Multiple activation reamer

Abstract

The present disclosure relates to the technical field of drilling equipment and provides a re-activatable reamer, which includes a body, a sliding sleeve, a first joint, a ball seat, a reaming assembly, a destructible plugging ball and a hole-blocking ball. The sliding sleeve has a flow channel; the first joint includes a sealing section sleeved on the outer periphery of the sliding sleeve and a gap section spaced around the outer periphery of the sliding sleeve; the ball seat is fixed in the flow channel and has a ball seat opening corresponding to the flow channel; the reaming assembly includes a trigger and a tool; the destructible plugging ball is used to be placed to block the ball seat opening and increase the hydraulic pressure of the sliding sleeve above the ball seat so that the sliding sleeve moves and squeezes the trigger; the hole-blocking ball is placed after the destructible plugging ball seals the ball seat opening and can be used to block the liquid inlet so that the destructible plugging ball breaks and no longer blocks the ball seat opening. The re-activatable reamer can be activated for multiple reaming and can be used for multiple reaming in the well, greatly improving the efficiency of drilling and reaming.

Description

Technical Field

[0001] The present disclosure relates to the technical field of drilling equipment, and in particular to a multi-activatable reamer. Background Art

[0002] With the deepening understanding of reservoir formation mechanisms and the continued advancement of oil and gas field development, innovation in drilling tools has become crucial. Under this backdrop, reaming technology has emerged. This technology uses specialized reaming tools in conjunction with the drill bit to expand the wellbore during the drilling process and then close it after use.

[0003] Practical applications have shown that reaming technology offers significant advantages in addressing complex underground conditions, reducing overall drilling costs, accelerating drilling rates, and improving well construction quality and safety. Consequently, reaming tools are becoming an indispensable and crucial tool in oil drilling operations.

[0004] Existing reamers generally utilize hydraulic pressure to control their activation and deactivation, and the primary methods for hydraulically controlling reamers include differential pressure activation and ball-drop activation. However, regardless of whether differential pressure or ball-drop activation is used, existing reamers can only ream once and cannot be used multiple times underground. Furthermore, conventional single-action reamers require repeated drilling and tool replacement during routine operations, with a single operation consuming an average of 12-18 hours. This severely restricts drilling efficiency and makes it difficult to efficiently ream different diameters. Conventional single-action reamers require repeated drilling and tool replacement during routine operations, with a single operation consuming an average of 12-18 hours. Consequently, there is an urgent need for a new type of reamer to address the existing problem of reamers being able to only ream once, unable to be used multiple times underground, and severely restricting drilling efficiency. Summary of the Invention

[0005] The embodiments of the present disclosure provide a multi-activatable reamer, in order to solve the problem in the prior art that the reamer can only be activated once for reaming and cannot be used multiple times underground, which seriously restricts drilling efficiency.

[0006] The multi-activatable reamer provided in the embodiment of the present disclosure includes a body, a sliding sleeve, a first joint, a ball seat, a reaming assembly and a destructible plugging ball;

[0007] The sliding sleeve can be slidably arranged in the body, and a flow channel for liquid flow is formed in the sliding sleeve;

[0008] The first joint is fixedly arranged in the body, and comprises a sealing section sleeved on the outer periphery of the sliding sleeve, and a gap section spaced around the outer periphery of the sliding sleeve;

[0009] The ball seat is fixedly arranged in the flow channel and is provided with a ball seat opening corresponding to the flow channel;

[0010] The reaming assembly includes a triggering member and a tool member disposed below the sliding sleeve, and the triggering member can cause the tool member to expand outward under the squeezing action of the sliding sleeve;

[0011] The destructible plugging ball is used to be placed to block the opening of the ball seat and increase the hydraulic pressure of the sliding member above the ball seat, so that the sliding member moves to squeeze the trigger member;

[0012] Wherein, the sliding sleeve is located on the upper and lower side walls of the ball seat and is respectively provided with a liquid inlet hole and a liquid outlet hole;

[0013] When the sliding sleeve squeezes the trigger member, the liquid inlet and the liquid outlet are respectively connected to the inner wall gap of the gap section to form a temporary flow channel;

[0014] The multi-activatable eye reamer further includes a hole-blocking ball;

[0015] The hole-blocking ball is dropped after the destructible blocking ball blocks the ball seat opening, and can be used to block the liquid inlet hole and further increase the hydraulic pressure of the sliding sleeve above the ball seat so that the destructible blocking ball breaks and no longer blocks the ball seat opening.

[0016] In one embodiment, it further includes an elastic reset component, and the elastic reset component is transmission-connected to the sliding sleeve;

[0017] In the working condition that the destructible plugging ball ruptures and no longer blocks the ball seat opening, the elastic reset component causes the sliding sleeve to reset and move away from the trigger member.

[0018] In one embodiment, the elastic reset assembly includes an elastic claw and a compression spring;

[0019] The elastic claws are elastically connected to the top of the sliding sleeve and the inner wall of the body respectively;

[0020] The compression spring is elastically connected to the bottom end of the sliding sleeve and the tool member respectively;

[0021] When the sliding member moves toward the trigger member, the elastic claw and the compression spring respectively store elastic potential energy, and when the elastic claw and the compression spring release the elastic potential energy, the sliding member can be moved away from the trigger member.

[0022] In one embodiment, when the sliding sleeve moves away from the trigger member and returns to the initial position, the sealing section in the first joint blocks the liquid inlet hole accordingly.

[0023] In one embodiment, a plurality of the liquid inlet holes are provided in the side circumferential wall of the sliding sleeve at intervals along the same circumferential direction;

[0024] A plurality of the liquid outlet holes are arranged in the side circumferential wall of the sliding sleeve at intervals along the same circumferential direction.

[0025] In one embodiment, the multi-activatable reamer further includes a second joint;

[0026] The second joint is fixedly sleeved on the peripheral wall of the sliding sleeve below the ball seat, and the sliding sleeve can synchronously drive the second joint to move and squeeze the triggering member.

[0027] In one embodiment, the trigger member is configured as a disc spring, and the tool member is disposed on the outer periphery of the disc spring;

[0028] When the disc spring is squeezed by the sliding sleeve and the second joint, it can correspondingly drive the tool element to expand outward.

[0029] In one embodiment, the multi-activatable reamer further includes a hydraulic shift module;

[0030] The hydraulic shift module is correspondingly arranged below the reaming assembly and can adjust the amplitude of the outward expansion of the tool member under different hydraulic pressures.

[0031] In one embodiment, the hydraulic shift module includes a diverter baffle, a sliding body, a baffle ball and a shift baffle;

[0032] The diversion baffle is arranged corresponding to the flow channel and can partially block the fluid;

[0033] The sliding body and the diverter baffle are slidably arranged, and a liquid inlet gap is formed between the lower portion and the diverter baffle, and a liquid outlet gap is opened on the upper portion;

[0034] The blocking ball is installed in the sliding body through a blocking spring and can block the liquid inlet gap under the elastic force of the blocking spring;

[0035] The shift baffle is arranged at the liquid outlet gap above the diverter baffle and can press the trigger member upward under the action of hydraulic pressure to change the outward expansion amplitude of the tool member.

[0036] In one possible implementation manner, the flow-blocking balls and the flow-blocking springs are provided in a plurality of groups in a one-to-one correspondence along the height direction of the sliding body.

[0037] Compared with related technologies, the technical solution provided by the embodiments of the present disclosure has the following advantages:

[0038] The multi-activatable eye reamer provided by the disclosed embodiment cleverly arranges a sliding sleeve, a ball seat, a destructible plugging ball, a hole-blocking ball and an eye-reaming assembly, and uses the destructible plugging ball and the hole-blocking ball to respectively change the hydraulic size of the internal flow channel of the sliding sleeve, so that the sliding sleeve can slide downward to trigger the eye-reaming assembly to expand outward, or the sliding sleeve can slide upward to cause the eye-reaming assembly to contract inward and reset, thereby allowing the multi-activatable eye reamer to be activated for eye reaming multiple times and can be used for eye reaming multiple times underground, thereby greatly improving the drilling and eye-reaming efficiency.

[0039] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood by reading the detailed description below with reference to the accompanying drawings, in which several embodiments of the present disclosure are shown by way of example and not limitation, wherein:

[0041] In the drawings, the same or corresponding reference numerals denote the same or corresponding parts.

[0042] Figure 1 A schematic diagram of a standby state of a multi-activatable reamer provided by an embodiment of the present disclosure is shown;

[0043] Figure 2 A schematic diagram of an expanded state of a multi-activatable reamer provided by an embodiment of the present disclosure is shown;

[0044] Figure 3 A schematic diagram of a reset state of a multi-activatable reamer provided by an embodiment of the present disclosure is shown;

[0045] Figure 4 A schematic diagram of a hydraulic shift module in a multi-activatable reamer provided in an embodiment of the present disclosure is shown.

[0046] Explanation of the reference numerals in the figure: 1, body; 2, sliding member; 21, flow channel; 22, liquid inlet hole; 23, liquid outlet hole; 24, elastic claw; 25, compression spring;

[0047] 3. First joint; 31. Sealing section; 32. Gap section; 4. Ball seat; 41. Ball seat opening;

[0048] 5. Second joint; 6. Reaming assembly; 61. Trigger; 62. Tool;

[0049] 7. Destructible plugging ball; 8. Hole plugging ball;

[0050] 9. Hydraulic shift module; 91. Diverter baffle; 92. Sliding body; 921. Liquid inlet gap; 922. Liquid outlet gap; 93. Flow control ball; 94. Flow control spring; 95. Shift baffle. DETAILED DESCRIPTION

[0051] To make the purposes, features, and advantages of the present disclosure more apparent and understandable, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present disclosure without creative work shall fall within the scope of protection of the present disclosure.

[0052] The embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0053] Combine Figure 1 、 Figure 2 and Figure 3 As shown, the embodiment of the present disclosure provides a multi-activatable reamer, which includes a body 1, a sliding sleeve 2, a first joint 3, a ball seat 4, a reaming assembly 6, a destructible plugging ball 7 and a hole-blocking ball 8; the sliding sleeve 2 can be slidably inserted into the body 1, and a flow channel 21 for liquid flow is formed in the sliding sleeve 2; the first joint 3 is fixedly arranged in the body 1, including a sealing section 31 sleeved on the outer periphery of the sliding sleeve 2, and a gap section 32 spaced around the outer periphery of the sliding sleeve 2; the ball seat 4 is fixedly arranged in the flow channel 21, and is provided with a ball seat opening 41 corresponding to the flow channel 21; the reaming assembly 6 includes a trigger member 61 and a tool member 62 arranged below the sliding sleeve 2, and the trigger member 61 can cause the tool member 62 to expand outward under the extrusion of the sliding sleeve 2; the destructible plugging ball 7 is used to release the sealing ball seat opening 41 and increase the hydraulic pressure of the sliding sleeve 2 above the ball seat 4, so that the sliding sleeve 2 moves to squeeze the trigger member 61;

[0054] Among them, the sliding sleeve 2 is located on the upper and lower side walls of the ball seat 4, and a liquid inlet hole 22 and a liquid outlet hole 23 are respectively opened; when the sliding sleeve 2 squeezes the trigger part 61, the liquid inlet hole 22 and the liquid outlet hole 23 are respectively connected with the inner wall side gap of the gap section 32 to form a temporary flow channel; the plugging ball 8 is put into the ball seat mouth 41 after the destructible plugging ball 7 blocks the ball seat mouth, which can be used to block the liquid inlet hole 22 and further increase the hydraulic pressure of the sliding sleeve 2 above the ball seat 4, so that the destructible plugging ball 7 breaks and no longer blocks the ball seat mouth 41.

[0055] The multiple activation type reamer can be used in conjunction with the drilling bit equipment, and can perform multiple reaming operations during the drilling process, such as Figure 1As shown, when the multi-activatable reamer is in the standby state, the slide sleeve 2 forms a flow channel 21 for liquid flow, which can directly guide the liquid to flow, and the reaming assembly 6 below the slide sleeve 2 will not be triggered, so it will not affect the normal drilling function of the drill bit equipment.

[0056] like Figure 2 As shown, when it is necessary to expand the well, it is only necessary to put the destructible plugging ball 7 into the flow channel 21 in the sliding sleeve 2, so that the destructible plugging ball 7 will fall into the ball seat 4 in the flow channel 21 and block the ball seat opening 41 in the ball seat 4. At this time, the flow channel 21 in the sliding sleeve 2 is temporarily blocked. As the liquid accumulates and pressurizes in the upper half of the flow channel 21, when a certain threshold is reached, it will drive the sliding sleeve 2 to slide downward, and after the sliding sleeve 2 slides downward for a certain distance, the liquid inlet hole 22 and the liquid outlet hole 23 in the sliding sleeve 2 can be respectively The gaps on the inner wall side of the gap section 32 in the first joint 3 are respectively connected to each other, thereby forming a temporary flow channel. The cross-sectional area of the temporary flow channel is 15%-25% of the flow channel 21, which is used to dynamically reduce the liquid pressure in the upper half of the flow channel 21 to stabilize it at a certain pressure value. At this time, after the sliding sleeve 2 slides downward, it can still continue to squeeze and trigger the trigger member 61 in the reaming assembly 6, so that the tool member 62 can expand outward under the continuous squeezing action of the sliding sleeve 2. In this way, the multi-activatable reamer can perform reaming work through the outward-expanding tool member 62.

[0057] like Figure 3 As shown, when the reamer that can be activated multiple times needs to be reset after the drilling work is completed, it is only necessary to put multiple plugging balls 8 into the flow channel 21 in the sliding sleeve 2 accordingly. The plugging balls 8 will move toward the liquid inlet hole 22 under the action of the hydraulic pressure and block the liquid inlet hole 22. At this time, the temporary flow channel formed by the liquid inlet hole 22, the gap and the liquid outlet hole 23 is also blocked. In the blocked state, the matching clearance between the plugging ball 8 and the liquid inlet hole 22 is less than 0.5mm. At this time, as the liquid in the upper half of the flow channel 21 in the sliding sleeve 2 continues to accumulate and pressurize, when the hydraulic pressure is greater than the bearing range of the destructible plugging ball 7 (the bursting pressure of the destructible plugging ball is 1 / 2 of the working pressure .2-1.8 times), the destructible plugging ball 7 will be squeezed and broken, so that the ball seat opening 41 in the ball seat 4 will be opened again, and the broken destructible plugging ball 7 and the hole-blocking ball 8 will flow downward from the ball seat opening 41 and be discharged. At this time, the flow channel 21 in the slide sleeve 2 will restore the liquid guiding flow function, and the slide sleeve 2 will no longer be subjected to the hydraulic pressure, so that the trigger member 61 in the eye-reaming assembly 6 will no longer be squeezed and triggered. The tool member 62 can be retracted inwardly and reset, and the slide sleeve 2 can also slide upward and reset accordingly (the upward sliding can be driven by electromagnetic, hydraulic, elastic, etc.), so that the multi-activatable eye reamer can be restored to the corresponding position. Figure 1 The standby state shown is shown, and the reaming work can be continued when the reaming work is needed again.

[0058] In summary, the multi-activatable reamer provided by the disclosed embodiment cleverly arranges the slide 2, ball seat 4, destructible plugging ball 7, plugging ball 8, and reaming assembly 6. The destructible plugging ball 7 and plugging ball 8 respectively change the hydraulic pressure of the internal flow channel 21 of the slide 2, enabling the slide 2 to slide downward to trigger the reaming assembly 6 to expand outward, or to slide upward to retract the reaming assembly 6 inward to reset. This allows the multi-activatable reamer to perform 3-5 consecutive reaming operations of varying sizes, reducing time costs by 60%-70%. Multiple reaming operations can be performed underground, significantly improving drilling and reaming efficiency.

[0059] In one embodiment, the multi-activatable eye expander further includes an elastic reset assembly, and the elastic reset assembly is transmission-connected to the sliding sleeve 2; when the destructible plugging ball 7 ruptures and no longer blocks the ball seat opening 41, the elastic reset assembly resets the sliding sleeve 2 away from the trigger member 61.

[0060] Specific, combined Figure 1 and Figure 2 To further explain in detail, an elastic reset component is provided and is transmission-connected to the sliding sleeve 2, so that when the sliding sleeve 2 slides downward to squeeze and trigger the trigger member 61 in the eye-opening assembly 6, the elastic reset component stores elastic potential energy accordingly. When the destructible plugging ball 7 ruptures and no longer blocks the ball seat opening 41, and the sliding sleeve 2 is no longer subjected to hydraulic pressure, the elastic reset component can release the elastic potential energy accordingly, so that the sliding sleeve 2 can quickly move away from the trigger member 61 and perform an upward reset movement. The sliding stroke of the sliding sleeve 2 is 15 mm-20 mm.

[0061] The specific arrangement of the elastic reset component has the beneficial effects of being simple in structure and being able to quickly and automatically realize the upward reset of the slide member 2 .

[0062] In one embodiment, the elastic reset assembly includes an elastic claw 24 and a compression spring 25; the elastic claw 24 is elastically connected to the top of the sliding member 2 and the inner wall of the main body 1 respectively; the compression spring 25 is elastically connected to the bottom end of the sliding member 2 and the tool member 62 respectively; wherein, when the sliding member 2 moves toward the trigger member 61, the elastic claw 24 and the compression spring 25 respectively store elastic potential energy, and when the elastic claw 24 and the compression spring 25 release the elastic potential energy, they can enable the sliding member 2 to move away from the trigger member 61.

[0063] Specific, combined Figure 1 and Figure 2To further explain in detail, the elastic reset assembly is specifically configured to include an elastic claw 24 and a compression spring 25, and the elastic claw 24 is connected to the top of the sliding sleeve 2, and the compression spring 25 is connected to the bottom of the sliding sleeve 2, so that when the sliding sleeve 2 slides downward to squeeze and trigger the trigger part 61 in the eye-opening assembly 6, the elastic claw 24 is stretched to store elastic potential energy, and the compression spring 25 is compressed to store elastic potential energy; when the destructible plugging ball 7 breaks and no longer blocks the ball seat opening 41, and the sliding sleeve 2 is no longer subjected to hydraulic pressure, the elastic claw 24 can shorten to release elastic potential energy, and the compression spring 25 can extend to release elastic potential energy, and the two can coordinately act on the top and bottom ends of the sliding sleeve 2 at the same time, fully ensuring that the sliding sleeve 2 can quickly and automatically rise and reset.

[0064] In one embodiment, when the sliding member 2 is moved away from the trigger member 61 and reset to the initial position, the sealing section 31 in the first joint 3 blocks the liquid inlet hole 22 accordingly.

[0065] Specific, combined Figure 1 and Figure 2 To further explain in detail, the liquid inlet hole 22 and the liquid outlet hole 23 in the peripheral wall of the sliding sleeve 2 are respectively distributed on the upper and lower sides of the ball seat 4, so that when the sliding sleeve 2 squeezes the trigger member 61, the liquid inlet hole 22, the gap on the inner wall side of the gap section 32 and the liquid outlet hole 23 can form a temporary flow channel; when the sliding sleeve 2 is reset and moved to the initial position away from the trigger member 61, the liquid inlet hole 22 is correspondingly blocked by the sealing section 31 in the first joint 3. At this time, the liquid inlet hole 22, the gap on the inner wall side of the gap section 32 and the liquid outlet hole 23 are also blocked, so that the liquid can only be diverted downward from the flow channel 21 in the sliding sleeve 2. When the flow channel 21 is blocked by the destructible blocking ball 7, it is ensured that the upper section of the sliding sleeve 2 can quickly increase the liquid pressure.

[0066] In one embodiment, a plurality of liquid inlet holes 22 are provided in the side circumferential wall of the sliding sleeve 2 at intervals along the same circumferential direction; a plurality of liquid outlet holes 23 are provided in the side circumferential wall of the sliding sleeve 2 at intervals along the same circumferential direction.

[0067] Specific, combined Figure 1 and Figure 2 To further explain in detail, a plurality of liquid inlet holes 22 are arranged in the side circumferential wall of the sliding sleeve 2 along the same circumferential interval, and a plurality of liquid outlet holes 23 are arranged in the side circumferential wall of the sliding sleeve 2 along the same circumferential interval. In this way, the multiple liquid inlet holes 22, the gap on the inner wall side of the gap section 32 and the multiple liquid outlet holes 23 can form an efficient temporary flow channel, ensuring that the upper section flow channel 21 in the sliding sleeve 2 can effectively relieve pressure, thereby avoiding accidental squeezing and damage of the destructible plugging ball 7.

[0068] In one embodiment, the multi-activatable reamer further includes a second joint 5 ; the second joint 5 is fixedly sleeved on the peripheral wall of the sliding member 2 below the ball seat 4 , and the sliding member 2 can synchronously drive the second joint 5 to move and squeeze the trigger member 61 .

[0069] Specific, combined Figure 1 and Figure 2 To further explain in detail, the multi-activatable eye expander also includes a second joint 5 fixedly mounted on the lower section of the sliding sleeve 2, and the sliding sleeve 2 can synchronously drive the second joint 5 to move and squeeze the trigger member 61. In this way, on the one hand, the sliding sleeve 2 can cooperate with the second joint 5 to jointly squeeze and trigger the trigger member 61 in the eye reaming assembly 6; on the other hand, the second joint 5 can also abut and limit the sealing section 31 in the first joint 3, thereby limiting the rising and resetting position of the sliding sleeve 2 to avoid excessive rising and resetting of the sliding sleeve 2.

[0070] In one embodiment, the trigger member 61 is configured as a disc spring, and the tool member 62 is disposed on the outer periphery of the disc spring; when the disc spring is squeezed by the sliding sleeve 2 and the second joint 5, it can correspondingly drive the tool member 62 to expand outward.

[0071] The trigger member 61 is specifically configured as a disc spring and the tool member 62 is configured on the outer periphery of the disc spring. In this way, when subjected to the downward squeezing action of the sliding sleeve 2 and the second joint 5, the disc spring can cause the tool member 62 to expand outward to perform the eye expansion work. Moreover, the disc spring itself has a relatively high strength limit, yield limit, elastic limit and impact toughness, thereby being able to effectively maintain the morphological stability and reliability of the tool member 62 in expanding outward to expand the eye.

[0072] In one embodiment, the multi-activatable reamer further includes a hydraulic shift module 9; the hydraulic shift module 9 is correspondingly arranged below the reaming assembly 6, and is capable of adjusting the outward expansion amplitude of the tool member 62 under different hydraulic pressures, and the expansion amplitude of the tool member 62 adjusts the diameter expansion rate by 15%-35%.

[0073] Specific, combined Figure 4 To further explain in detail, the hydraulic shift module 9 is correspondingly arranged below the eye-reaming assembly 6. In this way, the liquid discharged from the lower section of the flow channel 21 in the sliding sleeve 2 will enter the hydraulic shift module 9. Then, the shift position of the hydraulic shift module 9 can be adjusted accordingly under the action of different hydraulic pressures, thereby realizing the function of adjusting the outward expansion amplitude of the tool part 62.

[0074] In one embodiment, the hydraulic shift module 9 includes a diverter baffle 91, a sliding body 92, a flow-blocking ball 93, a flow-blocking spring 94 and a shift baffle 95; the diverter baffle 91 is arranged corresponding to the flow channel 21 and can partially block the fluid; the sliding body 92 and the diverter baffle 91 are slidably arranged, and a liquid inlet gap 921 is formed between the bottom and the diverter baffle 91, and a liquid outlet gap 922 is opened above; the flow-blocking ball 93 is installed in the sliding body 92 through the flow-blocking spring 94, and can block the liquid inlet gap 921 under the elastic force of the flow-blocking spring 94; the shift baffle 95 is arranged at the liquid outlet gap 922 above the diverter baffle 91, and can squeeze the trigger part 61 upward under the action of hydraulic pressure to change the outward expansion amplitude of the tool part 62.

[0075] Specific, combined Figure 4 To further explain in detail, the hydraulic shift module 9 includes a diverter baffle 91, a sliding body 92, a flow-blocking ball 93, a flow-blocking spring 94 and a shift baffle 95. In this way, when the liquid discharged from the lower section of the flow channel 21 in the sliding sleeve 2 enters the hydraulic shift module 9, the liquid will act on the diverter baffle 91, and squeeze the flow-blocking ball 93 and the flow-blocking spring 94 through the liquid inlet gap 921, and then be discharged through the liquid outlet gap 922 above the diverter baffle 91, and impact the shift baffle 95 accordingly, causing the shift baffle 95 to move upward and squeeze the trigger member 61, so that the amplitude of the outward expansion of the tool member 62 can be further changed.

[0076] The specific configuration of the hydraulic shift module 9 has the beneficial effects of being simple in structure and being able to flexibly change the outward expansion range of the tool member 62 .

[0077] In one embodiment, multiple groups of choke balls 93 and choke springs 94 are provided on the sliding body 92 in a one-to-one correspondence along the height direction.

[0078] Specific, combined Figure 4 To further explain in detail, multiple groups of baffle balls 93 and baffle springs 94 are arranged one by one in the height direction of the sliding body 92, so that each group of baffle balls 93 and baffle springs 94 forms a corresponding shift position. The shift size of the hydraulic shift module 9 can be adjusted accordingly according to the size of the diversion hydraulic pressure borne by the diverter baffle 91, thereby further improving the shift effect of the hydraulic shift module 9 on the outward expansion range of the tool part 62.

[0079] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Throughout the present disclosure, "plurality" means two or more, unless otherwise specifically defined.

[0080] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A multi-activatable reamer, characterized in that: include: Ontology(1); A sliding sleeve (2) is slidably disposed in the body (1), and a flow channel (21) for liquid flow is formed in the sliding sleeve (2); A first joint (3) is fixedly arranged in the body (1), comprising a sealing section (31) sleeved on the outer periphery of the sliding sleeve (2), and a gap section (32) spaced around the outer periphery of the sliding sleeve (2); A ball seat (4) is fixedly disposed in the flow channel (21) and is provided with a ball seat opening (41) corresponding to the flow channel (21); A reaming assembly (6) comprising a trigger member (61) and a tool member (62) disposed below the sliding member (2), wherein the trigger member (61) is capable of causing the tool member (62) to expand outward under the squeezing action of the sliding member (2); A destructible plugging ball (7) is used to be deployed to block the ball seat opening (41) and increase the hydraulic pressure of the sliding member (2) above the ball seat (4) so as to move the sliding member (2) to squeeze the trigger member (61); The sliding member (2) is located on the upper and lower peripheral walls of the ball seat (4), and is provided with a liquid inlet hole (22) and a liquid outlet hole (23), respectively. When the sliding sleeve (2) squeezes the trigger member (61), the liquid inlet hole (22) and the liquid outlet hole (23) are respectively connected to the inner wall side gap of the gap section (32) to form a temporary flow channel; The multi-activatable eye reamer further includes a hole-blocking ball (8); The hole-blocking ball (8) is placed after the destructible blocking ball (7) blocks the ball seat opening (41), and can be used to block the liquid inlet hole (22) and further increase the hydraulic pressure of the sliding member (2) above the ball seat (4), so that the destructible blocking ball (7) ruptures and no longer blocks the ball seat opening (41); The multi-activatable reamer further includes a hydraulic shift module (9); The hydraulic shift module (9) is correspondingly arranged below the reaming assembly (6) and is capable of adjusting the magnitude of the outward expansion of the tool member (62) under different hydraulic pressures; The hydraulic shift module (9) comprises: a flow dividing baffle (91), arranged corresponding to the flow channel (21) and capable of partially blocking the fluid; A sliding body (92) is slidably arranged with the diverter baffle (91), and a liquid inlet gap (921) is formed between the sliding body and the diverter baffle (91) at the bottom, and a liquid outlet gap (922) is formed at the top; A flow-blocking ball (93) is installed in the sliding body (92) via a flow-blocking spring (94) and is capable of blocking the liquid inlet gap (921) under the elastic force of the flow-blocking spring (94); The shift baffle (95) is arranged at the liquid outlet gap (922) above the diversion baffle (91) and is capable of pressing the trigger member (61) upward under the action of hydraulic pressure to change the outward expansion amplitude of the tool member (62).

2. The multi-activatable reamer according to claim 1, wherein: It also includes an elastic reset component, and the elastic reset component is in transmission connection with the sliding sleeve (2); In the working condition where the destructible blocking ball (7) ruptures and no longer blocks the ball seat opening (41), the elastic reset component resets the sliding sleeve (2) away from the trigger member (61).

3. The multi-activatable reamer according to claim 2, wherein: The elastic reset assembly comprises: Elastic claws (24) are elastically connected to the top of the sliding sleeve (2) and the inner wall of the body (1), respectively; A compression spring (25) is elastically connected to the bottom end of the sliding sleeve (2) and the tool member (62) respectively; When the sliding member (2) moves toward the trigger member (61), the elastic claw (24) and the compression spring (25) respectively store elastic potential energy, and when the elastic claw (24) and the compression spring (25) release the elastic potential energy, the sliding member (2) can be moved away from the trigger member (61).

4. The multi-activatable reamer according to claim 2, wherein: When the sliding sleeve (2) moves away from the trigger member (61) and resets to the initial position, the sealing section (31) in the first joint (3) blocks the liquid inlet hole (22) accordingly.

5. The multi-activatable reamer according to claim 4, wherein: A plurality of liquid inlet holes (22) are provided in the side circumferential wall of the sliding sleeve (2) at intervals along the same circumferential direction; A plurality of the liquid outlet holes (23) are arranged in the side circumferential wall of the sliding sleeve (2) at intervals along the same circumferential direction.

6. The multi-activatable reamer according to claim 1, wherein: Also includes a second connector (5); The second joint (5) is fixedly sleeved on the peripheral wall of the sliding sleeve (2) below the ball seat (4), and the sliding sleeve (2) can synchronously drive the second joint (5) to move and squeeze the trigger member (61).

7. The multi-activatable reamer according to claim 6, wherein: The trigger member (61) is configured as a disc spring, and the tool member (62) is disposed on the outer periphery of the disc spring; When the disc spring is squeezed by the sliding sleeve (2) and the second joint (5), it can correspondingly drive the tool part (62) to expand outward.

8. The multi-activatable reamer according to claim 1, wherein: The flow-blocking balls (93) and the flow-blocking springs (94) are arranged in multiple groups in a one-to-one correspondence along the height direction of the sliding body (92).

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