CN116006111A - A real-time monitoring hydraulic shaping instrument and its application method - Google Patents

Abstract

The utility model relates to the field of underground device maintenance, in particular to a hydraulic shaping instrument capable of being monitored in real time and a use method thereof.

Description

A real-time monitoring hydraulic shaping instrument and its application method

technical field

The invention relates to the field of maintenance of downhole devices, in particular to a hydraulic shaping instrument capable of real-time monitoring and a usage method.

Background technique

Due to the joint action of various factors such as geology, engineering and corrosion, the casing will be deformed during the development of oil and gas fields. At present, the methods for repairing casing deformation mainly include impact shaper and rolling shaper. Generally, the permanent shaper can only be repaired for single-point deformation. For the casing with large deformation, multiple trips are required, and the damage to the casing is relatively large; Shaper, patent application number 03266194.0 discloses a "casing shaper". Consists of a forward cone and an inverse cone in the middle. There is a through hole in the cone. The front edge of the cone is provided with a guide cone and a fillet. The surface of the cone is opened with a blind hole along more than one helical direction. The blind hole is installed with a spherical body. The utility model has the advantage of a large amount of shaping at one time, and can reduce the number of trips, but it cannot realize that the casing can be repaired after one trip. The patent application number is 201320110191.8 Combined ball tube expander. Under the action of the upper hydraulic thrust or the upper lower impact force, the variable diameter ball expander squeezes and expands the deformed casing. After it passes through the deformation section, it is lowered for shaping For the pipe string, the curved part at the deformation section is straightened by the ball straightener. After the bending deformation section is fully straightened, the shaping of the next sleeve deformation section can be continued. This type of shaper can be shaped in a longer section, but after the shaper is finished, the pipe string may retract, which will cause resistance when running a new tool. At this time, it is necessary to re-run the shaper for shaping, but It is still impossible to grasp the plastic surgery effect in real time, resulting in a lot of time-consuming and labor-intensive processes.

When the caliper run by the cable is measured in a long deviated well, due to the gravity of the caliper itself, the caliper will be eccentric in the wellbore, and the axis of the caliper and the axis of the wellbore will not coincide, which will cause the measured value to vary. smaller than the wellbore diameter. The "Forty-Arm Caliper" with the application number 201220254382.7 discloses a caliper including a central tube, a main engine control panel, an upper centralizer, multiple measuring arms, a displacement sensor, and a guide cone. This is a non-contact Type caliper, to a certain extent, can reduce the problem that the caliper axis does not coincide with the shaft axis of the wellbore, but it cannot fundamentally solve this problem. The caliper or other detection instruments used in the present invention pass through rigid oil pipe It can effectively solve the problem of measurement eccentricity by running the pipe string into the position that needs to be detected.

Contents of the invention

The object of the present invention is to provide a real-time monitoring hydraulic shaping instrument and its usage method in view of the defects in the prior art.

Technical scheme of the present invention is:

A hydraulic shaping instrument that can be monitored in real time, including a pump truck on the surface, a delivery oil pipe, a ground pulse transceiver device, a surface data processing device, and a safety joint and a monitoring shaping instrument in the downhole part. The front end of the delivery oil pipe is connected to the pump The vehicle is connected and the rear end is connected to the safety joint. The ground pulse transceiver device and the ground data processing device are installed at the front of the oil delivery pipe. The connection forms a downhole state pulse monitoring structure, and the monitoring shaper cooperates with the downhole casing to form a casing deformation shaping structure.

Preferably, the monitoring shaper includes a hydraulic anchor, a hydraulic shaper, a downhole pulse transceiver, and a downhole detector that are sequentially connected from top to bottom, and the lower part of the downhole detector is connected in sliding contact with the inner wall of the casing to form a data acquisition structure , the downhole pulse transceiver device is electrically connected to the downhole detector and is connected to the ground pulse transceiver device through a pulse signal, and the downhole pulse transceiver device, the downhole detector and the ground pulse transceiver device cooperate to form data acquisition and transmission structure.

Preferably, the hydraulic pressure shaping instrument includes a hydraulic booster and a variable diameter shaper, the upper end of the hydraulic pressure booster is connected to the hydraulic anchor and the lower end is connected to the variable diameter shaper, and the hydraulic pressure booster The force device cooperates with the variable-diameter shaper to form a hydraulic shaper structure.

Preferably, the downhole pulse transceiving device includes an upper joint, a center pipe, an outer pipe, a lower joint, a data acquisition unit and a pulse generation unit, the upper end of the upper joint is connected with the threaded variable diameter shaper and the lower part is connected with the The central pipe is connected to the outer pipe, the outer pipe is sheathed outside the central pipe and an annular cavity is formed between them, the outer pipe is provided with a liquid spray port, and the central pipe is provided with an upflow liquid port and the downstream liquid port, the data acquisition unit and the pulse generation unit are arranged in the annular cavity formed by the central pipe and the outer pipe, and the data acquisition unit communicates with the downhole detector through the upper liquid port and the downstream liquid port A pressure detection structure is formed, and the lower end of the pulse generation unit contacts and cooperates with the liquid ejection port to form a pulse generation structure.

Preferably, the data acquisition unit includes a battery, a downhole data processor, an MPU, an adjustment control circuit and a signal memory, the downhole data processor is connected to the ground pulse transceiver device through a pulse signal, and the MPU is provided with a plurality of The input port is electrically connected with the downhole data processor, the adjustment control circuit and the signal memory respectively, the adjustment control circuit is provided with a plurality of input ports and is electrically connected with the MPU and the battery respectively, and the adjustment control circuit is provided with The output port is connected with the downhole detector, and the downhole detector is electrically connected with the signal memory.

Preferably, the pulse generating unit includes a feedback motor and a control valve rod, the adjustment control circuit is provided with an output port electrically connected to the feedback motor, the control valve rod includes a screw rod and a liquid port valve rod, and the feedback motor The screw is driven to rotate, the valve rod of the liquid port is limited and slides in the annular space formed by the central pipe and the outer pipe, and the screw rod is connected with the valve rod of the liquid port with threads.

Preferably, the ground processing device is also electrically connected to a computer and a ground signal processing device.

Another object of the present invention is to provide a method for using the above-mentioned hydraulic shaping instrument that can be monitored in real time, including the following steps:

Step 1: Connect the front end of the oil delivery pipe to the pump truck and install the ground pulse transceiver device and ground data processing device at the front of the oil delivery pipe, and connect the lower end of the oil delivery pipe to the safety Joint connection, the lower end of the safety joint is connected with the monitoring plastic instrument;

Step 2: Lower the monitoring shaping instrument into the casing deformation part, the ground signal processing device sends a detection instruction set to the monitoring shaping instrument, and then sends a reading detection result instruction set to the monitoring shaping instrument, and reads Downhole pressure data near the deformed casing, and compared with the target value for judgment;

Step 3: Manipulating the monitoring and shaping instrument to perform shaping operation on the deformed part according to the judgment result of the pressure data;

Step 4: After shaping, proceed to Step 2 again. If the data is normal, bring out the monitor and shaper to complete the operation. If the data is still abnormal, repeat Step 2 and Step 3 until the data is normal.

Preferably, the detection instruction set includes the following specific steps:

The first stage: the ground data processing device forms a carrier signal and sends a pulse signal through the ground pulse transceiver device;

The second stage: the underground pulse transceiver device receives the pulse signal and sends it to the downhole data processor for signal decoding, and the downhole data processor sends the decoded signal to the MPU;

The third stage: the MPU receives the decoded detection instruction and transmits the instruction to the adjustment control circuit, and the adjustment control circuit transmits the instruction to the downhole detector;

The fourth stage: the downhole detector transmits the result to the signal memory after detection.

Preferably, the instruction set for reading test results includes the following specific steps:

Stage 1: The ground data processing device forms a carrier signal and sends a pulse signal through the ground pulse transceiver device;

Stage 2: The underground pulse transceiver device receives the pulse signal and sends it to the downhole data processor for signal decoding, and the downhole data processor sends the decoded signal to the MPU;

Stage three: the MPU reads the monitoring result of the signal memory and then sends the signal to the feedback motor;

Stage 4: The feedback motor drives the control valve rod to generate a pulse signal and sends it to the ground data processing device.

Compared with the prior art, the present invention has the following advantages:

The present invention proposes a brand-new workover test process, which realizes the integration of workover test in one trip, adopts hydraulic workover method to quickly repair casing shrinkage and curved wells, and uses detection instruments to repair The casing repaired well section is tested to evaluate the repair results, avoiding invalid workover and improving the success rate of casing change well repair. The pressure pulse signal generator does not need to pass through the test cable. It can return the test signal through timing return or pressure return, and the test signal is returned through adjustment and control. The test is relatively simple. The downhole monitoring instrument is run in through the tubing, which can meet the running requirements of the well deviated and long well section, and at the same time, it can effectively straighten the testing instrument and improve the testing accuracy of the instrument.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a structural schematic diagram of the downhole pulse transceiver device;

Figure 3 is a schematic diagram of the electrical connection of the device;

Fig. 4 is the working flowchart of detection instruction set;

Fig. 5 is a flow chart of reading the test result instruction set;

In the figure: 1-computer, 2-ground signal processing device, 3-ground pulse transceiver device, 4-ground data processing device, 5-pump truck, 6-transport oil pipe, 7-safety joint, 8-monitoring and shaping device;

81-hydraulic anchor, 82-hydraulic shaper, 83-downhole pulse transceiver device, 84-downhole detector;

821-hydraulic booster, 822-variable diameter shaper;

830-battery, 831-downhole data processor, 832-MPU, 833-adjustment control circuit, 834-signal memory, 835-feedback motor, 836-control valve stem, 8361-screw, 8362-liquid port valve stem, 837- Upper joint, 838-center pipe, 839-outer pipe, 8310-lower joint, 8311-upflow liquid port, 8312-down flow liquid port, 8313-liquid injection port, 8314-data acquisition unit, 8315-pulse generation unit.

Detailed ways

A number of embodiments of the present invention will be disclosed in the following figures. For the sake of clarity, many practical details will be described together in the following description. It should be understood, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the invention, these practical details are not necessary. In addition, for the sake of simplifying the drawings, some well-known and commonly used structures and components will be shown in a simple schematic manner in the drawings.

Embodiment one

Referring to Fig. 1, a hydraulic shaping instrument capable of real-time monitoring and its use method, a hydraulic shaping instrument capable of real-time monitoring, including a ground pump truck 5, a delivery oil pipe 6, a ground pulse transceiver device 3 and ground data processing The device 4 and the safety joint 7 and the monitoring shaper 8 in the downhole part, the front end of the oil delivery pipe 6 communicates with the pump truck 5 and the rear end is connected with the safety joint 7, the ground pulse transceiver device 3 and the ground data processing device 4 are installed on the oil delivery pipe 6 In the front part, the surface pulse transceiver device 3 and the downhole monitoring and shaping device 8 are connected by pulse signals to form a downhole state pulse monitoring structure, and the monitoring and shaping device 8 cooperates with the downhole casing to form a casing deformation shaping structure.

This device has two innovations. One is to use the method of monitoring to repair the casing. This method avoids the complicated operation of repeated rework, and can repair the deformation of the casing at one time, and through real-time monitoring It can effectively understand the underground state and provide data support for the subsequent mining of the same formation in the same area.

The other is to replace the traditional cable data transmission method, and use pulse signals to transmit surface and underground information. This method avoids the disadvantages of traditional data transmission that require long data cables, and only needs to use pulse signals. Achieve data exchange, recording and storage, saving costs.

Embodiment two

With reference to shown in Fig. 1, it is basically the same as Embodiment 1, the difference is that the key component of this device is the monitoring shaping instrument 8, and the monitoring shaping instrument 8 is integrated by two kinds of functional devices, and two kinds of functions are respectively the function of hydraulic shaping and The function of real-time monitoring, the monitoring shaper 8 includes a hydraulic anchor 81, a hydraulic shaper 82, a downhole pulse transceiver device 83, and a downhole detector 84 connected sequentially from top to bottom, and the lower part of the downhole detector 84 is connected to the inner wall of the casing by sliding contact Constitute the data acquisition structure, the downhole pulse transceiver device 83 is electrically connected with the downhole detector 84 and connected with the ground pulse transceiver device 3 through a pulse signal, the downhole pulse transceiver device 83, the downhole detector 84 and the ground pulse transceiver device 3 cooperate to form data Capture transport structure.

The hydraulic pressure shaping instrument 82 includes a hydraulic pressure booster 821 and a variable diameter shaper 822. The upper end of the hydraulic pressure booster 821 is connected to the hydraulic anchor 81 and the lower end is connected to the variable diameter shaper 822. The hydraulic pressure booster 821 is connected to the variable diameter shaper. Shaper 822 cooperates to form a hydroshaping structure.

Embodiment three

Referring to Fig. 1 and shown in Fig. 2, it is basically the same as Embodiment 2, the difference is that the downhole pulse transceiver device 83 is another core of the instrument, through which the pulse signal communication between the downhole and the ground can be realized, and the downhole pulse transceiver device 83 includes an upper joint 837, a central pipe 838, an outer pipe 839, a lower joint 8310, a data acquisition unit 8314 and a pulse generation unit 8315, the upper end of the upper joint 837 is connected with the variable diameter shaper 822 and the lower part is connected with the central pipe 838 and The outer tube 839 is connected, and the outer tube 839 is sleeved outside the central tube 838 and forms an annular cavity between the two. The outer tube 839 is provided with a liquid spray port 8313, and the central tube 838 is provided with an upper liquid port 8311 and a lower liquid port 8312. The data acquisition unit 8314 and the pulse generation unit 8315 are arranged in the annular cavity formed by the central pipe 838 and the outer pipe 839, and the data acquisition unit 8314 communicates with the downhole detector 84 through the upstream liquid port 8311 and the downstream liquid port 8312 to form a pressure detection structure. The lower end of the pulse generating unit 8315 is in contact with the liquid ejection port 8313 to form a pulse generating structure.

Using pulse signals to transmit surface and underground information, this method avoids the disadvantages of long data cables required for traditional data transmission, and only needs to use pulse signals to realize data exchange, recording and storage, saving cost.

Embodiment Four

Referring to Fig. 1, Fig. 2 and Fig. 3, it is basically the same as the third embodiment, the difference is that the device realizes the data intercommunication with the ground through the data acquisition unit 8314, and the data acquisition unit 8314 is composed of multiple circuit modules downhole , integrated into a functional downhole data collection and processing structure, the data acquisition unit 8314 includes a battery 830, a downhole data processor 831, an MPU 832, an adjustment control circuit 833 and a signal memory 834, and the downhole data processor 831 communicates with the ground pulse transceiver device 3 through Pulse signal connection, the MPU832 is provided with multiple input ports and is electrically connected with the downhole data processor 831, the adjustment control circuit 833 and the signal memory 834 respectively, and the adjustment control circuit 833 is provided with multiple input ports and is respectively electrically connected with the MPU832 and the battery 830 , the adjustment control circuit 833 is provided with an output port and is connected to the downhole detector 84 , and the downhole detector 84 is electrically connected to the signal memory 834 .

Embodiment five

Referring to Figure 1, Figure 2 and Figure 3, it is basically the same as Embodiment 4, the difference is that this device forms a pulse signal through the cooperation of the valve stem and the liquid injection port 8313, and the pulse signal has strong penetration. And due to the characteristics of the pulse signal itself, the stability of data transmission can be guaranteed, and the downhole state can be monitored in real time through interpretation and translation. The pulse generating unit 8315 includes a feedback motor 835 and a control valve stem 836. The adjustment control circuit 833 is provided with an output port and The feedback motor 835 is electrically connected, and the control valve rod 836 includes a screw rod 8361 and a liquid port valve rod 8362. The feedback motor 835 drives the screw rod 8361 to rotate, and the liquid port valve rod 8362 slides in the annular space formed by the central tube 838 and the outer tube 839. Screw rod 8361 is threadedly connected with liquid port valve rod 8362. The ground processing device is also electrically connected with a computer 1 and a ground signal processing device 2 .

Embodiment six

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, another object of the present invention is to provide a method for using the hydraulic shaping instrument that can be monitored in real time, including the following steps:

Step 1: Connect the front end of the oil delivery pipe 6 with the pump truck 5 and install the ground pulse transceiver device 3 and the ground data processing device 4 at the front of the oil delivery pipe 6, and connect the lower end of the oil delivery pipe 6 with the safety joint 7, the safety joint The lower end of 7 is connected with monitoring shaping instrument 8;

Step 2: Lower the monitoring and shaping instrument 8 into the deformation part of the casing, the ground signal processing device 2 sends a detection instruction set to the monitoring and shaping instrument 8, and then sends a reading test result instruction set to the monitoring and shaping instrument 8, and reads the deformation near the deformed casing. Downhole pressure data, and compared with the target value for judgment;

Step 3: According to the judgment result of the pressure data, control the monitoring and shaping instrument 8 to perform the shaping operation on the deformed part;

Step 4: After the shaping is completed, proceed to Step 2 again. If the data is normal, bring out the monitoring shaping instrument 8 to complete the operation. If the data is still abnormal, repeat Step 2 and Step 3 until the data is normal.

Embodiment seven

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, it is basically consistent with Embodiment 6, the difference is that the detection instruction set includes the following specific steps:

The first stage: the ground data processing device 4 forms a carrier signal and sends out a pulse signal through the ground pulse transceiver device 3;

The second stage: the underground pulse transceiver device receives the pulse signal and sends it to the downhole data processor 831 for signal decoding, and the downhole data processor 831 sends the decoded signal to the MPU832;

The third stage: the MPU 832 receives the decoded detection instruction and transmits the instruction to the adjustment control circuit 833, and the adjustment control circuit 833 transmits the instruction to the downhole detector 84;

The fourth stage: the downhole detector 84 transmits the result to the signal memory 834 after detection.

Embodiment Eight

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, it is basically consistent with Embodiment 6, the difference is that reading the test result instruction set includes the following specific steps:

Stage 1: The ground data processing device 4 forms a carrier signal and sends out a pulse signal through the ground pulse transceiver device 3;

Phase 2: The underground pulse transceiver device receives the pulse signal and sends it to the downhole data processor 831 for signal decoding, and the downhole data processor 831 sends the decoded signal to the MPU832;

Phase 3: MPU832 reads the monitoring result of the signal memory 834 and then sends the signal to the feedback motor 835;

Stage 4: The feedback motor 835 drives the control valve stem 836 to generate a pulse signal and sends it to the ground data processing device 4 .

The present invention is not limited to the above-mentioned embodiments, within the scope of knowledge of those skilled in the art, various changes can also be made without departing from the gist of the present invention, and the changed content still belongs to the protection scope of the present invention .

Claims (10)

1. The utility model provides a but hydraulic shaping instrument of real-time supervision, includes the pump truck of ground part, carries oil pipe, ground pulse transceiver and ground data processing apparatus and the safety joint and the control shaping appearance of underground part, carry oil pipe the front end with pump truck intercommunication and rear end with safety joint connects, ground pulse transceiver and ground data processing apparatus install in carry oil pipe's front portion, ground pulse transceiver and underground the control shaping appearance passes through pulse signal connection and constitutes underground state pulse monitoring structure, control shaping appearance and underground sleeve pipe cooperation constitute sleeve pipe deformation shaping structure.

2. The real-time monitorable hydraulic shaping instrument of claim 1 and further comprising: the monitoring shaping instrument comprises a hydraulic anchor, a hydraulic shaping instrument, an underground pulse receiving and transmitting device and an underground detector which are sequentially connected from top to bottom, the lower part of the underground detector is connected with the inner wall of a sleeve in a sliding contact manner to form a data acquisition structure, the underground pulse receiving and transmitting device is electrically connected with the underground detector and connected with the ground pulse receiving and transmitting device through pulse signals, and the underground pulse receiving and transmitting device, the underground detector and the ground pulse receiving and transmitting device are matched to form a data acquisition transmission structure.

3. A real-time monitorable hydraulic shaping instrument according to claim 2 and wherein: the hydraulic shaping instrument comprises a hydraulic booster and a variable diameter shaper, wherein the upper end of the hydraulic booster is connected with the hydraulic anchor, the lower end of the hydraulic booster is connected with the variable diameter shaper, and the hydraulic booster is matched with the variable diameter shaper to form a hydraulic shaping structure.

4. A real-time monitorable hydraulic shaping instrument according to claim 2 and wherein: the underground pulse receiving and transmitting device comprises an upper joint, a central tube, an outer tube, a lower joint, a data acquisition unit and a pulse generation unit, wherein the upper end of the upper joint is connected with a variable diameter shaper in a threaded manner, the lower part of the upper joint is connected with the central tube and the outer tube, the outer tube is sleeved outside the central tube, an annular cavity is formed between the central tube and the central tube, a liquid spraying opening is formed in the outer tube, an upstream liquid opening and a downstream liquid opening are formed in the central tube, the data acquisition unit and the pulse generation unit are arranged in the annular cavity formed by the central tube and the outer tube, the data acquisition unit is communicated with an underground detector through the upstream liquid opening and the downstream liquid opening to form a pressure detection structure, and the lower end of the pulse generation unit is in contact fit with the liquid spraying opening to form a pulse generation structure.

5. The real-time monitorable hydraulic shaping instrument of claim 4 and further comprising: the data acquisition unit comprises a battery, an underground data processor, an MPU, an adjusting control circuit and a signal memory, wherein the underground data processor is connected with the ground pulse receiving and transmitting device through pulse signals, the MPU is provided with a plurality of input ports and is respectively and electrically connected with the underground data processor, the adjusting control circuit and the signal memory, the adjusting control circuit is provided with a plurality of input ports and is respectively and electrically connected with the MPU and the battery, the adjusting control circuit is provided with an output port and is connected with the underground detector, and the underground detector is electrically connected with the signal memory.

6. The real-time monitorable hydraulic shaping instrument of claim 5 and further comprising: the pulse generating unit comprises a feedback motor and a control valve rod, the adjusting control circuit is provided with an output port and is electrically connected with the feedback motor, the control valve rod comprises a screw rod and a liquid port valve rod, the feedback motor drives the screw rod to rotate, the liquid port valve rod is limited and slides in an annular space formed by the central tube and the outer tube, and the screw rod is connected with the liquid port valve rod through threads.

7. The real-time monitorable hydraulic shaping instrument of claim 1 and further comprising: the ground processing device is also electrically connected with a computer and a ground signal processing device.

8. The method of using a real-time monitorable hydraulic shaping instrument according to claim 6 and characterized in that:

step one: the front end of the conveying oil pipe is connected with the pump truck, the ground pulse receiving and transmitting device and the ground data processing device are arranged at the front part of the conveying oil pipe, the lower end of the conveying oil pipe is connected with the safety joint, and the lower end of the safety joint is connected with the monitoring shaper;

step two: the ground signal processing device sends a detection instruction set to the monitoring shaper, then sends a detection result reading instruction set to the monitoring shaper, reads downhole pressure data near the deformed sleeve, and compares the detection result with a target value to judge;

step three: controlling the monitoring shaper to shape the deformed part according to the judgment result of the pressure data;

step four: after finishing shaping, carrying out the second step again, if the data are normal, providing a monitoring shaping instrument to finish the operation, and if the data are still abnormal, repeating the second step and the third step until the data are normal.

9. The method of using a real-time monitorable hydraulic shaping instrument according to claim 8 and characterized in that: the detection instruction set comprises the following specific steps:

the first stage: the ground data processing device forms a carrier signal and sends out a pulse signal through the ground pulse receiving and transmitting device;

and a second stage: the underground pulse receiving and transmitting device receives pulse signals and transmits the pulse signals to the underground data processor for signal decoding, and the underground data processor transmits the decoded signals to the MPU;

and a third stage: the MPU receives the decoded detection instruction and transmits the instruction to the adjustment control circuit, and the adjustment control circuit transmits the instruction to the underground detector;

fourth stage: and after the underground detector detects, transmitting the result to the signal memory.

10. The method of using a real-time monitorable hydraulic shaping instrument according to claim 8 and characterized in that: the instruction set for reading the detection result comprises the following specific steps:

stage one: the ground data processing device forms a carrier signal and sends out a pulse signal through the ground pulse receiving and transmitting device;

stage two: the underground pulse receiving and transmitting device receives pulse signals and transmits the pulse signals to the underground data processor for signal decoding, and the underground data processor transmits the decoded signals to the MPU;

stage three: the MPU reads the monitoring result of the signal memory and then sends a signal to the feedback motor;

stage four: the feedback motor drives the control valve rod to generate pulse signals and sends the pulse signals to the ground data processing device.

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