Fluid boosting device and fluid pulse rotary steerable drilling tool

Abstract

The present invention discloses a fluid boosting device, which includes a first power device connected to a drill pipe and a drill collar, a second power device rotatably arranged synchronously with a drill bit, and a regulating device connected between the first power device and the second power device; the first power device is a turbine; the second power device includes: a high-pressure pump, a high-pressure chamber located at the lower end of the high-pressure pump, and a solenoid valve located at the bottom end of the high-pressure chamber. The high-pressure chamber communicates with a high-pressure hole and a high-pressure nozzle of the drill bit through a valve port of the solenoid valve; the present invention also provides a fluid pulse rotary steering drill tool. The valve port of the solenoid valve and the high-pressure hole are arranged corresponding to each other and fixed, and rotate synchronously, ensuring the stability of the seal, ensuring the pressure of the injected drilling fluid, and at the same time improving the reliability of directional rock breaking. The designed double-layer high-pressure chamber, combined with the up and down movement of the piston, ensures the injection pressure to a great extent. The overall structure of the present invention is simple and compact, with higher reliability and longer service life.

Description

Technical Field

[0001] The present invention relates to a rotary steerable drilling device in the field of oil drilling engineering, in particular to a fluid boosting device for boosting drilling fluid used in hydraulic rock breaking steerable drilling. The present invention also provides a fluid pulse rotary steerable drill tool with a fluid boosting device. Background Art

[0002] The rotary steerable drilling system is an important drilling tool for complex structure wells such as horizontal wells, directional wells, and extended reach wells. The rotary steerable drilling system reduces the drag phenomenon by rotating the outer casing or most of the outer casing and a very short part not rotating, and realizes the construction of deeper and longer horizontal wells and directional wells. In recent years, the rotary steerable drilling system has gradually become a popular steerable drilling technology and one of the key technologies for efficient drilling. The guiding principle of the rotary steerable drilling system is to achieve uneven rock breaking in controllable different directions, so that the rock breaking amount in a specific direction is greater than that in other directions.

[0003] At present, the rock breaking methods of the rotary steerable drilling system are mechanical rock breaking methods or hydraulic rock breaking methods. The mechanical rock breaking method mainly relies on the side cutting ability of the drill bit and the guiding lateral force. However, the offset mechanism that generates the lateral force is easily damaged by adverse factors such as vibration, impact, and rotation, thereby affecting the guiding effect and service life of the entire rotary steerable drilling system. And the existing hydraulic guiding rock breaking method often has problems of poor sealing performance, seriously affecting the service life and reliability.

[0004] Based on this, how to solve the problem of the reduction of the reliability and service life of the offset mechanism of the rotary steerable drilling system caused by the mechanical rock breaking method, and how to avoid the rotary dynamic sealing problem under high-pressure hydraulic rock breaking conditions for the guiding drilling device are the technical problems that those skilled in the art need to solve at present. Summary of the Invention

[0005] The purpose of the present invention is to provide a fluid boosting device for dynamically boosting drilling fluid during the drilling process, which not only solves the problem of poor sealing of traditional high-pressure hydraulic rock breaking, but also improves the reliability of directional rock breaking. The present invention also provides a fluid pulse rotary steerable drill tool with the fluid boosting device. Through the cooperation of the fluid boosting device and the steerable drill tool, directional rock breaking is realized, and the directional drilling speed is greatly improved.

[0006] To achieve the above purpose, the present invention provides a fluid boosting device, which includes a first power device connected to a drill pipe and a drill collar, a second power device rotatably arranged synchronously with the drill bit, and a regulating device connected between the first power device and the second power device;

[0007] The first power device is a turbine;

[0008] The second power device includes: a high-pressure pump, a high-pressure chamber at the lower end of the high-pressure pump and a solenoid valve at the bottom end of the high-pressure chamber. The high-pressure chamber is connected to the high-pressure hole and high-pressure nozzle of the drill bit through the valve port of the solenoid valve.

[0009] Furthermore, a central wire rod connected to the solenoid valve passes through the high-pressure pump and the high-pressure chamber, and a wire connected to the solenoid valve passes through the central wire rod.

[0010] Furthermore, a shell is provided outside the high-pressure pump, a liquid inlet is provided on the shell, a pump end bearing is provided at the bottom end of the high-pressure pump relative to the inner side of the shell, and a lower stabilizer is provided at the bottom end of the high-pressure pump relative to the outer side of the shell.

[0011] Furthermore, the cavity radius of the high-pressure chamber is smaller than the radius of the high-pressure pump, and wire rod centralizers are provided at the upper and lower ends of the central wire rod in the high-pressure chamber.

[0012] Furthermore, the high-pressure chamber is a double-tube structure, the inner cavity of the inner tube accommodates pressurized drilling fluid and the center line rod, and the outer cavity of the outer tube is a low-pressure chamber, which accommodates non-pressurized drilling fluid. A buffer chamber is formed between the inner tube and the outer tube, and a piston with an elastic structure is provided in the buffer chamber.

[0013] Furthermore, the buffer chamber is connected to the low-pressure chamber through a breathing port provided on the upper outer chamber wall thereof, and the bottom side of the piston is connected to the high-pressure chamber, and the elastic structure is a spring.

[0014] Furthermore, the solenoid valve is fixed on the drill bit through a valve seat, and the valve port of the solenoid valve corresponds to the high-pressure hole of the drill bit.

[0015] Furthermore, there are at least two solenoid valves, and the valve ports of the at least two solenoid valves correspond one-to-one to the at least two high-pressure holes of the drill bit.

[0016] Furthermore, the control device includes a generator connected to the turbine in sequence, a circuit protection tube containing a measurement and control circuit board and an attitude sensor, and a downhole motor, and the downhole motor is connected to the high-pressure pump of the second power unit through a universal joint.

[0017] Furthermore, the patent of the present invention also provides a fluid pulse rotary guide drilling tool, which includes the fluid pressurizing device as mentioned above, and also includes an outer cylinder arranged on the outer periphery of the fluid pressurizing device, a drill collar connected to the upper end of the outer cylinder, and a drill bit connected to the lower end of the outer cylinder. A part of the drilling fluid in the inner cavity of the outer cylinder flows out through the low-pressure water hole of the drill bit, and the other part of the drilling fluid is pressurized by the fluid pressurizing device and then ejected through the high-pressure hole and high-pressure nozzle of the drill bit.

[0018] Furthermore, the turbine in the fluid boosting device is connected to the drill collar through the upper center tube.

[0019] Furthermore, the upper center tube is centrally arranged relative to the outer tube through an upper centralizer.

[0020] Furthermore, under the power of the drill collar, the outer cylinder, the first power device, the second power device, and the drill bit rotate synchronously.

[0021] By using the fluid boosting device of the present invention, since it is designed to rotate synchronously with the drill bit, the problem of poor sealing caused by relative rotation is avoided. The solenoid valve orifice and the high-pressure hole are corresponding and fixed to ensure the stability of the seal, guarantee the pressure of the jet drilling fluid, and at the same time improve the reliability of directional rock breaking. The designed double-layer high-pressure chamber, combined with the up and down movement of the piston, ensures to a great extent that the jet pressure will not be too high or too low, and further strengthens the reliability of directional rock breaking. The present invention also provides a fluid pulse rotary steerable drill tool with the fluid boosting device. Through the cooperation of the fluid boosting device and the steerable drill tool, directional rock breaking is achieved, and the directional drilling speed is greatly improved. The technical solution of the present invention does not require an additional mechanical offset mechanism, avoids high-pressure dynamic sealing, and the overall structure is simple and compact, with higher reliability and longer service life. Brief Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0023] Figure 1 It is a schematic structural diagram of the application of the fluid boosting device provided by the embodiment of the present invention on a fluid pulse rotary steerable drill tool;

[0024] Figure 2 It is... Figure 1 The enlarged view of the partial A in the figure.

[0025] Wherein: 1. Outer cylinder, 2. Upper central cylinder, 3. Upper centralizer, 4. Turbine, 5. Generator, 6. Measurement and control circuit board, 7. Circuit protection cylinder, 8. Attitude sensor, 9. Downhole motor, 10. Cardan shaft, 11. High-pressure pump, 12. Outer shell, 13. Pump end bearing, 14. Central wire rod, 1�. Conducting wire, 16. Wire rod centralizer, 17. High-pressure chamber, 18. Spring, 19. Breather port, 20. Piston, 21. Solenoid valve, 22. Valve seat, 23. High-pressure hole, 24. Drill bit, 25. High-pressure nozzle, 26. Low-pressure water eye, 27. Liquid inlet. Detailed Embodiments

[0026] The core of the present invention is to provide a fluid boosting device and the application of the fluid boosting device on a fluid pulse rotary steering drill tool, aiming to solve the sealing problem of the existing boosting device, ensure the jet pressure of the drilling fluid, improve the reliability of directional rock breaking in drilling, and ensure the drilling speed.

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] Embodiment 1

[0029] Please refer to Figures 1 to 2 , a fluid boosting device disclosed in this embodiment includes a first power device connected to the drill pipe and drill collar, a second power device synchronously rotating with the drill bit 24, and a control device connected between the first power device and the second power device; the first power device is a turbine 4; the second power device includes: a high-pressure pump 11, a high-pressure chamber 17 located at the lower end of the high-pressure pump 11, and a solenoid valve 21 located at the bottom end of the high-pressure chamber 17. The high-pressure chamber 17 is connected to the high-pressure hole 23 and the high-pressure nozzle 25 of the drill bit 24 through the valve port of the solenoid valve 21. When energized, the high-pressure pump 11 operates, pressurizes the drilling fluid entering the high-pressure pump 11 and transports it into the high-pressure chamber 17. Then, the high-pressure drilling fluid enters the high-pressure hole 23 in the drill bit 24 through the valve port of the solenoid valve 21 at the bottom end of the high-pressure chamber 17, and finally sprays out through the high-pressure nozzle 25 to form a directional jet of high-pressure drilling fluid. The turbine 4 of the first power device rotates under the action of the drilling fluid flow power, driving the control device to work. The control device finely adjusts the attitude, rotation speed, etc. of the second power device. As shown in the attached Figure 1 , an outer shell 12 is provided outside the high-pressure pump 11. The upper end of the high-pressure pump 11 is a drilling fluid introduction cavity. A liquid inlet 27 is provided on the outer shell 12. Under the power action of the high-pressure pump 11, the drilling fluid outside the outer shell 12 enters the drilling fluid introduction cavity through the liquid inlet 27, and then flows into the high-pressure chamber 17 after being pressurized by the power of the high-pressure pump 11. In order to ensure the stability of the position of the high-pressure pump 11 and the stability of the rotational power, a pump-end bearing 13 is provided at the bottom end of the high-pressure pump 11 relative to the inner side of the outer shell 12. The high-pressure pump 13 abuts against the stepped diameter change of the outer shell 12 through the pump-end bearing 13, thereby achieving stable position and stable rotation. Moreover, in order to further ensure the position stability of the high-pressure pump 11 and its outer shell 12 and prevent its radial shaking, a lower centralizer is provided at the bottom end of the high-pressure pump 11 relative to the outer side of the outer shell 12 to ensure the central position stability of the high-pressure pump 11 and the downhole motor 9 connected thereto during the working state.

[0030] In this embodiment, the valve port of the solenoid valve 21 is opened or closed by the controller when the power is on, so it is necessary to design a control and power supply line to be connected to the solenoid valve 21. Here, the design scheme of this embodiment is as follows: a central wire rod 14 connected to the solenoid valve 21 is designed to pass through the high-pressure pump 11 and the high-pressure chamber 17, and a wire 15 connected to the solenoid valve 21 is passed through the central wire rod 14. The design of the central wire rod 14 does not affect the operation of the high-pressure pump 11, nor does it hinder the flow of high-pressure drilling fluid in the high-pressure chamber 17. At the same time, it provides a channel for the wire 15 to ensure the safe and stable transmission of the wire 15. As shown in the attached figure Figure 1 As shown in the figure, the bottom end of the high-pressure chamber 17 and the drill bit 24 are in a plug-in form, the inner contact part of the plug-in is the position of the solenoid valve 21, and the outer side of the plug-in is the low-pressure chamber. The drilling fluid in the low-pressure chamber flows out through the low-pressure water hole 26. Since the solenoid valve 21 is located at the plug-in place of the high-pressure chamber 17 and the drill bit 24, the sealing performance of the solenoid valve 21 is particularly important. In this embodiment, in order to ensure the sealing effect of the solenoid valve 21 relative to the drill bit 24, the solenoid valve 21 is fixed on the drill bit 24 through the valve seat 22, and the valve port of the solenoid valve 21 corresponds to the high-pressure hole 23 of the drill bit 24. The solenoid valve 21 and the drill bit 24 are connected. Synchronous rotation, according to the requirements of directional injection, the solenoid valve 21 can be set to one, and the directional high-pressure nozzle 25 is also one, and the two correspond to each other to realize the injection of high-pressure drilling fluid at a fixed position of the drill bit 24. Of course, the number of solenoid valves 21 can also be at least two, and the valve ports of at least two solenoid valves 21 correspond one-to-one to the high-pressure holes 23 of the drill bit 24. There are also two high-pressure holes 23 of the drill bit 24. The valve ports of the solenoid valve 21 correspond to the high-pressure holes 23 and rotate synchronously. As a preferred embodiment, three solenoid valves 21 are designed on the valve seat 22, and there are also three corresponding high-pressure holes 23.

[0031] During operation, the high-pressure chamber 17, like the high-pressure pump 11 and the solenoid valve 21, rotates synchronously with the drill bit 24. The attitude sensor 8 in the control device uses an advanced strapdown algorithm to perform real-time dynamic calculations to obtain the attitude of the drill tool. The three solenoid valves 21 are fixedly connected to the three high-pressure nozzles 25 and rotate at the same time. Using the geodetic coordinate reference, the solenoid valves 21 are opened and closed at fixed formation positions and angles. That is, through control logic, the solenoid valves 21 are controlled to open and close at fixed times, so that the position and angle of the high-pressure chamber 17 connected to the high-pressure nozzles 25 are fixed, thereby realizing directional injection of high-pressure drilling fluid. The solenoid valves 21 are fixedly connected to the high-pressure nozzles 25 without relative rotation, which means that a stable seal is achieved.

[0032] Regarding the high-pressure chamber 17 involved in this embodiment, the cavity radius of the high-pressure chamber 17 is smaller than the radius of the high-pressure pump 11, and wire rod aligners 16 are provided at the upper and lower ends of the central wire rod 14 in the high-pressure chamber 17 to prevent the high-pressure chamber 17 from affecting the central wire rod 14 during the dynamic high-frequency injection of high-pressure drilling fluid, causing it to shake and further affecting the performance stability of other components. The high-pressure chamber 17 in this embodiment is a double-tube structure. The inner cavity of the inner tube accommodates the pressurized drilling fluid and the central wire rod 14, and the outer cavity of the outer tube is a low-pressure chamber that accommodates non-pressurized drilling fluid. A buffer chamber is formed between the inner tube and the outer tube, and a piston 20 with an elastic structure is provided in the buffer chamber. Moreover, the buffer chamber communicates with the low-pressure chamber through a breathing port 19 provided on the outer cavity wall on its upper side, the bottom side of the piston communicates with the high-pressure chamber, and the elastic structure is a spring 18. When the solenoid valve 21 is in the closed state, the high-pressure drilling fluid compresses the spring 18 by pushing the piston 20 to store energy and wait for the next opening of the solenoid valve 21. At this time, the drilling fluid in the buffer chamber above the piston 20 is discharged into the low-pressure chamber under the pressure of the piston 20 through the breathing port 19. Subsequently, at a certain node after the high-pressure pump 11 continuously provides high-pressure drilling fluid, the solenoid valve 21 is opened at a fixed moment to instantaneously inject high-pressure drilling fluid. After the pressure is released, the piston 20 moves downward under the action of the spring 18, and the drilling fluid in the low-pressure chamber enters the buffer chamber through the breathing port to balance the pressures on both sides of the piston 20. That is, when the solenoid valve is closed, the high-pressure drilling fluid stores energy through the piston 20, the piston 20 moves upward, and the drilling fluid in the buffer chamber is discharged through the breathing port 19 to avoid obstruction of the upward movement of the piston 20. When the solenoid valve 20 is opened, a large amount of high-pressure drilling fluid reaches the high-pressure nozzle 25 through the solenoid valve 20 in a short time, the piston 20 moves downward, and the drilling fluid in the low-pressure chamber enters the buffer chamber through the breathing port 19 to balance the pressure. Thus, the injection pressure is ensured to be stable and reliable.

[0033] In addition, regarding the control device in this embodiment, it is used to control the positions and operating states of the turbine 4, the high-pressure pump 11, and the high-pressure chamber 17. The control device includes a generator 5 connected to the turbine 4 in sequence, a circuit protection cylinder 7 containing a measurement and control circuit board 6 and an attitude sensor 8, and a downhole motor 9. The circuit protection cylinder 7 is used to protect the measurement and control circuit board 6 and the attitude sensor 8 from environmental interference in the drilling operation. The downhole motor 9 is connected to the high-pressure pump 11 of the second power device through a universal shaft 10. The generator 5 is installed on the turbine 4 and drives the rotor of the generator 5 to generate electricity by the turbine 4 to provide power for the measurement and control circuit board 6 and the attitude sensor 8. The measurement and control circuit board 6 is installed in the circuit protection cylinder 7 and provides control signals for the entire generator 5, downhole motor 9, etc. The attitude sensor 8 is used to measure the attitude, azimuth, and motion state of the upper central cylinder 2 and the turbine 4.

[0034] Embodiment Two

[0035] Based on Embodiment 1, this embodiment provides a fluid pulse rotary steering drilling tool. A fluid boosting device in Embodiment 1 is provided inside the steering drilling tool. For the technical solutions regarding the specific structure and boosting principle of the fluid boosting device, please refer to the specific description in Embodiment 1, which will not be elaborated in this embodiment. The purpose of this embodiment is to provide a stable, reliable and well-sealed fluid pulse rotary steering drilling tool by applying the fluid boosting device. In addition to the fluid boosting device in Embodiment 1, this steering drilling tool further includes an outer cylinder 1 sleeved on the outer periphery of the fluid boosting device, a drill collar connected to the upper end of the outer cylinder 1, and a drill bit 24 connected to the lower end of the outer cylinder 1. A part of the drilling fluid in the inner cavity of the outer cylinder 1 flows out through the low-pressure water eye 26 of the drill bit 24, and another part of the drilling fluid is boosted by the fluid boosting device and sprayed out through the high-pressure hole 23 and high-pressure nozzle 25 of the drill bit 24. During specific operation, the fluid boosting device placed inside the outer cylinder 1 boosts the drilling fluid flowing into the cavity of the high-pressure pump 11 from the low-pressure cavity through the liquid inlet 27, then enters the high-pressure cavity 17, and is then discharged into the high-pressure hole 23 of the drill bit 24 through the solenoid valve 21 that is intermittently opened, and then sprayed out through the high-pressure nozzle 25, completing the intermittent and equal-position spraying of high-pressure drilling fluid.

[0036] In this embodiment, the turbine 4 in the fluid boosting device is connected to the drill collar through the upper central cylinder 2. The outer cylinder 1, the drill bit 24, and the fluid boosting device rotate synchronously without relative rotation. Driven by the drill collar, the outer cylinder 1, the first power device, the second power device, and the drill bit 24 rotate synchronously. The upper central cylinder 2 is centered relative to the outer cylinder 1 through the upper centralizer 3, ensuring the stability of its central position and preventing its radial movement. In this embodiment, there is no relative rotation between the valve seat 22 and the solenoid valve 21 and the drill bit 24, nor is there a problem of poor sealing or failure. At least one solenoid valve is provided on the valve seat 22. Of course, two, three or multiple solenoid valves of other quantities can also be provided, which will not be elaborated one by one in this embodiment. Preferably, three solenoid valves 21 (not limited to three) are installed on the valve seat 22. Each solenoid valve 21 corresponds to a high-pressure hole 23 and a high-pressure nozzle 25 of the drill bit 24. Through the monitoring and control of the measurement and control circuit board 6 and the attitude sensor 8 in the control device, the opening time and duration of the solenoid valve 21 are controlled and measured. Since the solenoid valve 21 rotates synchronously with the drill bit 24, the opening time and duration of the solenoid valve 21 can directly reflect the spraying position and rock-breaking time of the high-pressure nozzle 25. The spraying position represents the steering direction, and the spraying duration represents the steering ability; high-pressure drilling fluid is sprayed each time the drill bit 24 rotates to a fixed position, forming directional hydraulic rock-breaking steering.

[0037] Finally, it should also be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0038] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple. For the relevant parts, reference can be made to the description in the method section.

[0039] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fluid pressurizing device, characterized in that: It comprises a first power device connected to a drill pipe and a drill collar, a second power device arranged to rotate synchronously with a drill bit (24), and a control device connected between the first power device and the second power device; The first power device is a turbine (4); The second power device comprises: a high-pressure pump (11), a high-pressure chamber (17) located at the lower end of the high-pressure pump (11) and a solenoid valve (21) located at the bottom end of the high-pressure chamber (17), wherein the high-pressure chamber (17) is connected to the high-pressure hole (23) and the high-pressure nozzle (25) of the drill bit (24) through the valve port of the solenoid valve (21); a central wire rod (14) connected to the solenoid valve (21) is passed through the high-pressure pump (11) and the high-pressure chamber (17), and a wire (15) connected to the solenoid valve (21) is passed through the central wire rod (14); the high-pressure chamber (17) is a double-layer tube structure, wherein the inner tube cavity accommodates pressurized drilling fluid and the middle tube cavity. The core wire rod (14) has an outer cavity of the outer tube as a low-pressure cavity for accommodating non-pressurized drilling fluid, a buffer cavity is formed between the inner tube and the outer tube, and a piston (20) with an elastic structure is provided in the buffer cavity; the buffer cavity is connected to the low-pressure cavity through a breathing port (19) provided on the outer cavity wall on the upper side thereof, and the bottom side of the piston is connected to the high-pressure cavity, and the elastic structure is a spring (18); the control device includes a generator (5) connected to the turbine (4) in sequence, a circuit protection tube (7) containing a measurement and control circuit board (6) and a posture sensor (8), and a downhole motor (9), and the downhole motor (9) is connected to the high-pressure pump (11) of the second power device through a universal shaft (10).

2. The fluid pressure boosting device according to claim 1, wherein, The high-pressure pump (11) is provided with a housing (12) outside, the housing (12) is provided with a liquid inlet (27), and the bottom end of the high-pressure pump (11) relative to the inner side of the housing (12) is provided with a pump end bearing (13), and the bottom end of the high-pressure pump (11) relative to the outer side of the housing (12) is provided with a lower stabilizer.

3. The fluid pressure boosting device according to claim 1, characterized in that, The cavity radius of the high-pressure cavity (17) is smaller than the radius of the high-pressure pump (11), and a central wire rod (14) in the high-pressure cavity (17) is provided with wire rod centralizers (16) at the upper and lower ends.

4. The fluid pressure boosting device according to claim 1, characterized in that, The solenoid valve (21) is fixed on the drill bit (24) via a valve seat (22), and the valve port of the solenoid valve (21) corresponds to the high-pressure hole (23) of the drill bit (24).

5. The fluid pressure boosting device according to claim 4, wherein, There are at least two solenoid valves (21), and the valve ports of at least two solenoid valves (21) correspond one-to-one to the high-pressure holes (23) of the drill bit (24).

6. A fluid pulse rotary steering drilling tool, characterized in that, The fluid pulse rotary guide drilling tool comprises a fluid boosting device as described in any one of claims 1 to 5, and further comprises an outer cylinder (1) sleeved on the outer periphery of the fluid boosting device, a drill collar connected to the upper end of the outer cylinder (1), and a drill bit (24) connected to the lower end of the outer cylinder (1), wherein a portion of the drilling fluid in the inner cavity of the outer cylinder (1) flows out through the low-pressure water hole (26) of the drill bit (24), and the other portion of the drilling fluid is pressurized by the fluid boosting device and ejected through the high-pressure hole (23) and the high-pressure nozzle (25) of the drill bit (24).

7. A fluid pulse rotary steering drilling tool according to claim 6, characterized in that: The turbine (4) in the fluid boosting device is connected to the drill collar through the upper central cylinder (2).

8. A fluid pulse rotary steering drilling tool according to claim 7, characterized in that: The upper central cylinder (2) is centered relative to the outer cylinder (1) through the upper centralizer (3).

9. A fluid pulse rotary steering drilling tool according to claim 7, characterized in that: Under the power of the drill collar, the outer cylinder (1), the first power device, the second power device, and the drill bit (24) rotate synchronously.

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