An ultra-high hole density long cluster perforating gun

Abstract

This utility model relates to the field of oil and gas perforation equipment technology. Addressing the problem that existing ultra-high density perforating guns cannot perform selective blasting and perforation operations, and are only suitable for conventional oil pipe perforation operations, but cannot be applied to cluster perforation operations, this invention provides an ultra-high density long cluster perforating gun, comprising multiple perforating guns and a gun head assembly. Adjacent perforating guns are connected via a windowed connector assembly. The windowed connector assembly includes a windowed connector and a compressible connector pin assembly. The entire perforating gun is connected by contacting the conductive core rod on the perforating gun through the connector pin assembly. A detonation device including an electronic selective firing switch is installed at the window of the windowed connector, enabling selective blasting through the electronic selective firing switch and a wire connection. This ultra-high density long cluster perforating gun combines the characteristics of ultra-high density and selective perforation, achieving ultra-high density long-gun cluster perforation, and can be applied to cable cluster perforation operations.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas perforation equipment technology, and more specifically, to an ultra-high hole density long cluster perforation gun. Background Technology

[0002] Ultra-high density perforating guns are suitable for casing perforation in oil and gas wells and water wells. Currently, most ultra-high density perforating guns on the market are conventional tubing perforation guns, typically used in wells designed for conventional tubing perforation. They employ deep-penetrating or large-diameter perforating cartridges, achieving a perforation density of 20 to 40 cartridges per meter and a perforation phase of 45° to 135°. By deploying ultra-high density perforating cartridges to blast through the casing and downhole, perforation is performed within the maximum density range, efficiently opening oil channels to the target formation with minimal damage to the casing, increasing the volume of drainage channels, and maximizing oil production.

[0003] The aforementioned conventional ultra-high hole density perforating guns, due to their large number of perforating cartridges, dense perforation pattern, and simple design, currently only use detonating cord connections. The perforating gun and connector require a detonating tube to connect the detonating cord sequentially, lacking internal wiring. Once the cartridge is ignited, it detonates all cartridges sequentially, unlike cluster perforations which allow for selective blasting. Therefore, selective perforation is not feasible and is only suitable for conventional oil pipe perforation. It has not yet been used in cable cluster perforation. However, the demand for cluster perforation operations has been increasing both domestically and internationally in recent years. Applying ultra-high hole density long perforating guns to cable cluster perforation would enable selective blasting perforating guns in the long-gun field, a design that could have a significant impact on the perforation industry.

[0004] Therefore, there is an urgent need to provide an ultra-high aperture density long-gun clustering firing gun that can achieve the purpose of ultra-high aperture density long gun clustering firing, so as to solve the technical problem of long guns having no basis for clustering firing. Utility Model Content

[0005] The purpose of this invention is to solve the problem that existing ultra-high porosity perforating guns cannot perform selective blasting and perforation operations, and are only suitable for conventional oil pipe perforation operations, but cannot be applied to cluster perforation operations. This invention provides an ultra-high porosity long cluster perforating gun, which can achieve the technical effect of ultra-high porosity long gun cluster perforation.

[0006] This utility model is achieved through the following technical solution: an ultra-high porosity long cluster perforating gun, comprising multiple perforating guns and a gun head assembly; adjacent two perforating guns are connected by a windowed connector assembly; the windowed connector assembly includes a windowed connector and a compressible connector pin assembly, the connector pin assembly being inserted into the windowed connector, and a detonation device is installed on the side of the windowed connector away from the connector pin assembly, the detonation device including an electronic firing switch; one end of the connector pin assembly is connected to a conductive core rod contact on one of the perforating guns, and the other end of the connector pin assembly is connected to the electronic firing switch via a wire, and the electronic firing switch is connected to the wire of another perforating gun.

[0007] Preferably, there are two perforating guns, including a first perforating gun and a second perforating gun. The first and second perforating guns each include a first barrel and a second barrel, and a magazine assembly and a magazine assembly are respectively arranged inside the first and second barrels. The first magazine assembly includes a magazine tube and an upper positioning plate and a lower positioning plate respectively located at both ends of the magazine tube. The second magazine assembly includes a magazine tube and an upper positioning plate and a lower positioning plate respectively located at both ends of the magazine tube. The first magazine tube is connected to the first barrel through the upper positioning plate and the lower positioning plate, and the second magazine tube is connected to the second barrel through the upper positioning plate and the lower positioning plate. Both the first and second magazine tubes are equipped with perforating bullets.

[0008] Preferably, the gun head assembly includes a gun head body, the gun head body is connected to the upper end of the first magazine tube through the first upper positioning plate, the lower end of the first magazine tube is connected to one end of the window opening connector through the first lower positioning plate, and the other end of the window opening connector is connected to the upper end of the second magazine tube through the second upper positioning plate.

[0009] Preferably, the detonation device further includes a detonator and a detonating cord, the detonator is connected to one of the wires of the electronic firing switch, and the detonator is connected to each of the perforating projectiles through the detonating cord.

[0010] Preferably, the middle connector pin assembly includes an upper pin, a lower pin, and a pin cylinder. The upper pin passes through a plug at one end of the pin cylinder near the upper positioning disk, and the lower pin is inserted at the other end of the pin cylinder. Both the upper and lower pins are equipped with a pressure spring. The upper pin is connected to a contact point of the upper conductive core rod in the hollow cavity of the upper positioning disk, and the lower pin is connected to the electronic selector switch via a wire.

[0011] Preferably, a cover plate is also provided at the window of the joint in the window opening.

[0012] Preferably, a partition wall is provided on the side of the upper positioning plate two near the spring rack tube two.

[0013] Preferably, both the first and second sections of the ammunition rack tube are multi-segmented. The first ammunition rack assembly further includes an intermediate positioning plate, and the second ammunition rack assembly further includes an intermediate positioning plate. Adjacent sections of the first ammunition rack tube are connected by the intermediate positioning plate, and adjacent sections of the second ammunition rack tube are connected by the intermediate positioning plate.

[0014] Preferably, the gun head assembly further includes a gun head pin assembly, which includes a pin cylinder, a contact pin, and a pin. The pin cylinder is inserted through the gun head body, the contact pin is inserted at one end of the pin cylinder, and the pin is inserted at the other end of the pin cylinder. The end of the pin away from the pin cylinder is in contact with the upper conductive core rod in the hollow cavity of the upper positioning plate. The pin is equipped with a pressure spring.

[0015] Preferably, the inner surface of the first barrel and the inner surface of the second barrel are provided with blind holes corresponding to the firing bullets.

[0016] The technical solution of this utility model has the following beneficial effects:

[0017] (1) Contact structure design: The middle connector is a windowed structure. The compressible middle connector pin assembly in the windowed middle connector assembly can make contact with the conductive core rod on the perforating gun to realize the connection of the entire perforating gun, realize ultra-high hole density long gun cluster perforation, and selective blasting can be carried out as needed through electronic selective firing switch and wire connection.

[0018] The center connector pin assembly features a compressible contact pin. One end of the assembly has a spring-loaded compressible contact structure that connects to the upper conductive core of the second perforating gun, with a large compression margin. The other end of the assembly also has a wire that connects to the electronic firing switch's wire via a window. The electronic firing switch has multiple wires; one of these wires is manually connected to the perforating gun's wire via a window on the center connector, and another wire connects to a grounding screw for grounding. If the ultra-long perforating gun relied entirely on contact points, the connection would be unstable. The manually connected wires prevent the electrical signal from being affected by explosions. This combined contact and wire connection effectively prevents the impact of the explosion from affecting the connection between the perforating guns.

[0019] (2) Explosion-proof design of upper positioning plate: A partition wall is set on the side of the upper positioning plate two near the second cartridge tube. The partition wall can effectively block the instantaneous impact pressure generated when the second perforating gun explodes, avoid damaging the pin in the middle connector pin assembly, and effectively prevent the cartridge tube from deforming during explosion and affecting the contact effect.

[0020] (3) Segmented design of the cartridge rack assembly: The cartridge rack tube of the ultra-long perforation gun is divided into multiple segments and connected together. Dividing it into multiple segments makes it easier to control the accuracy of the cartridge rack tube. The intermediate positioning plate connected in the middle can not only provide support but also effectively prevent the cartridge rack tube from deforming easily after being loaded with ultra-high perforation density perforation bullets.

[0021] (4) Limiting design of the entire magazine assembly: Since the perforating gun is long and has a lot of bullets, after the whole gun is installed, the magazine tube may be misaligned with the blind hole on the barrel due to the gravity of the long and high-density perforating bullets. Therefore, a limiting screw is set on the lower positioning plate and a keyway is set at the lower end of the barrel. By twisting the lower positioning plate, the limiting screw can be inserted into the keyway at the lower end of the barrel, thereby adjusting the hole position of the entire magazine assembly to align the perforating bullet and the blind hole of the barrel. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the ultra-high aperture density long cluster perforation gun in Embodiment 1 of this utility model;

[0023] Figure 2 This is a cross-sectional view of the ultra-high aperture density long cluster perforation gun in Embodiment 1 of this utility model;

[0024] Figure 3 for Figure 2 A magnified structural diagram of part A in the middle;

[0025] Figure 4 This is a cross-sectional view of the connector pin assembly in Embodiment 1 of this utility model;

[0026] Figure 5 for Figure 2 A magnified structural diagram of part B in the middle section.

[0027] Reference numerals: 1-Gunhead assembly, 11-Gunhead body, 12-Gunhead pin assembly, 121-Pin cylinder II, 122-Contact pin, 123-Pin, 124-Pressure spring II, 2-Window opening connector assembly, 21-Window opening connector, 22-Connector pin assembly, 221-Upper pin, 222-Lower pin, 223-Pin cylinder I, 224-Plug, 225-Pressure spring I, 23-Detonating device, 231-Electronic firing switch, 232-Detonator, 233-Detonating cord 24-Cover plate, 3-Perforation gun one, 31-Barrel one, 32-Ammunition rack assembly one, 321-Ammunition rack tube one, 322-Upper positioning plate one, 323-Lower positioning plate one, 324-Middle positioning plate one, 325-Upper conductive core rod one, 4-Perforation gun two, 41-Barrel two, 42-Ammunition rack assembly two, 421-Ammunition rack tube two, 422-Upper positioning plate two, 423-Lower positioning plate two, 424-Upper conductive core rod two, 425-Partition wall, 426-Middle positioning plate two, 5-Blind hole. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown herein can generally be arranged and designed in various different configurations.

[0029] 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 claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] Example 1

[0032] like Figures 1 to 5As shown, this embodiment provides an ultra-high porosity long cluster perforating gun, including multiple perforating guns and a gun head assembly 1. Adjacent perforating guns are connected by a windowed connector assembly 2. The windowed connector assembly 2 includes a windowed connector 21 and a compressible connector pin assembly 22 inserted into the windowed connector 21. A detonation device 23 is installed on the side of the window of the windowed connector 21 away from the connector pin assembly 22. The detonation device 23 includes an electronic firing switch 231. The connector pin assembly 22 is connected to a conductive core rod contact on one of the perforating guns. The other end of the connector pin assembly 22 is connected to the electronic firing switch 231 via a wire, and another wire of the electronic firing switch 231 is connected to the wire of another perforating gun.

[0033] This ultra-high aperture density long cluster perforating gun combines the features of ultra-high aperture density and selective perforation. The central connector has an open window structure. The entire perforating gun can be connected by contacting the conductive core rod on the perforating gun through the compressible central connector pin assembly 22 in the open window central connector assembly 2. This enables ultra-high aperture density long gun cluster perforation. Furthermore, through the electronic selective firing switch 231 and wire connection, a specific perforating gun can be selectively blasted as needed. It can be applied in cable cluster perforation operations.

[0034] In this embodiment, there are two perforating guns, namely a first perforating gun 3 and a second perforating gun 4. The first perforating gun 3 and the second perforating gun 4 each include a first barrel 31 and a second barrel 41, respectively. A first magazine assembly 32 and a second magazine assembly 42 are respectively arranged inside the first barrel 31 and the second barrel 41. The first magazine assembly 32 includes a first magazine tube 321, and an upper positioning plate 322 and a lower positioning plate 323 respectively disposed at both ends of the first magazine tube 321. The second magazine assembly 42 includes a second magazine tube 421, and an upper positioning plate 422 and a lower positioning plate 423 respectively located at both ends of the second magazine tube 421; the first magazine tube 321 is connected to the first barrel 31 through the upper positioning plate 322 and the lower positioning plate 323, and the second magazine tube 421 is connected to the second barrel 41 through the upper positioning plate 422 and the lower positioning plate 423. Both the first magazine tube 321 and the second magazine tube 421 are equipped with firing holes.

[0035] In this embodiment, the gun head assembly 1 includes a gun head body 11. The gun head body 11 is connected to the upper end of the magazine tube 321 via an upper positioning plate 322. The lower end of the magazine tube 321 is connected to one end of the window opening connector 21 via a lower positioning plate 323. The other end of the window opening connector 21 is connected to the upper end of the magazine tube 421 via an upper positioning plate 422.

[0036] In this embodiment, the detonation device 23 further includes a detonator 232 and a detonating cord 233. The detonator 232 is connected to one of the wires of the electronic selective firing switch 231, and the detonator 232 is connected to each perforation projectile via the detonating cord 233. The electronic selective firing switch 231 is responsible for triggering the entire detonation process. By sending an electrical signal, it controls the activation of the detonator 232 to achieve precise control of the explosion. The detonator 232 is used to output detonation after receiving a specified electrical signal. The detonating cord 233 is used to transmit the detonation after receiving the detonation from the detonator 232. The perforation projectile is used to charge and punch through the perforation after receiving the detonation from the detonating cord 233, opening the oil and gas passage.

[0037] In this embodiment, the middle connector pin assembly 22 includes an upper pin 221, a lower pin 222, and a pin barrel 223. The upper pin 221 passes through a plug 224 and is inserted into one end of the pin barrel 223 near the upper positioning disk 422. The lower pin 222 is inserted into the other end of the pin barrel 223. Both the upper pin 221 and the lower pin 222 are equipped with a pressure spring 225. The upper pin 221 is in compression contact with the upper conductive core rod 424 in the hollow cavity of the upper positioning disk 422. The lower pin 222 is connected to the electronic selector switch 231 through a wire. After the connection is made, it is placed in the windowed middle connector 21.

[0038] The center connector pin assembly 22 features a compressible contact pin, ensuring good contact between all contacts during insertion, thereby reducing contact resistance and ensuring stable transmission of current and signals. One end of the center connector pin assembly 22 is a spring-loaded compressible contact structure, connecting to the upper conductive core rod 424 of the perforating gun 2, with a large compression margin. The other end of the center connector pin assembly 22 also has a wire, which connects to the wire of the electronic firing switch 231 through the window. The electronic firing switch 231 has multiple wires; one of the wires is manually connected to the wire of the perforating gun 3 through the window on the open-window center connector 21, and another wire is connected to the grounding screw for grounding. If the ultra-long perforating gun relies entirely on contact points, the connection may be unstable. The manually connected wires are not affected by explosions, thus this combined contact and wire connection method effectively prevents the impact force generated during the explosion of the perforating gun from affecting the connection instability between the perforating guns.

[0039] In this embodiment, a cover plate 24 is also provided at the window of the central connector 21. The cover plate 24 can seal the central connector pin assembly 22, thereby making it waterproof and dustproof, preventing accidental contact, and ensuring operational safety.

[0040] In this embodiment, a partition wall 425 is provided on the side of the upper positioning plate 422 near the cartridge tube 421. The partition wall 425 can effectively block the instantaneous impact pressure generated when the perforating gun 4 explodes, avoid damaging the pin in the middle connector pin assembly 22, and effectively prevent the cartridge tube from deforming during the explosion and affecting the contact effect.

[0041] In this embodiment, both the first shell holder tube 321 and the second shell holder tube 421 are multi-segmented. The first shell holder assembly 32 also includes a first intermediate positioning plate 324, and the second shell holder assembly 42 also includes a second intermediate positioning plate 426. Adjacent segments of the first shell holder tube 321 are connected by the first intermediate positioning plate 324, and adjacent segments of the second shell holder tube 421 are connected by the second intermediate positioning plate 426.

[0042] By using a segmented design for the magazine assembly, the magazine tube of the ultra-long perforation gun is divided into multiple sections and connected together. Dividing it into multiple sections makes it easier to control the accuracy of the magazine tube. The intermediate positioning plate connecting the sections can not only provide support but also effectively prevent the magazine tube from deforming easily after being loaded with ultra-high perforation density perforation bullets due to its excessive length.

[0043] In this embodiment, the gun head assembly 1 further includes a gun head pin assembly 12. The gun head pin assembly 12 includes a pin cylinder 121, a contact pin 122, and a pin 123. The pin cylinder 121 is inserted through the gun head body 11. The contact pin 122 is inserted into one end of the pin cylinder 121. The pin 123 is inserted into the other end of the pin cylinder 121. The end of the pin 123 away from the pin cylinder 121 is in contact with the upper conductive core rod 325 in the hollow cavity of the upper positioning plate 322. The pin 123 is equipped with a pressure spring 124.

[0044] The contact pin 122 is responsible for receiving electrical signals and sending signals to the insertion pin 123 at the appropriate time. It contacts the upper conductive core rod 325 inside the hollow cavity of the upper positioning plate 322 to form an electrical connection, allowing the transmission of current or signals. The pressure spring 124 is used to provide the necessary clamping force between the contact pin 122 and the insertion pin 123 to ensure that they maintain good contact during connection.

[0045] In this embodiment, the inner surfaces of both the first barrel 31 and the second barrel 41 are provided with blind holes 5 corresponding to the perforating bullets. The design of the blind holes 5 ensures that the perforating bullets can be accurately aligned with the explosive components of the barrel, preventing incorrect installation of different types of perforating bullets and stabilizing the position of the perforating bullets. By twisting the lower positioning plate, the hole positions of the entire magazine assembly can be adjusted to align the perforating bullets and the blind holes 5 in the barrel. Furthermore, a limiting screw can be provided on the lower positioning plate, and a keyway can be provided at the lower end of the barrel. Since the perforating gun is long and has a large number of bullets, after the entire gun is installed, the magazine tube may be misaligned with the blind holes 5 on the barrel due to the weight of the long and high-density perforating bullets. In this case, the lower positioning plate can be twisted to make the limiting screw engage in the keyway at the lower end of the barrel, adjusting the hole positions of the entire magazine assembly to align the perforating bullets and the blind holes 5 in the barrel.

[0046] Working principle and steps:

[0047] The gun head assembly 1 is connected to the perforating gun 3 by contact. The gun head pin assembly 12 on the gun head assembly 1 contains a pressure spring 124 and a contact pin 122. The compressible structure is connected to the upper conductive core rod 325 of the perforating gun 3. The intermediate connector is designed as a windowed intermediate connector 21, which houses the intermediate connector pin assembly 22. One end of the intermediate connector pin assembly 22 has a wire, which is used to connect to the electronic firing switch 231. The electronic firing switch 231 has multiple wires: one connects to the upper perforating gun 3, one connects to the wire on the intermediate connector pin assembly 22 to connect to the next perforating gun 4, one connects to the grounding screw at the upper end of the windowed intermediate connector 21 for grounding, and the other two connect to the detonator 232. The detonator 232 and the detonating cord 233 are connected to detonate the gun string. The other end of the intermediate connector pin assembly 22 does not have a wire and is a compressible contact design. It is connected to the upper conductive core rod 424 of the perforating gun 4 by contact, thus realizing the connection of the entire gun. The electronic selective firing switch 231 controls the detonator 232, which in turn controls the detonating cord 233 to achieve selective blasting of the perforating gun. Multiple window-type connector assemblies 2 can be installed to connect more perforating guns. Each window-type connector assembly 2 is equipped with an electronic selective firing switch 231 and a detonator 232, which sequentially control their respective perforating guns. By selecting the ignition of the electronic selective firing switch 231, a specific perforating gun can be selectively blasted as needed.

[0048] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-density, long-cluster perforating gun, characterized in that, Includes multiple perforating guns and gun head assembly (1); The two adjacent perforating guns are connected by a windowed connector assembly (2); The window-opening connector assembly (2) includes a window-opening connector (21) and a compressible connector pin assembly (22). The connector pin assembly (22) is inserted into the window-opening connector (21). A detonating device (23) is installed on the side of the window of the window-opening connector (21) away from the connector pin assembly (22). The detonating device (23) includes an electronic firing switch (231). One end of the center connector pin assembly (22) is connected to the conductive core contact of one of the perforating guns, and the other end of the center connector pin assembly (22) is connected to the electronic firing switch (231) via a wire, and the electronic firing switch (231) is connected to the other perforating gun wire.

2. The ultra-high aperture density long cluster perforation gun according to claim 1, characterized in that, The number of the perforating guns is two, and the two perforating guns include a first perforating gun (3) and a second perforating gun (4). The first perforating gun (3) and the second perforating gun (4) respectively include a first barrel (31) and a second barrel (41). The first barrel (31) and the second barrel (41) are respectively provided with a first magazine assembly (32) and a second magazine assembly (42). The first cartridge holder assembly (32) includes a first cartridge holder tube (321), and an upper positioning plate (322) and a lower positioning plate (323) respectively disposed at both ends of the first cartridge holder tube (321); the second cartridge holder assembly (42) includes a second cartridge holder tube (421), and an upper positioning plate (422) and a lower positioning plate (423) respectively disposed at both ends of the second cartridge holder tube (421). The first magazine tube (321) is connected to the first barrel (31) via the first upper positioning plate (322) and the first lower positioning plate (323). The second magazine tube (421) is connected to the second barrel (41) via the second upper positioning plate (422) and the second lower positioning plate (423). Both the first magazine tube (321) and the second magazine tube (421) are equipped with firing holes.

3. The ultra-high porosity long cluster perforating gun according to claim 2, characterized in that, The gun head assembly (1) includes a gun head body (11). The upper end of the gun head body (11) is connected to the upper end of the first magazine tube (321) via the upper positioning plate (322). The lower end of the first magazine tube (321) is connected to one end of the window opening connector (21) via the lower positioning plate (323). The other end of the window opening connector (21) is connected to the upper end of the second magazine tube (421) via the upper positioning plate (422).

4. The ultra-high porosity long cluster perforating gun according to claim 2, characterized in that, The detonation device (23) further includes a detonator (232) and a detonating cord (233). The detonator (232) is connected to one of the wires of the electronic firing switch (231). The detonator (232) is connected to each of the perforating projectiles through the detonating cord (233).

5. The ultra-high porosity long cluster perforating gun according to claim 4, characterized in that, The middle connector pin assembly (22) includes an upper pin (221), a lower pin (222), and a pin cylinder (223). The upper pin (221) passes through a plug (224) at one end of the pin cylinder (223) near the upper positioning plate (422). The lower pin (222) is inserted at the other end of the pin cylinder (223). Both the upper pin (221) and the lower pin (222) are equipped with a pressure spring (225). The upper pin (221) is connected to the upper conductive core rod (424) in the hollow cavity of the upper positioning disk (422), and the lower pin (222) is connected to the electronic selector switch (231) through a wire.

6. The ultra-high porosity long-cluster perforating gun according to claim 4, characterized in that, A cover plate (24) is also provided at the window of the joint (21) in the window opening.

7. The ultra-high porosity long-cluster perforating gun according to any one of claims 2 to 6, characterized in that, A partition wall (425) is provided on the side of the upper positioning plate two (422) near the spring rack tube two (421).

8. The ultra-high aperture density long cluster perforation gun according to claim 2, characterized in that, Both the first (321) and the second (421) of the ammunition rack are multi-segmented. The first (32) of the ammunition rack assembly also includes a first (324) of the intermediate positioning plate and the second (42) of the ammunition rack assembly also includes a second (426) of the intermediate positioning plate. Two adjacent segments of the first (321) of the ammunition rack are connected by the first (324) of the intermediate positioning plate and two adjacent segments of the second (421) of the ammunition rack are connected by the second (426) of the intermediate positioning plate.

9. The ultra-high aperture density long cluster perforation gun according to claim 3, characterized in that, The gun head assembly (1) further includes a gun head pin assembly (12), which includes a pin cylinder (121), a contact pin (122), and a pin (123). The pin cylinder (121) is inserted through the gun head body (11), the contact pin (122) is inserted into one end of the pin cylinder (121), and the pin (123) is inserted into the other end of the pin cylinder (121). The end of the pin (123) away from the pin cylinder (121) is in contact with the upper conductive core rod (325) in the hollow cavity of the upper positioning plate (322). The pin (123) is equipped with a pressure spring (124).

10. The ultra-high porosity long-cluster perforating gun according to claim 2, characterized in that, The inner surface of the first barrel (31) and the inner surface of the second barrel (41) are provided with blind holes (5) corresponding to the firing bullets.

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