CN114753810A - Modular selective firing control perforating gun - Google Patents
Modular selective firing control perforating gun Download PDFInfo
- Publication number
- CN114753810A CN114753810A CN202210440683.7A CN202210440683A CN114753810A CN 114753810 A CN114753810 A CN 114753810A CN 202210440683 A CN202210440683 A CN 202210440683A CN 114753810 A CN114753810 A CN 114753810A
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- China
- Prior art keywords
- detonator
- perforating gun
- wiring
- clamping
- selective
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010304 firing Methods 0.000 title claims abstract description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 238000005422 blasting Methods 0.000 claims description 8
- 210000001503 joint Anatomy 0.000 claims description 4
- 238000005474 detonation Methods 0.000 claims description 3
- 238000011065 in-situ storage Methods 0.000 claims 1
- 238000009413 insulation Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract 3
- 239000004568 cement Substances 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002800 charge carrier Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
- E21B43/116—Gun or shaped-charge perforators
- E21B43/117—Shaped-charge perforators
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
- E21B43/116—Gun or shaped-charge perforators
- E21B43/1185—Ignition systems
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
- E21B43/119—Details, e.g. for locating perforating place or direction
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Air Bags (AREA)
Abstract
The invention discloses a modularized perforating selective firing control perforating gun, which comprises a detonator clamping barrel and a wiring assembly, wherein the detonator clamping barrel is used for mounting a detonator; 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; meanwhile, direct detonator detonating wires and direct ground wire leading-out are supported; the wiring assembly comprises an intermediate connector, a conductive contact clamping groove, an insulating box, a through wire for supplying power and a selective transmission switch for a selective transmission control circuit, and the selective transmission switch is assembled in the insulating box; at least two conductive contact clamping grooves are formed, and zero wiring electric conduction is achieved by clamping the conductive copper ring A and the conductive copper ring B respectively; the invention avoids wiring in field installation, greatly improves the installation efficiency and reduces the error rate of wiring.
Description
Technical Field
The invention relates to the technical field of intelligent control of bridge plugs and perforation in oil and gas exploitation, in particular to a modularized selective firing control perforating gun.
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 combination of the bridge plug and the perforation is the most widely used perforation completion mode for the development of 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 energy-gathering perforating bullet, and the energy-gathering 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 perforating gun reaches a designated location, the surface instrument issues an ignition signal and the trigger switch initiates a detonator within the perforating gun, which in turn ignites the detonating cord, which detonates the shaped charge to pass the barrel, casing, and cement layers through, 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.
Disclosure of Invention
The invention aims to solve the problems and provides a modularized selective firing control perforating gun, a zero wiring device is provided and is installed in the perforating gun, and all wiring operations are completed in a factory. And field zero wiring is realized. Many faults introduced by wiring are avoided.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention designs a modularized selective firing control perforating gun which comprises a perforating gun barrel, wherein a charge carrier tube, a detonator clamping barrel, a wiring assembly and an intermediate joint assembly for connecting each section of perforating gun are sequentially arranged in the perforating gun barrel; the cartridge frame tube is of a cylindrical structure, the wall of the cartridge frame tube is provided with a through hole for blasting, and the inside of the cartridge frame tube is provided with the energy-gathered perforating charges; a detonator is arranged in the detonator clamping cylinder and is connected with a fuse; the other end of the blasting fuse 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 detonator clamping barrel, finally the detonator detonates the shaped charge through the blasting cord, and the shaped charge is detonated and then penetrates through the perforating gun barrel.
In the modularized selective firing control perforating gun, the middle joint component comprises a pressure-bearing wire passing device, a hollow fixing screw and a threaded joint, 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 disc is used for electric connection, the lower bullet frame connector and the pressure-bearing wire passing device are in contact connection through a metal contact disc electric contact, and the pressure-bearing wire passing device and the upper bullet frame connector are in contact connection through a metal contact disc electric contact.
The invention also relates to a field zero wiring device of the modularized selective firing control perforating gun, based on the selective firing control perforating gun, a detonator clamping cylinder is of a tubular hollow cylinder structure, and the detonator clamping cylinder contains an A wiring terminal, a B wiring terminal, an A conductive copper ring and a B conductive copper ring; 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 connector, a conductive contact clamping groove, an insulating box, a through lead for supplying power and a selective switch for a selective control circuit,
the conducting wires are arranged between the selective-sending switch and the detonator, between the selective-sending switch and the bullet rack pipe and between the selective-sending switch and the lower bullet rack connector; the selective switch is assembled in the insulating box; the number of the conductive contact clamping grooves is at least two, and zero wiring electric conduction is achieved by clamping the conductive copper ring A and the conductive copper ring B respectively.
The beneficial effects produced by adopting the invention are as follows:
the selective-sending switch circuit board is arranged in an insulating box of the connecting component, wires between the selective-sending switch and the detonator, between the selective-sending switch and the bullet frame tube and between the selective-sending switch and the lower bullet frame connector are prefabricated, electric connection is achieved through the clamping structure, wiring during field installation is avoided, installation efficiency is greatly improved, and the wiring error rate 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 diagram of the modular selective firing control perforating gun of the present invention.
Fig. 2 is a schematic structural diagram of an on-site zero wiring device of the modular selective firing control perforating gun according to the present invention.
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 conductor; 306-lower magazine attachment; 307-upper magazine connector; 308-a selective switch; 309-magazine tube; 310 — metal contact pads; 4-intermediate joint assembly; 401-pressure-bearing wire passing device; 402-hollow set screw; 403 — a threaded joint; 6, a bullet rack; 7, fixing the groove; 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 apparent, 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 merely illustrative of the invention and do not limit the invention.
Referring to fig. 1 and 2, the invention provides a modular selective firing control perforating gun, which comprises a perforating gun barrel 2, wherein a cartridge holder tube 6, a detonator clamping barrel 1, a wiring assembly 3 and an intermediate head assembly 4 are sequentially arranged in the perforating gun barrel 2; the bullet frame tube 6 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 6 is provided with the shaped charge 10; 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 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 A binding post 101 and the B binding post 102 are elastic clamping structures and are arranged on two sides of the top end of the detonator clamping cylinder 1, and the A conductive copper ring 103 and the B conductive copper ring 104 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 wire connection 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 bullet frame connector 306, an upper bullet frame connector 307, a selective switch 308 for a selective control circuit and a bullet frame tube 6, wherein the upper chuck 301 and the lower chuck are welded and fixed at two ends of the bullet frame tube 6, the insulating box 304 is fixed at one end of the bullet frame tube 6 connected with the intermediate joint 302 through screws, the insulating box 304 is used for loading the selective switch 308 and a detonator 8, and leads between the selective switch 308 and the detonator 8, between the selective switch 308 and the bullet frame tube 6 and between the selective switch 308 and the lower bullet frame connector 306 are prefabricated. The selective switch 308 is assembled in the insulating box 304, the conductive contact clamping grooves 303 are used for clamping the detonator clamping cylinder 1, specifically, at least two conductive contact clamping grooves 303 are used for completing zero-wiring electric conduction by clamping the conductive copper ring 103A and the conductive copper ring 104B respectively.
The upper cartridge frame connector 307 is mounted on the upper chuck 301; also included is a conductive line connected at one end to the input of the selector switch 308 and at one end to the metal contact pad 310, and a metal contact pad 310.
The lower magazine connector 306 is mounted to the center connector 302 and includes a conductive wire having one end connected to the output of the selector switch 308 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 a detonator 8 initiation end, and outputting a cascade signal to the next-stage selective switch 308, wherein a grounding wire of the selective switch 308 is fixed on 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 top end of the perforating gun is provided with the hollow fixing screw 402, and the hollow fixing screw 402 is in threaded connection with the threaded joint 403 and 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 threading 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 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 a metal contact disc.
The present invention completes the assembly of the perforating gun assembly and reliable transmission of signals without the use of wired electrical connections.
The present invention has been described in further detail with reference to specific embodiments, but the present invention should not be construed as being limited to the specific embodiments. For a person skilled in the art to which the invention pertains, several equivalent alternatives or obvious modifications, all of which have the same properties or uses, without departing from the inventive concept, should be considered as falling within the scope of the patent protection of the invention, as determined by the claims submitted.
Claims (3)
1. An in-situ zero wiring device for a modular, selectively activated perforating gun, as recited in claim 1, wherein:
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 wiring component (3) comprises a middle joint (302), a conductive contact card slot (303), an insulating box (304), a through lead (305) for supplying power and a selective switch (308) for a selective control circuit,
wires between the selective-sending switch (308) and the detonator (8), between the selective-sending switch (308) and the bullet rack tube (6), and between the selective-sending switch (308) and the lower bullet rack connector (306); the selector switch (308) is assembled in the insulation box (304); at least two conductive contact clamping grooves (303) are formed, and zero wiring electric conduction is achieved by clamping the conductive copper ring A (103) and the conductive copper ring B (104) respectively.
2. A modular selective firing control perforating gun, characterized in that, the field zero wiring device of the modular selective firing control perforating gun is adopted, and the field zero wiring device also comprises a perforating gun barrel (2), wherein a bullet holder tube (6), a detonator clamping sleeve (1), a wiring assembly (3) and an intermediate connector assembly (4) for connecting each perforating gun are arranged in the perforating gun barrel (2) in sequence; 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 shaped charge (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 detonation signal is transmitted to the wiring assembly (3) through the intermediate connector assembly (4) and detonates the detonator (8) through the detonator clamping cylinder (1), finally the detonator (8) detonates the shaped charge (10) through the fuse (9), and the shaped charge (10) is detonated and then penetrates through the perforating gun barrel (2).
3. The modular firing control perforating gun as claimed in claim 2, characterized in that the intermediate sub assembly (4) comprises a pressure-bearing wire guide (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, the hollow fixing screw (402) fixes the pressure-bearing wire guide (401) by screwing the threaded joint (403);
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 elastic metal contact disc (310) is used for electric connection, the lower bullet frame connector (306) is in contact connection with the pressure-bearing wire passing device (401) through an electric contact point of the metal contact disc (310), and the pressure-bearing wire passing device (401) is in contact connection with the upper bullet frame connector (307) through an electric contact point of the metal contact disc (310).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210440683.7A CN114753810A (en) | 2022-04-25 | 2022-04-25 | Modular selective firing control perforating gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210440683.7A CN114753810A (en) | 2022-04-25 | 2022-04-25 | Modular selective firing control perforating gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114753810A true CN114753810A (en) | 2022-07-15 |
Family
ID=82334023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210440683.7A Pending CN114753810A (en) | 2022-04-25 | 2022-04-25 | Modular selective firing control perforating gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114753810A (en) |
-
2022
- 2022-04-25 CN CN202210440683.7A patent/CN114753810A/en active Pending
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