Eccentric lifting adjusting device for drill rod

Abstract

The utility model relates to the technical field of drilling equipment, in particular to a drill rod eccentric lifting adjusting device which comprises a driving motor, a rotary clamping groove shaft, a T-shaped lead screw, a universal connecting piece and an eccentric shaft collar. One end of the rotary clamping groove shaft is in transmission connection with the driving motor, and the other end is provided with an open clamping groove; one end of the T-shaped lead screw is connected with the clamping groove in a clamped mode, and the T-shaped lead screw can be driven by rotation of the rotary clamping groove shaft to achieve spiral lifting motion. One end of the universal connecting piece is universally and movably connected with the T-shaped screw rod, and the other end forms a lifting end; the eccentric shaft ring is correspondingly arranged on the periphery of the butt joint ends of the two drill rods in a sleeving mode, and a ring body is connected with the lifting end. When the T-shaped lead screw spirally ascends and descends, the eccentric shaft ring can be driven by the universal connecting piece to ascend and descend, so that the concentric state of the drill rod is adjusted. The drill rod eccentric lifting adjusting device can smoothly and stably achieve lifting motion of the eccentric shaft ring, the eccentric shaft ring is prevented from spinning, and the accurate adjusting effect on the concentricity of the two drill rods is fully guaranteed.

Description

Technical Field

[0001] The present disclosure relates to the technical field of drilling equipment, and in particular, to a drill pipe eccentric lifting and adjusting device. Background Art

[0002] During tripping operations, due to the accumulation of cuttings beds blocking the wellbore, fractures may occur in the formation and well leakage may be caused. The difficulty of operations such as casing running and cementing and wireline logging may also be further increased. Poor wellbore cleaning leads to premature wear of the drill bit and increased friction and torque of the drill string, severely restricting the drilling production cycle and drilling safety. In addition, due to the action of gravity, the drill pipe cannot maintain an ideal concentric state in the wellbore, so the influence of eccentricity on wellbore cleaning needs to be considered.

[0003] In order to observe the wellbore conditions during drilling, various drilling cuttings carrying experimental simulation platforms have been developed at home and abroad to simulate drilling conditions. However, at present, research on devices that can achieve eccentric lifting of drill pipes in the wellbore has not been carried out in drilling experimental platforms. On the other hand, due to the relatively long length of the simulation test section, the wellbore externally connected to the drill pipe is generally set in multiple sections, making it difficult to ensure the concentricity of the installation of each section of the wellbore.

[0004] Therefore, there is an urgent need in the market for a drill pipe eccentric lifting and adjusting device that can be used in a drilling experimental simulation platform to solve the problem that the existing drilling experimental simulation platform cannot achieve eccentric lifting and adjusting of drill pipes in the wellbore. Utility Model Content

[0005] Embodiments of the present disclosure provide a drill pipe eccentric lifting and adjusting device to solve the problem that the existing drilling experimental simulation platform cannot achieve eccentric lifting and adjusting of drill pipes in the wellbore.

[0006] The drill pipe eccentric lifting and adjusting device provided by the embodiments of the present disclosure includes a driving motor, a rotating groove shaft, a T-shaped screw rod, a universal joint, and an eccentric shaft ring;

[0007] One end of the rotating groove shaft is in transmission connection with the driving motor, and the other end is provided with a concave groove;

[0008] One end of the T-shaped screw rod is clamped with the groove and can realize spiral lifting movement under the drive of the rotation of the rotating groove shaft;

[0009] One end of the universal joint is in universal movable connection with the T-shaped screw rod, and the other end forms a lifting end;

[0010] The eccentric shaft ring is correspondingly sleeved on the outer peripheral part of the butt joint end of two drill pipes, and the ring body is connected with the lifting end;

[0011] When the T-shaped screw rod moves in a spiral lifting motion, it can drive the eccentric shaft ring to move up and down through the universal connecting piece, so as to adjust the concentric state of the drill pipe.

[0012] In an implementable embodiment, the T-shaped screw rod includes a horizontal section and a threaded section;

[0013] The horizontal section is correspondingly clamped and inserted into the card slot;

[0014] The threaded section is vertically connected to the middle of the horizontal section, and one end far away from the horizontal section is universally connected to the universal connecting piece;

[0015] Wherein, a thread is provided on the outer peripheral wall of the threaded section;

[0016] The drill pipe eccentric lifting and adjusting device further includes a lifting tube sleeve sleeved on the outer peripheral parts of the rotating card slot shaft and the T-shaped screw rod;

[0017] The lifting tube sleeve has a threaded through hole corresponding to and screwed with the threaded section.

[0018] In an implementable embodiment, the universal connecting piece includes a fixed shaft sleeve and a lifting shaft core;

[0019] The lifting shaft core is movably inserted through the fixed shaft sleeve;

[0020] Wherein, one end of the lifting shaft core is universally and movably connected to the threaded section, and the other end forms a connection end fixedly connected to the eccentric shaft ring;

[0021] The lifting shaft core can reciprocally move up and down along the fixed shaft sleeve under the drive of the T-shaped screw rod.

[0022] In an implementable embodiment, the lifting tube sleeve is installed and connected to the motor bracket of the driving motor through a sealing end cover;

[0023] The sealing end cover has a butt joint section inserted and abutted against the inner wall of the lifting tube sleeve, and a sealing ring is arranged between the butt joint section and the inner wall of the lifting tube sleeve.

[0024] In an implementable embodiment, a mechanical seal is further arranged between the butt joint section and the outer peripheral wall of the rotating card slot shaft.

[0025] In an implementable embodiment, the drill pipe eccentric lifting and adjusting device further includes a transparent wellbore;

[0026] And pressing rings are respectively arranged at the connection ends of two adjacent transparent wellbores, and the pressing rings are respectively butt-jointed and installed with the wellbore collar through tetrafluoroethylene gaskets.

[0027] In an implementable embodiment, an adjusting bottom plate is further arranged below the wellbore collar;

[0028] And the wellbore joint hoop is adjustably installed and connected to the adjusting bottom plate through a plurality of stud bolts.

[0029] In an implementable embodiment, a temperature detector for detecting the internal temperature of the wellbore joint hoop is further correspondingly arranged on the side part of the wellbore joint hoop.

[0030] In an implementable embodiment, a pressure detector for detecting the internal pressure of the wellbore joint hoop is further correspondingly arranged at the bottom of the wellbore joint hoop.

[0031] In an implementable embodiment, first docking parts and second docking parts are respectively arranged at the docking ends of two adjacent drill pipes.

[0032] And the eccentric shaft rings are respectively sleeved on the outer peripheral parts of the first docking part and the second docking part.

[0033] The technical solution provided by the embodiment of the present disclosure has the following advantages compared with the prior art:

[0034] For the drill pipe eccentric lifting and adjusting device provided by the embodiment of the present disclosure, when it is necessary to adjust the concentricity of the docking of two drill pipes, only the driving motor needs to be correspondingly started, and the driving motor can correspondingly drive the rotating groove shaft to rotate synchronously. In this way, the T-shaped lead screw whose one end is clamped with the groove in the rotating groove shaft can perform a spiral lifting movement under the rotation of the rotating groove shaft, and the universal joint connected to one end of the T-shaped lead screw in a universal manner can drive the eccentric shaft ring to lift under the spiral lifting action of the T-shaped lead screw, so as to realize the function of lifting and eccentrically adjusting the concentric state of the two drill pipes.

[0035] The drill pipe eccentric lifting and adjusting device finally realizes the function of driving the lifting and eccentric adjustment of the concentricity of the two drill pipes through the transmission mode of "driving motor rotates → rotating groove shaft rotates → T-shaped lead screw performs spiral lifting movement → universal joint lifts → eccentric shaft ring lifts", and there is a clearance space between multiple transmission parts, which can smoothly and stably realize the only lifting movement of the eccentric shaft ring and avoid the self-rotation of the eccentric shaft ring, fully ensuring the accurate adjustment effect of the concentricity of the two drill pipes.

[0036] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it used to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. Description of the Drawings

[0037] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features, and advantages of the exemplary embodiments of the present disclosure will become readily understandable. In the drawings, several embodiments of the present disclosure are shown in an exemplary rather than restrictive manner, where:

[0038] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0039] Figure 1 A three-dimensional cross-sectional view of the drill pipe eccentric lifting and adjusting device provided by an embodiment of the present disclosure is shown;

[0040] Figure 2 A vertical cross-sectional view of the drill pipe eccentric lifting and adjusting device provided by an embodiment of the present disclosure is shown;

[0041] Figure 3 A three-dimensional view of the drill pipe eccentric lifting and adjusting device provided by an embodiment of the present disclosure is shown;

[0042] Figure 4 A three-dimensional view of another perspective of the drill pipe eccentric lifting and adjusting device provided by an embodiment of the present disclosure is shown.

[0043] Explanation of reference numerals in the figure: 1. Driving motor; 2. Rotating card slot shaft; 21. Lifting tube; 22. Sealing end cover; 221. Sealing ring; 222. Mechanical seal; 3. T-shaped screw rod; 31. Horizontal section; 32. Thread section; 4. Universal joint; 41. Fixed shaft sleeve; 42. Lifting shaft core; 5. Eccentric shaft ring; 6. Drill pipe; 61. First docking member; 62. Second docking member; 7. Transparent wellbore; 71. Pressure ring; 72. Wellbore coupling; 73. Adjusting bottom plate; 74. Temperature detector; 75. Pressure detector. Detailed implementation manners

[0044] To make the objectives, features, and advantages of the present disclosure more obvious and understandable, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present disclosure.

[0045] The embodiments of the present disclosure will be described in detail below with reference to the drawings.

[0046] Combined with Figure 1 and Figure 2As shown in the figure, an embodiment of the present disclosure provides a drill pipe eccentric lifting and adjusting device, which includes a driving motor 1, a rotating groove shaft 2, a T-shaped screw rod 3, a universal connecting piece 4 and an eccentric shaft ring 5; one end of the rotating groove shaft 2 is in transmission connection with the driving motor 1, and an open groove is provided at the other end; one end of the T-shaped screw rod 3 is clamped with the groove and can realize spiral lifting movement under the drive of the rotation of the rotating groove shaft 2; one end of the universal connecting piece 4 is in universal movable connection with the T-shaped screw rod 3, and the other end forms a lifting end; the eccentric shaft ring 5 is correspondingly sleeved on the outer peripheral part of the butt joint end of two drill pipes 6, and the ring body is connected with the lifting end; wherein, when the T-shaped screw rod 3 makes spiral lifting movement, it can drive the eccentric shaft ring 5 to make lifting movement through the universal connecting piece 4, so as to adjust the concentric state of the drill pipe 6.

[0047] The drill pipe eccentric lifting and adjusting device can be but is not limited to being applied to a drilling experiment simulation platform, and the use process will be described by taking this as an example.

[0048] When the drill pipe eccentric lifting and adjusting device is specifically used, the eccentric shaft ring 5 can be correspondingly sleeved on the outer peripheral part of the butt joint end of two drill pipes 6, and when it is necessary to adjust the concentricity of the butt joint of the two drill pipes 6, only the driving motor 1 needs to be correspondingly started, and the driving motor 1 can correspondingly drive the rotating groove shaft 2 to rotate synchronously. In this way, the T-shaped screw rod 3 clamped with the groove in the rotating groove shaft 2 can make spiral lifting movement under the rotation of the rotating groove shaft 2, and the universal connecting piece 4 in universal movable connection with one end of the T-shaped screw rod 3 can drive the eccentric shaft ring 5 to make lifting movement under the spiral lifting action of the T-shaped screw rod 3, so as to realize the function of lifting and eccentrically adjusting the concentric state of the two drill pipes 6.

[0049] The drill pipe eccentric lifting and adjusting device finally realizes the function of driving the lifting and eccentric adjustment of the concentricity of the two drill pipes 6 through the transmission mode of "driving motor 1 rotates → rotating groove shaft 2 rotates → T-shaped screw rod 3 makes spiral lifting movement → universal connecting piece 4 makes lifting movement → eccentric shaft ring 5 makes lifting movement". And there is a clearance space between multiple transmission parts, which can smoothly and stably realize the only lifting movement of the eccentric shaft ring 5 and avoid the self-rotation of the eccentric shaft ring 5, fully ensuring the accurate adjustment effect of the concentricity of the two drill pipes 6.

[0050] In addition, the up and down spiral lifting movement of the T-shaped screw rod 3 in the drill pipe eccentric lifting and adjusting device is limited by mechanical limit, and the lifting distance is fixed. Therefore, the lifting and eccentric position range of the connected eccentric shaft ring 5 is also fixed. The highest position of the center of the eccentric shaft ring 5 is the center of the transparent wellbore 7, and the lowest position is that the outer circle of the eccentric shaft ring 5 just touches the bottom of the transparent wellbore 7. Therefore, this kind of lifting and eccentricity is 0-100% eccentricity adjustment.

[0051] In an implementable embodiment, the T-shaped lead screw 3 includes a horizontal section 31 and a threaded section 32; the horizontal section 31 is correspondingly clamped and inserted into the card slot; the threaded section 32 is vertically connected to the middle of the horizontal section 31, and one end far from the horizontal section 31 is universally connected to the universal joint 4;

[0052] Wherein, a thread is provided on the outer peripheral wall of the threaded section 32; the drill pipe eccentric lifting and adjusting device further includes a lifting tube 21 sleeved on the outer peripheral parts of the rotating card slot shaft 2 and the T-shaped lead screw 3; the lifting tube 21 has a threaded through hole that is correspondingly screwed and matched with the threaded section 32.

[0053] Specifically, in combination with Figure 2 For further detailed description, the T-shaped lead screw 3 is specifically set to include a horizontal section 31 and a threaded section 32, and the horizontal section 31 can be correspondingly clamped and inserted into the card slot in the rotating card slot shaft 2, and the lifting tube 21 has a threaded through hole that is correspondingly screwed and matched with the threaded section 32. In this way, when the T-shaped lead screw 3 is subjected to the rotational action transmitted by the rotating card slot shaft 2, the T-shaped lead screw 3 can perform a helical lifting and lowering movement relative to the rotating card slot shaft 2 along the depth direction of the card slot, and the lifting tube 21 will only perform a separate lifting and lowering movement accordingly.

[0054] In addition, the threaded section 32 is vertically connected to the middle of the horizontal section 31, and one end far from the horizontal section 31 is universally connected to the universal joint 4. In this way, when the helical lifting and lowering movement of the T-shaped lead screw 3 is transmitted to the universal joint 4, the rotational movement can be "filtered" by the universal connection structure, and only the lifting and lowering movement is retained, so as to ensure that the universal joint 4 can only drive the eccentric shaft ring 5 to perform a lifting and lowering movement.

[0055] The above specific setting method of the T-shaped lead screw 3 has the beneficial effects of simple structure and being able to stably realize the specific transmission requirements of each component.

[0056] In an implementable embodiment, the universal joint 4 includes a fixed shaft sleeve 41 and a lifting shaft core 42; the lifting shaft core 42 is movably inserted through the fixed shaft sleeve 41; wherein, one end of the lifting shaft core 42 is universally and movably connected to the threaded section 32, and the other end forms a connection end fixedly connected to the eccentric shaft ring 5; the lifting shaft core 42 can reciprocally lift and lower along the fixed shaft sleeve 41 under the drive of the T-shaped lead screw 3.

[0057] Specifically, in combination with Figure 2For further detailed description, the universal joint 4 is specifically arranged to include a fixed sleeve 41 and a lifting shaft core 42. The lifting shaft core 42 is movably inserted into the fixed sleeve 41. One end of the lifting shaft core 42 is universally and movably connected to the threaded section 32, and the other end is fixedly connected to the eccentric shaft ring 5. In this way, when the lifting shaft core 42 is driven by the spiral lifting transmitted by the T-shaped lead screw 3, the universal connection structure at one end of the lifting shaft core 42 will correspondingly filter out the rotational action in the "spiral lifting driving action" and only retain the lifting movement. In this way, the lifting shaft core 42 can reciprocally lift in the fixed sleeve 41 along with the T-shaped lead screw 3, thereby driving the eccentric shaft ring 5 to reciprocally lift and perform the function of adjusting the concentricity of the two drill pipes 6.

[0058] The above specific arrangement method of the universal joint 4 has the beneficial effects of simple structure, being able to effectively "filter" the rotation transmitted by the T-shaped lead screw 3, and stably driving the eccentric shaft ring 5 to reciprocally lift.

[0059] In an implementable embodiment, the lifting tube 21 is installed and connected to the motor bracket of the driving motor 1 through a sealing end cover 22; the sealing end cover 22 has a docking section inserted and abutted against the inner wall of the lifting tube 21, and a sealing ring 221 is arranged between the docking section and the inner wall of the lifting tube 21.

[0060] Specifically, combined with Figure 2 For further detailed description, the top end of the lifting tube 21 is installed and connected to the motor bracket of the driving motor 1 through the sealing end cover 22, which can ensure the stable pressure inside the lifting tube 21 and avoid the problem of pressure relief at the connection between the lifting tube 21 and the motor bracket; moreover, the sealing end cover 22 has a docking section inserted and abutted against the inner wall of the lifting tube 21, and a sealing ring 221 is arranged between the docking section and the inner wall of the lifting tube 21, which can further ensure the sealing performance between the sealing end cover 22 and the lifting tube 21 through the sealing ring 221.

[0061] The above specific installation and arrangement method of the lifting tube 21 has the beneficial effects of simple structure and being able to fully ensure the sealing reliability between the lifting tube 21, the motor bracket and the sealing end cover 22.

[0062] In an implementable embodiment, a mechanical seal 222 is further arranged between the docking section and the outer peripheral wall of the rotary clamping groove shaft 2.

[0063] Specifically, combined with Figure 2 For further detailed description, a mechanical seal 222 is further arranged between the docking section of the sealing end cover 22 and the outer peripheral wall of the rotary clamping groove shaft 2, which can ensure the sealing reliability between the sealing end cover 22 and the rotary clamping groove shaft 2 through the mechanical seal 222 and fully ensure the stable pressure inside the lifting tube 21.

[0064] In an implementable embodiment, the drill pipe eccentric lifting and adjusting device further includes a transparent wellbore 7; and pressure rings 71 are respectively arranged at the connection ends of two adjacent transparent wellbores 7, and the pressure rings 71 are respectively butt - installed with the wellbore collar 72 through tetrafluoro gaskets.

[0065] Specifically, in combination with Figure 2 and Figure 3 For further detailed description, the transparent wellbore 7 is provided to facilitate observing the real - time working state of the drill pipe 6 when the drilling experiment simulation platform is working. And pressure rings 71 are respectively arranged at the connection ends of two transparent wellbores 7, and the pressure rings 71 are respectively butt - installed with the wellbore collar 72 through tetrafluoro gaskets. This can fully ensure the installation sealing stability between the transparent wellbore 7 and the wellbore collar 72, and avoid the problem of pressure relief and leakage at the butt joint of the transparent wellbore 7.

[0066] In an implementable embodiment, an adjusting bottom plate 73 is further arranged below the wellbore collar 72; and the wellbore collar 72 is adjustably installed and connected to the adjusting bottom plate 73 through a plurality of double - headed bolts.

[0067] Specifically, in combination with Figure 2 and Figure 3 For further detailed description, an adjusting bottom plate 73 is arranged below the wellbore collar 72, and the wellbore collar 72 is adjustably installed and connected to the adjusting bottom plate 73 through a plurality of double - headed bolts. In this way, when initially installing and adjusting the relative position of the wellbore collar 72, the effective installation length of a plurality of double - headed bolts can be adjusted to correspondingly adjust the installation height and installation levelness of the wellbore collar 72 relative to the adjusting bottom plate 73, so as to ensure the concentricity when a plurality of transparent wellbores 7 are butt - installed in sequence.

[0068] In an implementable embodiment, a temperature detector 74 for detecting the internal temperature of the wellbore collar 72 is correspondingly arranged on the side of the wellbore collar 72.

[0069] Specifically, in combination with Figure 4 For further detailed description, a temperature detector 74 for detecting the internal temperature of the wellbore collar 72 is correspondingly arranged on the side of the wellbore collar 72. In this way, the working temperature information in the transparent wellbore 7 can be detected in real time by the temperature detector 74, so as to facilitate the experimenters to understand and collect the temperature change situation of the drilling experiment simulation platform.

[0070] In an implementable embodiment, a pressure detector 75 for detecting the internal pressure of the wellbore collar 72 is correspondingly arranged at the bottom of the wellbore collar 72.

[0071] Specifically, in combination with Figure 1 and Figure 3For further detailed description, a pressure detector 75 for detecting the internal pressure of the wellbore collar 72 is also correspondingly provided at the bottom of the wellbore collar 72, and the pressure detector 75 can be connected to the inside of the wellbore collar 72 through external threads, so that the working pressure information in the transparent wellbore 7 can be detected in real time by the pressure detector 75, facilitating the experimenters to understand and collect the pressure change of the drilling experiment simulation platform.

[0072] In an implementable embodiment, a first docking member 61 and a second docking member 62 are respectively provided at the docking ends of two adjacent drill pipes 6; and the eccentric shaft ring 5 is respectively sleeved on the outer circumferences of the first docking member 61 and the second docking member 62.

[0073] Specifically, in combination with Figure 2 For further detailed description, the docking ends of two adjacent drill pipes 6 are installed and connected through the docking member 61, and the eccentric shaft ring 5 is respectively sleeved on the outer circumferences of the two docking members 61. In this way, when the eccentric shaft ring 5 is driven by the driving motor 1 to move up and down, the eccentric shaft ring 5 can push and pull the docking member 61 in the vertical direction, realizing the function of accurately adjusting the concentricity of the two drill pipes 6.

[0074] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present disclosure, "a plurality" means two or more, unless otherwise specifically defined.

[0075] As described above, the above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should be covered by the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A drill rod eccentric lifting and adjusting device, characterized in that: include: A driving motor (1); A rotating slot shaft (2), one end of which is drivingly connected to the driving motor (1) and the other end of which is provided with an open slot; A T-shaped screw rod (3) has one end engaged with the slot and is capable of realizing spiral lifting motion when driven by the rotation of the rotating slot shaft (2); A universal connector (4), one end of which is universally movably connected to the T-shaped screw rod (3), and the other end of which forms a lifting end; An eccentric shaft ring (5) is correspondingly sleeved on the outer periphery of the butt ends of the two drill rods (6), and the ring body is connected to the lifting end; When the T-shaped screw rod (3) is spirally lifted and lowered, the eccentric shaft ring (5) can be driven to move up and down through the universal joint (4) to adjust the concentric state of the drill rod (6).

2. The drill rod eccentric lifting and adjusting device according to claim 1, characterized in that: The T-shaped screw rod (3) comprises: The transverse section (31) is correspondingly plugged into the card slot; A threaded section (32) vertically connected to the middle of the transverse section (31), and an end away from the transverse section (31) is universally connected to the universal connector (4); Wherein, the outer peripheral wall of the threaded section (32) is provided with threads; The drill rod eccentric lifting and adjusting device further comprises a lifting tube (21) sleeved on the outer periphery of the rotating slot shaft (2) and the T-shaped screw rod (3); The lifting tube (21) has a threaded through hole which is threadedly matched with the threaded section (32).

3. The drill rod eccentric lifting and adjusting device according to claim 2, characterized in that: The universal joint (4) comprises a fixed shaft sleeve (41) and a lifting shaft core (42); The lifting shaft core (42) is movably mounted on the fixed shaft sleeve (41); One end of the lifting shaft core (42) is universally movably connected to the threaded section (32), and the other end forms a connection end fixedly connected to the eccentric shaft ring (5); The lifting shaft core (42) can be driven by the T-shaped screw rod (3) to perform reciprocating lifting and lowering movements along the fixed shaft sleeve (41).

4. The drill rod eccentric lifting and adjusting device according to claim 2, characterized in that: The lifting tube (21) is installed and connected to the motor bracket of the driving motor (1) through a sealing end cover (22); The sealing end cover (22) has a docking section inserted and abutting against the inner wall of the lifting tube (21), and a sealing ring (221) is arranged between the docking section and the inner wall of the lifting tube (21).

5. The drill rod eccentric lifting and adjusting device according to claim 4, characterized in that: A mechanical seal (222) is also provided between the docking section and the outer peripheral wall of the rotating slot shaft (2).

6. The drill rod eccentric lifting and adjusting device according to claim 1, characterized in that: The drill rod eccentric lifting and adjusting device also includes a transparent wellbore (7); The connecting ends of two adjacent transparent shafts (7) are respectively provided with a pressure ring (71), and the pressure ring (71) is butt-jointed and installed with the shaft collar (72) via a polytetrafluoroethylene gasket.

7. The drill rod eccentric lifting and adjusting device according to claim 6, characterized in that: An adjusting bottom plate (73) is also provided below the shaft collar (72); The shaft collar (72) is adjustably connected to the adjustment base plate (73) via a plurality of stud bolts.

8. The drill rod eccentric lifting and adjusting device according to claim 6, characterized in that: A temperature detector (74) for detecting the internal temperature of the wellbore joint collar (72) is also correspondingly arranged on the side of the wellbore joint collar (72).

9. The drill rod eccentric lifting and adjusting device according to claim 6, characterized in that: A pressure detector (75) for detecting the internal pressure of the wellbore joint collar (72) is also provided at the bottom of the wellbore joint collar (72).

10. The drill rod eccentric lifting and adjusting device according to claim 1, characterized in that: The butt joint ends of two adjacent drill rods (6) are respectively provided with a first butt joint piece (61) and a second butt joint piece (62); The eccentric shaft ring (5) is respectively and correspondingly mounted on the outer periphery of the first docking piece (61) and the second docking piece (62).

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