Downhole drilling tool anti-vibration and revolution tool

Abstract

This invention belongs to the field of oil drilling and production, and specifically relates to a downhole drilling tool for vibration prevention and rotation control. It includes an upper support cylinder, a pressure plate, a suspension plate, a high-strength spring, a suspension block, a wire rope, a spring, a ring, a retaining ring, an elastic pad, a disc spring, a hydraulic rod, a lower support cylinder, a leak-proof groove, cutting teeth, and a nozzle. The high-strength spring buffers the impact force from the upper and lower parts of the suspension block, and the spring itself buffers and cancels out the impact force. The elastic pad, hydraulic rod, and disc spring absorb the oscillating impact energy of the suspension block. The leak-proof groove prevents blockage of the drilling fluid flow channels. The internal gravity device reduces the radial, axial, and circumferential vibration and oscillation of the downhole drill bit and drilling tools, keeping the drill bit in a stable self-rotating rock-breaking state, achieving stable rock breaking, improving the rock-breaking efficiency of the drill bit, protecting the drill bit, improving oil and gas drilling efficiency, and reducing drilling costs.

Description

Technical Field

[0001] This invention relates to a vibration damping and orbital tool for downhole drilling tools, belonging to the field of oil drilling. Background Technology

[0002] During oil drilling, both the drill bit and drill string rotate around their own central axis. As the drill bit continuously cuts through the formation, irregularities in the formation, variations in rock drillability and hardness, changes in rock texture, and constant changes in drilling parameters lead to radial, axial, and circumferential vibrations and oscillations of the drill string. This results in uneven cutting speeds, shifts in the drill bit's rotation center, and simultaneous rotation and revolution of the drill bit, severely impacting the drill bit's rock-breaking efficiency and lifespan. Particularly in deep wells with complex formations, high rock hardness, poor drillability, and complex lithology exacerbate drill bit vibration and revolution, causing a sharp decline in rock-breaking efficiency and working life. Therefore, there is an urgent need to explore new anti-vibration and anti-revolution technologies for downhole drilling tools to suppress vibration and oscillation, ensuring the drill bit remains in a stable rotational working state, achieving stable rock breaking, improving rock-breaking efficiency, protecting the drill bit, increasing oil and gas drilling efficiency, and reducing drilling costs.

[0003] To address the above problems, this invention proposes a downhole drilling tool for vibration and rotation prevention. When the drilling tool and drill bit vibrate severely at the bottom of the well, the tool's internal gravity device will swing laterally and longitudinally with the drilling tool, and move at a certain speed in the opposite direction to the lateral swing, forming opposing resistance. Because the opposing resistance is opposite to its inertia, the amplitude of drilling tool vibration is reduced, the vibration and rotation of the drilling tool are mitigated, and well deviation is prevented. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a downhole drilling tool that reduces the radial, axial, and circumferential vibration and oscillation of the downhole drill bit and drilling tools by means of an internal gravity device, so that the drill bit is in a stable self-rotating rock-breaking state and prevents the drill bit from revolving around the center of gravity.

[0005] The downhole drilling tool vibration damping and revolution control tool of this invention comprises an upper support cylinder, a pressure plate, a suspension plate, a clamping nut, bolts, a splined groove for the suspension plate, a high-strength spring, a suspension block, a wire rope, a fixing lug, a spring, a washer, a support base, a clamping ring, an annular ring, a snap ring, an elastic pad, a connecting rod, a fixing plate, a disc spring, a hydraulic rod, a sliding block, a retaining ring, a lower support cylinder, a limit nut, a leak-proof splined groove, a leak-proof groove, a drill bit body, an internal flow channel, cutting teeth, and a nozzle. The upper support cylinder supports the internal parts of the tool. The pressure plate is installed on the upper part of the upper support cylinder via external threads to press down the lower suspension plate and allow drilling fluid to flow. The pressure plate is annular and hollow in the middle. The suspension plate is located inside the upper cylinder of the support, below the pressure plate. It is used to install the clamping nut and bolts and to provide suspension force for the lower wire rope. The spline groove of the suspension plate is located inside the upper cylinder of the support and is used to install the suspension plate. It mates with the spline of the suspension plate. The clamping nut is located on the upper part of the suspension plate and is used to mate with the bolt to fix the bolt and the lower wire rope. The bolt is located in the hole of the suspension plate and is fastened to the lower wire rope to fix the wire rope to the suspension plate. The hole of the suspension plate is located inside the suspension plate and is used to install the bolt. The flow channel of the suspension plate is located inside the suspension plate and provides a channel for drilling fluid to flow. The spline of the suspension plate is located around the outside of the suspension plate and mates with the spline groove of the suspension plate for installing the suspension plate. The wire rope is positioned below the bolt, connected to the bolt at the top, and connected to the fixing lug at the bottom. It connects to the suspended weight block via the fixing lug, which is evenly distributed around the block, securing the wire rope to the weight block. The suspended weight block, via the wire rope and fixing lug, is positioned at the center of the upper support cylinder and can swing freely. When the upper support cylinder vibrates or swings, the suspended weight block moves at a certain speed in the opposite direction to the lateral and longitudinal swing of the upper support cylinder, creating opposing resistance and reducing the amplitude of drill bit vibration, thus mitigating drill bit vibration and revolution. A high-strength spring is mounted on the wire rope. When the suspended weight block vibrates or swings vertically, the high-strength spring buffers the vertical impact force, absorbing the vertical impact energy of the suspended weight block and reducing the longitudinal vibration and swing of the drill bit and drill string. A shim is positioned between the suspended weight block and the spring. The washer is connected to the spring, allowing the spring force to be applied to the suspended weight. The spring is positioned between the washer and the support base. When the suspended weight swings, it impacts the washer, which then transfers the impact force to the spring, which buffers and cancels it out. The support base is positioned between the upper support cylinder and the spring, transferring a portion of the spring's impact force to the upper support cylinder. The washer, spring, and support base are evenly arranged around the suspended weight, and multiple layers can be installed vertically. A clamping ring is located at the bottom of the support base and is threaded to the upper support cylinder for securing the support base. An annular ring is located on the lower outer ring of the suspended weight for installing and fixing the elastic pad. The annular ring is circular and positioned around the outside of the suspended weight, with the elastic pad fixed to it. When the suspended weight swings, it impacts the elastic pad, which absorbs the impact energy.The connecting rod, positioned between the annular ring and the upper support cylinder, transfers some of the impact force to the connecting rod. A retaining ring, located between the connecting rod and the clamping ring, is secured to the upper support cylinder for fixing and limiting the connecting rod. A fixing plate, threaded to the upper support cylinder, supports and clamps the upper connecting rod. A hydraulic rod, hinged between the suspended weight and the sliding block, absorbs the swing energy of the suspended weight and transfers it to the sliding block. Disc springs, located on both sides of the sliding block, buffer the vertical impact force. When the suspended weight collides with the hydraulic rod, it absorbs the impact energy and transfers some of it to the connecting rod, which then transfers it to the sliding block. The sliding block then transfers the impact force to the disc springs on both sides. The system absorbs the impact energy of the suspended weight. A retaining ring is located below the disc spring and is mounted on the upper support cylinder to support and limit the disc spring. The lower support cylinder is located below the upper support cylinder and is threaded to it. It supports and mounts internal components. A leak-proof groove spline is located inside the lower support cylinder and mates with the leak-proof groove spline for installation. A limiting nut is located above the leak-proof groove and threaded to the lower support cylinder to fix and limit the leak-proof groove. The leak-proof groove is located below the suspended weight, with a supporting ramp in the middle. If the upper suspended weight or other components fall due to erosion or other reasons, the fallen parts will land on the supporting ramp, preventing them from falling further and clogging the lower drilling fluid flow channel, thus preventing pump stalling. A leak-proof groove spline is located around the leak-proof groove and mates with the leak-proof groove spline for installation. A flow channel is located around the leak-proof groove for the flow of drilling fluid.

[0006] The drill bit body is located at the lower part of the support lower cylinder and is threadedly connected to the support lower cylinder. The inner flow channel is located inside the drill bit body for drilling fluid circulation. The nozzle is located on the drill bit body and connected to the inner flow channel for spraying high-pressure drilling fluid. The cutting teeth are arranged on the drill bit body for cutting rocks. When the cutting teeth contact the formation, during the cutting process, affected by drilling parameters, formation parameters, etc., the cutting teeth, drill bit body, and upper drill string will generate radial, axial, and circumferential vibrations and oscillations. Under the action of this invention, the vibration and oscillation of the drill bit and drill string can be suppressed, so that the drill bit is in a stable self-rotating rock-breaking state. At the same time, after the drill bit is in a stable state, the inner flow channel and nozzle are also in a stable self-rotating state, thereby spraying a stable jet, forming a stable downhole flow field, effectively cooling and lubricating the drill bit, helping to improve the rock-breaking efficiency of the drill bit, allowing rock cuttings to leave the bottom of the well in time, and preventing repeated breaking of rock cuttings.

[0007] The beneficial effects of this invention are:

[0008] When the drill bit and drill string vibrate and oscillate, the weight block moves at a certain speed in the opposite direction to the lateral and longitudinal oscillation of the upper support cylinder, forming opposite resistance, reducing the amplitude of drill string vibration, and mitigating drill string vibration and revolution; the high-strength spring can buffer the vertical impact force of the weight block to absorb the vertical longitudinal impact energy of the weight block, reducing the longitudinal vibration and oscillation of the drill bit and drill string; when the weight block oscillates, the spring can buffer and cancel the impact force; after the weight block oscillates and collides with the elastic pad, the elastic pad will absorb the oscillation impact energy of the weight block; the hydraulic rod can also absorb the oscillation energy of the weight block and transfer the energy to the sliding block, and the disc spring can buffer the vertical impact force of the sliding block. The sliding block transfers the impact force to the disc springs on the upper and lower sides, and the disc springs can also absorb the impact energy of the weight block; the anti-leakage groove can prevent the tool parts from falling and continuing to fall, causing blockage of the lower drilling fluid flow channel, leading to pump stalling. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of the present invention.

[0010] In the diagram: 1. Upper support cylinder; 2. Pressure plate; 3. Suspension plate; 4. Compression nut; 5. Bolt; 6. Spline groove of suspension plate; 7. High-strength spring; 8. Suspension block; 9. Steel wire rope; 10. Fixing lug; 11. Spring; 12. Washer; 13. Support seat; 14. Compression ring; 15. Ring ring; 16. Snap ring; 17. Elastic pad; 18. Connecting rod; 19. Fixing plate; 20. Disc spring; 21. Hydraulic rod; 22. Sliding block; 23. Retaining ring; 24. Lower support cylinder; 25. Limit nut; 26. Anti-leakage spline groove; 27. Anti-leakage groove; 28. Drill bit body; 29. ​​Inner flow channel; 30. Cutting teeth; 31. Nozzle.

[0011] Figure 2 for Figure 1 Sectional view of AA.

[0012] In the figure: 3-1, suspension plate orifice; 3-2, suspension plate flow channel; 3-3, suspension plate spline.

[0013] Figure 3 for Figure 1 Cross-sectional view of the middle section (BB).

[0014] In the figure: 27-1, anti-leakage groove spline; 27-2, anti-leakage groove flow channel; 27-3, support slope. Detailed Implementation

[0015] The present invention will now be further described with reference to the accompanying drawings:

[0016] like Figures 1-3As shown, the downhole drilling tool vibration prevention and revolution control tool of the present invention includes an upper support cylinder 1, a pressure plate 2, a suspension plate 3, a clamping nut 4, a bolt 5, a spline groove of the suspension plate 6, a high-strength spring 7, a suspension block 8, a wire rope 9, a fixing lug 10, a spring 11, a washer 12, a support base 13, a clamping ring 14, an annular ring 15, a retaining ring 16, an elastic pad 17, a connecting rod 18, a fixing plate 19, a disc spring 20, a hydraulic rod 21, a sliding block 22, a retaining ring 23, a lower support cylinder 24, a limiting nut 25, a leak-proof spline groove 26, a leak-proof groove 27, a drill bit body 28, an internal flow channel 29, cutting teeth 30, and a nozzle 31. The upper support cylinder 1 is used to support the internal parts of the tool. The pressure plate 2 is installed on the upper part of the upper support cylinder 1 through external threads to press down the lower suspension plate 3 and to allow drilling fluid to flow. The pressure plate 2 is annular and hollow in the middle. The suspension plate 3 is located inside the upper support cylinder 1, below the pressure plate 2, for installing the clamping nut 4 and bolt 5, and providing suspension force for the lower wire rope 9. The suspension plate spline groove 6 is located inside the upper support cylinder 1 for installing the suspension plate 3, and mates with the suspension plate spline 3-3. The clamping nut 4 is located on the upper part of the suspension plate 3, and mates with the bolt 5 to fix the bolt 5 and the lower wire rope 9. The bolt 5 is located in the suspension plate eyelet 3-1, and the bolt 5 is fastened to the lower wire rope 9 to fix the wire rope 9 to the suspension plate 3. The suspension plate eyelet 3-1 is located inside the suspension plate 3 for installing the bolt 5. The suspension plate flow channel 3-2 is located inside the suspension plate 3 to provide a drilling fluid flow channel. The suspension plate spline 3-3 is located around the outside of the suspension plate 3, and mates with the suspension plate spline groove 6 for installing the suspension plate 3. The wire rope 9 is located below the bolt 5, connected to the bolt 5 at the top, and connected to the fixing lug 10 at the bottom. It is connected to the suspension block 8 via the fixing lug 10, which is evenly distributed around the suspension block 8, thus fixing the wire rope 9 to the suspension block 8. The suspension block 8 is located at the center of the upper support cylinder 1 via the wire rope 9 and the fixing lug 10, allowing it to swing freely. When the upper support cylinder 1 vibrates and swings, the suspension block 8 moves at a certain speed in the opposite direction to the lateral and longitudinal swing of the upper support cylinder 1, creating opposing resistance, reducing the amplitude of drill bit vibration, and mitigating drill bit vibration and revolution. A high-strength spring 7 is mounted on the wire rope 9. When the suspension block 8... When block 8 experiences vertical vibration and swaying, the high-strength spring 7 buffers the impact force of the suspended block 8, absorbing the vertical impact energy and reducing the longitudinal vibration and swaying of the drill bit and drill string. Shim 12 is positioned between the suspended block 8 and the spring 11, connected to the spring 11, allowing the spring force of the spring 11 to be applied to the suspended block 8. The spring 11 is positioned between the shim 12 and the support base 13. When the suspended block 8 sways, it will generate an impact force on the shim 12, which will then be applied to the spring 11. The spring 11 buffers and cancels this impact force. The support base 13 is positioned between the upper support cylinder 1 and the spring 11.A portion of the impact force from spring 11 is applied to the upper support cylinder 1. The gasket 12, spring 11, and support base 13 are evenly arranged around the suspended weight block 8, with multiple layers possible. A clamping ring 14 is located at the lower part of the support base 13 and is threadedly connected and fixed to the upper support cylinder 1 for securing the support base 13. An annular ring 15 is located on the lower outer ring of the suspended weight block 8 for installing and fixing the elastic pad 17. The annular ring 15 is circular and located around the outer perimeter of the suspended weight block 8. The elastic pad 17 is fixed to the annular ring 15. When the suspended weight block 8 swings, it impacts the elastic pad 17. The elastic pad 17 absorbs the impact energy of the suspended weight block 8 and transmits part of the impact force to the connecting rod 18. The connecting rod 18 is... A retaining ring 16 is positioned between the annular ring 15 and the upper support cylinder 1, which can transfer part of the impact force of the elastic pad 17 to the upper support cylinder 1. A retaining ring 16 is positioned between the connecting rod 18 and the clamping ring 14, and is clamped onto the upper support cylinder 1, used to fix and limit the connecting rod 18. A fixing plate 19 is positioned below the connecting rod 18 and is threadedly connected to the upper support cylinder 1, used to support and clamp the upper connecting rod 18. A hydraulic rod 21 is positioned between the suspended weight block 8 and the sliding block 22, and is hinged to both. The hydraulic rod 21 can absorb the swing energy of the suspended weight block 8 and transfer the energy to the sliding block 22. Disc springs 20 are positioned on both sides of the sliding block 22, and the disc springs 20 can provide support for the upper part of the sliding block 22. The impact force is buffered. When the suspended weight 8 swings and collides with the hydraulic rod 21, the hydraulic rod 21 absorbs the impact energy of the swing of the suspended weight 8 and transfers part of the impact force to the connecting rod 18. The connecting rod 18 transfers the impact force to the sliding block 22, and the sliding block 22 transfers the impact force to the disc springs 20 on the upper and lower sides. The disc springs 20 can also absorb the impact energy of the suspended weight 8. The retaining ring 23 is set at the lower part of the disc spring 20 and is installed on the upper support cylinder 1 to support and limit the disc spring 20. The lower support cylinder 24 is set at the lower part of the upper support cylinder 1 and is threadedly connected to the upper support cylinder 1 to support and install internal parts. The anti-leakage groove spline groove 26 is set inside the lower support cylinder 24 and mates with the anti-leakage groove spline 27-1. The anti-leakage groove 27 is installed. The limiting nut 25 is set on the upper part of the anti-leakage groove 27 and is connected to the lower support cylinder 24 by threads to fix the anti-leakage groove 27. The anti-leakage groove 27 is set at the lower part of the suspension block 8. The anti-leakage groove 27 is set in the middle of the anti-leakage groove 27. If the upper suspension block 8 or other parts fall off due to erosion or other reasons, the fallen parts will fall onto the supporting inclined surface 27-3 to prevent the parts from falling further and causing blockage of the lower drilling fluid flow channel, resulting in pump stagnation. The anti-leakage groove spline 27-1 is set around the anti-leakage groove 27 and cooperates with the anti-leakage groove spline groove 26 to install the anti-leakage groove 27. The anti-leakage groove flow channel 27-2 is set around the anti-leakage groove 27 for the flow of drilling fluid. The drill bit body 28 is located at the lower part of the support lower cylinder 24 and is threadedly connected to the support lower cylinder 24. The inner flow channel 29 is located inside the drill bit body 28 for the flow of drilling fluid. The nozzle 31 is located on the drill bit body 28 and is connected to the inner flow channel 29.Used for injecting high-pressure drilling fluid, the cutting teeth 30 are arranged on the drill bit body 28 for cutting rock. When the cutting teeth 30 contact the formation, during the cutting process, influenced by drilling parameters, formation parameters, etc., the cutting teeth 30, the drill bit body 28, and the upper drill string will experience radial, axial, and circumferential vibrations and oscillations. Under the action of this invention, the vibration and oscillation of the drill bit and drill string can be suppressed, keeping the drill bit in a stable rotational rock-breaking state. Simultaneously, after the drill bit is in a stable state, the inner flow channel 29 and the nozzle 31 also enter a stable rotational state, thereby injecting a stable jet, forming a stable downhole flow field, effectively cooling and lubricating the drill bit, assisting in improving the drill bit's rock-breaking efficiency, allowing rock cuttings to leave the bottom of the well in a timely manner, and preventing repeated rock cuttings breakage.

Claims

1. A vibration damping and rotation control tool for downhole drilling tools, comprising an upper support cylinder (1), a pressure plate (2), a suspension plate (3), a clamping nut (4), a bolt (5), a spline groove on the suspension plate (6), a high-strength spring (7), a suspension block (8), a wire rope (9), a fixing lug (10), a spring (11), a washer (12), a support seat (13), a clamping ring (14), an annular ring (15), a snap ring (16), an elastic pad (17), a connecting rod (18), a fixing plate (19), a disc spring (20), a hydraulic rod (21), a sliding block (22), a retaining ring (23), a lower support cylinder (24), a limiting nut (25), a leak-proof spline groove (26), a leak-proof groove (27), a drill bit body (28), an inner flow channel (29), cutting teeth (30), and a nozzle (31), characterized in that: The upper support cylinder (1) is used to support the internal parts of the tool. The pressure plate (2) is installed on the upper part of the upper support cylinder (1) through external threads. It is used to press down the lower suspension plate (3) and to allow drilling fluid to flow. The pressure plate (2) is annular and hollow in the middle. The suspension plate (3) is set inside the upper support cylinder (1). The lower part of the pressure plate (2) is used to install the clamping nut (4) and bolt (5) and to provide the suspension force for the lower wire rope (9). The spline groove (6) of the suspension plate is set inside the upper support cylinder (1) and is used to install the suspension plate (3). It cooperates with the spline (3-3) of the suspension plate. The clamping nut (4) is set on the upper part of the suspension plate (3) and is used to cooperate with the bolt (5) to fix the bolt (5) and the lower wire rope (9). The bolt (5) is set in the hole (3) of the suspension plate. -1) Inside, the bolt (5) is fastened to the lower wire rope (9) to fix the wire rope (9) to the suspension plate (3). The wire rope (9) is set at the lower part of the bolt (5), the upper part is connected to the bolt (5), and the lower part is connected to the fixing ear (10). It is connected to the suspension block (8) through the fixing ear (10). The fixing ear (10) is set around the suspension block (8). The fixing ear (10) is evenly distributed around the suspension block (8) to fix the wire rope (9) to the suspension block (8). The suspension block (8) is set at the center of the upper support cylinder (1) through the wire rope (9) and the fixing ear (10), and can swing freely. When the upper support cylinder (1) vibrates and swings, the suspension block (8) swings in a certain speed in the direction of the horizontal and vertical swing of the upper support cylinder (1). Moving in the opposite direction creates opposite resistance, reducing the amplitude of drill bit vibration and mitigating drill bit vibration and revolution. A high-strength spring (7) is placed on the wire rope (9). When the suspended weight (8) vibrates and swings vertically, the high-strength spring (7) can buffer the impact force of the suspended weight (8) to absorb the vertical impact energy of the suspended weight (8), reducing the longitudinal vibration and swing of the drill bit and drill tool. A shim (12) is placed between the suspended weight (8) and the spring (11). The shim (12) is connected to the spring (11) and can apply the elastic force of the spring (11) to the suspended weight (8). The spring (11) is placed between the shim (12) and the support seat (13). When the suspended weight (8) swings, the suspended weight (8) will... An impact force is generated on the gasket (12), which then transfers the impact force to the spring (11). The spring (11) buffers and cancels the impact force. The support base (13) is located between the upper support cylinder (1) and the spring (11), applying a portion of the impact force from the spring (11) to the upper support cylinder (1). The clamping ring (14) is located at the lower part of the support base (13) and is connected and fixed to the upper support cylinder (1) by threads to secure the support base (13). The annular ring (15) is located on the lower outer ring of the suspended block (8) to install and fix the elastic pad (17). The annular ring (15) is annular and located around the outer perimeter of the suspended block (8). The elastic pad (17) is fixed on the annular ring (15). When the suspended block (8) swings,The suspended weight (8) will impact the elastic pad (17). The elastic pad (17) is used to absorb the impact energy of the suspended weight (8) and transfer part of the impact force to the connecting rod (18). The connecting rod (18) is set between the annular ring (15) and the upper support cylinder (1), which can transfer part of the impact force of the elastic pad (17) to the upper support cylinder (1). The snap ring (16) is set between the connecting rod (18) and the clamping ring (14) and is clamped on the upper support cylinder (1) for fixing and limiting the connecting rod (18). The fixing plate (19) is set at the lower part of the connecting rod (18). The fixing plate (19) is connected to the upper support cylinder (1) by threads for supporting and clamping the upper connecting rod (18). The hydraulic rod (21) The hydraulic rod (21) is positioned between the suspended weight (8) and the sliding block (22) and is hinged to the suspended weight (8) and the sliding block (22). The hydraulic rod (21) can absorb the swing energy of the suspended weight (8) and transfer the energy to the sliding block (22). The disc springs (20) are positioned on both sides of the sliding block (22). The disc springs (20) can buffer the vertical impact force of the sliding block (22). When the suspended weight (8) swings and collides with the hydraulic rod (21), the hydraulic rod (21) will absorb the swing impact energy of the suspended weight (8) and transfer part of the impact force to the connecting rod (18). The connecting rod (18) transfers the impact force to the sliding block (22), and the sliding block (22) transfers the impact force to the disc springs (20) on the upper and lower sides. The spring (20) can also absorb the impact energy of the suspension block (8). The retaining ring (23) is set at the lower part of the disc spring (20). The retaining ring (23) is installed on the upper support cylinder (1) and is used to support and limit the disc spring (20). The lower support cylinder (24) is set at the lower part of the upper support cylinder (1) and is threadedly connected to the upper support cylinder (1). It is used to support and install internal parts. The anti-leakage groove spline groove (26) is set inside the lower support cylinder (24) and cooperates with the anti-leakage groove spline (27-1). It is used to install the anti-leakage groove (27). The limiting nut (25) is set at the upper part of the anti-leakage groove (27) and is threadedly connected to the lower support cylinder (24). It is used to fix and limit the anti-leakage groove (27). The anti-leakage groove (27) is set at the suspension block (8). 8) In the lower part, a support slope (27-3) is set in the middle of the anti-leakage groove (27). If other components such as the upper suspension block (8) fall off due to erosion or other reasons, the fallen parts will fall onto the support slope (27-3) to prevent the parts from falling further and causing blockage of the lower drilling fluid flow channel, resulting in pump stalling. The drill bit body (28) is set at the lower part of the support lower cylinder (24) and is threadedly connected to the support lower cylinder (24). The inner flow channel (29) is set inside the drill bit body (28) for the flow of drilling fluid. The nozzle (31) is set on the drill bit body (28) and connected to the inner flow channel (29) for spraying high-pressure drilling fluid. The cutting teeth (30) are arranged on the drill bit body (28) for cutting rocks.

2. The downhole drilling tool vibration damping and revolution damping tool according to claim 1, characterized in that: The suspension plate orifice (3-1) is located inside the suspension plate (3) for installing bolts (5). The suspension plate flow channel (3-2) is located inside the suspension plate (3) to provide a drilling fluid flow channel. The suspension plate spline (3-3) is located around the outside of the suspension plate (3) and cooperates with the suspension plate spline groove (6) for installing the suspension plate (3). The anti-leakage groove spline (27-1) is located around the anti-leakage groove (27) and cooperates with the anti-leakage groove spline groove (26) for installing the anti-leakage groove (27). The anti-leakage groove flow channel (27-2) is located around the anti-leakage groove (27) for circulating drilling fluid.

3. The downhole drilling tool vibration damping and revolution damping tool according to claim 1, characterized in that: The gasket (12), spring (11) and support (13) are evenly arranged around the suspended weight (8), and multiple layers can be set up on the top and bottom.

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