Control system of underground perforation compaction belt stripping device

Abstract

The utility model discloses a control system of an underground perforation compaction belt stripping device. The control system comprises a ground control system and an underground control system, the ground control system comprises a host and a ground communication module, and the host is connected with the ground communication module; the underground control system comprises a power supply module, an underground communication module, a main control module, a motor control module and a sensor group, the ground communication module is in communication connection with the underground communication module, the underground communication module is connected with the main control module, the main control module is connected with the motor control module, and the sensor group is connected with the main control module. And the underground communication module, the main control module, the motor control module and the sensor group are respectively connected with the power supply module. The control system of the underground perforation compaction belt stripping device can achieve full-automatic accurate hole searching and alignment operation, is small in size, low in use cost and good in perforation cleaning effect, and is suitable for various oil wells.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas exploitation, and particularly relates to a control system for a downhole perforation compaction zone stripping device. Background Art

[0002] In the field of oil and gas exploitation, although the shaped charge perforation technology can effectively form oil and gas flow channels, a compaction zone often forms on the inner wall of the perforation channels generated by it. Due to the tight contact of particles, the number of pores in this compaction zone decreases sharply, the volume of the channels shrinks, and the connectivity decreases, which in turn has an adverse effect on the oil and gas permeability, limits the oil well productivity, and increases the injection pressure of the injection well.

[0003] The traditional acidification and fracturing processes are limited by their limitation of only partially acting on the surface layer of the compaction zone and cannot fundamentally solve the problem. In this context, the high-pressure water jet technology, with its powerful impact force and precise erosion ability, has become an innovative way to solve the compaction zone problem. This technology can not only penetrate deep into the channels to crush the compaction zone but also synchronously remove debris impurities, promising to significantly improve the oil and gas exploitation efficiency and provide new technical support for the effective development of oil and gas resources.

[0004] However, most of the existing products on the market are manually operated at present, with problems such as low automation level, inaccurate hole searching, and large space occupation of the equipment. Therefore, it is an urgent problem to be solved at present to design an automatic control system for a perforation compaction zone stripping device that can operate fully automatically using high-pressure water jets. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a control system for a downhole perforation compaction zone stripping device aiming at the deficiencies of the existing technology, so as to solve the problems of low automation level and inaccurate hole searching in the existing technology.

[0006] The utility model provides a control system for a downhole perforation compaction zone stripping device, including: a ground control system and a downhole control system;

[0007] The ground control system includes a host and a ground communication module, and the host is connected to the ground communication module;

[0008] The downhole control system includes a power module, a downhole communication module, a main control module, a motor control module, and a sensor group. The ground communication module is communicatively connected to the downhole communication module, the downhole communication module is connected to the main control module, the main control module is connected to the motor control module, the sensor group is connected to the main control module, and the downhole communication module, the main control module, the motor control module, and the sensor group are respectively connected to the power module.

[0009] Further, the power supply module includes a fuse F1, electrolytic capacitors E1, E2, E3, E4, E5, E6, E7, E8; capacitors C1, C2, C3, C4, C5, C6; inductors L1, L2; power supply chips U1, U2, U3; resistors R1, R2, R3; and a light-emitting diode D4.

[0010] The fuse F1 is connected to one end of the electrolytic capacitor E1. The electrolytic capacitors E1 and E2 are connected in parallel. The electrolytic capacitors E3 and E4 are connected in parallel. An inductor L1 is connected between the electrolytic capacitors E2 and E3. The electrolytic capacitor E4 is connected to the power supply chip U1. The electrolytic capacitor E5 is connected to the power supply chip U1. The electrolytic capacitor E6 is connected in parallel with the capacitor C1. The inductor L2 is connected between the capacitors C1 and C2. The capacitor C2 is connected to the power supply chip U2. The electrolytic capacitor E7 is connected to the power supply chip U2. The capacitor C3 is connected across the resistor R2. The resistor R1 is connected to the resistor R2. The capacitors C4 and C5 are connected in parallel. One end of the capacitor C5 is connected to the IN pin of the power supply chip U3. The resistor R3 and the light-emitting diode D4 are connected in series and then connected in parallel with the capacitor C6. The capacitor C6 is connected in parallel with the electrolytic capacitor E8. One end of the electrolytic capacitor E8 is connected to the OUT pin of the power supply chip U3.

[0011] Further, the main control module includes capacitors C7, C8, C9, C10; crystal oscillators Y1, Y2; resistors R4, R5; a single-chip microcomputer U4; and a light-emitting diode D1.

[0012] One end of the capacitors C7 and C8 is connected to GND, and the other ends are respectively connected to the OSC32_IN pin and the OSC32_OUT pin of the single-chip microcomputer U4. The crystal oscillator Y1 is connected between the other ends of the capacitors C7 and C8. One end of the capacitors C9 and C10 is connected to GND, and the other ends are respectively connected to the OSC_IN pin and the OSC_OUT pin of the single-chip microcomputer U4. The crystal oscillator Y2 is connected between the other ends of the capacitors C9 and C10. The resistor R4 is connected in parallel with the crystal oscillator Y2. The resistor R5 is connected to the light-emitting diode D1, and the light-emitting diode D1 is connected to the I / O pin of the single-chip microcomputer U4.

[0013] Further, the motor control module includes an electrolytic capacitor E9; capacitors C11, C12, C13; diodes D2, D3; a resistor R6; and a chip U5.

[0014] The electrolytic capacitor E9 is connected in parallel with the capacitor C11. One end of the capacitor C11 is connected to the capacitor C12. The diodes D2 and D3 are connected in series and then connected in parallel with the capacitor C12. One end of the diode D2 is connected to the VSA and VSB pins of the chip U5; one end of the capacitor C13 is connected between the diodes D2 and D3, the other end of the capacitor C13 is connected to the VCP pin of the chip U5, and one end of the diode D3 is connected to the VBOOT pin of the chip U5; the resistor R6 is connected to the SENSEA and SENSEB pins of the chip U5.

[0015] Further, the communication module circuit includes a power line carrier module U7; Y capacitors C15 and C16; a light-emitting diode D5; a current-limiting resistor R10; the USART pin of the power line carrier module U7 is connected to the main control module, the current-limiting resistor R10 is connected to the light-emitting diode D5, the light-emitting diode D5 is connected to the power line carrier module U7, the Y capacitor C15 is connected to the LINE_P of the power line carrier module U7, and the Y capacitor C16 is connected to the LINE_N of the power line carrier module U7.

[0016] Further, the sensor group includes: an upper limit switch, a lower limit switch, a perforation detection sensor probe, a perforation detection sensor processor, an optocoupler U6; resistors R7, R8, and R9; a capacitor C14; the upper limit switch and the lower limit switch are respectively connected to the main control module, the perforation detection sensor probe is connected to the perforation detection sensor processor, the perforation detection sensor processor is connected to the resistor R7, one end of the capacitor C14 is connected to one end of the resistor R7, and one end of the resistor R8 is connected to the other end of the capacitor C14; the resistors R7 and R8 are connected to the optocoupler U6, the resistor R9 is connected to the optocoupler U6, and the optocoupler U6 is connected to the main control module.

[0017] Further, the ground communication module includes chips U8 and U9; a power line carrier module U10; Y capacitors C17 and C18; light-emitting diodes D6 and a resistor R11; the chips U8 and U9 are respectively connected to the host, the chip U8 is connected to the VDC and GND pins of the power line carrier module U10; the chip U9 is connected to the USART pin of the power line carrier module U10; the resistor R11 is connected to the light-emitting diode D6, the light-emitting diode D6 is connected to the power line carrier module U10, the Y capacitor C17 is connected to the LINE_N pin of the power line carrier module U10, and the Y capacitor C18 is connected to the LINE_P pin of the power line carrier module U10.

[0018] The utility model has the following beneficial effects: A downhole perforation compaction belt stripping device control system provided by the utility model can realize full-automatic accurate hole searching and alignment operations, has a small size, low use cost, and good perforation cleaning effect, and is applicable to various types of oil wells. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is the overall functional block diagram of the control system of the downhole perforation compaction zone stripping device of the present invention;

[0021] Figure 2 It is the circuit diagram of the power supply module of the downhole control system;

[0022] Figure 3 It is the circuit diagram of the main control module of the downhole control system;

[0023] Figure 4 It is the circuit diagram of the motor control module of the downhole control system;

[0024] Figure 5 It is the circuit diagram of the communication module of the downhole control system;

[0025] Figure 6 It is the circuit diagram of the sensor group of the downhole control system;

[0026] Figure 7 It is the circuit diagram of the ground communication module of the ground control system. Specific embodiments

[0027] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will refer to the drawings and combine the embodiments to detail the present invention. It should be pointed out that the following detailed description is illustrative and aims to provide further explanation for this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0028] Please refer to Figures 1 to 7 , the embodiments of the present invention provide a control system for a downhole perforation compaction zone stripping device, including: a ground control system and a downhole control system; the ground control system includes a host and a ground communication module, and the host is connected to the ground communication module; the downhole control system includes a power supply module, a downhole communication module, a main control module, a motor control module and a sensor group. The ground communication module is communicatively connected to the downhole communication module, the downhole communication module is connected to the main control module, the main control module is connected to the motor control module, the sensor group is connected to the main control module, and the downhole communication module, the main control module, the motor control module and the sensor group are respectively connected to the power supply module.

[0029] Specifically, the power supply module includes a fuse F1, electrolytic capacitors E1, E2, E3, E4, E5, E6, E7, E8; capacitors C1, C2, C3, C4, C5, C6; inductors L1, L2; power supply chips U1, U2, U3; resistors R1, R2, R3; and a light-emitting diode D4.

[0030] The fuse F1 is connected to one end of the electrolytic capacitor E1. The electrolytic capacitors E1 and E2 are in parallel, and the electrolytic capacitors E3 and E4 are in parallel. An inductor L1 is connected between the electrolytic capacitors E2 and E3. The electrolytic capacitor E4 is connected to the power supply chip U1, and the electrolytic capacitor E5 is connected to the power supply chip U1. The electrolytic capacitor E6 is in parallel with the capacitor C1. The inductor L2 is connected between the capacitors C1 and C2. The capacitor C2 is connected to the power supply chip U2, and the electrolytic capacitor E7 is connected to the power supply chip U2. The capacitor C3 is connected across the resistor R2, and the resistors R1 and R2 are connected. The capacitors C4 and C5 are in parallel. One end of the capacitor C5 is connected to the IN pin of the power supply chip U3. The resistor R3 and the light-emitting diode D4 are in series and then in parallel with the capacitor C6. The capacitor C6 is in parallel with the electrolytic capacitor E8. One end of the electrolytic capacitor E8 is connected to the OUT pin of the power supply chip U3.

[0031] The power supply chip U1 can be selected as URF1D48LD, the power supply chip U2 can be selected as WRF4805S, and the power supply chip U3 can be selected as LM317. The function of the power supply module is to convert the external power supply voltage DC110V into DC48V, DC5V, and DC3.3V respectively and output them to other modules and the lower-level circuit.

[0032] Specifically, the main control module includes capacitors C7, C8, C9, C10; crystal oscillators Y1, Y2; resistors R4, R5; a single-chip microcomputer U4; and a light-emitting diode D1. One end of the capacitors C7 and C8 is connected to GND, and the other ends are respectively connected to the OSC32_IN pin and the OSC32_OUT pin of the single-chip microcomputer U4. The crystal oscillator Y1 is connected between the other ends of the capacitors C7 and C8. One end of the capacitors C9 and C10 is connected to GND, and the other ends are respectively connected to the OSC_IN pin and the OSC_OUT pin of the single-chip microcomputer U4. The crystal oscillator Y2 is connected between the other ends of the capacitors C9 and C10. The resistor R4 is in parallel with the crystal oscillator Y2. The resistor R5 is connected to the light-emitting diode D1, and the light-emitting diode D1 is connected to the I / O pin of the single-chip microcomputer U4. The single-chip microcomputer U4 can be selected as STM32F103C8T6. The single-chip microcomputer receives signals from other modules and outputs corresponding control signals. The crystal oscillator group provides a stable clock signal to the single-chip microcomputer. The light-emitting diode D1 is used to indicate the operating state of the single-chip microcomputer.

[0033] Specifically, the motor control module includes an electrolytic capacitor E9; capacitors C11, C12, and C13; diodes D2 and D3; a resistor R6; and a chip U5. The electrolytic capacitor E9 is connected in parallel with the capacitor C11. One end of the capacitor C11 is connected to the capacitor C12. The diodes D2 and D3 are connected in series and then connected in parallel with the capacitor C12. One end of the diode D2 is connected to the VSA and VSB pins of the chip U5. One end of the capacitor C13 is connected between the diodes D2 and D3, and the other end of the capacitor C13 is connected to the VCP pin of the chip U5. One end of the diode D3 is connected to the VBOOT pin of the chip U5. The resistor R6 is connected to the SENSEA and SENSEB pins of the chip U5. The chip U5 can be selected as L6205D. The chip U5 is respectively connected to the single-chip microcomputer of the main control module and two motors, and drives the motors to run according to the program by receiving the motor control signal of the main control module, and then drives the corresponding mechanical structure components to run.

[0034] Specifically, the communication module circuit includes a power line carrier module U7; Y capacitors C15 and C16; a light-emitting diode D5; and a current-limiting resistor R10. The USART pin of the power line carrier module U7 is connected to the main control module. The current-limiting resistor R10 is connected to the light-emitting diode D5, and the light-emitting diode D5 is connected to the power line carrier module U7. The Y capacitor C15 is connected to the LINE_P of the power line carrier module U7, and the Y capacitor C16 is connected to the LINE_N of the power line carrier module U7. The power line carrier module is connected to the single-chip microcomputer of the main control module, converts the serial communication signal of the main control module into a power line carrier signal, and couples it to the DC110V power line through the Y capacitors C15 and C16, so as to realize the communication between the underground control system and the ground control system.

[0035] Specifically, the sensor group includes: an upper limit switch, a lower limit switch, a perforation detection sensor probe, a perforation detection sensor processor, and an optocoupler U6; resistors R7, R8, and R9; and a capacitor C14. The upper limit switch and the lower limit switch are respectively connected to the main control module. The perforation detection sensor probe is connected to the perforation detection sensor processor, and the perforation detection sensor processor is connected to the resistor R7. One end of the capacitor C14 is connected to one end of the resistor R7, and one end of the resistor R8 is connected to the other end of the capacitor C14. The resistors R7 and R8 are connected to the optocoupler U6, the resistor R9 is connected to the optocoupler U6, and the optocoupler U6 is connected to the main control module. The function of the sensor group is to detect the signals of each part of the detection device and output them to the main control module. Among them, the upper limit switch and the lower limit switch are used to detect the running position of the mechanical structure to prevent over-running. When the perforation detection sensor probe detects the perforation on the pipe wall, the detection signal will be converted into a level signal through the processor circuit and sent to the main control module.

[0036] Specifically, the ground communication module includes chip U8, chip U9; power line carrier module U10; Y capacitors C17, C18; light-emitting diode D6, resistor R11. Chip U8 and chip U9 are respectively connected to the host. Chip U8 is connected to the VDC pin and GND pin of the power line carrier module U10; chip U9 is connected to the USART pin of the power line carrier module U10. Resistor R11 is connected to light-emitting diode D6, and light-emitting diode D6 is connected to the power line carrier module U10. Y capacitor C17 is connected to the LINE_N pin of the power line carrier module U10, and Y capacitor C18 is connected to the LINE_P pin of the power line carrier module U10. Chip U8 can be selected as LM317, and chip U9 can be selected as CH342F. Chip U8 converts the DC5V power supply provided by the host into DC3.3V to power the power line carrier module. Chip U9 converts the host USB communication into a serial communication signal and sends it to the power line carrier module, and then the power line carrier module converts the serial communication signal into a power line carrier signal, which is coupled to the DC110V power line through the Y capacitor to achieve data communication between the ground and the underground.

[0037] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A control system for a downhole perforation compaction belt stripping device, characterized in that: include: Surface control system and downhole control system; The ground control system includes a host and a ground communication module, and the host is connected to the ground communication module; The downhole control system includes a power module, a downhole communication module, a main control module, a motor control module and a sensor group. The ground communication module is communicatively connected to the downhole communication module, the downhole communication module is connected to the main control module, the main control module is connected to the motor control module, the sensor group is connected to the main control module, and the downhole communication module, main control module, motor control module and sensor group are respectively connected to the power module.

2. A control system for a downhole perforation compaction stripping device as claimed in claim 1, characterized in that: The power module includes a fuse F1, an electrolytic capacitor E1, an electrolytic capacitor E2, an electrolytic capacitor E3, an electrolytic capacitor E4, an electrolytic capacitor E5, an electrolytic capacitor E6, an electrolytic capacitor E7, and an electrolytic capacitor E8; a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, and a capacitor C6; an inductor L1 and an inductor L2; a power chip U1, a power chip U2, and a power chip U3; a resistor R1, a resistor R2, and a resistor R3; and a light emitting diode D4; The fuse F1 is connected to one end of the electrolytic capacitor E1, the electrolytic capacitor E1 and the electrolytic capacitor E2 are connected in parallel, the electrolytic capacitor E3 and the electrolytic capacitor E4 are connected in parallel, an inductor L1 is connected between the electrolytic capacitors E2 and E3, the electrolytic capacitor E4 is connected to the power chip U1, and the electrolytic capacitor E5 is connected to the power chip U1; the electrolytic capacitor E6 is connected in parallel with the capacitor C1, the inductor L2 is connected between the capacitor C1 and the capacitor C2, the capacitor C2 is connected to the power chip U2, and the electrolytic capacitor E7 is connected to the power chip U2; the capacitor C3 is connected to both ends of the resistor R2, and the resistor R1 is connected to the resistor R2; the capacitor C4 and the capacitor C5 are connected in parallel, one end of the capacitor C5 is connected to the IN pin of the power chip U3, the resistor R3 is connected in series with the light emitting diode D4 and then connected in parallel with the capacitor C6, the capacitor C6 is connected in parallel with the electrolytic capacitor E8, and one end of the electrolytic capacitor E8 is connected to the OUT pin of the power chip U3.

3. A control system for a downhole perforation compaction stripping device as claimed in claim 2, characterized in that: The main control module includes capacitors C7, C8, C9, and C10; crystal oscillators Y1 and Y2; resistors R4 and R5; a single-chip microcomputer U4; and a light-emitting diode D1. One end of the capacitor C7 and the capacitor C8 are connected to GND, and the other ends are respectively connected to the OSC32_IN pin and the OSC32_OUT pin of the single-chip microcomputer U4, and the crystal oscillator Y1 is connected between the other ends of the capacitor C7 and the capacitor C8; one end of the capacitor C9 and the capacitor C10 are connected to GND, and the other ends are respectively connected to the OSC_IN pin and the OSC_OUT pin of the single-chip microcomputer U4, and the crystal oscillator Y2 is connected between the other ends of the capacitor C9 and the capacitor C10; the resistor R4 is connected in parallel with the crystal oscillator Y2; the resistor R5 is connected to the light-emitting diode D1, and the light-emitting diode D1 is connected to the I / O pin of the single-chip microcomputer U4.

4. A control system for a downhole perforation compaction stripping device as claimed in claim 3, characterized in that: The motor control module includes an electrolytic capacitor E9; a capacitor C11, a capacitor C12, a capacitor C13; a diode D2, a diode D3; a resistor R6; and a chip U5; Electrolytic capacitor E9 is connected in parallel with capacitor C11, one end of capacitor C11 is connected to capacitor C12, diodes D2 and D3 are connected in series and connected in parallel with capacitor C12, one end of diode D2 is connected to the VSA pin and VSB pin of chip U5; one end of capacitor C13 is connected between diodes D2 and D3, the other end of capacitor C13 is connected to the VCP pin of chip U5, one end of diode D3 is connected to the VBOOT pin of chip U5; resistor R6 is connected to the SENSEA pin and SENSEB pin of chip U5.

5. A control system for a downhole perforation compaction belt stripping device as claimed in claim 4, characterized in that: The communication module circuit includes a power carrier module U7; a Y capacitor C15, a Y capacitor C16; a light emitting diode D5; a current limiting resistor R10; the USART pin of the power carrier module U7 is connected to the main control module, the current limiting resistor R10 is connected to the light emitting diode D5, the light emitting diode D5 is connected to the power carrier module U7, the Y capacitor C15 is connected to the LINE_P of the power carrier module U7, and the Y capacitor C16 is connected to the LINE_N of the power carrier module U7.

6. A control system for a downhole perforation compaction belt stripping device as claimed in claim 5, characterized in that: The sensor group includes: an upper limit switch, a lower limit switch, a perforation detection sensor probe, a perforation detection sensor processor, and an optical coupler U6; resistors R7, R8, and R9; and a capacitor C14; the upper limit switch and the lower limit switch are respectively connected to the main control module, the perforation detection sensor probe is connected to the perforation detection sensor processor, the perforation detection sensor processor is connected to the resistor R7, one end of the capacitor C14 is connected to one end of the resistor R7, and one end of the resistor R8 is connected to the other end of the capacitor C14; the resistors R7 and R8 are connected to the optical coupler U6, the resistor R9 is connected to the optical coupler U6, and the optical coupler U6 is connected to the main control module.

7. A control system for a downhole perforation compaction stripping device as claimed in claim 6, characterized in that: The ground communication module includes chip U8, chip U9; power carrier module U10; Y capacitor C17, Y capacitor C18; light emitting diode D6, resistor R11; chip U8 and chip U9 are connected to the host respectively, chip U8 is connected to the VDC pin and GND pin of the power carrier module U10; chip U9 is connected to the USART pin of the power carrier module U10; resistor R11 is connected to the light emitting diode D6, the light emitting diode D6 is connected to the power carrier module U10, the Y capacitor C17 is connected to the LINE_N pin of the power carrier module U10, and the Y capacitor C18 is connected to the LINE_P pin of the power carrier module U10.

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