External debugging layered blocking control matching tool

Abstract

The utility model relates to the technical field of oil field underground layered oil production allocation tools, in particular to an external debugging layered blocking control matching tool which comprises an upper connector, an upper central pipe, a lower central pipe, a plurality of sealing rings and a lower connector, the sealing rings are arranged between the upper connector and the upper central pipe, and the sealing rings are arranged between an adjusting sleeve and the upper connector so that the overall sealing performance can be enhanced. The lower end of the outer sleeve A is in threaded connection with the valve seat, and then the lower end of the valve seat is in threaded connection with the outer sleeve B. A plurality of temporary plugging mechanisms are arranged in the valve seat and the outer sleeve B. A shear pin is arranged in a through hole in the outer wall of the outer sleeve B to connect the outer sleeve B and the temporary plugging mechanisms. According to the external debugging layered blocking control matching tool, the functions of blocking and differential pressure control are achieved at the same time through the temporary blocking mechanism, the tool is convenient to operate and maintain due to the fact that all the components are connected in a threaded and clamping mode, the erosion resistance of the tool is further enhanced through the temporary blocking mechanism, underground blocking is conducted firstly, then control is conducted, and the working efficiency is improved. And efficient management of controlling without blocking is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of underground stratified oil production and production matching tools in oil fields, in particular to an external stratified oil production and production matching tool. Background Art

[0002] With the advancement of oilfield mining technology, especially the development of stratified oil production technology, the management of high flow pressure, high permeability and high aquifer has become increasingly important. At present, the externally debugged constant pressure distributor is a widely used mechanical water plugging tool. There are some problems with this tool in its application: the valve core, valve seat, gland ring and nut in the distributor are easily damaged after being flushed by high-pressure well fluid for a long time, which leads to the failure of the sealing performance of the entire equipment; once the constant pressure switch after going down the well is turned on, it will continue to be hit by high frequency. Due to the lack of temporary plugging and buffer devices, such impacts will shorten the validity period of the distributor, making it difficult to achieve the goal of precise control without clogging. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] The utility model provides an external debugging layered control and plugging matching tool to overcome the problems in the prior art that the sealing parts of the layered control and plugging tool are easily damaged, resulting in sealing failure, the effective period of the matching is short and it is impossible to achieve blocking first and then controlling, and controlling without plugging.

[0005] (II) Technical solution

[0006] To achieve the above purpose, the utility model provides an external debugging layered control plugging matching tool, comprising: an upper joint, an upper center pipe, a lower center pipe, a plurality of sealing rings and a lower joint;

[0007] The upper joint is arranged at the top, an upper central tube is arranged at the lower end of the upper joint, a lower central tube is arranged at the lower end of the upper central tube, a lower joint is arranged at the lower end of the lower central tube, and a sealing ring is arranged between the lower central tube and the upper central tube;

[0008] A sealing ring is provided between the upper joint and the upper center tube, an adjustment sleeve is sleeved on the upper joint and the outer wall of the upper center tube, a sealing ring is provided between the adjustment sleeve and the upper joint, a jacket A is sleeved on the outer wall of the adjustment sleeve, a sealing ring is provided between the adjustment sleeve and the jacket A, a spring is provided between the jacket A and the upper center tube, the spring is sleeved on the outer wall of the upper center tube, the lower end of the jacket A is threadedly connected to the valve seat, a sealing ring is provided between the valve seat and the jacket A, the lower end of the valve seat is threadedly connected to the jacket B, and the jacket B is threadedly connected to the lower joint;

[0009] The valve seat and the outer sleeve B are provided with a plurality of temporary blocking mechanisms, the inner wall of the valve seat is provided with a plurality of steps extending inwardly, the outer wall of the outer sleeve B is provided with a plurality of through holes, and the through holes are respectively provided with shear pins, and the shear pins connect the outer sleeve B and the temporary blocking mechanism.

[0010] Preferably, it also includes a gasket A and a gasket B. The upper end of the spring is provided with a gasket A, and the lower end of the spring is provided with a gasket B. The gasket A is clamped with the adjustment sleeve, and the gasket A and the gasket B limit the spring.

[0011] Preferably, the temporary plugging mechanism comprises: two polytetrafluoroethylene sealing rings, a pressure cap, a gasket, a plug, a valve stem, a faucet, a faucet sleeve, a spacer, a valve plug, a temporary plugging, a release sleeve, a fixed piston, a shear pin, a steel ball and a locking ring;

[0012] A pressure cap is provided at the lower end of the gasket ring B, a valve stem is provided in the valve seat, polytetrafluoroethylene sealing rings are provided at both ends of the valve stem, the lower end of the pressure cap is threadedly connected to the valve stem, the plug is threadedly connected to the inner wall of the valve seat, the plug is pressed by the pressure cap, and a gasket is provided between the pressure cap and the plug;

[0013] The lower end of the valve stem is threadedly connected to the water spout, and the lower end of the water spout is covered with a water spout sleeve. The lower end of the water spout sleeve is provided with a circular spacer, and the spacer is clamped with a step provided on the inner wall of the valve seat. A sealing ring is provided between the valve seat and the outer sleeve B, and a valve plug is provided at the lower end of the spacer. A sealing ring is provided between the valve plug and the upper center tube. The valve plug is composed of two hollow cylindrical structures. The inner diameter of the upper end of the valve plug is larger than the inner diameter of the lower end. A steel ball is provided in the hollow space at the upper end of the valve plug. A temporary plug is provided at the lower end of the valve plug. A release sleeve is provided at the lower end of the temporary plug, and the release sleeve is provided between the outer sleeve B and the lower center tube. The release sleeve presses against the temporary plug, and the release sleeve is fixedly connected to the outer sleeve B by shear nails. A fixed piston is provided between the release sleeve and the lower center tube, and the fixed piston is threadedly connected to the lower center tube, and a locking ring is provided at the lower end of the release sleeve.

[0014] Preferably, the outer wall of the upper joint is provided with laser scale, and the outer sleeve B is provided with a plurality of through holes matching the positions of the release sleeve.

[0015] Preferably, sealing rings are respectively provided between the release sleeve and the outer sleeve B and the lower center tube, and sealing rings are provided between the fixed piston and the lower center tube and the release sleeve.

[0016] Preferably, the outer diameter of the steel ball is larger than the inner diameter of the lower end of the valve plug, the steel ball can move in the hollow cylindrical structure of the upper end of the valve plug, and the steel ball can completely close the hollow cylindrical structure of the lower end of the valve plug.

[0017] Preferably, the temporary plugging is a soluble temporary plugging, and the temporary plugging dissolution time is 6 months.

[0018] Preferably, the inner wall of the upper center tube is provided with a plurality of through holes, which are arranged on one side of the valve stem in the temporary plugging mechanism. The through holes are sealed by polytetrafluoroethylene sealing rings respectively provided at both ends of the valve stem, and the number of the through holes matches the number of the temporary plugging mechanisms.

[0019] Preferably, the release sleeve 20 can move longitudinally between the outer sleeve B18 and the lower center tube 21 , and the inner wall of the lower end of the outer sleeve B18 is provided with an annular expansion structure, and the annular expansion structure matches the locking ring 24 .

[0020] Preferably, threads are respectively provided at the connection between the adjustment sleeve and the upper center tube, and the adjustment sleeve can rotate and move along the longitudinal direction of the upper center tube.

[0021] (III) Beneficial effects

[0022] The utility model provides an external debugging layered control and plugging matching tool, which can achieve the plugging effect by setting a temporary plugging mechanism, and at the same time, realize the oil casing pressure difference control through the same group of temporary plugging mechanisms after the plugging fails. By setting a plurality of sealing devices, the sealing of the whole tool is improved and the risk of leakage is reduced. The various parts of the tool are assembled and disassembled by means of threaded connection and clamping, which is convenient for the operation and maintenance of the tool so that the tool can adapt to a variety of environments. The temporary plugging mechanism is used to improve the tool's anti-erosion ability and reduce high-frequency impact, and at the same time, the purpose of plugging first and then controlling the wellbore is achieved through a single tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of an external debugging layered control plugging matching tool of the utility model is shown;

[0024] Figure 2 Show Figure 1 Partial schematic diagram of structure A in the middle.

[0025] Wherein: 1: upper joint; 2: adjustment sleeve; 3: outer sleeve A; 4: gasket A; 5: spring; 6: upper center tube; 7: gasket B; 8: pressure cap; 9: gasket; 10: plug; 11: valve stem; 12: valve seat; 13: polytetrafluoroethylene sealing ring; 14: faucet; 15: faucet sleeve; 16: diaphragm; 17: valve plug; 18: outer sleeve B; 19: temporary plug; 20: release sleeve; 21: lower center tube; 22: fixed piston; 23: shear pin; 24: locking ring; 25: lower joint; 26: sealing ring; 27: steel ball. DETAILED DESCRIPTION

[0026] The utility model is described in detail below with reference to the accompanying drawings and embodiments.

[0027] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by "up", "down", "left", "right", "inside", "outside", "top" and "bottom" are all based on the directions or positional relationships shown in the accompanying drawings. The purpose is only to facilitate the description of the present invention and simplify the description. It does not indicate or imply that the referred parts must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0028] like Figure 1-2 As shown, the utility model provides an external debugging layered control plugging matching tool, comprising: an upper joint 1, an upper center pipe 6, a lower center pipe 21, a plurality of sealing rings 26 and a lower joint 25;

[0029] The upper joint 1 is located at the top of the entire tool to facilitate connection with other equipment. The lower end of the upper joint 1 is connected to the upper center pipe 6 through a thread, and the lower end of the upper center pipe 6 is connected to the lower center pipe 21 and the lower joint 25 through a thread in turn to form a continuous channel.

[0030] A sealing ring 26 is provided at the connection between the upper joint 1 and the upper center tube 6 to ensure the sealing of the connection. An adjustment sleeve 2 is sleeved on the outer wall of the upper joint 1 and the upper center tube 6. A sealing ring 26 is provided between the adjustment sleeve 2 and the upper joint 1 to ensure that the adjustment sleeve 2 does not leak when moving up and down. A jacket A3 is sleeved on the outer wall of the adjustment sleeve 2. A spring 5 is provided between the jacket A3 and the upper center tube 6. The spring 5 is sleeved on the outer wall of the upper center tube 6. A laser scale is provided on the outer wall of the upper joint 1. The laser scale is etched on the outer surface of the upper joint 1. The laser scale can be used as a reference point to help operators determine the position of the upper joint 1 or a tool connected thereto.

[0031] The lower end of the outer sleeve A3 is connected to the valve seat 12 through a thread, and a sealing ring 26 is provided between the valve seat 12 and the outer sleeve A3 to ensure the seal between the two. The lower end of the valve seat 12 is connected to the outer sleeve B18 through a thread, and the outer sleeve B18 is threadedly connected to the lower joint 25. The valve seat 12 and the outer sleeve B18 are circumferentially arranged with a plurality of temporary blocking mechanisms. The inner wall of the valve seat 12 is provided with a plurality of steps extending inwardly for accommodating the temporary blocking mechanisms. The outer wall of the outer sleeve B18 is provided with a plurality of through holes, and shear nails 23 are respectively provided in the through holes. These shear nails 23 connect the outer sleeve B18 with the temporary blocking mechanism.

[0032] The inner wall of the upper central tube 6 is provided with a plurality of through holes, which are located on one side of the valve stem 11 in the temporary plugging mechanism. The through holes are sealed by polytetrafluoroethylene sealing rings 13 respectively provided at both ends of the valve stem 11. The polytetrafluoroethylene sealing rings 13 ensure the sealing of the through holes to prevent the fluid from leaking out of the through holes. Polytetrafluoroethylene has good corrosion resistance and high pressure resistance. The polytetrafluoroethylene sealing ring 13 can also withstand a wide temperature range and maintain good sealing performance from extremely low temperature to extremely high temperature, which enables it to work effectively in various complex underground environments. The number of the through holes matches the number of the temporary plugging mechanisms to ensure that each temporary plugging mechanism can work independently.

[0033] A gasket A4 is provided at the upper end of the spring 5, and a gasket B7 is provided at the lower end of the spring 5. The gasket A4 is clamped in the adjustment sleeve 2, and the gasket B7 plays a supporting role. The gasket A4 and the gasket B7 limit the position of the spring 5. The connection between the adjustment sleeve 2 and the upper center pipe 6 is respectively provided with threads, so that the adjustment sleeve 2 can rotate and move longitudinally along the upper center pipe 6, thereby adjusting the working state of the packer.

[0034] The temporary plugging mechanism includes: two polytetrafluoroethylene sealing rings 13, a pressure cap 8, a gasket 9, a plug 10, a valve stem 11, a faucet 14, a faucet sleeve 15, a spacer 16, a valve plug 17, a soluble temporary plug 19, a release sleeve 20, a fixed piston 22, a shear pin 23, a steel ball 27 and a lock ring 24;

[0035] A pressure cap 8 is provided at the lower end of the gasket B7, and the pressure cap 8 is used to fix the plug 10. A valve stem 11 is provided in the valve seat 12, and polytetrafluoroethylene sealing rings 13 are provided at both ends of the valve stem 11. The lower end of the pressure cap 8 is connected to the valve stem 11 through a thread, and the plug 10 is connected to the valve seat 12 through a thread. The plug 10 is tightly pressed by the pressure cap 8, and a gasket 9 is provided between the pressure cap 8 and the plug 10. The gasket 9 is used to enhance the sealing effect and prevent the fluid from leaking from the gap between the pressure cap 8 and the plug 10;

[0036] The lower end of the valve stem 11 is connected to the water nozzle 14 through a thread. The lower end of the water nozzle 14 is covered with a water nozzle sleeve 15. The function of the water nozzle sleeve 15 is to reduce the pressure of the liquid flowing through. A circular ring-shaped spacer 16 is provided at the lower end of the water nozzle sleeve 15. The spacer 16 is clamped with a step provided on the inner wall of the valve seat 12. The spacer 16 plays a role of supporting and establishing a seal to prevent liquid leakage. A valve plug 17 is provided at the lower end of the spacer 16. A sealing ring 26 is provided between the valve plug 17 and the upper center tube 6. The valve plug 17 consists of two hollow cylindrical structures. The inner diameter of the upper end of the valve plug 17 is larger than the inner diameter of the lower end. A steel ball 27 is provided in the hollow space at the upper end of the valve plug 17. A temporary plug 19 is provided at the lower end of the temporary plug 19. A release sleeve 20 is provided at the lower end of the release sleeve 20. The release sleeve 20 is arranged between the outer sleeve B18 and the lower center tube 21, the release sleeve 20 presses against the temporary plug 19, and the release sleeve 20 is fixedly connected to the outer sleeve B18 through the shear nails 23. A fixed piston 22 is arranged between the release sleeve 20 and the lower center tube 21, and the fixed piston 22 is threadedly connected to the lower center tube 21. The lower end of the release sleeve 20 is sleeved with a locking ring 24. The release sleeve 20 is arranged below the temporary plug 19. The release sleeve 20 is used to control the release of the temporary plug 19 and maintain the position by pressing against the temporary plug 19. The outer sleeve B18 is a hollow cylindrical structure, and the inner wall of the lower end of the outer sleeve B18 is provided with an annular expansion structure. The annular expansion structure provides a larger space than other parts to facilitate the positioning of the locking ring 24 provided at the lower end of the release sleeve 20;

[0037] The outer sleeve B18 is provided with a plurality of through holes matching the positions of the release sleeve 20. A sealing ring 26 is respectively provided between the release sleeve 20 and the outer sleeve B18 and the lower center tube 21. A sealing ring 26 is provided between the fixed piston 22 and the lower center tube 21. The outer diameter of the steel ball 27 is larger than the inner diameter of the lower end of the valve plug 17. The steel ball 27 can move in the hollow cylindrical structure at the upper end of the valve plug 17. The steel ball 27 can completely close the hollow cylindrical structure at the lower end of the valve plug 17. The temporary plug 19 is a soluble temporary plug. The temporary plug 19 dissolves for 6 months to achieve first plugging and then control.

[0038] The temporary blocking mechanism is controlled by the adjusting sleeve 2 , and the compression distance of the spring 5 is adjusted by rotating the adjusting sleeve 2 , and the compression distance is based on the laser scale provided on the outer wall of the upper joint 1 .

[0039] Since the downhole casing may be deformed during oil field development, the conventional φ114mm production distributor cannot be used. Therefore, the external debugging and stratification control and plugging matching tool reduces the outer diameter of the conventional production distributor from φ114mm to φ100mm. This optimization makes the tool more compact and flexible, able to adapt to smaller casing diameters, and the diameter of the center channel remains φ30mm, which meets the passage of magnetic positioning tools during operation and construction.

[0040] The following is a detailed introduction to the actual working scenario of an external debugging layered congestion control supporting tool.

[0041] In actual work, it is necessary to set the opening pressure value according to the difference between the current formation pressure and the flow pressure of the single well, rotate the adjustment sleeve 2 in the positive direction, and adjust the compression distance of the spring 5 through the thread on the upper central pipe 6 until the laser scale provided on the outer wall of the upper joint 1 can be seen. The external debugging layered control and plugging matching tool is connected to the oil pipe through the upper joint 1 and lowered into the production-limiting layer section along the pipe string. The external debugging layered control and plugging matching tool limits the production of the high flow pressure layer;

[0042] When the packer is released by pressurizing the oil pipe, the pressure difference is greater than 5MPa, and the shear nails 23 in the external debugging layer control plugging supporting tool are cut off under the action of pressure, pushing the release sleeve 20 downward, and when the release sleeve 20 moves to the annular expansion structure provided at the lower end of the inner wall of the outer sleeve B18, the locking ring 24 provided at the lower end of the release sleeve 20 expands outward to clamp the release sleeve 20 on the inner wall of the outer sleeve B18, and the through hole provided on the outer wall of the outer sleeve B18 is opened, and the well fluid enters the annular space formed by the outer sleeve B18 and the lower center pipe 21. The temporary plug 19 contacts the well fluid and begins to dissolve slowly. The dissolution time of the temporary plug 19 is 6 months. Within 6 months, this layer is equivalent to the plugging effect and does not allow liquid to pass through. After 6 months, the temporary plug 19 dissolves Solution: when the oil-casing pressure difference is greater than the opening pressure, with the compression and release of the spring 5, the valve stem 11 and the valve plug 17 work together to control the flow of the liquid, and the incoming liquid pushes open the steel ball 27 provided at the upper end of the valve plug 17, passes through the diaphragm 16 and then reduces the pressure of the well fluid through the water nozzle sleeve 15, and the well fluid slowly pushes the valve stem 11 upward to compress the spring 5. When the polytetrafluoroethylene sealing ring 13 provided at the lower end of the valve stem 11 moves to above the through hole provided on the inner wall of the upper center pipe 6, the well fluid flows through the through hole into the upper center pipe 6, and this layer is normally produced. When the oil-casing pressure difference is less than the opening pressure, the spring 5 pushes the valve stem 11, and the steel ball 27 slowly approaches the valve plug 17 to play a buffering role until the valve plug 17 is closed.

[0043] It can be understood that the above-mentioned various embodiments mentioned in the present invention can be combined with each other to form a combined embodiment without violating the principle logic. Due to space limitations, the present invention will not elaborate on them.

[0044] Those skilled in the art will appreciate that, in the above method of specific implementation, the order in which the steps are written does not imply a strict execution order and does not constitute any limitation on the implementation process. The specific execution order of the steps should be determined by their functions and possible internal logic.

[0045] The utility model provides an external debugging layered control and plugging matching tool which realizes the plugging effect by setting a temporary plugging mechanism, and satisfies the need to control the oil casing pressure difference through the same group of temporary plugging mechanisms after the plugging fails. The sealing performance of the entire tool is improved by setting a plurality of sealing devices, and the risk of leakage is reduced. The various parts of the tool are assembled and disassembled by means of threaded connection and clamping, which facilitates the operation and maintenance of the tool so that the tool can adapt to a variety of environments, improves the erosion resistance and reduces high-frequency impact, and realizes the purpose of plugging first and then controlling in the well, and controlling without plugging.

[0046] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. An external debugging layered control and plugging matching tool, characterized in that: include: An upper joint (1), an upper center tube (6), a lower center tube (21), a plurality of sealing rings (26), and a lower joint (25); The upper joint (1) is arranged at the top end, an upper central tube (6) is arranged at the lower end of the upper joint (1), a lower central tube (21) is arranged at the lower end of the upper central tube (6), a lower joint (25) is arranged at the lower end of the lower central tube (21), and a sealing ring (26) is arranged between the lower central tube (21) and the upper central tube (6); A sealing ring (26) is provided between the upper joint (1) and the upper center tube (6); an adjustment sleeve (2) is sleeved on the outer wall of the upper joint (1) and the upper center tube (6); a sealing ring (26) is provided between the adjustment sleeve (2) and the upper joint (1); an outer sleeve A (3) is sleeved on the outer wall of the adjustment sleeve (2); a sealing ring (26) is provided between the adjustment sleeve (2) and the outer sleeve A (3); a spring (5) is provided between the outer sleeve A (3) and the upper center tube (6); the spring (5) is sleeved on the outer wall of the upper center tube (6); the lower end of the outer sleeve A (3) is threadedly connected to the valve seat (12); a sealing ring (26) is provided between the valve seat (12) and the outer sleeve A (3); the lower end of the valve seat (12) is threadedly connected to the outer sleeve B (18); the outer sleeve B (18) is threadedly connected to the lower joint (25); A plurality of temporary blocking mechanisms are provided inside the valve seat (12) and the outer sleeve B (18); the inner wall of the valve seat (12) is provided with a plurality of steps extending inwardly; the outer wall of the outer sleeve B (18) is provided with a plurality of through holes; shear pins (23) are respectively provided in the through holes; the shear pins (23) connect the outer sleeve B (18) and the temporary blocking mechanism.

2. The external debugging layer control and plugging matching tool according to claim 1 is characterized in that: It also includes a gasket A (4) and a gasket B (7). The upper end of the spring (5) is provided with a gasket A (4), and the lower end of the spring (5) is provided with a gasket B (7). The gasket A (4) is clamped with the adjustment sleeve (2), and the gasket A (4) and the gasket B (7) limit the spring (5).

3. The external debugging layer control and plugging matching tool according to claim 2 is characterized in that: The temporary plugging mechanism comprises: two polytetrafluoroethylene sealing rings (13), a pressure cap (8), a gasket (9), a plug (10), a valve stem (11), a faucet (14), a faucet sleeve (15), a spacer (16), a valve plug (17), a temporary plug (19), a release sleeve (20), a fixed piston (22), a shear pin (23), a steel ball (27) and a lock ring (24); A pressing cap (8) is provided at the lower end of the gasket ring B (7), a valve stem (11) is provided in the valve seat (12), polytetrafluoroethylene sealing rings (13) are provided at both ends of the valve stem (11), the lower end of the pressing cap (8) is threadedly connected to the valve stem (11), the plug (10) is threadedly connected to the inner wall of the valve seat (12), the plug (10) is pressed by the pressing cap (8), and a gasket (9) is provided between the pressing cap (8) and the plug (10); The lower end of the valve stem (11) is threadedly connected to a water nozzle (14), and the lower end of the water nozzle (14) is covered with a water nozzle sleeve (15). The lower end of the water nozzle sleeve (15) is provided with a circular spacer (16), and the spacer (16) is clamped with a step provided on the inner wall of the valve seat (12). A sealing ring (26) is provided between the valve seat (12) and the outer sleeve B (18). A valve plug (17) is provided at the lower end of the spacer (16), and a sealing ring (26) is provided between the valve plug (17) and the upper center tube (6). The valve plug (17) is composed of two hollow cylindrical structures. The inner diameter of the upper end of the valve plug (17) is larger than the inner diameter of the lower end. 7) A steel ball (27) is provided in the hollow space at the upper end, a temporary plug (19) is provided at the lower end of the valve plug (17), a release sleeve (20) is provided at the lower end of the temporary plug (19), the release sleeve (20) is provided between the outer sleeve B (18) and the lower center tube (21), the release sleeve (20) presses against the temporary plug (19), the release sleeve (20) is fixedly connected to the outer sleeve B (18) by shear nails (23), a fixed piston (22) is provided between the release sleeve (20) and the lower center tube (21), the fixed piston (22) is threadedly connected to the lower center tube (21), and a locking ring (24) is provided at the lower end of the release sleeve (20).

4. The external debugging layer control and plugging matching tool according to claim 3 is characterized in that: The outer wall of the upper joint (1) is provided with laser markings, and the outer sleeve B (18) is provided with a plurality of through holes matching the positions of the release sleeve (20).

5. The external debugging layer control and plugging matching tool according to claim 3 is characterized in that: Sealing rings (26) are respectively provided between the release sleeve (20), the outer sleeve B (18) and the lower center tube (21), and sealing rings (26) are provided between the fixed piston (22), the lower center tube (21) and the release sleeve (20).

6. The external debugging layer control and plugging matching tool according to claim 3 is characterized in that: The outer diameter of the steel ball (27) is larger than the inner diameter of the lower end of the valve plug (17); the steel ball (27) can move in the hollow cylindrical structure at the upper end of the valve plug (17); and the steel ball (27) can completely seal the hollow cylindrical structure at the lower end of the valve plug (17).

7. The external debugging layer control and plugging matching tool according to claim 3 is characterized in that: The temporary plugging (19) is a soluble temporary plugging, and the temporary plugging (19) dissolving time is 6 months.

8. The external debugging layer control and plugging matching tool according to claim 3 is characterized in that: The inner wall of the upper central tube (6) is provided with a plurality of through holes, the through holes being provided on one side of the valve stem (11) in the temporary plugging mechanism, the through holes being sealed by polytetrafluoroethylene sealing rings (13) provided at both ends of the valve stem (11), and the number of the through holes matches the number of the temporary plugging mechanisms.

9. The external debugging layer control and plugging matching tool according to claim 3 is characterized in that: The release sleeve (20) can move longitudinally between the outer sleeve B (18) and the lower center tube (21), and the inner wall of the lower end of the outer sleeve B (18) is provided with an annular diameter expansion structure, and the annular diameter expansion structure matches the locking ring (24).

10. The external debugging layer control and plugging matching tool according to claim 1 is characterized in that: The connection between the adjustment sleeve (2) and the upper center tube (6) is respectively provided with a thread, and the adjustment sleeve (2) can rotate and move along the longitudinal direction of the upper center tube (6).

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