Ignition and detonation device for oil and gas wells

Abstract

The utility model discloses a kind of ignition detonation devices for oil and gas well, belong to oil and gas well technical field, including connecting frame, the side fixed connection of connecting frame has cluster perforator.This utility model, since honeycomb board inside is porous honeycomb structure, can collapse deformation along multiple directions when being compressed, further effectively absorb and dissipate most of the impact energy generated by blasting, reduce its transmission amplitude to rear structure (such as selected emission switch), after completing blasting operation, operator can pass through the structure of rotary baffle and energy-absorbing plate, further drive and the threaded sleeve that it is connected with penetration fixed threaded rod rotationally to produce rotationally separates, make whole energy-absorbing module realize quick decomposition and disassembly, by this rotatable structure form, not only improve the maintainability of device, also avoid the problem that traditional protective plate structure is difficult to reuse due to deformation, further realize the effective protection and structural reuse of selected emission switch.

Description

Technical Field

[0001] This utility model belongs to the field of oil and gas well technology, and in particular relates to an ignition and detonation device for oil and gas wells. Background Technology

[0002] In perforation operations at oil and gas wells, the ignition and detonation device is a key structure used to detonate the perforating projectile to achieve wellbore penetration and formation communication. It typically includes a selector switch, an electric detonator, and a connecting cylinder.

[0003] Existing technologies disclose several utility model patents in the field of oil and gas well technology. Among them, utility model patent application number CN222315117U discloses an oil and gas well cluster perforation initiation device. Its basic description is as follows: This utility model discloses an oil and gas well cluster perforation initiation device, including a host computer, a selective firing switch, and a protective cylinder. At least one selective firing switch is provided, and the number of protective cylinders corresponds to the number of selective firing switches. One end of the protective cylinder is provided with a receiving cavity, and the selective firing switch is placed in the receiving cavity. One end of the protective cylinder is threadedly connected to a detonator, and one end of the detonator is provided with a detonation cavity. A protective partition is also provided between the detonator and the protective cylinder. An electric detonator is placed in the detonation cavity. A protective cover is provided on the surface of the protective cylinder. The host computer is electrically connected to each selective firing switch via a cable, and the selective firing switch is electrically connected to the electric detonator. This utility model relates to the field of oil and gas extraction technology. This type of oil and gas well cluster perforation initiation device ensures the safety of the selective firing switch, is reusable, and effectively reduces the failure rate of the selective firing switch.

[0004] In existing technologies, selective firing switches are mostly located inside the protective cylinder and isolated from the blast area by a single baffle or partition. However, in high-energy detonation environments, the impact force generated by the explosion can easily be transmitted along the cylinder to the selective firing switch, causing it to be damaged or fail, affecting subsequent perforation control operations. At the same time, some protective structures lack effective energy absorption mechanisms and rely solely on rigid isolation elements to absorb the blast impact, making them prone to deformation or even scrapping after a single operation, resulting in short service life and poor reusability. Furthermore, during the explosion, the shock wave exerts a strong thrust on the protective structure. Without a reasonable buffering and guiding mechanism, the impact energy will be concentrated on a single point of the structure, easily causing misalignment of internal components, breakage of wires, or damage to the internal cavity sealing structure, further affecting system safety.

[0005] Based on this, this utility model designs an ignition and detonation device for oil and gas wells to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to address the problem that in the prior art, the selective firing switch is mostly located inside the protective cylinder and isolated from the explosion area by a single baffle or partition. However, in a high-energy detonation environment, the impact force generated by the explosion is easily transmitted along the cylinder to the selective firing switch, causing it to be damaged or its performance to fail, thus affecting subsequent perforation control operations. Therefore, this invention proposes an ignition and detonation device for oil and gas wells.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An ignition and detonation device for oil and gas wells includes a connecting frame, a cluster perforator fixedly connected to one side of the connecting frame, a protective cylinder fixedly connected to one side of the cluster perforator, a detonating cylinder fixedly connected to one side of the protective cylinder, an electric detonator installed inside the detonating cylinder, and a wire installed inside the electric detonator.

[0009] An energy-absorbing device is installed inside a protective cylinder, and an auxiliary device is installed on one side of the energy-absorbing device. The energy-absorbing device includes a baffle and an energy-absorbing plate, and the energy-absorbing plate is configured as a honeycomb plate for energy absorption.

[0010] As a further description of the above technical solution:

[0011] The energy-absorbing device also includes a threaded sleeve and a buffer plate. The threaded sleeve is connected through the energy-absorbing plate, and a threaded rod is threadedly connected inside the threaded sleeve. The buffer plate is clamped inside the protective cylinder, and the threaded rod is fixedly connected to one side of the buffer plate.

[0012] As a further description of the above technical solution:

[0013] The wire runs through and connects the baffle, energy-absorbing plate, and buffer plate.

[0014] As a further description of the above technical solution:

[0015] The protective cylinder has two sliding grooves, and sliders are slidably connected in the sliding grooves. The two sliders are symmetrically installed on the outside of the buffer plate.

[0016] As a further description of the above technical solution:

[0017] The auxiliary device includes a telescopic rod and a limiting plate. The limiting plate is fixedly connected inside the protective cylinder, and the telescopic rod is fixedly connected to one side of the limiting plate.

[0018] As a further description of the above technical solution:

[0019] The telescopic end of the telescopic rod is fixedly connected to one side of the buffer plate, and a return spring is provided on the outer sleeve of the telescopic rod.

[0020] As a further description of the above technical solution:

[0021] One end of the pull-back spring is fixedly connected to the outside of the limiting plate, and the other end of the pull-back spring is fixedly connected to the outside of the buffer plate.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0023] 1. In this utility model, when the electric detonator explodes, the shock wave first acts on the baffle, which is pushed into the protective cylinder, and then applies a continuous thrust to the honeycomb energy-absorbing plate set behind it. Since the honeycomb plate has a porous honeycomb structure, it can collapse and deform in multiple directions when compressed, thereby effectively absorbing and dissipating most of the impact energy generated by the explosion, reducing the amplitude of its transmission to the downstream structure (such as the selective firing switch). After the blasting operation is completed, the operator can rotate the structure of the baffle and the energy-absorbing plate, thereby driving the threaded sleeve connected to it to rotate and detach from the fixed threaded rod, so that the entire energy-absorbing module can be quickly disassembled and disassembled. Through this rotatable detachable structure, not only is the maintainability of the device improved, but the problem of traditional protective plate structures being difficult to reuse due to deformation is also avoided, thereby achieving effective protection of the selective firing switch and structural reuse.

[0024] 2. In this utility model, after the impact force generated by the explosion is transmitted sequentially through the baffle and the energy-absorbing plate, it will continue to push the buffer plate set behind it. During this process, the buffer plate drives the sliders symmetrically arranged on both sides to slide backward in the two grooves opened in the inner wall of the protective cylinder, realizing the linear guidance and dispersion of the impact force. During the sliding process, the telescopic rod connected to one side of the buffer plate is compressed, and at the same time, the return spring sleeved on its outside is also compressed and stored energy. After the impact force disappears, the return spring releases the rebound force, causing the buffer plate to return to the initial position, completing the automatic reset of the buffer plate and the energy-absorbing component. This structure, through the combined action of the sliding guide of the groove and the energy storage and release mechanism of the spring, not only buffers the residual impact force, but also avoids the problem of structural misalignment and jamming due to impact, thus improving the impact resistance and recovery performance of the entire device. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of an ignition and detonation device for oil and gas wells proposed in this utility model;

[0026] Figure 2 This is a three-dimensional cross-sectional structural diagram of the protective cylinder of an ignition and detonation device for oil and gas wells proposed in this utility model.

[0027] Figure 3 This is a three-dimensional structural diagram of the energy-absorbing device of an ignition and detonation device for oil and gas wells proposed in this utility model;

[0028] Figure 4 This utility model proposes an ignition and detonation device for oil and gas wells. Figure 3 Enlarged structural diagram of part A in the middle;

[0029] Legend:

[0030] 1. Connecting frame; 2. Cluster perforator; 3. Protective tube; 4. Detonator; 5. Electric detonator; 6. Selective firing switch; 7. Wire; 8. Energy absorption device; 801. Baffle; 802. Energy absorption plate; 803. Threaded sleeve; 804. Threaded rod; 805. Buffer plate; 806. Slide groove; 807. Sliding block; 9. Auxiliary device; 901. Telescopic rod; 902. Limiting plate; 903. Pull-back spring. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figures 1-4 ;

[0033] First embodiment:

[0034] This utility model provides a technical solution: an ignition and detonation device for oil and gas wells, including a connecting frame 1, a cluster perforator 2 fixedly connected to one side of the connecting frame 1, a protective cylinder 3 fixedly connected to one side of the cluster perforator 2, a detonating cylinder 4 fixedly connected to one side of the protective cylinder 3, an electric detonator 5 installed inside the detonating cylinder 4, and a wire 7 installed inside the electric detonator 5.

[0035] An energy-absorbing device 8 is installed inside the protective cylinder 3, and an auxiliary device 9 is installed on one side of the energy-absorbing device 8. The energy-absorbing device 8 includes a baffle 801 and an energy-absorbing plate 802, and the energy-absorbing plate 802 is configured as a honeycomb plate for energy absorption.

[0036] Specifically, such as Figure 2-3As shown, the energy-absorbing device 8 also includes a threaded sleeve 803 and a buffer plate 805. The threaded sleeve 803 is connected through the energy-absorbing plate 802, and a threaded rod 804 is threadedly connected inside the threaded sleeve 803. The buffer plate 805 is clamped inside the protective cylinder 3, and the threaded rod 804 is fixedly connected to one side of the buffer plate 805. The threaded sleeve 803 is installed through the honeycomb-shaped energy-absorbing plate 802 and is connected to the threaded rod 804 through its internal thread. After the explosion, the threaded sleeve 803 can be disassembled by rotating the energy-absorbing plate 802. This structure not only makes the energy-absorbing plate 802 stable and prevents it from falling off during the detonation process, but also realizes the modular and detachable structure of the energy-absorbing device 8 by using threaded transmission, which facilitates the quick replacement of energy-absorbing elements and improves the maintenance efficiency and reusability of the entire device.

[0037] The conductor 7 runs through the baffle 801, energy-absorbing plate 802, and buffer plate 805. Two grooves 806 are formed inside the protective cylinder 3, with sliders 807 slidably connected within each groove. The two sliders 807 are symmetrically mounted on the outside of the buffer plate 805. One end of the threaded rod 804 is fixedly connected to the buffer plate 805, and the other end is threaded to a threaded sleeve 803, reliably linking the buffer plate 805 with the front energy-absorbing device 8. This mating structure allows the buffer plate 805 to be completely separated from the energy-absorbing plate 802 after an explosive impact by rotating the thread, facilitating replacement or inspection of the energy-absorbing components. Furthermore, the threaded connection has a slightly adjustable characteristic, allowing for fine-tuning of the clamping force during assembly, enhancing structural reliability.

[0038] During operation, when the electric detonator 5 explodes, the shock wave first acts on the baffle 801, pushing the baffle 801 into the protective cylinder 3, and then applying a continuous thrust to the honeycomb energy-absorbing plate 802 located behind it. Since the honeycomb plate has a porous honeycomb structure, it can collapse and deform in multiple directions when compressed, thus effectively absorbing and dissipating most of the impact energy generated by the explosion, reducing the amplitude of its transmission to the subsequent structure (such as the selective firing switch 6). After the blasting operation is completed, the operator can rotate the structure of the baffle 801 and the energy-absorbing plate 802, thereby driving the threaded sleeve 803 connected to it to rotate and detach from the fixed threaded rod 804, so that the entire energy-absorbing module can be quickly disassembled and disassembled. Through this rotatable detachable structure, not only is the maintainability of the device improved, but the problem of traditional protective plate structures being difficult to reuse due to deformation is also avoided, thus achieving effective protection of the selective firing switch 6 and structural reuse.

[0039] Second embodiment:

[0040] Specifically, such as Figure 3-4As shown, the auxiliary device 9 includes a telescopic rod 901 and a limiting plate 902. The limiting plate 902 is fixedly connected inside the protective cylinder 3. The telescopic rod 901 is fixedly connected to one side of the limiting plate 902. The telescopic end of the telescopic rod 901 is fixedly connected to one side of the buffer plate 805. A return spring 903 is sleeved on the telescopic rod 901. One end of the return spring 903 is fixedly connected to the outside of the limiting plate 902, and the other end of the return spring 903 is fixedly connected to the outside of the buffer plate 805. A sliding fit is formed between the slider 807 and the slide groove 806, which can effectively limit the movement trajectory of the buffer plate 805 and prevent it from non-axial shaking or jamming during the explosion impact. The length of the slide groove 806 can be set according to the impact amplitude, so that the slider 807 has the dual functions of limiting and guiding during movement. With the subsequent spring reset structure, the rebound accuracy and service life of the buffer plate 805 can be improved.

[0041] During operation, the impact force generated by the explosion is transmitted sequentially through the baffle 801 and the energy-absorbing plate 802, and then continues to push the buffer plate 805 located at the rear. During this process, the buffer plate 805 drives the sliders 807 symmetrically arranged on both sides to slide backward in the two grooves 806 opened in the inner wall of the protective cylinder 3, realizing the linear guidance and dispersion of the impact force. During the sliding process, the telescopic rod 901 connected to one side of the buffer plate 805 is compressed, and the return spring 903 sleeved on the outside is also compressed and stores energy. After the impact force disappears, the return spring 903 releases its rebound force, causing the buffer plate 805 to return to its initial position, completing the automatic reset of the buffer plate 805 and the energy-absorbing component. This structure, through the combined action of the sliding guidance of the grooves 806 and the energy storage and release mechanism of the spring, not only buffers the residual impact force, but also avoids the problem of structural misalignment and jamming due to impact, thus improving the impact resistance and recovery performance of the entire device.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An ignition and detonation device for oil and gas wells, comprising a connecting frame (1), characterized in that, A cluster perforator (2) is fixedly connected to one side of the connecting frame (1), a protective cylinder (3) is fixedly connected to one side of the cluster perforator (2), a detonator (4) is fixedly connected to one side of the protective cylinder (3), an electric detonator (5) is installed inside the detonator (4), and a wire (7) is installed inside the electric detonator (5). An energy-absorbing device (8) is installed inside the protective cylinder (3), and an auxiliary device (9) is installed on one side of the energy-absorbing device (8). The energy-absorbing device (8) includes a baffle (801) and an energy-absorbing plate (802). The energy-absorbing plate (802) is configured as a honeycomb plate for energy absorption.

2. The ignition and detonation device for oil and gas wells according to claim 1, characterized in that, The energy-absorbing device (8) further includes a threaded sleeve (803) and a buffer plate (805). The threaded sleeve (803) is connected through the energy-absorbing plate (802). A threaded rod (804) is threadedly connected inside the threaded sleeve (803). The buffer plate (805) is clamped inside the protective cylinder (3). The threaded rod (804) is fixedly connected to one side of the buffer plate (805).

3. The ignition and detonation device for oil and gas wells according to claim 2, characterized in that, The wire (7) passes through and connects the baffle (801), the energy-absorbing plate (802), and the buffer plate (805).

4. The ignition and detonation device for oil and gas wells according to claim 2, characterized in that, The protective cylinder (3) has two grooves (806) inside, and a slider (807) is slidably connected in the groove (806). The two sliders (807) are symmetrically installed outside the buffer plate (805).

5. The ignition and detonation device for oil and gas wells according to claim 2, characterized in that, The auxiliary device (9) includes a telescopic rod (901) and a limiting plate (902). The limiting plate (902) is fixedly connected inside the protective cylinder (3), and the telescopic rod (901) is fixedly connected to one side of the limiting plate (902).

6. The ignition and detonation device for oil and gas wells according to claim 5, characterized in that, The telescopic end of the telescopic rod (901) is fixedly connected to one side of the buffer plate (805), and a pull spring (903) is provided on the outer sleeve of the telescopic rod (901).

7. The ignition and detonation device for oil and gas wells according to claim 6, characterized in that, One end of the pull-back spring (903) is fixedly connected to the outside of the limiting plate (902), and the other end of the pull-back spring (903) is fixedly connected to the outside of the buffer plate (805).

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