CN115038151A - Communication while drilling relay node based on self-energy supply - Google Patents
Communication while drilling relay node based on self-energy supply Download PDFInfo
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- CN115038151A CN115038151A CN202210556520.5A CN202210556520A CN115038151A CN 115038151 A CN115038151 A CN 115038151A CN 202210556520 A CN202210556520 A CN 202210556520A CN 115038151 A CN115038151 A CN 115038151A
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- 238000005553 drilling Methods 0.000 title claims abstract description 123
- 238000004891 communication Methods 0.000 title claims abstract description 98
- 238000000034 method Methods 0.000 claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 238000012545 processing Methods 0.000 claims description 45
- 238000004146 energy storage Methods 0.000 claims description 23
- 230000008878 coupling Effects 0.000 claims description 15
- 238000010168 coupling process Methods 0.000 claims description 15
- 238000005859 coupling reaction Methods 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000007781 pre-processing Methods 0.000 claims description 6
- 230000008054 signal transmission Effects 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 101100236764 Caenorhabditis elegans mcu-1 gene Proteins 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/32—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
- H04B7/15542—Selecting at relay station its transmit and receive resources
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention provides a self-powered while-drilling communication relay node which is characterized by comprising an energy supply system and a while-drilling communication relay node; the energy supply system collects underground energy to supply power for the relay node during the communication while drilling; the energy supply system comprises an energy conversion module and an energy management and storage module; the energy conversion module collects underground energy, converts the underground energy into electric energy and transmits the electric energy to the energy management and storage module; the energy management and storage module stores and manages the energy generated by the energy conversion module and then supplies power to the while-drilling communication relay node at fixed time intervals. In the drilling process, the self-powered while-drilling communication relay nodes are distributed on each drill rod, underground energy is collected in a distributed mode, the self-powered while-drilling communication relay nodes have the advantages of being high in speed, small in size, convenient to deploy and high in anti-interference capacity, one-time deployment and permanent use are achieved, and batteries do not need to be replaced or a turbine generator is not used for supplying power. Mechanical energy is converted into electric energy to supply power to the while-drilling communication relay node, normal work of the while-drilling communication relay node in an underground extreme environment can be guaranteed, and follow-up cost of a large amount of financial resources and manpower for maintenance is avoided.
Description
Technical Field
The invention relates to communication while drilling, in particular to a self-energy-supply-based communication while drilling relay node.
Background
With the development of economy, exploration and exploitation of petroleum resources have progressed from the shallow layers of the earth to deep strata and the ocean. Logging-while-drilling techniques are also becoming more and more widely used. The communication while drilling is used as a key link of the logging while drilling technology and is also a bottleneck for restricting the development of the logging while drilling technology. The existing relay nodes used for communication while drilling in the well are mostly powered by cables, turbine generators or battery packs. The cable process is complex, and the abrasion at the drill rod joint is serious; the turbine generator is difficult to maintain and high in cost. The service life of the battery pack is limited, and the battery pack is greatly influenced by the underground environment; in addition, the conventional underground relay node for communication while drilling is large in size, complex in structure and long in spacing distance, so that the deployment difficulty of the relay node is high, and the anti-interference capability of information transmission is poor. Therefore, the relay node which is used for communication while drilling, does not need to be powered in the mode, is convenient to deploy and has strong anti-interference capability needs to be invented.
Disclosure of Invention
The invention aims to: aiming at the problems, the invention provides a self-powered while-drilling communication relay node which has the characteristics of small volume and simple structure, can be deployed on each drill rod, works by collecting vibration energy of the drill rod, has strong anti-interference capability, stable information transmission, low maintenance cost and longer service life, can be deployed for permanent use at one time basically, and does not need to replace batteries repeatedly.
The invention is realized by the following technical scheme: the communication while drilling relay node based on self-powered energy supply comprises an energy supply system and a communication while drilling relay node; the energy supply system collects underground energy to supply power to the while-drilling communication relay node; the energy supply system comprises an energy conversion module and an energy management and storage module; the energy conversion module is used for collecting underground energy, converting the underground energy into electric energy and transmitting the electric energy to the energy management and storage module; the energy management and storage module stores and manages the energy generated by the energy conversion module and then supplies power to the while-drilling communication relay node at fixed time intervals.
Further, the energy conversion module is one or more of a friction nano generator and a piezoelectric nano generator.
Further, the energy management storage module comprises an energy storage element, a voltage comparator and a timer; the communication while drilling relay node acquires the electric quantity of the energy storage element, stores the electric quantity value of the energy storage element, and periodically transmits the electric quantity value to the next relay node so as to transmit the electric quantity value to the ground control end.
Further, the relay node for communication while drilling comprises a wireless receiving module, a data processing module 1, a data processing module 2 and a wireless transmitting module. The wireless receiving module comprises a receiving coil and a corresponding circuit component and is used for receiving underground data transmitted by a previous communication while drilling relay node; the wireless transmitting module comprises a transmitting coil and a corresponding circuit component and is used for transmitting data to a subsequent communication-while-drilling node; the data processing module 1 is used for preprocessing the underground data received by the wireless receiving module.
Furthermore, the receiving coil and the transmitting coil are respectively arranged at two ends of the drill rod, and the receiving coil is coupled with the transmitting coil of the while-drilling communication relay node on the previous drill rod at the joint of the drill rod and used for wirelessly receiving a coupling signal; and the transmitting coil is coupled with a receiving coil of the while-drilling communication relay node on the next drill rod at the joint of the drill rods and used for wirelessly transmitting a coupling signal.
Further, the processing of the downhole data received by the wireless receiving module by the data processing module 1 is specifically: the data processing module processes the sensor data, wakes up the data processing module 2, and transmits the preprocessed data to the data processing module 2.
Further, the processing of the received preprocessed data by the data processing module 2 specifically includes: after the data processing module 2 collects the electric quantity information of the energy storage element, the data after the preprocessing is further processed, the wireless transmitting module is waken up and transmits the data after the further processing, and the wireless transmitting module wirelessly transmits the data to a subsequent communication while drilling relay node after receiving the data.
Further, when the timer of the relay node for communication while drilling sends a timing pulse, the voltage comparator judges the electric quantity value of the energy storage element, when the electric quantity value of the energy storage element is greater than or equal to V1, the data processing module 1 preprocesses the downhole data received by the wireless receiving module, wakes up the data processing module 2, and sends the preprocessing result to the data processing module 2, the data processing module 2 further processes and wakes up the wireless sending module and transmits information, and the wireless transmitting module transmits the information to the next relay node for communication while drilling;
furthermore, the wireless receiving module comprises one of an electromagnetic wave signal receiving device and a magnetic coupling receiving device.
Furthermore, the wireless transmitting module comprises one of an electromagnetic wave signal transmitting device and a magnetic coupling transmitting device.
The invention has the beneficial effects that:
1. according to the communication while drilling relay node based on self-powered energy, in the drilling process, the communication while drilling relay nodes based on self-powered energy are distributed on each drill rod, the energy in the underground is converted into electric energy by using a self-powered energy technology, the communication while drilling relay nodes on adjacent drill rods transmit data through the transmitting coil and the receiving coil which are mutually coupled at the joints of the drill rods, the anti-interference performance is high, the self-powered communication while drilling relay node is realized, the energy consumption of communication while drilling is reduced, and the daily maintenance difficulty and cost are reduced.
2. According to the communication-while-drilling relay node based on self-energy supply, distributed mechanical energy can be converted into electric energy to supply power to the communication-while-drilling relay node, the communication-while-drilling relay node can be guaranteed to normally work in an underground limit environment, and a large amount of financial and manpower is prevented from being spent for maintenance in the follow-up process.
3. According to the self-powered while-drilling communication relay node, when the timer generates timing pulses and the electric quantity value of the energy storage element reaches a certain value, all modules are awakened in sequence, so that high-stability work of the self-powered while-drilling communication relay node is guaranteed, and the self-powered while-drilling communication relay node with small network delay and high real-time performance is achieved.
4. According to the communication while drilling relay node based on self-powered energy, the electric quantity value of the energy storage element can be collected and sent to a subsequent communication while drilling relay node, and then sent to the ground control end, so that the position of the communication while drilling relay node and the specific work deployment of the position of the communication while drilling relay node can be favorably carried out in the subsequent work according to the electric quantity value of the energy storage element of the communication while drilling relay node.
Drawings
Fig. 1 is a design configuration diagram of an energy supply system.
Fig. 2 is a design structure diagram of a relay node for communication while drilling.
FIG. 3 is a block diagram of data transmission in a self-powered while drilling communication system.
FIG. 4 is a design structure diagram of a self-powered while-drilling communication relay node
Detailed description of the preferred embodiments
In order to make the technical solutions of the present invention better understood, the following description of the technical solutions of the present invention with reference to the accompanying drawings of the present invention is made clearly and completely, and other similar embodiments obtained by a person of ordinary skill in the art without any creative effort based on the embodiments in the present application shall fall within the protection scope of the present application.
The first problem of the existing underground communication system for petroleum drilling is that the currently generally adopted mud pulse method is slow in information transmission speed, low in transmission speed and poor in anti-interference capability. The second oil drilling communication equipment and other equipment supply energy, a centralized energy supply mode is adopted at present, the equipment mainly adopts a turbine generator and a battery pack, and the problems of short working time and high cost exist in practical application. The cost of stopping drilling operations due to power supply problems is significant, and self-powered while-drilling communication relay nodes provide a new solution by being distributed on each drill pipe and utilizing the characteristics of distributed downhole energy collection on each drill pipe. The self-energy supply and the communication while drilling relay node are combined, the long-time work of the communication while drilling relay node in various extreme wells can be guaranteed, the follow-up cost of a large amount of financial resources and manpower for maintenance is avoided, and the wireless remote control relay node has the advantages of being small in size, convenient to deploy and high in anti-interference capacity. Meanwhile, compared with the traditional mud pulse method, the method increases the information transmission speed.
Example 1:
embodiment 1 is a self-powered while-drilling communication relay node, including an energy supply system, a while-drilling communication relay node; the energy supply system collects underground energy to supply power for the relay node during the communication while drilling; as shown in fig. 1, the energy supply system includes an energy conversion module, an energy management storage module; the energy conversion module collects underground energy, converts the underground energy into electric energy and transmits the electric energy to the energy management and storage module; and after the energy management and storage module generates energy and performs storage management, the energy management and storage module supplies power to the while-drilling communication relay node at fixed time intervals.
The underground energy is converted into the electric energy by using the self-energy supply technology, the self-energy supply while-drilling communication relay node is realized, the energy consumption of the while-drilling communication relay node is saved, and the underground energy is recycled.
Further, the energy conversion module is one or more of a friction nano generator and a piezoelectric nano generator. And deploying the actual energy conversion module according to the actual geographic position, the working content and other conditions of the relay node during the communication while drilling. Mechanical energy is converted into electric energy to supply power to the while-drilling communication relay node, normal work of the while-drilling communication relay node in various limited wells can be guaranteed, and follow-up cost of a large amount of financial resources and manpower for maintenance is avoided.
Further, the energy management storage module comprises an energy storage element, a timer and a voltage comparator; the relay node for communication while drilling acquires the electric quantity of the energy storage element, and sends the electric quantity value to a subsequent relay node for communication while drilling, so that the electric quantity value is transmitted to a ground control end. The method is beneficial to monitoring the working state of each node.
Further, as shown in fig. 2, the communication while drilling relay node includes a wireless receiving module, a data processing module 1, a data processing module 2, and a wireless transmitting module.
Further, the wireless receiving module comprises a receiving coil and a corresponding circuit component, and the wireless receiving module comprises a transmitting coil and a corresponding circuit component; the receiving coil and the transmitting coil are respectively arranged at two ends of the drill rod. And the receiving coil is coupled with the transmitting coil of the while-drilling communication relay node on the previous drill rod and used for wirelessly receiving the coupled signal. And the transmitting coil is coupled with a receiving coil of a communication while drilling relay node on the next drill rod and used for wirelessly transmitting a coupling signal. The data processing module 1 preprocesses the information received by the wireless receiving module.
Further, the preprocessing of the downhole information received by the wireless receiving module by the data processing module 1 specifically includes: the data processing module identifies and preliminarily processes the data received by the wireless receiving module, wakes up the data processing module 2 and transmits the data to the data processing module 2.
Further, the data processing module 2 further processes the data received from the data processing module 1, specifically: after the data processing module 2 collects the electric quantity information of the energy storage element, the data after the preprocessing is further processed are waken up the wireless transmitting module and the processed data are transmitted, and the wireless transmitting module wirelessly transmits the data to the next while-drilling communication relay node after receiving the data.
Further, when the timer of the relay node of communication while drilling sends a timing pulse, the voltage comparator judges the electric quantity of the energy storage element. When the electric quantity value of the energy storage element is greater than or equal to V1, the data processing module 1 preprocesses the downhole data received by the wireless receiving module, wakes up the data processing module 2, and transmits information to the data processing module 2. When the timer generates timing pulses and the electric quantity value of the energy storage element reaches a certain value, subsequent work is carried out so as to ensure the work of high stability of the self-powered while-drilling communication relay node and realize the while-drilling communication with small network delay, high real-time performance and good synchronism. The problem that the normal operation of the whole system is influenced due to unstable work of the while-drilling communication relay nodes when the relay nodes are not synchronous or the electric quantity value of the energy storage element is low or errors in work is avoided.
Furthermore, the wireless receiving module is one of an electromagnetic wave signal receiving device and a magnetic coupling receiving device.
Further, the wireless transmitting module is one of an electromagnetic wave signal transmitting device and a magnetic coupling transmitting device.
Example 2:
the present embodiment is an implementation manner of the present invention, and is described with reference to the accompanying drawings, fig. 3 is a transmission block diagram of data in a self-powered communication while drilling system, and fig. 4 is a design structure diagram of a self-powered communication while drilling relay node in the system:
and (3) manufacturing a self-powered while-drilling communication system by using an energy management algorithm, wherein a self-powered while-drilling communication relay node is deployed on each drill pipe. In the drilling process, a large number of friction nanometer generators distributed on the drill rod supply the relay nodes for communication while drilling to work by collecting abundant vibration energy of the drill rod. The while-drilling communication relay node receives the underground information sent by the while-drilling communication relay node on the previous drill rod at fixed time intervals and wirelessly sends the information to the while-drilling communication relay node on the next drill rod, the underground data collected by the sensor can be timely transmitted to the ground control end from the underground through the while-drilling communication relay nodes distributed on each drill rod, and the ground control end can timely make a judgment through the received information, so that the drilling process is perfected. Compared with the traditional communication while drilling system, the novel system has the advantages of simpler deployment, higher transmission speed, longer service life and capability of saving a large amount of energy.
In order to realize the functions, a self-powered while-drilling communication relay node is distributed on each drill rod, and each self-powered while-drilling communication relay node consists of a smaller part; the energy acquisition module of the self-powered while-drilling communication relay node is configured on the drill rod, and in the drilling process, the drill rod can generate abundant vibration energy, the types comprise torsional vibration, transverse vibration and longitudinal vibration, the energy can be obtained by the energy obtaining module and electric energy can be generated, then the part of the electric energy is changed into stable energy through rectification and is stored in an electrolytic capacitor as an energy storage element, and when the energy is enough at fixed time intervals, energy is supplied to the corresponding relay node while drilling, the magnetic coupling receiving device receives a data signal transmitted by the previous relay node through a magnetic coupling receiving coil at one end of the drill pipe, the MCU1 and the MCU2 respectively preprocess and further identify and process the data, and finally the magnetic coupling transmitting device transmits the processed data to a magnetic coupling receiving antenna of the next relay node while drilling through a magnetic coupling transmitting coil at the other end of the drill pipe. Because the while-drilling communication relay nodes on each drill rod receive, identify, process and transmit information, and the receiving coils and the transmitting coils of the adjacent while-drilling communication relay nodes are very close to each other, the self-powered while-drilling communication system has the characteristic of strong anti-interference capability.
All of the features disclosed in this specification, or all of the steps of any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive. Any feature disclosed in this specification (including any accompanying claims, abstract) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.
Claims (12)
1. A communication while drilling relay node based on self-powered energy is characterized by comprising an energy supply system and a communication while drilling relay node;
the energy supply system collects underground energy to supply power for the relay node during the communication while drilling;
the energy supply system comprises an energy conversion module and an energy management and storage module; the energy conversion module collects underground energy, converts the underground energy into electric energy and transmits the electric energy to the energy management and storage module; the energy management and storage module stores and manages the energy generated by the energy conversion module and then supplies power to the while-drilling communication relay node at fixed time intervals.
2. The communication-while-drilling relay node based on self-power supply as claimed in claim 1, wherein the communication-while-drilling relay node comprises a wireless receiving module, a data processing module 1, a data processing module 2 and a wireless transmitting module.
3. The self-powered while-drilling communication relay node as claimed in claim 2, wherein the energy conversion module is one or more of a friction nano generator and a piezoelectric nano generator.
4. The communication-while-drilling relay node based on self-powered energy, according to claim 3, wherein the energy management and storage module comprises an energy storage element, a voltage comparator and a timer; the communication while drilling relay node acquires the electric quantity of the energy storage element, stores the electric quantity value of the energy storage element, periodically sends the electric quantity value to a subsequent relay node, and then transmits the electric quantity value to a ground control end.
5. The self-powered while-drilling relay node as recited in claim 4, wherein the wireless receiving module comprises a receiving coil and a circuit component for wireless receiving, and is used for receiving downhole data transmitted by a previous while-drilling relay node; the wireless transmitting module comprises a transmitting coil and a circuit component for wireless transmission, and is used for transmitting the downhole data to the next communication-while-drilling relay node. The data processing module 1 identifies and preprocesses the received downhole data.
6. The self-powered while-drilling communication relay node as claimed in claim 5, wherein the receiver coil and the transmitter coil are respectively located at two ends of a drill pipe, and the receiver coil is coupled with the transmitter coil of the relay node for wireless reception of the coupled signal; and the transmitting coil is coupled with a receiving coil of the while-drilling communication relay node on the next drill rod and is used for wirelessly transmitting a coupling signal.
7. The self-powered while-drilling communication relay node as claimed in claim 5, wherein the data processing module 1, the data processing module 2, the circuit component for wireless transmission of the wireless transmitting module and the circuit component for wireless receiving of the wireless receiving module are all centralized in a cavity on the wall of the drill pipe near the middle point of the drill pipe or integrated on a circuit board and are powered by the power supply system.
8. The self-powered while-drilling communication relay node as claimed in claim 5, wherein the processing of the downhole data received by the wireless receiving module by the data processing module 1 is specifically as follows: the data processing module identifies and preprocesses the downhole data received by the wireless receiving module, wakes up the data processing module 2 and transmits the data to the data processing module 2.
9. The self-powered while-drilling communication relay node as claimed in claim 5, wherein the data processing module 2 is configured to process the received preprocessed data specifically as follows: the data processing module 2 acquires the electric quantity information of the energy storage element, further processes the received preprocessed data, wakes up the wireless transmitting module and transmits the further processed data, and the wireless transmitting module wirelessly transmits the data to the next communication while drilling relay node after receiving the data.
10. The communication-while-drilling relay node based on self-power supply as claimed in claim 5, wherein when the timer of the communication-while-drilling relay node sends a timing pulse, the voltage comparator compares the voltage value of the energy storage element, when the electric quantity value of the energy storage element is greater than or equal to V1, the data processing module 1 preprocesses the downhole data received by the wireless receiving module, sends the preprocessing result to the data processing module 2, and the data processing module 2 wakes up the wireless transmitting module of the corresponding communication-while-drilling relay node after further processing and transmits the processed data.
11. The self-powered while-drilling communication relay node according to any one of claims 5 to 9, wherein the wireless receiving module is one of a magnetic coupling receiving device and an electromagnetic wave signal receiving device.
12. The self-powered communication-while-drilling relay node as claimed in any one of claims 5 to 9, wherein the wireless transmission module is one of a magnetic coupling transmission device and an electromagnetic wave signal transmission device.
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