基于PID控制的深水双管系统运行效果分析

Analysis on operation effect of PID control based on deep water double-pipeline system

在深水多相流双管输送中,水下环境条件复杂、输送产量波动等因素造成管道流动不稳定,出现段塞甚至偏流工况,增大了管道的运行风险,难以保障双管系统的高可靠性。本文以南海流花油田群A油田开发工程项目为目标,通过OLGA 2017.2.0多相流瞬态模拟软件建立了深水双管系统输送模型,对管道实际运行工况进行了数值模拟;针对模拟结果发现的双管运行中出现的段塞和偏流问题,提出了采用PID(比例-积分-微分)阀门控制的方式实现对管道运行压力监控和远程操作控制,并验证了PID对双管系统运行的控制效果。本文研究成果可为深水双管系统段塞及偏流工况的控制提供一定的现场技术指导。

For deep water multiphase flow transportation with double-pipeline system,the complicated submarine environments and fluctuating delivered production result in unstable pipeline flow,slug and even bias flow conditions,increasing the operating risk and making it difficult to guarantee the reliability of double-pipeline system.In this paper,a development project of Liuhua oilfields A in the South China Sea was taken as the research target,and the multiphase flow transient simulation software OLGA 2017.2.0 was applied to establish a transportation model of deep water double-pipeline system,in order to carry out numerical simulation of actual operation scenarios.Aiming at the problems of slug and bias flow in double-pipeline system discovered by simulation,a PID(Proportion-Integral-Derivative)valve control method was proposed to monitor and control the pipeline operating pressure remotely,and the PID control effect on the operation of double-pipeline system was verified.The research results of this paper can provide on-site technical guidance for controlling the slug and bias flow conditions of deep water double-pipeline system.