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In the production process of oil extraction, storage and transportation, especially the dynamic monitoring of the storage and transportation process of refined oil is an important task of production management. It is also an important means to guarantee the normal, safe and economical operation of oil fields. In the Western developed countries, automated data collection SCADA has become a supporting facility for production.
With the improvement of human science and technology, and the use of high-tech technology. Enables real-time dynamic monitoring of oil pipelines. The main contents of dynamic monitoring include pipeline and oil well leakage monitoring, ultra-high pressure protection, abnormal temperature, and excessive water content. The oil field is called a "factory without walls," and oil wells, gathering stations, and coalition stations are scattered and remotely dispersed. The oil's entire production process is connected through pipes and becomes a stress system. It is the leakage of pipelines and oil wells that occurs from time to time, causing huge economic losses and environmental pollution to oilfield units. Therefore, the realization of dynamic monitoring of oilfield production systems is of great significance for the timely detection of leaks and other failures, the optimization of production operating parameters, the reduction of the occurrence of oil theft cases, and the improvement of the modern management level of oil fields.
GPRS network introduction
GPRS is the abbreviation of General Packet Radio Service (General Packet Radio Service), and it is a new bearer service developed on the existing GSM system. The purpose is to provide GSM users with packet data services. GPRS uses the same wireless modulation standard as GSM, the same frequency band, the same burst structure, the same frequency hopping rules, and the same TDMA frame structure. This new packet data channel is very similar to the current circuit-switched voice traffic channel, so the existing base station subsystem (BSS) can provide full GPRS coverage from the very beginning. GPRS allows users to send and receive data in the end-to-end packet transfer mode without the need to utilize circuit switched mode network resources. As a result, an efficient and low-cost wireless packet data service is provided. Especially suitable for intermittent, sudden and frequent, small amounts of data transmission, but also for occasional large data transmission. GPRS is a packet switching technology compared to the original GSM dial-up circuit-switched data transmission method. It has "system real-time online," "per-flow metering," "convenient and quick login," "high-speed data transmission," and "free switching." advantage.
System composition
The GPRS wireless network oil field pipeline monitoring system is a domestic advanced remote monitoring technology. It uses computer technology, mobile communication technology, network communication technology, database technology and testing technology to establish a combination of software and hardware platforms. The system uses digital mobile communication technology, changes the analog signal transmission structure under the original traditional structure and introduces mobile communication technology to achieve wireless communication between the host and the extension. It has the functions of dynamic detection of oilfield pipeline data, leakage monitoring, ultra-high pressure protection, temperature anomaly, over-hydraulic alarm, and long-distance information transmission. At the same time, it also carries out the development and research of extended functions such as comprehensive analysis of collected data. It provides a basis for scientific management facilities, improves the scientific utilization of the equipment, and achieves energy saving and consumption reduction targets.
For pipeline and oil wells, such as leakage monitoring, pressure surge protection, abnormal temperature, and excessive water content monitoring, etc. And oil wells, gathering stations, and coalition stations are dotted, and the oil's entire production process is connected through pipelines. It becomes a stress system, and it can be said that the system is characterized by traction. We have designed a way to use GPRS wireless networks. Realize the data collection and remote transmission scheme of field parameters of oil field pipelines, truly realize multi-point, remote, real-time and synchronous field data transmission of oilfield data, convenient, fast, economical, reliable, and safe to carry out distributed concentration of oil field pipelines. Measurement and control.
(I) System Block Diagram
(II) System description The entire remote monitoring system is composed of three parts as shown in the above figure: on-site acquisition control part, GPRS data transmission part, and monitoring room data center. Through the control module to complete the data exchange with GPRS DTU. PLC (acquisition equipment) sends data to GPRS DTU at regular time, at the same time PLC receives the data sent by GPRS DTU in real time to complete the corresponding control function. GPRS DTU will forward the data sent from the PLC to the data center immediately.
(1) In each station, the PLC collects the information parameters in real time and sends the data to the GPRS DTU communication module through the RS-485 serial communication module. At the same time, the communication center can also receive instructions from the monitoring center.
(2) The GPRS data transmission part enters the fixed IP address of the data center in advance when configuring the GPRS DTU communication module. After the GPRS DTU communication module receives the data sent by the PLC, it sends these data to the previously set IP address network server. , forwarded to the data center server through port mapping. The process of sending data by the GPRS DTU is: Data is sent to the China Mobile GPRS network, then through the Internet, and finally received in the data center through ADSL.
(3) The data center of the surveillance room consists of ADSL MODEM, network servers, firewalls, data center servers, and workstations. The data center server receives data from each site through the ADSL Modem and stores the data, historical trend analysis, and report printing.
(III) Main functions of the system • Remote automatic monitoring function: According to the user's requirements, the field data of the oil field site can be collected, statistically analyzed, and various reports and charts can be automatically generated. The historical files of each oil field site can be established and stored. ;
• Fault alarm and prompt function: It can monitor the situation on the site and report it to the management center to notify the management personnel to handle it.
• Telemetry function: The data management center can measure the leakage of the oil field stations within the jurisdiction, the pressure super-high protection, the temperature anomaly, the water content exceeding the standard, theft prevention, etc.;
• Remote control function: Through I/O control, it can operate and control the field equipment, such as starter pump, pressure relief processing and safety protection device, alarm, cut off power supply, etc.;
KB3000 type RS485/422 to GPRS wireless data transmission DTU Features KB3000 type RS485 to GPRS converter, wireless data transmission terminal GPRS DTU is a variety of sensors, smart devices and industrial control with RS-232, RS-485 standard communication interface The device provides transparent data transmission channels. Users do not need to know the complicated GPRS communication principle and TCP/IP protocol, and can change the serial communication of industrial RS232/485 serial devices to GSM/GPRS wireless network communication without changing the original program. Change the traditional serial communication to GPRS wireless network communication. KB3000 built-in TCP/IP protocol stack transparently transmits data. It does not interpret and process the data packets uploaded and delivered by the device. It only implements TCP/UDP data packet encapsulation and unpacking processing on user data packets, thereby realizing transparent transmission of data. Widely used for long-distance wireless communications or remote control.
With the improvement of human science and technology, and the use of high-tech technology. Enables real-time dynamic monitoring of oil pipelines. The main contents of dynamic monitoring include pipeline and oil well leakage monitoring, ultra-high pressure protection, abnormal temperature, and excessive water content. The oil field is called a "factory without walls," and oil wells, gathering stations, and coalition stations are scattered and remotely dispersed. The oil's entire production process is connected through pipes and becomes a stress system. It is the leakage of pipelines and oil wells that occurs from time to time, causing huge economic losses and environmental pollution to oilfield units. Therefore, the realization of dynamic monitoring of oilfield production systems is of great significance for the timely detection of leaks and other failures, the optimization of production operating parameters, the reduction of the occurrence of oil theft cases, and the improvement of the modern management level of oil fields.
GPRS network introduction
GPRS is the abbreviation of General Packet Radio Service (General Packet Radio Service), and it is a new bearer service developed on the existing GSM system. The purpose is to provide GSM users with packet data services. GPRS uses the same wireless modulation standard as GSM, the same frequency band, the same burst structure, the same frequency hopping rules, and the same TDMA frame structure. This new packet data channel is very similar to the current circuit-switched voice traffic channel, so the existing base station subsystem (BSS) can provide full GPRS coverage from the very beginning. GPRS allows users to send and receive data in the end-to-end packet transfer mode without the need to utilize circuit switched mode network resources. As a result, an efficient and low-cost wireless packet data service is provided. Especially suitable for intermittent, sudden and frequent, small amounts of data transmission, but also for occasional large data transmission. GPRS is a packet switching technology compared to the original GSM dial-up circuit-switched data transmission method. It has "system real-time online," "per-flow metering," "convenient and quick login," "high-speed data transmission," and "free switching." advantage.
System composition
The GPRS wireless network oil field pipeline monitoring system is a domestic advanced remote monitoring technology. It uses computer technology, mobile communication technology, network communication technology, database technology and testing technology to establish a combination of software and hardware platforms. The system uses digital mobile communication technology, changes the analog signal transmission structure under the original traditional structure and introduces mobile communication technology to achieve wireless communication between the host and the extension. It has the functions of dynamic detection of oilfield pipeline data, leakage monitoring, ultra-high pressure protection, temperature anomaly, over-hydraulic alarm, and long-distance information transmission. At the same time, it also carries out the development and research of extended functions such as comprehensive analysis of collected data. It provides a basis for scientific management facilities, improves the scientific utilization of the equipment, and achieves energy saving and consumption reduction targets.
For pipeline and oil wells, such as leakage monitoring, pressure surge protection, abnormal temperature, and excessive water content monitoring, etc. And oil wells, gathering stations, and coalition stations are dotted, and the oil's entire production process is connected through pipelines. It becomes a stress system, and it can be said that the system is characterized by traction. We have designed a way to use GPRS wireless networks. Realize the data collection and remote transmission scheme of field parameters of oil field pipelines, truly realize multi-point, remote, real-time and synchronous field data transmission of oilfield data, convenient, fast, economical, reliable, and safe to carry out distributed concentration of oil field pipelines. Measurement and control.
(I) System Block Diagram
(II) System description The entire remote monitoring system is composed of three parts as shown in the above figure: on-site acquisition control part, GPRS data transmission part, and monitoring room data center. Through the control module to complete the data exchange with GPRS DTU. PLC (acquisition equipment) sends data to GPRS DTU at regular time, at the same time PLC receives the data sent by GPRS DTU in real time to complete the corresponding control function. GPRS DTU will forward the data sent from the PLC to the data center immediately.
(1) In each station, the PLC collects the information parameters in real time and sends the data to the GPRS DTU communication module through the RS-485 serial communication module. At the same time, the communication center can also receive instructions from the monitoring center.
(2) The GPRS data transmission part enters the fixed IP address of the data center in advance when configuring the GPRS DTU communication module. After the GPRS DTU communication module receives the data sent by the PLC, it sends these data to the previously set IP address network server. , forwarded to the data center server through port mapping. The process of sending data by the GPRS DTU is: Data is sent to the China Mobile GPRS network, then through the Internet, and finally received in the data center through ADSL.
(3) The data center of the surveillance room consists of ADSL MODEM, network servers, firewalls, data center servers, and workstations. The data center server receives data from each site through the ADSL Modem and stores the data, historical trend analysis, and report printing.
(III) Main functions of the system • Remote automatic monitoring function: According to the user's requirements, the field data of the oil field site can be collected, statistically analyzed, and various reports and charts can be automatically generated. The historical files of each oil field site can be established and stored. ;
• Fault alarm and prompt function: It can monitor the situation on the site and report it to the management center to notify the management personnel to handle it.
• Telemetry function: The data management center can measure the leakage of the oil field stations within the jurisdiction, the pressure super-high protection, the temperature anomaly, the water content exceeding the standard, theft prevention, etc.;
• Remote control function: Through I/O control, it can operate and control the field equipment, such as starter pump, pressure relief processing and safety protection device, alarm, cut off power supply, etc.;
KB3000 type RS485/422 to GPRS wireless data transmission DTU Features KB3000 type RS485 to GPRS converter, wireless data transmission terminal GPRS DTU is a variety of sensors, smart devices and industrial control with RS-232, RS-485 standard communication interface The device provides transparent data transmission channels. Users do not need to know the complicated GPRS communication principle and TCP/IP protocol, and can change the serial communication of industrial RS232/485 serial devices to GSM/GPRS wireless network communication without changing the original program. Change the traditional serial communication to GPRS wireless network communication. KB3000 built-in TCP/IP protocol stack transparently transmits data. It does not interpret and process the data packets uploaded and delivered by the device. It only implements TCP/UDP data packet encapsulation and unpacking processing on user data packets, thereby realizing transparent transmission of data. Widely used for long-distance wireless communications or remote control.
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