Column anti-tilt device and anti-tilt method

Abstract

The application discloses a pipe column anti-inclination device and anti-inclination method, which comprises a support, a plurality of hydraulic rods are arranged on the support, the hydraulic rods are annularly distributed with the support shaft center as the center, and a supporting assembly is arranged at the telescopic end of each hydraulic rod; the supporting assembly comprises a supporting table which is arranged vertically in a strip shape, a plurality of balls are embedded on the supporting table from top to bottom, and the balls can rotate universally in the supporting table; a plurality of annular impurity treatment assemblies are arranged at the corresponding balls of the supporting table. The application can effectively reduce the friction between the pipe column body and the positioning structure when the pipe column body is positioned, so that the pipe column body is ensured not to be damaged and the drilling safety is ensured due to excessive wear, and the device can effectively prevent impurities outside the impurity treatment assembly from entering the gap between the supporting assembly and the ball, so that the impurities cannot greatly interfere with the balls.

Description

Technical Field

[0001] This invention relates to the field of drilling equipment technology, and in particular to a tubing anti-tilt device and anti-tilt method. Background Technology

[0002] In surface drilling, well workover, and related fields, to drill wells of different depths, it is usually necessary to install a corresponding number of tubing strings on the drill pipe. The length of these tubing strings is adjusted to drill wells of the appropriate depth. The verticality of the drill pipe and tubing strings is one of the key factors ensuring safe and efficient operation. If the tubing strings tilt during lifting, lowering, or movement, it may not only damage the equipment but also cause serious safety accidents, such as tubing string breakage or derrick collapse. Patent CN110469264B discloses a drill pipe guiding device. Its effect is to adapt to drill pipes of different sizes by adjusting the distance between two sets of guide wheels and adjusting the tilt of the guide wheels, and to clamp and position them to reduce the amount of sway during tripping and excavation, thus ensuring that the drill pipe remains vertical. However, since the drill pipe or tubing does not rotate at a fixed level during drilling, but rather descends or rises while rotating, descending is for drilling and rising is to improve the smoothness of the drill pipe and tubing leaving the well, the guide wheel of the aforementioned patent cannot provide stable support for the ascending or descending tubing. The connection point will generate large friction, which will affect the support safety and is not conducive to preventing the tubing from tilting. Therefore, a tubing anti-tilting device and anti-tilting method are proposed to solve the above problems. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned shortcomings by providing a pipe column anti-tilting device and method, which can provide stable support for a rotating pipe column that is moving upward or downward.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a tubular anti-tilting device, comprising:

[0005] The support is provided with multiple hydraulic rods, which are arranged in a ring around the axis of the support. Each hydraulic rod has a support component at its telescopic end. The support component can cooperate with the hydraulic rod to support and limit the column body located at the axis of the support.

[0006] The support assembly includes a strip-shaped and vertically arranged support platform. Multiple balls are embedded in the support platform from top to bottom. The balls can rotate omnidirectionally within the support platform, and one side of the balls is located outside the support platform and in contact with the column body. An oil injection cavity is opened on the support platform, and the corresponding oil injection cavity of the support platform can be filled with lubricating oil and guide the lubricating oil to be coated onto each ball.

[0007] Multiple annular impurity treatment components are provided, each impurity treatment component is disposed at a corresponding ball on the support platform, and the impurity treatment components are capable of scraping off impurities on the rotating ball.

[0008] The impurity treatment component includes an inclined air outlet, with the air outlet facing the side of the ball away from the support platform. The corresponding air outlet of the impurity treatment component can be used with a blower to guide the airflow out of the air outlet and prevent impurities located outside the impurity treatment component from entering it.

[0009] Furthermore, the support assembly also includes an air inlet on the support platform, which is connected to the air outlet of the blower. The support platform has multiple vertically distributed guide cavities that correspond to each impurity treatment component. The support platform also has multiple connecting cavities, each of which connects to two adjacent guide cavities. The top guide cavity is connected to the air inlet, and each guide cavity is connected to a corresponding air outlet.

[0010] Furthermore, the impurity treatment component includes a ring-shaped shielding ring disposed on the support platform, an air outlet being formed on the shielding ring, and an elastic scraper ring disposed on the shielding ring. The impurity scraping side of the scraper ring contacts the corresponding ball bearing, and the scraper ring is capable of scraping off impurities from the rotating ball bearing.

[0011] Furthermore, a soft sealing ring is provided on the support platform, which is used to seal the gap between the support platform and the ball bearing installation.

[0012] Furthermore, the support is provided with a lifting component, and the moving end of the lifting component is provided with a scraping component. The scraping component is offset from the support component. The lifting component can drive the scraping component to move to the top or bottom of the support component, and the scraping component can scrape off the impurities attached to the column body when it rises or falls.

[0013] Furthermore, the scraping assembly includes a mounting frame disposed at the moving end of the lifting assembly. A telescopic rod is horizontally disposed on the mounting frame. The telescopic rod includes a sleeve and a telescopically disposed rod on the sleeve. The side of the rod away from the sleeve is disposed on the inner wall of the mounting frame. Multiple guide plates corresponding to the corresponding sleeves are installed on the inner wall of the mounting frame. Each sleeve is slidably inserted into the corresponding guide plate. The telescopic rod is offset from the hydraulic rod and the support assembly. A spring is disposed on the inner wall of the mounting frame. The spring surrounds the rod, and the side of the spring away from the mounting frame abuts against the sleeve in the telescopic rod. The spring can push the sleeve to move closer to the column body. A scraper is disposed on the corresponding sleeve of the telescopic rod, and the scraper contacts the column body.

[0014] Furthermore, the support assembly is equipped with a one-way valve, the output end of which is connected to the input end of the oil injection chamber.

[0015] A method for preventing tubular columns from tilting, the method being as follows:

[0016] S1. Place the support outside the column body, with the column body located at the axis of the support, and drive each hydraulic rod to start, so that the support components move synchronously to the surface of each ball contacting the column body.

[0017] S2. Control the check valve to the start state, connect the external lubricating oil to the check valve and deliver it to the oil filling chamber until the lubricating oil lubricates all the balls.

[0018] S3. Based on steps S1 and S2, drive the tubing body to rotate and move downward, or drive the tubing body to rotate and move upward. When the tubing body descends, it is in the drilling state; when the tubing body rises, it is in the recovery state.

[0019] S4. Based on step S3, connect the air inlet to the blower so that the airflow passes through the guide cavity, the connecting cavity and the air outlet in sequence, and is finally discharged from the air outlet. The airflow will create positive pressure at the contact point between the ball and the tube body to prevent impurities from entering the impurity treatment component, while the scraper ring will scrape off the impurities on the rotating ball.

[0020] S5. Based on step S4, the corresponding sleeve of each telescopic rod is compressed by the spring, causing the telescopic rod to stretch. The scraper moves towards the side closer to the tubing body due to the stretching until it contacts it. The scraper scrapes away impurities on the rotating tubing body. At the same time, the lifting assembly drives the installation frame to move up and down. When the tubing body is in the drilling state, the scraper is located on the lower side of the support assembly; when the tubing body is in the retraction state, the scraper is located on the upper side of the support assembly.

[0021] In this invention, by setting the bracket at the corresponding tubing body and driving the support assembly to move closer to the tubing body through each hydraulic rod until each ball contacts the tubing body, the anti-tilting clamping of the tubing body is completed. During this process, the omnidirectional rotatable balls can adapt to the tubing body that moves upward or downward and rotates at the same time. With the lubricating oil applied to each ball, the friction between the tubing body and the positioning structure when it is positioned can be effectively reduced, thereby ensuring that the wear on the tubing body is also effectively reduced, so as to prevent damage to the tubing body and drilling safety.

[0022] In this invention, by setting up an impurity treatment component, impurities can be prevented from entering the gap between the support component and the ball bearing. When impurities splashed during drilling adhere to the side of the ball bearing exposed outside the support component, the component can scrape off the impurities adhering to the ball bearing. The air blowing device guides the airflow out from the air outlet, which can create positive pressure at the impurity treatment component corresponding to the ball bearing. This design can effectively prevent impurities located outside the impurity treatment component from entering the gap between the support component and the ball bearing, thus preventing impurities from causing significant interference to the ball bearing. Attached Figure Description

[0023] Figure 1 This is a perspective view of the present invention;

[0024] Figure 2 This is a schematic diagram of the clamping and positioning of the tubular body in this invention;

[0025] Figure 3 This is a cross-sectional view of the support component in this invention;

[0026] Figure 4 In this invention Figure 3 A partial view of A shown;

[0027] Figure 5 This is a schematic diagram illustrating the arrangement of the ball bearings in this invention;

[0028] Figure 6 This is a schematic diagram of the scraping component in this invention.

[0029] In the picture:

[0030] 1. Bracket; 2. Lifting assembly; 3. Hydraulic rod; 4. Support assembly; 41. Support platform; 42. Oil injection chamber; 43. Air inlet; 44. Guide chamber; 45. Through hole; 5. Ball bearing; 6. Check valve; 7. Impurity treatment assembly; 71. Shielding ring; 72. Scraper ring; 73. Air outlet; 8. Sealing ring; 9. Scraping assembly; 91. Mounting frame; 92. Telescopic rod; 93. Spring; 94. Scraper; 95. Guide plate; 10. Tube column body. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figure 1-6This invention discloses a tubing anti-tilting device, including a support 1 and a tubing body 10. The tubing body 10 is mounted on the drill pipe and rotates and moves downward to drill deeper. It can rotate and move upward to detach from the well. The support 1 is placed on the ground, and the tubing body 10 is located at the axis of the support 1. Multiple hydraulic rods 3 are horizontally mounted on the support 1. Each hydraulic rod 3 is arranged in a ring around the axis of the support 1. Each extension end of the hydraulic rod 3 is provided with a support component 4. The support component 4 can cooperate with the hydraulic rod 3 to support and limit the tubing body 10 located at the axis of the support 1.

[0033] In one embodiment, the support assembly 4 includes a strip-shaped and vertically arranged support platform 41. Each support platform 41 is connected to the telescopic end of a corresponding hydraulic rod 3. Multiple balls 5 are embedded on the support platform 41 from top to bottom. The balls 5 can rotate omnidirectionally within the support platform 41, and one side of the balls 5 is located outside the support platform 41 and in contact with the column body 10. An oil injection cavity 42 is provided on the support platform 41. Lubricating oil can be filled into the corresponding oil injection cavity 42 of the support platform 41 and the lubricating oil can be guided to be coated onto each ball 5. An annular impurity treatment component 7 is provided on the support platform 41 for each ball 5, and the impurity treatment component 7 can scrape off impurities on the rotating balls 5. The impurity treatment component 7 includes an inclined air outlet 73. The air outlet end of the air outlet 73 faces the side of the ball 5 away from the support platform 41. The impurity treatment component 7 can cooperate with a blower to guide the airflow out of the air outlet 73 and prevent impurities located outside the impurity treatment component 7 from entering it.

[0034] In practice, the bracket 1 is set at the corresponding tubing body 10, and the support assembly 4 is driven by each hydraulic rod 3 to move towards the side closer to the tubing body 10 until each ball 5 contacts the tubing body 10, thereby completing the anti-tilting clamping of the tubing body 10. During this process, the omnidirectional rotatable ball 5 can adapt to the tubing body 10 which moves upward or downward and rotates at the same time. With the lubricating oil applied to each ball 5, the friction between the tubing body 10 and the positioning structure when it is positioned can be effectively reduced, thereby ensuring that the wear on the tubing body 10 is also effectively reduced, so as to prevent damage to the tubing body 10 and drilling safety.

[0035] In addition, by setting the impurity treatment component 7, the impurity treatment component 7 can prevent impurities from entering the gap between the support component 4 and the ball 5. When the side of the ball 5 exposed outside the support component 4 is covered with impurities splashed during drilling, it can scrape off the impurities on the ball 5. The blowing device guides the airflow out from the air outlet 73, which can create positive pressure at the impurity treatment component 7 corresponding to the ball 5. This design can effectively prevent impurities located outside the impurity treatment component 7 from entering the gap between the support component 4 and the ball 5, so that impurities will not cause much interference to the ball 5.

[0036] In one embodiment, the support component 4 further includes an air inlet 43 formed on the support platform 41. The air inlet 43 is connected to the air outlet of the blower. The blower is common knowledge in the art, so its specific structure and working principle will not be described in detail here. The support platform 41 has multiple vertically distributed guide cavities 44 that correspond to each impurity treatment component 7. The support platform 41 also has multiple connecting cavities 45. Each connecting cavity 45 is connected to two adjacent guide cavities 44. The top guide cavity 44 is connected to the air inlet 43. Each guide cavity 44 is connected to the corresponding air outlet 73.

[0037] In practice, air is blown into the air inlet 43 by the blowing device. The air passes through the guide cavity 44 and the connecting cavity 45 and enters the air outlet 73. Finally, it is blown out from the air outlet 73 and blows the impurities attached to the ball 5 and some of the impurity treatment components into the impurity treatment components 7 to the outside of the impurity treatment components 7.

[0038] In one embodiment, the impurity treatment component 7 includes a shielding ring 71 mounted on a support platform 41 and in an annular shape. The support platform 41 shields the gap at the connection between the ball 5 and the support platform 41 to prevent impurities from entering directly from there. An air outlet 73 is opened on the shielding ring 71. An elastic scraper ring 72 is mounted on the shielding ring 71, which can scrape off impurities on the rotating ball 5.

[0039] In specific implementation, the air outlet 73 faces the space between the scraper ring 72 and the ball 5, and the ball 5 has a layer of oil film formed by lubricating oil. When the ball 5 is located on the side outside the impurity treatment component 7 and has impurities stuck to it, and the ball 5 is rotating, the outer wall of the scraper ring 72 will blow away most of the impurities on the ball 5. Combined with the airflow blown out from the air outlet 73, a continuous airflow can be formed to blow the impurities that have entered the shielding ring 71 and the impurities scraped off from the ball 5 to the outside of the impurity treatment component 7 for practical use.

[0040] In one embodiment, a soft sealing ring 8 is provided on the support platform 41, which may be a soft silicone ring.

[0041] With this design, the sealing ring 8 can seal the gap between the support platform 41 and the ball bearing 5, thereby further preventing impurities from entering the gap.

[0042] In one embodiment, a lifting assembly 2 is installed on the support 1. The lifting assembly 2 can be a linear module, and a scraping assembly 9 is provided at the moving end of the lifting assembly 2. The scraping assembly 9 is offset from the support assembly 4. The lifting assembly 2 can drive the scraping assembly 9 to move to the top or bottom of the support assembly 4, and cause the scraping assembly 9 to scrape off the impurities attached to the column body 10 when it rises or falls.

[0043] In practice, when the tubing body 10 rotates and descends, the scraping component 9 needs to be moved to the top of the support component 4; when the tubing body 10 rotates and rises, the scraping component 9 needs to be moved to the bottom of the support component 4. This design allows the surface of the tubing body 10 to be treated for impurities before the tubing body 10 comes into contact with the ball bearing 5, thus preventing impurities on the surface of the tubing body 10 before or after drilling from coming into contact with the ball bearing 5, thereby improving the safety of the ball bearing 5.

[0044] In one embodiment, the scraping assembly 9 includes a mounting frame 91 installed at the moving end of the lifting assembly 2. A telescopic rod 92 is horizontally arranged on the mounting frame 91. The telescopic rod 92 includes a sleeve and a telescopic rod disposed on the sleeve. The side of the rod away from the sleeve is installed on the inner wall of the mounting frame 91. A plurality of guide plates 95 corresponding to the corresponding sleeves are installed on the inner wall of the mounting frame 91. Each sleeve is slidably inserted into the corresponding guide plate 95. The telescopic rod 92 is offset from the hydraulic rod 3 and the support assembly 4. A spring 93 is installed on the inner wall of the mounting frame 91. The spring 93 surrounds the rod, and the side of the spring 93 away from the mounting frame 91 abuts against the sleeve in the telescopic rod 92. The spring 93 can push the sleeve to move closer to the column body 10. A scraper 94 is provided on the corresponding sleeve of the telescopic rod 92. The scraper 94 contacts the column body 10.

[0045] In practice, the spring 93 can extend the telescopic rod 92 and make the scraper 94 make very close contact with the column body 10. When the column body 10 rotates and moves up and down, the scraper 94 can effectively scrape off the impurities on it. In addition, since both the hydraulic rod 3 and the telescopic rod 92 can extend and retract, they can be adapted to different sizes of column bodies 10, thereby improving their applicability.

[0046] In one embodiment, a one-way valve 6 is installed on the support assembly 4, and the output end of the one-way valve 6 is connected to the input end of the oil injection chamber 42.

[0047] This design allows lubricating oil to be injected into the oil filling chamber 42 through the one-way valve 6, so that the lubricating oil can lubricate each ball 5.

[0048] It also includes a method for preventing the tubing from tilting, as follows:

[0049] S1. Place the bracket 1 outside the column body 10, with the column body 10 located at the axis of the bracket 1. Drive each hydraulic rod 3 to start, so that the support assembly 4 moves synchronously until each ball 5 contacts the surface of the column body 10.

[0050] S2. Control the check valve 6 to the start state, connect the external lubricating oil to the check valve 6 and deliver it to the oil filling chamber 42 until the lubricating oil lubricates each ball 5.

[0051] S3. Based on steps S1 and S2, drive the tubing body 10 to rotate and move downward, or drive the tubing body 10 to rotate and move upward. When the tubing body 10 descends, it is in the drilling state; when the tubing body 10 rises, it is in the recovery state.

[0052] S4. Based on step S3, the air blower is connected to the air inlet 43, so that the airflow passes through the guide cavity 44, the connecting cavity 45 and the air outlet 73 in sequence, and is finally discharged from the air outlet 73. The airflow will create positive pressure at the contact point between the ball 5 and the column body 10 to prevent impurities from entering the impurity treatment component 7, while the scraper ring 72 will scrape off the impurities on the rotating ball 5.

[0053] S5. Based on step S4, the corresponding sleeve of each telescopic rod 92 is squeezed by the spring 93, causing the telescopic rod 92 to stretch. As a result of the stretching, the scraper 94 moves towards the side closer to the tubing body 10 until it contacts it. The scraper 94 scrapes away the impurities on the rotating tubing body 10. At the same time, the lifting assembly 2 drives the mounting frame 91 to move up and down. When the tubing body 10 is in the drilling state, the scraper 94 is located on the lower side of the support assembly 4. When the tubing body 10 is in the retracted state, the scraper 94 is located on the upper side of the support assembly 4.

[0054] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0055] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0056] Additionally, "multiple" refers to two or more.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tubular anti-tilting device, characterized in that, include: The bracket (1) is provided with multiple hydraulic rods (3). Each hydraulic rod (3) is arranged in a ring around the axis of the bracket (1). Each hydraulic rod (3) is provided with a support component (4) at its extension end. The support component (4) can cooperate with the hydraulic rod (3) to support and limit the column body (10) located at the axis of the bracket (1). The support assembly (4) includes a support platform (41) that is strip-shaped and vertically arranged. Multiple balls (5) are embedded on the support platform (41) from top to bottom. The balls (5) can rotate omnidirectionally within the support platform (41). One side of the balls (5) is located outside the support platform (41) and in contact with the column body (10). An oil injection cavity (42) is provided on the support platform (41). Lubricating oil can be filled into the corresponding oil injection cavity (42) of the support platform (41) and the lubricating oil is guided to be coated onto each ball (5). Multiple annular impurity treatment components (7) are provided, each impurity treatment component (7) is provided at the corresponding ball (5) on the support platform (41), and the impurity treatment component (7) can scrape off impurities on the rotating ball (5); The impurity treatment component (7) includes an inclined air outlet (73), with the air outlet end of the air outlet (73) facing the side of the ball (5) away from the support platform (41). The corresponding air outlet (73) of the impurity treatment component (7) can be used with a blower to guide the airflow out of the air outlet (73) and prevent impurities located outside the impurity treatment component (7) from entering it. The support (1) is provided with a lifting component (2), and the moving end of the lifting component (2) is provided with a scraping component (9). The scraping component (9) is offset from the support component (4). The lifting component (2) can drive the scraping component (9) to move to the top or bottom of the support component (4) and make the scraping component (9) scrape off the impurities attached to the column body (10) when it rises or falls. The scraping assembly (9) includes a mounting frame (91) disposed at the moving end of the lifting assembly (2). A telescopic rod (92) is horizontally disposed on the mounting frame (91). The telescopic rod (92) includes a sleeve and a telescopic rod disposed on the sleeve. The side of the rod away from the sleeve is disposed on the inner wall of the mounting frame (91). Multiple guide plates (95) corresponding to the corresponding sleeves are installed on the inner wall of the mounting frame (91). Each sleeve is slidably inserted into the corresponding guide plate (95). The telescopic rod (92) is offset from the hydraulic rod (3) and the support assembly (4). A spring (93) is provided on the inner wall of the mounting frame (91). The spring (93) is wrapped around the rod body, and the side of the spring (93) away from the mounting frame (91) abuts against the sleeve in the telescopic rod (92). The spring (93) can push the sleeve to move closer to the column body (10). A scraper (94) is provided on the corresponding sleeve of the telescopic rod (92). The scraper (94) contacts the column body (10).

2. The anti-tilting device for the tubing column according to claim 1, characterized in that: The support assembly (4) also includes an air inlet (43) opened on the support platform (41). The air inlet (43) is connected to the air outlet of the blower. The support platform (41) has multiple vertically distributed guide cavities (44) that correspond to each impurity treatment assembly (7). The support platform (41) also has multiple connecting cavities (45). Each connecting cavity (45) is connected to two adjacent guide cavities (44). The top guide cavity (44) is connected to the air inlet (43). Each guide cavity (44) is connected to the corresponding air outlet (73).

3. The anti-tilting device for the tubing column according to claim 1, characterized in that: The impurity treatment component (7) includes a shielding ring (71) arranged on a support platform (41) and in an annular shape. The air outlet (73) is opened on the shielding ring (71). The shielding ring (71) is provided with an elastic scraper ring (72). The impurity scraping side of the scraper ring (72) contacts the corresponding ball (5). The scraper ring (72) can scrape off the impurities on the rotating ball (5).

4. The anti-tilting device for the tubing column according to claim 1, characterized in that: A soft sealing ring (8) is provided on the support platform (41), which is used to seal the gap between the support platform (41) and the ball (5).

5. The anti-tilting device for the tubing column according to claim 1, characterized in that: The support assembly (4) is provided with a one-way valve (6), and the output end of the one-way valve (6) is connected to the input end of the oil injection chamber (42).

6. A method for preventing tubular column tilting, characterized in that: Including a tubular anti-tilting device as described in any one of claims 1-5, the method is as follows: S1. Place the bracket (1) outside the column body (10), and the column body (10) is located at the axis of the bracket (1). Drive each hydraulic rod (3) to start, so that the support assembly (4) moves synchronously until each ball (5) contacts the surface of the column body (10). S2. Control the check valve (6) to the start state, connect the external lubricating oil to the check valve (6) and deliver it to the oil filling chamber (42) until the lubricating oil lubricates each ball (5); S3. Based on steps S1 and S2, drive the tubing body (10) to rotate and move downward, or drive the tubing body (10) to rotate and move upward. When the tubing body (10) descends, it is in the drilling state; when the tubing body (10) rises, it is in the recovery state. S4. Based on step S3, the air blower is connected to the air inlet (43), so that the airflow passes through the guide cavity (44), the connecting cavity (45) and the air outlet (73) in sequence, and finally exits from the air outlet (73). The airflow will cause the ball (5) to form a positive pressure at the contact point with the column body (10) to prevent impurities from entering the impurity treatment component (7), while the scraper ring (72) will scrape off the impurities on the rotating ball (5). S5. Based on step S4, the corresponding sleeve of each telescopic rod (92) is squeezed by the spring (93), causing the telescopic rod (92) to stretch. The scraper (94) moves towards the side closer to the tubing body (10) due to the stretching until it contacts it. The scraper (94) scrapes away the impurities on the rotating tubing body (10). At the same time, the lifting assembly (2) drives the mounting frame (91) to move up and down. When the tubing body (10) is in the drilling state, the scraper (94) is located on the lower side of the support assembly (4). When the tubing body (10) is in the retraction state, the scraper (94) is located on the upper side of the support assembly (4).

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