High-speed shear type pulse generator for measurement while drilling

Abstract

The invention discloses a high-speed shear type pulse generator for measurement while drilling, which belongs to the technical field of drilling equipment and comprises a power unit, a reversing unit and a shear valve unit. The power unit comprises a driving motor and a driving shaft which are mounted on the inner side of the connecting cylinder; the shear valve unit comprises a rotary valve stator, a rotary valve rotor and a rotary shaft which are installed on the inner side of the hanging cylinder, the reversing unit comprises a reciprocating motion column and a limiting structure, the reciprocating motion column is connected with the connecting cylinder through the limiting structure, and the driving shaft is connected with the reciprocating motion column. The driving shaft is matched with the limiting structure to enable the reciprocating motion column to reciprocate in the axial direction; a pushing-rotating structure is arranged between the end, away from the driving shaft, of the reciprocating motion column and the end, away from the rotary valve rotor, of the rotary shaft. According to the invention, the conventional reciprocating rotation of the driving motor is changed into one-way continuous rotation, so that the motion complexity of the driving motor is reduced, the control difficulty of the driving motor is reduced, and the generation of high-frequency signals is facilitated.

Description

Technical Field

[0001] This invention relates to a pulse generator, specifically a high-speed shear pulse generator for measurement while drilling. Background Technology

[0002] Measurement while drilling (MSWL) is an advanced technology in directional drilling that allows for continuous directional drilling while measuring information near the bottom of the borehole and immediately transmitting that information to the surface. Among the various methods, the drilling fluid pulse method is the most widely used in MSWL. Continuous wave transmission, a bandgap transmission method, offers relatively high data rates and strong anti-interference capabilities. The core component for generating continuous waves is the continuous wave signal generator, which is mainly classified into shear valve type and rotary valve type based on its working principle. The shear valve type continuous wave signal generator uses a reciprocating rotor, which generates signals with higher transmission rates and better anti-clogging capabilities, effectively reducing equipment maintenance costs.

[0003] When a shear valve type continuous wave signal generator operates, the motor drives the rotary valve rotor via the drive shaft, causing it to oscillate between fully open and fully closed valve ports. This periodically changes the flow area of ​​the drilling fluid, thereby generating drilling fluid pressure waves with different characteristics. Currently, research on shear valve type continuous wave signal generators mainly focuses on the shape of the shear valve port and motor control. The connection between the motor and the rotary valve rotor is typically a traditional direct connection. For example, patent application CN202321795737.8 proposes a novel shear valve type mud pulse generator. This generator incorporates a valve body shell, rotor assembly, and stator assembly. The rotor and stator, with their smaller radial dimensions, are housed within the smaller valve body shell. The shear valve pulse, equipped with a valve sleeve assembly, is positioned within a suspension section. The rotor and stator assemblies are constrained and assembled through the valve body shell, forming the valve sleeve assembly. This improves overall structural stability, prevents the shear valve pulse from loosening within the suspension section, and facilitates the reliable application of the shear valve type mud pulse generator in deeper, smaller wells. However, in this patent, the direct connection between the motor and the rotary valve rotor means that the rotary valve rotor needs to frequently rotate forward and reverse at high speed during operation of the shear valve type continuous wave signal generator. This results in rapid oscillation of the rotary valve rotor relative to the stator, causing the drive motor to frequently accelerate and decelerate from rest to standstill. This method makes position and speed control under high-speed motor rotation more difficult, making it difficult to generate high-frequency continuous wave signals. It also significantly increases downhole drive power consumption and reduces the lifespan of the drive motor, which is detrimental to the long-term downhole operation of the continuous wave signal generator. Therefore, a high-speed shear pulse generator for drilling measurement is proposed to improve the above problems. Summary of the Invention

[0004] The present invention aims to solve the above-mentioned problems caused by the reciprocating rotation of the shear pulse motor in the prior art, and proposes a high-speed shear pulse generator for drilling measurement, which changes the drive motor from conventional reciprocating rotation to unidirectional continuous rotation, reduces the complexity of the drive motor motion, reduces the difficulty of drive motor control, and also facilitates the generation of high-frequency signals.

[0005] To achieve the above-mentioned objectives, the technical solution of the present invention is as follows: A high-speed shear pulse generator for measurement while drilling includes a power unit, a reversing unit, and a shear valve unit. The power unit includes a drive motor and a drive shaft installed inside a connecting cylinder, with one end of the drive shaft fixed to the output shaft of the drive motor via a coupling. The shear valve unit includes a rotary valve stator, a rotary valve rotor, and a rotating shaft installed inside a suspension cylinder. The rotary valve stator and the rotary valve rotor cooperate with each other. The suspension cylinder is connected to the connecting cylinder, and one end of the rotating shaft is fixed to the rotary valve rotor. The reversing unit includes a reciprocating moving column and a limiting structure. The reciprocating moving column is connected to the connecting cylinder via the limiting structure, and the drive shaft is connected to the reciprocating moving column. The drive shaft, in conjunction with the limiting structure, causes the reciprocating moving column to reciprocate along its axial direction. A push-rotor structure is provided between the end of the reciprocating moving column away from the drive shaft and the end of the rotating shaft away from the rotary valve rotor, so that during the reciprocating movement of the reciprocating moving column along its axial direction, the drive shaft drives the rotary valve rotor to alternately rotate in both directions.

[0006] Furthermore, the end of the drive shaft away from the drive motor is provided with a bidirectional thread, and the end of the reciprocating column near the drive shaft is provided with a connecting groove; the bidirectional thread is threaded to the inner side of the connecting groove, and the drive shaft uses the bidirectional thread and the connecting groove to cooperate with the limiting structure to make the reciprocating column move back and forth along its axial direction. Furthermore, the limiting structure includes a fixed plate installed inside the connecting cylinder, a movable plate fixedly sleeved on the outside of the reciprocating moving column, and a guide slide column with one end fixed to the movable plate near the drive shaft; the fixed plate has a through hole at its center for the drive shaft to pass through, and the fixed plate has a guide slide hole that slides with the guide slide column.

[0007] Furthermore, the end of the rotating shaft away from the rotary valve rotor is provided with a movable groove, and the push-rotor structure includes a drive slider fixed on the circumferential side wall of the reciprocating moving column and an irregularly shaped slide groove provided on the inner wall of the movable groove; the drive slider slides in cooperation with the irregularly shaped slide groove, and during the process of the reciprocating moving column carrying the drive slider to move back and forth, the drive slider drives the rotating shaft to carry the rotary valve rotor to alternately rotate forward and reverse by sliding in cooperation with the irregularly shaped slide groove.

[0008] Furthermore, the irregular groove is a curved strip groove arranged along the axial direction of the movable groove.

[0009] Furthermore, a telescopic sleeve is installed between the rotating shaft and the reciprocating moving column, and the telescopic sleeve covers the outside of the reciprocating moving column.

[0010] Furthermore, a telescopic sleeve 2 is installed between the fixed disk and the movable disk, and the telescopic sleeve 2 is covered on the outside of the drive shaft.

[0011] Furthermore, the driving slider is cylindrical, and a rotating sleeve is coaxially rotatably sleeved on the outer side of the cylindrical driving slider.

[0012] Furthermore, a stator cap is installed at the end of the suspension cylinder away from the connecting cylinder, and a retrieval head is vertically installed on the outer side of the stator cap.

[0013] Furthermore, the power unit also includes a rotary transformer, which is connected to the connecting cylinder.

[0014] The working principle of this invention is as follows: By using a drive motor to rotate the drive shaft in one direction, and with the cooperation of the fixed plate, the movable plate, and the guide slide column, the unidirectional rotation of the drive shaft can drive the reciprocating moving column to move back and forth along its axis. By utilizing the sliding cooperation between the drive slider and the irregular sliding groove, the reciprocating moving column drives the rotating shaft to alternately rotate the rotary valve rotor along its axis, thereby causing the rotary valve rotor to swing between fully open and fully closed valve ports, generating a mud pulse signal with high resolution.

[0015] In summary, the present invention has the following advantages: 1. This invention changes the drive motor from conventional reciprocating rotation to unidirectional continuous rotation, reducing the complexity of the drive motor's motion and thus reducing the difficulty of controlling the drive motor. It also facilitates the generation of high-frequency signals. 2. Both the first and second telescopic sleeves in this invention are anti-torsion elastic sleeves, which can alternately perform positive torsional stretching and reverse torsional compression, which can prevent friction and wear between them and the rotating shaft and reciprocating moving column, thus helping to extend their service life. 3. The present invention utilizes the rolling friction between the rotating sleeve and the irregular groove during the movement of the drive slider. Compared with the sliding friction between the drive slider and the irregular groove, the rolling friction is smaller, thus better protecting the irregular groove and the drive slider. Attached Figure Description

[0016] Figure 1 This is an overall sectional view of this application; Figure 2 This is a three-dimensional structural diagram of the commutation unit driving the rotating shaft of this application in the positive rotation state; Figure 3This is a three-dimensional structural diagram of the reversing unit driving the rotating shaft of this application in the reverse rotation state; Figure 4 This is a schematic diagram of the split structure of the commutation unit in this application; Figure 5 This is a schematic diagram of the front cross-section of the reversing unit of this application in the state where the moving column slides away from the movable slot; Figure 6 This is a schematic diagram of the front cross-section of the reversing unit of this application in the state where the moving column is slid into the movable slot; Figure 7 A partial perspective view of the irregularly shaped groove and drive slider of the commutation unit in this application. Figure 1 ; Figure 8 A partial perspective view of the irregularly shaped groove and drive slider of the commutation unit in this application. Figure 2 ; Figure 9 This is a diagram illustrating the relative sliding of the irregularly shaped groove and the drive slider in the reversing unit of this application. In the picture: 1. Retrieval head; 2. Stator cover; 3. Suspension cylinder; 4. Rotary valve stator; 5. Rotary valve rotor; 6. Rotating shaft; 61. Movable groove; 62. Irregular slide groove; 7. Connecting cylinder; 8. Rotary transformer; 9. Drive motor; 10. Reversing unit; 101. Moving column; 1011. Connecting groove; 102. Drive slider; 103. Movable disc; 104. Guide slide column; 105. Telescopic sleeve one; 106. Telescopic sleeve two; 11. Drive shaft; 111. Bidirectional thread; 112. Fixed disc; 1121. Guide slide hole. Detailed Implementation

[0017] To more clearly illustrate the present invention, the following description, in conjunction with preferred embodiments and accompanying drawings, further clarifies the invention. Those skilled in the art should understand that the specific description below is illustrative rather than restrictive and should not be construed as limiting the scope of protection of the present invention.

[0018] This invention provides a high-speed shear pulse generator for measurement while drilling. Please refer to [link to relevant documentation]. Figure 1-4 It includes a power unit, a reversing unit 10, and a shear valve unit.

[0019] Regarding the power unit, specifically, such as Figure 1 As shown, the power unit includes a drive motor 9 and a drive shaft 11 installed inside the connecting cylinder 7. One end of the drive shaft 11 is fixed to the output shaft end of the drive motor 9 via a coupling. The power unit also includes a rotary transformer 8, which is connected to the connecting cylinder 7.

[0020] Specifically, regarding the shear valve unit, such as... Figure 1As shown, the shear valve unit includes a rotary valve stator 4, a rotary valve rotor 5, and a rotating shaft 6 installed inside the suspension cylinder 3. The rotary valve stator 4 and the rotary valve rotor 5 cooperate with each other. The suspension cylinder 3 is connected to the connecting cylinder 7. One end of the rotating shaft 6 is fixed to the rotary valve rotor 5. A stator cover 2 is installed at the end of the suspension cylinder 3 away from the connecting cylinder 7. A retrieval head 1 is vertically installed on the outer side of the stator cover 2.

[0021] Specifically, regarding the commutation unit 10, such as... Figure 2-4 As shown, the reversing unit 10 includes a reciprocating moving column 101 and a limiting structure. The reciprocating moving column 101 is connected to the connecting cylinder 7 through the limiting structure. The drive shaft 11 is connected to the reciprocating moving column 101. The drive shaft 11, in conjunction with the limiting structure, causes the reciprocating moving column 101 to move back and forth along its axial direction. A push-rotor structure is provided between the end of the reciprocating moving column 101 away from the drive shaft 11 and the end of the rotating shaft 6 away from the rotary valve rotor 5, so that during the reciprocating movement of the reciprocating moving column 101 along its axial direction, the drive rotating shaft 6 drives the rotary valve rotor 5 to alternately rotate in both directions.

[0022] Based on the coordinated arrangement of the reciprocating moving column 101, the limiting structure, and the push-rotating structure, the drive shaft 11, in conjunction with the limiting structure, can cause the reciprocating moving column 101 to move back and forth along its axial direction. This, in turn, allows the reciprocating moving column 101, in conjunction with the push-rotating structure, to drive the rotating shaft 6 to alternately rotate the rotary valve rotor 5 in both forward and reverse directions. This causes the rotary valve rotor 5 to oscillate between fully open and fully closed valve ports, thereby generating a mud pulse signal with higher resolution.

[0023] As can be seen, by setting the commutation unit 10, the drive motor 9 can be changed from conventional reciprocating rotation to unidirectional continuous rotation, which reduces the complexity of the drive motor 9's motion, thereby reducing the control difficulty of the drive motor 9, and also facilitates the generation of high-frequency signals.

[0024] It should be further noted that when this scheme uses a triangular valve orifice, the generated mud pulse signal has a larger amplitude than other mud pulse signals, and it lasts for a longer time under high drilling fluid pressure, resulting in a higher signal resolution.

[0025] Among them, such as Figure 4 As shown, the end of the drive shaft 11 away from the drive motor 9 is provided with a bidirectional thread 111, and the end of the reciprocating column 101 near the drive shaft 11 is provided with a connecting groove 1011. The bidirectional thread 111 is threaded to the inner side of the connecting groove 1011. The drive shaft 11 uses the bidirectional thread 111 and the connecting groove 1011 to cooperate with the limiting structure to make the reciprocating column 101 move back and forth along its axial direction.

[0026] It should be further explained that the inner side of the connecting groove 1011 is provided with a thread that is compatible with the bidirectional thread 111. The fit between the bidirectional thread 111 at the end of the drive shaft 11 and the thread on the inner side of the connecting groove 1011 is equivalent to the fit between the threaded screw and the nut block.

[0027] Specifically, regarding the limiting structure in the commutation unit 10, such as... Figure 2-4 As shown, in this embodiment, the limiting structure includes a fixed disk 112 installed inside the connecting cylinder 7, a movable disk 103 fixedly sleeved on the outside of the reciprocating moving column 101, and a guide slide 104 with one end fixed to the movable disk 103 near the drive shaft 11. The fixed disk 112 has a through hole at its center for the drive shaft 11 to pass through, and the fixed disk 112 has a guide slide hole 1121 that slides with the guide slide 104. The cooperation of the fixed disk 112, the movable disk 103, and the guide slide 104 ensures that the unidirectional rotating drive shaft 11 drives the reciprocating moving column 101 to reciprocate along its axial direction.

[0028] Among them, such as Figure 5 and Figure 6 As shown, the end of the rotating shaft 6 away from the rotary valve rotor 5 is provided with a movable groove 61. The push-rotating structure includes a drive slider 102 fixed to the circumferential side wall of the reciprocating moving column 101 and an irregularly shaped slide groove 62 provided on the inner wall of the movable groove 61. The drive slider 102 slides in engagement with the irregularly shaped slide groove 62. The irregularly shaped slide groove 62 is a curved strip groove arranged along the axial direction of the movable groove 61. During the reciprocating movement of the reciprocating moving column 101 with the drive slider 102, the drive slider 102 pushes the rotating shaft 6 to alternately rotate the rotary valve rotor 5 in both forward and reverse directions by sliding in engagement with the irregularly shaped slide groove 62 (e.g., ...). Figure 9 As shown in the figure, in order to better illustrate the relative position of the irregular groove 62 and the driving slider 102 during the reciprocating movement of the reciprocating column 101 carrying the driving slider 102, Figure 7 and Figure 8 All are displayed using a perspective method, such as Figure 7 and Figure 8 As shown, these are the relative positions of the irregular groove 62 and the driving slider 102 during the reciprocating movement of the reciprocating column 101 carrying the driving slider 102.

[0029] In addition, the drive slider 102 is cylindrical, and a rotating sleeve is coaxially rotatably sleeved on the outer side of the cylindrical drive slider 102. The rotating sleeve can generate rolling friction between the drive slider 102 and the irregular groove 62 during the movement of the drive slider 102. Compared with the sliding friction between the drive slider 102 and the irregular groove 62, the rolling friction is smaller, which better protects the irregular groove 62 and the drive slider 102.

[0030] Furthermore, such as Figure 2-4As shown, a telescopic sleeve 105 is installed between the rotating shaft 6 and the reciprocating moving column 101, and the telescopic sleeve 105 covers the outside of the reciprocating moving column 101. The telescopic sleeve 105 is a torsional elastic sleeve. Similarly, a telescopic sleeve 106 is installed between the fixed disk 112 and the movable disk 103, and the telescopic sleeve 106 covers the outside of the drive shaft 11.

[0031] The first telescopic sleeve 105 can undergo adaptive deformation while the rotating shaft 6 rotates and the reciprocating moving column 101 moves, that is, it alternates between forward torsional stretching and reverse torsional compression, without frictional wear between it and the reciprocating moving column 101; similarly, the second telescopic sleeve 106 can undergo adaptive deformation while the reciprocating moving column 101 moves back and forth with the movable disk 103, that is, it alternates between stretching and compression, and also without frictional wear between it and the drive shaft 11, which helps to extend the service life of the first telescopic sleeve 105 and the second telescopic sleeve 106.

[0032] The working principle of this invention is as follows: The drive motor 9 drives the drive shaft 11 to rotate in one direction. With the cooperation of the fixed disk 112, the movable disk 103, and the guide slide column 104, the unidirectionally rotating drive shaft 11 drives the reciprocating column 101 to move back and forth along its axial direction. (e.g., ...) Figure 5 and Figure 6 (As shown) Thus, by utilizing the sliding engagement between the drive slider 102 and the irregularly shaped slide groove 62, the reciprocating column 101 drives the rotating shaft 6 to alternately rotate forward and backward along its axial direction by reciprocating along its own axis (as shown). Figure 2 and Figure 3 As shown in the figure, this causes the rotary valve rotor 5 to swing between fully open and fully closed valve ports, thereby generating a mud pulse signal with higher resolution.

[0033] This solution is based on the coordinated arrangement of the reciprocating moving column 101, the limiting structure, and the push-rotating structure. The drive shaft 11, in conjunction with the limiting structure, allows the reciprocating moving column 101 to move back and forth along its axial direction. The sliding engagement between the drive slider 102 and the irregular groove 62 allows the reciprocating moving column 101 to drive the rotating shaft 6 to alternately rotate the rotary valve rotor 5 in both forward and reverse directions. This causes the rotary valve rotor 5 to oscillate between fully open and fully closed valve ports, thereby generating a high-resolution mud pulse signal. This transforms the drive motor 9 from a conventional reciprocating rotation to a unidirectional continuous rotation, reducing the complexity of the drive motor 9's motion and thus reducing the control difficulty of the drive motor 9. It also facilitates the generation of high-frequency signals. Compared to existing technologies, the telescopic sleeve 105 in this solution can undergo adaptive deformation while the rotating shaft 6 rotates and the reciprocating column 101 moves, that is, it alternates between forward torsional stretching and reverse torsional compression, and will not cause frictional wear between it and the reciprocating column 101. The telescopic sleeve 106 can also undergo adaptive deformation while the reciprocating column 101 moves back and forth with the movable disc 103, that is, it alternates between stretching and compression, and will also not cause frictional wear between it and the drive shaft 11, which helps to extend the service life of the telescopic sleeve 105 and the telescopic sleeve 106.

[0034] Compared with the prior art, this solution uses a rotating sleeve that is coaxially rotated around the outside of the cylindrical drive slider 102. The rotating sleeve can generate rolling friction with the irregular groove 62 as it moves with the drive slider 102. Compared with the sliding friction between the drive slider 102 and the irregular groove 62, the rolling friction is smaller, which better protects the irregular groove 62 and the drive slider 102.

[0035] In summary, based on the coordinated arrangement of the reciprocating moving column, the limiting structure, and the push-rotating structure, the reciprocating moving column can be moved axially by the drive shaft in conjunction with the limiting structure. The sliding engagement between the drive slider and the irregularly shaped groove allows the reciprocating moving column to drive the rotating shaft, which in turn drives the rotary valve rotor to alternately rotate forward and backward. This causes the rotary valve rotor to oscillate between fully open and fully closed valve ports, generating a high-resolution mud pulse signal. This transforms the drive motor from a conventional reciprocating rotation to a unidirectional continuous rotation, reducing the complexity of the drive motor's motion and thus the difficulty of controlling it. It also facilitates the generation of high-frequency signals. Furthermore, the telescopic sleeve can rotate within the rotating shaft and... The reciprocating moving column undergoes adaptive deformation during its movement, alternating between forward torsional stretching and reverse torsional compression, without frictional wear between it and the reciprocating moving column. Similarly, the telescopic sleeve two undergoes adaptive deformation while the reciprocating moving column carries the movable disc, alternating between stretching and compression, again without frictional wear between it and the drive shaft, thus extending the service life of both telescopic sleeves. Furthermore, a rotating sleeve is coaxially fitted around the outside of the cylindrical drive slider. This rotating sleeve, as it moves with the drive slider, generates rolling friction with the irregularly shaped groove. Compared to the sliding friction between the drive slider and the irregularly shaped groove, the rolling friction is smaller, better protecting both the irregularly shaped groove and the drive slider.

[0036] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A high-speed shear pulse generator for drilling measurement, comprising a power unit, a reversing unit (10), and a shear valve unit; the power unit comprises a drive motor (9) and a drive shaft (11) installed inside a connecting cylinder (7), one end of the drive shaft (11) being fixed to the output shaft end of the drive motor (9) via a coupling; the shear valve unit comprises a rotary valve stator (4), a rotary valve rotor (5), and a rotating shaft (6) installed inside a suspension cylinder (3), the rotary valve stator (4) and the rotary valve rotor (5) cooperating with each other, the suspension cylinder (3) being connected to the connecting cylinder (7), and one end of the rotating shaft (6) being fixed to the rotary valve rotor (5); characterized in that, The reversing unit (10) includes a reciprocating moving column (101) and a limiting structure. The reciprocating moving column (101) is connected to the connecting cylinder (7) through the limiting structure. The drive shaft (11) is connected to the reciprocating moving column (101). The drive shaft (11) cooperates with the limiting structure to make the reciprocating moving column (101) move back and forth along its axial direction. A push-rotor structure is provided between the end of the reciprocating moving column (101) away from the drive shaft (11) and the end of the rotating shaft (6) away from the rotary valve rotor (5), so that the reciprocating moving column (101) drives the rotating shaft (6) to alternately rotate forward and backward during the process of moving back and forth along its axial direction.

2. The high-speed shear pulse generator for drilling measurement as described in claim 1, characterized in that, The end of the drive shaft (11) away from the drive motor (9) is provided with a bidirectional thread (111), and the end of the reciprocating column (101) near the drive shaft (11) is provided with a connecting groove (1011). The bidirectional thread (111) is threaded to the inside of the connecting groove (1011). The drive shaft (11) uses the bidirectional thread (111) and the connecting groove (1011) to cooperate with the limiting structure so that the reciprocating column (101) moves back and forth along its axial direction.

3. The high-speed shear pulse generator for drilling measurement as described in claim 1, characterized in that, The limiting structure includes a fixed plate (112) installed inside the connecting cylinder (7), a movable plate (103) fixedly sleeved on the outside of the reciprocating moving column (101), and a guide slide (104) with one end fixed to the movable plate (103) near the drive shaft (11); the fixed plate (112) has a through hole at its center for the drive shaft (11) to pass through, and the fixed plate (112) has a guide slide hole (1121) that slides with the guide slide (104).

4. The high-speed shear pulse generator for drilling measurement as described in claim 1, characterized in that, The rotating shaft (6) is provided with a movable groove (61) at the end away from the rotary valve rotor (5). The push-rotor structure includes a drive slider (102) fixed on the circumferential side wall of the reciprocating column (101) and a shaped slide groove (62) provided on the inner wall of the movable groove (61). The drive slider (102) slides in cooperation with the shaped slide groove (62). During the process of the reciprocating column (101) moving back and forth with the drive slider (102), the drive slider (102) pushes the rotating shaft (6) to alternately rotate forward and reverse with the rotary valve rotor (5) by sliding in cooperation with the shaped slide groove (62).

5. A high-speed shear pulse generator for measurement while drilling as described in claim 4, characterized in that, The irregular groove (62) is a curved strip groove arranged along the axial direction of the movable groove (61).

6. A high-speed shear pulse generator for drilling measurement as described in claim 1, characterized in that, A telescopic sleeve (105) is installed between the rotating shaft (6) and the reciprocating moving column (101), and the telescopic sleeve (105) covers the outside of the reciprocating moving column (101).

7. A high-speed shear pulse generator for drilling measurement as described in claim 3, characterized in that, A telescopic sleeve (106) is installed between the fixed disk (112) and the movable disk (103), and the telescopic sleeve (106) covers the outside of the drive shaft (11).

8. A high-speed shear pulse generator for drilling measurement as described in claim 4 or 5, characterized in that, The driving slider (102) is cylindrical, and a rotating sleeve is coaxially rotatably sleeved on the outside of the cylindrical driving slider (102).

9. A high-speed shear pulse generator for measurement while drilling as described in claim 1, characterized in that, The suspension cylinder (3) is equipped with a stator cover (2) at one end away from the connecting cylinder (7), and a retrieval head (1) is vertically installed on the outside of the stator cover (2).

10. A high-speed shear pulse generator for measurement while drilling as described in claim 1, characterized in that, The power unit also includes a rotary transformer (8), which is connected to the connecting cylinder (7).

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