Oil and gas well clustering perforation detonating device

Abstract

The utility model discloses an oil and gas well cluster perforation detonating device which comprises an upper computer, at least one selective switch and a protective cylinder, the number of the protective cylinder corresponds to that of the selective switch, one end of the protective cylinder is provided with a containing cavity, the selective switch is arranged in the containing cavity, and the upper computer is connected with the upper computer. One end of the protective cylinder is in threaded connection with a detonating cylinder, one end of the detonating cylinder is provided with a detonating cavity, a protective partition plate is further arranged between the detonating cylinder and the protective cylinder, an electric detonator is arranged in the detonating cavity, a protective cover is arranged on the surface of the protective cylinder, and the upper computer is electrically connected with each selective switch through a cable. And the selective switch is electrically connected with the electric detonator. The utility model relates to the technical field of oil and gas exploitation. According to the oil and gas well clustering perforation detonating device, the safety of the selective switch is guaranteed, the selective switch can be repeatedly used, and meanwhile the fault rate of the selective switch is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas exploitation, in particular to an oil and gas well cluster perforation detonation device. Background Art

[0002] When oil is being extracted, the oil well formation needs to be fractured first to form a pore structure so that oil can seep out. The perforator is a special device for perforating and fracture making in the oil industry. The perforating bullet is installed in the perforator. After being transported to the target layer, it is detonated by receiving the energy of the detonating cord. After the perforating bullet jet penetrates the perforator, it further penetrates the casing and concrete layer of the well wall, so that the formation is connected with the oil and gas well, and the formation oil and gas flow smoothly into the oil and gas well. The perforator needs to be used in conjunction with a trigger switch. In the publication number CN218780338U, a pump-driven directional perforating gun and a directional perforating gun string for oil and gas wells are disclosed. The selective firing switch and the bullet rack are set in the same cavity. After receiving the ignition command from the ground, the selective firing switch will trigger the detonator to ignite. After the detonator ignites the fuse to ignite the perforating bullet to complete the perforation, the selective firing switch in the same cavity will be damaged and cannot be reused, resulting in waste. Utility Model Content

[0003] In order to solve the above defects, the utility model provides an oil and gas well cluster perforation detonation device, which ensures the safety of the selective switch and can be reused, while effectively reducing the failure rate of the selective switch.

[0004] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is a cluster perforating blasting device for oil and gas wells, comprising a host computer, a selective switch and a protective tube, wherein at least one selective switch is provided, and the number of the protective tubes corresponds to the number of the selective switches, a receiving cavity is provided at one end of the protective tube, the selective switch is arranged in the receiving cavity, a detonating tube is threadedly connected to one end of the protective tube, a detonating cavity is provided at one end of the detonating tube, a protective partition is further provided between the detonating tube and the protective tube, an electric detonator is provided in the detonating cavity, a protective cover is provided on the surface of the protective tube, the host computer is electrically connected to each of the selective switches through a cable, and the selective switch is electrically connected to the electric detonator;

[0005] The selective switch includes a control main board, on which a micro-control circuit, a signal input-output circuit, a power supply circuit, an AC boost circuit and a detonator control circuit are arranged. The power supply circuit is electrically connected to the micro-control circuit, and the micro-control circuit is electrically connected to the signal input-output circuit, the AC boost circuit and the detonator control circuit respectively. The signal input-output circuit is electrically connected to a host computer, the AC boost circuit is electrically connected to the detonator control circuit, and the detonator control circuit is electrically connected to the electric detonators of the corresponding branches.

[0006] Preferably, the protective cover is threadedly connected or clamped to the protective tube, a first wire post penetrating the protective cover is provided on the surface of the protective cover, the first wire post is made of copper material, and an insulating layer is provided between the first wire post and the protective cover.

[0007] Preferably, a second wire post penetrating the protective partition is provided on the surface of the protective partition, the second wire post is made of copper material, an insulating layer is provided between the second wire post and the protective partition, and a through hole for passing the cable is provided on one side of the detonation chamber.

[0008] Preferably, a male connector is provided at one end of the detonating cylinder, and a female connector is provided at one end of the protective cylinder away from the detonating cylinder.

[0009] Preferably, it also includes cluster perforators, the number of which is equal to the number of selective switches, the selective switches are arranged at one end of the cluster perforators, a salvage device is arranged at one end of the selective switch at the tail, a sealing tool is arranged at one end of the salvage device, a bridge plug is arranged at one end of the sealing tool, and a magnetic locator is arranged at one end of the cluster perforators at the head.

[0010] Preferably, the salvage device comprises a connecting head, a surface of the connecting head is provided with a groove, a permanent magnet is provided in the groove, and a surface of the permanent magnet is provided with a groove.

[0011] The utility model adopts the above technical scheme, and the beneficial effects include: the oil and gas well cluster perforating and detonating device separates the selective switch from the detonating part by means of the provided protective tube and the detonating tube, thereby forming an independent space, thereby ensuring that the selective switch can be well protected during and after detonation, and achieving the purpose of reusing the selective switch; in addition, through the instructions sent from the upper computer to the selective switch, the detonator control circuit can be controlled by the microcontroller circuit to output a high-voltage ignition voltage on time, thereby achieving the purpose of igniting and detonating the perforator, and effectively reducing the failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the internal structure of the selector switch of the utility model;

[0014] Figure 3 This is the switch control schematic diagram selected for the utility model.

[0015] In the figure: 1-host computer, 2-selective switch, 3-protective tube, 4-accommodating chamber, 5-detonating tube, 6-detonating chamber, 7-protective partition, 8-electric detonator, 9-protective cover, 10-first wire column, 11-second wire column, 12-male connector, 13-female connector, 14-cluster perforator, 15-salvage device, 151-connector, 152-permanent magnet, 16-sealing tool, 17-bridge plug, 18-magnetic positioner. DETAILED DESCRIPTION

[0016] The utility model is further described below in conjunction with the accompanying drawings.

[0017] Example 1: Please refer to Figure 1-3 The utility model provides a technical solution: an oil and gas well cluster perforating blasting device, comprising an upper computer 1, a selective switch 2 and a protective tube 3, the upper computer 1 is arranged on the ground, at least one selective switch 2 is arranged, the number of protective tubes 3 corresponds to the number of selective switches 2, one end of the protective tube 3 is provided with a receiving cavity 4, the selective switch 2 is arranged in the receiving cavity 4, and can be fixed by screws, one end of the protective tube 3 is threadedly connected with a detonating tube 5, the protective tube 3 and the detonating tube 5 are made of metal materials to ensure that their surfaces are not damaged or deformed during detonation, and in order to improve the sealing performance, a protective tube 3 and the detonating tube 5 are provided between the protective tube 3 and the detonating tube 5. A sealing ring is arranged between the detonating tube 5; a detonating chamber 6 is arranged at one end of the detonating tube 5, a protective partition 7 is also arranged between the detonating tube 5 and the protective tube 3, an electric detonator 8 is arranged in the detonating chamber 6, a protective cover 9 is arranged on the surface of the protective tube 3, the upper computer 1 is electrically connected to each selective switch 2 through a cable, the selective switch 2 is electrically connected to the electric detonator 8, the protective cover 9 is used to pass the cable connecting the upper computer 1 and the selective switch 2, a sealing ring is arranged between the protective cover 9 and the protective tube 3, and the selective switch is independently isolated by the arranged accommodating chamber 4, which ensures that it is not damaged during and after detonation, thereby achieving the purpose of reuse.

[0018] The selective switch 2 includes a control main board, on which a micro-control circuit, a signal input and output circuit, a power supply circuit, an AC boost circuit and a detonator control circuit are arranged. The power supply circuit is electrically connected to the micro-control circuit to supply power to each circuit. The micro-control circuit is electrically connected to the signal input and output circuit, the AC boost circuit and the detonator control circuit respectively. The signal input and output circuit is electrically connected to a host computer. The AC boost circuit is electrically connected to the detonator control circuit. The detonator control circuit is electrically connected to the electric detonators of the corresponding branches.

[0019] The electrical signal transmitted by the external host computer and the communication signal of the external host computer are connected through the signal input and output circuit, the voltage required for normal operation is provided by the power supply circuit, and the communication signal is transmitted to the micro-control circuit by the signal input and output circuit, and the AC boost circuit and the detonator control circuit are realized by the micro-control circuit, and then the AC boost circuit and the detonator control circuit are used to control and protect the detonation of the electric detonators of the corresponding branches, wherein the circuit structure of each circuit adopts the relevant circuit structure in the prior art;

[0020] When ignition is required, the host computer sends a command, and the micro-control circuit outputs a boost start signal to the AC boost circuit, causing the AC boost circuit to output high-voltage AC power, and outputs a high-level signal or a low-level signal to the detonator control circuit, causing the detonator control circuit to output a negative ignition voltage or a positive ignition voltage; when ignition is not required, the micro-control circuit stops outputting the boost start signal to the AC boost circuit, causing the AC boost circuit and the detonator control circuit to have no AC output, making it impossible to ignite and perforate, thereby achieving the purpose of ignition and detonation.

[0021] The protective cover 9 is threadedly or clamped with the protective tube 3. The surface of the protective cover 9 is provided with a first wire post 10 that passes through the protective cover 9. The first wire post 10 is made of copper material. An insulating layer is provided between the first wire post 10 and the protective cover 9. The insulating layer can be made of ceramic material. The first wire post 10 is used to avoid the cable passing through the protective cover 9. It is only necessary to connect the cable to the two ends of the first wire post 10. This avoids the need to set a threading hole on the surface of the protective cover 9 and improves the sealing performance.

[0022] The surface of the protective partition 7 is provided with a second wire post 11 that passes through the protective partition 7. The two ends of the second wire post 11 are connected to the cables between the selective switch and the electric detonator. Similarly, the provision of a wire hole in the protective partition 7 is avoided, the sealing is improved, and thus the protection of the selective switch 2 is improved.

[0023] The second conductor post 11 is made of copper material. An insulating layer is provided between the second conductor post 11 and the protective partition 7. The insulating layer can be made of ceramic material. A through hole for passing the cable is provided on one side of the detonation chamber 6.

[0024] A male connector 12 is provided at one end of the detonating tube 5, and a female connector 13 is provided at one end of the protective tube 3 away from the detonating tube 5, so as to facilitate connection with a perforator or other pipe fittings.

[0025] The invention also includes cluster perforators 14, the number of which is equal to the number of the selective switches 2, the selective switches 2 are arranged at one end of the cluster perforators 14, a salvage device 15 is arranged at one end of the tail selective switch 2, a sealing tool 16 is arranged at one end of the salvage device 15, a bridge plug 17 is arranged at one end of the sealing tool 16, a magnetic positioner 18 is arranged at one end of the head cluster perforator 14, the magnetic positioner 18 can accurately locate the position where the perforator is lowered to ensure the accuracy of perforation, the bridge plug 17 is used to isolate the wellbore and the lower layer perforation part, so that the oil well formation can be perforated in sections without affecting each other, and the sealing tool 16 connected to the bridge plug 17 can provide power for the sealing of the bridge plug 17.

[0026] The salvage device 15 effectively collects shell casings and cartridge rack debris of different sizes generated by perforating in the horizontal wellbore during the transportation process of the perforating pipe string, thereby preventing the perforating gun barrel from getting stuck underground and effectively improving the construction quality and safety. The salvage device 15 includes a connector 151, a surface of the connector 151 is provided with a groove, a permanent magnet 152 is provided in the groove, and a surface of the permanent magnet 152 is provided with a groove, and the collected debris is stored in the groove on the surface of the permanent magnet 152.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0028] The above description is only a preferred embodiment of the prior art type of fixing and installation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A cluster perforation blasting device for oil and gas wells, comprising a host computer (1), a selective perforation switch (2) and a protective tube (3), characterized in that: At least one selective switch (2) is provided, the number of the protective tube (3) corresponds to the number of the selective switches (2), one end of the protective tube (3) is provided with a receiving chamber (4), the selective switch (2) is arranged in the receiving chamber (4), one end of the protective tube (3) is threadedly connected with a detonating tube (5), one end of the detonating tube (5) is provided with a detonating chamber (6), a protective partition (7) is further provided between the detonating tube (5) and the protective tube (3), an electric detonator (8) is provided in the detonating chamber (6), a protective cover (9) is provided on the surface of the protective tube (3), the upper computer (1) is electrically connected to each of the selective switches (2) through a cable, and the selective switch (2) is electrically connected to the electric detonator (8); The selective firing switch (2) comprises a control mainboard, on which a microcontrol circuit, a signal input / output circuit, a power supply circuit, an AC boost circuit and a detonator control circuit are arranged, the power supply circuit is electrically connected to the microcontrol circuit, the microcontrol circuit is electrically connected to the signal input / output circuit, the AC boost circuit and the detonator control circuit respectively, the signal input / output circuit is electrically connected to a host computer, the AC boost circuit is electrically connected to the detonator control circuit, and the detonator control circuit is electrically connected to the electric detonators of the corresponding branches.

2. The cluster perforation detonation device for oil and gas wells according to claim 1, characterized in that: The protective cover (9) is threadedly connected or clamped to the protective tube (3); a first conductive post (10) penetrating the protective cover (9) is provided on the surface of the protective cover (9); the first conductive post (10) is made of copper material; an insulating layer is provided between the first conductive post (10) and the protective cover (9).

3. The cluster perforation detonation device for oil and gas wells according to claim 1, characterized in that: A second conductor post (11) penetrating the protective baffle (7) is arranged on the surface of the protective baffle (7); the second conductor post (11) is made of copper material; an insulating layer is arranged between the second conductor post (11) and the protective baffle (7); and a through hole for passing a cable is arranged on one side of the detonation chamber (6).

4. The cluster perforation detonation device for oil and gas wells according to claim 1, characterized in that: One end of the detonating tube (5) is provided with a male connector (12), and one end of the protective tube (3) away from the detonating tube (5) is provided with a female connector (13).

5. The cluster perforation detonation device for oil and gas wells according to claim 1, characterized in that: It also comprises cluster perforators (14), the number of the cluster perforators (14) is equal to the number of the selective switches (2), the selective switches (2) are arranged at one end of the cluster perforators (14), a salvage device (15) is arranged at one end of the selective switches (2) at the tail, a sealing tool (16) is arranged at one end of the salvage device (15), a bridge plug (17) is arranged at one end of the sealing tool (16), and a magnetic locator (18) is arranged at one end of the cluster perforators (14) at the head.

6. The cluster perforation detonation device for oil and gas wells according to claim 5, characterized in that: The salvage device (15) comprises a connecting head (151), a surface of the connecting head (151) is provided with a groove, a permanent magnet (152) is provided in the groove, and a surface of the permanent magnet (152) is provided with a groove.

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