CN212428763U - Wireless detonating device for perforation - Google Patents
Wireless detonating device for perforation Download PDFInfo
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- CN212428763U CN212428763U CN202022225862.8U CN202022225862U CN212428763U CN 212428763 U CN212428763 U CN 212428763U CN 202022225862 U CN202022225862 U CN 202022225862U CN 212428763 U CN212428763 U CN 212428763U
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Abstract
The utility model discloses a wireless detonating device for perforation, which comprises a transmitting module and a receiving unit; the transmitting module comprises a signal microcontroller for generating sine wave signals, a driving amplifying circuit electrically connected with the signal microcontroller, a series resonance transmitting circuit electrically connected with the driving amplifying circuit and a transmitting antenna electrically connected with the series resonance transmitting circuit. The utility model discloses an initiating device, mechanical energy such as throwing stick or pressurization to traditional tubing conveyed explodes perforation technology and exists not detonating, detonate in advance, a plurality of safety risks such as mistake detonation, upgrade to the initiation of wireless transmission electric energy, the idea innovation of detonating, intelligent level is high, both can realize that multistage detonation in the oil pipe and one time the time sharing of downhole transportation to a plurality of target level explode, can realize working circuit's time switch again, effectively improve perforation reliability and security.
Description
Technical Field
The utility model belongs to oil gas well perforation field, in particular to a wireless initiating device for perforation in this field.
Background
In the oil pipe conveying process perforation technology, a well head is usually thrown to impact or apply pressure on a piston of an initiation device, the piston of the initiation device is pushed in a mechanical energy mode, an initiating explosive in an initiator is triggered after a pin is sheared, and finally a perforating bullet is detonated to perform perforation.
However, due to the pipe column structure, well conditions, construction coordination and other reasons during the field operation, the following two unexpected situations often occur: 1. the perforator is not successfully detonated underground by means of a rod throwing or pressurizing mode; 2. the perforator is detonated in advance due to the occurrence of pier drilling, slide drilling and underground falling objects before the perforator is not lowered to a preset position. The reason for this is that the pressure detonation mode has the possibility of uncontrollable pressure and downhole pressure leakage, and the electric energy detonation mode is usually susceptible to early detonation caused by electric signal interference such as stray electricity, static electricity, radio frequency electricity, high voltage induced electricity, and the like, i.e. mechanical energy generated by rod throwing or pressurization is not effectively transferred to the initiation device to cause misfire or is transferred to the initiation device in advance to cause false detonation. In addition, the mode of striking and detonating the throwing rod is long, so that the throwing rod cannot work in a coiled tubing or a thin oil tube, and uncontrollable unexpected factors also exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a wireless initiating device for coiled tubing perforation is provided exactly.
The utility model adopts the following technical scheme:
in a wireless initiation device for perforation, the improvement comprising: the device comprises a transmitting module and a receiving unit; the transmitting module comprises a signal microcontroller for generating sine wave signals, a driving amplifying circuit electrically connected with the signal microcontroller, a series resonance transmitting circuit electrically connected with the driving amplifying circuit and a transmitting antenna electrically connected with the series resonance transmitting circuit; the receiving unit comprises a receiving antenna used for receiving electromagnetic signals from the transmitting antenna, a parallel resonance receiving circuit electrically connected with the receiving antenna, an instrument amplifier electrically connected with the parallel resonance receiving circuit, an amplifying and filtering circuit electrically connected with the instrument amplifier, an analog-to-digital converter electrically connected with the amplifying and filtering circuit, a signal processor electrically connected with the analog-to-digital converter, a clock source electrically connected with the signal processor, a pressure sensor, a temperature sensor, a storage unit and a relay control circuit.
Furthermore, the signal microcontroller comprises a DAC module for generating sine wave signals, a serial port for adjusting the frequency of the sine wave signals and a timer for controlling the output time of the sine wave signals.
Furthermore, the driving amplifying circuit comprises an operational amplifier and a triode.
Furthermore, the transmitting antenna is a magnetic antenna formed by winding N turns of annular coils on a manganese-zinc ferrite magnetic bar, and each annular coil is formed by a single-stranded enameled wire.
Furthermore, the receiving antenna is a coil winding formed by winding a single strand of enameled wire on a high-temperature resistant plastic circular tubular column with a certain length.
Furthermore, the series resonance transmitting circuit is an LC series resonance circuit, and the parallel resonance receiving circuit is formed by connecting a receiving antenna coil winding with a capacitor in parallel.
Further, the instrumentation amplifier is a low-noise precision instrumentation amplifier; the amplifying and filtering circuit comprises a secondary amplifying circuit consisting of multi-channel precise operational amplifiers and a second-order narrow-band active band-pass filter.
Further, a pressure sensor and a temperature sensor are integrated in the auxiliary measuring probe.
Further, the signal processor is electrically connected with the relay control circuit through a power amplifier.
In an initiation method using the above-described wireless initiation device for perforation, the improvement comprising the steps of:
(1) after the start working time and the end working time of a signal processor of the receiving unit are configured on the ground, the receiving unit is firstly descended to a target layer along with the coiled tubing;
(2) after the sine wave signal frequency, the starting working time and the ending working time of a signal microcontroller of a transmitting module are configured on the ground, the transmitting module is thrown into a well from an inlet, so that the transmitting module descends in the coiled tubing by means of self gravity;
(3) after the working time is timed, the transmitting module signal microcontroller outputs a sine wave signal, and the sine wave signal drives the series resonance transmitting circuit to perform high-power electromagnetic transmission of the sine wave signal on the transmitting antenna after the current of the sine wave signal is increased by the driving amplifying circuit;
(4) after the working time is counted and the distance between the oil pipe and the transmitting module is smaller than a set value, the receiving antenna starts to receive a weak small signal transmitted by the transmitting antenna;
(5) after a signal received by the receiving antenna passes through the parallel resonance receiving circuit, a small signal near the resonance frequency is amplified by the differential mode conversion single end of the instrument amplifier, is secondarily amplified and filtered by the amplifying and filtering circuit, is acquired by the analog-to-digital converter, is digitally quantized and is input into the signal processor;
(6) the signal processor judges whether the digitally quantized signal is a sine wave signal transmitted by the transmitting module, and simultaneously judges whether a perforation detonation condition is established by combining real-time pressure and temperature information of the underground environment detected by the pressure sensor and the temperature sensor;
(7) and when the signal processor judges that the perforation detonation condition is met, the signal processor sends an instruction to the relay control circuit to enable the detonation signal to be connected for detonation.
The utility model has the advantages that:
the utility model discloses an initiating device, mechanical energy such as throwing stick or pressurization to traditional tubing conveyed explodes perforation technology and exists not detonating, detonate in advance, a plurality of safety risks such as mistake detonation, upgrade to the initiation of wireless transmission electric energy, the idea innovation of detonating, intelligent level is high, both can realize that multistage detonation in the oil pipe and one time the time sharing of downhole transportation to a plurality of target level explode, can realize working circuit's time switch again, effectively improve perforation reliability and security.
The utility model discloses a priming device, transmitting antenna and receiving antenna are the magnetic antenna that coil winding constitutes, and the circuit form is LC oscillating circuit, compares with dipole electric antenna, and the signal propagation decay is reduced in coiled tubing, and wireless communication distance is long; the transmitted signal and the extracted received signal are processed by a precise mathematical algorithm, so that the signals are accurate; the transmitting module and the receiving unit can realize the configuration of the starting working time and the ending working time, improve the safety of the perforator in the process of lowering the oil pipe and the process of lifting the oil pipe, and reduce the false detonation rate caused by external interference.
The utility model discloses a detonation method provides a brand-new idea of detonating, can realize the controllability and the reinforcing reliability of detonating through setting up the circuit, solves useful signal through analysis received signal frequency spectrum and amplitude information to whether the combination judges perforation detonation condition in the pit auxiliary information such as real-time pressure, temperature of gathering, just reachs the detonation signal and detonates the perforator when detonating the condition and is established, has reduced the mistake rate of explosion, and is safe controllable.
Drawings
Fig. 1 is a block diagram of the detonation device disclosed in embodiment 1 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Embodiment 1, as shown in fig. 1, the embodiment discloses a wireless initiation device for perforation, which comprises a transmitting module and a receiving unit; the transmitting module comprises a signal microcontroller for generating sine wave signals, a driving amplifying circuit electrically connected with the signal microcontroller, a series resonance transmitting circuit electrically connected with the driving amplifying circuit and a transmitting antenna electrically connected with the series resonance transmitting circuit; the receiving unit comprises a receiving antenna used for receiving electromagnetic signals from the transmitting antenna, a parallel resonance receiving circuit electrically connected with the receiving antenna, an instrument amplifier electrically connected with the parallel resonance receiving circuit, an amplifying and filtering circuit electrically connected with the instrument amplifier, an analog-to-digital converter electrically connected with the amplifying and filtering circuit, a signal processor electrically connected with the analog-to-digital converter, a clock source electrically connected with the signal processor, a pressure sensor, a temperature sensor, a storage unit and a relay control circuit.
In this embodiment, the signal microcontroller includes a DAC module for generating a sine wave signal, a serial port for adjusting the frequency of the sine wave signal, and a timer for controlling the output time of the sine wave signal. Based on the SPWM equal-area control principle, a table look-up method is adopted to generate sine wave signals with adjustable frequency and controllable time through a DAC module of a microcontroller, and the sine wave signals are used as input signal sources of an emission module.
The driving amplifying circuit comprises an operational amplifier and a triode and is used for carrying out small current amplification driving. The transmitting antenna is a magnetic antenna formed by winding N turns of annular coils on a manganese-zinc ferrite magnetic bar, and each annular coil is formed by a single-stranded enameled wire and is used for carrying out electromagnetic transmission on signals. The receiving antenna is a coil winding formed by winding a single strand of enameled wire on a high-temperature resistant plastic circular tubular column with a certain length and is used for receiving electromagnetic signals from the transmitting antenna.
The series resonance transmitting circuit is an LC series resonance circuit, the output end of the driving circuit is connected with the LC series resonance circuit, and the driving circuit is tuned to enable the resonance frequency of the oscillation circuit to be consistent with the frequency of the sine wave signal, so that Q-time current amplification is realized, and the signal transmitting power is improved.
The parallel resonance receiving circuit is formed by a receiving antenna coil winding and a capacitor, the resonance frequency is consistent with the frequency of a transmitted sine wave signal, Q-time voltage amplification is realized, and the signal receiving signal-to-noise ratio is improved.
The instrument amplifier is a low-noise precision instrument amplifier, and is used for converting a differential mode signal into a single-ended signal for amplifying a weak small signal received by the resonance receiving circuit, so that the measurement sensitivity and the anti-interference capability of the instrument are improved.
The amplifying and filtering circuit comprises a secondary amplifying circuit and a second-order narrow-band active band-pass filter, wherein the secondary amplifying circuit and the second-order narrow-band active band-pass filter are formed by multi-channel precise operational amplifiers, and after the output signals of the instrumentation amplifier are amplified, useless signals are filtered out, and purer required signals are obtained.
The analog-to-digital converter (analog-to-digital converter A \ D) collects the amplified analog receiving signal and carries out digital quantization.
The pressure sensor and the temperature sensor are integrated in the auxiliary measuring probe, and measure the real-time pressure and temperature in the underground well as serve as auxiliary judgment information of the perforation detonation signal.
The clock source is the clock source of the whole downhole receiving unit and the interrupt source of the related module. The storage unit stores information such as real-time, underground pressure, temperature and the like.
The signal processor (DSP) is a main controller and a signal processing unit of the underground receiving unit, and the working state of the signal processor is as follows: the method comprises the following steps: configuring a clock source, and determining a system timing clock and a storage unit interrupt frequency; secondly, the step of: an internal analog-to-digital converter collects underground pressure and temperature, and a DSP controls a storage unit to read and write and store in real time; ③: controlling an external A \ D module to acquire and convert, and reading a receiving signal after digital quantization; fourthly, the method comprises the following steps: after digital filtering processing is carried out on the received signals, spectrum analysis is carried out, and useful signal frequency and amplitude are extracted.
The signal processor is electrically connected with the relay control circuit through the power amplifier. The relay control circuit is controlled by a signal processor (DSP), and when the relay control circuit receives the starting or closing of the control detonation signal, the relay control circuit realizes the connection or disconnection of the detonation signal.
The embodiment also discloses an initiation method, which uses the wireless initiation device for perforation and comprises the following steps:
(1) after the start working time and the end working time of a signal processor of the receiving unit are configured on the ground, the receiving unit is firstly descended to a target layer along with the coiled tubing;
(2) after the sine wave signal frequency, the starting working time and the ending working time of a signal microcontroller of a transmitting module are configured on the ground, the transmitting module is thrown into a well from an inlet, so that the transmitting module descends in the coiled tubing by means of self gravity;
(3) after the working time is timed, the signal microcontroller of the transmitting module outputs a 6KHZ sine wave signal, and the sine wave signal drives the series resonance transmitting circuit to perform high-power electromagnetic propagation of the sine wave signal on the transmitting antenna after the current of the sine wave signal is increased by the driving amplifying circuit;
(4) after the working time is counted and the distance between the oil pipe and the transmitting module is smaller than a set value, the receiving antenna starts to receive a weak small signal transmitted by the transmitting antenna;
(5) after a signal received by the receiving antenna passes through the parallel resonance receiving circuit, a small signal near the resonance frequency is amplified by the differential mode conversion single end of the instrument amplifier, is secondarily amplified and filtered by the amplifying and filtering circuit, is acquired by the analog-to-digital converter, is digitally quantized and is input into the signal processor;
(6) the signal processor processes, analyzes and solves the digitally quantized received signals, judges whether the digitally quantized signals are sine wave signals transmitted by the transmitting module according to the frequency and amplitude of the extracted signals, and judges whether a perforation detonation condition is established or not by combining real-time pressure and temperature information of the underground environment detected by the pressure sensor and the temperature sensor;
(7) and when the signal processor judges that the perforation detonation condition is met, the signal processor sends an instruction to the relay control circuit to enable the detonation signal to be connected for detonation.
Claims (9)
1. A wireless initiation device for perforation, characterized by: the device comprises a transmitting module and a receiving unit; the transmitting module comprises a signal microcontroller for generating sine wave signals, a driving amplifying circuit electrically connected with the signal microcontroller, a series resonance transmitting circuit electrically connected with the driving amplifying circuit and a transmitting antenna electrically connected with the series resonance transmitting circuit; the receiving unit comprises a receiving antenna used for receiving electromagnetic signals from the transmitting antenna, a parallel resonance receiving circuit electrically connected with the receiving antenna, an instrument amplifier electrically connected with the parallel resonance receiving circuit, an amplifying and filtering circuit electrically connected with the instrument amplifier, an analog-to-digital converter electrically connected with the amplifying and filtering circuit, a signal processor electrically connected with the analog-to-digital converter, a clock source electrically connected with the signal processor, a pressure sensor, a temperature sensor, a storage unit and a relay control circuit.
2. The wireless initiation device for perforation according to claim 1, wherein: the signal microcontroller comprises a DAC module for generating sine wave signals, a serial port for adjusting the frequency of the sine wave signals and a timer for controlling the output time of the sine wave signals.
3. The wireless initiation device for perforation according to claim 1, wherein: the driving amplifying circuit comprises an operational amplifier and a triode.
4. The wireless initiation device for perforation according to claim 1, wherein: the transmitting antenna is a magnetic antenna formed by winding N turns of annular coils on a manganese-zinc ferrite magnetic bar, and each annular coil is formed by a single-stranded enameled wire.
5. The wireless initiation device for perforation according to claim 1, wherein: the receiving antenna is a coil winding formed by winding a single-strand enameled wire on a high-temperature-resistant plastic circular tubular column with a certain length.
6. The wireless initiation device for perforation according to claim 5, wherein: the series resonance transmitting circuit is an LC series resonance circuit, and the parallel resonance receiving circuit is formed by a receiving antenna coil winding and a capacitor.
7. The wireless initiation device for perforation according to claim 1, wherein: the instrumentation amplifier is a low-noise precision instrumentation amplifier; the amplifying and filtering circuit comprises a secondary amplifying circuit consisting of multi-channel precise operational amplifiers and a second-order narrow-band active band-pass filter.
8. The wireless initiation device for perforation according to claim 1, wherein: the pressure sensor and the temperature sensor are integrated in the auxiliary measuring probe.
9. The wireless initiation device for perforation according to claim 1, wherein: the signal processor is electrically connected with the relay control circuit through the power amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022225862.8U CN212428763U (en) | 2020-10-09 | 2020-10-09 | Wireless detonating device for perforation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022225862.8U CN212428763U (en) | 2020-10-09 | 2020-10-09 | Wireless detonating device for perforation |
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| Publication Number | Publication Date |
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| CN212428763U true CN212428763U (en) | 2021-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022225862.8U Active CN212428763U (en) | 2020-10-09 | 2020-10-09 | Wireless detonating device for perforation |
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| CN (1) | CN212428763U (en) |
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- 2020-10-09 CN CN202022225862.8U patent/CN212428763U/en active Active
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