In order to ensure stable exploitation of oil, combined with CaiNan Oilfield ac-tual production, taking into account the external environment of the scene, we designed two level distributed automation systems. The system controller uses the well 16 monolithic INTEL 80C196 microcontroller circuit as the core monitoring and control, access to the wellhead temperature and pressure data acquisition via standard signal transmitter. Based on the principle of circuit design and control software design method,developed primarily mod-ular applications. By applying concluded: power factor follower method can achieve signifi-cant energy- saving effect,the modular controller program easy to modify and transplant,to achieve a cost-effective extraction of automated control systems.%为了确保油田稳定开采，结合彩南油田的实际生产情况，考虑外界现场环境，设计了两级分布式采油自动化系统。该系统中油井控制器采用Intel十六位单片机80C196作为测控核心，通过采集变送器标准信号获得井口温度及压力等数据。基于电路设计原理及控制软件设计方法，开发了主要的模块化应用程序。通过应用得出结论：采用功率因数随动技术节电效果显著，模块化控制器程序易于修改和移植，实现了采油自动化控制系统的低成本高效率。
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