High-temperature and high-pressure bridge plug slip anchoring performance rapid detection device

Abstract

The invention discloses a high-temperature and high-pressure bridge plug slip anchoring performance rapid detection device, which belongs to the field of oil and gas field mechanical bridge plug anchoring slip performance detection, and comprises an upper joint, a piston, a cone, an adjusting ring, a sleeve, a central pipe and a reducer union, the upper connector and the sleeve are coaxially connected to the two ends of the reducer union. The piston is slidably connected into the upper connector. The cone, the adjusting ring and the central pipe are all located in the sleeve, and the adjusting ring is connected to the outer side of the lower end of the central pipe and connected with the pin penetrating through the sleeve to detect slippage of the slip. The cone is slidably connected to the outer side of the upper end of the center pipe, one end of the cone is connected with the end face of the piston, and the slip is sleeved on the center pipe between the cone and the adjusting ring. Hydraulic pressure is converted into mechanical thrust, so that a bridge plug slip anchoring system is loaded, bridge plug anchoring performance detection is achieved, and the bridge plug slip performance detection device is simple in structure, low in cost, convenient to disassemble and assemble and suitable for multiple times of rapid detection of various types and specifications of slips.

Description

Technical Field

[0001] The invention relates to the field of oil and gas field mechanical bridge plug anchoring slip performance detection, and in particular to a high-temperature and high-pressure bridge plug slip anchoring performance rapid detection device. Background Art

[0002] As an important downhole tool in oil and gas fields, bridge plugs are mainly used for temporary and permanent plugging of oil, gas and water layers. Specifically, they can be used in production well plugging, water plugging, fracturing, acidizing, testing and other construction. The bridge plug has a compact structure, a small outer diameter, is easy to drill out, and is suitable for casings of various specifications. It is also easy to maintain and has been widely used in oil fields at home and abroad.

[0003] The slip anchoring system of the bridge plug plays the role of locking the rubber barrel and supporting the bridge plug when the pipe is set. The performance of the slip directly affects the setting force and anchoring effect of the bridge plug. Therefore, the slip performance test is particularly critical. For the evaluation of the stable anchoring performance of the slip of the bridge plug with a pressure resistance of 70MPa, it is usually evaluated and tested by a small-tonnage tension and press machine with a capacity of less than 1000KN. As my country advances into the exploration and development of oil and gas resources in deep areas, the demand for bridge plugs and similar packers with a pressure resistance of 105MPa or even higher is also proposed. In the development process of these downhole tools with slips, it is necessary to provide a tension and press machine with larger working parameters. Taking the bridge plug with a temperature resistance of 177℃ and a pressure resistance of 105MPa suitable for 140 steel grade casing as an example, the pressure required to provide in the slip detection process exceeds 2000KN. If the supporting professional slip anchoring force detection equipment is expensive, it is also necessary to invest in equipment maintenance costs. The existing bridge plug detection device is generally a simulated bridge plug prototype. It is necessary to detect the anchoring of the slip and the sealing of the bridge plug rubber tube. The detection target is not strong and is interfered by many factors of the prototype. The cost of the prototype provided by the detection is high. At the same time, the limit anchoring condition of the slip in the casing is reversed based on loading or pressurizing until the slip anchor fails. The displacement of the slip at a certain loading value cannot be accurately determined. Therefore, it is urgent to develop a quick detection method that can provide high loading force but is low in price, can be used repeatedly, and has low cost.

[0004] In the prior art, the invention patent application with publication number CN113155371A and publication date July 23, 2021, entitled "A soluble bridge plug anchoring and sealing performance testing tool and its use method", discloses the following technical scheme: A soluble bridge plug anchoring and sealing performance testing tool and its use method comprises a cylinder sleeve and a connecting plug one and a connecting plug two arranged at the left and right ends of the cylinder sleeve, a piston and a piston rod connected to the piston rod are arranged in the cylinder sleeve, the piston rod extends out of the cylinder sleeve through the connecting plug one, the piston rod extends out of the cylinder sleeve and is connected to a connecting sleeve, the connecting sleeve is connected to a soluble bridge plug to be tested, a sleeve is arranged on the outer sleeve of the soluble bridge plug to be tested, and the right end of the sleeve abuts against the outer side of the left end of the connecting plug one.

[0005] The detection prototype of the above patent simulates the actual transfer of the tool, and the complete machine must be used for the detection test, which makes it more expensive. In addition, its detection purpose is to detect the maximum compressive resistance that the cava can anchor by extreme pressure until the cava slips. Therefore, the test target value is also uncertain. In view of the high cost of the patent and its inapplicability to the detection of cava performance, this scheme proposes a high-temperature and high-pressure bridge plug cava anchoring performance rapid detection device. Summary of the invention

[0006] The present invention aims to overcome the problem that conventional detection methods lead to high costs for supporting test equipment by simply increasing force loading, and provides a bridge plug slip anchoring performance detection device which has a simple structure, low cost, and is easy to disassemble and assemble, and is suitable for multiple rapid detections of slips of various types and specifications.

[0007] In order to achieve the above-mentioned object of the invention, the technical solution of the present invention is as follows: A high-temperature and high-pressure bridge plug slip anchoring performance rapid detection device, comprising an upper joint, a piston, a cone, an adjustment ring, a sleeve, a center tube and a reducer; the upper joint and the sleeve are coaxially connected at both ends of the reducer; the piston is slidably connected in the upper joint; the cone, the adjustment ring and the center tube are all located inside the sleeve, the adjustment ring is connected to the outer side of the lower end of the center tube, and is connected to a pin passing through the sleeve to check the slip of the slip; the cone is slidably connected to the outer side of the upper end of the center tube, one end of which is connected to the end face of the piston, and the slip is sleeved on the center tube between the cone and the adjustment ring.

[0008] Furthermore, in a certain embodiment, an end surface of one end of the piston and an inner end surface of the upper joint form a closed cavity, and the piston is pushed to move by applying pressure to the closed cavity from the outside.

[0009] Furthermore, in a certain embodiment, the cone is a through hollow structure, one end of which is connected to the end face of the piston away from the upper joint, and the shape matches the end face of the piston.

[0010] Furthermore, in a certain embodiment, one end of the upper joint connected to the piston is connected to the inside of the upper end of the reducer, and the external thread of the upper joint cooperates with the internal thread of the upper end of the reducer to achieve connection.

[0011] Furthermore, in a certain embodiment, the sleeve is connected to the interior of the lower end of the reducer, and the internal thread of the lower end of the reducer cooperates with the external thread of the upper end of the sleeve to achieve connection.

[0012] Furthermore, in a certain embodiment, a conical slope adapted to the shape of the slip is provided on the outer wall where the cone contacts the slip.

[0013] Furthermore, in a certain embodiment, a threaded through hole is provided at the center of the end surface of the upper joint away from the piston, and the threaded through hole is connected to the sealed cavity formed between the piston and the upper joint, and the piston is pushed to move in the upper joint by pressing through the threaded hole.

[0014] Furthermore, in a certain embodiment, an O-ring is provided on the contact surface between the upper joint and the piston.

[0015] Furthermore, in a certain embodiment, the center tube is a stepped columnar body that is wider at the bottom and narrower at the top; the adjustment ring is connected to the outer cylindrical surface of the center tube with a larger diameter; the outer thread at the lower end of the center tube cooperates with the inner thread of the adjustment ring to achieve connection; an annular groove is provided on the outer cylindrical surface of the adjustment ring, and a through hole is provided on the casing corresponding to the position of the annular groove; the shear pin is placed in the annular groove through the through hole on the casing.

[0016] In summary, the present invention has the following advantages: 1. The present invention can convert hydraulic pressure into mechanical thrust, thereby adding load to the bridge plug slip anchoring system and detecting whether the bridge plug slip is well anchored; it has a simple structure, low cost, and is easy to disassemble and assemble, and is suitable for multiple rapid detections of slips of various types and specifications.

[0017] 2. The present invention installs a shear pin at the lower part of the casing to connect it with the adjusting washer on the center pipe, and can accurately detect whether the slip is displaced under a predetermined pressure value through the indentation and deformation of the pin; 3. The structural design of the present invention can realize rapid and repeated disassembly and assembly, and realize multiple tests on the anchoring of bridge plug slips; it has simple structure, low cost, convenient operation and strong versatility; 4. The present invention can satisfy the anchoring performance test of bridge plugs of different sizes by replacing simulation casings of different sizes; 5. The test sample of the present invention does not need to be a complete prototype, and can only simulate the slip anchoring process, so the test target is more accurate and the test cost is lower; 6. The entire prototype of the present invention considers one seal at the pressing point, and the sealing of the tooling in other places does not need to be considered. The structure is simpler, more efficient and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural principle diagram of the detection device of the present invention; In the figure: 1. Upper joint, 2. O-ring, 3. Reducer, 4. Piston, 5. Sleeve, 6. Cone, 7. Slip, 8. Adjusting ring, 9. Shear pin, 10. Center pipe. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0022] In the description of the present invention, it should be noted that the terms "upper", "vertical", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Example 1 Usually, in order to achieve bidirectional stable anchoring of the bridge plug, that is, the bridge plug will not be displaced downward when the upper end of the bridge plug is pressed, and the bridge plug will not be displaced upward when the formation pressure at the lower end of the bridge plug pushes up (once there is movement, the upper and lower squeezing forces of the rubber sleeve will be released, and eventually the rubber sleeve will shrink and the seal of the bridge plug will fail), the bridge plug is designed with slips 7 with opposite tooth directions at the upper and lower ends of the rubber sleeve. In this way, when pressed from top to bottom, the lower slip 7 can withstand the force to ensure the downward displacement of the bridge plug, and vice versa, the upper slip 7 will take effect when pressed.

[0025] In order to overcome the problem of high cost of supporting test equipment caused by conventional detection methods by simply increasing force loading, and to overcome the disadvantage that some existing hydraulic conduction detection tools must use complete machines for detection tests, the present invention provides a high-temperature and high-pressure bridge plug slip anchoring performance rapid detection device, which has a simple structure, low cost, and is easy to disassemble and assemble, and is suitable for multiple rapid detection of slips of various types and specifications.

[0026] like Figure 1 As shown, the detection device in this embodiment includes components such as an upper joint 1, a piston 4, a cone 6, an adjustment ring 8, a sleeve 5, a reducer 3, and a center tube 10.

[0027] The upper joint 1 is coaxially connected to the two ends of a reducer 3 with the sleeve 5. The piston 4 is slidably connected in the upper joint 1; the cone 6, the adjustment ring 8, and the center tube 10 are all located inside the sleeve 5, the adjustment ring 8 is connected to the outer side of the lower end of the center tube 10, and is connected to the pin passing through the sleeve 5 to check the slip of the slip 7; the cone 6 is slidably connected to the outer side of the upper end of the center tube 10, one end of which is connected to the end face of the piston 4, and the slip 7 is sleeved on the center tube 10 between the cone 6 and the adjustment ring 8.

[0028] The upper joint 1 is provided with an inner cavity with an opening at one end, and the piston 4 is slidably connected in the inner cavity of the upper joint 1, and its central axis coincides with the central axis of the upper joint 1. The end face of one end of the piston 4 and the inner end face of the upper joint 1 form a closed cavity, and the piston 4 can be pushed to move by external pressure. In this embodiment, an O-ring 2 is provided on the contact surface where the upper joint 1 and the piston 4 are connected, and the O-ring 2 makes the connecting end face of the piston 4 and the end face inside the upper joint 1 form a sealed cavity. A threaded through hole is provided in the center of the end face of the upper joint 1 away from the piston 4, and the threaded through hole is connected to the sealed cavity formed between the piston 4 and the upper joint 1. Pressing through the threaded hole can push the piston 4 to move in the upper joint 1, and the pressure can be accurately opened and controlled. By increasing the pressure, the corresponding thrust will also increase. In this embodiment, the threaded through hole is a 1 / 4" NPT threaded hole.

[0029] As the piston 4 moves under pressure, the cone 6 connected thereto also slides along the outer wall of the center tube 10, thereby squeezing the slip 7 between the cone 6 and the adjusting ring 8. Since the adjusting ring 8 is connected to the pin passing through the sleeve 5, whether the slip 7 has slipped can be detected by the deformation of the shear pin 9.

[0030] Example 2 The present embodiment provides a high-temperature and high-pressure bridge plug slip anchoring performance rapid detection device, including an upper joint 1, a piston 4, a cone 6, an adjustment ring 8, a sleeve 5, a reducer 3, a center pipe 10 and other components.

[0031] The upper joint 1 is coaxially connected to the two ends of a reducer 3 with the sleeve 5. The piston 4 is slidably connected in the upper joint 1; the cone 6, the adjusting ring 8, and the center tube 10 are all located inside the sleeve 5, the adjusting ring 8 is connected to the outer side of the lower end of the center tube 10, and is connected to the shear pin 9 passing through the sleeve 5 to check the slip of the slip 7; the cone 6 is slidably connected to the outer side of the upper end of the center tube 10, one end of which is connected to the end face of the piston 4, and the slip 7 is sleeved on the center tube 10 between the cone 6 and the adjusting ring 8.

[0032] On the basis of Example 1, further, in this embodiment, one end of the upper joint 1 connected to the piston 4 is connected to the inside of the upper end of the reducer 3, and the external thread of the upper joint 1 cooperates with the internal thread of the upper end of the reducer 3 to achieve connection. The sleeve 5 is connected to the inside of the lower end of the reducer 3, and the internal thread of the lower end of the reducer 3 cooperates with the external thread of the upper end of the sleeve 5 to achieve connection. The reducer 3 is simple and easy to obtain as a connection structure, easy to disassemble and assemble, and at the same time ensures the coaxiality of the connection between the upper joint 1 and the sleeve 5.

[0033] Example 3 The present embodiment provides a high-temperature and high-pressure bridge plug slip anchoring performance rapid detection device, including an upper joint 1, a piston 4, a cone 6, an adjustment ring 8, a sleeve 5, a reducer 3, a center pipe 10 and other components.

[0034] The upper joint 1 is coaxially connected to the two ends of a reducer 3 with the sleeve 5. The piston 4 is slidably connected in the upper joint 1; the cone 6, the adjusting ring 8, and the center tube 10 are all located inside the sleeve 5, the adjusting ring 8 is connected to the outer side of the lower end of the center tube 10, and is connected to the shear pin 9 passing through the sleeve 5 to check the slip of the slip 7; the cone 6 is slidably connected to the outer side of the upper end of the center tube 10, one end of which is connected to the end face of the piston 4, and the slip 7 is sleeved on the center tube 10 between the cone 6 and the adjusting ring 8.

[0035] On the basis of Example 1, further, in this embodiment, the center tube 10 is a stepped columnar body that is wider at the bottom and narrower at the top, including a large diameter cylinder and a small diameter cylinder coaxially connected, and the adjustment ring 8 is connected to the outer circumferential surface of the large diameter cylinder of the center tube 10, and the external thread at the lower end of the center tube 10 cooperates with the internal thread of the adjustment ring 8 to achieve connection.

[0036] An annular groove is arranged on the outer circumferential surface of the adjusting ring 8, a perforation is arranged on the sleeve 5 at a position corresponding to the annular groove, and the shear pin 9 is placed in the annular groove through the perforation on the sleeve 5, and the slip of the slip 7 can be checked by the indentation and deformation of the pin. The present invention can accurately observe the displacement of the slip 7 under the preset pressure value condition by presetting the pin shear value, and the number of the pins can be designed according to the actual bearing force, and is generally designed to be two symmetrical pins.

[0037] The cone 6 is slidably connected to the upper end of the center tube 10, that is, the outer cylindrical surface with a smaller diameter. The slip 7 is arranged between the cone 6 and the adjustment ring 8, and is also sleeved on the outer wall of the center tube 10, and one end face thereof abuts against the step end face of the center tube 10. The cone 6 is a hollow structure with two ends passing through, and one end thereof is connected to the end face of the piston 4 away from the upper joint 1, and the shape matches the end face of the piston 4. The other end of the cone 6, that is, the outer wall at the contact point with the slip 7 is provided with a conical inclined surface adapted to the shape of the slip 7. The cone 6 is located on the inner side of the slip 7, and its conical inclined surface is in contact with the wedge surface of the slip 7. Under the push of the piston 4, as the cone 6 moves downward, the slip 7 is gradually sealed on the sleeve 5, and the performance of the slip 7 is tested by whether the slip 7 slips.

[0038] The assembly sequence of the detection device mentioned in the above embodiment is: Screw the adjusting ring 8 into the center tube 10, put it on the outer sleeve 5 through the shear pin 9, put the slip 7 on the upper end of the center tube 10, put the cone 6 in the slip 7, the outer wall of the cone 6 is adapted to the conical slope of the inner wall of the slip 7, screw the reducer 3 and the outer sleeve 5 together, put the O-ring 2 in the groove of the piston 4 and then assemble it in the upper joint 1 together with the piston 4, and then screw the external thread of the upper joint 1 into the reducer 3 to complete the assembly.

[0039] The working principle of the present invention is as follows: The piston 4 can be pushed to move by pressing the threaded through hole on the external joint, and the pressure can be accurately opened and controlled. The outer wall of the cone 6 is provided with a conical slope adapted to the contact point of the slip 7. As the cone 6 moves downward, the slip 7 extends to both sides and gradually seals on the casing 5; Continue to pressurize to the target value. When the impact force is increased, the corresponding thrust will also increase. At this time, two situations may occur. In the first situation, the higher the pressure, the deeper the piston 4 goes down, the more the two sides of the slip 7 extend, and the tighter the bite on the casing 5 is, ensuring that the test sample will not move down a little bit until the pressure is increased to the target value. It is still stable, indicating that under this pressure value condition, this slip 7 and this parameter casing 5 can achieve stable anchoring; In the second case, the higher the pressure is and the deeper the pressure plate goes, the more the two sides of the slip 7 extend and the tighter it bites on the casing 5. In the process of subsequently pressurizing to the target value, since the slip 7 cannot be stably anchored, the test sample will begin to move downward as a whole under the pressure value (slip 7 is loosened). There may be two levels of movement: 1. Slight slippage, which can be observed by whether the pressure value applied from the upper end can be maintained, and whether the pin has slight grooves or indentations after being taken out. 2. Large amounts of movement, resulting in direct shortening of the pin.

[0040] The present invention can realize the conversion of hydraulic pressure into mechanical thrust, thereby adding load to the anchoring system of the bridge plug slip 7; it can record and verify whether the bridge plug slip 7 is well anchored; the simulation casing 5 of different specifications can be replaced, thereby meeting the anchoring performance test of bridge plugs of different specifications and sizes; there is no need to use a complete prototype for each test; only the slip 7 part is simulated to reduce the test cost, and at the same time, it can be quickly and repeatedly disassembled and assembled to realize multiple tests on the anchoring of the bridge plug slip 7; it has a simple structure, low cost, easy operation and strong versatility.

[0041] Example 4 The application of a high-temperature and high-pressure bridge plug slip anchoring performance rapid detection device of the present invention is explained below through a specific example.

[0042] (I) Bridge plug slip detection implementation example: A 105MPa high temperature and high pressure bridge plug slip detection suitable for 7"35# casing.

[0043] The target value of slip detection for this model prototype is calculated as follows: Working pressure difference PMAX=105MPa Pressure-bearing cross-sectional area S = π (0.1525 / 2) 2 = 0.0183 m 2 According to F=PS=1922000N According to the above invention method, a prototype is made, and the cross-sectional area of ​​the hydraulic force in the front section is designed to be: π (0.18 / 2) 2 =0.0254m 2 According to P=F / S=1920000 / 0.0254=75.6MPa Therefore, the test fixture made according to the invention plus a 105MPa hydraulic pressure test pump can complete the stability test of the slip, and the 105MPa hydraulic pressure test pump is a basic configuration of machinery manufacturers, and the supporting cost of a single test can be basically ignored.

[0044] (II) 105MPa high temperature and high pressure packer slip detection for 7-5 / 8" 161mm inner diameter casing The target value of slip detection for this model prototype is calculated as follows: Working pressure difference PMAX=105MPa Pressure-bearing cross-sectional area S=π(0.161 / 2) 2 =0.02m 2 According to F=PS=2138000N According to the above invention method, a prototype is made, and the cross-sectional area of ​​the hydraulic force in the front section is designed to be π (0.18 / 2) 2 =0.0254m 2 According to P=F / S=2138000 / 0.0254=84.2MPa Therefore, the test tooling manufactured according to the invention is equipped with a 105MPa hydraulic pressure test pump and can complete the stability test of the slips.

[0045] Although the specific implementation of the present invention is described in detail in conjunction with the drawings, it should not be understood as limiting the scope of protection of this patent. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative work still fall within the scope of protection of this patent.

[0046] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A high-temperature and high-pressure bridge plug slip anchoring performance rapid detection device, characterized in that: The invention comprises an upper joint (1), a piston (4), a cone (6), an adjusting ring (8), a sleeve (5), a center tube (10) and a reducer (3); the upper joint (1) and the sleeve (5) are coaxially connected at both ends of the reducer (3); the piston (4) is slidably connected in the upper joint (1); the cone (6), the adjusting ring (8) and the center tube (10) are all located inside the sleeve (5); the adjusting ring (8) is connected to the outer side of the lower end of the center tube (10) and is connected to a shear pin (9) passing through the sleeve (5) to check the slip of a slipper (7); the cone (6) is slidably connected to the outer side of the upper end of the center tube (10), one end of which is connected to the end surface of the piston (4); the slipper (7) is arranged on the center tube (10) between the cone (6) and the adjusting ring (8).

2. A high-temperature and high-pressure bridge plug slip anchoring performance rapid detection device according to claim 1, characterized in that: An end surface of one end of the piston (4) and an inner end surface of the upper joint (1) form a closed cavity, and the piston (4) is pushed to move by applying pressure into the closed cavity from the outside.

3. A high-temperature and high-pressure bridge plug slip anchoring performance rapid detection device according to claim 1, characterized in that: The cone (6) is a through-hole structure, one end of which is connected to the end surface of the piston (4) away from the upper joint (1), and the shape matches the end surface of the piston (4).

4. A high-temperature and high-pressure bridge plug slip anchoring performance rapid detection device according to claim 1, characterized in that: One end of the upper joint (1) connected to the piston (4) is connected to the interior of the upper end of the reducer (3), and the external thread of the upper joint (1) cooperates with the internal thread of the upper end of the reducer (3) to achieve connection.

5. A high-temperature and high-pressure bridge plug slip anchoring performance rapid detection device according to claim 1, characterized in that: The sleeve (5) is connected to the interior of the lower end of the reducer (3), and the internal thread at the lower end of the reducer (3) cooperates with the external thread at the upper end of the sleeve (5) to achieve connection.

6. A high-temperature and high-pressure bridge plug slip anchoring performance rapid detection device according to claim 1, characterized in that: The outer wall of the cone (6) at the contact point with the slip (7) is provided with a conical inclined surface adapted to the outer shape of the slip (7).

7. A high-temperature and high-pressure bridge plug slip anchoring performance rapid detection device according to claim 2, characterized in that: A threaded through hole is provided at the centre of the end face of the upper joint (1) away from the piston (4); the threaded through hole is connected to a sealed cavity formed between the piston (4) and the upper joint (1); the piston (4) is pushed to move in the upper joint (1) by pressing through the threaded hole.

8. A high-temperature and high-pressure bridge plug slip anchoring performance rapid detection device according to claim 1, 2 or 7, characterized in that: An O-ring (2) is provided on the contact surface where the upper joint (1) is connected to the piston (4).

9. A high-temperature and high-pressure bridge plug slip anchoring performance rapid detection device according to claim 1, characterized in that: The center tube (10) is a stepped columnar body that is wider at the bottom and narrower at the top. The adjusting ring (8) is connected to the outer circumferential surface of the center tube (10) with a larger diameter. The outer thread at the lower end of the center tube (10) cooperates with the inner thread of the adjusting ring (8) to achieve connection. An annular groove is provided on the outer circumferential surface of the adjusting ring (8). A through hole is provided on the sleeve (5) at a position corresponding to the annular groove. The shear pin (9) is placed in the annular groove through the through hole on the sleeve (5).

Images