Deep coal bed gas horizontal well reservoir unblocking device and unblocking method

Abstract

The invention provides a deep coal bed gas horizontal well reservoir unblocking device and unblocking method, and belongs to the field of gas field exploitation. The moving unit is erected at the lower end of the positioning frame and driven to rotate; the moving unit comprises a plurality of walking assemblies which are arranged in the circumferential direction and extend outwards. The rotating plate is erected below the moving unit and is driven to rotate; the adjusting driving part is fixedly arranged at the bottom of the rotating plate; a circular groove is formed in the eccentric position of the plate surface of the adjusting plate; the groove wall of the circular groove and the adjusting driving piece are connected with a plurality of elastic pieces in the circumferential direction. The gear ring driving assembly is rotationally arranged on the adjusting plate; the moving gear assemblies are driven by the air cylinder assembly to move in the circle center direction of the rotating plate; the plurality of moving gear assemblies are engaged with the gear ring driving assembly at a certain position; and the plurality of acid liquor supply units are fixedly erected below the plurality of movable gear assemblies respectively. The device can quickly position and enter the deep coal bed gas horizontal well, and the irregular blocking state in the well is effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of gas field exploitation, and in particular to a deep coalbed methane horizontal well reservoir unblocking device and unblocking method. Background Art

[0002] Deep coalbed methane horizontal well reservoirs have a series of unique characteristics and complexities. Compared with shallow coal reservoirs, deep coalbed methane reservoirs usually face higher ground stress and formation temperature, which leads to a decrease in the adsorption capacity of coalbed methane, but is conducive to the desorption of methane. At the same time, the permeability of deep reservoirs is relatively low, which is mainly due to the high degree of diagenesis and complex pore types of deep reservoirs. In addition, as the burial depth increases, the pores and cracks of the coal seams are compressed and the reservoir porosity decreases. This lower permeability has a significant impact on the migration and accumulation characteristics of coalbed methane. Horizontal well technology is widely used in the development of deep coalbed methane. Horizontal wells can cross the natural fracture system of coal seams, effectively communicate natural fracture channels, increase the effective gas leakage area, and thus increase the coalbed methane production and recovery rate of a single well. In addition, horizontal wells can also significantly reduce the number of coalbed methane production wells, reduce pre-drilling engineering, and save land and resources.

[0003] However, deep coalbed methane horizontal wells are prone to blockage. The main reasons include: the deep burial depth of the coal seam and the high ground stress make it easy for coal powder particles to be generated and aggregated. During the drainage process, the coal powder settles and blocks the seepage channel; at the same time, after the high-mineralization formation water is produced, the temperature and pressure changes in the reservoir induce formation water scaling, further exacerbating the risk of blockage. Due to the special structural state of coalbed methane horizontal wells, especially its long horizontal well sections and complex and uneven well wall scaling, it is difficult to advance conventional physical unblocking structures in the horizontal well sections, affecting the coalbed methane collection efficiency. Therefore, in order to solve the blockage problem of highly mineralized coalbed methane horizontal wells, it is urgent to develop more flexible and efficient unblocking technologies and devices. Summary of the invention

[0004] The present invention provides a deep coalbed methane horizontal well reservoir unblocking device and unblocking method, which can quickly locate and enter the deep coalbed methane horizontal well, and effectively solve the irregular blockage state in the well.

[0005] A deep coalbed methane horizontal well reservoir blockage removal device, comprising: A positioning frame, the upper end of which is pulled by a steel wire rope; A first rotation driving device is mounted on the lower end of the positioning frame; A moving unit is rotatably arranged on the positioning frame and driven to rotate around the positioning frame by the first rotation driving device; the moving unit comprises a plurality of walking components which are circumferentially arranged and extend outward; A second rotation driving device, arranged at the bottom of the mobile unit; A rotating plate, the top of which is fixedly connected to the rotating output end of the second rotating driving device; An adjusting driving member is fixedly arranged at the bottom of the rotating plate; The adjusting plate has a circular groove at an eccentric position on its plate surface; the circular groove wall and the rotating output end of the adjusting driving member are circumferentially connected with a plurality of elastic members; the adjusting driving member drives the adjusting plate to rotate eccentrically; A gear ring driving assembly, rotatably disposed at the bottom of the adjustment plate; A plurality of movable gear assemblies are arranged circumferentially and are respectively mounted on the bottom of the rotating plate through cylinder assemblies with electromagnetic pressure relief valves, and are driven to move in the axial direction by the cylinder assemblies; during the rotation of the adjusting plate, the gear ring driving assembly is meshed with the plurality of movable gear assemblies in sequence to drive the movable gear assemblies to rotate; A plurality of acid liquid supply units are respectively fixedly mounted below the plurality of moving gear assemblies.

[0006] Preferably, the adjustment drive member comprises a first motor and a transmission sleeve; the first motor is embedded in the bottom of the rotating plate; the transmission sleeve is fixedly connected to the output shaft of the first motor; The elastic member is a connecting spring, and two ends of the connecting spring are respectively fixedly connected to the side wall of the circular groove and the transmission sleeve.

[0007] Preferably, the gear ring drive assembly comprises: A first active gear ring, the outer ring and the inner ring of which both have teeth, and a first annular track is arranged on the top; a first annular groove is arranged on the bottom of the adjustment plate; the first annular track of the first active gear ring is slidably matched with the first annular groove; A second motor is embedded in the bottom of the adjustment plate; The first gear is fixedly connected to the output shaft of the second motor and meshes with the inner ring of the first driving gear ring.

[0008] Preferably, the cylinder assembly comprises: A sliding groove, fixedly arranged at the bottom of the rotating plate; A slider, slidably disposed in the sliding groove; A cylinder with an electromagnetic pressure relief valve, one end of which is connected to the end of the sliding groove and the other end of which is connected to one end of the sliding block; The moving gear assembly comprises: The first passive gear is rotatably connected to the slider via a rotating shaft; the first passive gear is meshed with the first active gear ring at a certain position.

[0009] Preferably, the acid liquid supply unit comprises an acid liquid supply cylinder and a plurality of second fixing rods; the top of the acid liquid supply cylinder is fixedly connected to the bottom of the first passive gear through the plurality of second fixing rods.

[0010] Preferably, the first rotation driving device is arranged on the positioning plate, and the first rotation driving device is transmission-connected to the positioning frame; The walking assembly comprises: The second active gear ring has teeth on its outer ring and inner ring, and a second annular track is provided at its bottom; a second annular groove is provided at the top of the positioning plate; the second annular track of the second active gear ring is slidably matched with the second annular groove; A third motor is embedded on the top of the positioning plate; A second passive gear, rotatably disposed on the top of the positioning plate; A frame plate, one end of which is provided with a notch, and the other end of which is fixedly connected to the top of the second passive gear; A running wheel, rotatably connected to the groove wall of the groove through a wheel axle; The fourth motor is fixedly arranged on one side of the frame plate, and its output shaft is drivingly connected to the wheel axle.

[0011] Preferably, a groove is provided at the bottom of the positioning frame; and the first rotation driving device comprises: A driving gear, rotatably disposed in the slot body via a first rotating shaft; A reversing gear is rotatably disposed in the slot body via a second rotating shaft, is located at the lower end of the positioning frame, and is meshed with the driving gear; The fifth motor is fixedly arranged on one side of the positioning frame, and the output shaft thereof is drivingly connected to the first rotating shaft.

[0012] Preferably, the second rotation driving device comprises: A fixing plate, fixedly connected to the bottom of the positioning plate through a plurality of first fixing rods; The sixth motor is fixedly arranged on the top of the fixed plate, and its output shaft is fixedly connected to the top of the rotating plate.

[0013] The present invention also provides a method for removing blockages of a deep coalbed methane horizontal well reservoir, comprising the following steps: The overall unblocking device is pulled by a steel wire rope to determine the depth of the horizontal section entrance of the horizontal well; the unblocking device is hoisted and sent into the coalbed methane horizontal well through the steel wire rope, and enters through the entrance end of the vertical well of the drainage and production vertical well or the vertical well part of the horizontal well, until the unblocking device reaches the intersection of the drainage and production vertical well and the horizontal well part; A plurality of cylinder assemblies are used to drive a plurality of movable gear assemblies and an acid liquid supply unit to retract inwardly toward the center of the rotating plate, so that the current diameter of the plugging removal device meets the conditions for entering the horizontal well portion; The first rotation driving device is driven to drive the mobile unit to rotate to an angle that is the same as the angle between the horizontal well portion and the vertical well for drainage and production. At this time, the mobile unit and other components at the bottom of the mobile unit all enter the horizontal well portion; Drive multiple walking components to extend outward, and multiple walking components are in contact with the well wall of the horizontal well to fully support the unblocking device; A plurality of cylinder assemblies are used to drive a plurality of movable gear assemblies and an acid liquid supply unit to expand outward toward the center of the rotating plate, so as to fit with the well wall of the horizontal well portion; Driving the first rotation drive device to return the positioning frame to a horizontal state; At the same time, multiple walking components are driven to rotate, driving the unblocking device to move in the horizontal well; at the same time, multiple acid liquid supply units are driven to supply liquid; at the same time, the adjustment plate is driven to rotate slowly along the eccentricity by driving the adjustment drive member, so that the eccentric outward part of the adjustment plate is located at each moving gear component and stays for a preset time; at the same time, the rotating plate is driven to rotate slowly by driving the second rotation drive device; wherein, when the scale on the inner wall of the horizontal well is thick, multiple elastic components are elastically deformed, the gear ring drive component meshes with the moving gear component and applies pressure, and the acid liquid supply unit is driven by the gear ring drive component, so that the acid liquid supply is increased while increasing the physical friction of the pressure. When the pressure is too large, the electromagnetic pressure relief valve of the cylinder component releases the pressure; After the horizontal well is unblocked, multiple walking components are retracted and the wire rope is recovered and lifted out of the horizontal well.

[0014] Beneficial effects of the present invention: The present invention proposes a deep coalbed methane horizontal well reservoir unblocking device and unblocking method. The device drives an adjusting plate to rotate slowly along the eccentricity through an adjusting driving member, so that the eccentric outward portion of the adjusting plate stays at each moving gear assembly for a preset time. When the scale on the inner wall of the horizontal well is thick, multiple elastic members are elastically deformed, and the gear ring driving assembly meshes and applies pressure with the moving gear assembly. The gear ring driving assembly drives the acid supply unit to increase the acid supply and the physical friction of the pressure, which can increase the physical rotation for thicker scale and adapt to irregular blockage conditions in the well, providing the acid amount and accelerating the descaling ability of physical friction. The eccentric driving gear ring gear assembly does not affect and does not enhance the corrosion ability of thinner scale, which helps to restore the coalbed methane horizontal well to its initial linear state. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 : is an overall structural diagram of a deep coalbed methane horizontal well reservoir plugging removal device according to an embodiment of the present invention; Figure 2It is a partial structural front view of a deep coalbed methane horizontal well reservoir plugging removal device according to an embodiment of the present invention; Figure 3 It is a schematic structural diagram of the pressure-unblocking part of the deep coalbed methane horizontal well reservoir unblocking device from a bottom perspective according to an embodiment of the present invention; Figure 4 It is a partial A structural diagram of a deep coalbed methane horizontal well reservoir plugging removal device according to an embodiment of the present invention; Figure 5 It is a flow chart of a blockage removal method of a deep coalbed methane horizontal well reservoir blockage removal device according to an embodiment of the present invention.

[0016] Among them, 1. positioning plate; 2. fixed plate; 3. rotating plate; 4. acid liquid supply cylinder; 5. reversing gear; 6. walking wheel; 7. driving gear; 8. positioning frame; 9. wire rope; 10. first fixed rod; 11. second fixed rod; 12. frame plate; 13. sliding groove; 14. rotating shaft; 15. first passive gear; 16. first active gear ring; 17. first gear; 18. cylinder; 19. adjusting plate; 20. connecting spring; 21. transmission sleeve; 22. second gear; 23. second passive gear; 24. second active gear ring. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of the present invention, unless otherwise specified, the meaning of "multiple" is two or more.

[0019] Example Deep coalbed methane horizontal wells are prone to blockage. The main reasons include: the deep burial depth of coal seams and high ground stress make it easy for coal powder particles to be generated and aggregated. During the drainage process, coal powder sedimentation blocks the seepage channel; at the same time, after the high-mineralization formation water is produced, the changes in reservoir temperature and pressure induce formation water scaling, further exacerbating the risk of blockage. Due to the special structural state of coalbed methane horizontal wells, especially their long horizontal well sections and complex wellbore trajectories, it is difficult for conventional vertical well deblocking devices to effectively enter and act on the blocked parts. The space limitations in the horizontal well and the curvature of the wellbore trajectory make it difficult to advance the deblocking tool, thereby increasing the difficulty of clearing the blockage. To this end, this embodiment proposes a reservoir deblocking device for deep coalbed methane horizontal wells, such as Figure 1-2 As shown, Figure 1 For a specific three-dimensional structure diagram, Figure 2 It is a front view of the local structure. It specifically includes: a positioning frame 8, a moving unit, a rotating plate 3, an adjusting driving member, an adjusting plate 19, a gear ring driving assembly, a plurality of moving gear assemblies and a plurality of acid liquid supply units. The upper end of the positioning frame 8 is pulled by a steel wire rope 9; the moving unit is mounted on the lower end of the positioning frame 8 and driven to rotate by a first rotating driving device; the moving unit includes a plurality of circumferentially arranged and outwardly extending walking assemblies, and the specific structure is as follows Figure 4 As shown, Figure 4 It is a partial A structure diagram; the rotating plate 3 is mounted under the mobile unit through a second rotating drive device and driven to rotate; the adjusting drive member is fixedly mounted at the bottom of the rotating plate 3; a circular groove is opened at an eccentric position of the plate surface of the adjusting plate 19; the circular groove wall and the adjusting drive member are circumferentially connected with a plurality of elastic members; the adjusting drive member drives the adjusting plate 19 to rotate eccentrically; the gear ring driving assembly is rotatably mounted on the adjusting plate 19; a plurality of mobile gear assemblies are circumferentially arranged, and are respectively mounted on the rotating plate 3 through a cylinder assembly, and are driven by the cylinder assembly to move toward the center of the rotating plate 3; a plurality of mobile gear assemblies are meshed with the gear ring driving assembly at a certain position; a plurality of acid liquid supply units are respectively fixedly mounted under a plurality of mobile gear assemblies. Related structures are as follows Figure 3 As shown, Figure 3 Schematic diagram of the structure of the bottom perspective pressure relief part.

[0020] The above structure of the present invention adopts a hoisting and self-propelled unblocking method when performing unblocking. The flow chart is as follows: Figure 5 As shown, the following steps are included: S1: The overall unblocking device is pulled by the steel wire rope 9 to determine the depth of the horizontal section entrance of the horizontal well; the unblocking device is hoisted and sent into the coalbed methane horizontal well by the steel wire rope 9, and enters through the entrance end of the vertical well of the drainage and production vertical well or the vertical well part of the horizontal well, until the unblocking device reaches the intersection of the drainage and production vertical well and the horizontal well part.

[0021] S2: Drive multiple moving gear assemblies and acid supply units to retract inwardly toward the center of the rotating plate 3 through multiple cylinder assemblies, so that the current diameter of the plugging removal device meets the conditions for entering the horizontal well portion.

[0022] S3: driving the first rotation drive device to drive the mobile unit to rotate to an angle that is the same as the angle between the horizontal well portion and the production and drainage vertical well. At this time, the mobile unit and other components at the bottom of the mobile unit all enter the horizontal well portion.

[0023] S4: Drive multiple walking assemblies to extend outward, and the multiple walking assemblies are in contact with the well wall of the horizontal well portion to fully support the unblocking device.

[0024] S5: Drive multiple moving gear assemblies and acid supply units respectively through multiple cylinder assemblies to expand outwards toward the center of the rotating plate 3 and fit with the well wall of the horizontal well portion.

[0025] S6: driving the first rotation driving device to return the positioning frame 8 to a horizontal state.

[0026] S7: Drive multiple walking components to rotate, and drive the unblocking device to move in the horizontal well; at the same time, drive multiple acid liquid supply units to supply liquid; drive the adjustment drive member to drive the adjustment plate 19 to rotate slowly along the eccentricity, so that the eccentric outward part of the adjustment plate 19 is located at each moving gear assembly and stays for a preset time; drive the second rotation drive device to drive the rotating plate 3 to rotate slowly; wherein, when the scale on the inner wall of the horizontal well is thicker, multiple elastic parts are elastically deformed, the gear ring drive assembly meshes with the moving gear assembly and applies pressure, and the acid liquid supply unit is driven by the gear ring drive assembly, thereby increasing the acid supply and increasing the physical friction of the pressure. When the pressure is too large, the electromagnetic pressure relief valve of the cylinder assembly releases the pressure.

[0027] S8: After the horizontal well is unblocked, the multiple traveling components are retracted and the wire rope 9 is recovered and lifted out of the horizontal well.

[0028] In the present invention, the adjustment drive member includes a first motor and a transmission sleeve 21; the first motor is embedded at the bottom of the rotating plate 3; the transmission sleeve 21 is fixedly connected to the output shaft of the first motor. The elastic member is a connecting spring 20, and the two ends of the connecting spring 20 are respectively fixedly connected to the side wall of the circular groove and the transmission sleeve 21. When the gear ring drive assembly is engaged and squeezed, the connecting spring 20 is deformed, pressurizing the moving gear assembly, so that the acid liquid supply unit presses the horizontal well wall, and at the same time, combined with the drive of the gear ring, the physical rotation friction is increased.

[0029] like Figure 3As shown, the gear ring drive assembly includes a first active gear ring 16, a second motor and a first gear 17. The outer ring and the inner ring of the first active gear ring 16 both have teeth, and a first annular track is arranged on the top thereof; a first annular groove is arranged at the bottom of the adjustment plate 19; the first annular track of the first active gear ring 16 is slidably matched with the first annular groove; the second motor is embedded at the bottom of the adjustment plate 19; the first gear 17 is fixedly connected to the output shaft of the second motor, and meshes with the inner ring of the first active gear ring 16.

[0030] In this embodiment, the cylinder assembly is provided with a pressure relief valve and a moving pair, specifically including a sliding groove 13, a slider and a cylinder 18. The sliding groove 13 is fixedly arranged at the bottom of the rotating plate 3; the slider is slidably arranged in the sliding groove 13; the cylinder 18 is provided with an electromagnetic pressure relief valve, one end of which is connected to the end of the sliding groove 13, and the other end is connected to one end of the slider. The moving gear assembly includes a first passive gear 15, which is rotatably connected to the slider through a rotating shaft 14; the first passive gear 15 is meshed with a first active gear ring 16 at a certain position.

[0031] like Figure 2 As shown, the acid liquid supply unit includes an acid liquid supply cylinder 4 and a plurality of second fixed rods 11; the top of the acid liquid supply cylinder 4 is fixedly connected to the bottom of the first passive gear 15 through the plurality of second fixed rods 11. The bottom of the acid liquid supply cylinder 4 is connected to a liquid storage structure, a solenoid valve and a booster pump to continuously provide acid liquid.

[0032] In addition, this embodiment provides a gear ring gear transmission structure, a structure for moving the walking wheel to expand and recover, such as Figure 4 The walking assembly includes a second active gear ring 24, a third motor, a second gear 22, a second passive gear 23, a frame plate 12, a walking wheel 6 and a fourth motor. The first rotating driving device is arranged on the positioning plate 1, and the first rotating driving device is connected to the positioning frame 8 by transmission.

[0033] The outer ring and the inner ring of the second active gear ring 24 both have teeth, and a second annular track is arranged at the bottom thereof; a second annular groove is provided at the top of the positioning plate 1; the second annular track of the second active gear ring 24 is slidably matched with the second annular groove; the third motor is embedded in the top of the positioning plate 1; the second gear 22 is fixedly connected to the output shaft of the third motor and meshes with the inner ring of the second active gear ring 24; a notch is provided at one end of the frame plate 12, and the other end is fixedly connected to the top of the second passive gear 23, and the second passive gear 23 is rotatably arranged at the top of the positioning plate 1 and meshes with the second active gear ring 24; the walking wheel 6 is rotatably connected to the groove wall of the notch through the wheel axle; the fourth motor is fixedly arranged on one side of the frame plate 12, and its output shaft is transmission-connected to the wheel axle.

[0034] Furthermore, the first rotation drive device adopts a transmission structure based on the gear reduction principle. A slot is provided at the bottom of the positioning frame 8; the first rotation drive device comprises a driving gear 7, a reversing gear 5 and a fifth motor. The driving gear 7 is rotatably arranged in the slot via a first rotating shaft; the reversing gear 5 is rotatably arranged in the slot via a second rotating shaft, and is located at the lower end of the positioning frame 8 and meshed with the driving gear 7; the fifth motor is fixedly arranged on one side of the positioning frame 8, and its output shaft is transmission-connected with the first rotating shaft.

[0035] The second rotation driving device is directly driven by a motor. The second rotation driving device includes a fixed plate 2 and a sixth motor. The fixed plate 2 is fixedly connected to the bottom of the positioning plate 1 through a plurality of first fixing rods 10; the sixth motor is fixedly arranged on the top of the fixed plate 2, and its output shaft is fixedly connected to the top of the rotating plate 3.

[0036] In this embodiment, the device uses wire rope traction technology to successfully send the unblocking device into the deep coalbed methane horizontal well, solving the problem that the traditional method is difficult to reach the deep horizontal well section. Through the precise depth determination and hoisting and delivery process, it is ensured that the device can accurately reach the target position, providing a basis for subsequent operations. The mobile gear assembly and the acid liquid supply unit are driven to retract or expand toward the center of the rotating plate through multiple cylinder assemblies to adapt to the diameter conditions of the horizontal well section; the first rotating drive device is driven to drive the mobile unit to rotate to the same angle as the horizontal well section, so that the unblocking device can smoothly enter the horizontal well section. The device realizes the free retraction and release of the mobile gear assembly and the acid liquid supply unit through the flexible drive of the cylinder assembly, so as to adapt to the horizontal well sections of different diameters. At the same time, the precise rotation of the first rotating drive device ensures that the unblocking device can enter the horizontal well at the correct angle, avoiding operational difficulties or failures caused by angle deviation. In addition, the extension and support of the walking assembly ensure the stability of the unblocking device in the horizontal well. Driven by the cylinder assembly, the mobile gear assembly and the acid supply unit can fit closely to the well wall, achieving effective descaling. In particular, the eccentric drive ring gear assembly can adapt to the irregular blockage state in the well, increase physical rotation and acid supply for thicker scale, and physical friction speeds up the descaling speed. For thinner scale, the assembly will not enhance its corrosion ability, which helps protect the well wall.

[0037] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A deep coalbed methane horizontal well reservoir blockage removal device, characterized in that: include: A positioning frame (8), the upper end of which is pulled by a steel wire rope (9); A first rotation driving device is mounted on the lower end of the positioning frame (8); A moving unit is rotatably arranged on the positioning frame (8) and driven to rotate around the positioning frame (8) by the first rotation driving device; the moving unit comprises a plurality of walking components which are circumferentially arranged and extend outward; A second rotation driving device is arranged at the bottom of the mobile unit; A rotating plate (3), the top of which is fixedly connected to the rotating output end of the second rotating driving device; An adjusting driving member, fixedly arranged at the bottom of the rotating plate (3); The adjusting plate (19) has a circular groove at an eccentric position on its plate surface; a plurality of elastic members are connected to the wall of the circular groove and the rotation output end of the adjusting driving member along the circumferential direction; the adjusting driving member drives the adjusting plate (19) to rotate eccentrically; A gear ring drive assembly, rotatably disposed on the bottom of the adjustment plate (19); A plurality of movable gear assemblies are arranged circumferentially and are respectively mounted on the bottom of the rotating plate (3) through cylinder assemblies with electromagnetic pressure relief valves, and are driven to move in the axial direction by the cylinder assemblies; during the rotation of the adjustment plate (19), the gear ring drive assembly sequentially meshes with the plurality of movable gear assemblies to drive the movable gear assemblies to rotate; A plurality of acid liquid supply units are respectively fixedly mounted below the plurality of moving gear assemblies.

2. The deep coalbed methane horizontal well reservoir blockage removal device according to claim 1 is characterized in that: The adjustment drive member comprises a first motor and a transmission sleeve (21); the first motor is embedded in the bottom of the rotating plate (3); the transmission sleeve (21) is fixedly connected to the output shaft of the first motor; The elastic member is a connecting spring (20), and two ends of the connecting spring (20) are respectively fixedly connected to the side wall of the circular groove and the transmission sleeve (21).

3. The deep coalbed methane horizontal well reservoir blockage removal device according to claim 1 is characterized in that: The gear ring drive assembly comprises: A first active gear ring (16), the outer ring and the inner ring of which both have teeth, and a first annular track is arranged on the top; a first annular groove is arranged on the bottom of the adjustment plate (19); the first annular track of the first active gear ring (16) is slidably matched with the first annular groove; A second motor, embedded in the bottom of the adjustment plate (19); The first gear (17) is fixedly connected to the output shaft of the second motor and meshes with the inner ring of the first active gear ring (16).

4. The deep coalbed methane horizontal well reservoir blockage removal device according to claim 3 is characterized in that: The cylinder assembly comprises: A sliding groove (13) fixedly arranged at the bottom of the rotating plate (3); A sliding block, slidably disposed in the sliding groove (13); A cylinder (18) having an electromagnetic pressure relief valve, one end of which is connected to the end of the sliding groove (13) and the other end of which is connected to one end of the sliding block; The mobile gear assembly comprises: The first passive gear (15) is rotatably connected to the slider via a rotating shaft (14); the first passive gear (15) meshes with the first active gear ring (16) at a certain position.

5. The deep coalbed methane horizontal well reservoir blockage removal device according to claim 4 is characterized in that: The acid liquid supply unit comprises an acid liquid supply cylinder (4) and a plurality of second fixing rods (11); the top of the acid liquid supply cylinder (4) is fixedly connected to the bottom of the first passive gear (15) via the plurality of second fixing rods (11).

6. The deep coalbed methane horizontal well reservoir blockage removal device according to claim 1, characterized in that: The first rotation driving device is arranged on the positioning plate (1), and the first rotation driving device is transmission-connected to the positioning frame (8); The walking assembly comprises: A second active gear ring (24), the outer ring and the inner ring of which both have teeth, and a second annular track is arranged at the bottom; a second annular groove is arranged at the top of the positioning plate (1); the second annular track of the second active gear ring (24) is slidably matched with the second annular groove; A third motor, embedded in the top of the positioning plate (1); A second gear (22) is fixedly connected to the output shaft of the third motor and meshes with the inner ring of the second active gear ring (24); A second passive gear (23) rotatably disposed on the top of the positioning plate (1); A frame plate (12) having a notch at one end and the other end fixedly connected to the top of the second passive gear (23); A running wheel (6) is rotatably connected to the groove wall of the groove through a wheel axle; A fourth motor is fixedly arranged on one side of the frame plate (12), and an output shaft thereof is drivingly connected to the wheel shaft.

7. The deep coalbed methane horizontal well reservoir blockage removal device according to claim 6, characterized in that: The bottom of the positioning frame (8) is provided with a slot; the first rotation driving device comprises: A driving gear (7) is rotatably disposed in the slot body via a first rotating shaft; A reversing gear (5) is rotatably disposed in the slot body via a second rotating shaft, is located at the lower end of the positioning frame (8), and is meshed with the driving gear (7); A fifth motor is fixedly arranged on one side of the positioning frame (8), and its output shaft is drivingly connected to the first rotating shaft.

8. The deep coalbed methane horizontal well reservoir blockage removal device according to claim 6, characterized in that: The second rotation driving device comprises: A fixing plate (2) fixedly connected to the bottom of the positioning plate (1) via a plurality of first fixing rods (10); A sixth motor is fixedly arranged on the top of the fixed plate (2), and its output shaft is fixedly connected to the top of the rotating plate (3).

9. A method for removing blockage using the deep coalbed methane horizontal well reservoir blockage removal device according to any one of claims 1 to 8, characterized in that: The following steps are involved: The overall unblocking device is pulled by a steel wire rope (9) to determine the depth of the entrance of the horizontal section of the horizontal well; the unblocking device is hoisted and sent into the coalbed methane horizontal well through the steel wire rope (9), and enters through the entrance end of the vertical well section of the drainage and production vertical well or the horizontal well, until the unblocking device reaches the intersection of the vertical well section and the horizontal well section; The plurality of movable gear assemblies and the acid liquid supply unit are driven by the plurality of cylinder assemblies to retract inwardly toward the center of the rotating plate (3), so that the current diameter of the plugging removal device meets the conditions for entering the horizontal well portion; The first rotation driving device is driven to drive the mobile unit to rotate to the same angle as the angle between the horizontal well portion and the vertical well for drainage and production. At this time, the mobile unit and other components at the bottom of the mobile unit all enter the horizontal well portion; Drive multiple walking components to extend outward, and multiple walking components are in contact with the well wall of the horizontal well to fully support the unblocking device; A plurality of cylinder assemblies are used to drive a plurality of movable gear assemblies and an acid liquid supply unit to expand outwards toward the center of the rotating plate (3) so as to fit the well wall of the horizontal well portion; Driving the first rotation drive device to return the positioning frame (8) to the same straight line as the moving unit; Drive multiple walking components to rotate, drive the unblocking device to move in the horizontal well; drive multiple acid liquid supply units to supply liquid; drive the adjustment plate (19) to rotate along the eccentricity by driving the adjustment drive member, so that the eccentric outward part of the adjustment plate (19) is located at each moving gear component and stays for a preset time; drive the second rotation drive device to drive the rotating plate (3) to rotate; wherein, when the scale on the inner wall of the horizontal well is thick, the multiple elastic components are elastically deformed, the gear ring drive component meshes with the moving gear component and applies pressure, and the acid liquid supply unit is driven by the gear ring drive component, thereby increasing the acid liquid supply and increasing the physical friction of the pressure. When the pressure is too large, the electromagnetic pressure relief valve of the cylinder component releases the pressure; After the horizontal well is unblocked, the multiple walking components are retracted and the wire rope (9) is recovered and lifted out of the horizontal well.

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