CN115002573A - Well site data acquisition system and method suitable for complex environment - Google Patents
Well site data acquisition system and method suitable for complex environment Download PDFInfo
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Abstract
The invention provides a well site data acquisition system and a method suitable for complex environment, wherein the well site data acquisition system comprises a front-end wireless data acquisition unit, a data acquisition aggregation unit, a wireless network bridge device and a back-end data processing unit, wherein the front-end wireless data acquisition unit is used for acquiring underground process parameters and carrying out data transmission through a first network protocol with specified frequency; the data acquisition aggregation unit collects the acquired data and sends the acquired data to the back-end data processing unit through the wireless network bridge equipment; the back-end data processing unit analyzes and calculates the output data of the front-end wireless data acquisition unit to obtain derived parameters. The invention forms a well site networking mode based on the wireless sensor, can conveniently acquire field real-time data, fills the blank of real-time data acquisition and display under the defect of a logging instrument, and has important significance for meeting the increasing requirements of drilling engineering.
Description
Technical Field
The invention relates to the technical field of oil and gas drilling and production engineering, in particular to a well site data acquisition system based on a distributed sensor and a well site data acquisition method based on the distributed sensor.
Background
Petroleum is an important fossil energy source, well drilling is a main means of petroleum exploration and development, a petroleum drilling system generally has the characteristics that the structure is complex, a drilling construction area is distributed all over the world and is widely distributed under complex surface and complex underground geological conditions such as oceans, deserts, marshes, hills, mountainous areas and the like, the complexity of drilling construction and uncertainty of a drilling construction process are increased, instrument instruments such as a drilling parameter instrument, a logging engineering parameter measuring instrument and the like can monitor the drilling working condition and engineering parameters in real time, and possible complex situations and drilling accidents are predicted in time, so that the petroleum drilling system is an important tool for monitoring the drilling process, ensuring the drilling safety, improving the drilling efficiency and reducing the drilling cost in the drilling engineering;
along with the popularization and application of an EISS system, a well site collector covers a drilling machine of an oil technical service ZJ50 and above, and the real-time data of the collector mainly come from a comprehensive logging instrument at present; however, a comprehensive logging instrument is not configured in part of well sites, key engineering data and equipment data cannot be transmitted back to a base through a collector in real time, and the site operation cannot be monitored in real time, so that the operation risk is not reduced, and the operation efficiency is not improved. For example, a patent document entitled data acquisition and monitoring system suitable for shale gas and dense gas well sites disclosed in 12/10/2014 discloses a data acquisition and monitoring system for shale gas and dense gas well sites, which is published with CN204013909U, and comprises a well site terminal subsystem for acquiring process data and video image data of the well sites; the wireless backbone network subsystem consists of a wireless public network and a wireless node network, and the wireless nodes are arranged in the area uncovered by the wireless public network in the well site; the monitoring terminal subsystem sends a corresponding control command to adjust the well site terminal subsystem; and the wireless network management subsystem is used for managing and monitoring the operating condition of the wireless backbone network subsystem in real time. The utility model discloses a wireless backbone network subsystem comprises wireless public network and wireless node network, and wherein wireless node arranges in the region that wireless public network does not cover in the well site to the wireless high of shale gas and dense gas well site has been realized covering. The patent document with the publication number of CN203366116U, which is published in 12/25/2013 and is named as an oilfield wellsite data acquisition system based on the Internet of things, discloses an oilfield wellsite data acquisition system based on the Internet of things, which comprises an RTU module, a serial port communication server connected with the RTU module, a network switch connected with the serial port communication server, a video server connected with the network switch and an indoor microwave unit; the input wireless connection of RTU module has a plurality of indicator diagram collection modules, and the input wired connection of RTU module has pressure transmitter and a plurality of beam-pumping unit motor current collection module, and the input termination of beam-pumping unit motor current collection module has current transformer, connects on the indoor microwave unit to be used for the wireless network bridge of Olympic that gives oil well field data wireless transmission for oil well monitoring center server, and the input termination of video server has the camera.
At present, no research is carried out on real-time data acquisition under the condition of loss of a logging instrument, and a well site data acquisition system and method based on a distributed sensor are not developed.
Disclosure of Invention
The present invention aims to address at least one of the above-mentioned deficiencies of the prior art. For example, one of the objectives of the present invention is to provide a system and a method for acquiring wellsite data, which can satisfy data communication at any position in a wellsite and are suitable for scenes with complex environment and more shelters.
In order to achieve the above object, the present invention provides a wellsite data acquisition system suitable for complex environments, the wellsite data acquisition system comprising a front-end wireless data acquisition unit, a data acquisition aggregation unit, a wireless bridge device and a back-end data processing unit, wherein the front-end wireless data acquisition unit comprises an acquisition module and a wireless communication module, the acquisition module is configured to acquire downhole process parameters, and the wireless communication module is connected with the acquisition module and configured to transmit data through a first network protocol with a specified frequency; the data acquisition aggregation unit comprises a networking module and a wireless transceiver module, the networking module is configured to be capable of building a wireless local area network with specified frequency so as to collect output data of the front-end wireless data acquisition unit, and the wireless transceiver module is connected with the wireless bridge equipment, is configured to receive the output data and sends the output data to the wireless bridge equipment; the back-end data processing unit is in wired connection with the wireless bridge device and is configured to analyze and calculate output data of the front-end wireless data acquisition unit to obtain derived parameters.
In an exemplary embodiment of the wellsite data acquisition system suitable for complex environments, the acquisition module may include at least one of a pressure acquisition terminal, a temperature acquisition terminal, a liquid level acquisition terminal, a rotation speed acquisition terminal, a conductance acquisition terminal and a density acquisition terminal, and each acquisition terminal forms a network in an ad hoc network manner.
In an exemplary embodiment of the wellsite data acquisition system applicable to a complex environment, the back-end data processing unit may include a parameter configuration module configured to generate tuning parameters for a designated acquisition terminal, and the wireless transceiver module may be further configured to receive the tuning parameters output by the back-end data processing unit and forward the tuning parameters to the designated acquisition terminal.
In an exemplary embodiment of the wellsite data collection system adapted for complex environments of the present invention, the front-end wireless data collection unit may further comprise a data standard processing module configured to convert downhole process parameter processing into standard digital signals.
In an exemplary embodiment of the wellsite data collection system applicable to a complex environment, the data collection and aggregation unit may further include a central processing unit and a protocol conversion module, the central processing unit is connected to the wireless transceiver module and configured to perform parsing processing on data received by the wireless transceiver module to obtain data conforming to a second network protocol; the protocol conversion module is connected with the central processing unit and is configured to forward the data conforming to the second network protocol.
In an exemplary embodiment of the wellsite data collection system adapted for use in a complex environment of the present invention, the first network protocol may be a 915MHz industry standard wireless protocol and the second network protocol may be a general purpose TCP/IP protocol.
In an exemplary embodiment of the wellsite data collection system applicable to a complex environment, the back-end data processing unit may further include a data parsing module and a display module, the data parsing module is configured to parse data conforming to the second network protocol into readable direct-measurement parameters, and calculate derived parameters of each collection terminal according to the direct-measurement parameters; the display module is configured to display the calculation result of the data analysis module.
In an exemplary embodiment of the well site data acquisition system applicable to a complex environment, the back-end data processing unit may further include a packet loss determining module and a data packet loss preventing module, wherein the packet loss determining module is configured with a packet loss determining algorithm capable of determining whether data received by the back-end data processing unit is continuous and whether a packet is lost according to a predetermined rule; the data packet loss prevention module is configured with a data packet complement and loss prevention algorithm, and can find out packet-dropping data when the packet judgment module judges that packet loss is discontinuous.
In an exemplary embodiment of the wellsite data collection system applicable to a complex environment of the present invention, the data collection aggregation unit may have a transceiving distance of not less than 200 m.
In another aspect, the present invention provides a wellsite data acquisition method suitable for complex environments, which performs wellsite data acquisition by using the wellsite data acquisition system as described above, and includes the following steps: s1, forming a well site Internet of things by using a front-end wireless data acquisition unit, a data acquisition and aggregation unit and wireless bridge equipment; s2, transmitting the collected data to a data collecting and gathering unit, and processing the collected data; and S3, transmitting the processed collected data to a back-end data processing unit for analysis and calculation to obtain derived parameters.
Compared with the prior art, the invention has the beneficial effects of at least one of the following contents:
(1) the data acquisition aggregator used by the invention adopts a novel networking mode to support the concurrent transmission of wireless data; the construction of the data acquisition aggregator network is not limited by any external conditions, and a constructor can quickly construct a data transmission network;
(2) the data acquisition aggregator can conveniently expand the number of acquisition terminals, is convenient to replace, and facilitates the network access of newly added or replaced acquisition terminals;
(3) the invention forms a well site networking mode based on the wireless sensor, can conveniently acquire field real-time data, fills the blank of real-time data acquisition and display under the defect of a logging instrument, and has important significance for meeting the continuously increasing requirements of drilling engineering;
(4) the data receiving and transmitting distance of the data acquisition collector is not less than 200m, and the communication between a front-end wireless acquisition terminal at any position in a well site and the data acquisition collector is met; meanwhile, the invention adopts the frequency band with low utilization rate to carry out two-way communication, thereby avoiding the frequency band interference of general equipment such as site interphones and the like.
Drawings
The above and other objects and/or features of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings, in which:
FIG. 1 illustrates a wireless acquisition transmission network schematic of an exemplary embodiment of the wellsite data acquisition system of the present invention.
FIG. 2 illustrates a data collection aggregator schematic block diagram of an exemplary embodiment of the wellsite data collection system of the present invention.
Detailed Description
Hereinafter, the wellsite data collection system and method of the present invention adapted for use in complex environments will be described in detail with reference to the exemplary embodiments.
It should be noted that "first," "second," and the like are merely for convenience of description and for ease of distinction, and are not to be construed as indicating or implying relative importance. It should also be noted that, unless expressly stated or limited otherwise, the terms "mounted" and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected; either wired or wireless. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.
The invention mainly aims to provide a well site data acquisition system and a well site data acquisition method suitable for complex environments.
In order to achieve the above object, the present invention provides a wellsite data acquisition system suitable for complex environments.
In one exemplary embodiment of the invention, a wellsite data collection system suitable for use in complex environments includes a front-end wireless data collection unit, a data collection aggregation unit, a wireless bridge device, and a back-end data processing unit.
The front-end wireless data acquisition unit comprises an acquisition module and a wireless communication module. The acquisition module is configured to acquire the process parameters in the pit, and the wireless communication module is connected with the acquisition module and is configured to carry out data transmission through a first network protocol with specified frequency. For example, the first network protocol may be a 915MHz industry standard wireless protocol.
The data acquisition and aggregation unit comprises a networking module and a wireless transceiving module. The networking module is configured to be capable of building a wireless local area network with a specified frequency so as to collect output data of the front-end wireless data acquisition unit. The wireless transceiver module is connected with the wireless bridge device, configured to receive the output data, and transmit to the wireless bridge device.
The back-end data processing unit is in wired connection with the wireless bridge device and is configured to analyze and calculate the output data of the front-end wireless data acquisition unit to obtain the derived parameters.
It should be noted that the output data of the front-end wireless data acquisition unit may include the self-state of each acquisition terminal, the battery level, the wireless signal strength, and the most important measured process parameters.
The front-end wireless data acquisition unit, the data acquisition aggregation unit and the wireless bridge equipment can jointly establish a special Internet of things. The data acquisition aggregation unit can build a wireless local area network with a specified frequency (for example, the frequency is 915MHZ), and an acquisition module in the front-end wireless data acquisition unit can automatically join the network and perform data interaction with the data acquisition aggregation unit. The bridge module in the data acquisition and aggregation unit is used as a slave device and can actively bridge with the wireless bridge master device through a specified frequency band, after the bridge connection is completed, the data acquisition and aggregation unit sends the received output data of the front-end wireless data acquisition unit to the bridge master device through the bridge module, and then the bridge master device transmits the data to the rear-end data processing unit.
Compared with wireless sensing in the prior art, the purpose of connecting like this is in order to increase the transmission distance of collection module among the wireless data acquisition unit of front end, also can guarantee collection module's stand-by time simultaneously. The connection mode is suitable for scenes with complex use environments and more shelters.
In this embodiment, the collection module may include at least one of a pressure collection terminal, a temperature collection terminal, a liquid level collection terminal, a rotation speed collection terminal, a conductance collection terminal, and a density collection terminal, and each collection terminal forms a network in an ad hoc network manner.
In this embodiment, the front-end wireless data acquisition unit may further include a data standard processing module configured to process and convert the downhole process parameters into standard digital signals.
In this embodiment, the data collection and aggregation unit may further include a central processing unit and a protocol conversion module. The central processing unit is connected with the wireless transceiving module and is configured to analyze and process the data received by the wireless transceiving module to obtain the data conforming to the second network protocol. The protocol conversion module is connected with the central processing unit and is configured to forward data conforming to a second network protocol. For example, the second network protocol may be the general TCP/IP protocol.
In this embodiment, the back-end data processing unit may include a parameter configuration module configured to generate tuning parameters for a specified acquisition terminal. The wireless transceiver module can also be configured to receive the calibration parameters output by the back-end data processing unit and forward the calibration parameters to a designated acquisition terminal.
In this embodiment, the back-end data processing unit may further include a data parsing module and a display module. The data analysis module is configured to analyze the data conforming to the second network protocol into readable direct-measuring parameters, and calculate derived parameters of each acquisition terminal according to the direct-measuring parameters. The display module is configured to display the calculation result of the data analysis module.
In this embodiment, the back-end data processing unit may further include a packet loss determining module and a data anti-loss module. The packet loss judging module is configured with a packet loss judging algorithm and can judge whether the data received by the back-end data processing unit is continuous or not and whether the packet is lost or not according to a preset rule. The data anti-lost packet module is configured with a data complementation anti-lost packet algorithm, and can find out the packet-lost data when the packet judgment module judges that the packet loss of the data is discontinuous.
In this embodiment, the transceiving distance of the data collection and aggregation unit may be not less than 200 m.
In another aspect, the present invention provides a wellsite data collection method suitable for complex environments, which performs wellsite data collection by using the wellsite data collection system as described above, and includes the following steps.
And S1, forming a wellsite Internet of things by using the front-end wireless data acquisition unit, the data acquisition and aggregation unit and the wireless bridge equipment.
And S2, transmitting the collected data to a data collection and aggregation unit, and processing the collected data.
And S3, transmitting the processed collected data to a back-end data processing unit for analysis and calculation to obtain derived parameters.
For a better understanding of the invention, the following further illustrates the invention in connection with the drawings and examples, but the invention is not limited to the following examples.
Example 1
As shown in fig. 1, a well site data acquisition system suitable for complex environments includes a front-end wireless data acquisition unit, a data acquisition aggregation unit, a wireless bridge device, and a back-end data processing unit. The front-end wireless data acquisition unit, the data acquisition aggregation unit and the wireless network bridge equipment establish a special Internet of things, the data acquisition aggregation unit connects received data signals to the rear-end data processing unit through a network cable to display basic data, and the rear-end data processing unit uploads the acquired basic data to the integrated platform for calculation and analysis through an oil intranet link established by an optical fiber broadband or a wireless network.
The wireless acquisition unit at the front end is packaged in an explosion-proof shell and comprises an acquisition module, a data standard processing module, a wireless communication module, a power management module and other modules, when the wireless acquisition unit works, a power supply is provided by an internal battery to form an explosion-proof wireless acquisition module network node, and a network is formed in a self-networking mode. The front-end wireless acquisition unit can acquire digital signals, analog signals and RS485 signals of each acquisition terminal and transmits the digital signals, the analog signals and the RS485 signals to the data acquisition and aggregation unit through a wireless communication module network.
The acquisition module comprises a pressure acquisition terminal, a temperature acquisition terminal, a liquid level acquisition terminal, a rotating speed acquisition terminal, a conductance acquisition terminal, a density acquisition terminal and the like. The acquisition module actively transmits data (the frequency can be set to be 1-5 seconds) including self state, battery power, wireless signal intensity, most important measured process parameters and the like to the data acquisition and aggregation unit. Each acquisition terminal adopts built-in battery power supply, need not external power supply and cabling and built-in battery power supply time and reaches more than half a year, and power management default is low-power consumption mode to it is long when the extension battery is used.
And the data standard processing module processes the parameters to be transmitted and converts the parameters into a standard data form for transmission.
The wireless communication module adopts 915MHz industrial standard wireless protocol, and can meet the wireless communication characteristics of high capacity and low power consumption.
In addition, the acquisition module is further configured to update the module calibration value after receiving the calibration command from the back-end data processing unit forwarded by the data acquisition aggregation unit, and the value acquired and calculated by the acquisition module is recalculated to obtain a new value and acquire data again. The benefit of this processing is a uniform calibration of the sensor data.
The data acquisition and aggregation unit can be a data acquisition aggregator, the data acquisition aggregator is mainly used for establishing a special Internet of things in communication with the acquisition terminals, and data sent out by a plurality of acquisition terminals in a wireless mode on site are aggregated through the network. The data comprises the process parameters obtained by collecting the self state of the terminal, the battery power, the wireless signal strength and the most important measurement, and the data is forwarded to the back-end data processing unit. The technical parameters of the data collection aggregator are shown in table 1.
TABLE 1 technical parameters of data acquisition aggregator
In the scheme, the data acquisition aggregator and the front-end wireless data acquisition unit adopt 915MHz industrial standard wireless protocols to carry out data transmission, the data acquisition aggregator and the rear-end data processing unit are connected by adopting a wired local area network, an RJ45 interface is arranged, and a general TCP/IP protocol is used.
As shown in fig. 2, the data collection aggregator is composed of a networking module, a protocol conversion module, a wireless transceiver module, a central processing unit, and the like. The central processing unit is respectively connected with the networking module, the protocol conversion module and the wireless transceiving module, and is responsible for analyzing and processing the data received by the wireless transceiving module, performing protocol conversion on the processed data, and forwarding the data through the protocol conversion module. The method has the advantages that the modules run independently without mutual influence, and the data processing speed of wireless receiving and sending is high and the efficiency is high due to multi-thread running.
In addition, the data collection aggregator receives tuning parameters from the back-end data processing unit and forwards the tuning parameters to the designated collection terminal. The back end data processing equipment issues a parameter configuration command (namely, an adjustment instruction) to a designated acquisition terminal, firstly, the back end data processing equipment issues the parameter configuration command to a data acquisition aggregator in a RJ45 wired network communication mode, the data acquisition aggregator analyzes the command, judges the acquisition terminal in a front end wireless data unit which needs to be configured, issues the configuration command to the front end wireless data unit in a wireless communication mode, and updates and stores the configuration parameter after the corresponding acquisition terminal receives the command. The benefit of this is the remote flexible configuration of module parameters.
The data acquisition aggregator and the front-end wireless data acquisition unit both adopt a novel networking mode and support concurrent transmission of wireless data. The novel networking mode refers to a wireless star networking method adopted by a wireless networking communication module used by a data acquisition aggregator and a front-end wireless data acquisition unit, and the concurrent transmission of wireless data is realized by adopting a carrier sense multiple access technology (CSMA/CA) for supporting collision avoidance.
The back end data processing equipment is a data acquisition unit, the acquisition unit consists of hardware such as a host, a display, an antenna and the like, data acquisition software and data remote transmission software are integrated on the host to realize the functions of data acquisition, data transmission and the like, the data are transmitted to a base database, and a client calls the data of the base database through a network to be displayed and applied.
The host computer is provided with data acquisition software and a data remote transmission tool to complete data processing, the received data is analyzed and processed through the data acquisition software, derived parameters are obtained through calculation according to direct measurement parameters, and the processed data are transmitted to a base database through a network and the remote transmission tool. The data acquisition software is arranged on the host and used for receiving the data sent by the coordinator, calculating the data according to the pre-configuration and storing the data on the host. The data remote transmission tool is used for sending the data calculated by the data acquisition software to the designated equipment (the equipment can be connected with an oil intranet to transmit the data to a base database) in a UDP or TCP continuous transmission mode. The specific implementation method for analyzing and processing the data and obtaining the derived parameters is as follows: the received number is a hexadecimal character string, and the hexadecimal character string is analyzed into readable data through a preset protocol; and configuring the calculation parameters of each sensor through a configuration interface, and calculating in real time. The purpose of analyzing the data is to obtain the desired value, rather than the original value of the sensor, which has the advantages of forward calculation, reduced server load and easy data observation.
The host is also provided with a packet loss judgment rule algorithm and a data complementation packet loss prevention algorithm, the data acquisition and cache data acquisition according to the label identification is completed through a wireless data module acquisition algorithm in the front-end wireless data acquisition unit, and the host judges whether the data is lost continuously or not according to a set rule after receiving the data. If no packet loss exists continuously, analyzing normally; and if the packet loss is determined to be discontinuous, supplementing the packet-dropping data by using a data supplementing packet-dropping prevention algorithm. For example, the wireless data module caches the last sampled data even several times, the number of the cached data is determined by the data uploading time and the data sampling time of the wireless data module, the data sent to the host by the wireless data module each time is provided with a tag label, when the tag labels received by the host are continuous, the situation that the data packet is not lost is shown, when the tag labels received by the host are not continuous, the host judges the number of the lost data packets needing to be supplemented through the last sampled data cached in the currently received data packet or even several times, and then through the difference value of the tag labels of the data packets, the sampled data corresponding to the tag labels of the lost data packets are extracted from the cache of the currently received data packet, and the lost data packets are supplemented.
The invention provides a new data acquisition system and a scheme, and the scheme has the advantages of convenient deployment and low cost compared with the configuration of a comprehensive logging instrument; according to the scheme, a standard industrial acquisition module is adopted on site to acquire and measure professional data and relevant physical parameters at the front end, a wireless chip is arranged in the acquisition module, the acquired data are converted into standard digital signals, the standard digital signals are transmitted to a collector through a 915MHz industrial standard wireless protocol, the collector is used for connecting the received data signals to the collector through a network cable to display basic data, the collector uploads the acquired basic data to a base through an oil intranet link established by an optical fiber broadband or a wireless network to be calculated and analyzed, data acquisition and application are completed, real-time monitoring of a whole well section is achieved, and the blank of real-time data acquisition and display under the defect of a logging instrument is filled.
Example 2
A well site data acquisition method suitable for complex environments comprises the following steps:
step S1: the well site Internet of things is composed of a front-end wireless data acquisition unit, a data acquisition and aggregation unit and wireless bridge equipment.
Step S2: based on the above step S1, the collected data is transmitted to the data collection unit, and the data is processed by the data collector.
Step S3: and transmitting the processed data back to the base database, and calling the base database data by the client through the network for displaying and applying.
Preferably, in step S1, the front-end wireless data acquisition unit is installed on different devices in the wellsite for data acquisition, the front-end wireless data acquisition unit further integrates an acquisition module, a data processing unit, a communication module and a power management module, and the data acquisition and aggregation unit is composed of a networking module, a protocol conversion module, a wireless transceiver module and a central processing unit. In step S3, the data collector (i.e., the back-end data processing device) is composed of a host, a display, a power line, a network bridge antenna, a keyboard, and a mouse; the processed data is transmitted to the base database through the network and the remote transmission tool.
In summary, the invention has the following beneficial effects:
(1) the data acquisition aggregator used by the invention adopts a novel networking mode to support the concurrent transmission of wireless data; the construction of the data acquisition aggregator network is not limited by any external conditions, and a constructor can quickly construct a data transmission network;
(2) the data acquisition aggregator can conveniently expand the number of acquisition terminals, is convenient to replace, and facilitates the network access of newly added or replaced acquisition terminals;
(3) the invention forms a well site networking mode based on the wireless sensor, can conveniently acquire field real-time data, fills the blank of real-time data acquisition and display under the defect of a logging instrument, and has important significance for meeting the continuously increasing requirements of drilling engineering;
(4) the data receiving and transmitting distance of the data acquisition collector is not less than 200m, and the communication between a front-end wireless acquisition terminal at any position in a well site and the data acquisition collector is met; meanwhile, the invention adopts the frequency band with low utilization rate to carry out two-way communication, thereby avoiding the frequency band interference of general equipment such as site interphones and the like.
Although the present invention has been described above in connection with the exemplary embodiments and the accompanying drawings, it will be apparent to those of ordinary skill in the art that various modifications may be made to the above-described embodiments without departing from the spirit and scope of the claims.
Claims (10)
1. A wellsite data acquisition system suitable for complex environments, the wellsite data acquisition system comprises a front-end wireless data acquisition unit, a data acquisition aggregation unit, a wireless bridge device and a back-end data processing unit, wherein,
the front-end wireless data acquisition unit comprises an acquisition module and a wireless communication module, wherein the acquisition module is configured to acquire underground process parameters, and the wireless communication module is connected with the acquisition module and is configured to transmit data through a first network protocol with specified frequency;
the data acquisition aggregation unit comprises a networking module and a wireless transceiver module, the networking module is configured to be capable of building a wireless local area network with specified frequency so as to collect output data of the front-end wireless data acquisition unit, and the wireless transceiver module is connected with the wireless bridge equipment, is configured to receive the output data and sends the output data to the wireless bridge equipment;
the back-end data processing unit is in wired connection with the wireless network bridge equipment and is configured to analyze and calculate the output data of the front-end wireless data acquisition unit so as to obtain derived parameters.
2. The wellsite data collection system suitable for complex environments as claimed in claim 1, wherein the collection module comprises at least one of a pressure collection terminal, a temperature collection terminal, a liquid level collection terminal, a rotation speed collection terminal, a conductance collection terminal and a density collection terminal, and each collection terminal forms a network in an ad hoc network manner.
3. The wellsite data acquisition system suitable for complex environments as recited in claim 2, wherein the backend data processing unit comprises a parameter configuration module configured to generate the calibration parameters for a designated acquisition terminal, and wherein the transceiver module is further configured to receive the calibration parameters output by the backend data processing unit and forward the calibration parameters to the designated acquisition terminal.
4. The wellsite data collection system adapted for use in a complex environment of claim 1, wherein the front-end wireless data collection unit further comprises a data standard processing module configured to process downhole process parameters into standard digital signals.
5. The wellsite data collection system suitable for complex environments as claimed in claim 3, wherein the data collection and aggregation unit further comprises a central processing unit and a protocol conversion module, the central processing unit is connected with the wireless transceiver module and configured to perform parsing processing on the data received by the wireless transceiver module to obtain data conforming to a second network protocol; the protocol conversion module is connected with the central processing unit and is configured to forward the data conforming to the second network protocol.
6. The wellsite data collection system suitable for use in a complex environment of claim 5, wherein the first network protocol is a 915MHz industry standard wireless protocol and the second network protocol is a common TCP/IP protocol.
7. The wellsite data collection system suitable for use in a complex environment of claim 4, wherein the back-end data processing unit further comprises a data parsing module and a display module, the data parsing module configured to parse data conforming to the second network protocol into readable direct measurement parameters and calculate derived parameters for each collection terminal from the direct measurement parameters; the display module is configured to display the calculation result of the data analysis module.
8. The wellsite data collection system suitable for complex environments as claimed in claim 7, wherein the back-end data processing unit further comprises a packet loss determination module and a data loss prevention module, the packet loss determination module is configured with a packet loss determination algorithm capable of determining whether data received by the back-end data processing unit are continuous and whether packet loss occurs according to a predetermined rule; the data anti-lost packet module is configured with a data complementation anti-lost packet algorithm, and can find out the packet-lost data when the packet judgment module judges that the packet loss of the data is discontinuous.
9. The wellsite data collection system suitable for use in a complex environment of claim 1, wherein the data collection and aggregation unit has a transmit-receive distance of not less than 200 m.
10. A wellsite data collection method suitable for complex environments, characterized in that wellsite data collection is carried out through the wellsite data collection system according to any one of claims 1-9, and the wellsite data collection method comprises the following steps:
s1, forming a well site Internet of things by using a front-end wireless data acquisition unit, a data acquisition and aggregation unit and wireless bridge equipment;
s2, transmitting the collected data to a data collecting and gathering unit, and processing the collected data;
and S3, transmitting the processed collected data to a back-end data processing unit for analysis and calculation to obtain derived parameters.
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