Abstract: In order to realize the single-well automation and intelligent production, an oilfield RTU control system was developed by using the programmable controller system PLC as a core, which has been used commonly at abroad and easy to form field automation control. It is also equipped with input and output modules of high reliability, power acquisition module and GPRS module. Some key technologies such as large capacity storage, low energy consumption, wireless testing, wireless data transmission are applied to the system so that it can adapt to harsh field working conditions. It is stable in performance, safe and reliable, convenient to use and is able to prevent rain, sand and theft. By means of the application of PLC technology in the control system, the walking beam and pumping speed can automatically be adjusted, allowing intelligent production, so that the whole system including the pumping unit, sucker rod, oil-well pump can be coordinated in the best way. This improves the system efficiency, greatly reduces labor intensity and promotes the construction of intelligent oilfield.

摘要： 为实现单井自动化及智能排采, 以目前国际通用、易于构成现场自动化控制的可编程控制器PLC 为核 心, 配备高可靠性的输入输出模块、电量采集模块及GPRS 模块, 研制了油田RTU 控制系统。该系统采用大容量存 储、低能耗、无线测试、数据无线传输等关键技术, 适应野外恶劣的工作环境, 性能稳定、安全可靠、使用方便, 具有防雨、防沙、防盗功能。通过进行PLC 技术在该控制系统的应用研究, 可以自动调整游梁平衡度、冲次, 实现 智能排采, 使抽油机、抽油杆、抽油泵等整个系统达到最佳配合, 提高系统效率, 大幅降低工人劳动强度, 推动智 慧油田建设。

关键词: 智能排采, SCADA 系统, RTU, PLC