Multi-dimensional composite impact drilling tool

Abstract

This invention relates to the field of downhole operation technology and is a multi-dimensional composite impact drilling tool. It includes a drill bit shaft, piston liner, hammer, torsion hammer, coordinating components, and an outer cylinder. The drill bit shaft has a central channel running vertically through its middle section. Two upper water outlet holes are spaced apart at the front and rear of the upper part of the drill bit shaft, and two lower water outlet holes are spaced apart at the left and right of the lower part. A piston liner, with its lower end positioned above the lower water outlet holes, is located on the outer side of the drill bit shaft corresponding to the positions of the upper water outlet holes. This invention has a reasonable and compact structure and is easy to use. Periodic alignment of the upper water outlet holes with the upper impact holes allows high-pressure drilling fluid to enter and achieve axial downward impact from the hammer; periodic alignment of the lower water outlet holes with the lower impact holes achieves axial upward impact from the hammer; and the hammer and torsion hammer respectively achieve axial and circumferential impact, completing multi-dimensional impact and assisting the drill bit in rock breaking. It features stability, reliability, and good impact effect.

Description

[0001] Technical Field

[0002] This invention relates to the field of downhole operation technology and is a multi-dimensional composite impact drilling tool. Background Technology

[0003] As drilling depth increases, the rock encountered in the formation becomes harder, more abrasive, and has a higher drillability rating, leading to severe stick-slip vibration of the drill bit and a significant decrease in mechanical drilling rate, severely impacting the speed and cost of oil and gas exploration and development. To improve the mechanical drilling rate in deep, hard formations, domestic and international scholars have conducted extensive research on percussion drilling technology and developed various percussion drilling tools. Field applications have shown that percussion drilling tools are highly reliable and effectively increase drilling speed. Using torsional or rotary percussion drilling tools can significantly improve the drilling rate in difficult formations; therefore, research on percussion drilling tools has become a hot topic in recent years, resulting in the development of various hydraulically or mechanically driven rotary, torsional, or combined percussion drilling tools. Previous studies have extensively investigated the rock-breaking efficiency of PDC drill bits under rotary and torsional percussion conditions, but research on the rock-breaking efficiency of PDC drill bits in different rocks under combined percussion conditions is still limited.

[0004] Increasing drill bit cutting force and reducing or eliminating stick-slip vibration are effective means to improve drilling efficiency. Research has found that existing axial impact and torsional impact tools are not ideal for increasing drilling speed. In hard formations, torsional impact cutting makes rocks more prone to brittle fracture, improving drill bit penetration. However, in softer formations, it produces smaller rock cuttings, easily causing drill bit mud buildup. Axial impact can increase the cutting depth of PDC drill bits, but the increased impedance torque causes torsional vibration, easily leading to drill bit chipping. Addressing the limitations of traditional percussion drilling technology in terms of drill bit compatibility and formation adaptability, a composite percussion drilling tool has been proposed. This tool provides a three-dimensional rock-breaking effect, increasing mechanical drilling speed while reducing drill bit torque fluctuations and extending drill bit life.

[0005] Chinese patent document CN111021947B discloses a rotary impact tool, characterized by comprising an outer cylinder, an upper mandrel, a lower mandrel, a mandrel anvil, an impact generator, an impact drive assembly, an impact execution assembly, an upper floating sealing assembly, a lower floating sealing assembly, and a magnetic adsorption device. An upper mandrel capable of rotation is suspended on the upper inner side of the outer cylinder, and a lower mandrel capable of rotation is mounted on the lower inner side of the outer cylinder. An upper anvil is seated in the upper inner side of the lower mandrel, and the lower part of the upper mandrel is fitted into the mounting anvil. The lower part of the upper mandrel is connected to the upper part of the lower mandrel, and the upper mandrel can move up and down relative to the lower mandrel. A magnetic adsorption device is fixed to the lower part of the upper mandrel. The device comprises an impact generator that strikes the mandrel anvil; an impact drive assembly that is fitted inside the outer cylinder and rotates synchronously with the lower mandrel is mounted on the outer side of the lower mandrel; an impact execution assembly that sits on the impact drive assembly is mounted inside the outer cylinder, and the impact execution assembly can periodically reciprocate up and down with the rotation of the impact drive assembly; an upper floating seal assembly fitted on the upper outer side of the upper mandrel is provided between the upper mandrel and the outer cylinder; a lower floating seal assembly with a limit position installed on the lower inner side of the outer sleeve is fitted between the lower mandrel and the outer cylinder; a magnetic adsorption device is provided between the upper mandrel and the outer cylinder at the position corresponding to the upper floating seal assembly and the impact execution assembly; a first ring platform and a second ring platform are distributed vertically at intervals on the upper inner side of the outer cylinder; the upper end of the upper mandrel is located above the first ring platform; the upper mandrel... The lower end is located below the second ring platform. An upper ring limiting component is provided on the outer side of the upper mandrel corresponding to the position between the first and second ring platforms. Thrust bearings are fitted between the upper mandrel and the outer cylinder at positions corresponding to the first ring platform and the ring limiting component, and between the ring limiting component and the second ring platform. Upper wear-resistant sleeves are fitted between the first ring platform and the upper mandrel, and between the second ring platform and the upper mandrel. The outer cylinder includes an upper connector, a bearing housing sleeve, an impact sleeve, an intermediate sleeve, and a lower sleeve. The inner side of the upper end of the bearing housing sleeve is integrally formed with the outer side of the lower end of the first ring platform. The outer side of the upper part of the first ring platform is fixedly installed with the inner side of the lower part of the upper connector, and the upper connector sits on the bearing housing sleeve. The inner side of the upper end of the impact sleeve is integrally formed with the outer side of the lower end of the second ring platform. The outer side of the upper end of the second ring platform... The lower end of the bearing sleeve is fixedly installed together with the inner side of the lower end of the bearing body sleeve, and the bearing body sleeve is seated on the impact sleeve. The upper end of the lower mandrel is located above the intermediate sleeve. The impact actuator is located below the second ring platform. The impact drive assembly is located above the intermediate sleeve. The lower end of the impact sleeve is provided with an outer ring groove. An outer wear-resistant sleeve is fixedly installed in the outer ring groove. The lower end of the impact sleeve is fixedly installed together with the upper end of the intermediate sleeve. The lower end of the intermediate sleeve is fixedly installed together with the upper end of the lower sleeve. A middle cylinder sealing sleeve located in the lower sleeve is fixedly installed on the lower end of the intermediate sleeve. The middle cylinder sealing sleeve is fitted into the lower mandrel and an O-ring seal is installed between the two. The upper inner side of the intermediate sleeve is provided with a middle wear-resistant ring groove. A middle wear-resistant sleeve fitted into the outer side of the lower mandrel is provided in the middle wear-resistant ring groove.The floating sealing assembly includes an upper valve body, a dust seal, an upper one-way seal, a first bushing, and an upper sealing ring. The upper one-way seal prevents liquid from permeating from top to bottom. An upper valve body is fitted between the upper mandrel and the upper connector, corresponding to the position above the first annular platform. Between the upper valve body and the upper mandrel, a dust seal, an upper one-way seal, and a first bushing are sequentially spaced from top to bottom. A first inner annular groove is provided inside the upper valve body, corresponding to the position between the dust seal and the upper one-way seal. At least one first connecting hole, capable of communicating with the first inner annular groove, is evenly distributed along the circumference on the outer side of the upper valve body corresponding to the position of the first inner annular groove. At least one downward-opening blind connecting hole is evenly distributed along the circumference at the lower end of the upper valve body, corresponding to the position below the first inner annular groove. The upper end of the blind connecting hole... Located above the first bushing, at least one upper sealing ring is provided between the upper valve body and the upper connector at intervals below the first inner ring groove. A second connecting hole is provided on the outer side of the upper valve body between every two adjacent upper sealing rings, connecting to the corresponding blind hole. At least one third connecting hole is provided on the inner side of the upper valve body between the upper one-way sealing ring and the first bushing, connecting to the corresponding blind hole. An upper mounting channel is provided between the upper part of the bearing sleeve and the first annular platform. One end of the upper mounting channel is located on the upper outer side of the bearing sleeve and is fitted with an upper mounting plug. The other end of the upper mounting channel is located at the upper end of the first annular platform. The lower floating sealing assembly includes a lower valve body, a third bushing, and... A second bushing, a lower one-way sealing ring, and a lower sealing ring are provided. A lower valve body is fitted between the lower mandrel and the lower sleeve at the middle position of the lower sleeve. A first valve body annular platform is provided on the upper inner side of the lower valve body. A second bushing is provided between the inner side of the first valve body annular platform and the lower mandrel. A second valve body annular platform is provided on the lower inner side of the lower valve body. A lower one-way sealing ring that prevents liquid from permeating from bottom to top is provided between the upper inner side of the second valve body annular platform and the lower mandrel. A lower sealing ring is provided between the upper outer side of the lower valve body and the lower sleeve. A second inner annular groove is provided on the inner side of the lower valve body corresponding to the position between the second bushing and the lower one-way sealing ring. At least one vertically penetrating connecting groove is distributed along the circumference on the inner side of the first valve body annular platform. At least one opening groove is distributed along the circumference on the lower outer side of the lower valve body. The downward-facing sliding groove has a limit mounting hole that runs through the inside and outside of the lower sleeve at the upper end of each sliding groove. A limit plug with its inner end located in the corresponding sliding groove is fixedly installed in each limit mounting hole. A lower mounting through hole is provided on the lower sleeve at the position between the middle sleeve and the lower valve body. A lower mounting plug is installed in the lower mounting through hole. A lower ring platform is provided on the inner side of the lower end of the lower sleeve. An inner ring groove is provided on the inner side of the middle part of the lower ring platform. A third bushing is installed in the inner ring groove. A fourth connecting hole that runs through the inside and outside of the inner ring groove is provided on the lower ring platform at the position corresponding to the outer side of the inner ring groove. The magnetic adsorption device is a cylindrical magnet. At least two mounting blind holes are evenly distributed along the circumference at the upper end of the first ring platform. A cylindrical magnet is fixedly installed in each mounting blind hole. The rotary impact tool has the following technical defects: (1) It can only provide single-dimensional impact; (2) It can provide small impact force and needs to be matched with a highly aggressive drill bit to achieve speed and efficiency, but it cannot achieve the purpose of cost reduction.(3) The speed-up effect is severely limited when encountering difficult-to-drill formations with alternating soft and hard surfaces.

[0006] Chinese patent document CN 111305748 B discloses a circumferential impact drilling speed-up tool, characterized by comprising a body, a mandrel, a circumferential impact assembly, a flow divider cap, and a lower connector. The body contains a mandrel with a main flow channel running vertically through its center. A flow divider cap is fixedly mounted on the upper end of the mandrel. At least one elongated guide hole running through both the inner and outer sides of the mandrel's center is provided. A limiting ring is provided on the lower outer side of the mandrel. The circumferential impact assembly includes an impact drive, an impact generator, and an impact actuator. A flow divider cap is fitted on the outer side of the mandrel corresponding to the position between the flow divider cap and the limiting ring. An impact drive component that periodically reciprocates on a shaft has an impact actuator located below a spindle on its outer side. An impact generator, mounted on the outer side of the upper inner side of the impact actuator, strikes the impact actuator as it rotates with the impact drive component. The lower inner side of the impact actuator is fixedly mounted to the lower outer side of the spindle, and a lower connector is fixedly mounted to the lower outer side of the impact actuator. The lower inner side of the actuator body is mounted to the upper outer side of the lower connector. A wear-resistant component is provided between the lower end of the impact drive component and the limiting ring platform. The impact drive component includes... The system includes a distribution plate, with the distribution plate fitted onto the outer side of the mandrel's center; an impact generator including an impact hammer fitted onto the outer side of the distribution plate; an impact actuator including an anvil, with the lower part of the anvil fitted onto the outer side of the impact hammer, the inner side of the lower part of the anvil fixedly mounted to the outer side of the lower end of the mandrel, and a lower connector fixedly mounted on the outer side of the lower end of the anvil; it also includes a fixing cap, an inner mounting neck, a middle mounting neck, and an upper mounting block. The inner mounting neck is fixedly mounted on the upper end of the distribution plate, the middle mounting neck is fixedly mounted on the upper end of the impact hammer, and two fixing blocks are evenly distributed around the circumference of the upper end of the anvil; corresponding to the distribution cap... A fixed pressure cap is provided on the outer side of the upper part of the mandrel at the square position. A fixed inner ring groove is provided on the inner side of the lower end of the fixed pressure cap corresponding to the inner and middle mounting neck positions. The inner and middle mounting necks are both located in the fixed inner ring groove. A fixed limiting groove is provided on the lower side of the fixed pressure cap corresponding to each fixed block position. Each fixed block is located in the fixed limiting groove at the corresponding position. It also includes a wear-resistant neck, a wear-resistant ring, and wear-resistant blocks. A wear-resistant neck is fixedly installed at the lower end of the distribution plate. A wear-resistant ring is fixedly installed at the upper end of the limiting ring platform. At least four wear-resistant blocks are evenly distributed around the circumference at the lower end of the wear-resistant neck and the upper end of the wear-resistant ring. This circumferential impact drilling speed-up tool has the following technical defects: (1) It can only provide single-dimensional impact; (2) It is designed with a structure of multiple reversing ports, which makes the overall structure complex and easily subject to erosion damage; (3) It will cause torsional vibration of the drill bit, which will lead to the danger of drill bit tooth breakage. Summary of the Invention

[0007] This invention provides a multi-dimensional composite impact drilling tool that overcomes the shortcomings of the prior art and can effectively solve the problems of the single impact mode and complex structure of existing impact acceleration devices.

[0008] The technical solution of this invention is achieved through the following measures: A multi-dimensional composite impact drilling tool includes a drill bit shaft, a piston liner, a counterweight, a torsion hammer, a coordinating component, and an outer cylinder. The drill bit shaft has a central channel running vertically through its middle section. The upper part of the drill bit shaft has two upper water outlet holes spaced apart front to back, and the lower part of the drill bit shaft has two lower water outlet holes spaced apart left to right. A piston liner with its lower end above the lower water outlet hole is located on the outer side of the drill bit shaft corresponding to the position of the upper water outlet hole. An upper impact hole is located on the outer side of the upper part of the piston liner corresponding to the position of the upper water outlet hole, and a lower impact hole is located on the outer side of the lower part of the piston liner corresponding to the position of the upper impact hole. A counterweight is located on the outer side of the middle section of the piston liner. An upper high-pressure impact ring groove is located on the inner side of the upper end of the counterweight, and a lower high-pressure impact ring groove is located on the inner side of the lower end of the counterweight. A torsion hammer is located on the outer side of the counterweight. A coordinating component is provided between the counterweight and the torsion hammer to enable the torsion hammer to rotate synchronously axially when the counterweight moves up and down axially. An outer cylinder with its upper end above the drill bit shaft is located on the outer side of the torsion hammer. The lower part of the outer cylinder is fixedly installed together with the lower part of the drill bit shaft.

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

[0010] The aforementioned collaborative components may include multiple sets of cages spaced vertically apart. The outer side of the middle of the hammer has two outer grooves spaced at intervals, and the inner side of the middle of the torsion hammer has two inner grooves spaced at intervals, which are consistent with the outer grooves. Both the outer and inner grooves are spiral grooves. The cage includes a large ring, a small ring, and balls. At least two large rings are spaced vertically between the hammer and the torsion hammer. Small rings are provided on both the front and rear sides of the large rings. Balls are provided inside the small rings. The inner end of the ball is located in the outer groove at the corresponding position, and the outer end of the ball is located in the inner groove at the corresponding position.

[0011] The above may also include a throttling nozzle, an external return hole on the outer side of the piston liner below the lower impact hole, a return ring groove on the outer side of the drill rod shaft below the lower water outlet hole, an internal return hole inclined in the return ring groove with the outer side higher than the inner side, and a throttling nozzle on the inner side of the drill rod shaft between the lower water outlet hole and the internal return hole.

[0012] The above may also include elastic washers, impact-bearing blocks, suspension rings, and bearings. A limiting ring platform is provided on the inner side of the upper end of the outer cylinder. The lower outer side of the drill bit shaft, corresponding to the position below the piston liner, is fixedly installed together with the outer cylinder by the suspension ring. An elastic washer is provided between the outer cylinder and the piston liner at the position between the counterweight and the limiting ring platform. An impact-bearing block is provided between the outer cylinder and the drill bit shaft at the position between the counterweight and the suspension ring. A bearing is provided between the lower end of the outer cylinder and the drill bit shaft.

[0013] The upper outer side of the drill bit shaft may be provided with a keyway, and the outer side of the drill bit shaft corresponding to the position of the upper water outlet hole is provided with an upper fan-shaped ring platform, and the outer side of the drill bit shaft corresponding to the position of the lower water outlet hole is provided with a lower fan-shaped ring platform.

[0014] The piston liner may be provided with at least one guide vertical platform at circumferential intervals on the outer side, and a guide vertical groove is provided on the inner side of the counterweight corresponding to the position of the guide vertical platform, with the guide vertical platform located in the guide vertical groove at the corresponding position.

[0015] The aforementioned torsion hammer may include a torsion cylinder and a hammer body. Two hammer bodies are evenly distributed around the outer side of the torsion cylinder at circumferential intervals. An arc-shaped impact groove is provided on the inner side of the outer cylinder corresponding to the position of the hammer body, which allows the hammer body to swing within it.

[0016] This invention has a reasonable and compact structure and is easy to use. By periodically aligning the upper water outlet and the upper impact hole, high-pressure drilling fluid is introduced to achieve axial downward impact of the hammer; by periodically aligning the lower water outlet and the lower impact hole, the hammer achieves axial upward impact; the hammer and the torsional hammer respectively achieve axial and circumferential impact, completing multi-dimensional impact and assisting the drill bit in rock breaking. It has the characteristics of stability, reliability and good impact effect. Attached Figure Description

[0017] Appendix Figure 1 These are schematic diagrams of the main cross-sectional structure of embodiments 1 to 7 of the present invention.

[0018] Appendix Figure 2 For the appendix Figure 1 A three-dimensional structural diagram of the piston liner.

[0019] Appendix Figure 3 For the appendix Figure 1 A three-dimensional structural diagram of the central counterweight.

[0020] Appendix Figure 4 For the appendix Figure 1 A three-dimensional structural diagram of the cage.

[0021] Appendix Figure 5 For the appendix Figure 1 A three-dimensional structural diagram of a torsion hammer.

[0022] Appendix Figure 6 For the appendix Figure 1 A three-dimensional structural diagram of the drill bit shaft.

[0023] The codes in the attached diagram are as follows: 1 is drill bit shaft, 2 is piston liner, 3 is counterweight, 4 is torsion punch, 5 is hammer body, 6 is outer cylinder, 7 is central channel, 8 is upper water outlet, 9 is lower water outlet, 10 is upper impact hole, 11 is lower impact hole, 12 is upper high-pressure impact ring groove, 13 is lower high-pressure impact ring groove, 14 is large ring body, 15 is small ring body, 16 is ball bearing, 17 is inner groove, 18 is outer groove, 19 is throttling nozzle, 20 is elastic washer, 21 is impact bearing block, 22 is suspension ring, 23 is bearing, 24 is limiting ring platform, 25 is keyway, 26 is upper fan-shaped changing platform, 27 is guide vertical platform, 28 is guide vertical groove, 29 is outer return hole, and 30 is inner return hole. Detailed Implementation

[0024] 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.

[0025] 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 front, back, top, bottom, left, right, etc. The positional relationships are determined based on the layout direction of the attached diagram in the instruction manual.

[0026] The present invention will be further described below with reference to embodiments and accompanying drawings:

[0027] Example 1: As shown in the attached document Figure 1 , 2As shown in Figures 3, 4, 5, and 6, this multi-dimensional composite impact drilling tool includes a drill bit shaft 1, a piston liner 2, a counterweight 3, a torsion hammer, a coordinating assembly, and an outer cylinder 6. The drill bit shaft 1 has a central channel 7 running vertically through its middle section. The upper part of the drill bit shaft 1 has two upper water outlet holes 8 spaced apart front to back, and the lower part of the drill bit shaft 1 has two lower water outlet holes 9 spaced apart left to right. A piston liner 2, with its lower end positioned above the lower water outlet holes 9, is located on the outer side of the drill bit shaft 1 corresponding to the position of the upper water outlet holes 8. An upper impact hole 10 is located on the outer side of the upper part of the piston liner 2 corresponding to the position of the upper water outlet holes 8. A lower impact hole 11 is provided on the outer side of the lower part of the piston liner 2 corresponding to the position of the upper impact hole 10; a counterweight 3 is provided on the outer side of the middle part of the piston liner 2, an upper high-pressure impact ring groove 12 is provided on the inner side of the upper end of the counterweight 3, a lower high-pressure impact ring groove 13 is provided on the inner side of the lower end of the counterweight 3, a torsion hammer is provided on the outer side of the counterweight 3, a coordinating component is provided between the counterweight 3 and the torsion hammer to enable the torsion hammer to rotate synchronously in the axial direction when the counterweight 3 moves up and down in the axial direction, and an outer cylinder 6 is provided on the outer side of the torsion hammer with its upper end located above the drill bit shaft 1, and the lower part of the outer cylinder 6 is limited and installed together with the lower part of the drill bit shaft 1. During operation, the upper water outlet 8 and the upper impact hole 10 are periodically aligned to allow high-pressure drilling fluid to enter the upper high-pressure impact ring groove 12, achieving axial downward impact of the hammer 3. The lower water outlet 9 and the lower impact hole 11 are periodically aligned to allow high-pressure drilling fluid to enter the lower high-pressure impact ring groove 13, achieving axial upward impact of the hammer 3. The hammer 3 and the torsional hammer achieve axial and circumferential impacts respectively, completing multi-dimensional impacts and assisting the drill bit in rock breaking. By setting up a coordinating component, the torsional hammer can complete circumferential impacts while the hammer 3 is impacting axially. By setting up the upper high-pressure impact ring groove 12, the high-pressure drilling fluid forms a high-pressure chamber after entering the upper high-pressure impact ring groove 12, thereby pushing the hammer 3 downward. By setting up the lower high-pressure impact ring groove 13, the high-pressure drilling fluid forms a high-pressure chamber after entering the lower high-pressure impact ring groove 13, thereby pushing the hammer 3 upward.

[0028] The aforementioned multi-dimensional composite impact drilling tools can be further optimized and / or improved according to actual needs:

[0029] Example 2: As shown in the attached document Figure 1 , 2As shown in Figures 3, 4, 5, and 6, the coordinating component includes multiple sets of retainers spaced vertically. The outer side of the middle of the hammer 3 has two outer grooves 18 spaced forward and backward, and the inner side of the middle of the torsion hammer has two inner grooves 17 spaced forward and backward, consistent with the outer grooves 18. Both the outer grooves 18 and the inner grooves 17 are helical grooves. The retainers include large annular bodies 14, small annular bodies 15, and ball bearings 16. At least two large annular bodies 14 are spaced vertically between the hammer 3 and the torsion hammer. Small annular bodies 15 are located on both the front and rear sides of the large annular bodies 14. Ball bearings 16 are located within the small annular bodies 15, with the inner ends of the ball bearings 16 located in the corresponding outer grooves 18 and the outer ends of the ball bearings 16 located in the corresponding inner grooves 17. During use, this arrangement not only enables the torsion hammer to rotate axially synchronously when the hammer 3 moves axially up and down, but also reduces the frictional force during the rotation of the torsion hammer, effectively improving the impact effect of the invention. This invention uses a rolling element (ball bearing 16) and a slide rail (outer groove 18 and inner groove 17) to combine the hammer 3 and the torsional hammer. This not only reduces the number of reversing ports used in existing impact devices, but also provides both axial and torsional impact forces to the drill bit shaft 1, thereby achieving the goal of increasing speed and efficiency. This invention greatly simplifies the structure of existing impact drilling tools, making them easy to process and assemble, low in cost, and long in life. Furthermore, the impact force can be adjusted by changing the length of the hammer 3.

[0030] Example 3: As shown in the attached document Figure 1 , 2 As shown in Figures 3, 4, 5, and 6, the device also includes a throttling nozzle 19. An external return hole 29 is provided on the outer side of the lower part of the piston liner 2, corresponding to the position below the lower impact hole 11. A return annular groove is provided on the outer side of the drill rod shaft, corresponding to the position below the lower water outlet hole 9. An inner return hole 30, inclined in a high-low shape, is provided within the return annular groove. A throttling nozzle 19 is provided on the inner side of the drill bit shaft 1, corresponding to the position between the lower water outlet hole 9 and the inner return hole 30. During use, this configuration effectively enhances the impact effect of the invention.

[0031] Example 4: As shown in the appendix Figure 1 , 2 As shown in Figures 3, 4, 5, and 6, the system also includes an elastic washer 20, an impact-bearing block 21, a suspension ring 22, and a bearing 23. A limiting ring platform 24 is provided on the inner side of the upper end of the outer cylinder 6. The lower outer side of the drill bit shaft 1, corresponding to the position below the piston liner 2, is fixedly installed to the outer cylinder 6 via the suspension ring 22. An elastic washer 20 is provided between the outer cylinder 6 and the piston liner 2 at the position corresponding to the position between the counterweight 3 and the limiting ring platform 24. An impact-bearing block 21 is provided between the outer cylinder 6 and the drill bit shaft 1 at the position corresponding to the position between the counterweight 3 and the suspension ring 22. A bearing 23 is provided between the lower end of the outer cylinder 6 and the drill bit shaft 1. During use, this design not only prevents the outer cylinder 6 from rotating with the drill bit shaft 1, reducing friction during rotation, but also provides support for the drill bit shaft 1, preventing radial sway during rotation.

[0032] Example 5: As shown in the attached document Figure 1 , 2 As shown in Figures 3, 4, 5, and 6, a keyway 25 is provided on the outer side of the upper end of the drill bit shaft 1. An upper fan-shaped annular platform is provided on the outer side of the drill bit shaft 1 corresponding to the position of the upper water outlet hole 8, and a lower fan-shaped annular platform is provided on the outer side of the drill bit shaft 1 corresponding to the position of the lower water outlet hole 9. During use, this arrangement ensures the sealing performance when the upper water outlet hole 8 is periodically aligned with the upper impact hole 10, and when the lower water outlet hole 9 is periodically aligned with the lower impact hole 11, preventing the loss of high-pressure drilling fluid and affecting the axial impact effect.

[0033] Example 6: As shown in the appendix Figure 1 , 2 As shown in Figures 3, 4, 5, and 6, at least one guide vertical platform 27 is provided at intervals along the circumference on the outer side of the piston liner 2. A guide vertical groove 28 is provided on the inner side of the counterweight 3 corresponding to the position of the guide vertical platform 27, and the guide vertical platform 27 is located in the guide vertical groove 28 at the corresponding position. During use, the axial movement of the counterweight 3 is guided by the guide vertical platform 27.

[0034] Example 7: As attached Figure 1 , 2 As shown in Figures 3, 4, 5, and 6, the torsion hammer includes a torsion cylinder 4 and hammer bodies 5. Two hammer bodies 5 are evenly distributed around the outer circumference of the torsion cylinder 4. The inner side of the outer cylinder 6 corresponding to the position of the hammer bodies 5 is provided with an arc-shaped impact groove that allows the hammer bodies 5 to swing within it. During use, the hammer bodies 5 swing within the outer cylinder 6 to strike the arc-shaped impact groove, providing circumferential impact force.

[0035] The above technical features constitute the 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.

Claims

1. A multi-dimensional composite impact drilling tool, characterized in that... The system includes a drill bit shaft, piston liner, counterweight, torsion hammer, coordinating components, and an outer cylinder. The drill bit shaft has a central channel running vertically through its middle section. Two upper water outlet holes are spaced apart at the front and rear of the upper part of the drill bit shaft, and two lower water outlet holes are spaced apart at the left and right sides of the lower part. A piston liner, with its lower end above the lower water outlet holes, is located on the outer side of the drill bit shaft corresponding to the positions of the upper water outlet holes. An upper impact hole is located on the outer side of the upper part of the piston liner corresponding to the position of the upper impact hole, and a lower impact hole is located on the outer side of the lower part of the piston liner corresponding to the position of the upper impact hole. A counterweight is located on the outer side of the middle section of the piston liner. An upper high-pressure impact ring groove is located on the inner side of the upper end of the counterweight, and a lower high-pressure impact ring groove is located on the inner side of the lower end of the counterweight. A torsion hammer is located on the outer side of the counterweight. A space is provided between the counterweight and the torsion hammer to allow the torsion hammer to move upwards along the counterweight axis. The coordinating component that rotates synchronously axially during downward movement includes an outer cylinder on the outside of the torsion hammer, with its upper end positioned above the drill bit shaft. The lower part of the outer cylinder is fixedly installed with the lower part of the drill bit shaft. The coordinating component includes multiple sets of retainers spaced vertically. The outer side of the middle of the hammer has two outer grooves spaced front to back, and the inner side of the middle of the torsion hammer has two inner grooves spaced front to back, consistent with the outer grooves. Both the outer and inner grooves are helical grooves. The retainer includes a large ring, a small ring, and balls. At least two large rings are spaced vertically between the hammer and the torsion hammer. Small rings are provided on both the front and rear sides of the large rings. Balls are located inside the small rings, with the inner end of the ball located in the corresponding outer groove and the outer end of the ball located in the corresponding inner groove.

2. The multi-dimensional composite impact drilling tool according to claim 1, characterized in that... It also includes a throttling nozzle, an external return hole on the outer side of the piston liner below the lower impact hole, a return ring groove on the outer side of the drill rod shaft below the lower water outlet hole, an internal return hole inclined in the return ring groove with the outer side higher than the inner side, and a throttling nozzle on the inner side of the drill rod shaft between the lower water outlet hole and the internal return hole.

3. The multi-dimensional composite impact drilling tool according to claim 1 or 2, characterized in that... It also includes elastic washers, impact-bearing blocks, suspension rings, and bearings. A limiting ring platform is provided on the inner side of the upper end of the outer cylinder. The lower outer side of the drill bit shaft, corresponding to the position below the piston liner, is fixedly installed with the outer cylinder by the suspension ring. An elastic washer is provided between the outer cylinder and the piston liner at the position between the counterweight and the limiting ring platform. An impact-bearing block is provided between the outer cylinder and the drill bit shaft at the position between the counterweight and the suspension ring. A bearing is provided between the lower end of the outer cylinder and the drill bit shaft.

4. The multi-dimensional composite impact drilling tool according to claim 1 or 2, characterized in that... A keyway is provided on the outer side of the upper end of the drill bit shaft. An upper fan-shaped ring platform is provided on the outer side of the drill bit shaft corresponding to the position of the upper water outlet hole, and a lower fan-shaped ring platform is provided on the outer side of the drill bit shaft corresponding to the position of the lower water outlet hole.

5. The multi-dimensional composite impact drilling tool according to claim 3, characterized in that... A keyway is provided on the outer side of the upper end of the drill bit shaft. An upper fan-shaped ring platform is provided on the outer side of the drill bit shaft corresponding to the position of the upper water outlet hole, and a lower fan-shaped ring platform is provided on the outer side of the drill bit shaft corresponding to the position of the lower water outlet hole.

6. The multi-dimensional composite impact drilling tool according to claim 1, 2, or 5, characterized in that... At least one guide vertical platform is provided at circumferential intervals on the outer side of the piston liner, and a guide vertical groove is provided on the inner side of the counterweight corresponding to the position of the guide vertical platform, with the guide vertical platform located in the guide vertical groove at the corresponding position.

7. The multi-dimensional composite impact drilling tool according to claim 3, characterized in that... At least one guide vertical platform is provided at circumferential intervals on the outer side of the piston liner, and a guide vertical groove is provided on the inner side of the counterweight corresponding to the position of the guide vertical platform, with the guide vertical platform located in the guide vertical groove at the corresponding position.

8. The multi-dimensional composite impact drilling tool according to claim 4, characterized in that... At least one guide vertical platform is provided at circumferential intervals on the outer side of the piston liner, and a guide vertical groove is provided on the inner side of the counterweight corresponding to the position of the guide vertical platform, with the guide vertical platform located in the guide vertical groove at the corresponding position.

9. The multi-dimensional composite impact drilling tool according to claim 1, 2, 5, 7, or 8, characterized in that... The torsion hammer includes a torsion cylinder and a hammer body. Two hammer bodies are evenly distributed around the outer side of the torsion cylinder. The inner side of the outer cylinder corresponding to the position of the hammer body is provided with an arc-shaped impact groove that allows the hammer body to swing inside.

10. The multi-dimensional composite impact drilling tool according to claim 3, characterized in that... The torsion hammer includes a torsion cylinder and a hammer body. Two hammer bodies are evenly distributed around the outer side of the torsion cylinder. The inner side of the outer cylinder corresponding to the position of the hammer body is provided with an arc-shaped impact groove that allows the hammer body to swing inside.

11. The multi-dimensional composite impact drilling tool according to claim 4, characterized in that... The torsion hammer includes a torsion cylinder and a hammer body. Two hammer bodies are evenly distributed around the outer side of the torsion cylinder. The inner side of the outer cylinder corresponding to the position of the hammer body is provided with an arc-shaped impact groove that allows the hammer body to swing inside.

12. The multi-dimensional composite impact drilling tool according to claim 6, characterized in that... The torsion hammer includes a torsion cylinder and a hammer body. Two hammer bodies are evenly distributed around the outer side of the torsion cylinder. The inner side of the outer cylinder corresponding to the position of the hammer body is provided with an arc-shaped impact groove that allows the hammer body to swing inside.

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