A type of shaped charge detonation device for pipeline-delivered perforating guns

Abstract

This invention relates to the field of oil and gas well perforation technology, and more particularly to a shaped charge detonation device for perforating guns transported in tubing. The device includes a double male connector, with its two ends connected to an upper-level perforating gun and a female connector, respectively. The female connector connects to a lower-level perforating gun. An upper centralizer is installed inside the double male connector, and a lower centralizer is installed inside the female connector. A first detonation tube and a first detonating cord are installed inside the upper centralizer. The first detonation tube is connected to the first detonating cord, and the other end of the first detonating cord is connected to the perforating projectile of the upper-level perforating gun. A second detonation tube and a second detonating cord are installed inside the lower centralizer. The second detonation tube is connected to the second detonating cord, and the other end of the second detonating cord is connected to the perforating projectile of the lower-level perforating gun. The upper centralizer is connected to an upper positioning plate, and the lower centralizer is connected to a lower positioning plate. The detonation device provided by this invention has a simple structure, eliminating complex assembly structures, making on-site construction operations more convenient, and effectively improving detonation efficiency.

Description

Technical Field

[0001] This invention relates to the field of oil and gas well perforation technology, and in particular to a shaped charge transmission device for perforation guns transported through tubing. Background Technology

[0002] With the increasing workload of tubing-delivered perforation work year by year, rework issues caused by perforation failure occur on average every year, affecting production progress and increasing costs. At the same time, the double-center connection structure of tubing-delivered perforation is complex to operate and labor-intensive. Therefore, improving the sequential perforation technology to further improve the success rate is of practical significance. Statistics show that the rework wells with perforation failures each year have a common feature: the perforation failure point is about 10cm above the top of the lower perforation gun.

[0003] The detonator failed to detonate the entire detonating cord, only igniting a section of approximately 10cm. Analysis revealed the following main reasons: First, the detonating cord was tightened too much, resulting in insufficient cord density and inadequate detonation energy. Second, to prevent the detonator from being squeezed or impacted during connection, its end face is generally deeper than the required detonation distance. Excessive depth complicates operation, makes controlling the detonation distance difficult, and increases the risk of detonation failure. Furthermore, within the rubber stabilizer, the energy transmission of the detonator proceeds forward in a spherical manner. The energy transmission area is small, and according to the law of conservation of energy, some of the energy of the detonation wave is absorbed by the rubber centralizing sleeve during transmission, causing the energy of the next stage detonating tube to gradually decrease. Third, during the upper and lower connection of the intermediate joint, the detonating cord may break as the joint rotates, resulting in rework. Fourth, each perforating gun in a pipeline conveying system relies on a single detonating cord to transmit the detonation and detonate the perforating projectile to achieve the perforation purpose. Because the diameter of the detonating cord is easily affected by rarefaction waves during deflagration, the detonation energy continuously attenuates. Currently, pipeline conveying perforating guns use an intermediate joint to connect multiple perforating gun sections. The intermediate joint houses the upper and lower detonating tubes, detonating tube protectors, centralizing sleeves, and detonating cord locking components for detonation transmission. This easily creates gaps between the upper and lower detonating tubes, and there is an eccentricity between them, further affecting the transmission of the detonating cord's detonation energy. Furthermore, the assembly process requires high precision. Therefore, to address these shortcomings, this invention provides a shaped charge detonation transmission device between pipeline conveying perforating guns. Summary of the Invention

[0004] (a) The technical problem to be solved:

[0005] This invention provides a shaped charge detonation device for perforating guns in tubing transport, which overcomes the problems of high precision requirements, low detonation efficiency, and easy quality issues in the installation process of existing shaped charge detonation devices for perforating guns in tubing transport.

[0006] (II) Technical Solution:

[0007] To solve the above-mentioned technical problems, the present invention provides a tubing-delivery perforation gun shaped charge detonation device, comprising:

[0008] A double male connector is provided, with one end connected to an upper-level perforating gun and the other end connected to a male-female connector, which in turn connects to a lower-level perforating gun. An upper centralizer is installed inside the double male connector, and a lower centralizer is installed inside the male-female connector. A first detonating tube and a first detonating cord are installed inside the upper centralizer; the first detonating tube is connected to the first detonating cord, and the other end of the first detonating cord is connected to the perforating projectile of the upper-level perforating gun. A second detonating tube and a second detonating cord are installed inside the lower centralizer; the second detonating tube is connected to the second detonating cord, and the other end of the second detonating cord is connected to the perforating projectile of the lower-level perforating gun. The upper centralizer is connected to an upper positioning plate, and the lower centralizer is connected to a lower positioning plate.

[0009] The upper straightening body includes an upper straightening body body, one end of which is provided with an upper straightening body connector, and the other end is provided with an upper straightening body flared mouth. The outer wall of the upper straightening body body is provided with a set screw hole, and the inner side of the upper straightening body body is provided with an upper straightening body locking hole and an upper straightening body center hole.

[0010] The lower stabilizer includes a lower stabilizer body, one end of which is provided with a lower stabilizer connector and the other end is provided with a lower stabilizer flared mouth. The outer wall of the lower stabilizer body is provided with a set screw hole, and the inner side of the lower stabilizer body is provided with a lower stabilizer locking hole and a lower stabilizer center hole.

[0011] Preferably, the upper stabilizer locking hole is connected to the upper stabilizer center hole, a C-shaped spring is installed in the upper stabilizer locking hole, a set screw is installed in the set screw hole, the set screw abuts against the C-shaped spring, and the diameter of the upper stabilizer locking hole is larger than the diameter of the upper stabilizer center hole.

[0012] Preferably, the locking hole of the lower stabilizer is connected to the central hole of the lower stabilizer, a C-shaped spring is installed in the locking hole of the lower stabilizer, a set screw is installed in the set screw hole, the set screw abuts against the C-shaped spring, and the diameter of the locking hole of the lower stabilizer is larger than the diameter of the central hole of the lower stabilizer.

[0013] Preferably, one end of the first detonating tube passes through the upper stabilizer locking hole and the upper stabilizer center hole, and is led out at the upper stabilizer flare mouth, and the first detonating cord is installed in the upper stabilizer locking hole and the upper stabilizer center hole.

[0014] Preferably, one end of the second detonating tube passes through the locking hole and the center hole of the lower stabilizer and is led out at the flared end of the lower stabilizer, and the second detonating cord is installed in the locking hole and the center hole of the lower stabilizer.

[0015] Preferably, the upper and lower flared ends of the straightening body are distributed opposite to each other, the length of the upper flared body is greater than the length of the lower flared body, and both the upper and lower flared body joints are provided with external threads.

[0016] Preferably, the outer walls of the double male connector are provided with external threads at both ends; the outer walls of the male and female connector are provided with a fixing through hole at one end, internal threads at the inner wall, and external threads at the other end.

[0017] Preferably, the external thread of one end of the double male connector is connected to the internal thread of the male and female connector, the external thread of the other end of the double male connector is connected to the upper-level perforation gun, and the external thread of the male and female connector is connected to the lower-level perforation gun.

[0018] Preferably, the external threads of the double male connector are provided with double sealing rings, the external threads of the male and female connectors are provided with double sealing rings, and the set screw passes through the fixed through hole.

[0019] (III) Beneficial Effects:

[0020] The oil pipe conveying perforating gun shaped charge detonation device provided by this invention has a simple structure, eliminating the complex assembly structure of the original detonation tube protector and detonating cord locking assembly, making on-site construction operations more convenient and greatly improving detonation efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the shaped charge detonation device between the perforating guns in the tubing delivery system according to an embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the structure of the shaped charge transmission device between perforating guns according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the mechanism of the uprighting body in an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the stabilizing body according to an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the C-type spring sheet according to an embodiment of the present invention.

[0026] The components include: 1. Double male connector; 2. Male and female connector; 3. Upper centralizer; 4. Lower centralizer; 5. Upper positioning plate; 6. Lower positioning plate; 7. Lower perforation gun; 8. Upper perforation gun; 9-1. First detonation tube; 9-2. First detonation tube; 10-1. First detonating cord; 10-2. Second detonating cord; 11. C-shaped spring; 12. Set screw; 13-1. Upper centralizer body; 13-2. Lower centralizer body; 14-1. Upper centralizer connector; 14-2. Lower centralizer connector; 15. Set screw hole; 16-1. Upper centralizer flared mouth; 16-2. Lower centralizer flared mouth; 17-1. Upper centralizer locking hole; 17-2. Lower centralizer locking hole; 18-1. Upper centralizer center hole; 18-2. Lower centralizer center hole; 19. Fixing through hole; 20. Sealing ring. Implementation

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] In the description of this invention, it is necessary to understand that the orientations or positional relationships indicated by terms such as "left," "right," "up," "down," "inner," and "outer" are based on the orientations or positional relationships shown in the accompanying drawings. They are intended only to facilitate the description of this invention and to simplify the description, and are not intended to indicate or imply that the components referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0029] Figure 1 This is a schematic diagram of the structure of the shaped charge detonation device between the perforating guns in the tubing delivery system according to an embodiment of the present invention. Figure 2 This is a schematic diagram of the structure of the shaped charge transmission device between perforating guns according to an embodiment of the present invention, as shown below. Figure 1 and Figure 2As shown, this invention provides a shaped charge detonation device for perforating guns in oil pipeline transportation, including a double male connector 1. One end of the double male connector 1 is connected to an upper perforating gun 7, and the other end of the double male connector 1 is connected to a male-female connector 2. The male-female connector 2 is connected to a lower perforating gun 8. An upper centralizer 3 is installed inside the double male connector 1, and a lower centralizer 4 is installed inside the male-female connector 2. A first detonation tube 9-1 and a first detonating cord 10-1 are installed inside the upper centralizer 3. The first detonation tube 9-1 is connected to the first detonating cord 10-1, and the other end of the first detonating cord 10-1 is connected to the perforating projectile of the upper perforating gun 7. A second detonation tube 9-2 and a second detonating cord 10-2 are installed inside the lower centralizer 4. The second detonation tube 9-2 is connected to the second detonating cord 10-2, and the other end of the second detonating cord 10-2 is connected to the perforating projectile of the lower perforating gun 8. The upper centralizer 3 is connected to an upper positioning plate 5, and the lower centralizer 4 is connected to a lower positioning plate 6.

[0030] Figure 3 This is a schematic diagram of the mechanism of the uprighting body in an embodiment of the present invention, as shown below. Figure 3 As shown, the upper stabilizer 3 includes an upper stabilizer body 13-1. One end of the upper stabilizer body 13-1 is provided with an upper stabilizer connector 14-1, and the other end is provided with an upper stabilizer flared mouth 16-1. The outer wall of the upper stabilizer body 13-1 is provided with a set screw hole 15, and the inner side of the upper stabilizer body 13-1 is provided with an upper stabilizer locking hole 17-1 and an upper stabilizer center hole 18-1.

[0031] Figure 4 This is a schematic diagram of the structure of the stabilizing body in an embodiment of the present invention, as shown below. Figure 4 As shown, the lower stabilizer 4 includes a lower stabilizer body 13-2. One end of the lower stabilizer body 13-2 is provided with a lower stabilizer connector 14-2, and the other end is provided with a lower stabilizer flared mouth 16-2. The outer wall of the lower stabilizer body 13-2 is provided with a set screw hole 15, and the inner side of the lower stabilizer body 13-2 is provided with a lower stabilizer locking hole 17-2 and a lower stabilizer center hole 18-2.

[0032] In practical applications, the upper stabilizer locking hole 17-1 is connected to the upper stabilizer center hole 18-1. A C-shaped spring 11 is installed inside the upper stabilizer locking hole 17-1, and a set screw 12 is installed in the set screw hole 15. The set screw 12 abuts against the C-shaped spring 11. The diameter of the upper stabilizer locking hole 17-1 is larger than the diameter of the upper stabilizer center hole 18-1. The lower stabilizer locking hole 17-2 is connected to the lower stabilizer center hole 18-2. A C-shaped spring 11 is installed inside the lower stabilizer locking hole 17-2, and a set screw 12 is installed in the set screw hole 15. The set screw 12 abuts against the C-shaped spring 11. The diameter of the lower stabilizer locking hole 17-2 is larger than the diameter of the lower stabilizer center hole 18-2.

[0033] It should be noted that the inner diameter of the upper stabilizer locking hole 17-1 is larger than the inner diameter of the upper stabilizer center hole 18-1, and the inner diameter of the lower stabilizer locking hole 17-2 is larger than the inner diameter of the lower stabilizer center hole 18-2. Therefore, in both the upper stabilizer 3 and the lower stabilizer 4, the contact surface between the locking hole and the center hole forms a step. C-shaped spring pieces 11 are installed inside the locking holes. The step can effectively prevent the C-shaped spring pieces 11 from sliding out of the locking holes. At the same time, after the set screw 12 is installed through the set screw hole 15 of the upper stabilizer 3 and the lower stabilizer 4, the set screw 12 can squeeze the C-shaped spring pieces 11, further fixing and locking the first detonating cord 10-1 and the second detonating cord 10-2.

[0034] In addition, after the detonating cord is passed through, the C-type spring piece 11 can be tightened with the top screw 12. This replaces the original point contact with surface contact, which solves the problem of uneven density caused by the detonating cord being too tight. The reserved length of the detonating cord can be adjusted arbitrarily within a certain length range during connection, making the detonation distance easier to control.

[0035] Figure 5 This is a schematic diagram of the C-type spring sheet according to an embodiment of the present invention, as shown below. Figure 5 As shown, in practical applications, the C-type spring 11 is a one-piece structure. The C-type spring 11 is the side of an unclosed cylinder formed by wrapping a rectangular spring. When viewed from the side, the shape of the wrapping is similar to the letter "C", hence the name.

[0036] In this detonation transmission device, one end of the first detonation tube 9-1 passes through the upper stabilizing body locking hole 17-1 and the upper stabilizing body center hole 18-1, and is led out at the upper stabilizing body flare 16-1. The first detonating cord 10-1 is installed in the upper stabilizing body locking hole 17-1 and the upper stabilizing body center hole 18-1. One end of the second detonation tube 9-2 passes through the lower stabilizing body locking hole 17-2 and the lower stabilizing body center hole 18-2, and is led out at the lower stabilizing body flare 16-2. The second detonating cord 10-2 is installed in the lower stabilizing body locking hole 17-2 and the lower stabilizing body center hole 18-2.

[0037] It should be noted that the upper stabilizing body flared mouth 16-1 and the lower stabilizing body flared mouth 16-2 are distributed opposite to each other, the length of the upper stabilizing body 13-1 is greater than the length of the lower stabilizing body 13-2, and both the upper stabilizing body connector 14-1 and the lower stabilizing body connector 14-2 are provided with external threads.

[0038] In practical applications, both the upper centralizer's flared end 16-1 and the lower centralizer's flared end 16-2 are conical. After the perforating gun is detonated, they act as a concentrator to collect the detonation energy generated by the detonating cord, providing sufficient energy for the detonation of the lower perforating gun and realizing the function of energy transfer between guns. In this detonation transfer device, because the detonating cord's energy transfer is reduced due to environmental influences during the transfer process, both the upper centralizer 3 and the lower centralizer 4 are made of bakelite material with low energy absorption. Furthermore, the energy transfer of spherical detonation is also considered. Due to environmental influences, and to increase the contact area of ​​the detonation tube with the detonation wave, and for safety reasons, since the detonation tube connection cannot be exposed outside the centralizer, the end face of the upper centralizer 3 or lower centralizer 4 where the first detonation tube 9-1 and the second detonation tube 9-2 are connected is designed as an inverted cone structure. At the same time, the concentricity of the detonation is further considered in the inner diameter design, so the diameter of the inverted cone end is 7mm and the diameter of the other end is 10mm. This ensures concentricity and allows the detonating cord to easily pass through the centralizer.

[0039] In addition, both the upper stabilizer connector 14-1 and the lower stabilizer connector 14-2 are provided with external threads. The upper stabilizer connector 14-1 is installed on the upper positioning plate 5 at the top of the lower perforation gun 7, and the lower stabilizer connector 14-2 is installed on the lower positioning plate at the end of the upper perforation gun 8.

[0040] In this detonation device, the outer walls of the double male connector 1 are provided with external threads at both ends, and the outer walls of the male and female connector 2 are provided with a fixed through hole 19 at one end and internal threads at the inner wall, and external threads at the other end.

[0041] In practical applications, the external thread of one end of the double male connector 1 is connected to the internal thread of the male and female connector 2, and the external thread of the other end of the double male connector 1 is connected to the upper-level perforation gun 7. The external thread of the male and female connector 2 is connected to the lower-level perforation gun 8. In addition, the external threads of the double male connector 1 are provided with double sealing rings 20, and the external threads of the male and female connector 2 are provided with double sealing rings 20. The outer wall of the internal thread is provided with a fixing through hole 19. The set screw passes through the fixing through hole 19 and fixes the connection between the double male connector 1 and the male and female connector 2 by the set screw to prevent accidental disengagement.

[0042] The oil pipe conveying perforating gun shaped charge detonation device provided by this invention has a simple structure, eliminating the complex assembly structure of the original detonation tube protector and detonating cord locking assembly, making on-site construction operations more convenient and greatly improving detonation efficiency.

[0043] The following is combined with Figures 1 to 5 The present invention provides a further detailed description of the tubing-delivery perforation gun shaped charge detonation device:

[0044] In this embodiment, before performing the perforation operation, the following process of the present invention can be combined with the perforation gun to form a perforation gun string.

[0045] First, install the two C-shaped spring clips 11 into the upper central body locking holes 17-1 and 17-2 respectively. Extend the lower end of the upper perforating gun 8 to the second detonating cord 10-2 with the second detonating tube 9-2, and pass it through the lower central body locking hole 17-2, the lower central body center hole 18-2 and the lower central body bell mouth 16-2 in sequence. The second detonating tube 9-2 is flush with the end face of the lower central body bell mouth 16-2. The set screw 12 passes through the set screw hole 15 and squeezes the C-shaped spring clips 11 to ensure that the second detonating cord 10-2 is locked and cannot move back and forth. Then, install the lower central body connector 14-2 into the lower positioning plate 6 at the bottom of the upper perforating gun 8.

[0046] Similarly, the upper stabilizer 3 is installed on top of the lower perforation gun 7 in this manner.

[0047] When connecting perforating guns, use a double male connector 1 to fit over the upper stabilizer 3, with one end connected to the top thread of the lower perforating gun 7 and the other end flush with the end face of the upper stabilizer's bell mouth 16-1; use a male and female connector 2 to fit over the lower stabilizer 4 of the upper perforating gun 8, with the external thread connected to the bottom thread of the upper perforating gun 8; then connect the other end of the double male connector 1 to the internal thread of the male and female connector 1, and use a set screw to fix the connection between the double male connector 1 and the male and female connector 2 through the fixing through hole 19 to achieve the connection between the perforating guns.

[0048] After the perforating gun begins to detonate, the second detonating cord 10-2 inside the upper perforating gun 8 begins to rapidly burn along the top of the upper perforating gun 8, generating detonation energy. This ignites the perforating projectile passing through the detonating cord 10-2, thus detonating the upper perforating gun 8. Simultaneously, the detonation energy rapidly reaches the lower central body 4 at the bottom of the upper perforating gun 8. The detonation energy passes through the central hole 18-2 of the lower central body and ignites the second detonation tube 9-2, generating an even larger detonation wave. At the lower central body flare 16-2, the detonation energy accumulates, generating a shaped airflow similar to that of a perforating projectile. This airflow rapidly impacts the upper central body flare 16-1 of the lower perforating gun 7, thereby igniting the first detonation tube 9-1 at the upper central body flare 16-1 of the lower perforating gun 7, generating enormous detonation energy. This then ignites the first detonating cord 10-1, realizing the shaped detonation process between the perforating guns. By following this process, the shaped charge transfer between all guns in the perforation string and the initiation process of the perforating guns are completed, thus completing the perforation operation.

[0049] In practical applications, the device connects the upper and lower centralizers within double male and double female connectors. The detonation energy generated by the deflagration of the detonating cord inside the lower centralizer of the upper perforating gun ignites the detonation tube. The detonation energy of the detonation tube converges at the conical flare, generating a focused airflow along the axial direction. This airflow rapidly impacts the flare of the upper centralizer of the lower perforating gun, thereby igniting the detonation tube at the flare of the upper centralizer of the lower perforating gun. This achieves the focused detonation transmission function between perforating guns, avoiding the problem of detonation transmission failure between perforating guns due to gaps caused by non-contact detonation tubes or eccentricity of the detonation tubes.

[0050] In addition, this device proposes a locking hole structure for the centralizing body. By installing a C-shaped spring and coordinating with the top screw, the iron plate is tightened, which serves to fix and lock the detonating cord, preventing the detonating cord from accidentally detaching from the centralizing body. At the same time, the locking hole diameter is designed to be larger than the center hole, forming a stepped shape on the contact surface, which prevents the elastic iron plate from sliding and thus losing its function of fixing the detonating cord. Furthermore, the locking hole structure also serves to centralize the detonating cord.

[0051] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A shaped charge detonation device for oil pipeline conveying perforation guns, characterized in that, include: A double male connector (1) is provided, with one end connected to an upper-level perforating gun (7) and the other end connected to a male-female connector (2), which is connected to a lower-level perforating gun (8). An upper centralizer (3) is installed inside the double male connector (1), and a lower centralizer (4) is installed inside the male-female connector (2). A first detonating tube (9-1) and a first detonating cord (10-1) are installed inside the upper centralizer (3), and the first detonating tube (9-1) is connected to a first detonating cord. The first detonating cord (10-1) is connected to the perforating projectile of the upper perforating gun (7) at the other end. The lower centralizing body (4) is equipped with a second detonating tube (9-2) and a second detonating cord (10-2). The second detonating tube (9-2) is connected to the second detonating cord (10-2). The other end of the second detonating cord (10-2) is connected to the perforating projectile of the lower perforating gun (8). The upper centralizing body (3) is connected to the upper positioning plate (5). The lower centralizing body (4) is connected to the lower positioning plate (6). The upper stabilizer (3) includes an upper stabilizer body (13-1), one end of which is provided with an upper stabilizer connector (14-1) and the other end is provided with an upper stabilizer flared mouth (16-1). The outer wall of the upper stabilizer body (13-1) is provided with a set screw hole (15), and the inner side of the upper stabilizer body (13-1) is provided with an upper stabilizer locking hole (17-1) and an upper stabilizer center hole (18-1). The lower stabilizer (4) includes a lower stabilizer body (13-2), one end of which is provided with a lower stabilizer connector (14-2), and the other end is provided with a lower stabilizer flared mouth (16-2). The outer wall of the lower stabilizer body (13-2) is provided with a set screw hole (15), and the inner side of the lower stabilizer body (13-2) is provided with a lower stabilizer locking hole (17-2) and a lower stabilizer center hole (18-2).

2. The tubing-carrying perforation gun-interval shaped charge detonation device according to claim 1, characterized in that, The upper stabilizer locking hole (17-1) is connected to the upper stabilizer center hole (18-1). A C-shaped spring (11) is installed in the upper stabilizer locking hole (17-1). A set screw (12) is installed in the set screw hole (15). The set screw (12) abuts against the C-shaped spring (11). The diameter of the upper stabilizer locking hole (17-1) is larger than the diameter of the upper stabilizer center hole (18-1).

3. The tubing-carrying perforation gun-interval shaped charge detonation device according to claim 1, characterized in that, The lower stabilizer locking hole (17-2) is connected to the lower stabilizer center hole (18-2). A C-shaped spring (11) is installed in the lower stabilizer locking hole (17-2). A set screw (12) is installed in the set screw hole (15). The set screw (12) abuts against the C-shaped spring (11). The diameter of the lower stabilizer locking hole (17-2) is larger than the diameter of the lower stabilizer center hole (18-2).

4. The tubing-carrying perforation gun-interval shaped charge detonation device according to claim 2, characterized in that, One end of the first detonating tube (9-1) passes through the upper stabilizer locking hole (17-1) and the upper stabilizer center hole (18-1), and is led out at the upper stabilizer horn mouth (16-1). The first detonating cord (10-1) is installed in the upper stabilizer locking hole (17-1) and the upper stabilizer center hole (18-1).

5. The tubing-carrying perforation gun-interval shaped charge detonation device according to claim 3, characterized in that, One end of the second detonating tube (9-2) passes through the locking hole (17-2) and the center hole (18-2) of the lower stabilizer and is led out at the horn mouth (16-2) of the lower stabilizer. The second detonating cord (10-2) is installed in the locking hole (17-2) and the center hole (18-2) of the lower stabilizer.

6. The tubing-carrying perforation gun-interval shaped charge detonation device according to claim 1, characterized in that, The upper stabilizing body flared mouth (16-1) and the lower stabilizing body flared mouth (16-2) are distributed opposite to each other. The length of the upper stabilizing body main body (13-1) is greater than the length of the lower stabilizing body main body (13-2). Both the upper stabilizing body connector (14-1) and the lower stabilizing body connector (14-2) are provided with external threads.

7. The tubing-carrying perforation gun-interval shaped charge detonation device according to claim 1, characterized in that, The double male connector (1) has external threads at both ends of its outer wall; the male and female connector (2) has a fixed through hole (19) at one end of its outer wall, an internal thread at the inner wall, and an external thread at the other end.

8. The tubing-carrying perforation gun-interval shaped charge detonation device according to claim 7, characterized in that, The external thread of one end of the double male connector (1) is connected to the internal thread of the male and female connector (2), the external thread of the other end of the double male connector (1) is connected to the upper perforation gun (7), and the external thread of the male and female connector (2) is connected to the lower perforation gun (8).

9. The tubing-carrying perforation gun-interval shaped charge detonation device according to claim 7, characterized in that, The double male connector (1) is provided with double sealing rings (20) at the external thread, and the male and female connector (2) is provided with double sealing rings (20) at the external thread. The set screw passes through the fixed through hole (19).

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