Well logging site wireless transmission and dynamic monitoring method under complex electromagnetic interference

Abstract

The invention discloses a logging site wireless transmission and dynamic monitoring method under complex electromagnetic interference, and relates to the technical field of data processing and intelligent equipment manufacturing, and the method comprises the following steps: S1, adding a wireless short section to a sensor in wired connection on a logging site, and carrying out wireless short section transformation; s2, detecting a frequency spectrum signal of a main wireless interference signal on a drilling and logging site, and determining an optimal transmitting channel of a wireless short section and a wireless node; s3, using the information determined in the step S2 to make and install a wireless node with a centerless design, and transmitting a signal; s4, network access, networking and grid connection are carried out on the manufactured wireless nodes and the transformed wireless short sections; and S5, performing visual monitoring on the logging field data by using the cloud monitoring terminal, the comprehensive logging system and the command decision-making system. According to the invention, the method for improving the wireless short section of the sensor is suitable for a main on-service comprehensive logging sensor; the combination mode of the wireless nodes and the wireless short sections is suitable for rapid wireless reloading of traditional comprehensive logging equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of data processing and intelligent equipment manufacturing, and more specifically to a method for wireless transmission and dynamic monitoring of well logging site under complex electromagnetic interference. Background Art

[0002] The comprehensive logging instrument is one of the core equipment for logging. Through various sensors installed in various parts of the well site, it can obtain a wealth of drilling engineering and drilling fluid performance parameters, and monitor the drilling conditions and drilling fluid performance in real time. At present, there are as many as dozens of sensors at the logging site, such as density sensors, temperature sensors, flow sensors, conductivity sensors, etc. at the drilling fluid outlet, density sensors, temperature sensors, flow sensors, conductivity sensors, etc. at the drilling fluid inlet, pool volume sensors in the mud pool, winch sensors, torque sensors, force pressure sensors, hook load sensors, etc. on the drilling platform, and pump stroke sensors at the mud pump. Through these sensors, drilling engineering parameters, drilling fluid parameters, etc. can be obtained. By analyzing these parameters, the drilling fluid engineering conditions and drilling anomalies can be monitored.

[0003] like Fig.10 As shown in the figure, the existing logging equipment usually uses wired cable communication to ensure the communication and connection of local area networks such as sensors and logging terminal computers at the drilling site. Various wiring is intricately distributed in the well site, and the sensor disassembly and installation workload is large and the wiring is cumbersome. The installation and disassembly during the moving and construction process can easily lead to aging and damage of the wiring head, unstable connection, and signal loss, so that the sensor cannot detect the signal or the data is distorted, affecting the accuracy and reliability of the data collected by the comprehensive logging instrument. If the traditional wired sensor is designed for wireless transmission, by constructing a wireless sensor network, wireless sensor signal collection and transmission can be realized, which greatly reduces the workload of sensor installation and disassembly at the logging site, improves the stability and reliability of signal detection, and is expected to improve the construction environment of the drilling site, improve the efficiency of sensor installation and disassembly, and reduce the data transmission risk caused by cable aging and damage. Therefore, optimizing the layout of well site sensors is of great significance to improving the technical level of logging data collection. Summary of the invention

[0004] In order to quickly and conveniently overcome the defects existing in the above-mentioned existing mainstream technologies while minimizing changes and additional investments, the present invention discloses a method for wireless transmission and dynamic monitoring of logging site under complex electromagnetic interference. The purpose of the present invention is to solve the following problems in the prior art: ① The electromagnetic environment at the drilling and logging site is complex and changeable, and there is a problem of wireless transmission stability under strong interference conditions; ② There are many restricted spaces at the drilling and logging site, and the choice of installation locations for the wireless system is small, and the volume requirement is high; ③ For the convenience of spare parts and emergency response, a decentralized wireless node should be adopted to adapt to multiple application scenarios; ④ The detection, monitoring and visualization of wireless connection conditions and the status of each node in the wireless system.

[0005] In the present invention, ① the integrated logging data transmission system connected by traditional wired cables is realized through a wireless node solution with small size, strong versatility and reliability that meets the requirements to achieve rapid overall replacement and upgrade; ② the key sensors are modified and equipped with wireless short sections to achieve wireless access to the network; ③ the status of each sensor is detected and monitored by wireless nodes to achieve wireless and equipment status monitoring and visualization. The present invention is used in the case where the drilling and logging site needs to transmit logging data over a short distance with high stability under strong interference conditions and realize transmission status monitoring; additional conditions and requirements are the need for encryption and explosion-proof.

[0006] In order to achieve the above objectives, the technical solution adopted by the present invention is:

[0007] A method for wireless transmission and dynamic monitoring of mud logging on-site under complex electromagnetic interference comprises the following steps:

[0008] 1. Installation and modification of wireless short section

[0009] S1. Install wireless short sections on the sensors connected by wires at the logging site to transform them into wireless short sections;

[0010] Preferably, the step S1 includes: cutting the long cable connecting the existing sensor at the logging site and the sensor bus wired node box, and converting it into a short-line aircraft carrier plug, and then connecting the short-line aircraft carrier plug to a wireless short section.

[0011] Preferably, the wireless short section includes:

[0012] Explosion-proof and corrosion-resistant housing;

[0013] An aviation explosion-proof male plug mounted on the housing, the aviation explosion-proof male plug matching the short-line aviation female plug;

[0014] A status sensor installed in the housing and connected to the aviation explosion-proof male plug, the status sensor being used to collect sensor status information input by the aviation explosion-proof male plug and perform rapid diagnosis;

[0015] A conversion circuit installed in the housing and connected to the state sensor, the conversion circuit is used to convert a special sensor signal source into a universal data source for the wireless short section and the wireless network in which it is located;

[0016] A wireless transmitter installed in the housing and connected to the conversion circuit, the wireless transmitter is used to send the converted data into a wireless network;

[0017] A receiving processor mounted in the housing, the receiving processor being used to receive a wireless node request to process a simple system instruction;

[0018] An explosion-proof battery is assembled in the housing, and the explosion-proof battery is isolated from the state sensor, the conversion circuit, the wireless transmitter, and the receiving processor, and is used to power the wireless short section and the sensor.

[0019] In the present invention, the hardware structure of the wireless short section is designed as follows: an aviation male plug that matches the aviation female plug, and a conversion circuit are used to convert the special sensor signal source into a common data source for the wireless short section and the wireless network in which it is located; the wireless transmitter sends the converted data into the wireless network; the wireless short section obtains the current basic status of the sensor through data analysis and delivers it into the wireless network; receives wireless node requests and performs response actions, such as power on, power off and parameter setting; and the explosion-proof battery supplies power to the wireless short section and the sensor body.

[0020] In the present invention, for a certain sensor, on the one hand, the aviation explosion-proof plug ensures the stability and safety of the connection; the state sensor can efficiently collect sensor state information and perform rapid diagnosis; the conversion circuit is used for signal transcoding; the wireless transmitter is used to quickly transmit signals, and the receiving processor processes simple system instructions. The explosion-proof battery is isolated from the wireless short section to ensure circuit stability and improve anti-interference ability; the external packaging is explosion-proof and corrosion-resistant. The overall structure is simple and suitable for rapid improvement of traditional wired sensors.

[0021] 2. Signal determination

[0022] S2. Detect the spectrum signals of the main wireless interference signals at the drilling and logging site, determine the optimal transmission channel, optimal signal transmission direction, receiving direction and signal propagation path of the wireless short section and wireless node; test the matching relationship between the single-hop applicable frequency and wavelength, and determine that the signal attenuation meets the requirements in the signal coverage area that meets the requirements of covering the entire well site;

[0023] In the above steps, the purpose of determining the optimal transmission channel is to avoid the influence of complex electromagnetic interference caused by large electrical appliances and motors running in the drilling and logging site on the established logging wireless transmission system. The frequency bands and channels of existing interference are identified by handheld devices for measurement, the main interference sources are determined, and then the channel with the least interference is selected for communication.

[0024] The purpose of determining that the signal attenuation meets the requirements within the signal coverage area that meets the requirements of covering the entire well site is to: 1. Ensure that the signal strength, delay and data transmission quality meet the basic requirements (in accordance with industry regulations); 2. Reduce investment and replace the existing wired cable connected logging sensors, logging acquisition instruments and integrated logging instruments in large quantities at low cost and high efficiency through wireless short sections and wireless node networking. Break through the limitations of wired cables.

[0025] Preferably, the S2 step comprises the following steps:

[0026] S21, setting up wireless nodes and wireless short joints at the drilling and logging site to perform multiple fixed-point repeated measurements, and obtaining the i-th measurement value Fi of a certain position j and the average value Fj of the wireless signal at the point;

[0027] Preferably, in step S21, a handheld or desktop wireless signal spectrum detector is used for measurement.

[0028] S22. By quantitatively superimposing the wireless node working area and the wireless signal interference detection area, the frequency and interference intensity of the main electromagnetic interference are calculated, and the frequency band F0 with the lowest electromagnetic interference is selected as the main working frequency of the wireless node, followed by other frequency bands with lower interference.

[0029] Preferably, in step S2, the optimal transmission channel is the interference sum C θ The minimum transmission channel, the total interference C θ The determination of the minimum transmission channel includes the following steps:

[0030] Determine the geodetic or relative coordinates and combine the measured location altitude to form a four-dimensional coordinate system Z i (x i ,y i ,z i ,w i ), where x i ,y i ,z i , are the measured ordinate, abscissa and elevation of the coordinate system, respectively, and Wi is the reading of the spectrum signal value measured at the same point of the corresponding point;

[0031] The four-dimensional coordinate system is converted into a two-dimensional coordinate system, and the gradient descent method is used to solve the interference sum C in the two-dimensional coordinate system θ Minimum value.

[0032] In the present invention:

[0033] (1) Collecting signals and setting coordinate systems: Using handheld or other devices including but not limited to GPS to measure geodetic or relative coordinates, combined with the altitude (height above the ground) of the measurement location, a four-dimensional coordinate system is formed. For a certain measurement point, it can be expressed as Z i (x i ,y i ,z i ,w i ), where x i ,y i ,z i , are the ordinate, abscissa and elevation of the coordinate system measured by GPS or other positioning tools respectively. Wi is the reading of the spectrum signal value measured at the same point in the corresponding point, usually in signal frequency intensity, in kHz or MHz.

[0034] (2) Dimensionality reduction and simplification problem: Since the installation location of the wireless node is generally a fixed value to ensure the convenience of maintenance, it is simplified to a two-dimensional coordinate system to find the best path to ensure that the wireless node and short-section layout locations are the optimal solution with the lowest signal interference, that is, the overall interference value is minimized.

[0035] That is, solve min(C θ ) is the minimum value of .

[0036]

[0037] (3) The solution is usually obtained by using a gradient descent method or other methods.

[0038] 3. Wireless Node Production

[0039] S3, using the information determined in step S2, making and installing wireless nodes without central design and transmitting signals;

[0040] In step S3, to make wireless nodes without a central design, it is necessary to use the optimal layout position and communication signal path information in step S2. The specific utilization relationship is: on the optimal communication channel determined by S2, that is, the total interference C θ Minimize the environmental interference caused by the deployment of wireless short sections and wireless nodes throughout the entire path.

[0041] Preferably, the wireless node includes:

[0042] A control circuit, the control circuit is used for processing video digital signals and video decoding and output, and the control circuit is connected to a video input and video output interface;

[0043] A wireless module connected to the control circuit, the wireless module is used to receive and transmit wireless signals;

[0044] A transcoding module connected to the wireless module, the transcoding module is used to transfer internal digital signals, convert logging node box signals-internal digital signals, and perform forward and reverse transcoding;

[0045] A backward compatible wired module connected to the transcoding module, the backward compatible wired module is used for emergency situations, is independent of the device body, is connected to a wired cable communication module of a traditional wired cable, and is used for grabbing the line;

[0046] A battery pack connected to the control circuit, the wireless module, the transcoding module and the backward compatible wired module, the battery pack being used to power the control circuit, the wireless module, the transcoding module and the backward compatible wired module;

[0047] A power supply voltage reduction and protection module connected to the battery pack is used to reduce the power supply voltage and protect the battery pack.

[0048] In the present invention, the main hardware parts of the wireless node are constituted by a control circuit, a wireless module, a transcoding module, a backward compatible wired module, a battery pack, and a power supply step-down and protection module. The control circuit is used to process video digital signals and video decoding, output, etc., and is connected to the video input and video output interfaces. The wireless module is used to receive and transmit wireless signals, etc., and is mainly connected to the video control circuit and the transcoding module to provide the necessary network throughput for the wireless node. The transcoding module is used to transfer internal digital signals; convert the logging node box signal-internal digital signal; and has forward and reverse transcoding. The backward compatible wired module is used for wired cable communication modules that can connect traditional wired cables without relying on the device body in emergency situations, and is used to grab lines, etc.

[0049] 4. Node and short-section network access, networking and grid connection

[0050] S4. The manufactured wireless nodes and modified wireless short sections are connected to the network, networked and connected to the network. The sensor data and video data of the logging site are transmitted to the cloud monitoring terminal, the integrated logging system and the command and decision-making system through the wireless nodes and wireless short sections after the connection, networking and connection to the network;

[0051] In the present invention, wireless node hardware support is designed that can switch functions through software and hardware switching, realizes one hardware design and four working modes, and realizes three wireless nodes of one kind to connect the four scenes of circulating tank sensor, node box, integrated logging room and command decision-making meeting room that were originally independent and required wired line connection through wireless transmission network, and provides the function of short-distance wired connection in emergency.

[0052] Preferably, the S4 step comprises:

[0053] State 1: Wired-wireless bridging function: input-transcoding-wireless output, including the original wired cable node box transmitting the logging field sensor data to the wireless node, the wireless node transcoding the data, and transmitting wireless signals to the cloud monitoring terminal for monitoring;

[0054] State 2: Wireless reception - transcoding - connection to integrated logging system: The wireless node receives the wireless signal of the logging field sensor data from the wireless sub and transcodes it, and sends the transcoded data to the integrated logging system and cloud monitoring terminal for analysis and processing;

[0055] State 3: Wireless reception - transcoding - connection to command and decision-making system: The wireless node receives the wireless signal of the logging field sensor data from the wireless short section and transcodes it, and then wirelessly sends the transcoded data to the command and decision-making system for command, conference room display and emergency standby;

[0056] State 4: When wireless communication fails, the backward compatible wired module is connected to the integrated logging system for emergency connection; the original wired cable node box transmits the logging field sensor data to the wireless node, and the wireless node sends the data to the integrated logging system for analysis and processing through the backward compatible wired module.

[0057] In the present invention, state 1 is wireless node No. 1, which is responsible for transcoding the signal of the bus node box into a wireless signal and delivering it into the wireless network. State 2 is wireless node No. 2, which is responsible for receiving the data signal to be received in the wireless network and transcoding it into codes and data that can be recognized by the integrated logging instrument. State 3 is wireless node No. 3, which is responsible for command, conference room display and emergency standby. In an emergency, it can be changed to node No. 1 or node No. 2 by switching buttons or software settings.

[0058] The above three types of wireless nodes have exactly the same hardware, and their components and functions are interchangeable, making maintenance, spare parts and material preparation convenient.

[0059] 5. Visual monitoring

[0060] S5. Use cloud monitoring terminals, integrated logging systems and command and decision-making systems to conduct visual monitoring of logging site data.

[0061] Preferably, in the step S5, wireless status parameters, status parameters of each network node and sensor, sensor data collection results, and video data are loaded into the ad hoc wireless network and provided to nodes and users with network access qualifications for query.

[0062] Preferably, in the S5 step, the data stream is divided into two categories: conventional encryption and cloud encryption. Cloud encrypted data needs to be connected to the private enterprise cloud to enter a high-level dedicated data transmission network; conventional encrypted data, including video, status data, and diagnostic data, is transmitted in a self-built wireless network local area through on-site encryption.

[0063] Preferably, in the step S5, the wireless status and network and connection status parameters of each sensor and node are accessed to the well site, off-site or remotely logged in through an encrypted wide area network for viewing, and are highlighted and presented through a transparent modeling edge and a transparent display.

[0064] In the present invention, the following points need to be explained in particular:

[0065] ① The hardware conditions for realizing short-distance transmission within the drilling and logging well site without a center include: first, multifunctional hardware with a center that can switch states by software or hardware; second, adjacent or designated adjacent nodes in the network relay signal transmission between two nodes; third, the hardware and software of the wireless short section and the wireless node are collaboratively compatible, and can complete the identification of each other's unique network access identity through a self-organized wireless network.

[0066] ② The software conditions for realizing short-distance transmission within the decentralized drilling and logging well site include: first, the decentralized network is compatible with the asymmetric rapid discovery, identification and compatible access of wireless nodes and wireless short sections; second, the software assists wireless nodes and wireless short sections to achieve load and power consumption balance, thereby extending online time and stability.

[0067] ③The difference between wireless nodes and wireless segments: First, wireless segments are smaller and can only be powered by batteries, while wireless nodes are larger and can be powered by batteries and 24V low-voltage power. Second, wireless segments can only send and transmit data and their own status information to wireless nodes, and cannot receive and process encrypted or non-encrypted data sent and transmitted by other wireless segments or wireless nodes on the network. Third, the structure of wireless segments tends to be integrated, while wireless nodes tend to be modular, and the requirements for volume and weight are not as stringent as for segments.

[0068] Beneficial effects of the present invention:

[0069] In the present invention, the sensor wireless short section improvement method is applicable to the main in-service integrated logging sensors; the wireless node and wireless short section combination method is applicable to the rapid wireless replacement of traditional integrated logging equipment; the state perception method is applicable to remote command and decision-making.

[0070] In the present invention, a centerless relay transmission networking mode is set up with low energy consumption and good stability; the centerless node can switch different working states, which can reduce the difficulty of inventory preparation and can be used for rapid replacement in emergency situations; the logging sensor parameters are indirectly monitored through the wireless network, which can realize a larger range of networking and dynamic status monitoring and decision-making and command use.

[0071] The present invention realizes rapid wireless transmission upgrade of traditional equipment by rapidly deploying a centerless network with 2-3 wireless nodes as the backbone in a traditional wired connection system.

[0072] In the present invention, when wireless node No. 1 responsible for the first-hop transmission of the wireless network fails and cannot continue to work; if node No. 1 responsible for transcoding fails, node No. 3 can be used directly to replace the function of node No. 1 through simple settings and switching states.

[0073] In the present invention, when the wireless network is suddenly interrupted due to force majeure, the module compatible with the wired communication is urgently connected; the traditional aviation 4-core-3-core cable can be directly inserted into the backward compatible aviation socket and connected to the integrated logging equipment and facilities to restore the wired cable connection state. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] Figure 1 The main implementation scheme and process of the present invention;

[0075] Figure 2 This is a schematic diagram of shortening and modifying the sensor of the present invention and installing a wireless short section;

[0076] Figure 3 It is a counting diagram of the wireless signal coverage strength in the area of ​​the present invention;

[0077] Figure 4 This is a hardware module diagram of a wireless node of the present invention;

[0078] Figure 5 Schematic diagram of state 1 and state 4 of the present invention;

[0079] Figure 6 This is a schematic diagram of state 2 of the present invention;

[0080] Figure 7 This is a schematic diagram of state 3 of the present invention;

[0081] Figure 8 A schematic diagram of unified sensing, acquisition and monitoring of sensor and wireless status data of the present invention;

[0082] Fig. 9 It is a schematic diagram of wireless transmission and dynamic monitoring of the present invention;

[0083] Fig.10 This is a schematic diagram of the original cable layout of the logging communication points;

[0084] Fig.11 This is a schematic diagram of improving the original communication layout by wireless networking of logging communication points according to the present invention. DETAILED DESCRIPTION

[0085] The concept, specific structure and technical effects of the present invention will be clearly and completely described below in combination with the embodiments and drawings to fully understand the purpose, characteristics and effects of the present invention.

[0086] Example 1

[0087] A method for wireless transmission and dynamic monitoring of mud logging on-site under complex electromagnetic interference, such as Figure 1 , 8 , 9 and 11, comprising the following steps:

[0088] S1. Install wireless short sections on the sensors connected by wires at the logging site to transform them into wireless short sections;

[0089] S2. Detect the spectrum signals of the main wireless interference signals at the drilling and logging site, determine the optimal transmission channel, optimal signal transmission direction, receiving direction and signal propagation path of the wireless short section and wireless node; take the wireless node signal transmission of one-to-one communication as one hop, test the matching relationship between the applicable frequency and wavelength of a single hop, and determine that the signal attenuation meets the requirements in the signal coverage area that meets the requirements of covering the entire well site;

[0090] S3, using the information determined in step S2, making and installing wireless nodes without central design and transmitting signals;

[0091] S4. The manufactured wireless nodes and modified wireless short sections are connected to the network, networked and connected to the network. The sensor data and video data of the logging site are transmitted to the cloud monitoring terminal, the integrated logging system and the command and decision-making system through the wireless nodes and wireless short sections after the connection, networking and connection to the network;

[0092] S5. Use cloud-based monitoring terminals, integrated logging systems and command and decision-making systems with data encryption technology to conduct visual monitoring of logging site data.

[0093] Example 2

[0094] This embodiment further describes step S1 based on embodiment 1.

[0095] The step S1 includes: cutting the long cable connecting the existing sensor at the logging site and the sensor bus wired node box, and converting it into a short-line aircraft carrier plug, and then connecting the short-line aircraft carrier plug to a wireless short section.

[0096] In this embodiment, the hardware structure design of the wireless short section is as follows Figure 2 As shown: the aviation male plug that matches the aviation female plug and the conversion circuit are used to convert the special sensor signal source into a universal data source for the wireless short section and the wireless network; the wireless transmitter sends the converted data into the wireless network; the wireless short section obtains the basic status of the current sensor through data analysis and delivers it into the wireless network; receives wireless node requests and responds, such as power on, power off and parameter setting; the explosion-proof battery powers the wireless short section and the sensor body.

[0097] In this embodiment, for a certain sensor, on the one hand, the aviation explosion-proof plug ensures the stability and safety of the connection; the state sensor can efficiently collect sensor state information and perform rapid diagnosis; the conversion circuit is used for signal transcoding; the wireless transmitter is used to quickly transmit signals, and the receiving processor processes simple system instructions. The explosion-proof battery is isolated from the wireless short section to ensure circuit stability and improve anti-interference ability; the external packaging is explosion-proof and corrosion-resistant. The overall structure is simple and suitable for rapid improvement of traditional wired sensors.

[0098] Example 3

[0099] This embodiment further describes step S2 based on embodiment 2.

[0100] The S2 step includes the following steps:

[0101] S21, set up wireless nodes and wireless short joints at the drilling and logging site to perform multiple fixed-point repeated measurements, and obtain the i-th measurement value Fi of a certain position j and the average value Fj of the wireless signal at the point, such as Figure 3 As shown;

[0102] Fj=∑Fi

[0103] In the step S21, a handheld or desktop wireless signal spectrum detector is used for measurement.

[0104] S22. By quantitatively superimposing the wireless node working area and the wireless signal interference detection area, the frequency and interference intensity of the main electromagnetic interference are calculated, and the frequency band F0 with the lowest electromagnetic interference is selected as the main working frequency of the wireless node, followed by other frequency bands with lower interference.

[0105] In this embodiment:

[0106] (1) Collecting signals and setting coordinate systems: Using handheld or other devices including but not limited to GPS to measure geodetic or relative coordinates, combined with the altitude (height above the ground) of the measurement location, a four-dimensional coordinate system is formed. For a certain measurement point, it can be expressed as Z i (x i ,y i ,z i ,w i ), where x i ,y i ,z i , are the ordinate, abscissa and elevation of the coordinate system measured by GPS or other positioning tools respectively. Wi is the reading of the spectrum signal value measured at the same point in the corresponding point, usually in signal frequency intensity, in kHz or MHz.

[0107] (2) Dimensionality reduction and simplification problem: Since the installation location of the wireless node is generally a fixed value to ensure the convenience of maintenance, it is simplified to a two-dimensional coordinate system to find the best path to ensure that the wireless node and short-section layout locations are the optimal solution with the lowest signal interference, that is, the overall interference value is minimized.

[0108] That is, solve min(C θ ) is the minimum value of .

[0109]

[0110] (3) The solution is usually obtained by using a gradient descent method or other methods.

[0111] Example 4

[0112] This embodiment further describes step S3 based on embodiment 3.

[0113] In this embodiment, Figure 4 As shown, the main hardware parts of the wireless node are composed of control circuits, wireless modules, transcoding modules, backward compatible wired modules, battery packs, and power step-down and protection modules. The control circuit is used to process video digital signals and video decoding and output, etc., and is connected to the video input and video output interfaces. The wireless module is used to receive and transmit wireless signals, etc., and is mainly connected to the video control circuit and transcoding module to provide the necessary network throughput for the wireless node. The transcoding module is used to transfer internal digital signals; convert logging node box signals-internal digital signals; and has forward and reverse transcoding. The backward compatible wired module is used for emergency situations. It is a wired cable communication module that can connect to traditional wired cables without relying on the main body of the device, and is used to grab the line, etc.

[0114] Example 5

[0115] This embodiment further describes step S4 based on embodiment 4.

[0116] In this embodiment, wireless node hardware support is designed that can switch functions through software and hardware switching, realize 1 hardware design and 4 working modes, and realize 3 wireless nodes of 1 type to connect the 4 scenes of circulating tank sensor, node box, integrated logging room and command decision-making meeting room that were originally independent and required wired connection through wireless transmission network, and provide short-distance wired pre-emptive connection function in emergency situation.

[0117] The S4 step includes:

[0118] like Figure 5As shown, state 1: wired-wireless bridging function: input-transcoding-wireless output, including the original wired cable node box transmitting the logging field sensor data to the wireless node, the wireless node transcoding the data, and transmitting wireless signals to the cloud monitoring terminal for monitoring;

[0119] like Figure 6 As shown, state 2: wireless reception-transcoding-connection to integrated logging system: the wireless node receives the wireless signal of the logging field sensor data of the wireless short section and transcodes it, and sends the transcoded data to the integrated logging system and the cloud monitoring terminal for analysis and processing;

[0120] like Figure 7 As shown, state 3: wireless reception-transcoding-connection to the command decision system: the wireless node receives the wireless signal of the logging field sensor data of the wireless short section and transcodes it, and wirelessly sends the transcoded data to the command decision system for command, conference room display and emergency standby;

[0121] like Figure 5 As shown, state 4: when the wireless communication fails, the backward compatible wired module is connected to the integrated logging system for emergency connection; the original wired cable node box transmits the logging field sensor data to the wireless node, and the wireless node sends the data to the integrated logging system for analysis and processing through the backward compatible wired module.

[0122] In this embodiment, state 1 is wireless node No. 1, which is responsible for transcoding the signal of the bus node box into a wireless signal and delivering it into the wireless network. State 2 is wireless node No. 2, which is responsible for receiving the data signal to be received in the wireless network and transcoding it into codes and data that can be recognized by the integrated logging equipment. State 3 is wireless node No. 3, which is responsible for command, conference room display and emergency standby. In an emergency, it can be changed to node No. 1 or node No. 2 by switching buttons or software settings.

[0123] The above three types of wireless nodes have exactly the same hardware, and their components and functions are interchangeable, making maintenance, spare parts and material preparation convenient.

[0124] Example 6

[0125] This embodiment further describes step S5 based on embodiment 5.

[0126] In the step S5, wireless status parameters, status parameters of each network node and sensor, sensor data collection results, and video data are loaded into the self-organizing wireless network and provided to nodes and users with network access qualifications for query.

[0127] In the S5 step, the data stream is divided into two categories: conventional encryption and cloud encryption. Cloud encrypted data needs to be connected to the private enterprise cloud to enter the high-level dedicated data transmission network; conventional encrypted data, including video, status data, and diagnostic data, is transmitted in the self-built wireless network local area through on-site encryption.

[0128] In the step S5, the wireless status and network and connection status parameters of each sensor and node are accessed to the well site, off-site or remotely logged in through an encrypted wide area network, and are highlighted and presented through a transparent modeling edge and a transparent display.

[0129] The above is a specific description of the implementation mode of the present invention, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalents or substitutions are all included in the scope defined by the claims of the present invention.

Claims

1. A method for wireless transmission and dynamic monitoring of logging site under complex electromagnetic interference. It is characterized in that The following steps are involved: S1. Install wireless short sections on the sensors connected by wires at the logging site to transform them into wireless short sections; S2. Detect the spectrum signals of the main wireless interference signals at the drilling and logging site, determine the optimal transmission channel, optimal signal transmission direction, receiving direction and signal propagation path of the wireless short section and wireless node; determine that the signal attenuation meets the requirements within the signal coverage area that meets the requirements of covering the entire well site; S3, using the information determined in step S2, making and installing wireless nodes without central design and transmitting signals; S4. The manufactured wireless nodes and modified wireless short sections are connected to the network, networked and connected to the network. The sensor data and video data of the logging site are transmitted to the cloud monitoring terminal, the integrated logging system and the command and decision-making system through the wireless nodes and wireless short sections after the connection, networking and connection to the network; S5. Use cloud monitoring terminals, integrated logging systems and command and decision-making systems to conduct visual monitoring of logging site data.

2. The wireless transmission and dynamic monitoring method according to claim 1, It is characterized in that The step S1 includes: cutting the long cable connecting the existing sensor at the logging site and the sensor bus wired node box, and converting it into a short-line aircraft carrier plug, and then connecting the short-line aircraft carrier plug to a wireless short section.

3. The wireless transmission and dynamic monitoring method as claimed in claim 2, It is characterized in that The wireless short section comprises: Explosion-proof and corrosion-resistant housing; An aviation explosion-proof male plug mounted on the housing, the aviation explosion-proof male plug matching the short-line aviation female plug; A status sensor installed in the housing and connected to the aviation explosion-proof male plug, the status sensor being used to collect sensor status information input by the aviation explosion-proof male plug and perform rapid diagnosis; A conversion circuit installed in the housing and connected to the state sensor, the conversion circuit is used to convert a special sensor signal source into a universal data source for the wireless short section and the wireless network in which it is located; A wireless transmitter installed in the housing and connected to the conversion circuit, the wireless transmitter is used to send the converted data into a wireless network; A receiving processor mounted in the housing, the receiving processor being used to receive a wireless node request to process a simple system instruction; An explosion-proof battery is assembled in the housing, and the explosion-proof battery is isolated from the state sensor, the conversion circuit, the wireless transmitter, and the receiving processor, and is used to power the wireless short section and the sensor.

4. The wireless transmission and dynamic monitoring method according to claim 1, It is characterized in that The S2 step includes the following steps: S21, setting up wireless nodes and wireless short joints at the drilling and logging site to perform multiple fixed-point repeated measurements, and obtaining the i-th measurement value Fi of a certain position j and the average value Fj of the wireless signal at the point; S22. By quantitatively superimposing the wireless node working area and the wireless signal interference detection area, the frequency and interference intensity of the main electromagnetic interference are calculated, and the frequency band F0 with the lowest electromagnetic interference is selected as the main working frequency of the wireless node, followed by other frequency bands with lower interference.

5. The wireless transmission and dynamic monitoring method according to claim 1, It is characterized in that In the step S2, the optimal transmission channel is the interference sum C θ The minimum transmission channel, the total interference C θ The determination of the minimum transmission channel includes the following steps: Determine the geodetic or relative coordinates and combine the measured location altitude to form a four-dimensional coordinate system Z i (x i ,y i ,z i ,w i ), where x i ,y i ,z i , are the measured ordinate, abscissa and elevation of the coordinate system, respectively, and Wi is the reading of the spectrum signal value measured at the same point of the corresponding point; The four-dimensional coordinate system is converted into a two-dimensional coordinate system, and the gradient descent method is used to solve the interference sum C in the two-dimensional coordinate system θ Minimum value.

6. The wireless transmission and dynamic monitoring method according to claim 1, It is characterized in that The wireless node comprises: A control circuit, the control circuit is used for processing video digital signals and video decoding and output, and the control circuit is connected to a video input and video output interface; A wireless module connected to the control circuit, the wireless module is used to receive and transmit wireless signals; A transcoding module connected to the wireless module, the transcoding module is used to transfer internal digital signals, convert logging node box signals-internal digital signals, and perform forward and reverse transcoding; A backward compatible wired module connected to the transcoding module, the backward compatible wired module is used for emergency situations without relying on the main body of the device, a wired cable communication module connected to a traditional wired cable, and is used for grabbing the line; A battery pack connected to the control circuit, the wireless module, the transcoding module and the backward compatible wired module, the battery pack being used to power the control circuit, the wireless module, the transcoding module and the backward compatible wired module; A power supply voltage reduction and protection module connected to the battery pack is used to reduce the power supply voltage and protect the battery pack.

7. The wireless transmission and dynamic monitoring method according to claim 1, It is characterized in that The S4 step includes: State 1: Wired-wireless bridging function: input-transcoding-wireless output, including the original wired cable node box transmitting the logging field sensor data to the wireless node, the wireless node transcoding the data, and transmitting wireless signals to the cloud monitoring terminal for monitoring; State 2: Wireless reception - transcoding - connection to integrated logging system: The wireless node receives the wireless signal of the logging field sensor data from the wireless sub and transcodes it, and sends the transcoded data to the integrated logging system and cloud monitoring terminal for analysis and processing; State 3: Wireless reception - transcoding - connection to command and decision-making system: The wireless node receives the wireless signal of the logging field sensor data from the wireless short section and transcodes it, and then wirelessly sends the transcoded data to the command and decision-making system for command, conference room display and emergency standby; State 4: When wireless communication fails, the backward compatible wired module is connected to the integrated logging system for emergency connection; the original wired cable node box transmits the logging field sensor data to the wireless node, and the wireless node sends the data to the integrated logging system for analysis and processing through the backward compatible wired module.

8. The wireless transmission and dynamic monitoring method as claimed in claim 1, It is characterized in that In the step S5, wireless status parameters, status parameters of each network node and sensor, sensor data collection results, and video data are loaded into the self-organizing wireless network and provided to nodes and users with network access qualifications for query.

9. The wireless transmission and dynamic monitoring method as claimed in claim 1, It is characterized in that In the S5 step, the data stream is divided into two categories: conventional encryption and cloud encryption. Cloud encrypted data needs to be connected to the private enterprise cloud to enter the high-level dedicated data transmission network; conventional encrypted data, including video, status data, and diagnostic data, is transmitted in the self-built wireless network local area through on-site encryption.

10. The wireless transmission and dynamic monitoring method according to claim 1, It is characterized in that In the step S5, the wireless status and network and connection status parameters of each sensor and node are accessed to the well site, off-site or remotely logged in through an encrypted wide area network, and are highlighted and presented through a transparent modeling edge and a transparent display.

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