A mud ball preventing centralizer with mechanical breaking function

Abstract

The application discloses a mud ball preventing centralizer with mechanical breaking function and belongs to the technical field of oil and natural gas drilling, which comprises a centralizer body, a centralizing wing arranged on the periphery of the centralizer body, a multi-stage flow distribution mechanism, an energy conversion and pulse modulation mechanism and a poking execution mechanism. The multi-stage flow distribution mechanism is used for adjusting the drilling fluid flow of a bypass flow channel entering the centralizer body according to the step change of the ground pump pressure. The energy conversion and pulse modulation mechanism is used for converting the smooth flow in the bypass flow channel into high-frequency pressure pulses. The poking execution mechanism is used for executing radial reciprocating poking actions under the drive of the high-frequency pressure pulses to break the mud ball adhered to the side wall of the centralizer body and the centralizing wing. The multi-stage flow distribution mechanism, the energy conversion and pulse modulation mechanism and the poking execution mechanism are sequentially and serially arranged in the centralizer body. The application actively breaks the mud ball by using the radial impact force driven by the high-frequency pulses to actively crush the dense mud ball, thereby significantly improving the mud ball removing efficiency of the complex stratum and effectively reducing the risk of pipe sticking.

Description

Technical Field

[0001] This invention belongs to the field of oil and gas drilling technology, specifically relating to a mud-blocking stabilizer with mechanical breaking function. Background Technology

[0002] In the drilling of oil and gas wells and deep geothermal wells (such as deep tight sandstone reservoirs), centralizers are key downhole tools for ensuring drill string centering, reducing friction, and improving cementing quality. However, when drilling through high-viscosity, easily expansive mudstone formations or in horizontal sections, centralizers often face serious "mud bag" problems. Mud bag formation not only increases the frictional resistance between the drill string and the wellbore, leading to a decrease in drilling pressure transmission efficiency, but can also clog the annulus, causing difficulties in tripping in and out of the well, and in severe cases, even inducing major downhole accidents such as well kicks, lost circulation, or stuck pipe.

[0003] Existing technological solutions include: ① Reducing cuttings adhesion by optimizing the streamlined design of the centralizer or applying low-friction materials such as Teflon to the tool surface; ② Utilizing the kinetic energy of the drilling fluid to flush away cuttings by altering the fluid state around the centralizer; ③ Directly breaking up mud packs through the rolling, sliding, or telescopic movements of mechanical components. Some designs replace sliding friction with rolling friction, using the relative motion generated by the rotation of the rollers and the staggered alloy teeth at the mounting point to effectively prevent mud packing on the centralizer; ④ When annular blockage causes pump pressure to rise, hydraulic pressure shears the second shear pin, driving the sliding sleeve downwards. Subsequently, the sliding pusher shears the first shear pin, instantly pushing the conical component hidden in the through hole outwards, breaking up the cuttings covering the upper return channel from the inside.

[0004] Existing technical problems: ① The surface coating is prone to peeling and failure in the high-wear and strong-erosion environment downhole, limiting its service life; relying solely on fluid kinetic energy flushing has a serious "flow rate dependence." When the discharge rate is limited or the drilling fluid viscosity and shear force are too high, the fluid shear force is insufficient to peel off the tightly attached mud cake, greatly reducing the anti-mud cake effect; ② Although rolling or sliding mechanical structures can assist in breaking up mud cakes, in drilling fluids with high solids content, the rollers or sliding blocks are prone to jamming due to cuttings embedding, causing tool failure downhole and even increasing the risk of tripping in and out of the well; ③ The pressure-triggered unblocking stabilizer (publication number CN112227980A) is irreversible and has a single control method. Once the pin is sheared, the actuator cannot be retracted or adjusted, making it a "one-time" unblocking mechanism; moreover, it relies on static pressure to directly push out, lacking the high-frequency dynamic impact force on dense mud cakes, resulting in limited breaking efficiency, and it cannot accurately adjust the gear and flow rate for different degrees of mud cake conditions. Summary of the Invention

[0005] In view of this, the present invention provides a mud-blocking and straightening device with mechanical breaking function to solve the above problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A mud-blocking straightener with mechanical breaking function includes a straightener body and straightening wings disposed on the outer periphery of the straightener body, and further includes: A multi-stage flow distribution mechanism is used to adjust the flow rate of drilling fluid entering the bypass channel of the centralizer body according to the stepwise changes in the surface pump pressure. An energy conversion and pulse modulation mechanism is used to convert a steady liquid flow in a bypass channel into a high-frequency pressure pulse. The piercing actuator is used to perform radial reciprocating piercing action under the drive of the high-frequency pressure pulse to break the mud sloughs attached to the side wall of the centralizer body and the centralizer wing; The multi-stage flow distribution mechanism, energy conversion and pulse modulation mechanism, and puncture execution mechanism are sequentially connected in series inside the body of the straightener.

[0007] Furthermore, the multi-stage flow distribution mechanism includes an indexing distribution outer cylinder, a hollow cascaded piston, a multi-stage index pin, a radial elastic telescopic ring, and an axial reset elastic element. The inner wall of the indexing distribution outer cylinder is provided with fixed positioning steps and axial floating steps distributed in a stepped manner. A flow adjustment window communicating with a bypass channel is opened on the indexing distribution outer cylinder. A spring receiving cavity is opened inside the hollow cascaded piston, and the axial reset elastic element is installed in the spring receiving cavity. The hollow cascaded piston is connected to the multi-stage index pin through the radial elastic telescopic ring. The hollow cascaded piston is slidably assembled inside the indexing distribution outer cylinder. The multi-stage index pin cooperates with the fixed positioning steps and the axial floating steps for graded adjustment of the opening area of ​​the flow adjustment window.

[0008] Furthermore, the upper surface of the fixed positioning step is curved and the lower surface is flat, and the upper surface of the multi-level index pin is flat and the lower surface is curved. The multi-level index pin performs indexing and positioning actions along the fixed positioning step and the axial floating step to lock the graded adjustment of the flow adjustment window opening area.

[0009] Furthermore, the energy conversion and pulse modulation mechanism includes a flow guide stator body, a stator centering bearing, a turbine rotor, a spindle, and a hydraulic pulse modulation assembly. The flow guide stator body has a circumferential flow inlet window and directional flow guide blades arranged inside. The stator centering bearing is located inside the flow guide stator body and supports the upper end of the spindle. The turbine rotor is fixedly installed on the spindle, and the lower part of the spindle is connected to the hydraulic pulse modulation assembly.

[0010] Furthermore, the hydraulic pulse modulation assembly includes a rotating modulation disk fixed to the lower end of the spindle and a stationary distribution disk axially opposite to the rotating modulation disk. The rotating modulation disk and the stationary distribution disk are respectively provided with flow windows. The flow windows are periodically overlapped and staggered by relative rotation to generate pressure pulses.

[0011] Furthermore, the hydraulic pulse modulation assembly also includes a modulation disk centering bearing, which is disposed between the rotating modulation disk and the stationary distribution disk and the inner wall of the centering device body, for supporting the rotating modulation disk and ensuring its coaxiality with the stationary distribution disk.

[0012] Furthermore, the piercing actuator includes a sliding structure, an inclined slider, and a mud-bag piercing structure. The inclined slider is fixed to the side wall of the sliding structure, and the mud-bag piercing structure is disposed on the body of the stabilizer. The inclined working surface of the inclined slider faces the mud-bag piercing structure. The sliding structure moves axially back and forth under the drive of high-frequency pressure pulses and drives the inclined slider to slide synchronously. The axial force is converted into the radial driving force of the mud-bag piercing structure through the inclined transmission.

[0013] Furthermore, the sliding structure includes a sliding sleeve body and a sliding sleeve return spring. The sliding sleeve body has an upper sliding groove and a lower sliding groove. The sliding sleeve return spring is connected to the sliding sleeve body and realizes its axial positioning. The sliding sleeve body performs high-frequency axial reciprocating motion under the combined action of high-frequency pressure pulse and sliding sleeve return spring.

[0014] Furthermore, the mud-pack puncturing structure includes a puncturing element, a puncturing element reset spring, and a spring stop. The stabilizer body is provided with a guide hole. One end of the puncturing element is slidably connected to the inclined working surface of the inclined slider, and the other end extends into the guide hole and is slidably connected to the guide hole. The spring stop is fixedly disposed at the entrance of the guide hole. One end of the puncturing element reset spring is fixedly connected to the spring stop, and the other end is fixedly connected to the puncturing element.

[0015] Furthermore, the mud-pack puncturing structure also includes a limiting structure, which is disposed at one end of the outlet of the guide hole to constrain the maximum extension stroke of the puncturing element.

[0016] The beneficial effects of this invention are as follows: 1. By integrating a multi-stage flow distribution mechanism, an energy conversion and pulse modulation mechanism, and a piercing actuator within the centralizer, and utilizing a graded index shifting mechanism composed of fixed positioning steps and axial floating steps, the flow rate of the internal bypass channel is precisely graded and cyclically controlled through the step-like fluctuations of the surface pump pressure. In conjunction with the turbine-driven hydraulic modulation component in the energy conversion and pulse modulation mechanism, the stable pressure of the drilling fluid entering the bypass channel is modulated into periodic high-frequency pressure pulses. This drives the piercing element in the piercing actuator to perform high-frequency reciprocating piercing actions along the inclined guide hole under the guidance of the inclined slider. This upgrades the traditionally difficult-to-adjust passive protection into an active mechanical mud-packing system with adjustable gears, controllable energy, and high-frequency dynamic impact capability.

[0017] 2. By upgrading the traditional passive protection mode to active mechanical breaking, the radial impact force driven by high-frequency pulses actively crushes dense mud cakes, completely destroying the integrity of the mud cake at the physical level. This significantly improves the efficiency of clearing blockages in complex formations and effectively reduces the risk of stuck drill bits. Based on the graded index shifting logic, remote and precise control is achieved from the ground, allowing the driller to flexibly change the internal flow distribution ratio by adjusting the ground pump pressure. This allows for on-demand adjustment of the piercing intensity according to the severity of the mud cake, enabling multiple cycles of reset and shifting without tripping the drill string. Simultaneously, the dynamic self-cleaning effect generated by the actuators under high-frequency pulse drive effectively disturbs and destroys the accumulation and bridging of solid particles in the moving gaps, significantly reducing the risk of mechanical jamming failure of precision mechanisms under complex drilling fluid conditions. Furthermore, efficient hydraulic pulse modulation technology converts stable pressure energy into high-frequency mechanical impact energy, enhancing the tool's energy conversion efficiency and environmental adaptability under various displacement conditions, providing strong protection for the centering reliability and operational safety of drilling tools in deep wells and complex downhole environments. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of a mud-blocking and straightening device with mechanical breaking function.

[0020] Figure 2 This is a cross-sectional view of a mud-blocking and straightening device with mechanical breaking function.

[0021] Figure 3 A three-dimensional structural diagram of the index distribution outer cylinder.

[0022] Figure 4 This is a cross-sectional view of the outer cylinder for indexing the flow distribution.

[0023] Figure 5 This is a three-dimensional structural diagram of the current-guiding stator body.

[0024] Figure 6 This is a schematic diagram of the rotating modulation disk and the stationary distribution disk.

[0025] In the figure: 1-Center body, 110-Index distribution outer cylinder, 111-Fixed positioning step, 112-Axial floating step, 113-Flow regulating window, 120-Multi-stage index pin, 130-Radial elastic telescopic ring, 140-Hollow cascaded piston, 141-Spring receiving cavity, 150-Axial reset elastic element, 210-Guide stator body, 211-Directional guide vane, 212-Circumferential inlet window, 213-Stator centering bearing, 220-Turbine rotor, 230 - Mandrel, 240- Hydraulic pulse modulation assembly, 241- Rotary modulation disk, 242- Static distribution disk, 243- Modulation disk straightening bearing, 310- Mud bag puncturing structure, 311- Guide hole, 312- Punching element, 313- Limiting structure, 314- Punching element return spring, 315- Spring stop, 320- Sliding structure, 321- Sliding sleeve body, 322- Upper sliding groove, 323- Lower sliding groove, 324- Sliding sleeve return spring, 330- Inclined slider. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] See attached document Figure 1-6 This invention provides a mud-packing centralizer with mechanical breaking function, comprising a centralizer body 1 and centralizing wings 4 disposed on the outer periphery of the centralizer body 1. A multi-stage flow distribution mechanism, an energy conversion and pulse modulation mechanism, and a piercing actuator are sequentially connected in series inside the centralizer body 1. The multi-stage flow distribution mechanism is used to adjust the drilling fluid flow rate entering the bypass channel of the centralizer body 1 according to the stepwise changes in surface pump pressure; the energy conversion and pulse modulation mechanism is used to convert the stable fluid flow in the bypass channel into high-frequency pressure pulses; and the piercing actuator is used to perform radial reciprocating piercing actions driven by the high-frequency pressure pulses to break up the mud packs adhering to the sidewalls of the centralizer body 1 and the centralizing wings 4.

[0028] In a preferred embodiment, the multi-stage flow distribution mechanism includes an indexing distribution outer cylinder 110, a hollow cascaded piston 140, a multi-stage index pin 120, a radial elastic telescopic ring 130, and an axial reset elastic element 150. The indexing distribution outer cylinder 110 is fixedly installed inside the centralizer body 1, and its inner wall is machined with fixed positioning steps 111 and axial floating steps 112 distributed in a stepped manner. The upper surface of the fixed positioning step 111 is arc-shaped, facilitating the downward sliding of the multi-stage index pin 120; its lower surface is flat, allowing it to engage and lock with the multi-stage index pin 120. A flow adjustment window 113 communicating with a bypass channel is provided on the cylinder wall of the indexing distribution outer cylinder 110. The hollow cascaded piston 140 is slidably assembled inside the indexing distribution outer cylinder 110, and its interior has a spring receiving cavity 141 for installing the axial reset elastic element 150. The hollow cascaded piston 140 is connected to the multi-stage index pin 120 via a radial elastic telescopic ring 130. The upper surface of the multi-stage index pin 120 is flat, and the lower surface is curved. Under the axial thrust generated by the surface pump pressure, the hollow cascaded piston 140 can overcome the resistance of the axial reset elastic element 150 and move downward, driving the multi-stage index pin 120 to perform indexing and positioning actions along the fixed positioning step 111 and the axial floating step 112. This enables graded adjustment of the opening area of ​​the flow regulation window 113, and precise control of the drilling fluid flow rate ratio entering the bypass channel.

[0029] In a preferred embodiment, the energy conversion and pulse modulation mechanism includes a flow-guiding stator body 210, a stator centering bearing 213, a turbine rotor 220, a spindle 230, and a hydraulic pulse modulation assembly 240. The flow-guiding stator body 210 is fixedly installed below the indexing and distribution outer cylinder 110, and has a circumferentially oriented flow inlet window 212 and directional flow guide vanes 211 inside. The stator centering bearing 213 is installed inside the flow-guiding stator body 210 and supports the upper end of the spindle 230. The turbine rotor 220 is fixedly installed on the spindle 230. The lower end of the spindle 230 is connected to the hydraulic pulse modulation assembly 240, which includes a rotating modulation disk 241 fixed to the spindle 230 and a stationary distribution disk 242 axially opposite to it. The rotating modulation disk 241 and the stationary distribution disk 242 each have several flow windows.

[0030] In a preferred embodiment, the hydraulic pulse modulation assembly 240 further includes a modulation disk centralizing bearing 243, which is disposed between the rotating modulation disk 241, the stationary distribution disk 242, and the inner wall of the centralizer body 1, to ensure the coaxiality and stability of the rotating modulation disk 241 during high-speed rotation. When the drilling fluid enters the guide stator body 210 through the flow regulating window 113, it forms a swirling flow under the guiding action of the directional guide vanes 211, impacting the turbine rotor 220 and driving the spindle 230 and the rotating modulation disk 241 to rotate at high speed. The flow windows on the rotating modulation disk 241 and the stationary distribution disk 242 periodically overlap and offset, thereby modulating the stable fluid pressure into high-frequency pressure pulses.

[0031] In a preferred embodiment, the piercing actuator includes a sliding structure 320, an inclined slider 330, and a mud-bag piercing structure 310. The sliding structure 320 mainly consists of a sliding sleeve body 321 and a sliding sleeve return spring 324. The sliding sleeve body 321 has an upper sliding groove 322 and a lower sliding groove 323. The sliding sleeve return spring 324 provides axial return force, causing the sliding sleeve body 321 to perform axial reciprocating motion under the action of high-frequency pressure pulses. The inclined slider 330 is fixed to one side of the sliding sleeve body 321, and its inclined working surface faces the mud-bag piercing structure 310 arranged on the straightening wing 4. The mud-bag piercing structure 310 includes a guide hole 311 opened on the straightener body 1, a piercing element 312 installed in the guide hole 311, a piercing element return spring 314, a spring stop 315, and a limiting structure 313. One end of the piercing element 312 slides in contact with the inclined working surface of the inclined slider 330, while the other end can slide within the guide hole 311. A spring stop 315 is fixed at the entrance of the guide hole 311, and a piercing element return spring 314 is connected between the spring stop 315 and the piercing element 312. A limiting structure 313 is provided at the exit end of the guide hole 311 to limit the maximum extension length of the piercing element 312. When the sliding sleeve body 321 reciprocates under the drive of a high-frequency pressure pulse, the axial motion is converted into radial force through the inclined slider 330, pushing the piercing element 312 outward at high speed to impact and crush the mud adhering to the straightening wing 4 and the outer wall of the body; during the pulse interval, the piercing element return spring 314 drives the piercing element 312 to retract rapidly.

[0032] Working Principle: In implementation, the centralizer is first connected to the drill string assembly and lowered into the well. During normal drilling when mud packing is not required, a low surface pump pressure is maintained. At this time, the axial reset elastic element 150 lifts the hollow cascade piston 140 to its initial position, the flow regulation window 113 is completely closed, and all drilling fluid circulates through the main channel of the centralizer body 1, with the internal mechanism in a standby state. When the driller determines that there is a risk of mud packing or abnormal torque, the pump pressure is increased in a stepped manner on the surface. The hydraulic thrust pushes the hollow cascade piston 140 downward, causing the multi-stage index pins 120 to slide along the stepped inner wall of the index distribution outer cylinder 110 and lock in place step by step, thereby gradually opening the flow regulation window 113 at the corresponding level and distributing a portion of the drilling fluid into the bypass channel. When the drilling fluid flows through the guide stator body 210, it is accelerated and impacts the turbine rotor 220, causing the rotating modulation disk 241 to rotate at high speed. The periodic opening and closing of the window with the stationary distribution disk 242 generates high-frequency pressure pulses. The sliding sleeve body 321 in the pulse-driven sliding structure 320 performs high-frequency axial reciprocating motion, which in turn pushes the piercing element 312 to perform high-frequency radial piercing action through the inclined slider 330, actively breaking up the external mud pack. If it is necessary to adjust the piercing intensity or stop the operation, the driller can further pressurize the index pin to cross the end step, and then completely depressurize. The hollow cascaded piston 140 is reset step by step along the axial floating step 112 under the action of the axial reset elastic element 150, closing the flow regulation window 113, and the mechanism returns to its initial state.

[0033] The above descriptions are merely specific embodiments of the present invention, and common knowledge regarding the specific structures and characteristics of the solutions is not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

[0034] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mud-blocking straightener with mechanical breaking function, comprising a straightener body (1) and straightening wings (4) disposed on the outer periphery of the straightener body (1), characterized in that, Also includes: A multi-stage flow distribution mechanism is used to adjust the flow rate of drilling fluid entering the bypass channel of the centralizer body (1) according to the stepwise change of the surface pump pressure. An energy conversion and pulse modulation mechanism is used to convert a steady liquid flow in a bypass channel into a high-frequency pressure pulse. The piercing actuator is used to perform radial reciprocating piercing action under the drive of the high-frequency pressure pulse to break the mud attached to the side wall of the straightener body (1) and the straightening wing (4); The multi-stage flow distribution mechanism, energy conversion and pulse modulation mechanism and puncture execution mechanism are sequentially connected in series inside the body (1) of the straightener.

2. The anti-mud-clogging and straightening device with mechanical breaking function according to claim 1, characterized in that, The multi-stage flow distribution mechanism includes an indexing distribution outer cylinder (110), a hollow cascaded piston (140), a multi-stage index pin (120), a radial elastic telescopic ring (130), and an axial reset elastic element (150). The inner wall of the indexing distribution outer cylinder (110) is provided with fixed positioning steps (111) and axial floating steps (112) distributed in a stepped manner. The indexing distribution outer cylinder (110) is provided with a flow adjustment window (113) that connects to the bypass flow channel. The hollow cascaded piston (140) is provided with a spring housing inside. The axial reset elastic element (150) is installed in the spring receiving cavity (141). The hollow cascaded piston (140) is connected to the multi-stage index pin (120) through the radial elastic telescopic ring (130). The hollow cascaded piston (140) is slidably assembled inside the index distribution outer cylinder (110). The multi-stage index pin (120) cooperates with the fixed positioning step (111) and the axial floating step (112) for graded adjustment of the opening area of ​​the flow regulating window (113).

3. A mud-blocking and straightening device with mechanical breaking function according to claim 2, characterized in that, The upper surface of the fixed positioning step (111) is curved and the lower surface is flat. The upper surface of the multi-level index pin (120) is flat and the lower surface is curved. The multi-level index pin (120) performs indexing and positioning actions along the fixed positioning step (111) and the axial floating step (112) to lock the graded adjustment of the opening area of ​​the flow adjustment window (113).

4. A mud-blocking and straightening device with mechanical breaking function according to claim 1, characterized in that, The energy conversion and pulse modulation mechanism includes a flow guide stator body (210), a stator centering bearing (213), a turbine rotor (220), a spindle (230), and a hydraulic pulse modulation assembly (240). The flow guide stator body (210) has a circumferential flow inlet window (212) and directional flow guide blades (211) arranged inside. The stator centering bearing (213) is located inside the flow guide stator body (210) and supports the upper end of the spindle (230). The turbine rotor (220) is fixedly installed on the spindle (230). The lower part of the spindle (230) is connected to the hydraulic pulse modulation assembly (240).

5. A mud-blocking and straightening device with mechanical breaking function according to claim 4, characterized in that, The hydraulic pulse modulation assembly (240) includes a rotating modulation disk (241) fixed to the lower end of the spindle (230) and a stationary distribution disk (242) axially opposite to the rotating modulation disk (241). The rotating modulation disk (241) and the stationary distribution disk (242) are respectively provided with flow windows. The flow windows are periodically overlapped and staggered by relative rotation to generate pressure pulses.

6. A mud-blocking and straightening device with mechanical breaking function according to claim 5, characterized in that, The hydraulic pulse modulation assembly (240) also includes a modulation disk centering bearing (243), which is disposed between the rotating modulation disk (241) and the stationary distribution disk (242) and the inner wall of the centering body (1), and is used to support the rotating modulation disk (241) and ensure its coaxiality with the stationary distribution disk (242).

7. A mud-blocking and straightening device with mechanical breaking function according to claim 1, characterized in that, The piercing actuator includes a sliding structure (320), an inclined slider (330), and a mud-pack piercing structure (310). The inclined slider (330) is fixed to the side wall of the sliding structure (320). The mud-pack piercing structure (310) is located on the body (1) of the stabilizer. The inclined working surface of the inclined slider (330) faces the mud-pack piercing structure (310). The sliding structure (320) moves axially back and forth under the drive of high-frequency pressure pulses and drives the inclined slider (330) to slide synchronously. The axial force is converted into the radial driving force of the mud-pack piercing structure (310) through the inclined transmission.

8. A mud-blocking and straightening device with mechanical breaking function according to claim 7, characterized in that, The sliding structure (320) includes a sliding sleeve body (321) and a sliding sleeve return spring (324). The sliding sleeve body (321) has an upper sliding groove (322) and a lower sliding groove (323). The sliding sleeve return spring (324) is connected to the sliding sleeve body (321) and realizes its axial positioning. The sliding sleeve body (321) performs high-frequency axial reciprocating motion under the combined action of high-frequency pressure pulse and sliding sleeve return spring (324).

9. A mud-blocking and straightening device with mechanical breaking function according to claim 7, characterized in that, The mud bag piercing structure (310) includes a piercing element (312), a piercing element reset spring (314), and a spring stop (315). The straightener body (1) is provided with a guide hole (311). One end of the piercing element (312) is slidably connected to the inclined working surface of the inclined slider (330), and the other end extends into the guide hole (311) and is slidably connected to the guide hole (311). The spring stop (315) is fixedly provided at the entrance of the guide hole. One end of the piercing element reset spring (314) is fixedly connected to the spring stop (315), and the other end is fixedly connected to the piercing element (312).

10. A mud-blocking and straightening device with mechanical breaking function according to claim 9, characterized in that, The mud-pack piercing structure (310) also includes a limiting structure (313), which is disposed at one end of the outlet of the guide hole (311) and is used to constrain the maximum extension stroke of the piercing element (312).

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