Shock-resistant large-resistance temperature-resistant oil-gas well perforation detonation electric detonator

Abstract

The utility model discloses an anti-seismic large-resistance temperature-resistant oil-gas well perforation detonation electric detonator, and relates to a civil blasting detonator. Two-pole rigid electrode plates (3) are supported at the bottom of a PVB plate (2) of the detonator, an avoiding opening is reserved in the middle of the PVB plate (2), the two ends of an igniter wire (4) are connected with the avoiding opening in a bridging mode and welded to the two rigid electrode plates (3) supported by the PVB plate (2) respectively, and the periphery of the igniter wire (4) and the interior of the avoiding opening are coated with ignition powder in a dipping mode; the PVB plate (2) and the rigid electrode plate (3) are arranged in a supporting and damping mode, the bridge wire (4) and the ignition head (5) play a role in centralizing, curing and shaping, and the ignition head (5) is sleeved with the silica gel sleeve (6) and connected with a bayonet of a basic detonator (8) with a label (7) in a pinching mode. And the underground cable is communicated with the two wires. When the ends of the two wires are connected and electrified by an underground cable, the normal detonation of the product in the underground strong vibration and shock wave environment is completed, and the breaking and falling of the ignition charge head and the fracture of the igniter wire are avoided.

Description

Technical Field

[0001] The utility model relates to a civilian blasting detonator, in particular to a shock-resistant large-resistance and temperature-resistant oil and gas well perforation detonating electric detonator. Background Art

[0002] At present, the core component of the high-resistance structure heat-resistant electric detonator used in domestic and foreign oil and gas well perforation operations is an integrated plug, which is basically composed of two large resistors. The internal structure of the integrated plug is to weld the double-leg wire at one end of the resistor to the wire, and then inject the resistor and the welding point into the integrated plug; the double-leg wire at the other end leads out of the integrated plug to make a ignition head.

[0003] Due to the perforating operations in oil and gas wells thousands of meters deep, the blasting environment is subject to interference such as high temperature and high pressure, strong vibration wave impact, stray current, static electricity and radio frequency induced electricity. The large resistance products currently used have misfire problems such as ignition head breakage, falling off and bridge wire breakage caused by strong vibration during the underground construction process, which poses a problem to the ignition reliability of the product. Summary of the invention

[0004] The purpose of the utility model is to provide a shock-resistant, high-resistance, and temperature-resistant oil and gas well perforating detonator. The utility model has a structural design in which two wire ends and two chip resistors are respectively welded to the lower end of a PVB board, and the wire welding points and the chip resistors are injection-molded in an integrated plug, so as to achieve the purpose of inserting the integrated plug into the base detonator and then locking it. When the downhole cable energizes the two wires, the product can be normally detonated in a strong vibration and shock wave environment downhole, thus avoiding misfire problems such as the breakage and shedding of the ignition head and the breakage of the bridge wire.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A seismic-resistant, high-resistance, and temperature-resistant oil and gas well perforating detonating electric detonator, the detonating electric detonator comprising a body plug, a PVB board, a rigid electrode sheet, a bridge wire, an ignition charge head, a silicone sleeve, a label, and a basic detonator; the PVB board supports the two-pole rigid electrode sheets at the bottom, a avoidance opening is left in the middle of the PVB board, the bridge wire bridges the two ends of the avoidance opening and is respectively welded to the two rigid electrode sheets supported by the PVB board, and the ignition charge is dipped and coated around the bridge wire and in the avoidance opening; the PVB board and the rigid electrode sheet are supported and shock-absorbing, the bridge wire and the ignition charge head are used for straightening and solidification and shaping, the ignition charge head is covered with a silicone sleeve and is clamped with the base detonator with a label; the downhole cable is connected to the two conductors.

[0007] The described earthquake-resistant, high-resistance, and temperature-resistant oil and gas well perforation detonator has the PVB plate arranged at the bottom to support the bipolar rigid electrode sheets.

[0008] The earthquake-resistant, high-resistance, and temperature-resistant oil and gas well perforation detonator, the two wire ends and the two chip resistors are respectively welded to the lower end of the PVB board.

[0009] The described earthquake-resistant, high-resistance, and temperature-resistant oil and gas well perforation detonating electric detonator has the described wire welding points and the chip resistors injection-molded inside the body plug.

[0010] The advantages and effects of the utility model are:

[0011] The utility model improves the underground ignition reliability of the high-resistance structure heat-resistant electric detonator and eliminates the misfire problem caused by strong vibration underground. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structural composition of the utility model.

[0013] Components in the figure: body plug 1, PVB board 2, rigid electrode sheet 3, bridge wire 4, ignition head 5, silicone sleeve 6, label 7, basic detonator 8. DETAILED DESCRIPTION

[0014] The utility model is described in detail below in conjunction with the embodiments shown in the accompanying drawings.

[0015] The two wire ends and two chip resistors of the utility model are welded to the lower end of the PVB board respectively. The two chip resistors play a role in resisting stray lightning current underground. The wire welding points and the chip resistors are injection molded in an integrated plug. After the integrated plug is inserted into the basic detonator, it is snapped in. The rigid electrode sheet is fixed on the top of the PVB board, and a avoidance is left in the middle of the PVB board. The bridge wire is connected to the avoidance and welded to the rigid electrode sheets at both ends respectively. The bridge wire is tightly wrapped with ignition powder, and the ignition powder is fully applied in the avoidance. The ignition component is dipped in moisture-proof paint and then covered with a silicone sleeve to form a complete ignition component. After snapping in with the basic detonator, the product assembly is completed and applied on site for axial or lateral detonation of the detonating cord. Example

[0016] The utility model discloses a shock-resistant, high-resistance, and heat-resistant oil and gas well perforation detonator, comprising a body plug 1, a PVB board 2, a rigid electrode sheet 3, a bridge wire 4, an ignition charge head 5, a silicone sleeve 6, a label 7, and a basic detonator 8. The integrated plug structure of the ignition component is designed to be a structural form in which the PVB board 2 supports the two-pole rigid electrode sheets 3 at the bottom, and a avoidance opening is left in the middle position of the PVB board 2. The bridge wire 4 is connected across the two ends of the avoidance opening and is respectively welded on the two rigid electrode sheets 3 supported by the PVB board 2, and the ignition charge is dipped and coated around the bridge wire and in the avoidance opening. In the strong vibration and strong impact environment underground, the PVB board 2 plays a role in shock absorption, support and protection for the rigid electrode sheet 3, and plays a good role in straightening and solidifying the bridge wire 4 and the ignition charge head 5, avoiding the phenomenon of the ignition charge head 5 being broken, falling off, and the bridge wire 4 being broken to cause misfire, etc. After the ignition charge head 5 is covered with the silicone sleeve 6, it is clamped with the basic detonator 8 with the label 7. The rigid electrode sheet 3 is fixed on the PVB board 2 led out of the body plug 1 through injection molding. The circuit connection in the PVB board 2 connects the two wires to the two electrodes of the rigid electrode sheet 3. A avoidance is left in the middle of the PVB board 2 where the rigid electrode is fixed. The bridge wire 4 is connected across the avoidance and welded to the two poles of the rigid electrode sheet, and the overall circuit forms a loop. The ignition head 5 is dipped on the bridge wire, and after drying, the silicone sleeve 6 is put on, and the basic detonator 8 with the label 7 is connected by a bayonet.

[0017] The working process of the utility model is: when the underground cable is connected to the two wire ends and energized, the product is detonated normally under the strong vibration and shock wave environment underground. The two wires are used as the input electrodes for the product detonation. After energization, the bridge wire heats up and ignites the ignition charge, and finally the basic detonator is detonated.

Claims

1. A seismic-resistant, high-resistance, and temperature-resistant oil and gas well perforation detonator, characterized in that: The detonating electric detonator comprises a body plug (1), a PVB board (2), a rigid electrode sheet (3), a bridge wire (4), an ignition charge head (5), a silicone sleeve (6), a label (7), and a basic detonator (8); the PVB board (2) supports the two-pole rigid electrode sheets (3) at the bottom, a avoidance opening is left in the middle of the PVB board (2), the bridge wire (4) bridges across the avoidance opening and is respectively welded to the two rigid electrode sheets (3) supported by the PVB board (2), and the ignition charge is dipped and coated around the bridge wire (4) and in the avoidance opening; the PVB board (2) and the rigid electrode sheet (3) are provided for support and shock absorption, the bridge wire (4) and the ignition charge head (5) are provided for straightening and solidification, the ignition charge head (5) is covered with a silicone sleeve (6) and is connected to the basic detonator (8) with the label (7) by a bayonet; and the downhole cable is connected to the two conductors.

2. The earthquake-resistant, high-resistance, and temperature-resistant oil and gas well perforation detonator according to claim 1 is characterized in that: The PVB plate (2) is arranged at the bottom to support the bipolar rigid electrode sheets (3).

3. The earthquake-resistant, high-resistance, and temperature-resistant oil and gas well perforation detonator according to claim 1 is characterized in that: The two wire ends and the two chip resistors are respectively welded to the lower end of the PVB board (2).

4. The earthquake-resistant, high-resistance, and temperature-resistant oil and gas well perforation detonator according to claim 1 is characterized in that: The wire soldering points and the chip resistors are injection molded inside the body plug (1).

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