Shaft torsion coupling impact drilling speed increasing tool

Abstract

This invention relates to the field of oil drilling tools, specifically a shaft-torsion coupling impact drilling speed-up tool, comprising a housing, an upper water impeller, a torsional impact assembly, a lower water impeller, and an axial impact assembly. The invention features a rational and compact structure. The tool is mounted near the drill bit, with the drill collar connected to the upper part of the housing and the drill bit connected to the lower part. Fluid enters the central channel and impacts the upper water impeller, which drives the upper rotating shaft to rotate. The torsional impact assembly periodically impacts the fixed block circumferentially, thus generating a circumferential impact effect on the outer cylinder, and subsequently on the drill bit below. The fluid continues to flow downwards, impacting the lower water impeller, which drives the lower rotating shaft to rotate. The axial impact assembly periodically impacts the outer cylinder axially, subsequently generating an axial impact effect on the drill bit below. Thus, with the flow of internal fluid, the tool transmits periodic torque and axial impact to the drill bit, accelerating rock breaking speed, reducing drilling cycles, and ultimately saving costs and time.

Description

Technical Field

[0001] This invention relates to the field of oil drilling tool technology, and is a shaft-torsion coupling impact drilling speed-up tool. Background Technology

[0002] As oil exploration and development continue to deepen, there are more and more special and complex wells such as deep wells, ultra-deep wells, and horizontal wells with large displacement, which makes the drilling speed slower and slower, seriously restricting the speed and cost of oil and gas exploration and development.

[0003] During drilling, the contact and friction between the drill string and the wellbore prevent the effective transmission of drilling pressure and torque to the drill bit, resulting in "drag" or "stick-slip" phenomena. These phenomena become increasingly pronounced with increasing well inclination angles, the formation of cuttings beds, and the growing difference between the fluid column pressure in the wellbore and the formation pore pressure. In severe cases, drilling pressure cannot be applied to the drill bit at all, leading to halted drilling or causing stick-slip vibrations in the drill bit, accelerating its damage and failure. Conventional methods for reducing friction and torque between the drill string and the wellbore include optimizing the wellbore structure and mud properties, reducing or avoiding the formation of cuttings beds, improving mud cake quality, and employing rotary steerable drilling and underbalanced or near-balanced drilling methods. However, these techniques all have limitations and their effectiveness is limited.

[0004] Studies have shown that vibration can alter the friction state between friction pairs, reducing their friction coefficient. Vibration drag reduction technology has been widely applied in various engineering fields. As a controllable active drag reduction technology, its application in drill string and wellbore drag reduction overcomes the limitations of conventional friction-reducing torque technologies, representing an important development direction for theoretical research and tool development in high-friction well drilling. Laboratory test results show that among axial, torsional, and lateral vibration modes, axial vibration has a greater drag reduction effect than torsional vibration, which in turn is greater than lateral vibration.

[0005] Domestic and foreign scholars have conducted extensive research on percussion drilling technology and developed a variety of percussion drilling tools. Field applications have shown that percussion drilling tools are highly reliable and have a good speed-up effect. Using torsional or rotary percussion drilling tools can significantly improve the drilling speed in difficult formations. Therefore, research on percussion drilling tools has become a hot topic in recent years, and a variety of torsional and axial percussion drilling tools driven by hydraulic or mechanical means have been developed.

[0006] While existing single-dimensional impact drilling tools can provide axial or torsional impact force to the drill bit to some extent and achieve a certain speed increase, their application effect is not ideal. They suffer from the following technical problems: torsional impact tools provide low impact force, requiring pairing with highly aggressive drill bits to achieve speed and efficiency gains; axial impact tools cause torsional vibration of the drill bit, leading to the risk of tooth breakage, and some axial impact tools have low impact force, failing to achieve the goal of cost reduction and efficiency improvement; existing impact tools have complex structures due to their mechanical impact structure design and sealing rings, and these structures are easily damaged, resulting in short tool life and difficult maintenance; and their use in oil drilling processes suffers from low conversion efficiency, complex structure, and high energy consumption. Summary of the Invention

[0007] This invention provides a shaft-torsion coupling impact drilling speed-up tool that overcomes the shortcomings of the prior art and can effectively solve the problems of low conversion efficiency and high energy consumption of existing drilling speed-up tools.

[0008] The technical solution of this invention is achieved through the following measures: A shaft-torsional coupling impact drilling speed-up tool includes a housing, an upper water impeller, a torsional impact assembly, a lower water impeller, and an axial impact assembly. A central channel running vertically through the inner side of the housing is provided. An installation cavity is formed between the outer side of the central channel and the inner side of the housing. At least one fixing block is fixedly installed circumferentially on the upper inner wall of the installation cavity. An upper rotating shaft with its end located within the installation cavity is rotatably installed on the upper part of the central channel. An upper water impeller is fixedly installed on the outer side of the middle part of the upper rotating shaft. A torsional impact assembly is provided at the end of the upper rotating shaft. After fluid flows through the central channel, it drives the upper water impeller and the upper rotating shaft to rotate. When the upper rotating shaft rotates, the torsional impact assembly periodically impacts the fixing blocks circumferentially. A lower rotating shaft with its end located within the installation cavity is rotatably installed on the lower part of the central channel. A lower water impeller is fixedly installed on the outer side of the middle part of the lower rotating shaft. An axial impact assembly is provided at the end of the lower rotating shaft. After fluid flows through the central channel, it drives the lower water impeller and the lower rotating shaft to rotate. When the lower rotating shaft rotates, the axial impact assembly periodically impacts the housing axially.

[0009] The following are further optimizations and / or improvements to the above-mentioned technical solution:

[0010] The aforementioned torsional impact assembly may include a fixed disc, a first incomplete bevel gear, a second incomplete bevel gear, a third incomplete bevel gear, a fourth incomplete bevel gear, a first impact block, and a second impact block. Two fixed blocks are symmetrically fixed to the upper inner wall of the mounting cavity. A fixed disc is installed on the upper part of the mounting cavity corresponding to the position below the fixed blocks. The first incomplete bevel gear is fixedly installed on the outer left end of the upper rotating shaft, and the second incomplete bevel gear is fixedly installed on the outer right end of the upper rotating shaft. A first mounting shaft is fixedly installed on the upper left side of the fixed disc corresponding to the position below the first incomplete bevel gear. A third incomplete bevel gear capable of intermittently meshing with the first incomplete bevel gear is rotatably mounted on the outer side of the upper part of the shaft. A first impact block is fixed on the outer side of the third incomplete bevel gear. A first compression spring is installed between the right side of the first impact block and the fixed plate. A second mounting shaft is fixedly mounted on the upper right side of the fixed plate corresponding to the position below the second incomplete bevel gear. A fourth incomplete bevel gear capable of intermittently meshing with the second incomplete bevel gear is rotatably mounted on the outer side of the upper part of the second mounting shaft. A second impact block is fixed on the outer side of the fourth incomplete bevel gear. A second compression spring is installed between the left side of the second impact block and the fixed plate.

[0011] When the first incomplete bevel gear meshes with the third incomplete bevel gear, the second incomplete bevel gear does not mesh with the fourth incomplete bevel gear. After the first impact block rotates, it squeezes the first compression spring and strikes the left fixed block after the first incomplete bevel gear separates from the third incomplete bevel gear. When the second incomplete bevel gear meshes with the fourth incomplete bevel gear, the first incomplete bevel gear does not mesh with the third incomplete bevel gear. After the second impact block rotates, it squeezes the second compression spring and strikes the right fixed block after the second incomplete bevel gear separates from the fourth incomplete bevel gear. The axial impact assembly is installed between the lower end of the fixed plate and the lower part of the mounting cavity.

[0012] The aforementioned torsional impact assembly may further include a first guide block and a second guide block. A first arc-shaped groove with an upward opening is provided on the upper left side of the fixed plate. A first guide block with its upper side fixedly installed together with the lower side of the first impact block is slidably installed in the first arc-shaped groove. A first compression spring is installed between the right side of the first guide block and the inner right side of the first arc-shaped groove. A second arc-shaped groove with an upward opening is provided on the upper right side of the fixed plate. A second guide block with its upper side fixedly installed together with the lower side of the second impact block is slidably installed in the second arc-shaped groove. A second compression spring is installed between the left side of the second guide block and the inner left side of the second arc-shaped groove.

[0013] The aforementioned housing may include an outer cylinder, an upper cover, and a lower cover. The upper cover and the lower cover are fixedly installed at intervals on the inner side of the outer cylinder. The upper cover has an inlet that runs vertically through the center of its upper end. An inlet pipe is fixedly installed inside the inlet. The lower part of the inlet pipe gradually decreases in size from top to bottom. The lower cover has an outlet that runs vertically through the center of its lower end. An outlet pipe is fixedly installed inside the outlet. The upper part of the outlet pipe gradually increases in size from top to bottom. A core tube is fixedly connected between the upper end of the outlet pipe and the lower end of the inlet pipe. A central channel is formed inside the core tube. A first eccentric funnel, which is larger at the top and smaller at the bottom, is fixedly installed in the central channel corresponding to the position above the upper water wheel. A second eccentric funnel, which is larger at the top and smaller at the bottom, is fixedly installed in the central channel corresponding to the position between the upper and lower water wheels. An installation cavity is formed between the outer side of the core tube, the inner side of the outer cylinder, the lower end of the upper cover, and the upper end of the lower cover. A fixing plate is installed between the outer side of the core tube and the inner side of the outer cylinder.

[0014] The cross-section of the aforementioned central passage can be rectangular.

[0015] The aforementioned axial impact assembly may include a support plate, a first incomplete gear, a second incomplete gear, a left guide rod, a right guide rod, a third compression spring, and a fourth compression spring. A support plate is fixedly installed on the upper side of the lower cover. A first incomplete gear is fixedly installed on the outer side of the left end of the lower rotating shaft, and a second incomplete gear is fixedly installed on the outer side of the right end of the lower rotating shaft. A left guide rod and a right guide rod are symmetrically fixedly installed on the upper end of the support plate corresponding to the rear position of the core tube and the lower side of the fixed plate. A left impact hammer is slidably installed on the outer side of the left guide rod along the vertical direction. A left rack that can intermittently mesh with the first incomplete gear is fixed on the front side of the left impact hammer. A third compression spring fitted on the outer side of the left guide rod is installed on the upper part of the left impact hammer. A right impact hammer is slidably installed on the outer side of the right guide rod along the vertical direction. A right rack that can intermittently mesh with the second incomplete gear is fixed on the front side of the right impact hammer. A fourth compression spring fitted on the outer side of the right guide rod is installed on the upper part of the right impact hammer.

[0016] When the first incomplete gear meshes with the left rack, the second incomplete gear does not mesh with the right rack. The left hammer moves upward to compress the third compression spring and then strikes the upper left side of the support plate after the first incomplete gear separates from the left rack. When the second incomplete gear meshes with the right rack, the first incomplete gear does not mesh with the left rack. The right hammer moves upward to compress the fourth compression spring and then strikes the upper right side of the support plate after the second incomplete gear separates from the right rack.

[0017] The lower inner side of the left hammer may be provided with a stepped surface, and the lower part of the third compression spring is installed on the stepped surface. The right hammer has the same structure as the left hammer.

[0018] The inner side of the outer cylinder has several support rods distributed at intervals along the circumference. The upper end of the support rod is in contact with the lower side of the upper cover, and the lower end of the support rod is in contact with the upper side of the lower cover. A limiting groove is provided on the outer side of the fixing plate corresponding to the position of each support rod. Several connecting rods are fixedly installed at intervals between the lower side of the support plate and the upper side of the lower cover.

[0019] This invention features a rational and compact structure. The tool is mounted near the drill bit, with the drill collar connected to the upper part of the housing and the drill bit connected to the lower part. During drilling, fluid enters the central channel and impacts the upper water impeller. The upper water impeller rotates under the impact of the fluid, driving the upper rotating shaft to rotate. As the upper rotating shaft rotates, the torsional impact assembly periodically impacts the fixed block circumferentially, thus generating a circumferential impact effect on the outer cylinder. This, in turn, generates a circumferential impact effect on the drill bit below, repeating the cycle. The fluid continues to flow downwards, impacting the lower water impeller. The lower water impeller rotates under the impact of the fluid, driving the lower rotating shaft to rotate. As the lower rotating shaft rotates, the axial impact assembly periodically impacts the outer cylinder axially, thus generating an axial impact effect on the drill bit below, repeating the cycle. In this way, with the flow of internal fluid, the tool transmits periodic torque and axial impact to the drill bit, accelerating the drill bit's rock-breaking speed, reducing the drilling cycle, and thereby saving costs and time. Attached Figure Description

[0020] Appendix Figure 1 These are schematic diagrams of the main cross-sectional structure of embodiments one to eight of the present invention.

[0021] Appendix Figure 2 This is a schematic diagram of the right-side cross-sectional structure of embodiments one to eight of the present invention.

[0022] Appendix Figure 3 For the appendix Figure 2 Enlarged cross-sectional view of section AA.

[0023] Appendix Figure 4 For the appendix Figure 2 Enlarged cross-sectional view of the structure at point BB.

[0024] Appendix Figure 5 For the appendix Figure 4 Enlarged cross-sectional view of the structure at point CC.

[0025] Appendix Figure 6 This is a three-dimensional structural diagram of the upper water turbine in embodiments one to eight of the present invention.

[0026] Appendix Figure 7 This is a three-dimensional structural diagram of the first incomplete bevel gear in embodiments two to eight of the present invention.

[0027] Appendix Figure 8 This is a three-dimensional structural diagram of the third incomplete bevel gear in embodiments two to eight of the present invention.

[0028] Appendix Figure 9 This is a three-dimensional structural diagram of the fixed disk in embodiments three to eight of the present invention.

[0029] Appendix Figure 10 This is a three-dimensional structural diagram of the outer cylinder in embodiments four to eight of the present invention.

[0030] Appendix Figure 11 This is a three-dimensional structural diagram of the liquid inlet pipe in embodiments four to eight of the present invention.

[0031] Appendix Figure 12 This is a three-dimensional structural diagram of the first eccentric funnel in embodiments four to eight of the present invention.

[0032] Appendix Figure 13 This is a three-dimensional structural diagram of the support plate in embodiments six to eight of the present invention.

[0033] Appendix Figure 14 This is a schematic diagram of the right-side cross-sectional structure of the left punch in embodiments six to eight of the present invention.

[0034] The codes in the attached diagram are as follows: 1 for upper waterwheel, 2 for mounting cavity, 3 for fixing block, 4 for upper rotating shaft, 5 for lower waterwheel, 6 for lower rotating shaft, 7 for central channel, 8 for fixing plate, 9 for first incomplete bevel gear, 10 for second incomplete bevel gear, 11 for third incomplete bevel gear, 12 for fourth incomplete bevel gear, 13 for first impact block, 14 for second impact block, 15 for first mounting shaft, 16 for second mounting shaft, 17 for first compression spring, 18 for second compression spring, 19 for first guide block, 20 for second guide block, and 21 for the second incomplete bevel gear. 21 is an arc-shaped groove, 22 is a second arc-shaped groove, 23 is an outer cylinder, 24 is an upper cover, 25 is a lower cover, 26 is an inlet pipe, 27 is an outlet pipe, 28 is a core tube, 29 is a first eccentric funnel, 30 is a second eccentric funnel, 31 is a support plate, 32 is a first incomplete gear, 33 is a second incomplete gear, 34 is a left guide rod, 35 is a right guide rod, 36 is a third compression spring, 37 is a fourth compression spring, 38 is a left punch, 39 is a right punch, 40 is a left rack, 41 is a right rack, 42 ​​is a stepped surface, 43 is a support rod, and 44 is a connecting rod. Detailed Implementation

[0035] The present invention is not limited to the following embodiments, and the specific implementation can be determined according to the technical solution of the present invention and the actual situation.

[0036] In this invention, for ease of description, the description of the relative positions of the components is based on the appendix to the specification. Figure 1 The layout is described using a diagrammatic method, such as the positional relationships of front, back, top, bottom, left, and right, which are based on the instructions attached. Figure 1 The orientation of the layout is determined by the direction of the map.

[0037] The present invention will be further described below with reference to embodiments and accompanying drawings:

[0038] Example 1: As shown in the attached document Figures 1 to 5As shown, the shaft-torsion coupling impact drilling speed-up tool includes a housing, an upper water impeller 1, a torsional impact assembly, a lower water impeller 5, and an axial impact assembly. A central channel 7 runs vertically through the inner side of the housing. An installation cavity 2 is formed between the outer side of the central channel 7 and the inner side of the housing. At least one fixing block 3 is fixedly installed circumferentially on the upper inner wall of the installation cavity 2. An upper rotating shaft 4, with its end located within the installation cavity 2, is rotatably mounted on the upper part of the central channel 7. The upper water impeller 1 is fixedly installed on the outer side of the middle part of the upper rotating shaft 4. The upper rotating shaft 4 has a torsional impact assembly at its end. When the fluid flows through the central channel 7, it drives the upper water wheel 1 and the upper rotating shaft 4 to rotate. When the upper rotating shaft 4 rotates, the torsional impact assembly periodically impacts the fixed block 3 circumferentially. The lower rotating shaft 6, with its end located in the mounting cavity 2, is rotatably installed at the lower part of the central channel 7. The lower water wheel 5 is fixedly installed on the outer side of the middle part of the lower rotating shaft 6. An axial impact assembly is installed at the end of the lower rotating shaft 6. When the fluid flows through the central channel 7, it drives the lower water wheel 5 and the lower rotating shaft 6 to rotate. When the lower rotating shaft 6 rotates, the axial impact assembly periodically impacts the housing axially.

[0039] According to the requirements, both the upper water turbine 1 and the lower water turbine 5 are existing known technologies. The blades of the upper water turbine 1 and the lower water turbine 5 are both arc-shaped. In this way, when the fluid impacts the blades of the water turbine, the blades effectively convert the fluid kinetic energy into rotational mechanical energy, thereby improving the energy capture efficiency.

[0040] During use, the shaft-torsion coupling impact drilling speed-up tool is installed near the drill bit. The upper part of the housing is connected to the drill collar, and the lower part of the housing is connected to the drill bit. During drilling, the fluid enters the upper part of the central channel 7 and impacts the upper water wheel 1. The upper water wheel 1 rotates under the impact of the fluid, which drives the upper rotating shaft 4 to rotate. When the upper rotating shaft 4 rotates, the torsional impact assembly periodically impacts the fixed block 3 circumferentially, thereby generating a circumferential impact effect on the outer cylinder 23. This then generates a circumferential impact effect on the drill bit below, and the cycle repeats. The fluid continues to flow downwards and impacts the lower water wheel 5. The lower water wheel 5 rotates under the impact of the fluid, which drives the lower rotating shaft 6 to rotate. When the lower rotating shaft 6 rotates, the axial impact assembly periodically impacts the outer cylinder 23 axially, which then generates an axial impact effect on the drill bit below, and the cycle repeats. In this way, with the flow of the internal fluid, the shaft-torsion coupling impact drilling speed-up tool will transmit periodic torque and axial impact to the drill bit, accelerating the drill bit's rock-breaking speed, reducing the drilling cycle, and thus saving costs and time.

[0041] The above-mentioned shaft-torsion coupling impact drilling speed-up tool can be further optimized and / or improved according to actual needs:

[0042] Example 2: As an optimization of the above examples, as shown in the appendix. Figures 1 to 3As shown in Figures 5 to 10, the torsional impact assembly includes a fixed disc 8, a first incomplete bevel gear 9, a second incomplete bevel gear 10, a third incomplete bevel gear 11, a fourth incomplete bevel gear 12, a first impact block 13, and a second impact block 14. Two fixed blocks 3 are symmetrically fixedly installed on the upper inner wall of the mounting cavity 2. A fixed disc 8 is installed on the upper part of the mounting cavity 2 corresponding to the position below the fixed blocks 3. The first incomplete bevel gear 9 is fixedly installed on the outer side of the left end of the upper rotating shaft 4, and the second incomplete bevel gear 10 is fixedly installed on the outer side of the right end of the upper rotating shaft 4. A first mounting shaft 15 is fixedly installed on the upper left side of the fixed disc 8 corresponding to the position below the first incomplete bevel gear 9. A third incomplete bevel gear 11, capable of intermittently meshing with the first incomplete bevel gear 9, is rotatably mounted on the upper outer side of the 5. A first impact block 13 is fixed to the outer side of the third incomplete bevel gear 11. A first compression spring 17 is installed between the right side of the first impact block 13 and the fixed disk 8. A second mounting shaft 16 is fixedly mounted on the upper right side of the fixed disk 8, corresponding to the position below the second incomplete bevel gear 10. A fourth incomplete bevel gear 12, capable of intermittently meshing with the second incomplete bevel gear 10, is rotatably mounted on the upper outer side of the second mounting shaft 16. A second impact block 14 is fixed to the outer side of the fourth incomplete bevel gear 12. A second compression spring 18 is installed between the left side of the second impact block 14 and the fixed disk 8.

[0043] When the first incomplete bevel gear 9 meshes with the third incomplete bevel gear 11, the second incomplete bevel gear 10 does not mesh with the fourth incomplete bevel gear 12. After the first impact block 13 rotates, it squeezes the first compression spring 17 and, after the first incomplete bevel gear 9 and the third incomplete bevel gear 11 separate, it impacts the left fixed block 3. When the second incomplete bevel gear 10 meshes with the fourth incomplete bevel gear 12, the first incomplete bevel gear 9 and the third incomplete bevel gear 11 do not mesh. After the second impact block 14 rotates, it squeezes the second compression spring 18 and, after the second incomplete bevel gear 10 and the fourth incomplete bevel gear 12 separate, it impacts the right fixed block 3. The axial impact assembly is installed between the lower end of the fixed plate 8 and the lower part of the mounting cavity 2.

[0044] According to the requirements, the first compression spring 17 and the second compression spring 18 have the same structure. Both the first compression spring 17 and the second compression spring 18 are cylindrical compression springs. The weight of the first impact block 13 and the second impact block 14 can be adjusted as needed. For example, a counterweight can be connected to the side of the first impact block 13 and the side of the second impact block 14 by bolts. This can change the impact force between the first impact block 13 and the second impact block 14 and the fixed block 3.

[0045] During use, when the first incomplete bevel gear 9 and the third incomplete bevel gear 11 separate from each other, the compression of the first compression spring 17 is at its maximum. At this time, the first compression spring 17 resets and pushes the first impact block 13 to rotate clockwise. After the first guide block 19 rotates clockwise by a certain angle, the rear side of the first impact block 13 collides with the front side of the left fixed block 3, thereby generating an impact effect on the outer cylinder 23 in the circumferential direction. At the same time, the second incomplete bevel gear 10 and the fourth incomplete bevel gear 12 mesh with each other. When the fourth incomplete bevel gear 12 rotates, it drives the second impact block 14 to rotate clockwise. The second impact block 14 begins to squeeze the second compression spring 18.

[0046] When the second incomplete bevel gear 10 and the fourth incomplete bevel gear 12 separate from each other, the compression of the second compression spring 18 is at its maximum. At this time, the second compression spring 18 resets and pushes the second impact block 14 to rotate counterclockwise. After the second impact block 14 rotates counterclockwise by a certain angle, the rear side of the second impact block 14 collides with the front side of the right fixed block 3, thereby generating an impact effect on the outer cylinder 23 in the circumferential direction. The direction of the collision between the rear side of the second impact block 14 and the front side of the right fixed block 3 is opposite to the direction of the collision between the rear side of the first impact block 13 and the front side of the left fixed block 3.

[0047] When the second incomplete bevel gear 10 and the fourth incomplete bevel gear 12 separate from each other, the first incomplete bevel gear 9 and the third incomplete bevel gear 11 mesh with each other. When the third incomplete bevel gear 11 rotates, it drives the first impact block 13 to rotate counterclockwise. The first impact block 13 begins to squeeze the first compression spring 17. When the first incomplete bevel gear 9 and the third incomplete bevel gear 11 separate from each other, the compression of the first compression spring 17 is at its maximum. This process repeats, and the first impact block 13 and the second impact block 14 alternately strike the fixed blocks 3 on the left and right sides. The impact forces on the fixed blocks 3 on the left and right sides are in opposite directions. This can generate torque or circumferential impact on the drill bit connected to the bottom of the housing. At the same time, the alternating meshing of the incomplete bevel gears can also ensure that the upper water wheel 1 will not jam due to excessive resistance.

[0048] Example 3: As an optimization of the above examples, as shown in the appendix. Figure 1 , 3As shown in Figures 5 and 9, the torsional impact assembly also includes a first guide block 19 and a second guide block 20. The upper left side of the fixed plate 8 is provided with an upward-opening first arc-shaped groove 21. The first guide block 19, which is fixedly installed on the lower side of the first impact block 13, is slidably installed in the first arc-shaped groove 21. The first compression spring 17 is installed between the right side of the first guide block 19 and the inner right side of the first arc-shaped groove 21. The upper right side of the fixed plate 8 is provided with an upward-opening second arc-shaped groove 22. The second guide block 20, which is fixedly installed on the lower side of the second impact block 14, is slidably installed in the second arc-shaped groove 22. The second compression spring 18 is installed between the left side of the second guide block 20 and the inner left side of the second arc-shaped groove 22.

[0049] According to requirements, the first arc-shaped groove 21 is coaxially arranged with the first mounting shaft 15, and the second arc-shaped groove 22 is coaxially arranged with the second mounting shaft 16. During use, when the first incomplete bevel gear 9 and the third incomplete bevel gear 11 separate from each other, the compression of the first compression spring 17 is at its maximum. At this time, the first compression spring 17 resets and pushes the first guide block 19 to rotate clockwise. After the first guide block 19 rotates clockwise along the first arc-shaped groove 21 at a certain angle, the rear side of the first impact block 13 collides with the front side of the left fixed block 3. At the same time, the second incomplete bevel gear 10 and the fourth incomplete bevel gear 12 mesh with each other. When the fourth incomplete bevel gear 12 rotates, it drives the second impact block 14 to rotate clockwise. The second guide block 20 rotates in the second arc-shaped groove 22 and begins to compress the second compression spring 18.

[0050] When the second incomplete bevel gear 10 and the fourth incomplete bevel gear 12 separate from each other, the compression of the second compression spring 18 is at its maximum. At this time, the second compression spring 18 resets and pushes the second guide block 20 to rotate counterclockwise. After the second guide block 20 rotates counterclockwise by a certain angle, the rear side of the second impact block 14 collides with the front side of the right-side fixed block 3.

[0051] When the second incomplete bevel gear 10 and the fourth incomplete bevel gear 12 separate from each other, the first incomplete bevel gear 9 and the third incomplete bevel gear 11 mesh with each other. When the third incomplete bevel gear 11 rotates, it drives the first impact block 13 to rotate counterclockwise. The first impact block 13 begins to squeeze the first compression spring 17. When the first incomplete bevel gear 9 and the third incomplete bevel gear 11 separate from each other, the compression of the first compression spring 17 is at its maximum. This process repeats, and the first impact block 13 and the second impact block 14 alternately strike the fixed blocks 3 on the left and right sides.

[0052] Example 4: As an optimization of the above examples, as shown in the appendix. Figures 1 to 5As shown in Figure 10, the shell includes an outer cylinder 23, an upper cover 24, and a lower cover 25. The upper cover 24 and the lower cover 25 are fixedly installed at intervals on the inner side of the outer cylinder 23. The upper cover 24 has an inlet that runs vertically through the center of its upper end, and an inlet pipe 26 is fixedly installed inside the inlet. The lower part of the inlet pipe 26 gradually tapers from top to bottom. The lower cover 25 has an outlet that runs vertically through the center of its lower end, and an outlet pipe 27 is fixedly installed inside the outlet. The upper part of the outlet pipe 27 gradually tapers from top to bottom. The upper end of the outlet pipe 27 is connected to the lower end of the inlet pipe 26. A core tube 28 is fixedly connected between the upper and lower water impellers 1. A central channel 7 is formed inside the core tube 28. A first eccentric funnel 29, which is larger at the top and smaller at the bottom, is fixedly installed in the central channel 7, which is larger at the top and smaller at the bottom. A second eccentric funnel 30, which is larger at the top and smaller at the bottom, is fixedly installed in the central channel 7, which is between the upper water impeller 1 and the lower water impeller 5. An installation cavity 2 is formed between the outer side of the core tube 28, the inner side of the outer cylinder 23, the lower end of the upper cover 24, and the upper end of the lower cover 25. A fixing plate 8 is installed between the outer side of the core tube 28 and the inner side of the outer cylinder 23.

[0053] According to the requirements, the upper part of the inlet pipe 26 and the lower part of the outlet pipe 27 are both circular in cross-section, the core tube 28 has a rectangular cross-section, the lower part of the inlet pipe 26 and the upper part of the core tube 28 are smoothly connected, and the lower part of the core tube 28 and the upper part of the outlet pipe 27 are smoothly connected. The first eccentric funnel 29 and the second eccentric funnel 30 have rectangular cross-sections, and the upper water wheel 1 and the lower water wheel 5 have the same structure.

[0054] During use, the outlet pipe 27 can increase the flow rate of the fluid entering the central channel 7. After passing through the first eccentric funnel 29, the fluid speed increases again. At the same time, the first eccentric funnel 29 concentrates the fluid below it, which can impact the upper water wheel 1. The upper water wheel 1 rotates under the impact of the fluid. The upper water wheel 1 drives the first incomplete bevel gear 9 and the second incomplete bevel gear 10 to rotate through the upper rotating shaft 4. The first incomplete bevel gear 9 and the second incomplete bevel gear 10 alternately mesh with the third incomplete bevel gear 11 and the fourth incomplete bevel gear 12. After the third incomplete bevel gear 11 and the fourth incomplete bevel gear 12 rotate alternately, the first compression spring 17 and the second compression spring 18 are alternately compressed and stored. When the third incomplete bevel gear 11 and the fourth incomplete bevel gear 12 stop rotating, the first compression spring 17 and the second compression spring 18 alternately reset and cause the impact block and the fixed block 3 to collide with each other through the guide block, thereby producing a circumferential impact effect on the outer cylinder 23.

[0055] Example 5: As an optimization of the above examples, as shown in the appendix. Figures 1 to 5 As shown in Figures 9, 11, 12, and 13, the cross-section of the central passage 7 is rectangular.

[0056] During use, this setup facilitates the construction of the central channel 7, as well as the installation of the upper waterwheel 1, lower waterwheel 5, first eccentric funnel 29, and second eccentric funnel 30.

[0057] Example 6: As an optimization of the above examples, as shown in the appendix Figures 1 to 5 As shown in Figures 13 and 14, the axial impact assembly includes a support plate 31, a first incomplete gear 32, a second incomplete gear 33, a left guide rod 34, a right guide rod 35, a third compression spring 36, and a fourth compression spring 37. The support plate 31 is fixedly installed on the upper side of the lower cover 25. The first incomplete gear 32 is fixedly installed on the outer side of the left end of the lower rotating shaft 6, and the second incomplete gear 33 is fixedly installed on the outer side of the right end of the lower rotating shaft 6. The left guide rod 34 is symmetrically fixedly installed between the upper end of the support plate 31 corresponding to the position behind the core tube 28 and the lower side of the fixed plate 8. A left punch 38 is slidably mounted on the outer side of the right guide rod 35 and the left guide rod 34 along the vertical direction. A left rack 40 that can intermittently mesh with the first incomplete gear 32 is fixed to the front side of the left punch 38. A third compression spring 36 that is fitted on the outer side of the left guide rod 34 is mounted on the upper part of the left punch 38. A right punch 39 is slidably mounted on the outer side of the right guide rod 35 along the vertical direction. A right rack 41 that can intermittently mesh with the second incomplete gear 33 is fixed to the front side of the right punch 39. A fourth compression spring 37 that is fitted on the outer side of the right guide rod 35 is mounted on the upper part of the right punch 39.

[0058] When the first incomplete gear 32 meshes with the left rack 40, the second incomplete gear 33 does not mesh with the right rack 41. The left hammer 38 moves upward to compress the third compression spring 36 and then strikes the upper left side of the support plate 31 after the first incomplete gear 32 separates from the left rack 40. When the second incomplete gear 33 meshes with the right rack 41, the first incomplete gear 32 does not mesh with the left rack 40. The right hammer 39 moves upward to compress the fourth compression spring 37 and then strikes the upper right side of the support plate 31 after the second incomplete gear 33 separates from the right rack 41.

[0059] According to the requirements, the third compression spring 36 and the fourth compression spring 37 are both existing cylindrical compression springs. The first incomplete gear 32 and the second incomplete gear 33 have the same structure. The first incomplete gear 32 and the second incomplete gear 33 are alternately fixed at both ends of the lower rotating shaft 6. The left punch 38 and the left rack 40 are integrally set, and the right punch 39 and the right rack 41 are integrally set.

[0060] After the fluid passes through the second eccentric funnel 30, it impacts the lower water wheel 5. The lower water wheel 5 rotates under the impact of the fluid. The lower water wheel 5 drives the first incomplete gear 32 and the second incomplete gear 33 to rotate through the lower rotating shaft 6. The first incomplete gear 32 and the second incomplete gear 33 alternately mesh with the left rack 40 and the right rack 41. After the first incomplete gear 32 and the second incomplete gear 33 rotate alternately, the third compression spring 36 and the fourth compression spring 37 are alternately compressed and store energy. When the first incomplete gear 32 and the second incomplete gear 33 stop rotating, the third compression spring 36 and the fourth compression spring 37 alternately reset, causing the left hammer 38 and the right hammer 39 to alternately strike the support plate 31, thereby generating an axial impact effect on the outer cylinder 23; then generating an axial impact effect on the drill bit below, and so on.

[0061] Simultaneously, the shape and weight of the left hammer 38 and the right hammer 39 can be changed. The stroke of the left hammer 38 and the right hammer 39 can also be changed by adding a gear mechanism between the lower rotating shaft 6 and the left rack 40 and the right rack 41, thereby changing the kinetic energy or impact frequency of the left hammer 38 and the right hammer 39. For example, first install reduction gears at both ends of the lower rotating shaft 6, and then install a reduction shaft between the lower rotating shaft 6 and the rack. The first incomplete gear 32 and the second incomplete gear 33 are installed on the reduction shaft and mesh with the reduction gear (when they mesh, the speed of the reduction shaft is less than the speed of the lower rotating shaft 6). In this way, by adding a gear mechanism, the stroke of the left hammer 38 and the right hammer 39 can be changed, thereby changing their kinetic energy.

[0062] Example 7: As an optimization of the above examples, as shown in the appendix. Figure 1 , 2 As shown in Figures 4, 5, and 14, the lower inner side of the left hammer 38 is provided with a stepped surface 42, and the lower part of the third compression spring 36 is installed on the stepped surface 42. The right hammer 39 has the same structure as the left hammer 38.

[0063] The step surface 42 can support and limit the third compression spring 36 and the fourth compression spring 37, preventing them from wearing against each other with the left guide rod 34 and the right guide rod 35 respectively, thus extending their service life and reducing maintenance costs.

[0064] Example 8: As an optimization of the above examples, as shown in the appendix Figures 1 to 5 As shown in Figure 13, several support rods 43 are distributed circumferentially on the inner side of the outer cylinder 23. The upper end of the support rod 43 is in contact with the lower side of the upper cover 24, and the lower end of the support rod 43 is in contact with the upper side of the lower cover 25. A limiting groove is provided on the outer side of the fixing plate 8 corresponding to the position of each support rod 43. Several connecting rods 44 are fixedly installed at intervals between the lower side of the support plate 31 and the upper side of the lower cover 25.

[0065] During use, the connecting rod 44 can improve the connection strength between the lower cover 25 and the support plate 31. After the left hammer 38 and the right hammer 39 move downward, they act on the upper side of the support plate 31 and can transmit axial impact force to the lower cover 25 through the connecting rod 44. The support plate 31 is also easy to replace and maintain, reducing the degree of damage to the lower cover 25.

[0066] The above technical features constitute various embodiments of the present invention, which have strong adaptability and implementation effect. Unnecessary technical features can be added or removed according to actual needs to meet the needs of different situations.

[0067] The preferred embodiment of the present invention is as follows: The tool is installed near the drill bit. The upper part of the outer cylinder 23 is connected to the drill collar, and the lower part of the outer cylinder 23 is connected to the drill bit. During drilling, the first eccentric funnel 29 concentrates the fluid below the first eccentric funnel 29. The fluid impacts the upper water wheel 1, causing the upper water wheel 1 to rotate under the impact of the fluid. The upper water wheel 1 drives the first incomplete bevel gear 9 and the second incomplete bevel gear 10 to rotate via the upper rotating shaft 4. The first incomplete bevel gear 9 and the second incomplete bevel gear 10 alternately rotate with the third incomplete bevel gear 11 and the fourth incomplete bevel gear 10. The incomplete bevel gears 12 mesh with each other. After the third incomplete bevel gear 11 and the fourth incomplete bevel gear 12 rotate alternately, the first compression spring 17 and the second compression spring 18 are alternately compressed and stored energy. When the third incomplete bevel gear 11 and the fourth incomplete bevel gear 12 stop rotating, the first compression spring 17 and the second compression spring 18 alternately reset and then cause the impact block and the fixed block 3 to collide with each other through the guide block, thereby generating a circumferential impact effect on the outer cylinder 23; then generating a circumferential impact effect on the drill bit below, and so on.

[0068] After the fluid flows downward through the second eccentric funnel 30, it impacts the lower water wheel 5. The lower water wheel 5 rotates under the impact of the fluid. The lower water wheel 5 drives the first incomplete gear 32 and the second incomplete gear 33 to rotate through the lower rotating shaft 6. The first incomplete gear 32 and the second incomplete gear 33 alternately mesh with the left rack 40 and the right rack 41. After the first incomplete gear 32 and the second incomplete gear 33 rotate alternately, the third compression spring 36 and the fourth compression spring 37 are alternately compressed and store energy. When the first incomplete gear 32 and the second incomplete gear 33 stop rotating, the third compression spring 36 and the fourth compression spring 37 alternately reset, causing the left hammer 38 and the right hammer 39 to alternately strike the support plate 31, thereby generating an axial impact on the outer cylinder 23; then generating an axial impact effect on the drill bit below, and so on.

[0069] As the internal fluid flows, the tool transmits periodic torque and axial impact to the drill bit, accelerating rock breaking and reducing drilling cycles, thereby saving costs and time.

Claims

1. A shaft-torsion coupling impact drilling speed-up tool, characterized in that... The device includes a shell, an upper water impeller, a torsional impact assembly, a lower water impeller, and an axial impact assembly. The shell has a central channel running vertically through it. A mounting cavity is formed between the outer side of the central channel and the inner side of the shell. An upper rotating shaft with its end located within the mounting cavity is rotatably mounted on the upper part of the central channel. An upper water impeller is fixedly mounted on the outer side of the middle portion of the upper rotating shaft. The torsional impact assembly is located at the end of the upper rotating shaft. Fluid flowing through the central channel drives the upper water impeller and the upper rotating shaft to rotate. When the upper rotating shaft rotates, the torsional impact assembly periodically impacts the fixed block circumferentially. A lower rotating shaft with its end located within the mounting cavity is rotatably mounted on the lower part of the central channel. A lower water impeller is fixedly mounted on the outer side of the middle portion of the lower rotating shaft. An axial impact assembly is located at the end of the lower rotating shaft. Fluid flowing through the central channel drives the lower water impeller and the lower rotating shaft to rotate. When the lower rotating shaft rotates, the axial impact assembly periodically impacts the shell axially. The torsional impact assembly includes a fixed disc, a first incomplete bevel gear, a second incomplete bevel gear, a third incomplete bevel gear, a fourth incomplete bevel gear, a first impact block, and a second impact block. Two fixed blocks are symmetrically fixed to the upper inner wall of the mounting cavity. A fixed disc is installed on the upper part of the mounting cavity corresponding to the position below the fixed blocks. The first incomplete bevel gear is fixedly installed on the outer left end of the upper rotating shaft, and the second incomplete bevel gear is fixedly installed on the outer right end of the upper rotating shaft. A first mounting shaft is fixedly installed on the upper left side of the fixed disc corresponding to the position below the first incomplete bevel gear. A third incomplete bevel gear capable of intermittently meshing with the first incomplete bevel gear is rotatably mounted on the outer side of the part. A first impact block is fixed on the outer side of the third incomplete bevel gear. A first compression spring is installed between the right side of the first impact block and the fixed plate. A second mounting shaft is fixedly mounted on the upper right side of the fixed plate corresponding to the position below the second incomplete bevel gear. A fourth incomplete bevel gear capable of intermittently meshing with the second incomplete bevel gear is rotatably mounted on the outer side of the upper part of the second mounting shaft. A second impact block is fixed on the outer side of the fourth incomplete bevel gear. A second compression spring is installed between the left side of the second impact block and the fixed plate. When the first incomplete bevel gear meshes with the third incomplete bevel gear, the second incomplete bevel gear does not mesh with the fourth incomplete bevel gear. After the first impact block rotates, it squeezes the first compression spring and strikes the left fixed block after the first incomplete bevel gear separates from the third incomplete bevel gear. When the second incomplete bevel gear meshes with the fourth incomplete bevel gear, the first incomplete bevel gear does not mesh with the third incomplete bevel gear. After the second impact block rotates, it squeezes the second compression spring and strikes the right fixed block after the second incomplete bevel gear separates from the fourth incomplete bevel gear. The axial impact assembly is installed between the lower end of the fixed plate and the lower part of the mounting cavity. The first and second impact blocks alternately strike the fixed blocks on the left and right sides, and the impact forces on the fixed blocks on the left and right sides are in opposite directions. A first eccentric funnel, larger at the top and smaller at the bottom, is fixedly installed in the central channel above the upper waterwheel, and a second eccentric funnel, larger at the top and smaller at the bottom, is fixedly installed in the central channel between the upper and lower waterwheels.

2. The shaft-torsion coupling impact drilling speed-up tool according to claim 1, characterized in that... The torsional impact assembly also includes a first guide block and a second guide block. The upper left side of the fixed plate is provided with a first arc-shaped groove with an upward opening. The first guide block, whose upper side is fixedly installed together with the lower side of the first impact block, is slidably installed in the first arc-shaped groove. The first compression spring is installed between the right side of the first guide block and the inner right side of the first arc-shaped groove. The upper right side of the fixed plate is provided with a second arc-shaped groove with an upward opening. The second guide block, whose upper side is fixedly installed together with the lower side of the second impact block, is slidably installed in the second arc-shaped groove. The second compression spring is installed between the left side of the second guide block and the inner left side of the second arc-shaped groove.

3. The shaft-torsion coupling impact drilling speed-up tool according to claim 1 or 2, characterized in that... The shell includes an outer cylinder, an upper cover, and a lower cover. The upper cover and the lower cover are fixedly installed at intervals on the inner side of the outer cylinder. The upper cover has an inlet that runs vertically through the center of the upper end. An inlet pipe is fixedly installed inside the inlet. The lower part of the inlet pipe gradually decreases in size from top to bottom. The lower cover has an outlet that runs vertically through the center of the lower end. An outlet pipe is fixedly installed inside the outlet. The upper part of the outlet pipe gradually increases in size from top to bottom. A core tube is fixedly connected between the upper end of the outlet pipe and the lower end of the inlet pipe. A central channel is formed on the inner side of the core tube. An installation cavity is formed between the outer side of the core tube, the inner side of the outer cylinder, the lower end of the upper cover, and the upper end of the lower cover. A fixing plate is installed between the outer side of the core tube and the inner side of the outer cylinder.

4. The shaft-torsion coupling impact drilling speed-up tool according to claim 3, characterized in that... The central passage has a rectangular cross-section.

5. The shaft-torsion coupling impact drilling speed-up tool according to claim 3, characterized in that... The axial impact assembly includes a support plate, a first incomplete gear, a second incomplete gear, a left guide rod, a right guide rod, a third compression spring, and a fourth compression spring. The support plate is fixedly installed on the upper side of the lower cover. The first incomplete gear is fixedly installed on the outer side of the left end of the lower rotating shaft, and the second incomplete gear is fixedly installed on the outer side of the right end of the lower rotating shaft. The left and right guide rods are symmetrically fixedly installed on the upper part of the support plate corresponding to the rear position of the core tube and the lower side of the fixed plate. A left impact hammer is slidably installed on the outer side of the left guide rod along the vertical direction. A left rack that can intermittently mesh with the first incomplete gear is fixed on the front side of the left impact hammer. A third compression spring is installed on the upper part of the left impact hammer and fitted on the outer side of the left guide rod. A right impact hammer is slidably installed on the outer side of the right guide rod along the vertical direction. A right rack that can intermittently mesh with the second incomplete gear is fixed on the front side of the right impact hammer. A fourth compression spring is installed on the upper part of the right impact hammer and fitted on the outer side of the right guide rod. When the first incomplete gear meshes with the left rack, the second incomplete gear does not mesh with the right rack. The left hammer moves upward to compress the third compression spring and then strikes the upper left side of the support plate after the first incomplete gear separates from the left rack. When the second incomplete gear meshes with the right rack, the first incomplete gear does not mesh with the left rack. The right hammer moves upward to compress the fourth compression spring and then strikes the upper right side of the support plate after the second incomplete gear separates from the right rack.

6. The shaft-torsion coupling impact drilling speed-up tool according to claim 4, characterized in that... The axial impact assembly includes a support plate, a first incomplete gear, a second incomplete gear, a left guide rod, a right guide rod, a third compression spring, and a fourth compression spring. The support plate is fixedly installed on the upper side of the lower cover. The first incomplete gear is fixedly installed on the outer side of the left end of the lower rotating shaft, and the second incomplete gear is fixedly installed on the outer side of the right end of the lower rotating shaft. The left and right guide rods are symmetrically fixedly installed on the upper part of the support plate corresponding to the rear position of the core tube and the lower side of the fixed plate. A left impact hammer is slidably installed on the outer side of the left guide rod along the vertical direction. A left rack that can intermittently mesh with the first incomplete gear is fixed on the front side of the left impact hammer. A third compression spring is installed on the upper part of the left impact hammer and fitted on the outer side of the left guide rod. A right impact hammer is slidably installed on the outer side of the right guide rod along the vertical direction. A right rack that can intermittently mesh with the second incomplete gear is fixed on the front side of the right impact hammer. A fourth compression spring is installed on the upper part of the right impact hammer and fitted on the outer side of the right guide rod. When the first incomplete gear meshes with the left rack, the second incomplete gear does not mesh with the right rack. The left hammer moves upward to compress the third compression spring and then strikes the upper left side of the support plate after the first incomplete gear separates from the left rack. When the second incomplete gear meshes with the right rack, the first incomplete gear does not mesh with the left rack. The right hammer moves upward to compress the fourth compression spring and then strikes the upper right side of the support plate after the second incomplete gear separates from the right rack.

7. The shaft-torsion coupling impact drilling speed-up tool according to claim 5 or 6, characterized in that... The lower inner side of the left hammer has a stepped surface, and the lower part of the third compression spring is installed on the stepped surface. The right hammer has the same structure as the left hammer.

8. The shaft-torsion coupling impact drilling speed-up tool according to claim 5 or 6, characterized in that... Several support rods are distributed at intervals along the circumference of the inner side of the outer cylinder. The upper end of the support rod is in contact with the lower side of the upper cover, and the lower end of the support rod is in contact with the upper side of the lower cover. A limiting groove is provided on the outer side of the fixing plate corresponding to the position of each support rod. Several connecting rods are fixedly installed at intervals between the lower side of the support plate and the upper side of the lower cover.

9. The shaft-torsion coupling impact drilling speed-up tool according to claim 7, characterized in that... Several support rods are distributed at intervals along the circumference of the inner side of the outer cylinder. The upper end of the support rod is in contact with the lower side of the upper cover, and the lower end of the support rod is in contact with the upper side of the lower cover. A limiting groove is provided on the outer side of the fixing plate corresponding to the position of each support rod. Several connecting rods are fixedly installed at intervals between the lower side of the support plate and the upper side of the lower cover.

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