基于PIPEPHASE的苏南采出水外输系统模拟研究

PIPEPHASE-based Simulation Study on the Export System of Extracted Water from Sunan

采出水外输是各大气田生产过程中保证气田产量和完善气田开发效果的重要途径。苏南气田采出水外输系统是一个复杂的流体网络系统,系统需要在不同状态下对外输方式进行调整。基于集气站、输水阀室、输水管线、处理厂的空间分布和拓扑结构关系,利用PIPEPHASE稳态多相流模拟计算软件,建立包含管网设施和参数的气田采出水外输系统模型;通过黏密度检测分析、阴阳离子色谱实验等明确了外输系统中的介质组分,进而开展仿真模拟;通过误差修正后的模型开展模拟计算,得出不同状态下各节点单元的压力和流量。结果表明:外部气温变化造成的介质温度改变会对外输系统产生小幅影响,通过对比不同分配分输方式的模拟计算结果与现场生产数据,验证了模型的合理性。研究结果可以为苏南气田现场生产提供参考。

Extractive water export is an important way to ensure the gas field production and improve the development effect of the gas field in the production process of each gas field.Extracted water export system of Sunan gas field is a complex fluid network system,and the system needs to be adjusted to the external transmission mode in different states.Based on the spatial distribution and topological structure of gas gathering station,water transmission valve room,water transmission pipeline,and treatment plant,a model of extracted water export system of the gas field is established which contains the pipeline network facilities and parameters by utilizing the PIPEPHASE steady-state multiphase flow simulation and calculation software and clarifies the medium components in the export system through viscous density detection analysis and anion and cation chromatography experiments,and then the simulations are carried out;the simulation calculations are carried out through the error-corrected model to derive the pressures and flow rates of each node unit under different states.The results show that the change of medium temperature caused by the change of external air temperature will have a small influence on the external transmission system,and the simulation results of different distribution and distribution methods are compared with the field production data,which verifies the reasonableness of the model and provides a reference basis for the field production of Sunan gas field.