CN218439330U - On-site zero wiring device of perforating gun - Google Patents

Abstract

The utility model discloses an on-site zero wiring device of a perforating gun, which comprises at least two detonator fixing grooves, wherein zero wiring electric conduction is completed by clamping an A conductive copper ring and a B conductive copper ring respectively; the circuit board fixed slot is provided with two at least buckle structures, and the circuit board fixed slot passes through buckle structure electricity and connects and the fixed switch of selecting to send. An electric connecting lead between the detonator fixing groove and the circuit board fixing groove is prefabricated; the utility model discloses a buckle structure realizes the electricity and connects, and wiring when having avoided the field installation has improved the installation effectiveness greatly, reduces the error rate of wiring.

Description

On-site zero wiring device of perforating gun

Technical Field

The utility model relates to an oil gas exploitation bridging plug and perforation intelligent control technical field especially relate to a zero termination in scene of perforation rifle.

Background

In the oil and gas exploitation process, usually, after drilling, a casing is put in, cement is injected for well cementation, and after well cementation, a connecting passage between an oil and gas reservoir and the casing is opened through perforation and fracturing operations. The bridge plug and perforation are combined to be the most widely used perforation completion mode for developing unconventional oil and gas reservoirs, and the single well yield can be effectively improved.

The perforating string carries a plurality of perforating guns lowered into the cased hole and remains in place in one or more hydrocarbon reservoirs in the subterranean formation. The perforating gun is internally provided with the shaped perforating bullet, and the shaped perforating bullet can sequentially penetrate through a perforating gun barrel, a sleeve and a cement pouring layer after being detonated, so that hydrocarbon can flow into the sleeve. Once the gun reaches the specified location, the surface instrumentation issues an ignition signal, the kill-switch initiates the detonator within the gun, and in turn, the detonating cord, which detonates the shaped charge to pierce the barrel, casing, and cement layer, thereby allowing formation fluids to flow into the production string.

The assembly of a perforating gun requires the assembly of multiple parts, typically including at least the following: the perforating gun comprises a gun barrel, a bullet frame, a wired detonator, a fuse, a shaped charge, a selective firing switch, an intermediate joint and a pressure-bearing wire passing device, wherein at least two conducting wires are required to be manually connected between the wired detonator and the selective firing switch, at least one conducting wire is required to be connected between the selective firing switch and the selective firing switch in the next-stage perforating gun assembly, at least one wire is required to be connected between the selective firing switch and the bullet frame, and at least one conducting wire is required to be connected between the selective firing switch and the pressure-bearing wire passing device. The barrels are connected with each other through the intermediate joint, relative rotation movement is needed during connection, and the situation that wires are wound, knotted or even broken frequently occurs when one part is inserted into the other part in a threaded mode. In addition, when wired detonators are used, they must be manually connected to electrical wiring, which causes a number of problems. As the parts are rotationally assembled, the wiring may wear, kink, crease or crack, and manual wiring is prone to rework.

SUMMERY OF THE UTILITY MODEL

The utility model provides a solve above-mentioned problem, provide a zero termination in scene of perforating gun, provide a detonator conducting ring and electrically conductive groove to the switch installation of will selecting to send to insulating fixed slot in, accomplished all wiring operations in the mill. And field zero wiring is realized. Many faults introduced by wiring are avoided.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a field zero wiring device of a perforating gun comprises a detonator, a detonator clamping cylinder and a cartridge frame pipe, wherein the detonator clamping cylinder is used for mounting the detonator;

the detonator clamping cylinder is of a tubular hollow cylinder structure and comprises a wiring terminal A, a wiring terminal B, a conductive copper ring A and a conductive copper ring B; the wiring terminal A and the wiring terminal B are elastic clamping structures, and the conductive copper ring A and the conductive copper ring B are arranged outside the detonator clamping cylinder; the wiring terminal A is connected with the conductive copper ring A through a wire, and the wiring terminal B is connected with the conductive copper ring B through a wire; the ground wire of the detonator is fixed on the binding post A through the clamping structure, and the detonating cord is fixed on the binding post B through the clamping structure;

the wiring assembly comprises an intermediate joint, a conductive contact clamping groove, an insulation box, a through wire for supplying power and a selective switch for a selective control circuit, the wiring assembly for insulation and support functions is fixed in a cartridge frame tube, the wiring assembly is provided with a detonator fixing groove and a circuit board fixing groove, the detonator fixing groove is electrically connected with and fixes a detonator clamping barrel through a buckle structure, specifically, at least two detonator fixing grooves are formed, and zero wiring electric conduction is completed by clamping an A conductive copper ring and a B conductive copper ring respectively;

the circuit board fixing groove is provided with at least two buckle structures, and the circuit board fixing groove is electrically connected with and fixes the selective switch through the buckle structures; and an electric connection lead between the detonator fixing groove and the circuit board fixing groove is prefabricated.

The utility model discloses a beneficial effect of production does:

the detonator fixing groove is electrically connected and fixed with the detonator clamping cylinder through the buckle structure, the circuit board fixing groove is electrically connected and fixed with the selective firing switch through the buckle structure, an electric connection wire between the detonator fixing groove and the circuit board fixing groove is prefabricated, electric connection is realized through the buckle structure, wiring during field installation is avoided, the installation efficiency is greatly improved, and the error rate of wiring is reduced. The detonator is connected with the wire clamp, and the conductive slip ring copper tube is clamped to the point.

Drawings

FIG. 1 is a schematic view of the structural principle of the perforating gun of the present invention

Fig. 2 is a schematic diagram of the structure principle of the on-site zero wiring device of the perforating gun of the utility model.

In the figure:

1-detonator clamping cylinder; 101-a terminal; 102-B terminal; 103-a conductive copper ring; 104-B conductive copper rings; 2-a perforating gun barrel; 3-a wiring assembly; 301-upper chuck; 302 — intermediate joint; 303-conductive contact card slot; 304-an insulating box; 305-through conductors; 306-lower magazine attachment; 307-upper magazine connector; 308-a selective switch; 309-magazine tube; 310 — metal contact pads; 4-an intermediate joint assembly; 401-pressure-bearing wire passing device; 402-hollow set screws; 403 — a threaded joint; 6, a bullet rack; 7, fixing grooves; 701-detonator fixing groove; 702-a circuit board fixation slot; 8-detonator; 9-a fuse; 10-shaped charge.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1-2, the utility model provides a zero termination in scene of perforating gun, including detonator 8 for install detonator 8's detonator clamping barrel 1 and bullet frame pipe 6, be provided with wiring subassembly 3 in the bullet frame pipe 6.

The detonator clamping cylinder 1 is loaded with an existing common detonator 8, the detonator clamping cylinder 1 is of a tubular hollow cylinder structure, the detonator 8 is inserted into the detonator clamping cylinder 1, the inner size of the detonator clamping cylinder 1 can be customized according to the sizes of detonators of different detonator manufacturers, the detonator clamping cylinder 1 comprises an A wiring terminal 101, a B wiring terminal 102, an A conductive copper ring 103 and a B conductive copper ring 104, the A wiring terminal 101 is connected with the A conductive copper ring 103 through a conducting wire, and the B wiring terminal 102 is connected with the B conductive copper ring 104 through a conducting wire. The wiring terminal A101 and the wiring terminal B102 are elastic clamping structures and are arranged on two sides of the top end of the detonator clamping cylinder 1, and the conductive copper ring A103 and the conductive copper ring B104 are arranged outside the detonator clamping cylinder 1 in a surrounding mode; the ground wire of the detonator 8 is fixed to the a-terminal 101 by a clamping structure and the detonating cord is fixed to the B-terminal 102 by a clamping structure.

The wiring component 3 comprises an upper chuck 301, an intermediate joint 302, a conductive contact clamping groove 303, an insulating box 304, a through lead 305 for supplying power, a lower cartridge frame connector 306, an upper cartridge frame connector 307, a selective switch 308 for a selective control circuit and a cartridge frame tube 6, wherein the upper chuck 301 and the lower chuck (not marked in the figure) are welded and fixed at two ends of the cartridge frame tube 6, and the insulating box 304 is fixed at one end of the cartridge frame tube 6 connected with the intermediate joint 302 through screws.

The wiring component 3 is fixed in the bullet frame tube 6, the wiring component 3 is provided with a detonator fixing groove 701 and a circuit board fixing groove 702, the detonator fixing groove 701 is electrically connected with and fixes the detonator clamping barrel 1 through a buckling structure, specifically, at least two detonator fixing grooves 701 are formed, and zero wiring electric conduction is completed through clamping the conductive copper ring A103 and the conductive copper ring B104 respectively.

The circuit board fixing groove 702 is provided with at least two snap structures, and the circuit board fixing groove 702 is electrically connected and fixes the selector switch 308 through the snap structures. And electrical connection wires between the detonator fixing groove 701 and the circuit board fixing groove 702 are prefabricated.

In the specific implementation: a charge frame pipe 6, a detonator clamping barrel 1, a wiring component 3 and an intermediate head component 4 are sequentially arranged in the perforating gun barrel 2; the bullet frame tube 6 is of a cylindrical structure, a through hole for blasting is formed in the wall of the bullet frame tube, and the energy-gathered perforating bullet 10 is arranged inside the bullet frame tube 6; a detonator 8 is arranged in the detonator clamping cylinder 1, and the detonator 8 is connected with a fuse 9; the other end of the blasting fuse 9 is connected with a shaped charge 10; the middle joint component 4 detonates the detonator 8 through the detonator clamping sleeve 1, finally the detonator 8 detonates the shaped charge 10 through the blasting cord 9, and the shaped charge 10 can sequentially penetrate through the perforating gun barrel 2, the sleeve and the cement pouring layer after detonation, so that hydrocarbon can flow into the sleeve to facilitate mining.

The upper cartridge frame connector 307 is mounted on the upper chuck 301; also included are wires connected at one end to the input end of the circuit board securing slot 702 and at one end to the metal contact pads 310, and metal contact pads 310.

The lower magazine connector 306 is mounted to the center connector 302 and includes a conductive wire having one end connected to an output end of the circuit board fixing groove 702 and one end connected to the metal contact pad 310, and a metal contact pad 310.

The selective switch 308 is used for receiving a control signal of the ground controller, outputting a detonator 8 initiation signal to an initiation end of the detonator 8, outputting a cascade signal to the next-stage selective switch 308, and fixing a grounding wire of the selective switch 308 to the bomb bracket through a screw.

The pressure-bearing wire passing device 401 is arranged in the middle joint 302 and is used for communicating the lower bullet rack connector 306 of the perforating gun of the current stage with the upper bullet rack connector 307 of the perforating gun of the next stage. The pressure-bearing wire passing device 401 includes an upper conductive thimble, a lower conductive thimble, an upper conductive spring, a lower conductive spring, a middle pressure-bearing conductive block, an upper pressure-bearing insulating shell, and a lower pressure-bearing insulating shell.

The intermediate sub 302 is used to connect two stages of perforating guns.

The intermediate joint assembly 4 comprises a pressure-bearing wire passing device 401, a hollow fixing screw 402 and a threaded joint 403, the hollow fixing screw 402 is arranged at the top end of the perforating gun, and the hollow fixing screw 402 is in threaded connection with the threaded joint 403 for fixing the pressure-bearing wire passing device 401.

A bullet rack connector and a pressure-bearing wire passing device 401 for connecting a circuit are respectively arranged at two ends of the perforating gun, and the bullet rack connector comprises a lower bullet rack connector 306 and an upper bullet rack connector 307; the lower bullet frame connector 306 is electrically contacted with the pressure-bearing wire passing device 401 through a metal contact disc 310, and the pressure-bearing wire passing device 401 is electrically contacted with the upper bullet frame connector 307 through the metal contact disc 310.

The utility model discloses under the condition of the electricity connection that does not use the line, accomplish the equipment of perforating gun subassembly, the reliable conveying between the signal.

The foregoing is a more detailed description of the present invention taken in conjunction with the accompanying drawings, which are not intended to limit the invention to the particular embodiments described herein. For those skilled in the art to which the invention pertains, equivalent substitutes or obvious modifications may be made without departing from the spirit of the invention, and the same properties or uses are deemed to be within the scope of the invention as determined by the claims as filed.

Claims (1)

1. An on-site zero wiring device of a perforating gun, which is characterized in that: comprises a detonator (8), a detonator clamping cylinder (1) for mounting the detonator (8) and a cartridge frame tube (6), wherein a wiring component (3) is arranged in the cartridge frame tube (6);

the detonator clamping cylinder (1) is of a tubular hollow cylinder structure, and the detonator clamping cylinder (1) comprises an A binding post (101), a B binding post (102), an A conductive copper ring (103) and a B conductive copper ring (104); the A wiring terminal (101) and the B wiring terminal (102) are of elastic clamping structures, and the A conductive copper ring (103) and the B conductive copper ring (104) are arranged outside the detonator clamping cylinder (1); the A wiring terminal (101) is connected with the A conductive copper ring (103) through a wire, and the B wiring terminal (102) is connected with the B conductive copper ring (104) through a wire; the ground wire of the detonator (8) is fixed on the A binding post (101) through a clamping structure, and the detonating cord is fixed on the B binding post (102) through the clamping structure;

the connection assembly (3) comprises a middle connector (302), a conductive contact clamping groove (303), an insulation box (304), a through wire (305) for supplying power and a selective transmission switch (308) for a selective transmission control circuit, the connection assembly (3) for insulation and support functions is fixed in a bomb rack tube (6), the connection assembly (3) is provided with a detonator fixing groove (701) and a circuit board fixing groove (702), the detonator fixing groove (701) is electrically connected and fixed with a detonator clamping barrel (1) through a buckle structure, at least two detonator fixing grooves (701) are specifically formed, and zero-wiring electric conduction is completed through a clamping A conductive copper ring (103) and a clamping B conductive copper ring (104);

the circuit board fixing groove (702) is provided with at least two buckling structures, the circuit board fixing groove (702) is electrically connected and used for fixing the selective triggering switch (308) through the buckling structures, and an electric connection lead between the detonator fixing groove (701) and the circuit board fixing groove (702) is prefabricated.

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