CN112012699A - Perforation detonation method and perforation detonation device - Google Patents
Perforation detonation method and perforation detonation device Download PDFInfo
- Publication number
- CN112012699A CN112012699A CN201910451392.6A CN201910451392A CN112012699A CN 112012699 A CN112012699 A CN 112012699A CN 201910451392 A CN201910451392 A CN 201910451392A CN 112012699 A CN112012699 A CN 112012699A
- Authority
- CN
- China
- Prior art keywords
- detonation
- signal
- wireless
- processing unit
- signal processing
- Prior art date
- 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
- 238000005474 detonation Methods 0.000 title claims abstract description 172
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000012545 processing Methods 0.000 claims abstract description 117
- 239000000523 sample Substances 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 9
- 238000004148 unit process Methods 0.000 claims description 7
- 238000010183 spectrum analysis Methods 0.000 claims description 6
- 230000000977 initiatory effect Effects 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 7
- 238000010304 firing Methods 0.000 description 23
- 230000005540 biological transmission Effects 0.000 description 11
- 230000003321 amplification Effects 0.000 description 8
- 238000003199 nucleic acid amplification method Methods 0.000 description 8
- 238000004880 explosion Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
-
- 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
-
- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
-
- 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
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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)
- Geophysics (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The application discloses a perforation detonation method and a perforation detonation device, wherein the perforation detonation method comprises the following steps: the signal transmitting unit is thrown into a well through an oil pipe, one or more kinds of wireless signals are transmitted in the well, the signal receiving unit located on a target layer receives the wireless signals, the signal processing unit located on the target layer processes the wireless signals to obtain wireless information, the signal processing unit compares the wireless information with preset detonation information corresponding to each stage of detonators, if the wireless information is matched with the detonation information, the signal processing unit sends out detonation signals, switches of the detonators at all stages are controlled to be closed, and the detonators are electrified to detonate. The wireless detonation control system is capable of controlling detonation wirelessly, is suitable for all well types and well conditions, can eliminate the risk of mistaken detonation caused by drilling and falling objects in the well, and is higher in controllability and safety. The invention can realize the detonation of detonators with different levels according to different wireless signals.
Description
Technical Field
The invention relates to the technical field of drilling engineering, in particular to a perforation detonation method. The invention also relates to a perforation detonating device.
Background
Perforation is an operation that a special energy-gathering material enters a preset horizon of a borehole to perform explosion perforation to allow fluid in underground strata to enter the perforation, is generally applied to oil-gas fields and coal fields, and is sometimes applied to the exploitation of water sources. The current common perforation operation can be divided into three modes: conventional cable operation, cable transportation through tubing perforation and tubing transmission perforation.
The basic principle of the oil pipe transmission perforation is that all perforators of oil-gas layers to be perforated by each well are connected in series to be connected to the tail end of a tubing string to form a hard-connected string to be put into the well. The perforator is detonated after depth correction and alignment to the perforation horizon by measuring a radioactive curve or a magnetic positioning curve in the oil pipe. The detonation modes of oil pipe transmission perforation mainly include two modes: the method comprises a pressurizing detonation mode and a rod throwing detonation mode, wherein the pressurizing detonation mode refers to a mode of pressurizing the interior of a well by pressure equipment, so that a pin of a pressure detonator is cut off, a initiating piece is fired, and a perforator is detonated. But the construction precondition requires well mouth blowout prevention and higher construction cost, and is not suitable for lost circulation wells and hole patching wells. The rod throwing detonation mode is that a metal rod is thrown from a well mouth, and the metal rod impacts an impact type detonator which is pre-arranged in a well to cut off a pin, strike a firing workpiece and detonate a perforator. Both the two detonation modes take a mechanical shearing pin as a guide condition to finish the detonation. Therefore, the two detonation modes have potential safety hazards. For example, the pressurized detonation mode may cause pressure surges due to churn drilling and the like, resulting in false detonations; the shot rod detonation mode can cause false detonation due to ground impact, underground falling objects and the like.
In conclusion, how to solve the problem that the existing detonation mode related to the transmission perforation is not high in reliability and has potential safety hazard of mistaken detonation becomes a problem to be solved urgently by technical personnel in the field.
Disclosure of Invention
In view of the above, the present invention provides a perforation detonation method to improve the reliability and safety of perforation detonation.
Another object of the present invention is to provide a perforation detonation device based on the perforation detonation method, so as to improve the reliability and safety of perforation detonation.
In order to achieve the purpose, the invention provides the following technical scheme:
a perforation detonation method includes the steps that a signal transmitting unit is thrown into a well through an oil pipe, one or more wireless signals are transmitted in the well, a signal receiving unit located on a target layer receives the wireless signals, a signal processing unit located on the target layer processes the wireless signals to obtain wireless information, the wireless information is compared with preset detonation information corresponding to detonators of all levels by the signal processing unit, if the wireless information is matched with the detonation information, the signal processing unit sends out detonation signals, switches of the detonators of all levels are controlled to be closed, and the detonators are detonated by the aid of electricity.
Preferably, in the above perforation firing method, the signal processing unit processes the wireless signal to obtain wireless information specifically: the signal processing unit carries out spectrum analysis on the wireless signals, the obtained wireless information is the frequency and the amplitude of the wireless signals, and each wireless signal corresponds to one frequency and amplitude.
Preferably, in the perforation firing method, the signal processing unit compares the collected pressure and/or temperature of the target layer with the preset pressure and/or temperature of the target layer while comparing the wireless information with the firing information, and if the wireless information matches with the firing information and the collected pressure and/or temperature of the target layer matches with the preset pressure and/or temperature of the target layer, the signal processing unit sends the firing signal.
Preferably, in the above perforation firing method, when the wireless information matches with the firing information and within a firing time period set by a time chip, the signal processing unit sends a firing signal.
Preferably, in the above perforation detonation method, the signal transmitting unit transmits one or more wireless signals in the well specifically: the signal transmitting unit outputs wireless signals in a well at regular time, and transmits the amplified wireless signals after amplifying the wireless signals.
Preferably, in the above perforation firing method, before the signal processing unit processes the wireless signal, the method further includes amplifying, filtering and performing analog-to-digital conversion on the wireless signal to obtain a digital signal; and the signal processing unit processes the digital signal to obtain the wireless information.
The invention also provides a perforating and detonating device, comprising:
the signal transmitting unit is used for throwing the oil pipe into the well and transmitting one or more wireless signals in the well;
the signal receiving unit is conveyed to a target layer through an oil pipe and used for receiving the wireless signal;
the signal processing unit is connected with the signal receiving unit and is in conductive connection with the detonator, detonation information corresponding to each level of the detonator is preset in the signal processing unit, the signal processing unit is used for processing wireless signals to obtain wireless information, the signal processing unit compares the wireless information with the detonation information, and if the wireless information is matched with the detonation information, the signal processing unit sends out a detonation signal to control the switch of the detonator to be closed, and the detonator is electrified to detonate.
Preferably, in the above perforation firing device, the signal processing unit processes the wireless signal to obtain wireless information specifically: and the signal processing unit performs spectrum analysis on the wireless signals, and the obtained wireless information is the frequency and amplitude of the wireless signals.
Preferably, in the perforation firing device, the perforation firing device further includes an auxiliary measuring probe in signal connection with the signal processing unit, and is configured to detect pressure and/or temperature of a target layer, the signal processing unit is also preset with pressure and/or temperature corresponding to the target layer, and the signal processing unit is further configured to compare pressure and/or temperature acquired by the auxiliary measuring probe with preset pressure and/or temperature when the wireless information matches with the firing information, and if the acquired pressure and/or temperature of the target layer matches with the preset pressure and/or temperature, the signal processing unit sends a firing signal.
Preferably, in the above perforation detonation device, the signal emitting unit includes:
the transmission controller is used for setting wireless information of the wireless signals and timing transmission time;
the transmitting circuit is connected with a transmitting controller, and the transmitting controller controls the transmitting circuit to output and close a wireless signal;
and the transmitting antenna is connected with the transmitting circuit and used for transmitting the wireless signal.
Preferably, in the perforation detonation device, the signal transmitting unit further comprises a power amplifier, and the power amplifier is connected with the transmitting circuit and is used for increasing the transmitting power of the wireless signal.
Preferably, in the above perforation detonation device, the signal receiving unit includes:
a receiving antenna for receiving the wireless signal;
the amplifier is connected with the receiving antenna and used for amplifying the wireless signal;
a filter connected to the amplifier;
and the analog-to-digital converter is connected with the filter and the signal processing unit.
Preferably, in the above perforation detonation device, the perforation detonation device further includes a clock chip connected to the signal processing unit, the clock chip is configured to generate an interruption output signal outside a set detonation time period and control the detonator to stop detonating, and the signal processing unit is configured to set the detonation time period and a frequency of the interruption output signal.
Preferably, in the above perforation detonation device, a memory chip is further included, connected to the signal processing unit, for storing time, pressure and temperature.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a perforation detonation method, wherein a signal transmitting unit is thrown into a well through an oil pipe and transmits one or more wireless signals in the well, a signal receiving unit positioned on a target layer receives the wireless signals, a signal processing unit positioned on the target layer processes the wireless signals to obtain wireless information, the signal processing unit compares the wireless information with preset detonation information corresponding to each detonator, and if the wireless information is matched with the detonation information, the signal processing unit sends out a detonation signal to control the switch of each stage of the detonator to be closed, and the detonator is electrified to detonate. The wireless detonation control system is capable of controlling detonation wirelessly, is suitable for all well types and well conditions, can eliminate the risk of mistaken detonation caused by drilling and falling objects in the well, and is higher in controllability and safety. The invention can realize the detonation of detonators with different levels according to different wireless signals.
The invention provides a perforation detonating device, which comprises a signal transmitting unit, a signal receiving unit and a signal processing unit, wherein the signal transmitting unit is thrown into net weight through an oil pipe and transmits one or more wireless signals in a well; the signal receiving unit is conveyed to a target layer along with an oil pipe and used for receiving wireless signals; the signal processing unit is connected with the signal receiving unit and is in conductive connection with the detonators, detonation information corresponding to each level of the detonators is preset in the signal processing unit, the signal processing unit is used for processing wireless signals to obtain wireless information, the signal processing unit compares the wireless information with the detonation information, if the wireless information is matched with the detonation information, the signal processing unit sends out the detonation signals to control the switches of the detonators at all levels to be closed, and the detonators are electrified to detonate. The wireless detonation control system is capable of controlling detonation wirelessly, is suitable for all well types and well conditions, can eliminate the risk of mistaken detonation caused by drilling and falling objects in the well, and is higher in controllability and safety. The invention can realize the detonation of detonators with different levels according to different wireless signals.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic diagram of a perforation initiation device according to an embodiment of the present invention.
Wherein, 1 is a signal transmitting unit, 11 is a transmitting controller, 12 is a power amplifier, 13 is a transmitting circuit, 14 is a transmitting antenna, 2 is a signal receiving unit, 21 is a receiving antenna, 22 is an instrument amplifier, 23 is a precision amplifier, 24 is a filter, 25 is an analog-to-digital converter, 3 is a signal processing unit, 31 is a built-in analog-to-digital converter, 4 is an auxiliary measuring probe, 5 is a clock chip, 6 is a storage unit, 7 is a signal amplifier, and 8 is an igniter switch.
Detailed Description
The core of the invention is to provide a perforation detonation method, which improves the reliability and the safety of perforation detonation.
The invention also provides a perforation detonation device based on the perforation detonation method, and the reliability and the safety of perforation detonation are improved.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a perforation detonation method, including: the signal transmitting unit 1 is thrown into a well through an oil pipe, the signal transmitting unit 1 transmits one or more wireless signals in the well, and the wireless information of each wireless signal is different; the signal receiving unit 2 which is conveyed to a target layer along with an oil pipe receives the wireless signal transmitted by the signal transmitting unit 1 and transmits the wireless signal to the signal processing unit 3; the signal processing unit 3 which is conveyed to a target layer along with an oil pipe processes the wireless signals to obtain wireless information, the signal processing unit 3 compares the wireless information with detonation information of corresponding detonators at all levels preset in the signal processing unit 3, if the wireless information is matched with the detonation information, the signal processing unit sends out detonation signals to control switches of the detonators at all levels to be closed, and the detonators are electrically detonated through the signal processing unit 3.
The method controls detonation through wireless, can be suitable for all well types and well conditions, can eliminate the risk of false detonation caused by drilling and falling objects in the well, and has stronger controllability and higher safety. The invention can realize the detonation of the detonators in different stages according to different wireless signals, namely, the multi-stage detonation perforation can be realized in one well.
Further, in this embodiment, the signal processing unit 3 processes the wireless signal to obtain the wireless information, specifically: the signal processing unit 3 performs spectrum analysis on the wireless signals, and the obtained wireless information is the frequency and amplitude of the wireless signals, and each wireless signal corresponds to one frequency and amplitude. The wireless signal is preferably a square wave signal. Correspondingly, the preset detonation information in the signal processing unit 3 is the frequency and amplitude corresponding to each detonator, when the frequency and amplitude of a wireless signal are the same as the preset frequency and amplitude, the signal processing unit sends out a detonation signal, the detonation signal controls the closure of a detonator switch 8 of the detonator corresponding to the frequency and amplitude, and the detonator is electrified to detonate.
Further, in this embodiment, the signal processing unit 3 compares the collected pressure and/or temperature of the target layer with the preset pressure and/or temperature of the target layer while comparing the wireless information with the detonation information, and if the wireless information matches with the detonation information and the collected pressure and/or temperature of the target layer matches with the preset pressure and/or temperature of the target layer, the signal processing unit 3 sends the detonation signal. Usually, the pressure and the temperature of each target layer in the well are different and have certain stability, and the target layer can be judged according to the pressure and the temperature. Therefore, in order to improve the accuracy of the perforation detonation position, when the wireless information is matched with the preset detonation information, the acquired pressure and/or temperature is matched with the preset pressure and/or temperature, namely the acquired pressure and/or temperature is in the range of the preset pressure and/or temperature, the signal processing unit sends out a detonation signal, controls the switch of the detonator corresponding to the frequency and the amplitude to be closed, and the detonator is electrified to detonate. So set up, can also further reduce the mistake explosion rate, avoid detonating at non-purpose layer, security and reliability are higher.
Further, in this embodiment, when the wireless information matches with the detonation information and within the detonation time period set by the time chip 5, the signal processing unit sends the detonation signal, and if the time chip 5 sends the interrupt output signal outside the detonation time period, the signal processing unit 3 is controlled to interrupt sending the detonation signal. The normal detonation time period is set to be 10 hours to 30 hours according to the time of the detonator being lowered to the target layer, and the time is counted from the lowering of the oil pipe, for example, before 10 hours, the detonator is not lowered to the target layer, so in the process, the time chip 5 sends out an interrupt output signal, and even if the wireless information of the wireless signal is matched with the detonation information, the signal processing unit 3 does not send out the detonation signal; for another example, the detonator stays for more than 30 hours in the underground, the detonator which is not detonated exists due to engineering reasons, but the oil pipe needs to be lifted, and the detonator is proposed, so that the time chip 5 sends an interrupt output signal and the signal processing unit does not send a detonation signal to avoid the error detonation caused by the matching of a wireless signal which is transmitted by mistake and detonation information, so that the error detonation rate is further reduced, and the safety and the reliability are improved.
Of course, more preferably, when three conditions that the wireless information is matched with the detonation information, the acquired pressure and/or temperature is matched with the preset pressure and/or temperature and within the detonation time period set by the time chip 5 are met, the signal processing unit 3 sends out the detonation signal, so as to further reduce the false detonation rate and improve the reliability and the safety.
In this embodiment, the signal transmitting unit 1 transmits one or more wireless signals in the well specifically: the signal transmitting unit 1 outputs wireless signals in a well at regular time, amplifies the wireless signals and transmits the amplified wireless signals. That is, after the signal transmitting unit 1 is put into the oil pipe and the timing time is reached, the signal transmitting unit 1 transmits the wireless signal, and the timing time is usually determined according to the time required for the signal transmitting unit 1 to put into the target layer in the oil pipe. After the signal transmitting unit 1 is thrown into the oil pipe, the signal transmitting unit 1 can transmit wireless signals after being away from the signal receiving unit 2 by a certain distance, and therefore the problem that the wireless signals are transmitted when the signal transmitting unit 1 is thrown into the oil pipe because the detonator and the signal receiving unit 2 do not reach a target layer due to the fact that the oil pipe is blocked for a period of time and the like is solved, matching of the wireless signals and the detonation information is probably completed, and the detonator is detonated by mistake on a non-target layer is caused. Therefore, the wireless signal transmission of the signal transmitting unit 1 is timed, and the detonator is located at the destination layer within the timed time, so that the accuracy of the detonation position can be realized. If the detonator has not detonated beyond the timed time, the signal transmitting unit 1 does not transmit a wireless signal any more, the detonator does not detonate any more, and a signal transmitting unit 1 having the same wireless signal configuration can be put into operation again. So set up, further reduced the mistake explosion rate, improved reliability and security.
The wireless signal is amplified to improve the strength of the wireless signal so that the signal receiving unit 2 can more easily receive the wireless signal.
In this embodiment, before the signal processing unit 3 processes the wireless signal, the method further includes amplifying, filtering, and performing analog-to-digital conversion on the wireless signal to obtain a digital signal; the signal processing unit 3 processes the digital signal to obtain wireless information. After receiving the wireless signal, the signal receiving unit 2 further amplifies and filters the wireless signal, so as to improve the accuracy and reliability of wireless information transmission of the wireless signal. The wireless signal can be subjected to primary amplification, secondary amplification and the like, and the filtering can be subjected to primary filtering, secondary filtering and the like. And converting the wireless signals into digital signals so as to facilitate data processing.
As shown in fig. 1, based on the perforation detonation method described in any of the above embodiments, the embodiment of the present invention further provides a perforation detonation device, which includes a signal transmitting unit 1, a signal receiving unit 2, and a signal processing unit 3; the signal transmitting unit 1 is used for throwing the oil pipe into a well and transmitting one or more wireless signals in the well; the signal receiving unit 2 is conveyed to a target layer along with an oil pipe and used for receiving wireless signals; the signal processing unit 3 is connected with the signal receiving unit 2 and is in conductive connection with the detonator, detonation information corresponding to each stage of the detonator is preset in the signal processing unit 3, the signal processing unit 3 is used for processing the wireless signals to obtain the wireless information, the signal processing unit 3 compares the wireless information with the detonation information, and if the wireless information is matched with the detonation information, the signal processing unit 3 sends out a detonation signal to control the closure of a detonator switch 8 of the detonator, and the detonator is electrified to detonate.
The working process of the perforation detonating device is as follows: after the signal receiving unit 2 and the signal processing unit 3 are configured on the ground, the oil pipe descends to a target layer; then wireless information of wireless signals of the signal transmitting unit 1 is configured at a wellhead, the signal transmitting unit 1 is thrown down along an oil pipe at the wellhead, and descends in the oil pipe by means of self gravity, the signal transmitting unit 1 transmits the wireless signals in the well, after a certain distance is left from the signal receiving unit 2, the signal receiving unit 2 receives the wireless signals and transmits the wireless signals to the signal processing unit 3, the signal processing unit 3 processes the wireless signals to obtain the wireless information, the signal processing unit 3 compares the wireless information with preset detonation information corresponding to each detonator, if the wireless information is matched with the preset detonation information, a detonation signal is sent out, a switch of the mismatched detonator is controlled to be closed, the signal processing unit 3 is electrified, the detonator detonators detonate, and if the wireless information is not matched with the detonation information, the detonation signal is not sent out, and the detonation is not sent out.
The perforating detonation device is detonated through wireless control, can be suitable for all well types and well conditions, can eliminate the risk of mistaken detonation caused by drilling and underground falling objects, and has stronger controllability and higher safety. The invention can realize the detonation of the detonators in different stages according to different wireless signals, namely, the multi-stage detonation perforation can be realized in one well.
Further, the signal processing unit 3 processes the wireless signal to obtain wireless information, specifically: the signal processing unit 3 performs spectrum analysis on the wireless signal, and the obtained wireless information is the frequency and amplitude of the wireless signal. Each radio signal corresponds to a frequency and amplitude. The wireless signal is preferably a square wave signal. Correspondingly, the preset detonation information in the signal processing unit 3 is the frequency and amplitude corresponding to each detonator, when the frequency and amplitude of a wireless signal are the same as the preset frequency and amplitude, the signal processing unit 3 sends out a detonation signal, the detonation signal controls the switch of the detonator corresponding to the frequency and amplitude to be closed, and the detonator is electrified to detonate.
Furthermore, in this embodiment, the perforation firing device further includes an auxiliary measuring probe 4 in signal connection with the signal processing unit 3, and is configured to detect pressure and/or temperature of a target layer, the signal processing unit 3 is also preset with pressure and/or temperature corresponding to the target layer, and the signal processing unit 3 is further configured to compare the pressure and/or temperature acquired by the auxiliary measuring probe 4 with the preset pressure and/or temperature when the wireless information matches with the firing information, and if the acquired pressure and/or temperature of the target layer matches with the preset pressure and/or temperature, the signal processing unit 3 sends a firing signal. Usually, the pressure and the temperature of each target layer in the well are different and have certain stability, and the target layer can be judged according to the pressure and the temperature. Therefore, in order to improve the accuracy of the perforation detonation position, when the wireless information is matched with the preset detonation information, the acquired pressure and/or temperature is matched with the preset pressure and/or temperature, namely the acquired pressure and/or temperature is in the range of the preset pressure and/or temperature, the signal processing unit 3 sends out a detonation signal, controls the switch of the detonator corresponding to the frequency and the amplitude to be closed, and the detonator is electrified to detonate. So set up, can also further reduce the mistake explosion rate, avoid detonating at non-purpose layer, security and reliability are higher.
Further, in this embodiment, the perforation detonation device further includes a clock chip 5, the clock chip 5 is connected to the signal processing unit 3, the clock chip 5 is configured to generate an interrupt output signal outside the set detonation time period, and control the detonator to stop detonating, and the signal processing unit 3 is configured to set the detonation time period and the frequency of the interrupt output signal. When the wireless information is matched with the detonation information and within the detonation time period set by the time chip 5, the signal processing unit 3 sends out a detonation signal, and if the time chip 5 sends out an interrupt output signal outside the detonation time period, the signal processing unit 3 is controlled to interrupt the sending of the detonation signal. The false explosion rate is further reduced through the clock chip 5, and the safety and the reliability are improved. For the reason, please refer to the description of the above perforation detonation method on the clock chip 5, which is not described herein again.
Of course, more preferably, the perforation firing device includes the auxiliary measuring probe 4 and the clock chip 5 at the same time, when three conditions that the wireless information matches with the firing information, the acquired pressure and/or temperature matches with the preset pressure and/or temperature, and at the same time, the firing signal is sent by the signal processing unit 3 within the firing time period set by the time chip 5 are met, so as to further reduce the false explosion rate and improve the reliability and safety.
As shown in fig. 1, in the present embodiment, the signal transmitting unit 1 includes a transmission controller 11, a transmission circuit 13, and a transmission antenna 14. The launch controller 11 is configured to set wireless information of the wireless signal and time for timed launch, and the launch controller 11 is preferably an MCU (Micro control unit), such as a single chip or a PLC, which has a small volume and is convenient for throwing.
The transmitting circuit 13 is connected with the transmitting controller 11, the transmitting circuit 13 generates a wireless signal, such as a square wave signal, and the transmitting controller 11 controls the transmitting circuit 13 to output and close the wireless signal; the transmitting antenna 14 is connected to the transmitting circuit 13 for transmitting wireless signals, and the transmitting antenna 14 is preferably a dipole antenna.
Further, in this embodiment, the signal transmitting unit 3 further includes a power amplifier 12, an input terminal of the power amplifier 12 is connected to the transmission controller 11, and an output terminal of the power amplifier 12 is connected to the transmitting circuit 13, for increasing the transmitting power of the wireless signal. The power amplifier 12 is preferably a gate drive circuit. The transmitting circuit 13 adds an RC snubber network across the output of the power amplifier 12 to reduce the spikes when the gate circuit is turned on and off.
In the present embodiment, the signal receiving unit 2 includes a receiving antenna 21, an amplifier, a filter 24, and an analog-to-digital converter 25; the receiving antenna 21 is used for receiving wireless signals; the amplifier is connected with the receiving antenna 21 and used for amplifying weak wireless signals and improving the measurement sensitivity, the amplifier can perform primary amplification or secondary amplification and the like, preferably, the amplifier comprises an instrument amplifier 22 and a precision amplifier 23, the instrument amplifier 22 performs primary amplification and converts double-end signals into single-end signals, the precision amplifier 23 performs secondary amplification on the single-end signals and realizes filtering, and the filter 24 is a band-pass filter and realizes extraction of useful signals and filtering of useless signals; the analog-to-digital converter 25 is connected to the filter 24 and the signal processing unit 3 to perform digitization of the received analog signal.
Further, the perforation detonation device further comprises a storage chip 6, and the storage chip 6 is connected with the signal processing unit 3 and used for storing time, pressure and temperature.
The working process of the perforation detonating device is as follows: the signal receiving unit 2 is well configured on the ground, the signal processing unit 3 is also well configured with the detonation time period and frequency of the interrupt output signal of the clock chip 5, and the signal receiving unit 2 and the signal processing unit 3 descend to a target layer along with the oil pipe; then configuring the frequency and amplitude of the wireless signal of the signal transmitting unit 1 and the timing time (namely start and stop time) of the transmitted signal at the wellhead, then throwing the signal transmitting unit 1 down the oil pipe at the wellhead, descending the signal in the oil pipe by means of self gravity, and when the timing time is up, controlling a transmitting circuit 13 by a transmitting controller 11 to generate a 20KHz square wave signal, sending the square wave signal to a power amplifier 12 and transmitting the square wave signal to a transmitting antenna 14; when a certain distance is kept from the signal receiving unit 2, the receiving antenna 21 receives a wireless signal, and simultaneously, the wireless signal is sent to the instrument amplifier 22 for first-stage amplification, a double-end signal is converted into a single-end signal, then the single-end signal is sent to the precision amplifier 23 and the filter 24 for second-stage amplification and filtering, the filtered signal is sent to the analog-to-digital converter 25 for digitization, and then is sent to the signal processing unit 3 for frequency spectrum analysis, and further information such as frequency, amplitude and the like of the wireless signal is solved; meanwhile, the signal processing unit 3 digitizes information such as underground real-time temperature, pressure and the like measured by the auxiliary measuring probe 4 through the built-in analog-to-digital converter 31, compares the frequency and amplitude of a wireless signal with preset detonation information in the detonation time period of the clock chip 5, and compares the underground temperature and pressure with the preset temperature and pressure, if the underground real-time temperature and pressure meet the conditions, the detonation signal is sent, otherwise, the detonation signal is not sent if the underground real-time temperature and pressure do not meet the conditions; the signal processing unit 3 stores the temperature, the pressure and the current real-time information measured by the auxiliary measuring probe 4 into the storage chip 6 for later analysis and processing of the underground working environment.
The perforating and detonating device is completely different from the existing shooting impact detonating mode, pressure detonating mode, electric energy detonating mode and the like, and the mode is more reliable and controllable. The timing of the on/off of the transmitting circuit 13 can be realized, and the influence on other parts of the signal transmitting unit 1 and the power consumption can be effectively reduced. The perforation detonation device can be used for ground detection, the reliability and the stability of the perforation detonation device are verified, the reliability of the device in underground work can be further improved, and the false detonation and non-detonation rate are reduced. The perforation detonation device can realize one-time well descending and multi-stage detonation.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A perforation detonation method is characterized in that a signal transmitting unit is thrown into a well through an oil pipe to transmit one or more wireless signals in the well, a signal receiving unit located on a target layer receives the wireless signals, a signal processing unit located on the target layer processes the wireless signals to obtain wireless information, the signal processing unit compares the wireless information with preset detonation information of detonators corresponding to all levels, if the wireless information is matched with the detonation information, the signal processing unit sends out detonation signals to control switches of all levels of the detonators to be closed, and the detonators are electrified to detonate.
2. The perforation detonation method according to claim 1, wherein the signal processing unit processes the wireless signal to obtain wireless information, specifically: the signal processing unit carries out spectrum analysis on the wireless signals, the obtained wireless information is the frequency and the amplitude of the wireless signals, and each wireless signal corresponds to one frequency and amplitude.
3. The perforation detonation method according to claim 1, wherein the signal processing unit compares the collected pressure and/or temperature of the target layer with a preset pressure and/or temperature of the target layer while comparing the wireless information with the detonation information, and if the wireless information matches the detonation information and the collected pressure and/or temperature of the target layer matches the preset pressure and/or temperature of the target layer, the signal processing unit sends out a detonation signal.
4. The perforation detonation method according to claim 1 or 3, wherein the signal processing unit sends out a detonation signal when the wireless information is matched with the detonation information and within a detonation time period set by a time chip.
5. Perforation detonation method according to claim 1, characterised in that said signal emitting unit emits one or more wireless signals in the well, in particular: the signal transmitting unit outputs wireless signals in a well at regular time, and transmits the amplified wireless signals after amplifying the wireless signals.
6. The perforation detonation method according to claim 1, further comprising amplifying, filtering and analog-to-digital converting the wireless signal to obtain a digital signal before the signal processing unit processes the wireless signal; and the signal processing unit processes the digital signal to obtain the wireless information.
7. A perforation initiation device, comprising:
the signal transmitting unit is used for throwing the oil pipe into the well and transmitting one or more wireless signals in the well;
the signal receiving unit is conveyed to a target layer through an oil pipe and used for receiving the wireless signal;
the signal processing unit is connected with the signal receiving unit and is in conductive connection with the detonator, detonation information corresponding to each level of the detonator is preset in the signal processing unit, the signal processing unit is used for processing wireless signals to obtain wireless information, the signal processing unit compares the wireless information with the detonation information, and if the wireless information is matched with the detonation information, the signal processing unit sends out a detonation signal to control the switch of the detonator to be closed, and the detonator is electrified to detonate.
8. The perforating and detonating device of claim 7, further comprising an auxiliary measuring probe in signal connection with the signal processing unit for detecting the pressure and/or temperature of the target layer, wherein the signal processing unit is also preset with the pressure and/or temperature of the target layer, and the signal processing unit is also used for comparing the pressure and/or temperature collected by the auxiliary measuring probe with the preset pressure and/or temperature when the wireless information is matched with the detonating information, and sending a detonating signal if the collected pressure and/or temperature of the target layer is matched with the preset pressure and/or temperature.
9. The perforating detonation device of claim 7, further comprising a clock chip connected to the signal processing unit, wherein the clock chip is configured to generate an interrupt output signal outside a set detonation time period to control the detonator to stop detonating, and the signal processing unit is configured to set the detonation time period and a frequency of the interrupt output signal.
10. The perforating detonator of claim 8 further comprising a memory chip coupled to the signal processing unit for storing time, pressure and temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910451392.6A CN112012699A (en) | 2019-05-28 | 2019-05-28 | Perforation detonation method and perforation detonation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910451392.6A CN112012699A (en) | 2019-05-28 | 2019-05-28 | Perforation detonation method and perforation detonation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112012699A true CN112012699A (en) | 2020-12-01 |
Family
ID=73501275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910451392.6A Pending CN112012699A (en) | 2019-05-28 | 2019-05-28 | Perforation detonation method and perforation detonation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112012699A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030000411A1 (en) * | 2001-06-29 | 2003-01-02 | Cernocky Edward Paul | Method and apparatus for detonating an explosive charge |
| CN201306157Y (en) * | 2007-09-28 | 2009-09-09 | 普拉德研究及开发股份有限公司 | Pipe column and perforation column for device in a well |
| CN201810303U (en) * | 2010-09-28 | 2011-04-27 | 中国石油集团川庆钻探工程有限公司 | Wireless transmission device for directly reading downhole testing data by crossing test valve |
| CN203856458U (en) * | 2014-04-25 | 2014-10-01 | 西安物华巨能爆破器材有限责任公司 | Pressure code detonating device |
| CN104297777A (en) * | 2013-07-15 | 2015-01-21 | 中国石油化工股份有限公司 | Full-automatic seismic exploration digital signal remote detonation system and remote detonation method thereof |
| CN106837264A (en) * | 2017-01-17 | 2017-06-13 | 成都众智诚成石油科技有限公司 | A kind of down-hole casing perforating gun control system and control method |
-
2019
- 2019-05-28 CN CN201910451392.6A patent/CN112012699A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030000411A1 (en) * | 2001-06-29 | 2003-01-02 | Cernocky Edward Paul | Method and apparatus for detonating an explosive charge |
| CN201306157Y (en) * | 2007-09-28 | 2009-09-09 | 普拉德研究及开发股份有限公司 | Pipe column and perforation column for device in a well |
| CN201810303U (en) * | 2010-09-28 | 2011-04-27 | 中国石油集团川庆钻探工程有限公司 | Wireless transmission device for directly reading downhole testing data by crossing test valve |
| CN104297777A (en) * | 2013-07-15 | 2015-01-21 | 中国石油化工股份有限公司 | Full-automatic seismic exploration digital signal remote detonation system and remote detonation method thereof |
| CN203856458U (en) * | 2014-04-25 | 2014-10-01 | 西安物华巨能爆破器材有限责任公司 | Pressure code detonating device |
| CN106837264A (en) * | 2017-01-17 | 2017-06-13 | 成都众智诚成石油科技有限公司 | A kind of down-hole casing perforating gun control system and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101349532B (en) | Safe blasting system capable of alarming misfire information | |
| US20100051265A1 (en) | Firing trigger apparatus and method for downhole tools | |
| US5908365A (en) | Downhole triggering device | |
| US5369579A (en) | Electronic blast control system for downhole well operations | |
| EA030072B1 (en) | Method for automatic control and positioning of autonomous downhole tools | |
| CN111919011B (en) | Autonomous tool | |
| US11286756B2 (en) | Slickline selective perforation system | |
| US4656944A (en) | Select fire well perforator system and method of operation | |
| CN201269721Y (en) | Apparatus for alarming misfire information of blasting equipment | |
| CN108317922B (en) | Graded perforation exploder circuit based on cable coding and control method | |
| CN112065338A (en) | Wireless initiation device for perforation and initiation method thereof | |
| CN112012699A (en) | Perforation detonation method and perforation detonation device | |
| CN203856458U (en) | Pressure code detonating device | |
| CN201256350Y (en) | Oil pipe conveying perforation linear electricity generator | |
| US9064650B2 (en) | Assembly of RF-safe switch and detonator system in a non-RF free environment | |
| US20170175501A1 (en) | System And Method For Performing An Operation | |
| CN110864588A (en) | Digital carbon dioxide rock breaking process and detonation system | |
| CN212428763U (en) | Wireless detonating device for perforation | |
| CN102735120B (en) | Detonator network detonation control method | |
| CN108825179B (en) | Wireless coding detonation control device | |
| CN103336304B (en) | There is remote multiple shot central control detection system and the method for advance geology exploration instrument | |
| CN205332935U (en) | Blow out monitoring devices that miss -fires | |
| CN111411924B (en) | Intelligent perforation initiation method and device and intelligent perforation initiation water well | |
| US11353308B2 (en) | Self-selecting switch devices, perforating gun systems including the self-selecting switch devices, and methods of using the gun systems | |
| CN212409516U (en) | Intelligent detonation device for perforation and oil pipe conveying type intelligent detonation water-filled oil well for perforation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201201 |