东河塘油田自控系统

东河塘油田自控系统主要是由工艺自控子系统、变配电自控子系统与消防自控子系统所组成。其中工艺自控子系统为自控主系统，采用了集散型计算机控制系统，具有流量、温度、界面、压力等的测量和调节，顺序逻辑控制，电机启停控制功能。

Automatic Control System of Donghetang Oilfield

This system is mainly made up of process AC sub system, power transforming-distributing AC sub system and fire fighting AC sub system etc. It applies colletive and distributive type computer control system (DCS). The system has metering and adjusting for flow, temperature, interfaces and pressure etc, sequence logic control and motor start-stop control functions. DCS system has two sets field devices control Units. One sets on the motor control room, the other sets on the center control room. Safety alarm and emergency stoppage apply the independent, programmable logic controller control (PLC ). Oil wells and watcr souce wells all have remote control termi nals (RTU ). The main monitoring routes are: wellheads (oil, water, waterflood wells ), automatic wellselecting and wellhead oil-gas-water metering, crude outer transportation metering, gas extracting on storage tank, quality control for crude dehydration,sand lashing and safety protection etc.