CN219061604U

CN219061604U - Modularized selective-firing control perforating gun

Info

Publication number: CN219061604U
Application number: CN202220968314.0U
Authority: CN
Inventors: 岳志强; 金俊; 任小虎; 马波; 王瑞
Original assignee: XI'AN FANGYUAN ENERGY ENGINEERING CO LTD
Current assignee: XI'AN FANGYUAN ENERGY ENGINEERING CO LTD
Priority date: 2022-04-25
Filing date: 2022-04-25
Publication date: 2023-05-23
Anticipated expiration: 2032-04-25

Abstract

The utility model discloses a modularized selective firing control perforating gun, which comprises a perforating gun barrel, wherein a bullet holder tube, a detonator clamping cylinder, a field zero wiring device, a wiring assembly and an intermediate joint assembly for connecting each section of perforating gun are sequentially arranged in the perforating gun barrel; the elastic frame pipe is of a cylindrical structure, and the wall of the elastic frame pipe is provided with the through hole for blasting.

Description

Modularized selective-firing control perforating gun

Technical Field

The utility model relates to the technical field of intelligent control of oil and gas exploitation bridge plugs and perforation, in particular to a modularized selective firing control perforating gun.

Background

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

The perforating tool string carries a plurality of perforating guns lowered into the cased well at the location of one or more hydrocarbon reservoirs in the subterranean formation. The perforating gun is internally provided with the shaped perforating charges, and the shaped perforating charges are sequentially ejected through the perforating gun barrel, the sleeve and the cement pouring layer after being initiated, so that hydrocarbon can flow into the sleeve. Once the perforating gun reaches a specified position, the surface instrument issues an ignition signal and a firing switch to detonate a detonator in the perforating gun, which in turn ignites a detonating cord that detonates the shaped charges to pierce the barrel, casing, cement layer, thereby allowing formation fluids to flow into the riser.

Assembly of a perforating gun requires assembly of a number of parts, typically including at least the following: the gun comprises a gun barrel, a bullet frame, a wired detonator, a detonating cord, a shaped perforating bullet, a selecting switch, a middle joint and a pressure-bearing wire passing device, wherein at least two wires are needed to be manually connected between the wired detonator and the selecting switch, at least one wire is needed to be connected between the selecting switch and the selecting switch in the next-stage perforating gun assembly, at least one wire is needed to be connected between the selecting switch and the bullet frame, and at least one wire is needed to be connected between the selecting switch and the pressure-bearing wire passing device. The barrels are connected with each other through an intermediate joint, relative rotation is required during connection, and when one part is inserted into the other part through threads, wire winding, knotting and even fracture often occur. In addition, when a wired detonator is used, it must be manually connected to an electrical wiring, which causes a number of problems. Because the parts are rotationally assembled, the wire may wear, kink, fold or crack, and manual wire bonding is prone to rework.

Disclosure of Invention

The present utility model solves the above problems by providing a modular selectively firing control perforating gun, providing a zero wiring device, and installing the zero wiring device into the perforating gun, and completing all wiring operations in the factory. The field zero wiring is realized. And a plurality of faults caused by wiring are avoided.

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

the utility model designs a modularized selective firing control perforating gun, which comprises a perforating gun barrel, wherein a bullet holder tube, a detonator holder, a wiring assembly and an intermediate connector assembly for connecting each section of perforating gun are sequentially arranged in the perforating gun barrel; the bullet frame tube is of a cylindrical structure, the wall of the bullet frame tube is provided with a through hole for blasting, and the inside of the bullet frame tube is provided with shaped perforating bullets; a detonator is arranged in the Lei Guanga cylinder, and the detonator is connected with a detonating cord; the other end of the fire guide rope is connected with the shaped perforating bullet; the detonation signal is transmitted to the wiring assembly through the intermediate connector assembly and detonates the detonator through the Lei Guanga cylinder, and finally the detonator detonates the shaped perforating charge through the detonating cord, and the shaped perforating charge is fired through the perforating gun barrel after being detonated.

In the modularized selective emission control perforating gun, the middle joint assembly comprises a pressure-bearing wire passing device, a hollow fixing screw and a threaded joint, wherein the hollow fixing screw is arranged at the top end of the perforating gun, and the hollow fixing screw is connected with the threaded joint through threads to fix the pressure-bearing wire passing device;

the tail end of the perforating gun is provided with a bullet rack connector for connecting a circuit, and the bullet rack connector comprises a lower bullet rack connector and an upper bullet rack connector; the elastic metal contact plate is used for electric connection, the lower spring frame connector is in electric contact connection with the pressure-bearing wire passing device through the metal contact plate, and the pressure-bearing wire passing device is in electric contact connection with the upper spring frame connector through the metal contact plate.

The utility model also relates to a field zero wiring device of the modularized selective firing control perforating gun, based on the selective firing control perforating gun, the detonator clamping cylinder is of a tubular hollow cylinder structure and comprises a binding post A, a binding post B, a conductive copper ring A and a conductive copper ring B; the binding post A and the binding post B are elastic clamping structures, and the conductive copper ring A and the conductive copper ring B are arranged outside the Lei Guanga cylinder; the binding post A is connected with the conductive copper ring A through a wire, and the binding post B is connected with the conductive copper ring B through a wire; the ground wire of the detonator is fixed to the A binding post through a clamping structure, and the detonating cord is fixed to the B binding post through a clamping structure;

the wiring component comprises an intermediate connector, a conductive contact clamping groove, an insulation box, a through wire for supplying power and a selection switch for selecting a control circuit,

wires between the selector switch and the detonator, between the selector switch and the spring frame tube, and between the selector switch and the lower spring frame connector; the hair selecting switch is assembled in the insulation box; at least two conductive contact clamping grooves are respectively used for completing zero-wiring electric conduction through clamping the conductive copper rings A and B.

The beneficial effects of the utility model are that:

the selection is sent out switch circuit board and is arranged in coupling assembling's insulating box, has been prefabricated and has sent out between switch and the detonator, between switch and the bullet frame pipe, between switch and the lower bullet frame connector are sent out in the selection, realizes the electricity through the clamping structure and connects, has avoided the wiring when on-the-spot installation, has improved installation effectiveness greatly, reduces the error rate of wiring. The detonator is connected with the clamping wire, and the copper pipe of the conductive slip ring is clamped to the point.

Drawings

FIG. 1 is a schematic diagram of the construction principle of a modular selectively firing control perforating gun according to the present utility model.

Fig. 2 is a schematic structural diagram of a field zero wiring device of the modular selectively-firing control perforating gun according to the present utility model.

In the figure:

1-detonator clip; 101-a binding post; 102-B binding post; 103-A conductive copper rings; 104-B conductive copper rings; 2-perforating gun barrel; 3-a wiring assembly; 301-upper chuck; 302—an intermediate joint; 303-conductive contact card slot; 304-an insulation box; 305-a through wire; 306-a lower spring holder connector; 307-spring-up rack connector; 308—a trigger switch; 309—spring rack tube; 310—a metal contact pad; 4-an intermediate joint assembly; 401-a pressure-bearing wire passing device; 402—a hollow set screw; 403-threaded joint; 6, spring frame; 7, a fixed groove; 8, detonator; 9-a fire cable; 10-shaped charges.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be further described in detail 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 scope of the utility model.

Referring to fig. 1 and 2, the utility model provides a modularized selective firing control perforating gun, which comprises a perforating gun barrel 2, wherein a cartridge holder tube 6, a Lei Guanga tube 1, a wiring assembly 3 and an intermediate joint assembly 4 are sequentially arranged in the perforating gun barrel 2; the bullet rack tube 6 is of a cylindrical structure, the cylinder wall is provided with a through hole for blasting, and the inside of the bullet rack tube 6 is provided with a shaped perforating bullet 10; a detonator 8 is arranged in the Lei Guanga cylinder 1, and the detonator 8 is connected with a detonating cord 9; the other end of the detonating cord 9 is connected with a shaped charge 10; the middle joint assembly 4 detonates the detonator 8 through the Lei Guanga cylinder 1, and finally the detonator 8 detonates the shaped perforating charge 10 through the detonating cord 9, and the shaped perforating charge 10 is sequentially shot through the perforating gun barrel 2, the sleeve and the cement pouring layer after being detonated, so that hydrocarbon can flow into the sleeve to be conveniently mined.

Lei Guanga barrel 1 loads current ordinary detonator 8, detonator holder 1 be tubular hollow cylinder structure, inside the detonator 8 inserted Lei Guanga barrel 1, lei Guanga barrel 1 internal dimension can be according to different detonator producer detonator size customization, detonator holder 1 contain A terminal 101, B terminal 102, A conductive copper ring 103, B conductive copper ring 104, connect through the wire between A terminal 101 and the A conductive copper ring 103, connect through the wire between B terminal 102 and the B conductive copper ring 104. The A binding post 101 and the B binding post 102 are of elastic clamping structures and are arranged on two sides of the top end of the Lei Guanga cylinder 1, and the A conductive copper ring 103 and the B conductive copper ring 104 are arranged outside the Lei Guanga cylinder 1 in a surrounding manner; the ground wire of the detonator 8 is secured to the a-post 101 by a clamping structure and the primer wire is secured to the B-post 102 by a clamping structure.

The wiring assembly 3 comprises an upper chuck 301, an intermediate connector 302, a conductive contact clamping groove 303, an insulating box 304, a through wire 305 for supplying power, a lower spring frame connector 306, an upper spring frame connector 307, a selection switch 308 for selecting a control circuit and a spring frame tube 6, wherein the upper chuck 301 and the lower chuck are not shown in the drawing and are welded and fixed to two ends of the spring frame tube 6, the insulating box 304 is fixed to one end of the spring frame tube 6, which is connected with the intermediate connector 302, through screws, the insulating box 304 is used for loading the selection switch 308 and a detonator 8, and wires between the selection switch 308 and the detonator 8, between the selection switch 308 and the spring frame tube 6 and between the selection switch 308 and the lower spring frame connector 306 are prefabricated. The selector switch 308 is assembled in the insulating box 304, and the conductive contact clamping grooves 303 are used for clamping the Lei Guanga cylinder 1, specifically, at least two conductive contact clamping grooves 303 are respectively used for completing zero-wiring electric conduction through clamping the

conductive copper rings

103 and 104.

The upper spring holder connector 307 is mounted to the upper chuck 301; and also includes a wire having one end connected to the input of the selector switch 308 and a metal contact pad 310 having one end connected to the metal contact pad 310.

The lower spring holder connector 306 is mounted to the intermediate connector 302 and includes wires connected at one end to the output of the selector switch 308 and at one end to the metal contact pad 310, and a metal contact pad 310.

The trigger switch 308 is configured to receive a control signal of the ground controller, output a detonation signal of the detonator 8 to a detonation end of the detonator 8, and output a cascade signal to the next-stage trigger switch 308, where a ground wire of the trigger switch 308 is fixed to the spring frame by a screw.

The pressure-bearing wire passing device 401 is arranged in the middle joint 302 and is used for conducting the lower bullet rack connector 306 of the perforating gun of the current stage and the upper bullet rack connector 307 of the perforating gun of the next stage. The pressure-bearing wire passing device 401 comprises 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 connector 302 is used to connect two-stage perforating guns.

The middle joint assembly 4 comprises a pressure-bearing wire passing device 401, a hollow fixing screw 402 and a threaded joint 403, wherein 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 and is used for fixing the pressure-bearing wire passing device 401.

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

The utility model can complete the assembly of the perforating gun assembly and the reliable transmission of signals without using wired electric connection.

The foregoing is a further detailed description of the utility model in connection with specific embodiments, and is not intended to limit the practice of the utility model thereto. Several equivalent substitutions or obvious modifications will occur to those skilled in the art to which this utility model pertains without departing from the spirit of the utility model, and the same should be considered to be within the scope of this utility model as defined in the appended claims.

Claims

1. The modularized selective emission control perforating gun comprises a Lei Guanga barrel, and is characterized in that the Lei Guanga barrel (1) is of a tubular hollow barrel structure, and the detonator clamping barrel (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 binding post A (101) and the binding post B (102) are of elastic clamping structures, and the conductive copper ring A (103) and the conductive copper ring B (104) are arranged outside the Lei Guanga cylinder (1); the binding post A (101) is connected with the conductive copper ring A (103) through a wire, and the binding post B (102) is connected with the conductive copper ring B (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 wire is fixed on the B binding post (102) through a clamping structure;

the wiring component (3) comprises an intermediate connector (302), a conductive contact clamping groove (303), an insulating box (304), a through wire (305) for supplying power and a selective switch (308) for a selective control circuit,

wires between the selector switch (308) and the detonator (8), between the selector switch (308) and the spring frame tube (6) and between the selector switch (308) and the lower spring frame connector (306); the selector switch (308) is assembled into the insulating box (304); at least two conductive contact clamping grooves (303) are respectively used for completing zero-wiring electric conduction through clamping the conductive copper rings (103) and the conductive copper rings (104).

2. The modularized selective firing control perforating gun according to claim 1, further comprising a perforating gun barrel (2), wherein a bullet frame tube (6), a detonator clamping cylinder (1), a wiring assembly (3) and an intermediate connector assembly (4) for connecting each perforating gun are sequentially arranged in the perforating gun barrel (2); the bullet rack tube (6) is of a cylindrical structure, the cylinder wall is provided with a through hole for blasting, and the inside of the bullet rack tube (6) is provided with a shaped perforating bullet (10); a detonator (8) is arranged in the Lei Guanga cylinder (1), and the detonator (8) is connected with a fire cable (9); the other end of the fire guide rope (9) is connected with a shaped charge (10); the detonation signal is conducted to the wiring assembly (3) through the middle joint assembly (4) and detonates the detonator (8) through the Lei Guanga cylinder (1), and finally the detonator (8) detonates the shaped perforating bullet (10) through the detonating cord (9), and the shaped perforating bullet (10) is detonated and then is shot through the perforating gun barrel (2).

3. A modular firing control perforating gun as claimed in claim 2, wherein the intermediate joint assembly (4) comprises a pressure-bearing wire-passing device (401), a hollow fixing screw (402) and a threaded joint (403), wherein the hollow fixing screw (402) is arranged at the top end of the perforating gun, and the hollow fixing screw (402) is connected with the threaded joint (403) through threads to fix the pressure-bearing wire-passing device (401);

the tail end of the perforating gun is provided with a bullet rack connector for connecting a circuit, and the bullet rack connector comprises a lower bullet rack connector (306) and an upper bullet rack connector (307); the lower spring frame connector (306) is in contact connection with the pressure-bearing wire passing device (401) through metal contact points of the metal contact plates (310), and the pressure-bearing wire passing device (401) is in contact connection with the upper spring frame connector (307) through metal contact points of the metal contact plates (310).