CN114622823A - Novel anti-tripping shell thread structure and screw drill - Google Patents
Novel anti-tripping shell thread structure and screw drill Download PDFInfo
- Publication number
- CN114622823A CN114622823A CN202210125849.6A CN202210125849A CN114622823A CN 114622823 A CN114622823 A CN 114622823A CN 202210125849 A CN202210125849 A CN 202210125849A CN 114622823 A CN114622823 A CN 114622823A
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- Prior art keywords
- pin
- shell
- thread structure
- tripping
- thread
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- 230000000750 progressive effect Effects 0.000 claims description 2
- 238000005553 drilling Methods 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
Images
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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/006—Mechanical motion converting means, e.g. reduction gearings
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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)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a novel anti-tripping shell thread structure and a screw drill, wherein the thread structure is applied to the connection of a universal shaft and a motor, the universal shaft comprises a lower shell arranged outside and a movable hinge joint arranged inside, and the motor comprises an upper shell arranged outside and a rotor joint arranged inside; an inner torque shoulder, an internal thread and a pin unthreaded hole are sequentially arranged on the upper shell from left to right; the lower shell is sequentially provided with an outer torque shoulder, an external thread and a pin threaded hole from left to right, and the pin unthreaded hole and the pin threaded hole are radially arranged and correspond in position; the rotor joint is in threaded connection with the movable hinge joint. The utility model provides a novel anti-tripping shell body thread structure and screw rod drilling tool have improved joint strength, greatly reduced the emergence probability of "dropout", and the cost is lower, improved the efficiency of production, be convenient for popularize and use in the industry.
Description
Technical Field
The invention relates to the technical field of petroleum drilling equipment, in particular to a novel anti-tripping shell thread structure and a screw drilling tool.
Background
The screw drilling tool is a positive displacement downhole power drilling tool which takes drilling fluid as a power source and converts liquid pressure energy into mechanical energy. The screw drilling tool comprises a transmission shaft, a universal shaft, a motor, an anti-drop device, a bypass valve and the like, the service life of the conventional screw drilling tool is generally within 150 hours, a plurality of weak links are provided, tripping occurs sometimes between the universal shaft and the motor, the service life of the product and the drilling safety are seriously affected, and the problem is urgently solved. In order to solve the problem of 'tripping', the method generally adopted in the prior art is to coat anaerobic adhesive, increase the torque of the upper shackle and resist the impact of high-pressure mud and the risk of thread failure caused by various external complex stresses and vibrations by improving the thread torque of the upper shackle.
Disclosure of Invention
In order to solve the technical problem, the purpose of the application is to provide a novel thread structure of an anti-tripping shell and a screw drill.
In order to achieve the purpose of the application, the technical scheme provided by the application is as follows:
first aspect
The application provides a novel anti-tripping shell thread structure which is applied to connection of a universal shaft and a motor, wherein the universal shaft comprises a lower shell arranged outside and a movable hinge joint arranged inside, and the motor comprises an upper shell arranged outside and a rotor joint arranged inside;
an inner torque shoulder, an internal thread and a pin unthreaded hole are sequentially arranged on the upper shell from left to right; the lower shell is sequentially provided with an outer torque shoulder, an external thread and a pin threaded hole from left to right, and the pin unthreaded hole and the pin threaded hole are radially arranged and correspond in position;
the inner thread of the upper shell is connected with the outer thread of the lower shell, the inner torque shoulder is connected with the outer torque shoulder, and the anti-falling pin penetrates through the pin unthreaded hole to be connected with the pin threaded hole, so that the upper shell and the lower shell are fixedly connected by the anti-falling pin in the radial direction;
the rotor joint is in threaded connection with the movable hinge joint.
Wherein, pin unthreaded hole evenly distributed is in on the outer circumference of last casing, the position corresponds ground, pin screw hole evenly distributed is in on the casing down, the quantity of pin unthreaded hole and pin screw hole is 4, correspondingly, the quantity of anticreep pin is 4.
And the distance from the pin unthreaded hole to the pipe end is equal to the distance from the pin threaded hole to the shoulder surface.
The inner torque shoulder and the outer torque shoulder are in interference fit, and the interference magnitude is 0.10 mm.
Second aspect of the invention
The application provides a screw drilling tool, including transmission shaft, cardan shaft, motor, anti-drop device and bypass valve, still include as foretell novel anti-drop casing helicitic texture.
Compared with the prior art, the novel anti-tripping shell thread structure and the screw drilling tool have the advantages that the connection strength is improved, the probability of tripping is greatly reduced, the cost is low, the production efficiency is improved, and the novel anti-tripping shell thread structure and the screw drilling tool are convenient to popularize and use in industry.
Drawings
Fig. 1 is a schematic structural diagram of a novel anti-tripping shell thread structure of the present application:
fig. 2 is a schematic structural diagram of an upper shell end part of the present application:
fig. 3 is a schematic view of the end structure of the housing of the present application:
FIG. 4 is a schematic view of the whole screw drill:
in the figure: 1-upper shell, 2-anti-drop pin, 3-lower shell, 4-rotor joint, 5-movable hinge joint, 6-internal torque shoulder, 7-internal thread, 8-pin threaded hole, 9-external torque shoulder, 10-external thread, 11-pin threaded hole, 21-transmission shaft, 22-universal shaft, 23-motor, 24-anti-drop device, 25-bypass valve, L2-distance between pin threaded hole and shoulder surface, and L1 is distance from pin unthreaded hole to pipe end.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The invention is described in further detail below with reference to the figures and specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when used in this specification the singular forms "a", "an" and/or "the" include "specify the presence of stated features, steps, operations, elements, or modules, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As used herein, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It will be understood that when an element is referred to herein as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Example 1
As shown in fig. 1 to 3, the novel thread structure of the anti-tripping housing provided in this embodiment is applied to the connection between a universal shaft 22 and a motor 23 of a screw drill, where the universal shaft 22 includes a lower housing 3 disposed on the outside and a living hinge 5 disposed on the inside, and the motor 23 includes an upper housing 1 disposed on the outside and a rotor joint 4 disposed on the inside;
an inner torque shoulder 6, an internal thread 7 and a pin unthreaded hole 8 are sequentially arranged on the upper shell 1 from left to right; an outer torque shoulder 9, an external thread 10 and a pin threaded hole 11 are sequentially arranged on the lower shell 3 from left to right, and the pin unthreaded hole 8 and the pin threaded hole 11 are radially arranged and correspond in position;
the internal thread 7 of the upper shell 1 is connected with the external thread 7 of the lower shell 3, the internal torque shoulder 6 is connected with the external torque shoulder 9, and the anti-falling pin 2 penetrates through the pin unthreaded hole 8 to be connected with the pin threaded hole 11, so that the upper shell 1 and the lower shell 3 are fixedly connected by the anti-falling pin 2 in the radial direction;
the rotor joint 4 is in threaded connection with a living hinge joint 5.
In a preferred embodiment, the pin unthreaded holes 8 are uniformly distributed on the outer circumference of the upper shell 1, the pin threaded holes 11 are uniformly distributed on the lower shell 3 correspondingly, the number of the pin unthreaded holes 8 and the number of the pin threaded holes 11 are 4, and correspondingly, the number of the anti-falling pins 2 is 4.
In the preferred embodiment, pin light hole 8 to tube end distance L1 is pin screw hole 11 to shoulder surface distance L2.
In the preferred embodiment, the inner torque shoulder 6 is an interference fit with the outer torque shoulder 9 by 0.10 mm.
Example 2
As shown in fig. 4, the present embodiment provides a progressive cavity drill, which includes a transmission shaft 21, a cardan shaft 22, a motor 23, an anti-drop device 24, a bypass valve 25, and a novel thread structure of the anti-drop casing in embodiment 1.
The technical means not described in detail in the present application are known techniques.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. The novel thread structure of the anti-tripping shell is characterized by being applied to connection of a universal shaft (22) and a motor (23), wherein the universal shaft (22) comprises a lower shell (3) arranged outside and a movable hinge joint (5) arranged inside, and the motor (23) comprises an upper shell (1) arranged outside and a rotor joint (4) arranged inside;
an inner torque shoulder (6), an internal thread (7) and a pin unthreaded hole (8) are sequentially arranged on the upper shell (1) from left to right; an outer torque shoulder (9), an external thread (10) and a pin threaded hole (11) are sequentially arranged on the lower shell (3) from left to right, and the pin unthreaded hole (8) and the pin threaded hole (11) are radially arranged and correspond in position;
the internal thread (7) of the upper shell (1) is connected with the external thread (7) of the lower shell (3), the internal torque shoulder (6) is connected with the external torque shoulder (9), and the anti-falling pin (2) penetrates through the pin unthreaded hole (8) to be connected with the pin threaded hole (11), so that the upper shell (1) and the lower shell (3) are fixedly connected by the anti-falling pin (2) in the radial direction;
the rotor joint (4) is in threaded connection with the movable hinge joint (5).
2. The novel thread structure of the anti-tripping shell is characterized in that pin unthreaded holes (8) are uniformly distributed on the outer circumference of the upper shell (1) and correspondingly, pin threaded holes (11) are uniformly distributed on the lower shell (3), the number of the pin unthreaded holes (8) and the number of the pin threaded holes (11) are 4, and correspondingly, the number of the anti-tripping pins (2) is 4.
3. The novel thread structure of trip-proof housing as claimed in claim 1, wherein the pin clearance hole (8) to tube end distance (L1) is the pin thread hole (11) to shoulder surface distance (L2).
4. The novel thread structure of the anti-trip shell according to claim 1, characterized in that the inner torque shoulder (6) and the outer torque shoulder (9) are in interference fit, and the interference is 0.10 mm.
5. A progressive cavity drill, characterized by comprising a drive shaft (21), a cardan shaft (22), a motor (23), an anti-trip device (24) and a bypass valve (25), further comprising a novel anti-trip housing thread structure according to any one of claims 1-4.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210125849.6A CN114622823A (en) | 2022-02-10 | 2022-02-10 | Novel anti-tripping shell thread structure and screw drill |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210125849.6A CN114622823A (en) | 2022-02-10 | 2022-02-10 | Novel anti-tripping shell thread structure and screw drill |
Publications (1)
Publication Number | Publication Date |
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CN114622823A true CN114622823A (en) | 2022-06-14 |
Family
ID=81897746
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202210125849.6A Pending CN114622823A (en) | 2022-02-10 | 2022-02-10 | Novel anti-tripping shell thread structure and screw drill |
Country Status (1)
Country | Link |
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CN (1) | CN114622823A (en) |
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2022
- 2022-02-10 CN CN202210125849.6A patent/CN114622823A/en active Pending
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