CN114412426A - Magnetoelectric initiation device for oil and gas field, use method and initiation circuit - Google Patents
Magnetoelectric initiation device for oil and gas field, use method and initiation circuit Download PDFInfo
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- CN114412426A CN114412426A CN202210001290.6A CN202210001290A CN114412426A CN 114412426 A CN114412426 A CN 114412426A CN 202210001290 A CN202210001290 A CN 202210001290A CN 114412426 A CN114412426 A CN 114412426A
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- firing pin
- initiation
- magnetoelectric
- detonator
- oil
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- 230000000977 initiatory effect Effects 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000010304 firing Methods 0.000 claims abstract description 89
- 238000005474 detonation Methods 0.000 claims abstract description 28
- 238000009434 installation Methods 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims description 14
- 238000010008 shearing Methods 0.000 claims description 6
- 230000005389 magnetism Effects 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000006698 induction Effects 0.000 abstract description 6
- 230000005611 electricity Effects 0.000 abstract description 2
- 238000009527 percussion Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000037452 priming Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- E21B43/1185—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
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- 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 magnetoelectric initiation device for an oil and gas field, a using method and an initiation circuit, wherein the magnetoelectric initiation device comprises a shell, a cavity is arranged in the shell, and the cavity is respectively a pressurizing cavity, a firing pin installation cavity and a detonator installation cavity from top to bottom; an electromagnetic relay, a detonation power supply and an electric detonator are sequentially arranged in the detonator mounting cavity from top to bottom; a space is reserved between the vertical tail end of the firing pin and the electromagnetic relay; the firing pin is magnetic, the electric detonator is adopted to replace the percussion detonator in the prior art, the magnetic firing pin utilizes the principle of magnetic generation to generate electricity, the current generated by the magnetic induction coil is used as an initiating signal, and the working principle of the relay is utilized, so that after the relay receives the initiating signal, the initiating circuit is conducted, and the electric detonator is detonated; meanwhile, the magnetic induction coil, the firing pin, the detonation power supply and the relay can be reused, so that the operation cost is further reduced; the technical problems of low safety degree and high cost in the use process of the impact detonator in the prior art are solved.
Description
Technical Field
The invention belongs to the technical field of oil fields, and relates to a detonation device, in particular to a magnetoelectric detonation device for an oil-gas field, a using method and a detonation circuit.
Background
In the perforating operation of the oil and gas field, the oil pipe transmission has the characteristics of accurate positioning and low cost, so in the perforating operation of the oil and gas field, the oil pipe transmission mode is usually adopted, and in order to detonate perforating bullets, a common initiation element is an impact detonator, so that the water is used as a medium to pressurize in the oil pipe, and a firing pin is used for detonating the impact detonator. However, with the development of society, many problems of the impact detonator are revealed, for example, the attention items in the transportation process are various and complicated, the overdue impact detonator cannot be destroyed well, and certain danger exists in the removal work after the impact fire cap is impacted and the detonator is not detonated normally.
The electric detonator has great advantages in the aspects of use, destruction and fault elimination, and the electric detonator can be disassembled and destroyed only by short-circuiting the circuit when the electric detonator is eliminated. And the price of the electric detonator is lower than that of the impact detonator, and the manufacturers of the electric detonator are more. The application of the electric detonator in the perforating operation of oil pipe transmission has important research value, and the mode of utilizing hydraulic pressure to detonate the electric detonator also has important application value.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a magnetoelectric initiation device for an oil and gas field, a using method and an initiation circuit, and solves the technical problems of low safety and high cost in the use of an impact detonator in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
a magnetoelectric initiation device for oil and gas fields comprises a shell, wherein the shell comprises an upper joint and an initiation joint, the upper joint and the initiation joint are detachably connected, a cavity is arranged in the shell, and the cavity is respectively a pressurizing cavity, a firing pin installation cavity and a detonator installation cavity from top to bottom; the middle part of the firing pin installation cavity is provided with a firing pin; an electromagnetic relay, a detonation power supply and an electric detonator are sequentially arranged in the detonator mounting cavity from top to bottom; a space is reserved between the vertical tail end of the firing pin and the electromagnetic relay; the firing pin has magnetism, is provided with a plurality of closed coils in the outside firing pin installation cavity of firing pin, a plurality of closed coils install on firing pin installation cavity lateral wall and have the interval with the firing pin.
The firing pin is made of a magnet or is provided with a magnetic block.
The outer firing pin installation cavity of firing pin in be equipped with the firing pin cover, the firing pin cover is fixed in the lateral wall of firing pin installation cavity and is located closed coil below, the circumference of firing pin cover on be equipped with a plurality of shear pins along radial equipartition, the end of shear pin inserts in the hole on the outer wall of firing pin.
And a locking screw is arranged between the upper joint and the detonating joint.
The upper half part of the firing pin is provided with a plurality of layers of first sealing rings; a second sealing ring is arranged between the upper joint and the detonating joint; and a third sealing ring is arranged on the outer surface of the detonating joint.
The shell is provided with a plurality of hook holes.
A detonation circuit of a magnetoelectric detonation device for an oil and gas field comprises a control circuit of an electromagnetic relay and a detonation circuit arranged on an electric detonator, wherein the detonation circuit is connected with a detonation power supply; the control circuit of the electromagnetic relay is connected with the closed coil;
the enlightening circuit, the control circuit and the detonation circuit are connected in sequence through conducting wires.
A use method of a magnetoelectric initiation device for an oil and gas field comprises the following steps:
determining the magnetic field intensity of a firing pin, the length of a closed coil and the speed of a magnet penetrating through the closed coil according to the starting current required by an electromagnetic relay;
step two, the oil-gas field is placed at a specified position by a magnetoelectric initiation device, a wellhead starts to be pressed, a firing pin shears a shearing pin under the action of pressure, the firing pin continues to descend, and when the firing pin penetrates through a closed coil, the closed coil generates current; when the current reaches the starting current of the electromagnetic relay, the switch of the electromagnetic relay is closed, so that the initiation circuit is conducted, the initiation power supply supplies power to the electric detonator, the electric detonator is initiated, and one-time initiation is completed.
Compared with the prior art, the invention has the beneficial technical effects that:
the invention adopts the electric detonator to replace the percussion detonator in the prior art, the magnetic firing pin uses the principle of magnetic generation of electricity, the current generated by the magnetic induction coil is used as an initiating signal, and the working principle of the relay is used, when the relay receives the initiating signal, the initiating circuit is conducted, so that the electric detonator is detonated; meanwhile, the magnetic induction coil, the firing pin, the detonation power supply and the relay can be reused, so that the operation cost is further reduced; the technical problems of low safety degree and high cost in the use process of the impact detonator in the prior art are solved.
And (II) the electric detonator is detonated by using low current, so that the danger in the transportation process is reduced, the mode of transmitting the electric detonator by using the oil pipe is feasible, and meanwhile, a cable is not needed in the well head pressurizing mode, so that the construction cost is saved, the construction time is reduced, and the working efficiency is improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the apparatus of the present invention;
FIG. 2 is a schematic diagram of the internal cavity of the device of the present invention;
FIG. 3 is a schematic view of the external structure of the apparatus of the present invention;
FIG. 4 is a schematic view of a partially enlarged structure of the apparatus of the present invention;
FIG. 5 is a schematic diagram of the circuit connection structure of the present invention.
The meaning of the individual reference symbols in the figures is: 1-shell, 2-cavity, 3-firing pin, 4-electromagnetic relay, 5-priming power supply, 6-electric detonator, 7-closed coil, 8-firing pin sleeve, 9-shearing pin, 10-anti-loosening screw, 11-first sealing ring, 12-second sealing ring, 13-third sealing ring and 14-hook hole;
101-upper joint, 102-priming joint;
201-a pressurizing cavity, 202-a firing pin installation cavity and 203-a detonator installation cavity.
The present invention will be explained in further detail with reference to examples.
Detailed Description
All parts in the present invention are those known in the art, unless otherwise specified.
The following embodiments of the present invention are provided, and it should be noted that the present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present invention are within the protection scope of the present invention.
A magnetoelectric initiation device for oil and gas fields comprises a shell 1, as shown in figures 1 to 4, the shell 1 comprises an upper connector 101 and an initiation connector 102, the upper connector 101 is detachably connected with the initiation connector 102, a cavity 2 is arranged in the shell 1, and the cavity 2 is respectively a pressurizing cavity 201, a firing pin installation cavity 202 and a detonator installation cavity 203 from top to bottom; the middle part of the firing pin installation cavity 202 is provided with a firing pin 3; the electromagnetic relay 4, the initiation power supply 5 and the electric detonator 6 are sequentially arranged in the detonator mounting cavity 203 from top to bottom; a space is reserved between the vertical tail end of the firing pin 3 and the electromagnetic relay 4; the firing pin 3 is magnetic, a plurality of closed coils 7 are arranged in the firing pin mounting cavity 202 outside the firing pin 3, and the plurality of closed coils 7 are mounted on the side wall of the firing pin mounting cavity 202 and spaced from the firing pin 3.
Specifically, the firing pin 3 is made of a magnet or the firing pin 3 is provided with a magnetic block, so that the coil can be closed to generate current, and the specific setting mode can be set according to specific conditions.
In the technical scheme, an electric detonator is adopted to replace an impact detonator in the prior art, a magnetic firing pin utilizes the principle of magnetic generation, current generated by a magnetic induction coil is used as an initiating signal, and a working principle of a relay is utilized, so that after the relay receives the initiating signal, a priming circuit is conducted, and the electric detonator is detonated; meanwhile, the magnetic induction coil, the firing pin, the detonation power supply and the relay can be reused, so that the operation cost is further reduced; the technical problems of low safety degree and high cost in the use process of the impact detonator in the prior art are solved.
Specifically, a firing pin sleeve 8 is arranged in a firing pin mounting cavity 202 outside the firing pin 3, the firing pin sleeve 8 is fixed on the side wall of the firing pin mounting cavity 202 and is located below the closed coil 7, a plurality of shearing pins 9 are uniformly distributed along the radial direction in the circumferential direction of the firing pin sleeve 8, and the tail ends of the shearing pins 9 are inserted into holes in the outer wall of the firing pin 3.
In the technical scheme, the shear pin 9 has the function of ensuring that the position of the firing pin 3 is fixed when the firing pin 3 is under the action of pressure, when the pressure reaches the shear value of the shear pin 9, the firing pin 3 and the firing pin sleeve 8 can shear the shear pin 9, and at the moment, liquid on the firing pin 3 is in a state of pressure, so that energy can be supplied to the firing pin 3 at the moment when the shear pin 9 is broken, so that the firing pin 3 moves towards the direction of the initiation connector and then passes through the closed coil 7, and the closed coil 7 generates current.
Specifically, a locking screw 10 is arranged between the upper joint 101 and the initiation joint 102, so that the initiation joint and the upper joint are prevented from falling off in the process of descending the well.
Specifically, the upper half part of the firing pin 3 is provided with a plurality of layers of first sealing rings 11; a second sealing ring 12 is arranged between the upper joint 101 and the initiation joint 102; the outer surface of the priming connector 102 is provided with a third sealing ring 13.
In the technical scheme, the first sealing ring 6 is arranged to prevent liquid leakage and ensure the pressure rise of the pressurizing cavity; the second sealing ring 7 is arranged to prevent liquid from entering the firing pin installation cavity 202; a third seal 11 is provided for connecting the initiator device to other components.
Specifically, a plurality of hook holes 14 are formed in the shell 1, and a plurality of hook holes 10 are formed in the shell 1, so that the installation is facilitated.
A detonation circuit of a magnetoelectric detonation device for an oil and gas field comprises a control circuit of an electromagnetic relay and a detonation circuit arranged on an electric detonator, wherein the detonation circuit is connected with a detonation power supply; the control circuit of the electromagnetic relay is connected with the closed coil;
the enlightening circuit, the control circuit and the detonation circuit are connected in sequence through conducting wires.
A use method of a magnetoelectric initiation device for an oil and gas field comprises the following steps:
firstly, determining the appropriate magnetic field intensity of a firing pin 3, the length of a closed coil and the speed of a magnet passing through the closed coil according to the starting current required by an electromagnetic relay;
step two, the oil-gas field is placed at a specified position by a magnetoelectric initiation device, a wellhead starts to be pressed, a firing pin shears a shearing pin under the action of pressure, the firing pin continues to descend, and when the firing pin penetrates through a closed coil, the closed coil generates current; when the current reaches the starting current of the electromagnetic relay, the switch of the electromagnetic relay is closed, so that the initiation circuit is conducted, the initiation power supply supplies power to the electric detonator, the electric detonator is initiated, and one-time initiation is completed.
Claims (8)
1. A magnetoelectric initiation device for an oil and gas field comprises a shell (1), wherein the shell (1) comprises an upper connector (101) and an initiation connector (102), the upper connector (101) is detachably connected with the initiation connector (102), a cavity (2) is arranged in the shell (1), and the cavity (2) is respectively a pressurizing cavity (201), a firing pin installation cavity (202) and a detonator installation cavity (203) from top to bottom; the middle part of the firing pin installation cavity (202) is provided with a firing pin (3); the explosion-proof detonator is characterized in that an electromagnetic relay (4), a detonation power supply (5) and an electric detonator (6) are sequentially arranged in the detonator mounting cavity (203) from top to bottom; a space is reserved between the vertical tail end of the firing pin (3) and the electromagnetic relay (4); the firing pin (3) have magnetism, be provided with a plurality of closed coils (7) in firing pin installation cavity (202) of firing pin (3) outside, a plurality of closed coils (7) install on firing pin installation cavity (202) lateral wall and have the interval with firing pin (3).
2. The magnetoelectric initiation device for oil and gas fields according to claim 1, characterized in that the firing pin (3) is made of magnet or a magnet is arranged on the firing pin (3).
3. The magnetoelectric detonation device for oil and gas fields according to claim 1, characterized in that a firing pin sleeve (8) is arranged in the firing pin installation cavity (202) outside the firing pin (3), the firing pin sleeve (8) is fixed on the side wall of the firing pin installation cavity (202) and is located below the closed coil (7), a plurality of shear pins (9) are uniformly distributed along the radial direction are arranged in the circumferential direction of the firing pin sleeve (8), and the tail ends of the shear pins (9) are inserted into holes in the outer wall of the firing pin (3).
4. The magnetoelectric initiation device for oil and gas fields according to claim 1, characterized in that a check screw (10) is installed between the upper joint (101) and the initiation joint (102).
5. The magnetoelectric initiation device for oil and gas fields according to claim 1, characterized in that the upper half of the firing pin (3) is provided with a plurality of layers of first sealing rings (11); a second sealing ring (12) is arranged between the upper joint (101) and the detonating joint (102); and a third sealing ring (13) is arranged on the outer surface of the initiation joint (102).
6. The magnetoelectric initiation device for oil and gas fields according to claim 1, characterized in that the housing (1) is provided with a plurality of hook holes (14).
7. A detonation circuit of a magnetoelectric detonation device for oil and gas fields according to any one of claims 1 to 6, characterized by comprising a control circuit of an electromagnetic relay and a detonation circuit arranged on an electric detonator, wherein the detonation circuit is connected with a detonation power supply; the control circuit of the electromagnetic relay is connected with the closed coil;
the enlightening circuit, the control circuit and the detonation circuit are connected in sequence through conducting wires.
8. A method for using the magnetoelectric initiation device for the oil and gas fields according to any one of claims 1 to 6, which is characterized by comprising the following steps:
determining the magnetic field intensity of a firing pin, the length of a closed coil and the speed of a magnet penetrating through the closed coil according to the starting current required by an electromagnetic relay;
step two, the oil-gas field is placed at a specified position by a magnetoelectric initiation device, a wellhead starts to be pressed, a firing pin shears a shearing pin under the action of pressure, the firing pin continues to descend, and when the firing pin penetrates through a closed coil, the closed coil generates current; when the current reaches the starting current of the electromagnetic relay, the switch of the electromagnetic relay is closed, so that the initiation circuit of claim 6 is conducted, the initiation power supply supplies power to the electric detonator, the electric detonator is initiated, and one-time initiation is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210001290.6A CN114412426A (en) | 2022-01-04 | 2022-01-04 | Magnetoelectric initiation device for oil and gas field, use method and initiation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210001290.6A CN114412426A (en) | 2022-01-04 | 2022-01-04 | Magnetoelectric initiation device for oil and gas field, use method and initiation circuit |
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| Publication Number | Publication Date |
|---|---|
| CN114412426A true CN114412426A (en) | 2022-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210001290.6A Pending CN114412426A (en) | 2022-01-04 | 2022-01-04 | Magnetoelectric initiation device for oil and gas field, use method and initiation circuit |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2095395U (en) * | 1990-11-16 | 1992-02-05 | 胜利石油管理局测井公司 | Safety electric primer for oil well |
| US5322019A (en) * | 1991-08-12 | 1994-06-21 | Terra Tek Inc | System for the initiation of downhole explosive and propellant systems |
| US20100206633A1 (en) * | 2009-02-18 | 2010-08-19 | Halliburton Energy Services, Inc. | Pressure Cycle Operated Perforating Firing Head |
| CN201915920U (en) * | 2010-12-23 | 2011-08-03 | 中国石油集团渤海钻探工程有限公司 | Hydraulic shockproof igniter |
| US20150013560A1 (en) * | 2012-02-29 | 2015-01-15 | Detnet South Africa (Pty) Ltd | Electronic detonator |
| US20210254443A1 (en) * | 2018-05-29 | 2021-08-19 | Bo QU | Method and device for conducting explosive-fracturing |
-
2022
- 2022-01-04 CN CN202210001290.6A patent/CN114412426A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2095395U (en) * | 1990-11-16 | 1992-02-05 | 胜利石油管理局测井公司 | Safety electric primer for oil well |
| US5322019A (en) * | 1991-08-12 | 1994-06-21 | Terra Tek Inc | System for the initiation of downhole explosive and propellant systems |
| US20100206633A1 (en) * | 2009-02-18 | 2010-08-19 | Halliburton Energy Services, Inc. | Pressure Cycle Operated Perforating Firing Head |
| CN201915920U (en) * | 2010-12-23 | 2011-08-03 | 中国石油集团渤海钻探工程有限公司 | Hydraulic shockproof igniter |
| US20150013560A1 (en) * | 2012-02-29 | 2015-01-15 | Detnet South Africa (Pty) Ltd | Electronic detonator |
| US20210254443A1 (en) * | 2018-05-29 | 2021-08-19 | Bo QU | Method and device for conducting explosive-fracturing |
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