Research And Application Of Distributed Control Systems For Oil Field Joint Stations

Oil field multi-purpose station with it's characteristics of many equipments and compiex flow,is the primary unit of oil&gas gathering and transportation system.Into the high water cut oil field development,the existing control system used in conventional or digital PID control scheme is difficult to meet the technical requirements.With the development of science and technology,using advanced sensors and smart transmitter electronics devices can be complex and volatile crude oil production under the conditions to achieve more precise control.Intelligent transmitter control instrumentation to the production site is an inevitable trend,combined with the technological transformation of Union Station at the present stage oil needs,the implementation of the existing data bus network transformation,not only can reduce the time investment,and reform all the more easy to install and more consistent with current actual production.Based on the distributed control system development status and trendsanalysis,combined witn two kinds of homemade DCS SUPCON JX-300X and the Joint Automatic Control HS2000 in the field of practical application,given oil field multi-purpose station Distributed Control System integration new program:ProfiBus-DP field bus will be integrated into a distributed control system, the Joint Station LAN network LCN control layer, the introduction of OPC technology to solve different problems of data transmission protocols.In the paper,and focused on ProfiBus-DP data transfer protocol used,using the occasion to connect intelligent devices with on-site methods.Described in the advanced industrial control technology background OPC technology and its applicationa to expand and,given the OPC technology in the field multi-purpose station DCS specific applications and OPC server development steps.Through the realization of ProfiBus-DP field joint station with distributed control system DCS intergration,to achieve decentralized control,control downward.At the same time,simplify the structure makes the system greatly enhanced the accuracy and reliability,to guarantee the security of oil production,a smooth and efficient conduct.