacity of fluid.
5. the wall-thickness screw drilling tool such as a kind of high pulling torque series connection motor according to claims 1, it is characterized in that：Hollow rotor horse
Processed up to assembly (5) by special process, due to hollow rotor motor assembly (5) middle part through hole length less than 2000mm,
It can be processed and realized by common deep hole boring machine, reduce the difficulty of manufacture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710926243.1A CN107476759B (en) | 2017-10-06 | 2017-10-06 | Large-torque series motor equal-wall-thickness screw drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710926243.1A CN107476759B (en) | 2017-10-06 | 2017-10-06 | Large-torque series motor equal-wall-thickness screw drilling tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107476759A true CN107476759A (en) | 2017-12-15 |
| CN107476759B CN107476759B (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710926243.1A Active CN107476759B (en) | 2017-10-06 | 2017-10-06 | Large-torque series motor equal-wall-thickness screw drilling tool |
Country Status (1)
| Country | Link |
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| CN (1) | CN107476759B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236559A (en) * | 2018-08-20 | 2019-01-18 | 中海石油(中国)有限公司上海分公司 | A kind of screw motor and mud motor |
| CN110005336A (en) * | 2019-04-09 | 2019-07-12 | 盐城华亚石油机械制造有限公司 | A kind of coal bed gas Special wear-resistant efficient screw drill tool and processing technology |
| CN111188576A (en) * | 2020-03-26 | 2020-05-22 | 成都佳琛石油机械有限公司 | Low-energy-consumption hydraulic oscillator |
| CN111810049A (en) * | 2020-08-04 | 2020-10-23 | 西南石油大学 | Positive displacement fixed-shaft rotary underground power motor |
| CN112585331A (en) * | 2019-07-31 | 2021-03-30 | 查尔斯·阿伯内西·安德森 | Improved torque generator and method of use |
| CN114673444A (en) * | 2022-03-31 | 2022-06-28 | 中国石油大学(北京) | Flexible screw drilling tool and drilling method |
| CN115030654A (en) * | 2022-06-15 | 2022-09-09 | 大庆市佰昂石油科技有限公司 | Adjustable flexible screw drill |
| RU2820666C2 (en) * | 2019-07-31 | 2024-06-07 | АНДЕРСОН, Чарльз Абернети | Device for drilling sections of underground wells used with torque generator (embodiments) and methods of use thereof for controlling toolface (embodiments) |
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|---|---|---|---|---|
| SU1430491A1 (en) * | 1983-03-25 | 1988-10-15 | Всесоюзный Научно-Исследовательский Институт Буровой Техники | Versions of hole-bottom screw-type motor |
| CN2163860Y (en) * | 1993-06-07 | 1994-05-04 | 潍坊市坊子鑫得利石油钻探成套公司 | Screw drill |
| CN201526278U (en) * | 2009-09-22 | 2010-07-14 | 山东陆海石油装备有限公司 | Low-speed large-torque screw drill tool |
| CN203383727U (en) * | 2013-07-17 | 2014-01-08 | 西南石油大学 | Screw drill tool with long service life and high performance |
| CN103806832A (en) * | 2012-11-08 | 2014-05-21 | 中国石油天然气集团公司 | Downhole power metal motor assembly |
-
2017
- 2017-10-06 CN CN201710926243.1A patent/CN107476759B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1430491A1 (en) * | 1983-03-25 | 1988-10-15 | Всесоюзный Научно-Исследовательский Институт Буровой Техники | Versions of hole-bottom screw-type motor |
| CN2163860Y (en) * | 1993-06-07 | 1994-05-04 | 潍坊市坊子鑫得利石油钻探成套公司 | Screw drill |
| CN201526278U (en) * | 2009-09-22 | 2010-07-14 | 山东陆海石油装备有限公司 | Low-speed large-torque screw drill tool |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236559A (en) * | 2018-08-20 | 2019-01-18 | 中海石油(中国)有限公司上海分公司 | A kind of screw motor and mud motor |
| CN110005336A (en) * | 2019-04-09 | 2019-07-12 | 盐城华亚石油机械制造有限公司 | A kind of coal bed gas Special wear-resistant efficient screw drill tool and processing technology |
| CN112585331A (en) * | 2019-07-31 | 2021-03-30 | 查尔斯·阿伯内西·安德森 | Improved torque generator and method of use |
| CN112585331B (en) * | 2019-07-31 | 2022-05-03 | 查尔斯·阿伯内西·安德森 | Improved torque generator and method of use |
| US11982147B2 (en) | 2019-07-31 | 2024-05-14 | Ct Energy Ltd. | Modified torque generator and methods of use |
| RU2820666C2 (en) * | 2019-07-31 | 2024-06-07 | АНДЕРСОН, Чарльз Абернети | Device for drilling sections of underground wells used with torque generator (embodiments) and methods of use thereof for controlling toolface (embodiments) |
| CN111188576A (en) * | 2020-03-26 | 2020-05-22 | 成都佳琛石油机械有限公司 | Low-energy-consumption hydraulic oscillator |
| CN111810049A (en) * | 2020-08-04 | 2020-10-23 | 西南石油大学 | Positive displacement fixed-shaft rotary underground power motor |
| CN114673444A (en) * | 2022-03-31 | 2022-06-28 | 中国石油大学(北京) | Flexible screw drilling tool and drilling method |
| CN114673444B (en) * | 2022-03-31 | 2024-02-13 | 中国石油大学(北京) | Flexible screw drilling tool and drilling method |
| CN115030654A (en) * | 2022-06-15 | 2022-09-09 | 大庆市佰昂石油科技有限公司 | Adjustable flexible screw drill |
| CN115030654B (en) * | 2022-06-15 | 2024-01-12 | 大庆市佰昂石油科技有限公司 | Adjustable flexible screw drilling tool |
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| CN107476759B (en) | 2020-02-07 |
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Effective date of registration: 20201207 Address after: 065000 No. 118 Furuo Road, Longhe Economic Development Zone, Anci District, Langfang City, Hebei Province Patentee after: Orient Energy & Technologies Co.,Ltd. Address before: No. 8 Road, Xindu Xindu District of Chengdu city of Sichuan Province in 610500 Patentee before: SOUTHWEST PETROLEUM University |
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Denomination of invention: A high torque series motor equal wall thickness screw drilling tool Effective date of registration: 20230324 Granted publication date: 20200207 Pledgee: Cangzhou Bank Co.,Ltd. Bazhou Branch Pledgor: ORIENT ENERGY & TECHNOLOGIES Co.,Ltd. Registration number: Y2023980036202 |
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