Directional drilling drill string anti-torque intelligent balancing tool

Abstract

The present invention discloses a tool for use in the field of directional oil drilling technology, specifically a directional drilling drill string anti-torque intelligent balancing tool, comprising a drilling state switching assembly and an anti-torque balancing assembly; the directional drilling drill string anti-torque intelligent balancing tool has two operating states: compound drilling and directional drilling. When the pump pressure is increased, the directional drilling drill string anti-torque intelligent balancing tool enters the directional drilling state, during which the drill tool housing is subjected to anti-torque, and the anti-torque balancing assembly balances the anti-torque exerted on the drill tool housing. When the pump pressure is reduced, the directional drilling drill string anti-torque intelligent balancing tool enters the compound drilling state, during which the upper drill string rotates to overcome the anti-torque exerted on the tool housing. The present invention can achieve the balance of the anti-torque exerted when directional drilling is required, effectively solving the problem of inability to accurately position drilling due to the anti-torque exerted on the drill string housing, thereby improving drilling efficiency. The tool is of great significance to the field of directional oil drilling.

Description

Technical Field

[0001] The present invention is applicable to the field of directional oil drilling, and in particular relates to a directional drilling drill string anti-torque intelligent balancing tool. Background Art

[0002] With the continuous development of the oil and gas resource development industry, the direction of oil and gas resource development is constantly changing. Shallow oil and gas resources can no longer meet national needs, and oil and gas wells need to develop in the direction of deep wells, ultra-deep wells, extended-reach horizontal wells, and other complex wells. Compared with conventional wells, horizontal wells and extended-reach wells can penetrate multiple fractured productive layers laterally, increasing the contact area between the wellbore and the oil and gas reservoir, thereby increasing oil production rates and significantly reducing production costs. However, due to the increasing complexity of the wellbore structure of horizontal and extended-reach wells, the quality of drilling equipment will directly affect the efficiency, safety, and economic benefits of drilling operations. To ensure the smooth progress of drilling operations, strict requirements must be met for the reliability and stability of drilling equipment. Therefore, the development of high-precision, high-efficiency, and high-reliability directional drilling equipment is necessary.

[0003] For these reasons, the development of an intelligent balancing tool for directional drilling drillstring anti-torque is of great significance. This tool can offset the anti-torque generated during directional drilling, allowing the drill bit to maintain a stable drilling angle. During directional drilling, the upper drillstring rotates, while only the lower drill assembly housing maintains axial sliding. This significantly reduces friction in the drillstring system and mitigates stick-slip vibrations in the drill bit, thereby improving mechanical rotational speed and drilling accuracy. Therefore, the development of this technology is of great significance to the entire petroleum industry. Summary of the Invention

[0004] The purpose of the present invention is to provide a directional drilling drill string anti-torque intelligent balancing tool to solve the related problems of directional drilling engineering described in the above background technology and improve drilling efficiency.

[0005] To solve the above problems, the present invention adopts a technical solution: a directional drilling drill string anti-torque intelligent balancing tool, which is characterized in that the directional drilling drill string anti-torque intelligent balancing tool is located between the upper drill string and the lower drill tool assembly, and includes a drilling state switching assembly and an anti-torque balancing assembly.

[0006] The drilling state switching assembly includes an upper housing, an upper core shaft, a spline joint, a spline sleeve, an upper housing, a sealing ring, a spline core shaft, a solenoid valve, an upper control unit, an upper battery pack, an upper return spring, and an upper spring retaining ring. The upper end of the drilling state switching assembly is connected to the upper drill string to achieve independent rotation of the outer shell and the internal rotating part. The torque is transmitted to the spline core shaft through the upper drill string, and the spline sleeve slides freely on the spline core shaft. The inner spline of the spline sleeve and the outer spline of the spline core shaft are always in a meshing state. The spline core shaft transmits the upper driving torque to the spline sleeve, and the spline sleeve transmits the torque to the spline joint. Under the action of pump pressure, the spline sleeve realizes the "engagement" and "disengagement" of the spline joint and the spline core shaft, thereby transmitting or isolating the upper driving torque, and further controlling the conversion of the composite drilling state and the directional drilling state of the directional drilling drill string anti-torque intelligent balancing tool. When the spline core shaft, spline sleeve and spline joint are "engaged", the directional drilling drill string anti-torque intelligent balancing tool is in the composite drilling state, and the upper drill string is subjected to the anti-torque. When "disengaged", the directional drilling drill string anti-torque intelligent balancing tool is in the directional drilling state, and the anti-torque balancing assembly is subjected to the anti-torque.

[0007] The anti-torque balancing assembly includes an upper joint, a lower core shaft, a TC bearing static sleeve, a TC bearing dynamic sleeve, a lower housing, a string bearing group, a string bearing retaining ring, an intermediate sealing retaining ring, a lower control unit, a solenoid valve, a pressure sensor, a lower battery pack, a switch commutator, an upper thrust ball bearing, a lower return spring, a control switch, a pawl sleeve, a tension spring, a pawl, a push block, a push block spring, a push block cover plate, a lower thrust ball bearing, and a lower joint. The lower end of the anti-torque balancing assembly is connected to the lower drill tool assembly. During composite drilling of a directional drilling drill string with an anti-torque intelligent balancing tool, the upper drill string drives the torque to balance the drill bit's anti-torque. During directional drilling of the directional drilling drill string with an anti-torque intelligent balancing tool, the drilling fluid drives the pawl to rotate outward and collide with the push block. After the push block is subjected to force, it is squeezed into the push block groove of the lower housing. The pawl successively strikes six push blocks evenly arranged on the circumference. The force generated by the collision acts on the lower housing, preventing the lower housing from reversing under the action of the drill bit's anti-torque, thereby balancing the drill bit's anti-torque and ensuring the stability of the tool face.

[0008] The directional drilling drill string anti-torque intelligent balancing tool is specifically implemented as follows: the pump pressure is increased, the pressure sensor detects the increase in pump pressure and converts it into a digital signal, and transmits the digital signal to the lower control unit through the signal line. The MCU in the lower control unit filters and processes the noise of the digital signal, and uses the threshold algorithm to determine whether the current pressure of the drilling fluid has reached the threshold. After the threshold is reached, the MCU sends a control signal to the solenoid valve drive circuit through the output pin, and the solenoid valve opens. At this time, the high-pressure drilling fluid passes through the diversion hole of the lower core shaft and pushes the switch commutator downward. The inner spline of the switch commutator engages with the outer spline of the lower core shaft, so that the switch commutator rotates and moves downward. During the rotation and downward movement, the clutch plate of the switch commutator engages with the clutch plate of the control switch, driving the control switch The switch rotates, thereby connecting the control switch diverter hole with the pawl groove of the pawl sleeve. During the rotation of the control switch, its sliding groove slides with the pawl sleeve blocking block. After the control switch is rotated to a certain angle, its sliding groove presses against the pawl sleeve blocking block, driving the pawl sleeve to rotate counterclockwise, which plays the role of transmitting torque. An annular flow channel is provided inside the control switch diverter hole to ensure that the drilling fluid can continue to play a role. The pressurized drilling fluid pushes the pawl to move outward through the connecting flow channel. At this time, the solenoid valve in the drilling status switching assembly is closed, and the device is in the "closed" state. The core shaft and the shell rotate synchronously. The MCU in the lower control unit generates a clock signal through the timer to record the time information of the solenoid valve opening. 10 seconds after the solenoid valve is opened, the lower control unit The MCU in the element generates a control signal and sends the control signal to the upper control unit through the wireless communication module. The wireless communication module in the upper control unit receives the wireless signal of the lower control unit. The MCU in the upper control unit controls the solenoid valve in the state switching assembly to open according to the instruction. The drilling fluid pushes the spline sleeve downward through the diversion hole of the spline core shaft. The outer spline of the spline sleeve is disengaged from the inner spline of the spline joint. The device is in the "off" state, and the upper drill string driving torque is isolated to achieve directional drilling. At this time, the pawl collides with the six push blocks evenly arranged on the circumference in succession, generating a positive torque to prevent the lower shell from reversing under the action of the drill bit's counter torque. The positive torque of this process passes through the lower core shaft, switch commutator, control switch, pawl sleeve, The pawl and push block are transmitted to the lower shell to balance the anti-torque of the drill bit, and the anti-torque balancing assembly can be started before the device is switched to the "off" state; the pump pressure is reduced, the compressed upper return spring is reset to push the spline sleeve upward, the outer spline of the spline sleeve is engaged with the inner spline of the spline joint, and the device is in the "on" state to achieve compound drilling. At this time, the switch commutator rotates and moves upward under the action of the lower return spring until the inner spline of the switch commutator is disengaged from the outer spline of the lower core shaft, driving the control switch to rotate, so that the control switch diversion hole and the pawl groove of the pawl sleeve are misaligned, and the drilling fluid cannot flow into the pawl groove of the pawl sleeve. Under the action of the tension spring, the pawl is reset, and the pressure sensor detects that the pump pressure is reduced and all solenoid valves are closed after 10 seconds in the same process as above.

[0009] As a further technical solution of the present invention, four clutch plates evenly distributed around the circumference are provided at the lower end of the switch commutator and the upper end of the control switch in the anti-torque balancing assembly. During the downward rotation of the switch commutator, the clutch plate of the switch commutator and the clutch plate of the control switch gradually engage, driving the control switch to rotate, thereby adjusting the position of the diversion hole of the control switch.

[0010] As a further technical solution of the present invention, six push block grooves evenly arranged on a circumference are provided in the lower shell of the anti-torque balancing assembly, each of which is equipped with a push block and a push block spring. After the push block collides with the pawl, the push block will be squeezed into the push block groove of the lower shell, and the pawl will collide with the six push blocks in succession. When the lower shell is reversed due to the anti-torque of the drill bit, a positive torque is generated in time through the collision of the pawl and the push block to act on the lower shell to balance the anti-torque it is subjected to.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] (1) Compared with traditional directional drilling, the directional drilling drill string anti-torque intelligent balancing tool reduces the friction of the drill string system, alleviates the stick-slip vibration of the drill bit, and improves the mechanical drilling speed; (2) It adopts intelligent control technology, integrates sensors and actuators, and can start the anti-torque balancing assembly before the device state switches to directional drilling; (3) Compared with the rotary steering system, the directional drilling drill string anti-torque intelligent balancing tool has low manufacturing cost and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of the directional drilling drill string anti-torque intelligent balancing tool of the present invention;

[0014] Figure 2 This is an axonometric view of the switch commutator of the present invention;

[0015] Figure 3 This is an axonometric diagram of the control switch of the present invention;

[0016] Figure 4 This is an axonometric view of the pawl sleeve of the present invention;

[0017] Figure 5 It is a cross-sectional view of section AA and section BB during composite drilling of the present invention;

[0018] Figure 6 It is a cross-sectional view of section AA and section BB during directional drilling of the present invention;

[0019] FIG7 is a partial circuit diagram of a control unit of the present invention;

[0020] Figure 8 It is a flowchart of the present invention;

[0021] In the figure: 1-upper housing, 2-upper core shaft, 3-spline joint, 4-spline sleeve, 5-upper housing, 6-sealing ring, 7-spline core shaft, 8-solenoid valve, 9-upper control unit, 10-upper battery pack, 11-upper return spring, 12-upper spring retaining ring, 13-upper joint, 14-lower core shaft, 15-TC bearing static sleeve, 16-TC bearing dynamic sleeve, 17-lower housing, 18-series bearing group, 19-series bearing retaining ring, 20-middle sealing retaining ring, 21-lower control unit, 22-solenoid valve, 23-pressure sensor, 24-lower battery pack, 25-switch commutator, 26-upper thrust ball bearing, 27-lower return spring, 28-control switch, 29-pawl sleeve, 30-tension spring, 31-pawl, 32-push block, 33-push block spring, 34-push block cover, 35-lower thrust ball bearing, 36-lower joint. DETAILED DESCRIPTION

[0022] The technical solutions of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] Combine Figure 1 The technical solution adopted by the present invention is: a directional drilling drill string anti-torque intelligent balancing tool, which is characterized in that: the directional drilling drill string anti-torque intelligent balancing tool is located between the upper drill string and the lower drill tool assembly, and includes a drilling state switching assembly and a anti-torque balancing assembly.

[0024] Combine Figure 1 The drilling state switching assembly includes an upper shell 1, an upper core shaft 2, a spline joint 3, a spline sleeve 4, an upper shell 5, a sealing ring 6, a spline core shaft 7, a solenoid valve 8, an upper control unit 9, an upper battery pack 10, an upper return spring 11, and an upper spring retaining ring 12. The upper end of the drilling state switching assembly is connected to the upper drill string to achieve independent rotation of the outer shell and the internal rotating parts. The torque is transmitted to the spline core shaft 7 through the upper drill string. The spline sleeve 4 slides freely on the spline core shaft 7. The inner spline of the spline sleeve 4 and the outer spline of the spline core shaft 7 are always in a meshing state. The spline core shaft 7 transmits the upper driving torque to the spline sleeve 4, and the spline sleeve 4 transfers the torque The torque is transmitted to the spline joint 3, and the spline sleeve 4 realizes the "engagement" and "disengagement" of the spline joint 3 and the spline core shaft 7 under the action of the pump pressure, thereby transmitting or isolating the upper driving torque, and further controlling the conversion of the composite drilling state and the directional drilling state of the directional drilling drill string anti-torque intelligent balancing tool. When the spline core 7, the spline sleeve 4 and the spline joint 3 are "engaged", the directional drilling drill string anti-torque intelligent balancing tool is in the composite drilling state, and the upper drill string is subjected to the anti-torque. When "disengaged", the directional drilling drill string anti-torque intelligent balancing tool is in the directional drilling state, and the anti-torque balancing assembly is subjected to the anti-torque.

[0025] Combine Figure 1The anti-torque balancing assembly includes an upper joint 13, a lower core shaft 14, a TC bearing static sleeve 15, a TC bearing dynamic sleeve 16, a lower housing 17, a string bearing group 18, a string bearing retaining ring 19, an intermediate sealing retaining ring 20, a lower control unit 21, a solenoid valve 22, a pressure sensor 23, a lower battery pack 24, a switch commutator 25, an upper thrust ball bearing 26, a lower return spring 27, a control switch 28, a pawl sleeve 29, a tension spring 30, a pawl 31, a push block 32, a push block spring 33, a push block cover plate 34, a lower thrust ball bearing 35, and a lower joint 36. The lower end of the anti-torque balancing assembly is connected to the lower drilling tool assembly. During composite drilling with the directional drilling drill string anti-torque intelligent balancing tool, the upper drill string driving torque is relied upon to balance the drill bit anti-torque; during directional drilling with the directional drilling drill string anti-torque intelligent balancing tool, the drilling fluid pushes the pawl 31 to rotate outward and collide with the push block 32. After the push block 32 is subjected to the force, it is squeezed into the push block groove of the lower shell 17. The pawl 31 successively hits the six push blocks 32 evenly arranged on the circumference. The force generated by the collision acts on the lower shell 17, preventing the lower shell 17 from reversing under the action of the drill bit anti-torque, thereby balancing the drill bit anti-torque and ensuring the stability of the tool face. Six push block grooves are evenly arranged in a circumference in the lower shell 17 of the said counter-torque balancing assembly, and a push block 32 and a push block spring 33 are installed inside each push block groove. This arrangement can not only prevent the pawl 31 from being stuck by too many push blocks 32 when moving outward, but also can generate a positive torque in time to balance the counter-torque on the lower shell 17 through the collision between the pawl 31 and the push block 32 when the lower shell 17 is subjected to the counter-torque of the drill bit and reverses.

[0026] Combine Figure 2 、 Figure 3 and Figure 4 In the anti-torque balancing assembly, a spline is provided inside the switch commutator 25. Under the action of high-pressure drilling fluid, the switch commutator 25 is pushed downward, and the internal spline of the switch commutator 25 engages with the external spline of the lower core shaft 14, thereby enabling the switch commutator 25 to rotate and move downward. Four clutch plates are evenly distributed on the circumference at the lower end of the switch commutator 25 and the upper end of the control switch 28. During the downward rotation of the switch commutator 25, the clutch plates gradually engage to transmit torque and drive the control switch 28 to rotate, thereby adjusting the position of the diversion hole of the control switch 28. An annular flow channel is opened inside the control switch 28, which can ensure that the drilling fluid can continuously act on the pawl 31 through the diversion hole of the control switch 28 during the continuous rotation of the lower core shaft 14. There are also two 180° rotation grooves on the lower surface. A pawl groove is opened on the pawl sleeve 29, and two 180° locking blocks are provided inside the lower end. The locking blocks of the pawl sleeve 29 slide in conjunction with the rotation groove of the control switch 28 to transmit torque.

[0027] In a specific embodiment, combining Figure 1 、 Figure 5 、 Figure 6 , Figure 7 and Figure 8The directional drilling drill string anti-torque intelligent balancing tool is specifically implemented as follows: increase the pump pressure, the pressure sensor 23 detects the increase in pump pressure and converts it into a digital signal through U15, transmits the digital signal to the lower control unit 21 through the signal line, and the MCU in the lower control unit 21 filters and processes the digital signal. Through the threshold algorithm, it is determined whether the current pressure of the drilling fluid reaches the threshold. After reaching the threshold, the MCU sends a control signal to the solenoid valve drive circuit through the output pin, and the solenoid valve 22 opens. At this time, the high-pressure drilling fluid passes through the diversion hole of the lower core shaft 14 and pushes the switch commutator 25 downward. The inner spline of the switch commutator 25 engages with the outer spline of the lower core shaft 14, thereby 5 rotates counterclockwise and moves downward, the rotation angle is 0~60°, during the counterclockwise rotation and downward movement, the clutch plate of the switch commutator 25 is engaged with the clutch plate of the control switch 28, driving the control switch 28 to rotate counterclockwise, and the rotation angle range is consistent with the rotation angle of the switch commutator 25, which is 0~60°, so that the diversion hole of the control switch 28 is connected with the pawl groove of the pawl sleeve 29; during the counterclockwise rotation of the control switch 28, its sliding groove and the positioning block of the pawl sleeve 29 slide together, and after the control switch 28 rotates 60° counterclockwise, its sliding groove presses against the positioning block of the pawl sleeve 29, driving the pawl sleeve 29 to rotate counterclockwise, playing the role of transmitting torque; the diversion hole of the control switch 28 is provided with an annular flow channel to ensure drilling The fluid can continue to play a role, and the pressurized drilling fluid pushes the pawl 31 to move outward through the connecting flow channel. At this time, the solenoid valve 8 in the drilling state switching assembly is closed, and the device is in the "closed" state. The core shaft and the shell rotate synchronously. The MCU in the lower control unit 21 generates a clock signal through the timer to record the time information of the opening of the solenoid valve 22. 10 seconds after the solenoid valve 22 is opened, the MCU in the lower control unit 21 generates a control signal and sends the control signal to the upper control unit 9 through the wireless communication module. The wireless communication module in the upper control unit 9 receives the wireless signal of the lower control unit 21, and the MCU in the upper control unit 9 controls the solenoid valve in the state switching assembly according to the instruction. When the valve 8 is opened, the drilling fluid pushes the spline sleeve 4 downward through the diversion hole of the spline core shaft 7, and the outer spline of the spline sleeve 4 is disengaged from the inner spline of the spline joint 3. The device is in the "off" state, and the upper drill string driving torque is isolated, realizing directional drilling. At this time, the pawl 31 collides with the six push blocks 32 evenly arranged on the circumference in succession, generating a positive torque to prevent the lower housing 17 from reversing under the action of the drill bit's counter-torque. In this process, the positive torque is transmitted to the lower housing 17 in sequence through the lower core shaft 14, the switch commutator 25, the control switch 28, the pawl sleeve 29, the pawl 31, and the push block 32, achieving the effect of balancing the drill bit's counter-torque, and being able to start the counter-torque balancing assembly before the device switches to the "off" state;As the pump pressure decreases, the compressed upper return spring 11 resets and pushes the spline sleeve 4 upward. The external splines of the spline sleeve 4 engage with the internal splines of the spline joint 3, and the device enters the "closed" state, achieving compound drilling. At this time, the switch commutator 25 rotates clockwise and moves upward under the action of the lower return spring 27 until the internal splines of the switch commutator 25 disengage from the external splines of the lower core shaft 14. This drives the control switch 28 to rotate clockwise, causing the diverter hole of the control switch 28 to misalign with the pawl groove of the pawl sleeve 29, preventing drilling fluid from flowing into the pawl groove of the pawl sleeve 29. Under the action of the tension spring 29, the pawl 31 resets. The pressure sensor 23 detects the decrease in pump pressure and, following the above process, closes all solenoid valves after 10 seconds.

[0028] The above description is only a preferred embodiment of the present invention and does not impose any limitation on the present invention. Although the present invention is described in detail in the above embodiments, those skilled in the art can still modify the above technical solutions. Based on these embodiments, other embodiments obtained by those skilled in the art without creative work are also within the scope of protection of the present invention.

Claims

1. Directional drilling drill string anti-torque intelligent balancing tool, characterized by: The directional drilling drill string anti-torque intelligent balancing tool is located between the upper drill string and the lower drill assembly, and includes a drilling state switching assembly and an anti-torque balancing assembly; The drilling state switching assembly comprises an upper shell (1), an upper core shaft (2), a spline joint (3), a spline sleeve (4), an upper shell (5), a sealing ring (6), a spline core shaft (7), a solenoid valve (8), an upper control unit (9), an upper battery pack (10), an upper return spring (11), and an upper spring retaining ring (12). The upper end of the drilling state switching assembly is connected to the upper drill string to achieve independent rotation of the outer shell and the internal rotating part. The upper shell (1) and the upper shell (5) are both threadedly connected to the spline joint (3). The spline sleeve (4 ) is provided with internal and external splines at the upper end, the spline core shaft (7) is provided with two 180° diversion holes in the circumferential direction and an external spline is provided at the upper end, the spline sleeve (4) slides freely on the spline core shaft (7), the internal splines of the spline sleeve (4) and the external splines of the spline core shaft (7) are always in a meshing state, the spline core shaft (7) transmits the upper driving torque to the spline sleeve (4), the spline sleeve (4) transmits the torque to the spline joint (3), and the spline sleeve (4) realizes the "meshing" and "disengagement" of the spline joint (3) and the spline core shaft (7) under the action of the pump pressure, thereby playing a role. The function of transmitting or isolating the upper driving torque is to further control the conversion between the composite drilling state and the directional drilling state of the directional drilling drill string anti-torque intelligent balancing tool; when the spline core shaft (7), the spline sleeve (4) and the spline joint (3) are "engaged", the directional drilling drill string anti-torque intelligent balancing tool is in the composite drilling state, and the upper drill string bears the anti-torque; when "disengaged", the directional drilling drill string anti-torque intelligent balancing tool is in the directional drilling state, and the anti-torque balancing assembly bears the anti-torque, the sealing ring (6) prevents the leakage of drilling fluid, and the spline core shaft ( 7) A solenoid valve (8) is provided in the diversion hole for controlling the flow of drilling fluid. The solenoid valve (8) is connected to the upper control unit (9) and the upper battery pack (10) via a signal line. The upper control unit (9) includes an MCU, a wireless receiving module, a storage unit, a solenoid valve drive circuit, and a protection circuit, and is integrated on a PCB. The upper battery pack (10) uses a high-temperature resistant battery and is waterproofed. The upper return spring (11) is arranged between the spline sleeve (4) and the upper spring retaining ring (12). The upper spring retaining ring (12) has pressure-bearing and positioning functions. The anti-torque balancing assembly comprises an upper joint (13), a lower core shaft (14), a TC bearing static sleeve (15), a TC bearing dynamic sleeve (16), a lower housing (17), a string bearing group (18), a string bearing retaining ring (19), an intermediate sealing retaining ring (20), a lower control unit (21), a solenoid valve (22), a pressure sensor (23), a lower battery pack (24), a switch commutator (25), an upper thrust ball bearing (26), a lower return spring (27), a control switch (28), a pawl sleeve (29), a tension spring (30), a pawl (31), a push block (32), a push block spring (33), a push block cover plate (34), a lower thrust ball bearing (35), and a lower joint (36). The lower end of the anti-torque balancing assembly is connected to the lower drilling tool group. The directional drilling drill string anti-torque intelligent balancing tool is connected to each other, and plays a role in balancing the anti-torque during directional drilling. The upper shell (5) and the lower shell (17) are both connected to the upper joint (13) by threaded connection. The TC bearing static sleeve (15), the TC bearing dynamic sleeve (16), the string bearing group (18), the string bearing retaining ring (19), the intermediate sealing retaining ring (20), the upper thrust ball bearing (26), and the lower thrust ball bearing (35) form a bearing module. The upper end of the lower core shaft (14) is provided with two diversion holes with a 180-degree angle and an external spline, and the lower end is provided with a diversion hole. The lower end of the lower shell (17) is provided with a push block groove. The upper end of the lower core shaft (14) is provided with an electromagnetic valve (22). The lower control unit (21) includes an MCU, an ADC module, an electromagnetic The valve drive circuit, wireless transmitter module, storage unit, protection circuit, signal amplifier, filter circuit are integrated into the PCB. The pressure sensor (23) is used to monitor the drilling fluid pressure signal. The lower battery pack (24) uses a high-temperature resistant battery and is connected to the lower control unit (21), the pressure sensor (23) and the electromagnetic valve (22) through a signal line and is waterproofed. The switch commutator (25) is provided with a spline inside and a clutch plate at the lower end. Under the action of the high-pressure drilling fluid, the switch commutator (25) is pushed downward. The internal spline of the switch commutator (25) is engaged with the external spline of the lower core shaft (14), thereby enabling the switch commutator (25) to rotate and move downward. The upper end of the lower return spring (27) contacts the upper thrust ball bearing (26), and the lower end contacts the lower outer spline. The control switch (28) is in contact with the housing (17). A clutch plate is provided at the upper end of the control switch (28). When the switch commutator (25) rotates and moves downward, the clutch plate of the switch commutator (25) is engaged, so that the control switch (28) can realize rotational movement within a certain angle. An annular flow channel and a diversion hole are provided at the lower end of the control switch (28). Two sliding grooves with an angle of 180° are also provided on the lower surface. A pawl groove is provided on the pawl sleeve (29). Two positioning blocks with an angle of 180° are provided inside the lower end. The positioning blocks slide with the sliding groove of the control switch (28) to play the role of transmitting torque. The pawl (31) is installed in the pawl groove of the pawl sleeve (29) and performs rotational movement within a certain angle. One end of the tension spring (30) is connected to the pawl sleeve (29) and the other end is connected to the pawl (31).Play a reset function, the push block (32) is installed in the push block groove of the lower shell (17), one end of the push block (32) is a round surface to reduce wear, one end of the push block spring (33) contacts the push block (32), and the other end contacts the push block cover (34), playing a reset function, the push block cover (34) is fixed to the lower shell (17) by screws, and the lower joint (36) is used to connect with the lower drilling tool assembly; when the directional drilling drill string anti-torque intelligent balancing tool is directional drilling, the pawl (31) rotates outward and collides with the push block (32), and the push block (32) is squeezed into the push block groove of the lower shell (17) after being subjected to force. The force generated by the collision acts on the lower shell (17), preventing the lower shell (17) from reversing under the action of the drill bit anti-torque, playing a role in balancing the anti-torque.

2. The directional drilling drill string anti-torque intelligent balancing tool according to claim 1, characterized in that: The drilling pressure and torque are transmitted to the upper core shaft (2), the spline core shaft (7) and the lower core shaft (14) in sequence through the upper drill string, and the three are connected by threads; the spline sleeve (4) slides freely on the spline core shaft (7), and the spline sleeve (4) engages or disengages with the spline joint (3) when the pump pressure changes.

3. The directional drilling drill string anti-torque intelligent balancing tool according to claim 1, characterized in that: In the anti-torque balancing assembly, four clutch plates are evenly distributed on the circumference of the lower end of the switch commutator (25) and the upper end of the control switch (28). During the downward rotation of the switch commutator (25), the clutch plates of the switch commutator (25) and the clutch plates of the control switch (28) gradually engage, driving the control switch (28) to rotate, thereby adjusting the position of the diversion hole of the control switch (28).

4. The directional drilling drill string anti-torque intelligent balancing tool according to claim 1, characterized in that: An annular flow channel is provided inside the control switch (28) in the anti-torque balancing assembly, which ensures that the drilling fluid can continuously act on the pawl (31) through the diversion hole of the control switch (28) during the continuous rotation of the lower core shaft (14).

5. The directional drilling drill string anti-torque intelligent balancing tool according to claim 1, characterized in that: Six push block grooves are arranged evenly around the circumference of the lower shell (17) of the anti-torque balancing assembly, each of which is equipped with a push block (32) and a push block spring (33). After the push block (32) collides with the ratchet (31), the push block (32) is squeezed into the push block groove of the lower shell (17). The ratchet (31) collides with the six push blocks (32) in succession. When the lower shell (17) is subjected to the drill bit anti-torque and reverses, a positive torque is generated in time by the collision between the ratchet (31) and the push block (32) to act on the lower shell (17) to balance the anti-torque it receives.

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