A horizontal well pulling tool

Abstract

The present invention provides a horizontal well pulling tool, comprising a power nipple and a functional nipple arranged above and below, wherein the power nipple contains a transmission shaft (3), a crash sleeve (9) is provided at the lower part of the functional nipple, and a collision ring (8) is provided in the functional nipple. When fluid passes through the power nipple, the transmission shaft (3) can rotate, and the rotation of the transmission shaft (3) can cause the collision ring (8) to move upward and store energy. When the collision ring (8) moves upward to a set position, the energy can be released and drive the collision ring (8) to move downward, causing the collision ring (8) to hit the crash sleeve (9). The horizontal well pulling tool can significantly reduce the friction between the continuous oil pipe and the well wall by generating radial vibration and axial pulling, increase the running depth of the continuous oil pipe in the extended reach well and the horizontal well, effectively increase the drilling pressure that can be applied to the end of the continuous oil pipe, and has broad application prospects in carrying out continuous oil pipe operations in horizontal wells.

Description

Technical Field

[0001] The invention relates to the field of horizontal well operations, and in particular to a horizontal well traction tool. Background Art

[0002] Coiled tubing is a long, threaded tubing system that can be continuously run in and out. Unlike conventional tubing, coiled tubing eliminates the need for make-up and break-out during tripping operations, making it suitable for through-the-tubing operations, pressure-operated operations, and many other tasks difficult with conventional tubing. As specialized oilfield equipment, it not only solves many challenges in conventional operations but also demonstrates promising development prospects.

[0003] In modern drilling and completion operations, coiled tubing (CT) presents challenges such as difficulty in lowering and drilling. In some cases, the drill string may even become locked, making further advancement difficult. Various technologies are currently being employed to mitigate these issues. Furthermore, CT's light weight, low stiffness, high deflection, and small radial dimensions create a significant annular gap between the CT and the casing during lowering, making it difficult to withstand axial loads and subject to significant deformation. This makes it susceptible to sinusoidal or helical buckling, and even self-locking.

[0004] The downhole tractor is a new type of downhole motion device that has been proposed as horizontal well technology has become widely used in oil and gas development. It can meet the needs of transporting various operating instruments in horizontal wells and carrying out other auxiliary operations, thereby solving the problem that downhole operating instruments or equipment are difficult to be transported to the predetermined position in highly deviated wells and horizontal wells by gravity. Chinese patent document CN 109681137 A, published on April 26, 2019, discloses a "one-way hydraulic telescopic continuous oil pipe tractor", in which the support block is used to grasp the mechanism attached to the well wall, and the mechanism that grasps the well wall by force control slips, both have a serious problem: they are easy to get stuck when encountering casing collars or mud, sand and gravel during drilling operations. Chinese patent document CN 109973032 A, published on March 24, 2019, discloses a "single-slant spring-supported continuous tubing traction robot." This robot requires electrical power. For some tool strings that do not require electrical power, the process of separately equipping them with a power supply and lowering cables into the well is too cumbersome, taking up a lot of time and increasing the cost of each operation.

[0005] With the in-depth development of oil and natural gas, the number of horizontal and highly deviated wells has increased, leading to the emergence of numerous high-efficiency coiled tubing systems. Due to their own weight, the tool string and coiled tubing must follow the casing wall during operation in and out of horizontal or highly deviated wells. This creates significant inconvenience for subsequent production stimulation operations, as downhole tools cannot reach their intended locations when operating in these well conditions. Furthermore, the coiled tubing is flexible, significantly hindering subsequent production enhancement operations. Therefore, reducing contact friction between the tool string and the wellbore is crucial. Chinese patent document CN 205805418U, published on December 14, 2016, discloses a "Hydraulic Vibration Tool." This tool utilizes the rotation of a rotor to control the relative movement of upper and lower connecting valves, thereby varying the flow area, thereby causing vibration in the hydraulic vibrator and its connected tool string. However, its drawbacks include excessive sediment retention by the filter screen, the replacement of damaged and worn rotors, and the control of the flow area. Chinese patent document CN 210509045U, published on May 12, 2019, discloses "A Hydraulic Pulse Oscillation Tool." This tool has a novel structure, but its processing and assembly are complex. Various factors such as the size and angle will affect the state of the fluid passing through the channel, ultimately resulting in its inability to generate pulses and vibrations. Summary of the Invention

[0006] In order to solve the problem of drag reduction and traction in horizontal well operations using coiled tubing, the present invention provides a horizontal well traction tool. This horizontal well traction tool can significantly reduce the friction between the coiled tubing and the well wall by generating radial vibration and axial traction, thereby increasing the running depth of the coiled tubing in extended reach wells and horizontal wells, and effectively increasing the drilling pressure that can be applied to the end of the coiled tubing. It has broad application prospects in carrying out coiled tubing operations in radial wells.

[0007] The technical solution adopted by the present invention to solve its technical problem is:

[0008] A horizontal well traction tool includes a power nipple and a functional nipple arranged above and below. The power nipple contains a transmission shaft, the lower part of the functional nipple is provided with a crash-resistant sleeve, and the functional nipple is provided with an impact ring. When fluid passes through the power nipple, the transmission shaft can rotate. The rotation of the transmission shaft can cause the impact ring to move upward and store energy. When the impact ring moves upward to a set position, the energy can be released and drive the impact ring to move downward, causing the impact ring to hit the crash-resistant sleeve.

[0009] The beneficial effects of the present invention are as follows: through radial vibration and pulse traction, on the one hand, the vibration of the tool string is achieved, which in turn drives the vibration of the coiled tubing, thereby reducing the friction resistance during its running; on the other hand, the axial intermittent impact effect of the tool is achieved, thereby increasing the axial running depth of the coiled tubing. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The drawings in the specification, which constitute a part of this application, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0011] Figure 1 Schematic diagram of the horizontal well pulling tool of the present invention before impact.

[0012] Figure 2 Schematic diagram of the horizontal well pulling tool of the present invention after impact.

[0013] Figure 3 This is a schematic diagram of the power sub.

[0014] Figure 4 It is a schematic diagram of a functional short section.

[0015] Figure 5 is a schematic diagram of a screw.

[0016] Figure 6 yes Figure 4 Schematic diagram of the impact ring area.

[0017] Figure 7 This is a schematic diagram of the impact ring.

[0018] Figure 8 This is a schematic diagram of a crash-resistant cover.

[0019] 1. Upper joint; 2. Outer sleeve; 3. Drive shaft; 4. Connecting sleeve; 5. Energy storage spring; 6. Screw; 7. Limit sleeve; 8. Impact ring; 9. Anti-collision sleeve;

[0020] 101, first flow channel; 102, second flow channel; 103, third flow channel; 104, fourth flow channel; 105, fifth flow channel; 106, sixth flow channel; 107, seventh flow channel;

[0021] 301, rotating blades;

[0022] 601, first rod segment; 602, second rod segment; 603, third rod segment; 604, fourth rod segment; 605, inner flow channel; 606, upper connecting through hole; 607, lower connecting through hole; 608, fifth rod segment;

[0023] 801, axial through hole; 802, radial through hole; 803, small piston; 804, first spring; 805, first pressure cap; 806, threaded clamp; 807, second spring; 808, second pressure cap;

[0024] 8061, annular groove; 8031, convex head. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] A horizontal well pulling tool includes a power sub and a functional sub arranged above and below. The power sub contains a transmission shaft 3, a crash sleeve 9 is provided at the lower part of the functional sub, and an impact ring 8 is provided in the functional sub. When fluid passes through the power sub, the transmission shaft 3 can rotate. The rotation of the transmission shaft 3 can cause the impact ring 8 to move upward and store energy. When the impact ring 8 moves upward to a set position, the energy can be released and drive the impact ring 8 to move downward, causing the impact ring 8 to hit the crash sleeve 9. Figure 1 and Figure 2 shown.

[0027] In this embodiment, the power sub also includes an upper joint 1 and an outer sleeve 2 connected by upper and lower threads. The transmission shaft 3 is sleeved in the outer sleeve 2. The axis of the transmission shaft 3 coincides with the axis of the outer sleeve 2. The upper end of the transmission shaft 3 is connected to the upper joint 1, and the lower end of the transmission shaft 3 is connected to the lower part of the outer sleeve 2. The transmission shaft 3 is provided with a rotating blade 301, and the transmission shaft 3 can rotate relative to the outer sleeve 2 with the axis of the transmission shaft 3 as the axis.

[0028] In this embodiment, a first flow channel 101 is provided in the upper joint 1, a second flow channel 102 is formed between the transmission shaft 3 and the outer sleeve 2, and a third flow channel 103 is provided in the lower part of the outer sleeve 2. The first flow channel 101, the second flow channel 102 and the third flow channel 103 are connected in sequence. The fluid outside the power short section can enter the power short section through the first flow channel 101, and the fluid discharged from the third flow channel 103 can enter the functional short section. Figure 3 shown.

[0029] Ball thrust bearings, bearing retaining rings and deep-groove ball bearings are provided on the upper and lower ends of the transmission shaft 3. When fluid passes through the second flow channel 102, the fluid impacts the rotating blades 301, causing the transmission shaft 3 to rotate about the axis of the transmission shaft 3. The center of gravity of the rotating blades 301 deviates from the axis of the rotating blades 301. In this way, the transmission shaft 3 will generate radial vibration during rotation.

[0030] In this embodiment, the functional short section contains a screw 6, an energy storage spring 5 and a connecting sleeve 4 which are sequentially sleeved from the inside to the outside. The upper end of the connecting sleeve 4 is threadedly connected to the outer sleeve 2 of the power short section, and the lower end of the connecting sleeve 4 is threadedly connected to the anti-collision sleeve 9. The upper end of the screw 6 is connected and fixed to the transmission shaft 3, and the transmission shaft 3 can drive the screw 6 to rotate. The lower end of the screw 6 is connected to the anti-collision sleeve 9, the upper end of the energy storage spring 5 is connected to the connecting sleeve 4, and the lower end of the energy storage spring 5 is connected to the impact ring 8. The upward movement of the impact ring 8 can compress the energy storage spring 5 and store the energy. Figure 4 shown.

[0031] The axis of the screw 6 coincides with the axis of the transmission shaft 3. The screw 6 and the transmission shaft 3 are connected by a key. The lower end of the screw 6 is inserted into the upper end of the anti-collision sleeve 9. A ball thrust bearing, a bearing retaining ring and a deep groove ball bearing are provided between the lower end of the screw 6 and the anti-collision sleeve 9. The screw 6 is a hollow tubular structure, and the transmission shaft 3 can be a hollow structure or a solid structure. The axis of the upper joint 1, the axis of the transmission shaft 3, the axis of the screw 6, the axis of the connecting sleeve 4 and the axis of the anti-collision sleeve 9 coincide, as shown in FIG. Figures 1 to 4 shown.

[0032] In this embodiment, the outer surface of the screw 6 includes a first rod segment 601, a second rod segment 602, a third rod segment 603, a fourth rod segment 604 and a fifth rod segment 608 from top to bottom. The screw 6 contains an inner flow channel 605 that runs through the axial direction. The outer surface of the second rod segment 602 is a truncated cone structure, the top end of the truncated cone structure faces downward, and the bottom end of the truncated cone structure faces upward. The third rod segment 603 is an equal-diameter structure. The outer diameter of the lower end of the second rod segment 602 is smaller than the outer diameter of the upper end of the second rod segment 602. The second rod segment 602 and the third rod segment 603 are both provided with external threads, such as Figure 5 shown.

[0033] In this embodiment, a fourth flow channel 104 is formed between the screw 6 and the connecting sleeve 4, and the fluid discharged from the power short section can enter the fourth flow channel 104. An upper connecting through hole 606 is provided in the upper side wall of the screw 6. The upper connecting through hole 606 is located in the first rod section 601. The fourth flow channel 104 is connected to the inner flow channel 605 through the upper connecting through hole 606. The flow area of ​​the upper connecting through hole 606 is smaller than the flow area of ​​the third flow channel 103.

[0034] In this embodiment, a limiting sleeve 7 is provided between the impact ring 8 and the connecting sleeve 4, and a threaded matching structure is provided in the side wall of the impact ring 8. The threaded matching structure contains an axial through hole 801 and a radial through hole 802. The axial through hole 801 and the radial through hole 802 are vertically connected. The axial through hole 801 contains a small piston 803, a first spring 804 and a first pressure cap 805 connected in sequence from top to bottom. The radial through hole 802 contains a threaded clamp 806, a second spring 807 and a second pressure cap 808 connected in sequence from inside to outside. The first pressure cap 805 and the second pressure cap 808 are both annular structures. The first pressure cap 805 and the second pressure cap 808 are both threadedly connected to the impact ring 8. During operation, the small piston 803 and the threaded clamp 806 will not separate from the impact ring 8. Figures 6 to 8 shown.

[0035] The axis of the limit sleeve 7 coincides with the axis of the screw 6, the upper end of the limit sleeve 7 abuts against the inner step surface of the connecting sleeve 4, the lower end of the limit sleeve 7 abuts against the outer step surface of the impact-resistant sleeve 9, the limit sleeve 7 and the connecting sleeve 4 have an interference fit, the limit sleeve 7 and the impact ring 8 have a clearance fit, and a guide rib and a guide groove can be provided between the limit sleeve 7 and the impact ring 8. The guide rib and the guide groove are matched and connected, and the guide rib and the guide groove both extend along the axial direction of the limit sleeve 7. The limit sleeve 7 can prevent the impact ring 8 from rotating equivalent to the connecting sleeve 4.

[0036] In this embodiment, the threaded clamp 806 is generally cylindrical in structure, with the axis of the threaded clamp 806 arranged along the diameter of the impact ring 8. The inner diameter of the threaded clamp 806 is smaller than the outer diameter of the threaded clamp 806, and the inner end of the threaded clamp 806 faces the screw 6. An annular groove 8061 is provided on the outer circumference of the threaded clamp 806, and a protrusion 8031 ​​is provided on the upper end of the small piston 803. The inner diameter of the impact ring 8 is larger than the outer diameter of the second rod segment 602 and the outer diameter of the third rod segment 603, forming an annular cavity between the impact ring 8 and the second and third rod segments 602, 603.

[0037] When the threaded clamp 806 is in the retracted state, the threaded clamp 806 disengages from the external thread, and the impact ring 8 can move freely along the axial direction of the screw 6 relative to the screw 6. The annular groove 8061 is connected to the axial through hole 801, and the protrusion 8031 ​​is engaged with the annular groove 8061. The protrusion 8031 ​​can prevent the threaded clamp 806 from moving radially along the impact ring 8.

[0038] When the threaded clamp 806 is in the extended state, the inner end of the threaded clamp 806 is connected to the thread groove of the external thread of the second rod segment 602 or the external thread of the third rod segment 603, and the screw 6 rotates to drive the impact ring 8 to move upward through the threaded clamp 806, and the protruding head 8031 ​​is no longer engaged with the annular groove 8061, and the protruding head 8031 ​​cannot prevent the threaded clamp 806 from moving radially along the impact ring 8. Figures 6 to 8 shown.

[0039] The structure of the rotating blade 301 should ensure that the transmission shaft 3 and the screw 6 can only rotate in one direction. The external threads of the second rod segment 602 and the third rod segment 603 should ensure that when the screw 6 rotates, it can drive the impact ring 8 upward through the threaded clamp 806. The side wall of the impact ring 8 can be provided with multiple threaded mating structures, which are evenly spaced along the circumference of the impact ring 8.

[0040] In this embodiment, the collision-resistant sleeve 9 contains a fifth flow channel 105, a sixth flow channel 106 and a seventh flow channel 107. The fifth flow channel 105 is located at the center of the collision-resistant sleeve 9, and the inner flow channel 605 is connected to the fifth flow channel 105. The fluid entering the fifth flow channel 105 can be discharged from the functional short section. The fourth rod segment 604 contains a lower connecting through hole 607, and the lower connecting through hole 607 is connected to the inner flow channel 605. The lower end of the sixth flow channel 106 is connected to the lower connecting through hole 607. The upper end of the sixth flow channel 106 is located at the upper end of the collision-resistant sleeve 9, and the lower end of the seventh flow channel 107 is connected to the fifth flow channel 105.

[0041] In this embodiment, when the impact ring 8 is in the lower limit position, the impact ring 8 abuts against the crash-resistant sleeve 9, the upper end of the sixth flow channel 106 is connected to the axial through hole 801, the lower part of the impact ring 8 is sleeved outside the upper end of the crash-resistant sleeve 9, and the impact ring 8 closes the upper end of the seventh flow channel 107. When the impact ring 8 is in the upper limit position, that is, when the impact ring 8 is in the set position, the position of the threaded clamp 806 corresponds to the bottom end of the frustum-shaped structure (that is, the upper end of the second rod segment 602), the threaded clamp 806 is in a retracted state, the threaded clamp 806 cannot constrain the impact ring 8, there is no connection between the impact ring 8 and the screw 6, the energy storage spring 5 can release energy to make the impact ring 8 move quickly toward the crash-resistant sleeve 9, thereby impacting the crash-resistant sleeve 9, as shown in FIG. Figures 1 to 8 shown.

[0042] The working process of the horizontal well pulling tool is described below.

[0043] The first step is to assemble the tool string and connect the horizontal well pulling tool to the end of the coiled tubing.

[0044] Step 2: Lower the coiled tubing from the injection head and place it into the designated position in the well according to the operating procedures.

[0045] Step 3: The pump truck inputs fluid to rotate the internal transmission shaft 3 of the horizontal well pulling tool.

[0046] In the third step, more specifically, the operating pump truck is turned on, and the specified fluid is continuously and steadily injected into the coiled tubing. The fluid enters the power short section through the first flow channel 101, and acts on the rotating blades 301 of the transmission shaft 3 through the second flow channel 102, causing the transmission shaft 3 to rotate. The fluid enters the functional short section through the third flow channel 103. Initially, the impact ring 8 is in the lower limit position. At this time, the threaded clamp 806 is in a retracted state, and the annular groove 8061 of the threaded clamp 806 cooperates with the small piston 803. The fluid pressure in the fourth flow channel 104 acts on the upper end of the small piston 803 through the axial through hole 801 and the annular groove 8061 in turn, pushing the small piston 803 to move downward, and the protrusion 8031 ​​disengages from the annular groove 8061, releasing the threaded clamp 806. Under the elastic force of the second spring 807, the threaded clamp 806 moves in the direction close to the screw 6. The threaded clamp 806 is in an extended state, and the inner end of the threaded clamp 806 will clamp the external thread on the screw 6. The transmission shaft 3 transmits the generated torque to the screw 6, and the screw 6 rotates with the transmission shaft 3. During the rotation, the threaded clamp 806 moves upward along the external thread on the screw 6, and at the same time drives the impact ring 8 to move axially upward, and the energy storage spring 5 is compressed to store energy.

[0047] The screw 6 rotates to generate radial vibration, and the impact ring 8 and the limit sleeve 7 also generate radial vibration during the axial upward movement. When the threaded clamp 806 moves to the second rod section 602 of the screw 6, the threaded clamp 806 moves outward along the outer conical surface of the second rod section 602. When the impact ring 8 runs to the upper end of the second rod section 602, the threaded clamp 806 disengages from the external thread of the screw 6, and at the same time, the annular groove 8061 of the threaded clamp 806 engages with the protrusion 8031 ​​of the small piston 803 again, and the threaded clamp 806 no longer limits or constrains the axial position of the impact ring 8. Because the flow area of ​​the third flow channel 103 is much larger than the flow area of ​​the inner flow channel 605, a pressure drop will be generated between the inner cavity of the functional short section and the inner channel of the screw 6, so that the impact ring 8 moves rapidly axially downward to impact the crash-resistant sleeve 9 under the dual action of the elastic force of the energy storage spring 5 (the energy storage spring 5 releases energy) and the hydraulic thrust, thereby generating a large vibration and axial traction force, driving the continuous oil pipe to vibrate and pull the continuous oil pipe downward. The above-mentioned all processes are repeated to form an intermittent vibration traction effect.

[0048] In order to facilitate understanding and description, the present invention adopts absolute position relationship to express, unless otherwise specified, the directional word "up" means Figure 1 The left direction in the . Figure 1 The present invention is described from the perspective of a reader or user, but the above-mentioned directional words cannot be understood or interpreted as limiting the scope of protection of the present invention.

[0049] The above description is merely a specific embodiment of the present invention and should not be construed as limiting the scope of the invention. Therefore, substitutions of equivalent components, or equivalent changes and modifications made within the scope of patent protection, should still fall within the scope of this patent. Furthermore, the technical features of this invention may be freely combined with one another, with other technical solutions, and with other technical solutions.

Claims

1. A horizontal well pulling tool, characterized in that: The horizontal well pulling tool comprises a power short section and a functional short section arranged above and below, wherein the power short section contains a transmission shaft (3), a crash-resistant sleeve (9) is provided at the lower part of the functional short section, and an impact ring (8) is provided in the functional short section. When fluid passes through the power short section, the transmission shaft (3) can rotate, and the rotation of the transmission shaft (3) can cause the impact ring (8) to move upward and store energy. When the impact ring (8) moves upward to a set position, the energy can be released and drive the impact ring (8) to move downward, causing the impact ring (8) to impact the crash-resistant sleeve (9); The functional short section comprises a screw (6), an energy storage spring (5) and a connecting sleeve (4) which are sequentially sleeved from the inside to the outside, the upper end of the connecting sleeve (4) is connected to the power short section, the lower end of the connecting sleeve (4) is connected to the anti-collision sleeve (9), the upper end of the screw (6) is connected and fixed to the transmission shaft (3), the transmission shaft (3) can drive the screw (6) to rotate, the lower end of the screw (6) is connected to the anti-collision sleeve (9), the upper end of the energy storage spring (5) is connected to the connecting sleeve (4), the lower end of the energy storage spring (5) is connected to the impact ring (8), and the impact ring (8) moves upward to enable the energy storage spring (5) to store the energy; The outer surface of the screw (6) comprises a first rod segment (601), a second rod segment (602), a third rod segment (603) and a fourth rod segment (604) from top to bottom. The screw (6) comprises an inner flow channel (605) extending in the axial direction. The outer surface of the second rod segment (602) is a truncated cone structure with the top of the truncated cone structure facing downward. The second rod segment (602) and the third rod segment (603) are both provided with external threads. A fourth flow channel (104) is formed between the screw (6) and the connecting sleeve (4), and the fluid discharged from the power short section can enter the fourth flow channel (104). An upper connecting through hole (606) is provided in the upper side wall of the screw (6), and the fourth flow channel (104) is connected to the inner flow channel (605) through the upper connecting through hole (606).

2. The horizontal well pulling tool according to claim 1, characterized in that: The power sub also comprises an upper joint (1) and an outer sleeve (2) connected up and down, a transmission shaft (3) is sleeved in the outer sleeve (2), the upper end of the transmission shaft (3) is connected to the upper joint (1), the lower end of the transmission shaft (3) is connected to the lower part of the outer sleeve (2), and a rotating blade (301) is provided on the outside of the transmission shaft (3), and the transmission shaft (3) can rotate relative to the outer sleeve (2).

3. The horizontal well pulling tool according to claim 2, characterized in that: A first flow passage (101) is provided in the upper joint (1), a second flow passage (102) is formed between the transmission shaft (3) and the outer sleeve (2), a third flow passage (103) is provided in the lower portion of the outer sleeve (2), the first flow passage (101), the second flow passage (102) and the third flow passage (103) are connected in sequence, the fluid discharged from the third flow passage (103) can enter the functional short section, and the center of gravity of the rotating blade (301) deviates from the axis of the rotating blade (301).

4. The horizontal well pulling tool according to claim 1, characterized in that: A limiting sleeve (7) is sleeved between the impact ring (8) and the connecting sleeve (4); a threaded matching structure is provided in the side wall of the impact ring (8); the threaded matching structure comprises an axial through hole (801) and a radial through hole (802); the axial through hole (801) and the radial through hole (802) are vertically connected; the axial through hole (801) comprises a small piston (803), a first spring (804) and a first pressure cap (805) connected in sequence from top to bottom; the radial through hole (802) comprises a threaded clamp (806), a second spring (807) and a second pressure cap (808) connected in sequence from inside to outside.

5. The horizontal well pulling tool according to claim 4, characterized in that: The outer peripheral surface of the threaded clamp (806) is provided with an annular groove (8061), the upper end of the small piston (803) is provided with a convex head (8031), and the inner diameter of the impact ring (8) is larger than the outer diameter of the second rod segment (602) and the outer diameter of the third rod segment (603); When the threaded clamp (806) is in a retracted state, the threaded clamp (806) is disengaged from the external thread, the annular groove (8061) is communicated with the axial through hole (801), the protrusion (8031) is engaged with the annular groove (8061), and the protrusion (8031) can prevent the threaded clamp (806) from moving radially along the impact ring (8); When the threaded clamp (806) is in an extended state, the threaded clamp (806) is connected to the external thread, and the screw (6) can rotate to drive the impact ring (8) to move upward through the threaded clamp (806), and the protrusion (8031) cannot prevent the threaded clamp (806) from moving radially along the impact ring (8).

6. The horizontal well pulling tool according to claim 5, characterized in that: The anti-collision sleeve (9) contains a fifth flow channel (105), a sixth flow channel (106) and a seventh flow channel (107); the inner flow channel (605) is connected to the fifth flow channel (105); the fluid entering the fifth flow channel (105) can be discharged from the functional short section; the fourth rod section (604) contains a lower connecting through hole (607); the lower end of the sixth flow channel (106) is connected to the lower connecting through hole (607); the upper end of the sixth flow channel (106) is located at the upper end of the anti-collision sleeve (9); and the lower end of the seventh flow channel (107) is connected to the fifth flow channel (105).

7. The horizontal well pulling tool according to claim 6, characterized in that: When the impact ring (8) is in the lower limit position, the impact ring (8) abuts against the impact-resistant sleeve (9), the upper end of the sixth flow channel (106) is communicated with the axial through hole (801), and the impact ring (8) closes the upper end of the seventh flow channel (107); When the impact ring (8) is at the upper limit position, the position of the threaded clamp (806) corresponds to the bottom end of the truncated cone structure, the threaded clamp (806) is in a retracted state, and the energy storage spring (5) causes the impact ring (8) to impact the impact-resistant sleeve (9).

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